Wednesday, December 29, 2010

Polystyrene Heat Resistance Glass Fiber 20~30%

Molding Properties

          ·     Drying temperature                                           : —
          ·     Drying time                                                       : —
          ·     Injection forming cylinder temperature               : 170~280°C
          ·     Injection molding tool temperature                     : 20~80°C
          ·     Injection molding pressure                                 : 1050~2810kgf/cm­­2
          ·     Compression molding temperature                     : —
          ·     Compression molding pressure                          : —
          ·     Molding shrinkage rate                                      : 0.1~0.3%
          ·     Specific gravity                                                 : 1.20~1.33density
            JIS            : K6911,K7122
            A.S.T.M   : D792

Mechanical Characteristics

          ·      Tensile strength                                               : 633~1050kgf/cm2
            JIS            : K6911,K7113
            A.S.T.M   : D638
          ·      Tensile elongation                                           : 2~60%
          ·      Compressive strength                                     : 949~1270kgf/cm2
           JIS            : K7208
          ·      Flexure strength                                               : 738~1410kgf/cm2
           JIS            : K7203
          ·       Izot impact strength                                        : 1.4~2.2kgf/cm2
           JIS            : K7110,K7111
          ·       Rockwell hardness                                           : M70~95
           JIS            : K7202
           A.S.T.M   : D785

Thermal Characteristic

          ·       Heat resistance temperature (continuous)                : 82~93°C
          ·       Deflection temperature under load
                   a)                  Bending stress18.6kgf/cm2               : 90~104°C
                   b)                  Bending stress 4.6kgf/cm2                : 97~110°C
            JIS            : K7206,K7207
            A.S.T.M   : D648
 
RYD6JE6QZ8H8

Polystyrene Heat Resistance

Molding Properties

         ·     Drying temperature                                           : —
         ·     Drying time                                                       : —
         ·     Injection forming cylinder temperature               :190~280°C
         ·     Injection molding tool temperature                    : 20~80°C
         ·     Injection molding pressure                                : 703~2110kgf/cm­­2
         ·     Compression molding temperature                    : 129~204°C
         ·     Compression molding pressure                         : 70.3~703kgf/cm2
         ·     Molding shrinkage rate                                     : 0.2~0.6%
         ·     Specific gravity                                                : 1.03~1.09density
          JIS            : K6911,K7122
          A.S.T.M   : D792

Mechanical Characteristics

         ·       Tensile strength                                               : 350~530kgf/cm2
           JIS            : K6911,K7113
           A.S.T.M   : D638
         ·        Tensile elongation                                           : 2~60%
         ·         Compressive strength                                    : —
           JIS            : K7208
         ·         Flexure strength                                             : —
           JIS            : K7203
         ·         Izot impact strength                                       : 2.2~19kgf/cm2
           JIS            : K7110,K7111
         ·         Rockwell hardness                                        : M70
           JIS            : K7202
           A.S.T.M   : D785

Thermal Characteristic

         ·         Heat resistance temperature (continuous)                : —
         ·         Deflection temperature under load
                    a)                  Bending stress18.6kgf/cm2               : 90°C
                    b)                  Bending stress 4.6kgf/cm2                : —
            JIS            : K7206,K7207
            A.S.T.M   : D648
 
 



RYD6JE6QZ8H8

Polystyrene High Impact Proof

Molding Properties

         ·        Drying temperature                                     : —
         ·        Drying time                                                 : —
         ·        Injection forming cylinder temperature         : 190~280°C
         ·        Injection molding tool temperature               : 10~80°C
         ·        Injection molding pressure                           : 703~2110kgf/cm­­2
         ·        Compression molding temperature               : 121~204°C
         ·        Compression molding pressure                    : 70.3~703kgf/cm2
         ·        Molding shrinkage rate                                : 0.4~0.7%
         ·        Specific gravity                                           : 1.03~1.06density
            JIS            : K6911,K7122
            A.S.T.M   : D792

Mechanical Characteristics

         ·         Tensile strength                                             : 200~350kgf/cm2
             JIS            : K6911,K7113
             A.S.T.M   : D638
         ·         Tensile elongation                                          : 13~50%
         ·         Compressive strength                                    : 281~633kgf/cm2
             JIS            : K7208
         ·         Flexure strength                                             : 211~844kgf/cm2
             JIS            : K7203
         ·         Izot impact strength                                       : 3.3~20kgf/cm2
             JIS            : K7110,K7111
         ·         Rockwell hardness                                        :  M10~80
             JIS            : K7202
             A.S.T.M   : D785

Thermal Characteristic

          ·         Heat resistance temperature (continuous)               : 59.8~79.2°C
          ·          Deflection temperature under load
                    a)                  Bending stress18.6kgf/cm2               : 90°C
                    b)                  Bending stress 4.6kgf/cm2                : 82~104°C
              JIS            : K7206,K7207
              A.S.T.M   : D648

Polystyrene

           Often referred to as styrene resin, it is used for molding, in lacquers, and for coatings, formed by the polymerization of monomeric styrene, which is a colorless liquid of the composition C6H5CH:CH2, specific gravity 0,906, and boiling point 145°C. it is made from ethylene, and is ethylene with one of the hydrogen atoms replaced by a phenyl group. It is also called phenyl ethylene and vinyl benzene. As it can be made by heating cinnamic acid, C6H5CH:CHCO2H, an acid found in natural balsams and resins, it is also called cinnamene. In the form of vinyl toluene which consists of mixed isomers of methyl styrene, the material is reacted with drying oils to form alkyd resins for paints and coatings.

The polymerized resin is a transparent solid very light in weight with a specific gravity of 1.054 to 1.070. The tensile strength is 4,000 to 10,000 lb/in2 (27 to 68MPa), compressive strength 12,000 to 17,000 lb/in2 (82 to 117MPa), and dielectric strength 450 to 600 volts per mil (18 to 24 X 106 volts per meter). Polystyrene is notable for water resistance and high dimensional stability. It is also tougher and stronger at low temperatures than most other plastics. It is valued as an electrical insulating material, and the film are used for cable wrapping.

When produced from methyl styrene, parts have a hardness to Rockwell M83, with tensile strengths to 8,900 lb/in2 (61MPa), and have a stiffness that makes them suitable for such products as cabinets and housings. Dielectric strength is also high, above 800 volts per mil (32 X 106 volts per meter), and the resin is thus used for electronic parts. The heat distortion temperature is 215°F (101°C).

Styrenes are subject to creep. Therefore the long-term bearing strength (over 2 weeks) is only about one-third the short-time tensile strength. Since their maximum useful service temperature is about 160°F (71°C), their use is restricted chiefly to room-temperature application. Because of their low cost and ease of processing, polystyrene are widely used for consumer products. The impact grades and glass-filled types are used quite widely for engineering parts and semistructural application. Also, polystyrene foams are highest in volume use of all the foam plastics. Because of good processing characteristic, polystyrenes are produced in a wide range of forms. They can be extruded, injection-, compression-, and blow molded, and thermoformed. They are also available as film sheet and foam.

Polystyrenes can be divided into the following major types: general-purpose grades, the lowest in cost, are characterized by clarity, colorability and rigidity. They are applicable where appearance and rigidity, but not toughness, are required. Common uses are wall tiles, compact cases, knobs, brush backs, and container lids. Impacts grades of polystyrene are produced by physically blending styrene and rubber. Grades are generally specified as medium, high, and extra-high. As impact strength increases, rigidity decreases. Medium-impact grades are used where a combination of moderate toughness and translucency is desired, for example, in such products as containers, closures, and small radio cabinets. High-impact polystyrenes have improved heat resistance and surface gloss. They are used for refrigerator door liners and crispers trays, containers, toys, and heater ducts in automobiles. The extra-high-impact grades are quite low in stiffness, and their use is limited to parts subject to high-speed loading.

Styrene can be polymerized with butadiene, acrylonitrile, and other resins. In terpolymer, acrylonitrile-butadiene-styrene (abbreviated ABS), is one of the common combinations. Styrene-acrylonitrile (SAN) has excellent resistance to acids, bases, salts, and some solvents. It also is among the stiffest of the thermoplastics, with a tensile modulus of 400,000 to 550,000 lb/in2 (2,757 to 3,791MPa). Styrene resins for molding are now marketed under a wide variety of trade names, with or without fillers and reinforcing agents. Many of these are copolymer resins, or are modified with plasticizer or cross-linking agents. Victron, of the U.S. Rubber Co., is a clear transparent polystyrene. Lustron, of Monsanto, is polystyrene in various grades, and Stymer is a polystyrene resin for sizing textiles. Piccotex, of the Pennysylvania Industrial Chemical Corp., is styrene copolymer in solid form soluble in mineral spirits for use in paints, coatings, and adhesives. Styron and Styraloy, of the Dow Chemical Co., are polystyrene molding resins, and Tyril, of this company, originally called Styrex, is a styrene-acrylonitrile copolymer.

Loalin, of the Catalin Corp., is a polystyrene with a specific gravity 1.05 to 1.07. it is crystal clear, and will take light pastel colors. In the clear form in transmits 90% light. It is water-resistant and has a dielectric strength of 500 to 700 volts per mil ( 1,970 to 2,758 volts per meter). It is not affected by alcohol, acids, or alkalies, but is soluble in aromatic hydrocarbons. It is preferably injection-molded. Exon 860, of the Firestone Plastic Co., is a soft grade of polystyrene that molds easily into products of high flexibility. The molded material has a tensile strength of 6,000 lb/in2 (41MPa) with elongation of 50%, Rockwell hardness of R100, and the dielectric strength of 510 volts  per mil (20 X 106 volts per meter). Fibertuff, of the Koppers Co., marketed in pellets for injection molding, is 60% polystyrene and 40% glass fiber. Molded parts have a specific gravity of 1.33, a tensile strength of 11,000 lb/ in2 (75MPa), heat distortion point of 220°F (104°C), and high impact resistance.

Styrene-butylene resins are copolymers that mold easily and produce thermoplastic products of low water absorption and good electrical properties. They have strength equal to the vinyls with grater elongation. Foamed polystyrene is available in blocks and heavy sheets for thermal insulation. It weighs about 1 lb/ft3 (16 kg/m3) and is rigid. Flexible styrene foam is also made into very thin sheets for wrapping frozen foods. It is grease-resistant and a good insulator, and is low in cost. Styrene is know best known for its use in synthetic rubbers, but the difference between resins and rubbers is chiefly in flexibility.

Applications:

·       Refrigerators (internal box)
·       Electric fans (blade)
·       Measuring instrument cases
·       Circuit component frames
·       Plastic models

 Polystyrene General

Molding Properties

         ·            Drying temperature                                            : —
         ·            Drying time                                                        : —
         ·            Injection forming cylinder temperature                : 170~280°C
         ·            Injection molding tool temperature                      : 20~60°C
         ·            Injection molding pressure                                  : 703~2110kgf/cm­­2
         ·            Compression molding temperature                      : 129~204°C
         ·            Compression molding pressure                           : 70.3~703kgf/cm2
         ·            Molding shrinkage rate                                       : 0.4~0.7%
         ·            Specific gravity                                                   : 1.03~1.05density
               JIS            : K6911,K7122
               A.S.T.M   : D792

Mechanical Characteristics


         ·           Tensile strength                                               : 350~840kgf/cm2
               JIS            : K6911,K7113
               A.S.T.M   : D638
         ·           Tensile elongation                                           : 3~4%
         ·           Compressive strength                                     : 809~1120kgf/cm2
               JIS            : K7208
         ·            Flexure strength                                             : 562~984kgf/cm2
               JIS            : K7203
         ·             Izot impact strength                                       : 1.4~2.2kgf/cm2
               JIS            : K7110,K7111
         ·            Rockwell hardness                                         : M60~75
               JIS            : K7202
               A.S.T.M   : D785

Thermal Characteristic

         ·                     Heat resistance temperature (continuous)          : 65.3~76.5°C
         ·                     Deflection temperature under load
                          a)                  Bending stress18.6kgf/cm2               : 104°C
                          b)                  Bending stress 4.6kgf/cm2                : 82~110°C
                JIS            : K7206,K7207
                A.S.T.M   : D648








Tuesday, December 28, 2010

Polypropylene Glass Fiber 40%

Molding Properties

        ·              Drying temperature                                            : —
        ·              Drying time                                                        : —
        ·              Injection forming cylinder temperature                : 200~300°C
        ·              Injection molding tool temperature                      : 20~90°C
        ·              Injection molding pressure                                  : 703~1410kgf/cm­­2
        ·              Compression molding temperature                      : 171~288°C
        ·              Compression molding pressure                           : 0.35~0.70kgf/cm2
        ·              Molding shrinkage rate                                       : 0.2~0.8%
        ·              Specific gravity                                                   : 1.22~1.23density
              JIS            : K6911,K7122
              A.S.T.M   : D792

Mechanical Characteristics

       ·               Tensile strength                                               : 560~1000kgf/cm2
              JIS            : K6911,K7113
              A.S.T.M   : D638
       ·               Tensile elongation                                           : 2~4%
       ·               Compressive strength                                     : 387~492kgf/cm2
              JIS            : K7208
       ·               Flexure strength                                              : 492~773kgf/cm2
              JIS            : K7203
       ·               Izot impact strength                                        : 7.6~11kgf/cm2
              JIS            : K7110,K7111
       ·              Rockwell hardness                                          : R102~111
              JIS            : K7202
              A.S.T.M   : D785

Thermal Characteristic

       ·        Heat resistance temperature (continous)                       : 121~138°C
       ·         Deflection temperature under load
                   a)                  Bending stress18.6kgf/cm2                  : 59.8~93°C
                   b)                  Bending stress 4.6kgf/cm2                   : 117~161°C
           JIS            : K7206,K7207
           A.S.T.M   : D648

Polypropylene Plastics

  An important group of synthetic plastics employed for molding resins, film, and texture fibers. Developed in 1957 in Italy and Germany, they are produced as polypropylene by catalytic polymerization of propylene, or may be copolymers with ethylene or other material. Propylene is a methyl ethylene, CH3CH:CH2, produced in the cracking of petroleum, and also used for making isopropyl alcohol and other chemicals. The boiling point is —48.2°C. It belongs to the class of unsaturated hydrocarbons known as olefins, which are designated by the word ending –ene. Thus propylene is known as propene as distinct from propane, the corresponding saturated compound of the group of alkanes from petroleum and natural gas. These unsaturated hydrocarbons tend to polymerize and form gums, and are thus not used in fuels although they have antiknock properties.

In polypropylene plastics the carbon atoms linked in the molecular chain between the CH2 units have each a CH3 and the H attached as side links, with the bulky side groups spiraled regularly around the closely packed chain. The resulting plastic has a crystalline structure with increased hardness and toughness and a higher melting point. This type of stereo symmetric plastic has been called isotactic plastic. It can also be produced with butylene or styrene, and the general term of the plastics is polyolefins. Copolymers or propylene are termed polyallomers.

Polypropylene is low in weight. The molded plastic has a density of 0.910, a tensile strength of 5,000lb/in2 (34MPa), with elongation of 150% and hardness of Rockwell R95. The dielectric strength is 1,500 volts per mil (59 X 106­ volts per meter), dielectric constant 2.3, and softening point 150°C. Blown bottles of polypropylene have good clarity and are nontoxic. The melt flow is superior to that of ethylene. A unique property is their ability in thin sections to withstand prolonged flexing. This characteristic has made polypropylene popular for “living hinge” applications. In test, they have been flexed over 70 million times without failure.

The many different grades of polypropylenes fall into three basic groups: homopolymers, copolymers, and reinforced and polymer blends. Properties of the homopolymers vary with molecular-weight distribution and the degree of crystallinity. Commonly, copolymers are produced by adding other types of olefin monomers to the propylene monomers to improve properties such as low-temperature toughness. Copolymers are also made by radiation grafting. Polypropylenes are frequently reinforced with glass or asbestos fibers to improve mechanical properties and increase resistance to deformation at elevated temperatures.

Tenite polypropylene, of Eastman Chemical Products, Inc., is used for molded parts, film, fibers, pipe, and wire covering. The polypropylene film of the Avisun Corp., called Olefane, used for packaging, has a specific gravity of 0.89. It is resistant to moisture, oils, and solvents, is crystals clear and is flexible. It withstands temperature to 250°F (121°C). The 0.001-in (0.003-cm) film has 31,000 ft/lb (20,830 m/kg). Dynafilm 200, of U.S. Industrial Chemical Co., is polypropylene laminated with polyethylene to give easy heat sealing for packaging. The 0.001-in (0.003-cm) film has a strength 3,000 lb/in2 (20MPa) and 400% elongation. Dynafilm 300 has the appearance, feel, and machine-handling properties of a Cellophane film. It consists of oriented polypropylene coated on both sides with vinyl acetate. The film comes in thickness from 0.0008 to 0.0012 in (0.0020 to 0.0030 cm) and heat-seals at 100°F (38°C)

Polypropylene fiber was originally produced in Italy under the name of Merkalon. Unless modified, it is more brittle at low temperatures and has less light stability than polyethylene, but it has about twice the strength of high-density linear polyethylene. Monofilament fibers are used for filter fabrics, and have high abrasion resistance and a melting point at 310°F (154°C). Multifilament yarns are used for textiles and rope. Polypropylene rope is used for marine hawsers, will float on water, and does not absorb water like Manila rope. It has a permanent elongation, or set, of 20%, compared with 19% for nylon 11% for manila rope, but the working elasticity is 16%, compared with 25% for nylon and 8% for Manila. The tensile strength of the rope is 59,000 lb/in2 (406MPa). Fine-denier multifilament polypropylene yarn for weaving and knitting dyes easily and comes in many colors. Chlorinated polypropylene is used in coatings, paper sizing, and adhesives. It has good heat and light stability, high abrasion resistance, and high chemical resistance.

Application:

        ·         Washing machines (Rotors washing tub)
        ·         Battery cases
        ·         TV set and tape recorder housings
        ·         Terminal bed
        ·         Wiring accessories

Polypropylene General

Molding Properties

       ·                 Drying temperature                                        : —
       ·                 Drying time                                                    : —
       ·                 Injection forming cylinder temperature            : 200~300°C
       ·                 Injection molding tool temperature                  : 20~90°C
       ·                 Injection molding pressure                              : 703~1410kgf/cm­­2
       ·                 Compression molding temperature                  : 171~288°C
       ·                 Compression molding pressure                       : 0.35~0.70kgf/cm2
       ·                 Molding shrinkage rate                                   : 1.0~2.5%
       ·                 Specific gravity                                               : 0.90~0.91density
                JIS  : K6911,K7122
                A.S.T.M   : D792

Mechanical Characteristics

       ·               Tensile strength                                               : 210~400kgf/cm2
                JIS            : K6911,K7113
                A.S.T.M   : D638
       ·              Tensile elongation                                             : 100~800%
       ·              Compressive strength                                       : 260~562kgf/cm2
                JIS            : K7208
       ·              Flexure strength                                                : 352~492kgf/cm2
                JIS            : K7203
       ·             Izot impact strength                                            : 2.2~110kgf/cm2
                JIS            : K7110,K7111
       ·            Rockwell hardness                                              : R50~110
                JIS            : K7202
                A.S.T.M   : D785

Thermal Characteristic


       ·         Heat resistance temperature (continous)                     : 88~115°C
       ·         Deflection temperature under load
                 a)                  Bending stress18.6kgf/cm2                   : 45.9~59.8°C
                 b)                  Bending stress 4.6kgf/cm2                    : 103~130°C
            JIS            : K7206,K7207
            A.S.T.M   : D648


Sunday, December 26, 2010

ABS Glass Fibre 20-30%

Molding Properties

       ·           Drying temperature                                        : 70~80°C
       ·           Drying time                                                    : 2hr
       ·           Injection forming cylinder temperature            : 200~260°C
       ·           Injection molding tool temperature                  : 50~80°C
       ·           Injection molding pressure                              : 1050~2810kgf/cm­­2
       ·           Compression molding temperature                  : —
       ·           Compression molding pressure                       : —
       ·           Molding shrinkage rate                                   : 0.1~0.2%
       ·           Specific gravity                                               : 1.22~1.36density
        JIS            : K6911,K7122
        A.S.T.M   : D792

Mechanical Characteristics

       ·        Tensile strength                                               : 570~740kgf/cm2
         JIS            : K6911,K7113
         A.S.T.M   : D638
       ·        Tensile elongation                                           : 2.5~3.0%
       ·        Compressive strength                                     : 844~1550kgf/cm2
         JIS            : K7208
       ·         Flexure strength                                             : 1120~1900kgf/cm2
         JIS            : K7203
       ·         Izot impact strength                                        : 5.4~13.1kgf/cm2
         JIS            : K7110,K7111
       ·        Rockwell hardness                                          : M65~100
         JIS            : K7202
         A.S.T.M   : D785

Thermal Characteristic

       ·                     Heat resistance temperature (continuous)   : 93~100°C
       ·                     Deflection temperature under load
                 a)                  Bending stress18.6kgf/cm2               : 85~107°C
                 b)                  Bending stress 4.6kgf/cm2                : 93~118°C
        JIS            : K7206,K7207
        A.S.T.M   : D648




ABS High Rigidity
ABS Heat Resistance