China Supplier Plastic Raw Materials Prices PVC Resin Sg3 Sg5 Sg8
PVC is a white powder with amorphous structure, with a small degree of branching, a relative density of about 1.4, a glass transition temperature of 77-90 ° C, and decomposition at around 170 ° C. The stability to light and heat is poor, above 100 ° C or over a long period of time. When exposed to sunlight, it will decompose to produce hydrogen chloride, and further autocatalytic decomposition, causing discoloration, and physical and mechanical properties are also rapidly declining. In practical applications, stabilizers must be added to improve the stability to heat and light.
Industrial production of PVC molecular weight is generally in the range of 50,000 to 110,000, with greater polydispersity, molecular weight increases with the decrease of polymerization temperature; no fixed melting point, 80-85 ° C begins to soften, 130 ° C becomes viscoelastic state , 160 ~ 180 ° C began to transform into a viscous flow state; has good mechanical properties, tensile strength of about 60MPa, impact strength of 5 ~ 10kJ / m2; has excellent dielectric properties.
PVC was once the world's largest production of general-purpose plastics, and it is widely used. It is widely used in building materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foam materials, sealing materials, fibers, etc.I. Technical Data sheet of PVC Resin:
II. PVC Resin Packing and Loading :
|Number of impurity particle||30max||30max||30max||30max||30max||30max||40max||40max|
|Apparent density, g/ml||0.42min||0.42min||0.42min||0.42min||0.42min||0.42min||0.45min||0.45min|
|Number of grain/400cm 2||40max||40max||40max||40max||40max||40max||40max||40max|
|Plasticizer absorbency value of 100g resin||25||25||25||22||19||16||14||14|
|Residual chlore thylene content, mg/kg||5max||5max||5max||5max||5max||5max||5max||5max|
(1) Packing: 25kg net / pp bag , or kraft bag .
(2) Loading quantity :680Bags/20'container , 17MT/20'container.
(3) Loadint quantity : 1000Bags/40'container, 25MT/40'container.
III. PVC Resin Usage
PVC Resin SG1--mainly used in producing high-grade electrical insulating material.
PVC Resin SG2--mainly used in producing electrical insulating material, common soft products and film.
PVC Resin SG3--mainly used in producing electrical insulating materials, agricultural film, daily-use plastic products.
PVC Resin SG4--mainly used in producing membranelle for industrial and civil use, tube and pipes .
PVC Resin SG5--mainly used in producing transparent products section bar, hard tube and decorative materials .
PVC Resin SG6--mainly used in producing clear foil, hard board and welding rod .
PVC Resin SG7 and SG8--mainly used in producing clear foil, hard injection molding.
IV.Why us :
Factory directly supplying
District quality control
Ensure high quality
Promptly delivery time for your order
More than ten years of exporting experience