查询词典 polyvinyl

Collagen-chitosan-polyvinyl pyrrolidone blend film s were prepared successfully by solution method,and characterized by FT-IR,X-ray diffraction and optical transmittance.

利用溶液共混法成功制备了新型生物膜材料——胶原蛋白—壳聚糖—聚乙烯吡咯烷酮共混膜，通过红外光谱、X-射线衍射和透光率测试表征了共混膜的结构，同时测定了共混膜的力学性能，考察了溶液pH值对共混膜吸水率的影响。

The sheet-like α-Co2 composed of the uniform nanoparticles was successfully prepared using cobalt chloride as the raw material and polyvinyl pyrrolidone as the dispersant by chemical precipitation method.

以氯化钴为原料，聚乙烯吡咯烷酮为分散剂，采用化学沉淀的方法制备出由纳米粒子组成的片状α-Co2。

The results showed that there was a more better effect of filmformation and absorbency to use poly 1788 as an adhesive and polyvinyl pyrrolidone(K:90) as a hydrophilic polymer. The silicon dioxide with particle size 0.3-1 μm as a inorganic pigment had a better absorbency. The polyethylene glycol modified with ethylenediamine had a more better characteristic of dye immobilization, absorbency and definition than the polyethylene glycol modified with diethylenetriamine, of which the polyethylene glycol of molecular weight of 400 modifiedwith ethylenediamine had more best performance.

研究结果表明：采用聚乙烯醇1788作黏合剂、聚乙烯吡咯烷酮(K值为90)作亲水性高分子可得到比较理想的成膜效果和吸墨效果；粒径分布范围在0.3-1 μm的二氧化硅作为无机颜料具有较好的吸墨性能；用乙二胺改性的聚乙二醇比用二乙三胺改性的聚乙二醇具有更好的固墨性、吸墨效果以及清晰度，其中乙二胺改性的分子量为400的聚乙二醇所得到的烷基多胺的效果为最好。

Chitosan and film-forming properties of polyvinyl pyrrolidone dissolved outstanding performance, made of composite membrane, through the composite membrane-embedded and glyoxal cross-linking role of the glassy carbon electrode have a common fixed-horseradish dismutase enzymes and hemoglobin, Fe 63-/4- body as an electronic transmission.

利用壳聚糖成膜性能及聚乙烯吡咯烷酮优异的溶解性能，制成复合膜，通过复合膜包埋和乙二醛交联作用在玻碳电极上共同固定辣根过氧化物酶和血红蛋白，Fe63-/4-作为电子传递体。

TiO2 hollow nanofibers have been successfully synthesized by an electrospinning technique, using Ti(OC4H9)4, polyvinyl pyrrolidone and absolute ethanol as the starting materials.

采用静电纺丝技术，以钛酸丁酯[Ti(OC4H9)4]、聚乙烯吡咯烷酮和无水乙醇为原料，制备了TiO2空心纳米纤维。

In the deep processing of agricultural and food products, there are some key technological problems of system design on the domestic traditional reelable vacuum aluminium coating system, including mass process parameters, bad process duplication, unstable production quality caused by complex operation, and high equipment failure rate. A newly developed reelable vacuum aluminium coating system with 1500 mm-wide thin plastic films was designed with high vacuum technology in order to satisfy the vacuum aluminum coating of more than 1500 mm-wide, such as polyethylene terephthalate, oriented polypropylene, polypropylene cast film, polyvinyl chloride.

为满足农产品及食品深加工中1500 mm幅宽以上的聚脂薄膜、定向聚丙烯薄膜、聚丙烯流涎薄膜、聚乙烯薄膜的真空镀铝，针对国内卷绕蒸发式真空镀膜机设备存在的工艺参数多、工艺重复性差、操作复杂、产品质量不稳定、设备故障率高等问题，采用高真空技术研制了宽幅卷绕蒸发式高真空镀膜机。

The degradation of polyvinyl alcohol by Arthrobacter sp. P-1 and Rhodococcus sp.

对节杆菌P-1和红球菌J-5降解聚乙烯醇的特性进行了比较研究。

Development of speciality resin for heat shrinkable film ;2. The heat sensitivity of polyvinyl chloride heat shrinkable film was described.

阐述了聚氯乙烯热收缩膜的热敏性，并从生产实际的角度详细讨论了PVC热收缩膜热敏性的影响因素以及热敏性与成型收缩率和贮存性能之间的关系。

In this work we exploited both these approaches simultaneously by forming composites with polyvinyl alcohol, zirconium phosphate and cesium salt of silicotungstic acid.

在本研究中我们通过与聚乙烯醇，磷酸锆，和硅钨酸的铈盐形成复合物，同时探索了这两种方法。

The rencent processing technology of low-foamed sheet of rigid polyvinyl chloride is expounded mainly in splinterless processing, mechanical processing, connecting, thermoforming , surface treatment and so on, which may be some help to the application of low-foamed sheet of rigid PVC.

主要从板材的无屑加工、机械加工、连接、热成型、表面处理等几方面对硬质聚氯乙烯低发泡板材在现阶段的加工技术进行了阐述，以期对硬质PVC低发泡板材的应用有所帮助。

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。