应用化学
應用化學
응용화학
CHINESE JOURNAL OF APPLIED CHEMISTRY
2010年
1期
16-20
,共5页
三元共聚物%纳米氮化铝%不饱和聚酯%表面改性
三元共聚物%納米氮化鋁%不飽和聚酯%錶麵改性
삼원공취물%납미담화려%불포화취지%표면개성
tercopolymer%nanosized aluminum nitride(AlN)%unsaturated polyester resin%surface modification
采用自由基溶液聚合法合成了马来酸酐(MAn)-丙烯酸丁酯(BA)-苯乙烯(St)三元共聚物大分子偶联剂,并用其对纳米氮化铝(AlN)粉体进行了表面改性. 通过GPC、FTIR、沉降实验、TGA、接触角以及TEM的分析表明,合成的大分子偶联剂,数均相对分子量在3 000~10 000之间,适于对纳米粉体进行包覆;单体投料摩尔比为1∶ 1∶ 5的MAn-BA-St三元共聚物大分子偶联剂对纳米AlN的改性效果最好,其化学利用率为52.5%,物理利用率为25%;改性后纳米AlN的表面自由能从879 J/m~2降至221 J/m~2,在苯乙烯中分散良好.
採用自由基溶液聚閤法閤成瞭馬來痠酐(MAn)-丙烯痠丁酯(BA)-苯乙烯(St)三元共聚物大分子偶聯劑,併用其對納米氮化鋁(AlN)粉體進行瞭錶麵改性. 通過GPC、FTIR、沉降實驗、TGA、接觸角以及TEM的分析錶明,閤成的大分子偶聯劑,數均相對分子量在3 000~10 000之間,適于對納米粉體進行包覆;單體投料摩爾比為1∶ 1∶ 5的MAn-BA-St三元共聚物大分子偶聯劑對納米AlN的改性效果最好,其化學利用率為52.5%,物理利用率為25%;改性後納米AlN的錶麵自由能從879 J/m~2降至221 J/m~2,在苯乙烯中分散良好.
채용자유기용액취합법합성료마래산항(MAn)-병희산정지(BA)-분을희(St)삼원공취물대분자우련제,병용기대납미담화려(AlN)분체진행료표면개성. 통과GPC、FTIR、침강실험、TGA、접촉각이급TEM적분석표명,합성적대분자우련제,수균상대분자량재3 000~10 000지간,괄우대납미분체진행포복;단체투료마이비위1∶ 1∶ 5적MAn-BA-St삼원공취물대분자우련제대납미AlN적개성효과최호,기화학이용솔위52.5%,물리이용솔위25%;개성후납미AlN적표면자유능종879 J/m~2강지221 J/m~2,재분을희중분산량호.
A new macromolecular coupling agent, maleic anhydride(MAn)-butyl acrylate(BA)-styrene(St) tercopolymer, was synthesized via solution free radical polymerization and used to modify aluminum nitride(AIN). The molecular structure of the terpolymer was confirmed by FTIR, and its average molecular mass was determined by GPC. The structure, surface properties and thermal stability of the modified nano-AlN were systematically investigated by FTIR, contact angle, TGA, TEM and sedimentation experiment. The results show that the stability of solution; the chemistry and physics usage efficiencies of the macromolecular coupling agent were 52.5% and 25% respectively. The surface free energy of the modified nano-AlN decreased from 879 J/m~2 to 221 J/m~2 which has a good dispersibility in styrene.
