粉末丁腈橡胶改性SMC的研究.pdf

24 1 2009 1 ∃ 42 ∃ Thermosetting Resin V l24 N 1 Jan2009 SMC 李忠恒, 李 军, 宦胜民, 毛坚伟 ( 常州华日新材有限公司, 江苏 常州213022) : ( PNBR) PNBR( PS) SMC , CaCO PNBR 3 PNBRPS SMC : CaCO SMC 3 , , CaCO , 415% ; PNBR SMC 3 , , 52% , 005% ; PNBRPS PNBR, PNBRPS 12 , , SMC : ( SMC) ; ( PNBR) ; ; : TQ3271 : A : 1002- 7432( 2009) 01- 0042- 04 Study on SMC modified by PNBR LI Zh ng- heng, LI Jun, HUAN Sheng- min, MAO Jian- wei ( Changz hou Huari New Material Comp any , Changz hou 213022 , China) Abstract: SMC c mp sitewas m dified by p wdered acryl nitrile- butadiene rubber ( PNBR) r PNBRPSThe effects f glass fibre, CaCO , PNBR and PNBRPS system n the shrinkage, mechanical pr perties and surface quality f SMC 3 were studiedThe results sh wed that shrinkage was decreased by glass fibre and CaCO , but the effect was littleCaCO 3 3 had a p sitive r le in the surface quality and the ptimal mass fracti nwas 415%The shrinkage c uld be decreased sig nificantly and t ughness was als impr ved by adding PNBRThe shrinkage f SMCwith 52% c ntent f PNBR was less than 005% . The anti- shrinkage perf rmance f PNBRPS was better than PNBRZer shrinkage c uld be achieved when the rati f PNBRPS was 12 and the m dified SMC had excellent mechanical pr perties and surface quality Key words: SMC; PNBR; PS ; l w shrinkage 0 ; PS- 954(350%PS ) , ( SMC) 20 60