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1、null258s0SVol. 25, No. 8null 2009M8POLYMER MATERIALS SCIENCE AND ENGINEERING Aug . 2009RHCM;!9/刘东雷, 辛null 勇(2v,2330031)K1:根据快速冷热成型( RHCM )对制品结构设计的基本要求,结合普通制品结构设计一般原则, 研究了高光注塑制品的主体结构及其筋a凸起a孔a圆角等类型结构的基本设计技术, 得出了高光注塑制品结构设计需要同时满足壁厚均匀性与结构协调性两个主要准则,并以音箱前面壳和液晶显示器( LCD)电视机前壳为例进行了设计研究, 为高光制品结构设计提供了理论上的指导b1oM
2、:y;!9ms|: T Q 320. 66+ 5null null nullDSM: A null null nullcI|: 1000- 7555( 2009) 08- 0162- 05l: 2008-07-07:81S( 0750056)Y:,1VYs0/#CAD/CAE/ CAM, null E-mail: ld-l yang sina. comnull nully( RHCM) 1, 2;/a/( Steam - assist InjectionT echnology),B/,1L#Fe,7=$F#,V7P4Ab7, RH CMvM,ay1+,bYM1, RH CM4,haaoaJ,h
3、Ma4: RHCM;!9/d4qsjbYqaj!95M,jbFig.3null Bosses designof conventional partnull nullYj!9!9F: RHCM;!9/5: ( 1)C(5,YM1,(C!9Z,l(; ( 2)x5,LlClM,;!991V?EbID: 1 null ONO SANGYO Co. , Ltd. http: / / ww w . onosg. co. jp/ technology/technology- f. html. 2 null BRU IJS W. Cut part costs thermodynam ically EB/ O
4、L . InjectionM olding M agazin e, 2007, ( 8) : 52 2007-09-19 . http: / / w w w .injectionmoldingmagazine-digital. com /immnet/ 200708/ pg= 52. 3 null CAI L B. S imulation on rapid heating cycling molding system ofinjection mould based on 3D T IM ON EB/ OL . 2006-06-27 .http: / / w w w . hyperinfo. c
5、om. tw / epaper/ 950627/ 950627. htm . 4 null.!9 M .:, 2002.StructureDesign Techniqueof High-Gloss SurfacePlastic Parts Processedby Rapid Heat CycleMolding TechnologyLIU Dong-lei, XIN Yong( Dep ar tment of M echanical and Electr ical Engineer ing , Nanchang Univer sity , Nanchang 330031 , China)ABST
6、RACT: According to the essential requirements of structure design w ith hig h-gloss surface plastic partsmanufactured by rapid heat cycle molding ( RH CM ) technology, the design technique of structure of high-glosssurface parts including main structure, ribs, bosses, holes, fillets etc has been dis
7、cussed based on conventional designrules. T he research finds that tw o primary rules, uniformity of w al-l thickness and correspondence of structure, shallbe obeyed during the w hole course of design phase. Tw o cases, front panel of sound box and front shell of liquidcrystal display ( LCD) televis
8、ion, have been employ ed as samples to verify these as w ell. The rule w ill give a guide onstructure design of high-g loss surface plastic parts.Keywords:rapid heat cycling molding; high-gloss surface plastic parts; structure design(161:bcontinued from p. 161)Structure Adhesive of TDE-85/E-51 Epoxy
9、Resin Modified by PolyurethaneLI Zh-i hua1, 2, LIU Jian-ti1, 2, CH OU J-i neng1, 2, ZHENG Z-i qiao1, 2( 1 . K ey L aboratory of Nonf errous M etal Materials Science and Engineer ing of Ministry of Education;2 . School of M ater ials Science and Engineering, Central South University , Changsha 410083
10、 , China)ABSTRACT:With polyurethane( PU) modification of the blend of pheno-l based epox y propane ( E-51) and diglycidy-l4, 5-epoxycyclohex ane-1, 2-dicarbox ylate ( TDE-85) , the high perform ance TDE-85/ E-51 epoxy resin structureadhesive w as prepared w ith the mixed aromatic amine as curing age
11、nt. The influences of raw material ratio on themechanical properties of the adhesive were discussed, and the PU toughen mechanism of the adhesive was alsoinvestigated by scanning electron m icroscope( SEM ) . The results indicate that w hen the TDE-85/ E-51 ratio is 1null1,and the amount of PU and a
12、romatic amine reaches to 19% and 20% respectively, the adhesive obtains the bestmechanical properties, and itnull s most shear strength achieves 25null81 MPa and 12null85 MPa under room tem perature and160 null , and the peel strength of the adhesive is 51null68 N/ cm.Keywords:polyurethane; epoxy resin; structure adhesive; mechanical property166s0S2009Mnull
