Products Composition
Polyvinyl chloride resin (PVC), English name Polyvinyl Chloride, is made of chlorine A polymer formed by free radical polymerization of ethylene monomer, with a chlorine content of about 57wt%.
PVC is one of the earliest resins to realize industrialization. It is cheap, and its usage in construction materials, people's livelihood and other application fields is increasing day by day, and its demand is increasing rapidly. It is one of the five general-purpose resins.
Products Features
1. PVC molecules are entangled and contain polar groups of chlorine atoms, so that The intermolecular forces are strong, and this structure improves the rigidity, hardness, and mechanics of PVC processed products, and endows them with excellent flame retardant properties.
2, PVC resin main chain contains chlorine atoms between two adjacent carbon atoms And hydrogen atoms, causing PVC to easily degrade under the action of light and heat to form hydrogen chloride (HCL) gas.
3. Performance of PVC:
(1) General performance:
PVC is a white powder with a relative density of 1.35-1.45 (g/cc), The softness and hardness of the processed products can be made into products with widely different softness and hardness by the amount of plasticizer added during processing.
(2) Mechanical properties:
The tensile strength of PVC increases with the increase of the degree of polymerization, but PVC The amount of plasticizer added in different materials has a great influence on the mechanical properties. Generally speaking, as the content of plasticizer increases, the mechanical properties decrease, but the elongation at break increases.
(3) Thermal properties:
The glass transition point temperature of PVC is 80-86℃, PVC resin is at 140℃ That is to say, it begins to decompose and produce HCL, which accelerates rapidly to 180°C. Generally, the melting temperature of PVC is 160°C.
(4) Electrical properties:
PVC is a kind of excellent electrical insulation, the volume impedance value is higher than 10^ 14, but the volume impedance is easily affected by the types of processing additives and additives.
(5) Chemical resistance
PVC is resistant to most inorganic acids (except fuming sulfuric acid and concentrated nitric acid), Alkali, most organic solvents (ethanol, gasoline and mineral oil) and inorganic salts, suitable as chemical resistant materials. However, PVC is easy to swell or dissolve in esters, ketones, aromatic hydrocarbons and halogenated hydrocarbons, and the best solvents are tetrahydrofuran and nitrobenzene.
Products Advantages
PVC quality is stable, PVC supply is stable, and it complies with international environmental regulations.
Products Category
| Model | Features | Use |
| S-58 | Excellent gelling property, high transparency and low processing melt viscosity | Applicable to hard tape, hard board, pipe fittings, building materials, shrink film, foam , container blowing, highly transparent hard products and injection molding products of large complex molds |
| S-60 | Excellent gelling property and high transparency | Suitable for hard tape, hard board, pipe fittings, building materials, wire plugs, packaging materials , floor materials, shrink film, foaming, container blowing, high transparent hard products |
| S-60S | Excellent gelling property and high transparency | Suitable for hard tape, hard board, pipe fittings, building materials, especially for high transparency Rigid board products |
| S-65 | Excellent plasticizer absorption and thermal stability | Suitable for soft cloth rubber, soft shaped extrusions, wires and cables |
| S-65D | High false specific gravity, high extrusion volume, excellent initial coloring | Suitable for outdoor siding and hard pipe hard special-shaped extrusion, pipe (large caliber), exterior siding, window frames |
| S-65S | In addition to the physical properties and uses of S-65, it also has excellent initial Colored and especially suitable for products with strict requirements on color and luster | Applicable to transparent products, shrink film, transparent calendering, soft tape, rubber , artificial leather, wires (cables), shoe materials, hoses, pipes, hard boards, building materials, window frames, foaming, extrusion products |
| S-70 | High porosity, excellent oil absorption and good electrical properties, suitable for wires , Cable insulation and coating | It can be used for cables and wires, soft cloth, artificial leather, shoe materials, hose materials, Medical materials, flexible films, cable jackets |
| S-70R | Has high porosity, good fish eye quality and excellent oil absorption and excellent Electrical properties, suitable for insulation and coating of wires and cables | Suitable for internal insulation and external covering of high insulation wire and cable |
| S-75 | Excellent plasticizer absorption, excellent mechanical and physical properties and good Electrical properties, suitable for insulation processing of wire and cable | Suitable for adhesive film, tape processing, pool waterproof tape, high insulation wire and cable , blowing equipment |
| S-80 | Excellent plasticizer absorption, can increase softness and elasticity, suitable for High elastic material | Suitable for excellent mechanical properties and high elastic finished product processing, blown plastic boats, air Beds, water beds, medical materials, automotive beading |
| S-85 | Excellent plasticizer absorption, can increase softness and elasticity, suitable for High elastic material | Suitable for excellent mechanical properties and high elastic finished product processing, hose material, mechanical shaft Seals, medical materials |
| S-65C | It can accelerate the chlorination effect and reduce the film | CPVC special |
| S-73R | ||
| S-57 | Good gelation and transparency | Suitable for rigid tape, foam products, injection molding products |
| S-60M | Good gelling property, good fluidity, high transparency and low odor | Suitable for extrusion, injection blow molding products, hard sheet and film Calendering process, color masterbatch that can be applied to artificial leather for automotive interiors |
��Plasticizer absorption, can increase softness and elasticity, suitable for high elastic materials
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