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采用复合改性技术制备卷烟搭口用FHX─1型高速卷烟胶粘剂,该胶具有极佳的流动性能.初粘力高、干燥速度快、粘接强度高、胶质细腻不易起泡、废品率低、不含有害的添加剂,可以满足车速在7000~10000支/min的要求。 相似文献
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采用复合改性技术制备卷烟搭口用FHX-1型高速卷烟胶粘剂,该胶具有极佳的流动性能,初粘力高、干燥速度快、粘接强度高、胶质细腻不易起泡、废品率低、不含有害的添加剂,可以满足车速在7000-10000支/min的要求。 相似文献
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武汉大学化学化工研究所经两年多努力,采用进口原料,试制成功目前尚需进口的高速卷烟胶。以醋酸乙烯为主要单体的该胶系乳液共聚型产品,初粘性能好,快干、粘接强度高、流动性能佳,适于进口卷烟机配套使用(5000支/分以上)。专家估测,国内年烟草加工需要耗接嘴胶,中缝胶(搭口),小盒包装胶及高速卷烟胶总共3万t以上。高速卷烟胶在武汉试制成功@王沛熹 相似文献
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Brittle-ductile transition of PP/POE blends in both impact and high speed tensile tests 总被引:3,自引:0,他引:3
Polypropylene (PP)/octene-ethylene copolymer (POE) blends were studied in both impact and high speed tensile tests, in which the practical strain rate was 208/s. With the increase of the POE content, brittle-ductile transition (BDT) of PP/POE blends occurred in both the impact and high speed tensile tests. BDT also occurred with the decrease of the tensile speed when any of the PP/POE blends was drawn. The impact deformation of the notched impact samples was analyzed in details. Most of the strain loading of the notched impact samples is taken by the deformation of the narrow region near the notch tip in impact tests. The microunits of the deformation region deform in two methods: high speed tensile deformation and shear deformation because of the tensile speed gradients in the deformation region. At the beginning of impact tests, the strain rate at the notch tip reaches almost 6000/s. In rubber toughened plastics, the shear deformation decreases greatly because of the rubber particle cavitation. Thus, the impact deformation is really a high speed tensile deformation at the narrow region near notch tips. The BDTs in both impact and high speed tensile tests share the same mechanism. The notch sensitivity of plastics is essentially the tensile speed sensitivity of plastics. 相似文献
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本文详细研究了新型陶瓷刀具APW(Al2O3/SiCw/SiCp)系列的切削性能.研究结果表明:在加工不锈钢时,APW3的抗磨损能力好于APW1,而JX—1最差;在高速湿切削高温镍基会金Inconel718(GH169)时,APW1的抗磨损能力好于JX-1,而硬质合金刀具YG8(K30)最差;高速切削时必须使用切削液,由于切削温度对工件材料加工硬化和高温镍基合金Inconel718强度屈服拐点的影响而存在一个最佳的切削速度范围。 相似文献
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Jinan Cao 《应用聚合物科学杂志》2006,102(3):3078-3082
An attempt has been made to investigate the feasibility for a novel concept of supercooled spinning to obtain orientation‐induced crystallization at speeds lower than that for the high‐speed spinning technology. This is achieved by setting the nozzle temperature lower than the melting point for PET, making the polymer a supercooled fluidic liquid, and then spinning the supercooled. The experimental results show that high orientation and high crystallinity can be achieved at a spinning speed of 2500 m/min, which is in good comparison with a speed of 5000–6000 m/min to obtain similar degree of orientation and crystallinity in the high‐speed spinning. The properties of the as‐spun fibers obtained by supercooled spinning were analyzed, and a rational theoretical account for the supercooled spinning is explored. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 3078–3082, 2006 相似文献
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介绍了复合材料 钢制齿轮副传动的设计方法和在轻载、超高速试验装置中的实际应用。 相似文献
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本文简要介绍了日立化成高速/高频PCB用基板材料路线图,分析了日立化成最新推出的环境友好的高速/高频PCB用基板材料MCL—LZ-71G的技术特点,从传输损失、树脂体系组成、填料界面控制等方面详细介绍MCL—LZ-71G树脂体系设计,从高频性能、传输损失、耐湿性能、耐热性、可靠性、眼图测试、耐CAF性能、热冲击测试等方面综述了MCL—LZ-71G的性能。 相似文献
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聚酯切片气送过程中切片皮形成的原因是风速高、温度高和有静电。防治方法是确保输送风速小于 5m/s ,静电接地线要与大地导通。 相似文献
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对聚丙烯切片的流变性能进行了测试,预测了细旦高速纺丝适宜的温度范围。在纺丝速度、单丝纤度对细旦丝性能的影响方面得出了一些规律性的结果。应用高速纺丝技术纺制了0.6dtex的微细预取向丝。 相似文献