摘要
介绍以ＰＥ固相接枝马来酸二丁酯（简称ＦＰＥ）非弹性体增韧ＰＶＣ／ＣＰＥ体系。在ＰＶＣ／ＣＰＥ＝１００／５．５及１００／１０（质量比）体系中，加入５．５质量份ＦＰＥ后，其缺口冲击强度由１３．５ｋＪ／ｍ２、３１．５ｋＪ／ｍ２提高到１８．１ｋＪ／ｍ２、４０．８ｋＪ／ｍ２；拉伸强度由４９．４ＭＰａ、４１．７ＭＰａ提高到５２．９ＭＰａ、４２．７ＭＰａ，表明ＦＰＥ对ＰＶＣ／ＣＰＥ体系具有增韧增强双重作用。在ＰＶＣ／ＣＰＥ／ＦＰＥ三元体系中，加入适量的ＣａＣＯ３＊也有增韧作用，添加５质量份时，体系的缺口冲击强度由１８．１ｋＪ／ｍ２提高到２４．１ｋＪ／ｍ２。通过流变性能的测试表明，ＦＰＥ的加入能改善体系的流动性能。此外，还用ＳＥＭ研究了体系的增韧机理，认为在ＰＶＣ／ＣＰＥ／ＦＰＥ体系中，ＣＰＥ属弹性体增韧类型，ＦＰＥ属非弹性体增韧类型，两种机理同时存在。
Toughening of PVC/CPE system by PE solid phase grafted dibutylmaleat (FPE)and non elastomer was studied When 5.5 phr FPE was added to PVC/CPE (10/5.5,100/10) systems,σ I (notched)of PVC/CPE/FPE (100/5.5/5.5,100/10/5.5)increased from 13.5 and 31.5kJ/m 2 to 18.1 and 40.8 kJ/m 2 respectively,σt increased from 49.4 and 41.7MPa to 52.9 and 42.9MPa respectively.The results showed that FPE had both toughening and strengthening effects on PVC/CPE system.When CaCO 3 content was 5 parts,it also had toughening effect to PVC/CPE/FPE(100/5.5/5.5) system.The tests of rheological property indicated that FPE could improve the flow property of the system.In addition,the toughening mechanism of the system was studied by means of SEM and it was found CPE was of elastomer toughening and FPE of non elsatomer toughening,and the two toughenings both had effects on the system.
出处
《塑料工业》
CAS
CSCD
北大核心
1998年第1期93-96,共4页
China Plastics Industry
