ABS plastics resin has higher hardness, better toughness and more gloss than PP. The temperature resistance of the two is similar. But the chemical resistance of PP is better and the price is lower.
1. Different uses
Most ABS is non-toxic, impervious to water, but slightly permeable to water vapor, low water absorption rate, room temperature immersion water absorption rate is not more than 1% a year, and the physical properties do not change. ABS resin product surface can be polished, can get high gloss products. It is 3-5 times stronger than ordinary plastics. ABS plastics have been widely used in machinery, electrical, textile, automobile, aircraft, ship and other manufacturing industries and chemical industry.
Polypropylene PP chemical stability is very good, in addition to can be concentrated sulfuric acid, concentrated nitric acid erosion, other kinds of chemical reagents are relatively stable, but low molecular weight aliphatic hydrocarbons, aromatic hydrocarbons and chlorinated hydrocarbons can make polypropylene softening and swelling, at the same time its chemical stability with the increase of crystallinity and improve, so polypropylene is suitable for making all kinds of chemical pipes and accessories, Good anti-corrosion effect.
2. Different ingredients
ABS plastic is A terpolymer of acrylonitrile (A), butadiene (B), styrene (S) three monomers, the relative content of the three monomers can be arbitrarily changed to make a variety of resins. ABS plastic has the common properties of three components: A makes it resistant to chemical corrosion and heat, and has certain surface hardness; B makes it have high elasticity and toughness; S makes it have the processing and forming characteristics of thermoplastic and improves the electrical properties. Therefore, ABS plastic is a kind of “tough, hard and rigid” material with easy access to raw materials, good comprehensive performance, cheap price and wide use.
PP plastic generally refers to polypropylene, methyl arranged on the same side of the molecular chain called isotactic polypropylene, if methyl unordered arranged on both sides of the molecular chain called atactic polypropylene, when methyl alternately arranged on both sides of the molecular chain called intertactic polypropylene.
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