广西大学学报(自然科学版)
廣西大學學報(自然科學版)
엄서대학학보(자연과학판)
JOURNAL OF GUANGXI UNIVERSITY (NATURAL SCIENCE EDITION)
2014年
3期
538-543
,共6页
覃宇奔%胡华宇%张燕娟%覃杏珍%蒋婷%杨梅%黄爱民%黄祖强%罗袁伟
覃宇奔%鬍華宇%張燕娟%覃杏珍%蔣婷%楊梅%黃愛民%黃祖彊%囉袁偉
담우분%호화우%장연연%담행진%장정%양매%황애민%황조강%라원위
马来酸酐%木薯酒糟%PVC%木塑复合材料
馬來痠酐%木藷酒糟%PVC%木塑複閤材料
마래산항%목서주조%PVC%목소복합재료
maleic anhydride%cassava lees%polyvinyl chloride%wood plastic composites
为研究固相共混改性法制备木薯酒糟/PVC木塑复合材料的工艺,探讨马来酸酐同步改性木薯酒糟和PVC的可行性,以木薯酒糟为增强原料,PVC为聚合物基体,马来酸酐为改性剂,密炼机为同步混炼设备,平板硫化机为压板机,采用热压成型技术制备酒糟/PVC木塑复合材料,研究热压成型温度、压力、时间、马来酸酐用量等因素对板材力学性能的影响。结果表明:在酒糟填充量50%、热压成型温度180℃、成型压力6 MPa、成型时间7.5 min、马来酸酐用量1%条件下,所制备酒糟/PVC木塑复合材料的弯曲强度为26.1 MPa,拉伸强度为11.1 MPa,符合复合材料基本力学指标要求。添加钙锌复合热稳定剂能有效提高材料力学性能,当热稳定剂用量0.8%时,材料弯曲强度提高7.7%,拉伸强度提高19.8%。马来酸酐可同步固相改性木薯酒糟和PVC,实现纤维和聚合物基体间的连接,有效提高木塑复合材料的力学性能。
為研究固相共混改性法製備木藷酒糟/PVC木塑複閤材料的工藝,探討馬來痠酐同步改性木藷酒糟和PVC的可行性,以木藷酒糟為增彊原料,PVC為聚閤物基體,馬來痠酐為改性劑,密煉機為同步混煉設備,平闆硫化機為壓闆機,採用熱壓成型技術製備酒糟/PVC木塑複閤材料,研究熱壓成型溫度、壓力、時間、馬來痠酐用量等因素對闆材力學性能的影響。結果錶明:在酒糟填充量50%、熱壓成型溫度180℃、成型壓力6 MPa、成型時間7.5 min、馬來痠酐用量1%條件下,所製備酒糟/PVC木塑複閤材料的彎麯彊度為26.1 MPa,拉伸彊度為11.1 MPa,符閤複閤材料基本力學指標要求。添加鈣鋅複閤熱穩定劑能有效提高材料力學性能,噹熱穩定劑用量0.8%時,材料彎麯彊度提高7.7%,拉伸彊度提高19.8%。馬來痠酐可同步固相改性木藷酒糟和PVC,實現纖維和聚閤物基體間的連接,有效提高木塑複閤材料的力學性能。
위연구고상공혼개성법제비목서주조/PVC목소복합재료적공예,탐토마래산항동보개성목서주조화PVC적가행성,이목서주조위증강원료,PVC위취합물기체,마래산항위개성제,밀련궤위동보혼련설비,평판류화궤위압판궤,채용열압성형기술제비주조/PVC목소복합재료,연구열압성형온도、압력、시간、마래산항용량등인소대판재역학성능적영향。결과표명:재주조전충량50%、열압성형온도180℃、성형압력6 MPa、성형시간7.5 min、마래산항용량1%조건하,소제비주조/PVC목소복합재료적만곡강도위26.1 MPa,랍신강도위11.1 MPa,부합복합재료기본역학지표요구。첨가개자복합열은정제능유효제고재료역학성능,당열은정제용량0.8%시,재료만곡강도제고7.7%,랍신강도제고19.8%。마래산항가동보고상개성목서주조화PVC,실현섬유화취합물기체간적련접,유효제고목소복합재료적역학성능。
This study focused on the preparation of cassava lees/PVC wood plastic composites ( WPC) by solid phase blending modification.Cassava lees/PVC WPC were prepared by hot press molding technology using cassava lees as reinforced material, PVC as polymer matrix, maleic an-hydride as modifier, internal mixer as synchronous mixing equipment, and plate vulcanizing press as plate-pressing machine.The effects of hot press temperature, pressure, time, dosage of maleic an-hydride, etc.on the properties of the composites were investigated, and the feasibility of synchronous modification of cassava lees and PVC by maleic anhydride was also discussed.The results show that under the conditions of cassava lees content 50%, hot press temperature 180 ℃, pressure 6 MPa, time 7.5 min, and the dosage of maleic anhydride of 1%, the bending strength and tensile strength of the cassava lees/PVC composite were 26.1 MPa and 11.1 MPa, respectively, meeting the re-quirements of the basic mechanics indexes of the composites.The addition of calcium zinc compound heat stabilizer could effectively improve the mechanical properties of the composites.With the dosage of heat stabilizer of 0.8%, the bending strength and tensile strength increased by 7.7% and 19.8%, respectively.Our results indicated that cassava lees and PVC could be modified synchronously by maleic anhydride in solid phase process, which improved the adhesion between fiber and polymer matrix and effectively enhanced the mechanical properties of WPC.