搜索:  
β-crystal formation of isotactic polypropylene under the combined effects of acid-corroded glass fiber and preshear  
β-crystal formation of isotactic polypropylene under the combined effects of acid-corroded glass fiber and preshear
资料类型: PDF文件
关键词: Mancun  Xie  Baobao  Chang  Hongli  Liu  Kun  
Dai  Guoqiang  Zheng(通讯作者)  Chuntai  Liu  Changyu  Shen  
and  Jingbo  Chen  
资料大小: 1272k
所属学科: 高分子工程
来源: 来源网络
简介:
The acid-corroded glass fiber (GF)/isotactic polypropylene (iPP) composite was injection molded by mixing– injection molding (MIM). Through this method, preshear can be imposed on melt during mix–plasticization process. The crystalline structure across the thickness direction of the injection-molded bars was investigated by wide-angle X-ray diffraction and differential scanning calorimetry (DSC). It was unexpectedly found that, in core region, the acid-corroded GF/iPP sample has the highest content of b-form crystals, followed by uncorroded GF/iPP and neat iPP. Additionally, the crystalline morphology was investigated by polarized optical microscopy (POM) and scanning electron microscopy, and the results showed that b-transcrystallization is preferably present in the acid-corroded GF/iPP system. Confirmed by POM and DSC, the acid-corroded GF shows strong b-nucleation ability to iPP under static condition. Combined with the main features of MIM, three b-nucleation origins in the acid-corroded GF/iPP system under injection molding condition are proposed: (1) precursors induced by preshear in the barrel, (2) rownuclei induced by local shear, and (3) the acid-corroded GF nuclei.
上传人: zhengguoqiang
上传时间: 2014-5-5 8:54:23
下载次数: 1
消耗积分: 0  
立即下载:
1人
1人
1人
友情提示:下载后对该资源进行评论,即可奖励2分。
报告错误:  1.下载无效  2. 资料明显无价值  3. 资料重复存在

相关评论 共有0人发表评论 更多评论
你还没有登录,无法发表评论,请首先 登录 注册
免责声明:本站部分资源由网友推荐,来自互联网,版权属于原版权人,如果不慎侵犯到您的权利,敬请告知,我们会在第一时间撤除。本站中各网友的评论只代表其个人观点,不代表本站同意其观点。