Page 68 - 《橡塑技术与装备》2024年9期

橡塑技术与装备 CHINA RUBBER/PLASTICS TECHNOLOGY AND EQUIPMENT

2. CHN Energy Ningxia Coal Industry Co. LTD. Olefin Branch 1, Yinchuan 750409, Ningxia, China)

Abstract: As a commonly used equipment for plastic extrusion processing, the co-rotating twin-screw
extruder has seen a significant increase in output, torque, and speed driven by the rapid development of the
plastic industry, and its application is becoming increasingly widespread. Improving the production efficiency
of co rotating twin-screw extruders, enhancing product quality, and achieving equipment multifunctionality
are the basic requirements for achieving their high performance, as well as the difficulties in research and
development. Changing the configuration of threaded components is also an important factor. The large
lead single head threaded component of co rotating twin-screw is often applied at the screw head position,
which has auxiliary support and conveying functions. This article studies the effects of changing the rib width
of co rotating twin-screw on the filling degree and pressure distribution of materials, screw force, and screw
mixing ability. The analysis results show that as the width of the screw edge increases, the filling degree of the
screw decreases and the mixing ability improves.
Key words: single head threaded component; spiral edge width; mixing ability; pressure distribution; force
bearing
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重磅发布！帝人碳纤维热塑预浸料及 PC 产品轻量化新应用
Heavy Release! New application of Teijin carbon fiber thermoplastic prepreg and lightweight PC products

7 月 29 日，日本帝人（TEIJIN）宣布，公司 Tenax™TPCL( 一种碳纤维热塑预浸料 ) 及其聚碳酸酯 (PC)
®
Panlite Sheet 产品被 VAIO 用于世界上最轻的便携式显示器 VAIO Vision+™ 的外壳，该产品重约为 325 g，最
薄处约为 3.9 mm。
其中，Tenax™TPCL 中间体，用于 VAIO Vision+™ 外壳夹层的顶层和底层，是一种片状材料，由热塑性树
脂浸渍的编织碳纤维制成。它重量轻，耐热，耐冲击，坚固，符合电气产品阻燃要求。
®
Panlite 板材，由 PC 树脂制成，用于中间层，具有优异的尺寸稳定性，重量轻，抗冲击性好。
减少碳排放和简化制造
®
对比传统外壳使用金属部件组装，需要在制造过程中安装，新型显示器的外壳结构采用 Panlite 薄膜夹在
Tenax™ TPCL 层之间的设计，无需金属部件即可实现组装所需的连接形状和强度。
这种材料解决方案使能够在单次成型步骤中制造复杂的三维形状，有助于减少制造外壳所需的步骤，并减少
二氧化碳排放。
连续碳纤维增强热塑性复合材料（CFRTP）是指以热塑性树脂为基体，连续性纤维为增强材料，经过树脂熔
融浸渍、挤压等工艺形成的轻质、高强度、高刚性、高韧性、可回收的新型热塑性复合材料。
与热固性复合材料相比，CFRTP 具有成型工艺简单且周期短、原材料储存不受限、可回收循环利用等优点，
在航空航天，交通运输，汽车工业，电子电气，运动休闲等领域广泛应用，成为近年来国内外复合材料企业研究
和开发的热点。
日本帝人从 2011 年 9 月开始批量供应碳纤维增强的热塑性预浸料，树脂基体包括 PEEK，PEI 和 PC 等，并
研发了连续纤维增强热塑性复合材料快速成型技术，其应用目标涵盖汽车、航天航空和一般工业领域。
摘编自 “ 慧正资讯 ”
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