PVC RESIN (SUSPENSION)

GENERAL DESCRIPTION OF PVC

PVC, a synthetic resin belonging to the family of polymeric organic compounds, manufactured by bulk, solution, suspension, and emulsion polymerization of vinyl chloride monomer, with free-radical initiators (peroxide catalyst), usually in aqueous suspension or emulsion. After mixing with plasticizers, stabilizers, and pigments, the resin may be fabricated by techniques such as calendering, molding, or extrusion into flexible articles such as raincoats, shower curtains, and packaging films. The resin is not plasticized for use in making rigid products such as water pipe, plumbing fittings, and phonograph records. For use in making piping or structural panels that require high resistance to impact, polyvinyl chloride often is blended with small proportions of rubbery synthetic polymers. Resins more easily plasticized than polyvinyl chloride can be prepared by adding various proportions of vinyl acetate to vinyl chloride before polymerizing the mixture; stiffer resins result from treatment of polyvinyl chloride with chlorine.

APPLICATIONS

Pure PVC finds application in the construction trades, where its rigidity and low flammability are useful in pipe, conduit, siding, window frames, and door frames. In combination with plasticizer (sometimes in concentrations as high as 50 percent), it is familiar to consumers as floor tile, garden hose, imitation leather upholstery, and shower curtains.

SPECIFICATION

PROPERTY

TEST METHOD

GRADE

 

 

SUS K-66

SUS K-78

POLYMERIZATION DEGREE

JIS K6721-77
1000 ± 50

1650 ± 60

K-VALUE

DIN 53726

66 ± 1

78 ± 1

BULK DENSITY (g/c.cm)

ASTM D1895-90
0.54 ± 0.04
0.50 ± 0.04

SPECIFIC GRAVITY at 23 C

ASTM D790

ca 1.4

ca 1.4

PARTICLE SIZE

-45 mesh

0.2% max

0.2% max

VOLATILES at 110 C for 1 H

ASTM D3030-90

0.3% max

0.3% max

PROCESSING CHARACTERISTICS

PROPERTY

UNIT

TEST METHOD

GRADE

 

 

 

SUS K-66

SUS K-78

IMPACT STRENGH

kg cm/cm2

ASTM D256-93

>4.0

>3.9

TENSILE STRENGTH

kg /cm2

ASTM D638-91

>540

>560

ELONGATION

%

ASTM D638-91

250

260

HEAT STABILITY

min

ASTM D2115-92

58

68

ELECTRICAL VOLUME RESISTANCE

ohmcm

JIS K6723-83

1.13X1013

1.94X1013

DOP ABSORBABILTY

phr

ASTM D3367-90

21

32

FUSION TIME

sec

ASTM D2538-88

180

-

MIN. TORQUE

mg

ASTM D2538-88

2550

-

PLASTICIZER ABSORPTION RATE

min

ASTM D2396-88

5' 30"

3' 30"

COMMENTS

Packing : 25kgs in bag, 1mt in bag