Study on Water Resistance of Polypropylene Based Wood-Plastic Composites Used in Building

Zhang Lin, Quan Xiang, Dongmei Xu
{"title":"Study on Water Resistance of Polypropylene Based Wood-Plastic Composites Used in Building","authors":"Zhang Lin, Quan Xiang, Dongmei Xu","doi":"10.1177/26349833231218017","DOIUrl":null,"url":null,"abstract":"This research was aimed at studying the preparation of polypropylene based wood plastic composite material by twin-screw extrusion. The effects of the addition of the maleic anhydride (MAH) and wood flour on WPC properties were evaluated. WPC with 4, 5, 6, 7, 8, 9, 10 wt% of MAH contents were prepared. The mechanical properties and water resistance of WPC were studied. The result showed that with the increasing of MAH, the tensile strength of WPC increases at first and then decrease, and water absorption reduced by 39%. After immersing in water for 24 h, the tensile strength of WPC decreases but the impact strength increases, and with the increasing of MAH, the reducing extent of tensile strength increases, but the improvement extent of impact strength gradually decreases. When the MAH content exceeds 8 wt%, the impact strength of dried WPC samples (dried for 24 h) can be recovered basically. WPC with 10, 20, 30, 40 wt% of wood flour contents were prepared. The result showed that with the increasing of wood flour, the tensile strength of WPC increases at first and then decreases, the impact strength decreases, and water absorption increased by 62%. When the wood flour content exceeds 10 wt%, the impact strength of dried WPC samples can only recover partially. WPC containing different wood meal sizes was prepared. The result showed that with the decreasing of wood flour particle size, the water absorption of WPC increases obviously. The impact strength of dried WPC samples is higher than that of unsoaked WPC, when the particle size of wood flour is 60 meshes. It can be seen from the SEM photos that the distance between the wood powder fibers becomes larger after 24 h of WPC soaking in water. The finer the wood flour, the easier it is to aggregate in WPC.","PeriodicalId":10608,"journal":{"name":"Composites and Advanced Materials","volume":"231 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composites and Advanced Materials","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1177/26349833231218017","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

This research was aimed at studying the preparation of polypropylene based wood plastic composite material by twin-screw extrusion. The effects of the addition of the maleic anhydride (MAH) and wood flour on WPC properties were evaluated. WPC with 4, 5, 6, 7, 8, 9, 10 wt% of MAH contents were prepared. The mechanical properties and water resistance of WPC were studied. The result showed that with the increasing of MAH, the tensile strength of WPC increases at first and then decrease, and water absorption reduced by 39%. After immersing in water for 24 h, the tensile strength of WPC decreases but the impact strength increases, and with the increasing of MAH, the reducing extent of tensile strength increases, but the improvement extent of impact strength gradually decreases. When the MAH content exceeds 8 wt%, the impact strength of dried WPC samples (dried for 24 h) can be recovered basically. WPC with 10, 20, 30, 40 wt% of wood flour contents were prepared. The result showed that with the increasing of wood flour, the tensile strength of WPC increases at first and then decreases, the impact strength decreases, and water absorption increased by 62%. When the wood flour content exceeds 10 wt%, the impact strength of dried WPC samples can only recover partially. WPC containing different wood meal sizes was prepared. The result showed that with the decreasing of wood flour particle size, the water absorption of WPC increases obviously. The impact strength of dried WPC samples is higher than that of unsoaked WPC, when the particle size of wood flour is 60 meshes. It can be seen from the SEM photos that the distance between the wood powder fibers becomes larger after 24 h of WPC soaking in water. The finer the wood flour, the easier it is to aggregate in WPC.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
建筑用聚丙烯基木塑复合材料的耐水性研究
本研究旨在研究用双螺杆挤出法制备聚丙烯基木塑复合材料。评估了马来酸酐(MAH)和木粉的添加对木塑复合材料性能的影响。制备了马来酸酐含量分别为 4、5、6、7、8、9 和 10 wt%的木塑复合材料。研究了木塑的机械性能和耐水性。结果表明,随着 MAH 含量的增加,木塑板的拉伸强度先增加后降低,吸水性降低了 39%。在水中浸泡 24 小时后,木塑的抗拉强度降低,但冲击强度增加,且随着 MAH 的增加,抗拉强度的降低幅度增大,但冲击强度的提高幅度逐渐减小。当 MAH 含量超过 8 wt%时,干燥后的木塑样品(干燥 24 h)的冲击强度可基本恢复。制备了木粉含量分别为 10、20、30、40 wt% 的木塑。结果表明,随着木粉含量的增加,木塑的拉伸强度先增大后减小,冲击强度减小,吸水率增加了 62%。当木粉含量超过 10 wt%时,干燥的木塑样本的冲击强度只能部分恢复。制备了含有不同大小木粉的木塑。结果表明,随着木粉粒径的减小,木塑吸水率明显增加。当木粉粒径为 60 目时,干燥的木塑样品的冲击强度高于未浸泡的木塑样品。从扫描电镜照片可以看出,木塑在水中浸泡 24 小时后,木粉纤维之间的距离变大。木粉越细,在木塑中越容易聚集。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
自引率
0.00%
发文量
0
期刊最新文献
Performance of blockboard using particle composite bagasse waste as core layer materials Vibration studies of an axially moving epoxy-carbon nanofiber composite beam in thermal environment—Effect of various nanofiber reinforcements Evaluation of fatigue life of fiberglass reinforced polyester composite materials using Weibull analysis methods Performance analysis of similar and dissimilar self-piercing riveted joints in aluminum alloys Characterization of animal shells-derived hydroxyapatite reinforced epoxy bio-composites
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1