外文翻译对聚氯乙烯糊树脂及其应用的发展.docx

1、外文翻译对聚氯乙烯糊树脂及其应用的发展On the development of PVC paste resin and its application Paper Keywords: PVC paste resin; production status; preparation methods; Application progress; plasticizer migration; the existing difficulties Abstract: polyvinyl chloride (PVC) paste resin production and Application due t

2、o its numerous advantages, has become a major field of study on the hot spot. Articles from PVC Production Status and Application of depArture, introducing several of its commonly used preparation method and spray-drying technology, the key operation; then a comprehensive analysis of the impact of P

3、VC in the plasticizer migration factors that inhibit the introduction of nano-filler migration of new methods; and finally based on the nations current situation, analyze the issue, the future development direction. VC paste resin molding with inexpensive equipment, processing and mold simple and ch

4、eap, can be made into special shapes, foam easy, the number of products less heat and can be small, the production of many varieties, etc., so Artificial leather, floor leather, toys, wallpaper, automotive interior materials, widely used in hard products with broad market prospects. Therefore, we wi

5、ll study it in the Article the status quo, progress in respect of Applications to give a brief overview. PVC paste resin (PPVC) is a PVC resin in a large class, and suspension resins are high compared to dispersion of powder, pArticle size range is generally 0.1 2.0 m (suspension resin particle size

6、 distribution is generally 20 200 m). PVC paste resin is a law in Germany in 1931, this (IG Farben) plant began to study, and in 1937 achieved industrial production. PVC paste resin is currently the worlds total production capacity of about 2 million t / a. Among them, Western Europe is the largest

7、manufacturer of PVC paste resin, the output of the regions largest Western European countries of PVC paste resin production capacity has reached 70 million to 750 thousand t / a. In developed countries the vast majority of PVC paste resin production enterprises using ethylene France route, and a lar

8、ger scale. From the production point of view, has developed seed emulsion polymerization method, emulsion poly-continuous method, no seed emulsion polymerization, micro-suspension polymerization, seeds, micro-suspension, emulsion micro-mixing method, etc.; PVC paste resin industry in China start in

9、the 50s. Domestic PVC paste resin manufacturers nearly 20, with a total production capacity of about l7.65 million t / a, accounting for a total production capacity of PVC resin, 9.6%. Production process in order to seed emulsion-based, the other also-continuous emulsion, micro-suspension law, the v

10、ast majority of raw material for the calcium carbide route. Although China has introduced foreign seven brands the companys 35 production technology of PVC paste resin, basically encompass the contemporary worlds leading PVC paste resin production methods, but with the worlds advanced level, there a

11、re still some gaps. Their preparation methods are mainly the following: 1. Emulsion Emulsion formulations are mainly VCM, water, water-soluble initiator and emulsifier. Polymerization of the mixing requirements are very strict, triggering role is carried out in aqueous solution, commonly used initia

12、tor is too water-soluble sulfate. Under normal circumstances, the latex emulsion particle size to be smaller than 0.2 m, in order to achieve the purpose of increasing latex particle size was developed seed emulsion polymerization, so that latex particle size was increased to about 1.0 m. In the emul

13、sion polymerization, if there is a high polymer latex has been generated there, the control ratio of materials and conditions, in principle, VCM has been generated only in the latex polymer particles rather than the formation of new particles; it has generated a high polymer latex like seeds, so cal

14、led "seed emulsion polymerization." However, only a reasonable size is not enough, you must have the appropriate particle size distribution, to get good performance of the PVC paste resin. Emulsion polymerization is very important in the emulsifier, the initiator used determines the number

15、 of particle number, and the final latex particle size played a major role. Particularly during seed is generated when the high trigger rate and low concentration of emulsifier production, can narrow size distribution of latex particles. 2. Micro-suspension method Micro-suspension polymerization sys

16、tem was PVC paste resin is a relatively new way, as early as the mid-20th century, 60 have been industrialized. The process is: first part of the VCM (5%) by mechanical homogenization of the method for producing a stable emulsion (particle size of about 1.0 m), and then proceed to aggregate (must us

17、e oil-soluble initiator). Produced by this method the mobility of PVC paste resin excellent emulsifier with less resin thermal stability and water resistance are improved. The production process is required to pay special attention to the following factors: selection of a suitable emulsifier and par

18、ticle conditioner system; polymerization system components homogenization; stirring speed; water and the appropriate ratio of monomers. 3. Mixing method PVC paste resin production process mixing method is mainly set emulsion and micro-suspension polymerization in one, throughout the reaction process

19、 to join through the emulsion after the seeds and other emulsifier, initiator, various auxiliaries and join VCM response. Hybrid method with the C16 and C18 straight-chain alcohols mixed with sodium dodecyl sulfate, or the composition of lauric acid amine emulsifier to form micro-emulsion polymeriza

20、tion carried out mainly in the micro-droplets. After the seed emulsion polymerization by adding a bimodal distribution of the entire particle size. PVC paste resin has been widely used in artificial leather, impregnated gloves, wallpaper, adhesives, automotive sealing material, steel coatings, paint

21、s, footwear and other advanced Applications. It is estimated that in 2000 the worlds total consumption of PVC paste resin market, about 1.66 million t / a. In China, PVC materials, there are two good application results: 1, Plastic drop cotton products. This process made of cotton through the Plasti

22、c drop plastic products in China are new technology products, it is based on a variety of knitted fabric cotton and various blends as raw materials in its surface, drops of white or color PVC small particles, these small particles into the hemispherical surface of the cloth uniformly distributed acc

23、ording to plum-shaped, and plastics into products. This cotton fabric has excellent wear-resistant plastic, non-slip, heat insulation, insulation and perspire all over the performance of gloves made of a more popular trend in todays world, all kinds of knitting, nylon, canvas and work gloves generat

24、ion product. 2, used in the automotive industry. Automotive Plastics has entered a higher intensity, quality, the second generation of lighter materials. The use of PVC paste resin plasticized paste prepared by the slush, rotation molding, dip molding and other processes can be made by hand car seat

25、, instrument panel skin, skin, and so the steering wheel car decoration pieces, which are reproduced in exquisite decorative pieces can be The die surface patterns and configurations, have excellent heat resistance, impact resistance, tear-resistant, but also gives the feel and appearance of a sense

26、 of natural harmony. As the PVC paste resin molding processing and suspension PVC resin processing equipment compared to low-cost, simple and inexpensive molds can be made into special shapes, foam easy, the number of products less heat and can be a small amount of varieties in production, etc., so

27、the current plastics processing industry optimistic about the situation. Chinas rapid development over the past few years, the industrys annual capacity is growing rapidly; but in rapid development, a number of issues must also be emphasis on early and resolve: reposted elsewhere in the paper for fr

28、ee Download Center 1. Market competition pressure. Although the production in China to introduce foreign technology, but the technical level is still backward a certain distance, the domestic production of the same grade to repeat the product quality unstable; coupled by power, the international cru

29、de oil and other energy prices influence the market price volatility. 2. The need to expand the market space. PVC paste resin applications more comfortable, but at present its share of the market share is still a few; the product structure, formality in the homopolymer, copolymer less. A comprehensi

30、ve analysis of PVC paste resin production status at home and abroad, we believe that the future of domestic PVC paste resin imported technology should be based on the ingredients and the process by adjusting the polymerization conditions make the production of GM varieties of grades and achieve high

31、 quality, low consumption of fixed and so on; the same time, for the leather, conveyor belts, decorative body, automotive adhesives, architectural coatings, special gloves, and other proprietary applications to develop some special resins to form the companys own specialty products to meet the needs

32、 of users at home and abroad; various manufacturers in the the existing production base, in whatever circumstances, as much as possible to increase a variety of PVC paste resin production technology devices to meet the different users of PVC paste resin demand, while improving their own products in the market share; continuously increasing application development efforts, broaden the scope of application of PVC paste resin, PVC paste resin to be used to promote the production of PVC paste resin, PVC paste resin of our country to the series production of high-quality, large-scale,