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391.聚甲醛/弹性体/纳米碳酸钙复合材料的制备及性能研究
[橡胶和塑料制品业] [2015-08-18]
采用双螺杆熔融共混的方法,以4种不同的混合顺序,制备了聚甲醛/热塑性聚氨酯弹性体/纳米碳酸钙(POM/TPU/nano-CaCO3)复合材料。通过力学性能测试、偏光显微镜、差示扫描量热仪、熔体流动速率仪和扫描电子显微镜,考察了nano-CaCO3的用量对POM/TPU(90/10)复合材料力学性能的影响,并探讨了共混方式对复合材料力学性能及微观结构形态的影响。结果表明,4%的nano-CaCO3与TPU预先混合制成母粒再与POM共混得到的复合材料中POM晶粒发生明显细化,缺口冲击强度高达12.5kJ/m2,冲击性能较为优异。
关键词：聚甲醛；弹性体；纳米碳酸钙；复合材料
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392.聚乳酸扩链改性及其挤出发泡的研究
[橡胶和塑料制品业] [2015-08-18]
采用扩链剂对聚乳酸(PLA)进行扩链改性,研究了扩链剂对PLA流变性能的影响。采用3种不同类型的化学发泡剂:发泡剂A(发泡母粒)、发泡剂B[自制复合发泡剂:偶氮二甲酰胺(AC发泡剂)/碳酸氢钠(NaHCO3)]、发泡剂C(自制改性AC发泡剂),利用单螺杆挤出机对PLA进行挤出发泡。采用扫描电子显微镜观察分析了发泡材料的断面泡孔结构。结果表明,加入扩链剂可有效提高PLA的熔体强度和黏度及降低其熔体流动速率,改善PLA的发泡效果,扩链剂含量为0.8份(质量分数,下同)时,发泡材料的发泡效果最好;实验所用的3种发泡剂中,发泡剂C的发泡效果最好,发泡剂含量为1.5份时,发泡样品的表观密度较小(0.6g/cm3),泡孔直径最小(约为57μm),泡孔密度最大(约为7.69×106个/cm3),泡孔分布均匀,无明显泡孔破裂和连通现象。
关键词：聚乳酸；扩链；化学发泡；挤出；泡孔结构
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393.加拿大客车轮胎市场报告（2015-2019年）
[汽车制造业,橡胶和塑料制品业] [2015-08-18]
In the mid-1800s, rubber tires (also known as solid tires) were most commonly used. With time and new advances, all-solid tires were replaced with pneumatic tires, which were first used in automobiles by the Michelin brothers who went on to become one of the prominent tire vendors in Europe.
关键词：客车；轮胎；橡胶轮胎；气压轮胎；米其林公司
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394.全球软包装市场报告（2015-2019年）
[橡胶和塑料制品业,造纸和纸制品业] [2015-08-15]
Flexible packaging is a non-rigid method of packaging. Packaging products are made of flexible or easy-yielding materials that can easily change shape based on the nature of the product being packaged. Flexible packaging materials include plastic, aluminum, and paper. These materials undergo a detailed conversion process such as printing, lamination, coating, and extrusion to develop different types of flexible packaging products such as plastic bags and pouches, lidding films, foil bags, and sachets.
关键词：软包装；非刚性方法；高产基础；自然材料；塑料；铝；纸
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395.亚太地区直立袋市场报告（2015-2019年）
[橡胶和塑料制品业,交通运输、仓储和邮政业,造纸和纸制品业] [2015-08-15]
Stand-up pouches are widely used in the packaging of food, beverages, fertilizers, pet food, and cosmetics. They have various features such as zipper reclosures, pour spouts, slider closures, release valves, and strong shelf presence. Stand-up pouches have high clarity and excellent barrier properties. The raw materials used in the production of stand-up pouches are LLDPE, PPE, BOPP, and PE.
关键词：立袋；食品；饮料；肥料；宠物食品；包装；LLDPE；PPE；BOPP；PE
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396.亚太地区立式包装袋市场报告（2015-2019年）
[橡胶和塑料制品业,皮革、毛皮、羽毛及其制品和制鞋业] [2015-08-14]
Stand-up pouches are widely used in the packaging of food, beverages, fertilizers, pet food, and cosmetics.
关键词：立式袋；包装袋；亚太地区；食品包装；肥料包装
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397.亚太地区农用薄膜市场报告（2015-2019年）
[橡胶和塑料制品业,农、林、牧、渔业] [2015-08-13]
Agricultural films are advance films that are a component of modern farming technologies used to increase farm productivity. These films are increasingly used in the market in APAC because of the growing population and the scarcity of arable land and food grains.
关键词：亚太地区；农用薄膜；增产；现代农业技术
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398.亚太地区可回收运输包装市场报告（2015-2019年）
[橡胶和塑料制品业,造纸和纸制品业] [2015-08-13]
Returnable transport packaging includes reusable containers, barrels, drums, dunnage, pallets, and racks that enable vendors and industrial customers to transport products and manage shipments efficiently across an organized supply chain.
关键词：亚太地区；可回收；运输包装；滚筒；货盘；货架
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399.全球安全套市场报告（2015-2019年）
[橡胶和塑料制品业] [2015-07-24]
The idea of condoms and their usage is not new. They have been in existence for four centuries. Condoms are widely recommended and used for preventing pregnancy, STDs, and STIs. APAC is one of the fastest growing condom markets due to a need to control the population boom in many countries of the region. Efforts are being made by both commercial companies and governmental bodies for education in safe sex and promotion of the correct usage of condoms. This is the major reason for governmental distribution of free samples of condoms in some countries in Africa as well as in countries such as China, India, and Vietnam.
关键词：避孕套；防止；怀孕；性传播疾病；控制；人口激增
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400.聚乳酸吹膜过程中传热系数的研究
[橡胶和塑料制品业] [2015-06-27]
通过Fluke热像仪采集聚乳酸(PLA)在挤出吹膜过程中的温度场,研究冷却风风量(Q_v)及吹胀比对PLA吹膜过程中对流-辐射联合传热系数(h)的影响,同时对传热系数在低Q_v下和高Q_v下随高度的变化进行了拟合。结果表明,随着Q_v增大,温度下降速率增大;低Q_v下(Q_v=0,0.66 L/s),随着Q_v增大,h变化不明显;高Q_v下(Q_v=1.32、2.00 L/s),随着Q_v增大,在距口模出口高度(Z)为0~0.03 m内h增大明显;随着吹胀比的增大,温度下降速率增大,在口模位置处h增大明显;在不同Q_v下,h可近似表示为高度Z的函数。
关键词：聚乳酸；挤出吹塑薄膜；传热系数；温度场；冷却风量；吹胀比
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