The existing problems of traditional PVA drying were analyzed, the paddle two-grade drying process for PVA and its applications were presented.
分析了传统聚乙烯醇干燥工艺存在的问题，介绍了聚乙烯醇桨叶两级干燥工艺和应用情况。
Looking for a new sizing material that substitutes PVA has become our common understanding, because PVA causes serious pollution and destruction to environment.
由于PV A对环境造成严重的污染和破坏，寻找一种新的浆料来替代PVA已经成为大家的共识。
The result indicates:the toughness of PVA fiber concrete beams is higher than common concrete in any concrete ages, and increasing with PVA fiber volume ratios increasing.
分析结果表明：无论哪种龄期，PVA纤维混凝土梁的韧性要比普通混凝土梁高，且随纤维含量的增加而增大；
In the process of making PVA water-soluble film, drying method and drying parameter will influence the production efficiency and quality of PVA film in drying system.
在PVA水溶膜的生产过程中，干燥系统中干燥方法的选择和参数的确定直接影响到膜的生产效率和品质。
SEM and FTIR as well as DSC techniques were employed to characterize the morphology and structure of crosslinking of PVA nanofibers membrane, PVA nanofibers membrane as well as PVA powder.
采用扫描电镜法(sem)、红外光谱法(FTIR)、差热扫描法(DSC)对PV A粉末、未交联pva纳米纤维膜以及交联PVA纳米纤维膜的形态和结构进行了研究。
Selecting the suitable PVA product and appropriate method to prepare PVA water solution, and then modifying the solution can keep an optimal applicable effect.
选用适当的品种，用合适的方法制备其水溶液，并对水溶液进行改性，才能达到最佳的使用效果。
The water-solubility of poly (vinyl alcohol) (PVA) films is analyzed from the polymer structure, the blend modification method is put forward to increase the water solubility of PVA films.
从聚合物结构方面分析了聚乙烯醇(pva)薄膜的水溶性，提出用共混改性方法提高PVA薄膜的溶解性能。
The water durability of PVA crosslink membranes were tested in boiling water. The PVA PAN composite membranes were used for separation of water ethanol by pervaporation.
在沸水中测定了PVA交联膜的耐水性，将PVA与聚丙烯腈（PAN）制成PVA-PAN交联复合膜用于渗透汽化法分离乙醇—水混合物。
A novel polyanion electrolyte Phosphate monoester PVA(PMPVA) was synthesized by phosphate monoesterified PVA with phosphoric acid in the presence of urea.
采用磷酸和聚乙烯醇（PVA）在尿素存在下发生单酯化反应，合成了一种新型聚阴离子电解质磷酸单酯PVA（PMPVA）。
It is obtained that, firstly, the PVA hydrogels by extrusion have higher tensile strength than PVA hydrogels by the solution casting method.
结果表明，双螺杆挤出法制备的凝胶拉伸强度高于溶液浇铸法所得样品的拉伸强度。
IR spectra of PVA modified by the modifier show that intense reaction among molecules of the modifier and PVA occurred and stronger complex bonds formed.
经改性剂改性前后的IR分析结果表明，改性剂与pva分子间发生了强烈的相互作用，并形成了较强的分子复合键。
The output of PVA in China accounts for over 30% of the worldwide output, while the packing of domestic PVA products has been in a semi - automatic condition for a long term.
我国的聚乙烯醇(PVA)产量占世界PV A产量的30%以上，而长期以来国内PV A产品的包装却一直处于人工套袋的半自动包装状态。
The modified PVA coating process was studied by the crosslinking reaction of the active amino resin and PVA.
利用具备活性的胺基树脂与聚乙烯醇进行交联反应，对改性聚乙烯醇涂布工艺进行了研究。
Mixed bacteria could degrade poly (vinyl alcohol) (PVA) completely and produce extracellular PVA-degrading enzyme.
混合菌能完全降解pva，并产生胞外pva降解酶。
To reduce the use of PVA in size formula in polyester cotton blended product, and reduce sizing cost, sizing practice of using low alcoholization PVA-217SB and Runli size mixture were done.
为了减少涤棉混纺产品浆料配方中pva的用量，降低上浆成本，应用pva- 217sb低醇解度P VA、润力浆料进行了上浆实践。
Melting temperature of the modified PVA indicated that the melting temperature of PVA with the alcoholysis of 88 % increased with the increasing of the molecular weight.
改性pva塑化温度的研究表明，醇解度为88%的PVA，随相对分子质量的增加塑化温度升高。
Byusing the multi-jet electrospinning setup, PLA and PVA/PEI could be electrospunsimultaneously into uniformly hybrid fibrous membranes of PLA and PVA/PEI.
使用多喷口电纺装置可将PLA与PVA/PEI同时电纺，形成PLA电纺纤维和PVA/PEI电纺纤维均匀混合的无纺膜；
The investigation result showed that PVA distributed widely in Fujian, and the highest disease rate of PVA could reach 80%.
调查结果表明：PVA在福建省广泛分布，发病率最高可达80%以上。
The preparation methods of PVA hydrogel are reviewed and the recent studies on PVA hydrogel application are introduced in detail in this paper.
综述了PVA水凝胶的制备进展，详细介绍了PVA水凝胶的最新应用研究。
The mother liquid from the suspension production of PVC contained a small quantity of solvable polymer, such as PVA. It was difficult to remove PVA by traditional coagulation and filtration method.
悬浮法pvc生产过程中产生的离心母液中含有少量pva等可溶性高分子化合物，采用传统的混凝法和过滤法很难将其有效去除。
Sizing properties of this type of grafted starch are better than acid hydrolysis starch size and mixture size with little PVA size. It is poor than mixed size with large PVA size.
此种接枝淀粉的浆用性能优于酸解淀粉浆料及含少量PVA的混合浆，但仍和含较高量PVA的混合浆料存在差距。
The experimental results show that PVA and EC have a good compatibility in PVA/EC alloy, and the alloy is superior to EC in separation efficiency for non-dissociable polar organic solutes.
实验结果表明，两者之间具有很好的相容性；PVA/EC合金对不离解的极性有机物的分离性能优于EC均质膜材料。
Polyvinyl Alcohol (PVA) is water-soluble polymer, and non-toxic to human body. It has good bio-compatibility, so PVA develops rapidly in medical treatment.
聚乙烯醇是一种高分子有机化合物，对人体无毒、无副作用，具有良好的生物相容性，尤其在医疗中的应用有了很大的进展。
Preferably, a cationic PVA is adhered to a reverse osmosis membrane and then an anionic PVA is adhered thereto.
优选在反渗透膜上附着阳离子性PVA之后，附着阴离子性PVA。
The present situation and progress of the study of PVA in the world, and the main modifying methods were introduced. The practical meaning of developing various of PVA used as film was put forward.
介绍了薄膜用PVA改性的国内、外研究现状、发展趋势，以及PVA改性的主要方法，指出开发各种薄膜用PVA的现实意义。
PVA with low conversion had higher polymerization degree and linear degree as com- pared with PVA with high conversion;
低转化率PVA相对高转化率PVA具有高的聚合度和线性程度，所得纤维力学性能更高。
The surface modification of polypropylene non-woven fabric (NWF) by PVA (polyvinyl alcohol) was researched by dip-coating of PVA to immobilize PVA on the NWF surface.
采用表面涂覆法，将聚乙烯醇(PVA)薄膜固定在聚丙烯无纺布表面，进行表面亲水改性。
The surface modification of polypropylene non-woven fabric (NWF) by PVA (polyvinyl alcohol) was researched by dip-coating of PVA to immobilize PVA on the NWF surface.
采用表面涂覆法，将聚乙烯醇(PVA)薄膜固定在聚丙烯无纺布表面，进行表面亲水改性。
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