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改性氰酸酯的预聚工艺研究

PREPOLYMERIZING PROPERTIES OF MODIFIED CYANATE ESTER

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【Author】 HAN Jian-ping, LIU Jian-chao, ZHANG Wei, WANG Xiao-jie(The 43~(rd) Institute of the Fourth Academy of CASC, Xian 710025, CHina)Abstct: Prepolymerizing properties of bisphenol-A dicyanate(BADCy) modified by novolac epoxy for hot-melt prepreg are studied. Novolac epoxy shows distinct catalytic effect on the curing of BADCy. It is found that appropriately prepolymerized cyanate-epoxy blend can make the blend into adhesive state at room temperature. Thus, the polymerized prepreg is made.Dibutyl tin dilaurate(DBTDL) has high catalic activity in BADCy and blend curing reaction too. A modified resin matrix has been developed used in lower DBTDL,BADCy and novolac epoxy.Test results show that the matrix is suitable for hot melt process.

【机构】航天科技集团四院四十三所；航天科技集团四院四十三所西安710025；西安710025；西安710025；

【摘要】本文研究酚醛环氧改性双酚A氰酸酯,用于制备热熔预浸料。双酚A氰酸酯和酚醛环氧树脂经过适当预聚后在室温下具有一定的粘附性,可制作出具有室温铺敷性的复合材料预浸料。将金属催化剂二月桂酸二丁基锡(DBTDL)加入改性体系,复合材料成型试验结果表明,DBTDL对树脂体系的预聚工艺有明显的改善作用,树脂体系可用于热熔工艺。更多还原

【Abstract】 Prepolymerizing properties of bisphenol-A d icyanate (BADCy) mod ified by novolac epoxy for hot- melt prepreg are stud ied. Novolac epoxy shows d istinct catalytic effect on the curing of BADCy. It is found that ap- propriately prepolymerized cyanate-epoxy blend can make the blend into adhesive state at room temperature. Thus, the polymerized prepreg ismade. D ibutyl tin d ilaurate (DBTDL) has high catalic activity in BADCy and blend cu- ring reaction too. A mod ified resin matrix has been developed used in lower DBTDL, BADCy and novolac epoxy. Test results show that the matrix is suitable for hotmelt process.更多还原

【关键词】酚醛环氧；双酚A二氰酸酯；预聚；预浸；
【Key words】 novolac epoxy； cyanate prepolymerization； prepreg；

【文献出处】玻璃钢/复合材料 ,Fiber Reinforced Plastics/Composite , 编辑部邮箱 ,2005年05期

【分类号】TQ323
【被引频次】13
【下载频次】324

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