Dissertation > Excellent graduate degree dissertation topics show

Study on Fire-retardant and Anti-electrostatic Polyvinyl Chloride/Wood Floor Composites

Author: ZhangMingLi
Tutor: WangQingWen
School: Northeast Forestry University
Course: Biological materials engineering
Keywords: Flame retardant Antistatic PVC-based wood-plastic Superconductive carbon black Zinc borate
CLC: TB332
Type: Master's thesis
Year: 2010
Downloads: 168
Quote: 0
Read: Download Dissertation

Abstract

PVC-based wood-plastic due to its good processing properties, mechanical properties and price advantage, especially the excellent texture of the wood, the application more and more, in order to further broaden the scope of its application, the papers of its flame retardant antistatic dual anti After the modification, the modified application in anti-static flooring, military ammunition boxes, coal pipe. The main contents are as follows: (1) by adding antistatic agent and superconducting carbon black, two additives with different amounts of PVC / wood flour composite surface resistivity and mechanical properties. The results show that: adding the antistatic agents can not effectively reduce the surface resistivity of the composite material, added to 20 parts of superconductive carbon black can make the surface resistivity of the composite material reached 5.28 × 108Ω/sq use in mines pipe conductive requirements. The SEM pictures you can see, conductive carbon black dispersed in PVC / wood flour composite is very uniform. And the distance between the conductive particles is gradually reduced with the increase in the amount of soot add. (2) cone calorimeter results show that: the carbon black is added to make the composite average heat release rate increases, the total heat release remains unchanged, smoke release rate and total smoke release have lower total smoke release a 28% reduction, and the material char yield increase. (3) were added to 10 parts and 15 parts of zinc borate of PVC / Wood Flour Composites retardant suppression the smoke performance impact: adding zinc borate reduce average composite heat release rate and total heat release smoke release rate and total smoke release a larger reduction, due to the zinc borate change a PVC pyrolysis process of composite char yield increase. Also found to affect little difference between the combustion properties of the composites with different amounts of zinc borate. (4) add 20 parts by rubbing compound in PVC / wood flour composite conductive carbon black, 10 parts of zinc borate, a comprehensive analysis of its flame retardant properties and Mechanics. The results show that: the zinc borate antistatic carbon black / PVC / wood flour composite rate is reduced by 20%, the total thermal heat release material course change, heat release rate curve change significantly, the average heat release release were significantly lower, and played a flame-retardant effect. And smoke release rate and total smoke release lower total smoke release was reduced by 46%, significantly smoke suppression char yield also increased.

Related Dissertations

CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Composite materials > Non-metallic composite materials
© 2012 www.DissertationTopic.Net Mobile