聚苯乙烯基发泡木塑复合材料的制备与性能1

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1、万方数据第38卷第lO期2010年10月东北林业大学学报JOURNALOFNORTHEASTFORE姗YUNIVERSn．YV01．38No．100ct．2010聚苯乙烯基发泡木塑复合材料的制备与性能1)刘申王海刚王清文(生物质材料科学与技术教育部重点实验室(东北林业大学)，哈尔滨，150040)摘要采用偶氮二甲酰胺作为发泡荆、木粉和聚苯乙烯树脂为主要原料，通过自由发泡挤出成型法制备聚苯乙烯基发泡木塑复合材料，研究木粉粒径、偶联弃I以及成核荆对复合材料的泡孔形态、泡孔分布、力学性能和表观密度的影响。结果表明：较小

2、粒径(80目

3、性能；表观密度分类号TQ325．2ProcessingandPropertiesoftheFoamedPs／WoodPlasticComposites／LiuShen．WangI-Iaigang。WangQingwen(KeyLaboratoryofBio．basedMaterialScienceandTechnology(NortheastForestryUnive玛ity)。MinistryofEducation，Harbin150040．P．R．ChiHa)／／JournalofNoftheastFores

4、tryUniversity．一2010，38(10)．一67—69Thefoamedpolystyrene(PS)basedwoodplasticcomposites。usingazodicarbonamide(AC)asblowingagentandwoodflourandPS鹊mainmateriMs．werepreparedbyfreefoamingmethod．Thee雎ctsofwoodflourparticlesize．COU．piingagent，andnucleatingagentoncellmo

5、rphology。celldistributionandmechanicalpropertiesofthecompositeswerestudied．Resultsshowedthatwhenthewoodflourpatticlesizewas80-120mesh．thecompositeshadbettercellmoroholo-灯。hishercelldensity，smallercellsizeandmuchmoreuniformcelldistribution，andtheflexuralstreng

6、thandtensilestrengthincreasedby21．9percentand47．0percentcomparedwiththecompositescantaining加一80meshwoodflour，Thel200meshtalcwasapromisingnucleatingagent．whichcouldeffectivelyincreasetheceildensityanddecreasetheapparentdensityofthecomposites．Forthefoamedcompos

7、iteswithmaleieanhydridegraftcopolyraer(PS．g．MAH)，themechanicalpropertieswereimproved．andtheaveragediameterofthecellbecamemuchsmaller。andforthatwiththesi-lanecouplingagent，theaveragediameterofthecellWasbigger。andthemechanicalpropertiesbehavedpoody，buttheappare

8、ntdensityWaslower．KeywordsFoamedwoodplasticcomposites；Polystyrene；cenmorphology；Mechanicalproperties；Apparentdensity木塑复合材料(wrc)是一种新型绿色环保型复合材料，是将木纤维或植物纤维等浸渍其它高分子材料的有机单体或预聚物，经物理和化学方法聚合制成的改性