For PVC impact modifier detailed description

PVC impact modifier also can be seen as a plasticizer ----- As also played plasticizing role do technology should not be too rigid. Lot of stuff can all be flexible and mobile. Metallic stearate
Excessive type impact modifier, between the structure between the two structures, such as ABS. PVC resin for specific varieties are: chlorinated polyethylene (CPE) is the use of HDPE in the water phase of the powdery product by suspension chlorination, so as to increase the degree of chlorination of HDPE original crystals become amorphous elastic body. Used as a toughening agent C? E, containing 25-45% amount is generally C1. CPE wide source of low price, in addition to a toughening effect, but also resistant to cold resistance, weather resistance, flame resistance, and chemical resistance. At present in China is dominated by CPE impact modifiers, especially in the production of PVC pipes and profiles, most plants use CPE. Added amount is generally 5-15 copies. CPE can be used in conjunction with other plasticizer, such as rubber, EVA, the effect is better, but even in aging rubber additives. PVC flame retardant
ACR is methyl methacrylate, acrylate monomers, ACR is best developed in recent years, impact modifiers, which can increase the impact strength of the material several times. ACR core-shell structure is an impact modifier, methyl methacrylate - ethyl acrylate composition of the shell polymer, crosslinked acrylic or butyl rubber elastic body is formed as the core of the particle distribution of the inner segment. Particularly suitable for outdoor use PVC plastic products, impact-modified PVC plastic window profiles used in the ACR as impact modifiers and other modifiers processing performance compared with the smooth surface, good aging resistance, high strength welding angle characteristics, but the price CPE, High 1/3. Common foreign brands such as K-355, the general amount 6-10 copies. The current domestic production of the manufacturers ACR impact modifier fewer manufacturers use less.
MBS is a methyl methacrylate, butadiene and styrene copolymer of the monomers. MBS between the solubility parameter of 94-9.5, with PVC solubility parameter close, so when the good compatibility with PVC, its most important feature: added later can be made transparent PVC products. Generally added in PVC 10-17 parts of PVC can be 6-15 times the impact strength increased, but the MBS add greater than 30 parts, PVC impact strength decreased. MBS itself has a good impact resistance, good transparency, light transmission rate of 90%, and to improve the impact resistance while other properties of the resin, such as tensile strength, elongation at break little effect. MBS higher prices, often with other impact modifiers, such as EAV, CPE, SBS, etc. and use. MBS poor heat resistance, weather resistance, not suitable for long-term outdoor use made products, generally do not do plastic doors and windows profile production impact modifiers.