China Building Raw Material PVC Resin Sg3 Sg5 Sg7 Sg8 PVC Resin

Building Raw Material PVC Resin Sg3 Sg5 Sg7 Sg8 PVC Resin

PVC Resin 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:

ItemSG1SG2SG3SG4SG5SG6SG7SG8K Value77-7574-7372-7170-6968-6665-6362-6059-55Viscosity,ml/g156-144143-136135-127126-119118-107106-9695-8786-73Number of impurity particle30max30max30max30max30max30max40max40maxvolatiles content%,0.4max0.4max0.4max0.4max0.4max0.4max0.4max0.4maxApparent density, g/ml0.42min0.42min0.42min0.42min0.42min0.42min0.45min0.45minNumber of grain/400cm 240max40max40max40max40max40max40max40maxwhiteness74%min74%min74%min74%min74%min74%min70%min70%minPlasticizer absorbency value of 100g resin2525252219161414Residual chlore thylene content, mg/kg5max5max5max5max5max5max5max5max

II. PVC Resin Packing and Loading :
(1) Packing : 25kg net/pp bag, or kraft paper bag .
(2) Loading quantity : 680Bags/20'container, 17MT/20'container .
(3) Loading 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.
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