Automotive plastic parts

China's auto industry as an important pillar industry of the national economy, plastic molding process due to its low consumption, the high efficiency, the use recyclable. Automotive plastic covers PP, PVC, ABS, PA, PC, PE, etc. using plastic car parts to replace metal and alloy material parts, not only can the car design more humane, diversification, improve safety, comfort, ornamental, easy assembly and maintenance, more importantly, reduce vehicle weight and reduce fuel consumption and hydrocarbon emissions.

Automotive plastic products and materials

A polyurethane foam polyurethane foam products are widely used in the automotive interior components and absorb vibrations. Its main products are: instrument panels, mirrors frames, bumpers, seat cushions, headrests, steering wheel, control box, dashboard anti-vibration pads, front and rear pillar trim, middle pillar trim, roof lining front, window frames, decorative ceiling and side roof frame, door linings, sun visors, the top shelf decoration.

Second, the car performance parts engineering plastics manufacturing auto parts more common parts which are: the radiator grille (its material ABS, 20% glass fiber reinforced polypropylene), air filter shell (poly propylene), the line inside the lid (polypropylene), dashboard (polypropylene), crankcase cover (nylon 6), timing gear chain box (polypropylene), timing gear (30% glass fiber reinforced POM), mudguard (nylon R-RIM) and the like.

  Third, the plastic matrix composite plastic composites such as automotive products, SMC, DX (POM composite materials) started for the manufacture of automotive structural parts, reducing vehicle weight plays an important role.

PPS material

PPS material

PPS is a polymer compound having a phenylthio group on the main chain, due to its structure and the sulfur are alternately connected to a benzene ring, the molecular chain having a high rigidity and regularity, PPS is a crystalline polymer and thus, has many excellent properties, such as heat resistance, rigidity, flame retardancy and electrical insulation. Lone pair electrons of the sulfur atom such PPS and glass fiber, an inorganic filler and a metal having good affinity for easy-reinforced composite made ​​from a variety of materials and alloys

One, PPS performance

1, physical and mechanical properties of PPS is a white, crystalline high polymer density of 1.34. Excellent mechanical properties, tensile strength and bending strength than PA, PC, PBT, etc., with a high rigidity and resistance to creep, but brittle, low notched impact strength, lower than PA, PC, PBT higher than POM. After the addition of glass fiber reinforced its better mechanical properties. PPS case of inert material, non-toxic.

2, since the thermal properties of the PPS polymer is a crystalline, the maximum degree of crystallinity of up to 65%, and a crystallization temperature of 127 ℃, a melting point of 286 ℃, thermal deformation temperature 260 ℃, 430-460 ℃ in air than before decomposition, thermal stability far beyond the PA, PBT, POM and other engineering plastics, long-term use in thermoplastics highest temperature up to 220-240 ℃. PPS also has good thermal insulation and flame resistance, the critical oxygen index and PVC equivalent of up to 47%, without adding flame retardant, PPS can be achieved UL94-V0 grade level.

3, the molecular structure of the electrical properties of PPS symmetry, polarity, low water absorption, so its very good electrical insulating properties compared with other engineering plastics, small dielectric constant, arc resistance equivalent to thermosetting plastics, high temperature, high under wet conditions such as frequency, PPS can maintain good electrical insulating properties. Adding conductive fillers, conductive PPS can be obtained a composite material for the anti-static and electromagnetic shielding.

4, since the chemical resistance of PPS has a high degree of crystallinity, so it has excellent chemical resistance, below 200 ℃ insoluble in any organic solvent, in addition to strong oxidizing acids, but may be subjected to various types of acids, bases, salts erosion at high temperature after long-term immersion by a variety of chemicals, but also to maintain a high strength after PTFE. PPS also has good resistance to weathering resistance and radio.

Mold material

PPS higher processing temperature, a temperature of plastic material 290-330 ℃, mold temperature of 130-180 ℃, in most cases, while PPS reinforced by glass fiber, containing a relatively large amount of glass fibers, wear problems must be considered, so the mold material should be 140-150 ℃ as a benchmark, the appropriate choice of alloy materials, such as SK, SKD, SKH, etc., hardness HRC60-65, surface plating.