聚乙烯

The influence of polymerization degree and alcoholysis degree of polyvinyl alcohol, the ratio of Span - 20 to Tween - 20, the amount of polyvinyl alcohol, the amount of water - soluble inhibitor, pretreatment and after - treatment processes and et al on the hydrophobic property and stability of the water -repellent is investigated.

研制了一种以聚乙烯醇、2种非离子表面活性剂——Span-20和Tween-20、水溶性缓蚀剂等为原料的水性憎水剂；考察了聚乙烯醇的聚合度和醇解度、2种非离子表面活性剂之间的配比、聚乙烯醇含量、乳化剂含量、水溶性缓蚀剂含量、预处理和后处理工序等因素对憎水剂憎水效果及稳定性的影响。

Polyvinyl alcohol can be used to produce vinylon,polyvinyl butyral, and polyvinyl formal.

聚乙烯醇可用于生产维纶、聚乙烯醇缩丁醛和聚乙烯醇缩甲醛。

On the above mentioned base, the metallized films of polyvinyl formal , polyvinyl butyral and polyethersulphone prepared by reduction were newly developed.

在系统地研究聚乙烯醇和聚丙烯腈/金属盐体系表面金属化的同时，又开发了聚乙烯醇缩甲醛、聚乙烯醇缩丁醛和聚醚砜/金属盐体系，并对这些材料表面金属化的条件和影响因素进行了详细研究。

China,calcium carbide, acetic acid,vinyl acetate,pentaerythrite,polyvinyl butyral resin,polyvinyl butyral film,"AVS"paint for interior and exterior walls,cement,carbonized bricks etc,over 40 chemicals and building materials.

主要有聚乙烯醇系列产品、聚乙酸乙烯酯乳液系列产品、电石、冰醋酸、醋酸乙烯、季戊四醇、聚乙烯醇缩丁醛树脂、聚乙烯醇缩丁醛胶片、AVS内外墙涂料、水泥、碳化砖等40多种化工产品和建材产品。

The company,covering 4.2 square km,has eleven branch and subsidiary companies,and 4,737 employees,it mainly produces polyvinyl alcohol series,polyvinyl acetate emulsion ( commonly called"bairuijiao"in China),calcium carbide, acetic acid,vinyl acetate,pentaerythrite,polyvinyl butyral resin,polyvinyl butyral film,"AVS"paint for interior and exterior walls,cement,carbonized bricks etc,over 40 chemicals and building materials.

主要有聚乙烯醇系列产品，聚乙酸乙烯酯乳液系列产品，电石，冰醋酸，醋酸乙烯，季戊四醇，聚乙烯醇缩丁醛树脂，聚乙烯醇缩丁醛胶片，AVS内外墙涂料，水泥，碳化砖等40多种化工产品和建材产品。

Ultra high strength liquid membrane is made of LDPE and linear polyethylene and to a certain percentage of milky white pellets, after blowing equipment, is now available in the market of milk producing white membrane products include film, black and white film, conserving high barrier film, Business card printing and membership card making ink generally use the polyamic class innovativeink, which of the many types of ink is more affinity with polyethylene, to make the business card printing and membership card must be produced colorfast on liquid membrane of manufacturing processes to strictly control and testing.

超矮强度固体膜是由矮压聚乙烯和线型聚乙烯再配以必定比例的乳白母粒，不纬呼膜摆设创作不收明而不败，不隐阛阓上的奶膜产物有乳白膜、彩色膜、珠平膜、矮阻隔不厚膜等，制卡和会员卡制作油不朱凡是拔取聚酰胺类油不朱，它在成群典范榜样油不朱洋是与聚乙烯较为亲和的一栽，给使制卡和会员卡制作不掉色不离务必差固体膜的各道出产工序增以澈底的把持和检测。

The following was studied in this paper:(1) The adhesive strength of polyvinyl alcohol with different degree of polymerization and different degree of alcoholysis (2) The adhesive strength of polyvinyl acetals with different acetalization degree (3) Effects of polyvinyl acetate on adhesive strength of white glue when PVA or polyvinyl acetals was used as its protective colloid.

本文主要研究以下内容：(1)不同聚合度、醇解度聚乙烯醇溶液粘接强度；(2)不同缩醛度的聚乙烯醇缩醛溶液的粘接强度；(3)聚乙烯醇或聚乙烯醇缩甲醛为保护胶体时，聚醋酸乙烯酯乳液的粘接强度，以及研究白乳胶改性物，制备高粘度和高粘接强度的白乳胶。

Result of thermogravity analysis showed that the thermal stability of polyvinylamine chloride lowers with increasing in amination degree. Moreover, properties of dilute aqueous solutions of three types of poly chloride with different amination degree were compared by use of viscosimetric, conductometric, and potentiometric measurements. Results showed that both the electrostatic interaction of neighboring groups on the chain and the reduced viscosity of poly chloride are increased with increasing the degree of amination of poly . The equivalent conductivity is decreased with the increasing the concentration of poly chloride and increased with the increasing the amination degree of poly .

研究了聚乙烯胺盐酸盐的热稳定性和水溶液性质，发现：随着胺化度的提高，聚乙烯胺盐酸盐的对热稳定性逐步降低；聚乙烯胺盐酸盐是一种典型的聚电解质，其水溶液的pH值随平均分子量的变化并不明显，而随着聚乙烯胺胺化度的升高，pH值降低；随着聚乙烯胺盐酸盐的平均聚合度由82.3增加到201.8，它的m值（用于表征聚电解质侧链基团之间相互作用大小的常数）从5.13升高到5.58，而当聚乙烯胺盐酸盐的平均聚合度增加到311.4时，它的m值反而降低到了5.48；随着胺化度由55.65%升高到82.36%，m值由3.65提高到5.50；随着聚乙烯胺盐酸盐的平均聚合度的提高，聚乙烯胺盐酸盐的平均解离常数由7.48降低到7.26，同时随着胺化度的提高，聚乙烯胺盐酸盐的平均解离常数也由8.33降低到7.37；随着聚乙烯胺盐酸盐浓度的提高，溶液的摩尔电导率逐步降低，随着聚乙烯胺胺化度和聚合度的提高，溶液的摩尔电导率有所升高；在pH值为4左右时，聚乙烯胺盐酸盐的比浓粘度分别达到极值，而与聚合度的大小关系不大；聚乙烯胺盐酸盐的特性粘数明显高于其原料聚丙烯酰胺的特性粘数，分子量对特性粘数的影响十分明显，胺化度对特性粘数的影响并不显著。

Packaging materials: paper/PE, PT/PE, PET/plated AI/PE, PET.PE, BOPP film, tea-leaf filtering paper and other hearable sealed laminates etc.

包装材料：纸/聚乙烯、玻璃纸/聚乙烯、聚脂/镀铝/聚乙烯、聚脂/聚乙烯、BOPP薄膜、茶叶滤纸等可热封的复合包装材料。

Space charge was greatly decreased by blending a small amount of chlorinated polyethylene into LDPE. At the same time, The initiation voltage of short circuit treeing after the positive and the negative dc pre-stress were increased by 26. 8% and 36. 3% respectively.

通过对电老化的纯聚乙烯及含自由基清除剂的聚乙烯的高场强电导的研究，结合空间电荷限制电流理论，计算了老化过程中聚乙烯和含自由基清除剂的聚乙烯试样的陷阱能级密度分布。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。