Monday, January 3, 2011

Nylon 6 - PA6 Glass Fiber 30%


Molding Properties
  ·   Drying temperature                                 : 80°C
  ·   Drying time                                             : 8~15hr
  ·   Injection forming cylinder temperature     : 240~290°C
  ·   Injection molding tool temperature           : 40~120°C
  ·   Injection molding pressure                       : —
  ·   Compression molding temperature           : —
  ·   Compression molding pressure                : —
  ·   Molding shrinkage rate                            : 0.4~0.6%
  ·   Specific gravity                                       : 1.35~1.42density
    JIS : K6911,K7122
    A.S.T.M   : D792


Mechanical Characteristics
   ·   Tensile strength                       : 1650kgf/cm2
    JIS : K6911,K7113
    A.S.T.M   : D638
  ·   Tensile elongation                   : 3~6%
  ·   Compressive strength             : 1340kgf/cm2
    JIS : K7208
  ·   Flexure strength                     : 1270~2320kgf/cm2
    JIS : K7203
  ·   Izot impact strength                : 16kgf/cm2
    JIS : K7110,K7111
  ·   Rockwell hardness                 : M101
    JIS : K7202
    A.S.T.M   : D785


Thermal Characteristic
   ·  Heat resistance temperature (continuous)         : 93~149°C
   ·  Deflection temperature under load
      a)                  Bending stress18.6kgf/cm2        : 210°C
      b)                  Bending stress 4.6kgf/cm2         : 239°C
     JIS : K7206,K7207
     A.S.T.M   : D648





Nylon 
PA6 Nylon 6 
PA66 Nylon 66
PA66-GF Nylon 66 glass fiber 30%
PA 11 • 12 Nylon 11 • 12
PA 46-GF Nylon • 46

Nylon 6-PA6


Molding Properties

  ·       Drying temperature                                : 80°C
  ·       Drying time                                            : 8~15hr
  ·       Injection forming cylinder temperature    : 240~290°C
  ·       Injection molding tool temperature         : 40~120°C
  ·       Injection molding pressure                     : —
  ·       Compression molding temperature         :
  ·       Compression molding pressure              : —
  ·       Molding shrinkage rate                          : 0.5~1.5%
  ·       Specific gravity                                     : 1.12~1.14density
     JIS            : K6911,K7122
     A.S.T.M   : D792


Mechanical Characteristics

  ·      Tensile strength                               : 700~850kgf/cm2
     JIS : K6911,K7113
     A.S.T.M   : D638
  ·        Tensile elongation                         : 200~300%
  ·        Compressive strength                   : 914kgf/cm2
     JIS : K7208
  ·         Flexure strength                           : —
     JIS : K7203
  ·         Izot impact strength                     : 3.3~5.4kgf/cm2
     JIS : K7110,K7111
  ·         Rockwell hardness                      : R119
     JIS : K7202
     A.S.T.M   : D785

Thermal Characteristic

  ·         Heat resistance temperature (continuous)    : 82~121°C
  ·         Deflection temperature under load
        a)                  Bending stress18.6kgf/cm2        : 68.1°C
        b)                  Bending stress 4.6kgf/cm2         : 203°C
     JIS : K7206,K7207
     A.S.T.M   : D648

Nylon


A group of polyamide resins which are long-chain polymeric amides in which the amide groups form an integral part of the main polymer chain, and which have the characteristic that when formed into a filament the structural elements are oriented in the direction of the axis. Nylon was originally developed as a textile fiber, and high tensile strengths, above 50,000 lb/in2 (344Mpa), are obtainable in the fibers and films. But this high strength is not obtained in the molded or extruded resins because of the lack of oriented stretching. When nylon powder that has been precipitated from solution is pressed and sintered, the parts have high crystallinity and very high compressive strength, but they are not as though as molded nylon.


Nylons are produced from the polymerization of a dibasic acid and a diamine. The most common one of the group is that obtained by the reaction of adipic acid with hexamethylenediamine. The nylon molding and extruding resin of Du Pont, Elvamide 8042, formerly Zytel 42, has a tensile strength of 12,500 lb/in2 (106Mpa) with elongation above 100%,a flexural strength of 13,800 lb/in2 (95Mpa), hardness of Rockwell R118, a flow temperature of 480°F (249°C) and dielectric  strength of 350 volts per mil (14 X 106 volts per meter).


All of the nylons are highly resistant to common solvents and to alkalies, but are attacked by strong mineral acids. Molded parts have light weight, with a specific gravity about 1.14, good shock-absorbing ability, good abrasion resistance, very low coefficient of friction, and high melting point, up to about 482°F (250°C). A disadvantage is their high water absorption and the resulting dimensional changes in moldings in service. They are much used for such parts as gears, bearings, cams, and linkages. The electrical characteristics are about the same as those of the cellulosic plastics. As a wire insulation, nylon is valued for its toughness and solvents resistance. Nylon fibers are strong, tough, and elastic, and have high gloss. The finer fibers are easily spun into yarns for weaving or knitting either alone or in blends with other fibers, and they can be crimped and heat-set. The Nylon fiber  of the Firestone Tire & Rubber Co., used for making carpets, is nylon staple fiber, lofted, or wrinkled, to give the carpet a bulky texture resembling wool. Caprolan tire cord, made from nylon 6 of high molecular weight, has the yarn drawn to four or five time its original length to orient the polymer and give one-half twist per inch. Nylon film is made in thickness down to 0.002 in (0.005 cm) for heat-sealed wrapping, especially for food products where tight impermeable enclosures are needed. Nylon sheet, for gaskets and laminated facings, comes transparent or in colors in thickness from 0.005 to 0.060 in (0.013 to 0.152 cm). Nylon monofilament is used for brushes, surgical sutures, tennis strings, and fishing lines. Filament and fiber, when stretched, have a low specific gravity down to 1.068, and the tensile strength may be well above 50,000 lb/in2 (344MPa). Nylon fibers made by condensation with oxalic acid esters have high resistance to fatigue when wet.


Nylon 6 is made from caprolactam, which has the empirical formula (CH2)5NH ·C: O, with a single 6-carbon ring. Molded parts have a tensile strength of 11,700 lb/in2 (79MPa), elongation 70%, dielectric strength 440 volts per mil (17.3 X 106 volts per meter) and melting point 420°F (216°C). Nylon foam, or cellular nylon, for lightweight buoys and flotation products, is made from nylon 6. The foam is produced by Du Pont in slabs, rods, and sheets. Densities range from 1 to 8 lb/ft3 (16 to 128 kg/m3). The low densities are flexible, but the high-density material is rigid with a load-carrying capacity about the same as that of balsa wood. Nylon 6/10 is tough, relatively heat-resistance, and has a very low brittleness temperature. It absorbs about one-third as much moisture as type 6 and half as much as type 6/6. Nylon 9 is made from soybean oil by reacting with ozone. It has better water resistance than other nylons and is used for coatings. Nylon 11, originally marketed in France as Rilsan, is a polycondensation products of aminoundeconic acid which is made by a complex process from the recinoleic acid of castor oil. This type of nylon has superior dimensional stability and is valued for injection moldings. Nylon 12 is a similar plastic. It is a lauro lactam synthesized from butadiene. It has a low water absorption and good strength and stability, and it is used for packaging film, coatings for metals, and moldings. Nylon 4 is a polypyrrolidine used for textile fibers. The molecular chain has more amide groups than do the chains of the other nylons, and its ability to absorb moisture is about the same as that of cotton. Fabrics made from it do not have the hot feel usual with other synthetic fibers and they have better pressability  and are free of static. Alrac Nylon, of the Radiation Research Corp., is nylon 4. Moldings of nylon 6/6 have a specific gravity of 1.14 and have a tensile strength of 11,500 lb/in2 (78MPa). It is used for gears and mechanical parts, and mechanical parts, and its physical properties may be further increased by adding glass fibers or spheres as fillers. Nylon copolymers of types 6 and 6/6 are flexible materials with extra-high impact resistance, even at —40°F (—40°C), and good heat resistanc .


Nylon products are marketed under many trade names. Nylatron G, of the Polymer Corp., is graphite-impregnated nylon in rods and strip for making gears, bearings, and packings. Nylasint, of this company, for bearings, is sintered nylon impregnated with oil. Flafon, of Hewitt-Robbins, Inc., is a rayon-nylon fabric with nylon traverse threads. It is flexible and has about twice the strength of cotton fabric. It is used for conveyor belts. Fiberthin, of the U.S. Rubber Co., is a thin waterproof fabric used to replaced heavier tarpaulins for protective coverings. It is woven of nylon and coated with plastic. It weighs 5 oz/yd2 (0.17 kg/m2) and has a tensile strength of 175 lb/in (31kg/cm) of width. Facilon, of the Sun Chemical Corp., a caprolan nylon fabric impregnated with vinyl resin, is used for facing wall panels and flexible floor coverings. It comes in colors and embossing.


Application of Nylon 6, Nylon 66, and Nylon 11·12
 ·         Gears, cams, bearings
 ·         Packaging materials
 ·         Switches
 ·         Fasteners
 ·         Combs


PA6 Nylon 6
PA6-GF Nylon 6 glass fiber 30%
PA66 Nylon 66
PA66-GF Nylon 66 glass fiber 30%
PA 11 • 12 Nylon 11 • 12
PA 46-GF Nylon • 46








   








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