CAJ | 학술논문

木塑材料的制备借助于碱化、干燥、混合工艺来完成。在成形机上采用SLS技术制作该材料的试件并测试其力学性能和分析扫描电镜SEM的形态。试验结果表明：马来酸酐（MAH）未使用时，随着木粉加入量的增加，复合材料的拉伸模量和弯曲模量都逐渐升高。当使用马来酸酐（MAH）相容剂后，随着其加入量的变化，复合材料的拉伸强度、弯曲强度、冲击韧性和弯曲模量均产生变化，且复合材料的上述值在马来酸酐（MAH）的加入比例为1.5％～2.5％的范围内时达到最高。借助扫描电镜SEM对复合材料断面的分析说明，木塑界面处的机械锚合作用由于马来酸酐（MAH）相容剂的存在得到增强，从而提高了木塑材料的力学性能。
목소재료적제비차조우감화、간조、혼합공예래완성。재성형궤상채용SLS기술제작해재료적시건병측시기역학성능화분석소묘전경SEM적형태。시험결과표명：마래산항（MAH）미사용시，수착목분가입량적증가，복합재료적랍신모량화만곡모량도축점승고。당사용마래산항（MAH）상용제후，수착기가입량적변화，복합재료적랍신강도、만곡강도、충격인성화만곡모량균산생변화，차복합재료적상술치재마래산항（MAH）적가입비례위1.5％～2.5％적범위내시체도최고。차조소묘전경SEM대복합재료단면적분석설명，목소계면처적궤계묘합작용유우마래산항（MAH）상용제적존재득도증강，종이제고료목소재료적역학성능。
Materials for polypropylene/wood-powder composite are prepared in the way of alkalization , drying and mixing .Test pieces or specimens are made in the shaper with selective laser sintering before their mechanical properties are to be tested or measured and an analysis made of them with scanning electron microscope (SEM) .The experimental findings show that before the use of MAH both the tensile strength and flexible strength are lower than those of the pure polypropylene (PP)when wood powder is filled into polypropylene ,whereas both its tensile modulus and flexible modulus gradually rise with the increase in the content of wood powder .When MAH is used as the compatibilizer ,the tensile strength , flexible strength ,impact strength and flexible modulus of the wood-plastic composite with higher wood powder mass fraction of 40% vary with the changes of MAH contents ,and when the contents of MAH fall into the range from 1.5% to 2.5% ,the above values of the composite are normally the highest .SEM photos of the fractured surface of the composite show that the existence of compatibilizer not only strengthens the interaction between wood powder and the base material ,but also influences the mechanical anchorage on the interface of the wood powder and the base material ,which is helpful to the improvement of the mechanical properties of the composite .