Sell chemical reagent TAIC |
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China
| A.Crosslinking Coagent ALVINCHENYAN..YAHOO.COM
TAIC is widely used as a coagent for peroxide crosslinking or radiation crosslinking of Chlorinated Polyethylene (CPE), EPDM, Fluroelaster and so on. 1) Polyolefines TAIC is availavle for linking by x-ray, y-ray electron or ultra violet ray radiation and the product polyolefines have the superior insolubility to solvents and the tensile strength at high temperature could be improved. 2) Chlorinated Polyethylene (CPE) TAIC is effective modifier to heat resistance with increasing of crosslinking density for peroxide crosslinking denisty for peroxide crosslinking of CPE. Since TAIC acts as an acceptor of HCI which is envolved from CPE at crosslinking reaction and deterioriates its physical properties. Table 2 is an example of crosslinking of CPE using TAIC 3) Ethylene Vinyl Acetate Copolymer (EVA) TAIC is the most effecdtive coagent for crosslinking EVA. The effectivness of crosslinking coagent which acts in peroxide crosslinking of EVA is as follows; TAIC = TAC > DVB => TMPTMA = DAP = EGDM > NON TAIC Triallyl isocyanurate TAC Triallyl cyanurate DVB Divinyl Benzen TMPTMA Trimethylolpropane trimethacrylate DAP Diallyl phthalate EGDM Ethyleneglycol dimethacrylate NON None of crosslinking coagent And Fig. 7 shows the relation of Tensile strentgth vs Elongation of crosslinked EVA using some crosslinking coagent. 4) EPDM EPDM is being widely utilized for industrial use based on its excellent properties on heat resistance and weathering. In application field being required severe physical properties, peroxide crosslinking in employed. TAIC preferably contributes to promote crosslinking rate and also to improve its heat resistance, compression set and abrasion resistance. 5) Fluoroelastomer TAIC is necessarily used for crosslinking reaction of Fluoroelastomer.TAIC is employed often for radiation crosslinking coagent for specified application field of high quality insulating material.ALVINCHENYAN..YAHOO.COM |
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