Linear low-density polyethylene (LLDPE) is considered to be a new species of "third-generation polyethylene". Compared with ordinary LLDPE, LLDPE consumes less energy and produces higher yields. In particular, its physical and chemical properties are much better than those of ordinary low-density polyethylene, and it has a wide range of uses.
(hips) Impact resistant polystyrene is an impact resistant polystyrene product produced by adding polybutyl rubber pellets to polystyrene. This polystyrene product adds micron-sized rubber particles and joins the polystyrene to the rubber particles by means of branching. Upon impact, the crack extension tip stresses are released by the relatively soft rubber particles. As a result, crack propagation is impeded and impact resistance is improved. Polystyrene is a versatile and brittle plastic. The case of the computer you are using right now is polystyrene. The clear plastic water cups, and the Styrofoam used for packaging are also made from polystyrene. Polystyrene is a polyolefin and is made from styrene by free radical polymerization. A new type of polystyrene, syndiotactic, can be obtained by metallocene-catalyzed polymerization. Syndiotactic polystyrene is a new type of polystyrene, namely, syndiotactic, in which the benzene rings on syndiotactic polystyrene are alternately attached to both sides of the main chain, whereas the benzene rings of ordinary polystyrene are randomly attached to both sides of the main chain. Syndiotactic polystyrene is a crystalline polymer with a melting point of 270℃. Polybutadiene is added to the styrene polymerization system so that styrene is grafted and polymerized on the main chain of polybutadiene. Polystyrene and polybutadiene are incompatible, so the styrene and butadiene chain segments aggregate separately, producing phase separation. These polybutadiene phase regions can absorb impact energy, which improves the impact strength of polystyrene
Polystyrene (PS) is polymerized from styrene monomer (SM), which can be polymerized by a variety of synthetic methods, and is currently the main method used by the industry in the body polymerization method and suspension polymerization method. Polystyrene's English name is Polystyrene, referred to as PS (hereinafter or referred to as PS).PS is a thermoplastic non-crystalline resin, mainly divided into general-purpose grade polystyrene (GPPS, commonly known as Turbostyrene), impact-resistant grade polystyrene (HIPS, commonly known as Modified Polystyrene) and foaming grade polystyrene (EPS).
Polypropylene (PP) is one of the lighter of the common plastics, its electrical properties are excellent, can be used as moisture and heat high-frequency insulating material applications.PP is a crystalline polymer, melt condensation due to the specific volume change, the degree of molecular orientation of the degree of high and present a large shrinkage (1.0%-1.5%).PP in the molten state, the use of warming to reduce the viscosity is not very useful. Therefore, in the molding process, should increase the injection pressure and shear rate, in order to improve the molding quality of the products. 0.94g/cm
I. Characteristics
1, corrosion resistance
2, rust resistance
3, lightweight
4, high temperature resistance
5, aging resistance, long service life
6, surface finish
7, high temperature resistance
6, excellent surface finish7, adequate thermal stability
8, low thermal melt rate and excellent surface smoothness and good food grade approval
Second, the application of
1, chemical chemical tanks manufacturing and processing
2, high acid and alkali solution reservoirs
3, treatment equipment building materials
4, Electronic plating equipment containers
5, laboratory equipment and utensils
6, general-purpose processing instruments and equipment
7, scrubbers, air filtration systems, conduit systems
8, exhaust gas treatment scrubber system
9, circuit printed circuit board pickling equipment
10, plating tanks
11, medical applications components< /p>
12, computer digital processing centers and precision equipment components
Third, the application of industrial
1, chemical processing industry
2, the surface treatment industry
3, medicine
4, life sciences
Polycarbonate (pc) colorless and transparent, heat-resistant, impact-resistant, flame-retardant, in the ordinary use of the temperature within the Have good mechanical properties. With performance close to polymethyl methacrylate compared to polycarbonate impact resistance, high refractive index, good processing performance, without additives with UL94 V-0 flame retardant properties. However, polymethyl methacrylate is less expensive than polycarbonate, and can be produced through the method of polymerization of large devices. With the increasing scale of polycarbonate production, the price difference between polycarbonate and polymethylmethacrylate is decreasing.
Polycarbonate has poor abrasion resistance. Some polycarbonate devices used in abrasion-prone applications require special surface treatments.
Polycarbonate is a common everyday material. Because of its colorless transparency and excellent impact resistance, common daily applications include CD-ROMs, eye pieces, water bottles, bulletproof glass, goggles, bank bulletproof glass, headlights, etc., animal cages, pet cages, etc.
Polycarbonate is a common everyday material.
Polyamide (pa) for tough angular translucent or milky white crystalline resin, as engineering plastics polyamide molecular weight is generally 1.5-3 million. Polyamide has high mechanical strength, high softening point, heat resistance, low coefficient of friction, abrasion resistance, self-lubricating, vibration absorption and muffling, oil resistance, weak acid resistance, alkali resistance and general solvents, good electrical insulation, self-extinguishing, non-toxic, non-odor, weathering is good, poor dyeing. The disadvantage is that the water absorption is large, affecting the dimensional stability and electrical properties, fiber reinforced can reduce the resin water absorption, so that it can work at high temperatures, high humidity. Polyamide and glass fiber affinity is very good. Commonly used in the production of combs, toothbrushes, coat hooks, fan bones, mesh bags, rope, fruit bags and so on. Non-toxic, but not long-term contact with acids and alkalis.