PP and ABS, What is the difference?
Source:    Publish Time: 2011-12-13 22:13   8107 Views   Size:  16px  14px  12px
PP and ABS, What is the difference?



PP and ABS, What is the difference?



ABS: acrylonitrile, butadiene, styrene plastic
Acrylonitrile, butadiene, styrene monomer graft polymerization of three kinds of products, taking their name the first letter of the English name. It is a high strength, toughness, and excellent overall performance of the resin, widely used, commonly used for engineering plastics. Industry mostly polybutadiene latex or low styrene content styrene butadiene rubber-based chain, and acrylonitrile, styrene monomer mixture graft polymerization system. In fact, it is often the graft polymer containing butadiene and acrylonitrile - styrene copolymer SAN (also known as AS) mixture. In recent years there first with styrene, acrylonitrile copolymer of two monomers, and then with the ABS graft copolymer resin mixed in different proportions to get the system to adapt to a variety of different uses ABS resin. The mid-1950s, industrial production has begun in the United States.
Industrial production methods can be divided into two categories: one is the polybutadiene or styrene-butadiene rubber and the SAN resin in the roller on the mechanical mixing, or blending the two kinds of latex, and then copolymer; the other is in the poly- styrene butadiene or styrene-butadiene latex by adding low levels of styrene and acrylonitrile monomer emulsion graft copolymer, or re-order with SAN resin mixed in different proportions.
Structures, properties and applications in the ABS resin, the rubber particles were dispersed phase, dispersed in the SAN resin continuous phase. When by the impact, cross-linked rubber particles to withstand and absorb this energy, the stress dispersion, thereby preventing the development of cracks, thus improving the anti-tear properties.
Graft copolymerization aimed at improving the surface of the rubber particles and resin compatibility and adhesion phase. This is the number of free and grafted SAN resin main chain in the rubber composition of the SAN resin. Both resin acrylonitrile content of the difference should not be too large, otherwise compatibility is not good, will lead to cracking of rubber and resin interface.
ABS resin can be injection molding, extrusion, vacuum, blow molding, and roll forming method such as plastics processing, but also mechanical, adhesive, coating, vacuum steam with other methods for secondary processing. Because of its excellent overall performance, more extensive use, mainly for construction materials, appliances can also be used for family life. Because of its oil and acid, alkali, salt and chemical reagents with good performance and has the electroplating, plating metal layer on the shiny after a good, light weight, low price, can be used to replace some of the metal. Can also synthesized and heat-resistant self-extinguishing many species to adapt to a variety of purposes.

PP: Polypropylene
Is a semi-crystalline thermoplastics. Has high impact resistance, mechanical properties tough, anti-organic solvent and acid corrosion. In the industrial sector has a wide range of applications, is usually one of the common polymer materials. Australian coins also uses polypropylene production. Used to making repeated bending of the product, power cord plug connectors. Such as: repeated opening and closing the box, and so require.

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