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ABS.PS.PP.PE materials such as the main purpose of the characteristics and the difference between the various labels:
ABS has good rigidity, impact strength, heat resistance, low temperature resistance, chemical resistance, mechanical strength and electrical performance, easy processing, processing dimensional stability and surface gloss, easy coating, coloring, can also spray metal , Electroplating, welding and bonding and other secondary processing performance. Main applications: automotive, appliances, electronics / electrical appliances, building materials, ABS alloy / blends
PS (polystyrene) electrical insulation (especially high-frequency insulation) is excellent, colorless and transparent, light transmittance second only to plexiglass, coloring water resistance, good chemical stability, strength in general, Easy to produce stress brittle, impatient benzene. Gasoline and other organic solvents. Is suitable for making transparent insulating pieces. Decorative pieces and chemical equipment. Optical instruments and other parts.
PE (polyethylene) is divided into three categories, namely, high-pressure low-density polyethylene (LDPE), high-density polyethylene (HDPE) and linear low-density polyethylene (LLDPE). The main processing products are film, followed by sheet and coating, bottles, cans, barrels and other hollow containers and other injection and blow molding products, pipe and wire, cable insulation and sheathing. Mainly used for packaging, agriculture and transportation departments.
PP (polypropylene) plastic cheap, light, good processing and wide use of catalysts and new technology to further promote the development of the field of application of the expansion, it was said: "As long as there is a product of plastic material replaced, then this product There is the potential to use polypropylene. "
Main purposes: woven bags, tarpaulins, durable consumer goods: such as automobiles, home appliances and carpets.
PMMA commonly known as plexiglass, also known as acrylic or acrylic, Hong Kong people called Acrylic, is an important early development of thermoplastic plastic, has good transparency, chemical stability and weather resistance, easy to dye, easy Processing, beautiful appearance, in the construction industry has a wide range of applications Transparent choice of a specific plastic. Daily transparent materials:
1. Transparent film categories: packaging PE PP PS PVC and PET, agricultural PE PVC and PET, and so on;
2. Transparent sheet categories: PP PVC PET PMMA and PC, and so on;
3. Transparent tube categories: PVC PA, and so on;
4. Transparent bottles categories: PVC PET PP PS and PC.
Second, the lighting equipment class material: SPC, 6 mainly used as lampshades, PS modified PS AS PMMA and PC.
3. Optical instrument materials: 1. Rigid lens body mainly with CR-39 and J.D two; 2. Contact lenses commonly used HEMA.
4. Glass type material: 1. Traffic glass commonly used PMMA and PC two; 2. Building glass commonly used PVF and PET.
V. solar materials: commonly used PMMA PC GF-UP FEP PVF and SI and so on.
Fiber material: core layer with PMMA or PC, the coating is fluorinated olefin polymer fluorinated methyl methacrylate.
7. Optical materials: commonly used PC PMMA.
8. Transparent packaging materials: the surface hardened PMMA FEP EVA EMA PVB and so on.
PE ultrahigh molecular weight polyethylene engineering plastics (UHMW --- PE) pipeline technology in China is maturing, more and more projects using the pipeline, as a moderate price performance of new thermoplastic engineering plastics, it is almost concentrated The advantages of various plastics, wear-resistant impact, self-lubricating, corrosion resistance, low temperature, health non-toxic, non-stick, non-absorbent and other comprehensive performance. Is an ideal pipe, the domestic metallurgical, power, chemical and other enterprises widely used.
PE-polyethylene plastic properties Polyethylene is a polymer organic compounds, polymerized by ethylene, is divided into low molecular weight and high molecular weight two, low molecular weight liquid in general, colorless, odorless, insoluble in water, density 0.92 ~ 0.96 g / cm 3, can do lubricants and coatings; high molecular weight is generally solid, milky white, thermoplastic large, hand-touch with wax sense, the density of 0.92 ~ 0.96 g / cm 3 . It is corrosion-resistant, good insulation properties. High-density polyethylene with rigidity, hardness and mechanical strength characteristics, can do containers, pipes, can also do high-frequency electrical insulation materials for radar and television. It is insoluble in water, water absorption is very small, is for some chemical solvents, such as toluene, acetic acid, etc., and only in 70 ℃ above the temperature was slightly dissolved. However, polyethylene in the form of particles can be melted or solidified with the change of temperature between 15 ℃ and 40 ℃. When the temperature rises, it will melt and absorb heat. When the temperature decreases, it solidifies and releases heat. And because it is a small water absorption, not easy to wet, with insulation properties, it is a good building materials. The polyethylene particles in the cement, can do the walls and floors. It absorbs heat when the room temperature rises and absorbs heat as it absorbs heat and solidifies at normal temperature. When the temperature decreases, it solidifies and releases heat. So that the room temperature can be stabilized. So it is a kind of good thermal storage material. According to its other characteristics, this building material also has leakage protection, heat-proof, moisture-proof and anti-corrosion effect
PC plastic properties Polycarbonate (PC) is a colorless and transparent engineering plastics, has a very high impact strength, wide temperature range, good creep resistance, electrical insulation and dimensional stability; Sensitive to the notch, poor resistance to environmental stress cracking, molding with metal inserts more difficult products.
PC is an amorphous, odorless, non-toxic, highly transparent colorless or slightly yellow thermoplastic engineering plastic, has excellent physical and mechanical properties, in particular, excellent impact resistance, tensile strength, bending strength, high compressive strength; Low creep, dimensional stability; has good heat resistance and low temperature resistance, in a wide temperature range with a stable mechanical properties, dimensional stability, electrical properties and flame retardant, in -60 ~ 120 ℃ Due to molecular chain rigidity, the resin melt viscosity; water absorption rate is small, small shrinkage, high dimensional accuracy, dimensional stability, the membrane permeability is small, the temperature is high, the temperature is low; Resistant to acid, alkali, oxidizing acids and amines, ketones, soluble in chlorinated hydrocarbons and aromatic solvents, but also in light, Long-term in the water easily lead to hydrolysis and cracking, the disadvantage is due to poor fatigue strength, easy to produce stress cracking, poor solvent resistance, poor wear ABS ABS plastic properties ABS resin is a blend of acrylonitrile - Styrene-ethylene copolymer, the English name Acrylonitrile-butadine-styrene (referred to as ABS), the ratio of the three 20:30:50 (melting point of 175 ° C). As long as the ratio of the three, combination of methods, particle size, can produce a series of different impact strength, flow characteristics of the species, such as the butadiene component increases, the impact strength will be improved, but the hardness And the fluidity is lowered, and the strength and the heat resistance are reduced. In this case,
Second, ABS molding process ABS is a water-absorbing plastic, at room temperature, 24 hours can absorb 0.2% -0.35% moisture, although this moisture accountants will not constitute a significant impact on the mechanical properties, but if the humidity exceeds 0.2% Plastic surface will be greatly affected, so the ABS molding process, be sure to dry in advance, and the moisture content after drying should be less than 0.2%. Modified ABS
ABS resin is acrylonitrile-butadiene-styrene copolymer, English name Acrylonitrile-butadine-styrene (referred to as ABS), is a large general-purpose resin, modified (with additives or alloys and other methods) to improve the performance of the ABS project Plastic, ABS alloy yield, variety, wide application, is the main modified plastics.
ABS is light yellow granule or bead opaque resin, non-toxic, tasteless, low water absorption, has good comprehensive physical and mechanical properties, such as excellent electrical properties, wear resistance, dimensional stability, chemical resistance and surface gloss, And easy to process molding. Disadvantages are weatherability, poor heat resistance, and flammable. ABS also has a good mix of mixed with a variety of resin alloy (blends), such as PC / ABS, ABS / PC, ABS / PVC, PA / ABS, PBT / ABS, so that the new Performance and new applications, ABS and MMA blends can be made transparent ABS, light transmission rate of up to 80%. ABS processing problems Flash flash, bubbles, shrink marks, weld marks, charred and black lines, silver and stripes, surface scratches, surface fog and pattern, charred discoloration and impurities, black, shiny bad, turtle Cracked white, uneven color, fragile, delamination, warping deformation, mold release bad, mold serious corrosion.
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