CAJ | 학술논문

氟橡胶(FKM)具有耐高温、耐化学腐蚀以及摩擦因数和表面能较低等特点,是一种在特殊环境有较高应用价值的密封材料,但其弹性和耐寒性能较差、加工性不良,且价格昂贵.采用三元乙丙橡胶(EPDM)与其并用,可在改善低温和加工性能的同时,降低成本.通过万能材料试验机、阿克隆磨耗仪及老化箱考察硫化体系、FKM/EPDM配比及吸酸剂对硫化胶的耐磨、耐腐蚀、耐油等性能的影响.结果表明:采用双硫化体系能获得性能良好的FKM/EP-DM并用硫化胶;当FKM/EPDM并用胶的配比为3∶1,双酚AF质量分数为2.5%,BPP为0.4%,DCP为1.5%,TAIC为4%时,能充分发挥EPDM的优势,FKM的性能得到改善,同时成本降低;高活性氧化镁(吸酸剂)的加入,减少了在硫化过程中大分子的降解,可提高硫化胶的性能,其较佳用量为1.5%.
불상효(FKM)구유내고온、내화학부식이급마찰인수화표면능교저등특점,시일충재특수배경유교고응용개치적밀봉재료,단기탄성화내한성능교차、가공성불량,차개격앙귀.채용삼원을병상효(EPDM)여기병용,가재개선저온화가공성능적동시,강저성본.통과만능재료시험궤、아극륭마모의급노화상고찰류화체계、FKM/EPDM배비급흡산제대류화효적내마、내부식、내유등성능적영향.결과표명:채용쌍류화체계능획득성능량호적FKM/EP-DM병용류화효;당FKM/EPDM병용효적배비위3∶1,쌍분AF질량분수위2.5%,BPP위0.4%,DCP위1.5%,TAIC위4%시,능충분발휘EPDM적우세,FKM적성능득도개선,동시성본강저;고활성양화미(흡산제)적가입,감소료재류화과정중대분자적강해,가제고류화효적성능,기교가용량위1.5%.
Fluorine rubber is a common sealing material with high practical value in the special environment,and it has excellent properties such as high temperature resistance,chemical corrosion resistance,low friction coefficient and low sur-face energy. But,fluorine rubber also has some defects,such as poor elastic,bad cold-resistant and processing performance, and high price. To improve the low temperature and processing performance,at the same time reduce the cost,the fluorine rubber was modified by blending with ethylene-propylene-diene monomer(EPDM). The influences of vulcanization curing system,acid-acceptor and FKM/EPDM blends ratio on wear resistance,corrosion resistance,oil resistance and other prop-erties of blend vulcanizates were examined by the universal material testing machine,Akron abrasion tester and aging bak-er. The results show that,FKM/EPDM blend vulcanizates with good performance are obtained by using dual curing system;when FKM/EPDM blend ratio is 3∶1,the weight content of bisphenol AF is 2.5%,BPP is 0.4%,DCP is 1.5%,TAIC is 4%,the advantages of EPDM can be given full play,the performances of FKM is improved,at the same time the cost is re-duced;the degradation of macromolecules is reduced by adding some high active magnesium oxide(acid absorbent)during vulcanization,the properties of vulcanizates can be improved,and its optimum using amount is 1.5%.