| 摘要 |
A PVC(polyvinylchloride) duct composition is provided to prevent the generation of volatile organic compounds harmful to the human body, to emit negative ions helpful for the human body and to block the generation of poisonous gas in fire. A PVC(polyvinylchloride) duct composition comprises PVC 100.0 parts by weight, compound stabilizer 5-10 parts by weight, impact modifier 5-10 parts by weight and additive 3-8 parts by weight. The additive comprise shellfish shell powder 60-80 weight%, sericite powder 5-20 weight% and Kiyoseki powder 5-20 weight% based on the total weight of additive. The size of shellfish shell, powder sericite powder and Kiyoseki powder is 1500-2000 mesh.
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