What Is PVC Resin?

PVC resin is a polar non-crystalline polymer with strong interaction between molecules. It is a hard and brittle material; its impact strength is low. After the impact modifier is added, the elastomer particles of the impact modifier can reduce the total silver grain induced stress, and use the deformation and shear band of the particle itself to prevent the silver grain from expanding and growing, and absorb the impact of the incoming material. Energy, so as to achieve the purpose of impact resistance. The particles of the modifier are very small, so as to increase the amount of the modifier per unit weight or volume, and increase its effective volume fraction, thereby enhancing the ability to disperse stress. Currently, organic impact modifiers are widely used.

pvc resin

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PVC resin is a polar amorphous polymer with strong interaction between molecules. It is a hard and brittle material with low impact strength. After adding impact modifier, impact

PVC resin (polyvinylchloride) is important

PVC resin, physical appearance is white powder, non-toxic and odorless. The relative density is 1.35-1.46, and the refractive index is 1.544 (20 ° C). It is insoluble in water, gasoline, alcohol and vinyl chloride, and soluble in acetone, dichloroethane, xylene and other solvents. It has high chemical stability and good plasticity. Except for a few organic solvents, it can withstand any concentration of hydrochloric acid, sulfuric acid below 90%, nitric acid 50-60%, and caustic soda below 20% at room temperature. In addition, it is also quite stable for salts. It emits hydrogen chloride (HCl), but self-extinguishes when it leaves the flame. It is a "self-extinguishing" and "flammable" substance; PVC begins to decompose above 100 ° C and slowly releases HCl. As the temperature increases, it decomposes and releases HCl Speed up, causing PVC to change color.

PVC is passed by vinyl chloride

PVC resin can be processed into various plastic products. According to its purpose, it can be divided into two categories: soft and hard products. It is mainly used for the production of transparent sheets, pipe fittings, gold cards, blood transfusion equipment, soft and hard pipes, plates, doors and windows,

There are suspension polymerization method, emulsion polymerization method and bulk polymerization method. The suspension polymerization method is the main method, which accounts for about 80% of the total PVC production.

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Suspension PVC resin current model

SG-1: K value 77-75 average degree of polymerization /

SG-2: K value 74-73 average degree of polymerization /

SG-3: K value 72-71 average degree of polymerization 1350-1250

SG-4: K value 70-69 average degree of polymerization 1250-1150

SG-5: K value 68-66 average degree of polymerization 1100-1000

SG-6: K value 65-63 average degree of polymerization 950-850

SG-7: K value 62-60 average degree of polymerization 850-750

SG-8: K value 59-55, average degree of polymerization 750-650