The Manufacture of Structured Flax/Hemp Fiber Thermoplastic Composites and Its Flexural Properties

Flax and hemp fibers were used as reinforcing materials to commingle with polypropylene (PP) fiber to realize the mixture of two materials at the stage of yarn.Meanwhile,PP filaments were introduced to produce a corespun yarn with flax/PP as core and PP filament as outer sheath.The commingled yarns were woven into 2D fabric which was used as the prefabricated material.The composite laminates were prepared by hot press technology.The effects of manufacture technology, yam structure,and fiber weight fraction on flexural properties of composites were investigated.     

Research on the Properties of the Naturally Coloured Cottons

IntroductionTextile is among the industries in which harmfulsubstances would arise. The disposal of the drainage afterdyeing and finishing causes environmental pollution. Onthe other hand, questions are frequently raised regardingtextile fibres and their impact on the environment,workplace and their product safety, it is reported thatfabrics made by using synthetic fibres would cause healthhazards to the users[1].Cotton, here means the white cotton,…     

动物生物化学模块化实验教学的探索与实践

将动物生物化学实验内容设置为蛋白质分析技术、酶与代谢部分和核酸分析技术三个综合性实验教学模块，并进行教学实践，重点强化了实验技能和综合能力的训练，调动了学生的学习兴趣，取得了较好的效果。     

不饱和聚酯基玻璃钢的紫外线老化试验

以紫外线灯为光源,对玻璃钢材料进行了紫外线人工加速老化试验,采用扫描电镜(SEM)、差式扫描量热仪(DSC)等对老化前后试样进行表征.结果表明:老化后的试样表面出现不均匀裂纹,拉伸强度呈先上升后明显下降趋势.短期紫外线辐射会引起试样的后固化,造成玻璃化温度(tg)及拉伸强度的上升;而长时间的光老化降解作用会导致大分子链断裂,造成tg和拉伸强度的下降.     

对粉蕉高产培植的技术分析

本文结合作者多年的工作经验对粉蕉培植技术,包括蕉园选择、种植、肥水管理、蕉园管理、病虫害防治和采收包装等方面内容,提出了自己的见解,为粉蕉的高产培植提供技术参考。