共查询到19条相似文献,搜索用时 109 毫秒
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目前,国外用于玻璃纤维厚重型织物织造的剑杆织机以西德道尼尔(Dornier)、法国阿尔萨斯(MAV-V)、西班牙依维(IW-ER)、英国温马克(onemack)等几种为主.多采用浸透性好的直接无捻粗纱织造方格布,织机已向宽幅发展,Dornier织机可生产3m宽的织物. 相似文献
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分析了玻璃纤维无捻粗纱布纬纱位移形成的原因,介绍了不同后道工序与纬纱位移的关系,以及产品卷长、幅宽、织物组织对纬纱位移的影响,提出了预防和纠正纬纱位移的措施,从而解决了玻璃纤维无捻粗纱布纬纱位移这一生产难题,提升了玻璃纤维无捻粗纱布产品质量。 相似文献
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随着玻璃纤维应用领域的扩大和品种的不断增加,无捻粗纱需求量已愈来愈多,质量要求也愈来愈高,因此如何提高无捻粗纱的抗拉强度是十分重要的。目前我们生产玻璃纤维无捻粗纱所用的设备,大多是四锭无捻络纱机,用这种设备生产的无捻粗纱存在下列缺点: 相似文献
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1 标准制定的背景和原则 我国现行的玻璃纤维无捻粗纱布标准都是行业标准,共有两个标准:JC/T281-1994《无碱玻璃纤维无捻粗纱布》和JC/T 576—1994《中碱玻璃纤维无捻粗纱布》。这两个标准1989年起…… 相似文献
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介绍了玻璃纤维络纱的生产工序中,张力控制的重要性,张力形成原因,气圈、张力器形式、重量和纱线绕法、丝饼在纱架上摆放位置、络纱工艺布置等主要影响因素以及如何控制各因素使之满足无捻粗纱对张力要求,并结合生产实践,提出一些控制张力的措施。 相似文献
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The processing of composites under pressure is described by a viscoelastic model in which the pressure acts on the fibers in an elastic manner and on the liquid matrix in a viscous manner. Following a micro-mechanics approach, an analytical model has been derived for the nonlinear elastic compression of two-dimensional, orthotropic, plain woven fiber cloths, containing two empirical constants. The model is validated by experimental data and the empirical constants determined in the compression of a wet, plain woven, glass fiber reinforcement. The effects of the compression of woven cloths during processing are demonstrated by the change of their permeability. 相似文献
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深入分析了玻纤织物的结构和织造特性,研究了用剑杆织机织造玻纤织物的工艺特征。通过对玻纤织物纬向移位、剪切困难、布面起皱、退解张力控制困难等现象的研究,提炼织物经纬向的受力特征,寻找解决方法。通过机构创新,解决玻纤机织物的织造难题。 相似文献
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An injection molding process is proposed whereby roving strands are directly incorporated into the polymer melt by using a reciprocating-screw-plasticating unit. The direct incorporation of continuous fibers (DIF) offers the possibility to substitute the relatively expensive and limited pultrusion process currently used to produce long fiber pellets. In this preliminary study experimental investigations on glass fiber-reinforced polyamide-6,6 are carried out, starting with short and long fiber pellets in comparison to the direct incorporation of roving strands into the polymer melt. Some special aspects of the processing of long fiber-reinforced thermoplastics are discussed. The results of fundamental mechanical and physical property investigations are presented, including fiber length distribution, fiber concentration, fiber bundling/clustering and fiber orientation. The influence of fiber diameter and fineness of strands (tex) on the feed-in behavior and the resulting property profile is also discussed. 相似文献