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| PVC糊树脂对交联PVC泡沫塑料的影响 | |
| 引用本文： | 史爱华,张广成,潘恒太,马忠雷.PVC糊树脂对交联PVC泡沫塑料的影响[J].宇航材料工艺,2011,41(6). |
| 作者姓名： | 史爱华 张广成 潘恒太 马忠雷 |
| 作者单位： | 西北工业大学理学院,西安,710129 |
| 摘 要： | 通过水煮发泡制备交联聚氯乙烯泡沫塑料,讨论了聚氯乙烯(PVC)糊树脂对泡沫制备过程中经制糊、模压和发泡工艺得到的产物的影响,研究了PVC糊树脂对制备的交联PVC泡沫压缩性能的影响.结果表明:制备交联聚氯乙烯泡沫塑料适宜的糊黏度是4～9 Pa·s；PVC糊树脂的K值较大或水萃取液pH值呈碱性可有效防止模压过程中PVC的降解；PVC糊树脂的水萃取液pH值呈碱性可催化发泡反应,有利于得到低密度泡沫且缩短发泡时间；随着其K值增加,制备的泡沫压缩强度增大,但是K值过大时,制备的泡沫泡孔较大,压缩强度反而降低,适宜的K值为70～80. |
| 关 键 词： | PVC糊树脂 K值 水萃取液pH值 粒度分布 |
InfluenceofPVCPasteResinonCross-LinkedPVCFoamPlasti |
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| Shi Aihua,Zhang Guangcheng,Pan Hengtai,Ma Zhonglei.InfluenceofPVCPasteResinonCross-LinkedPVCFoamPlasti[J].Aerospace Materials & Technology,2011,41(6). | |
| Authors: | Shi Aihua Zhang Guangcheng Pan Hengtai Ma Zhonglei |
| Institution: | Shi Aihua Zhang Guangcheng Pan Hengtai Ma Zhonglei(School of Natural and Applied Science,Northwestern Polytechnical University,Xi'an 710129) |
| Abstract: | Cross-linkedPVCfoamplasticwaspreparedbyboilingfoamingmethod.InfluenceofPVC pasteresinonproductsobtainedfrompastingprocess,moldingprocess,foamingprocessandcompression propertyoffoam wasstudied.Theresultsshowthatappropriatepasteviscosityis4to9Pa·s.K-valueof PVCpasteresinislargerorbeingalkalineofPVCpasteresincanpreventPVCdegradationin molding process.BeingalkalineofPVCpasteresincanacceleratefoamingreaction,willbenefittoobtainlowdensity foamandreducefoamingtime.WithK-valueofPVCpasteresinincreasing,compressionpropertyoffoamincreased. WhenK-valueisextremelybig,cellularsizeoffoam becomebiggerandcompressionstrengthreduce, appropriateK-valueis70to80. |
| Keywords: | PVC paste resin K-value pH-value of the aqueous extract Particle size distribution |
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