英语翻译聚碳酸酯(英文缩写为Pc)是分子链中含有碳酸酯基的高分子聚合物,根据酯基的结构可分为脂肪族、芳香族、脂肪一芳香族等多种类型.其中脂肪族和脂肪一芳香族聚碳酸酯的机械性能

英语翻译聚碳酸酯(英文缩写为Pc)是分子链中含有碳酸酯基的高分子聚合物,根据酯基的结构可分为脂肪族、芳香族、脂肪一芳香族等多种类型.其中脂肪族和脂肪一芳香族聚碳酸酯的机械性能
英语翻译
聚碳酸酯(英文缩写为Pc)是分子链中含有碳酸酯基的高分子聚合物,根据酯基的结构可分为脂肪族、芳香族、脂肪一芳香族等多种类型.其中脂肪族和脂肪一芳香族聚碳酸酯的机械性能较低,从而限制了其在工程塑料方面的应用,目前仅有芳香族聚碳酸酯获得了工业化生产.由于聚碳酸酯结构的特殊性,现已成为五大工程塑料中增长速度最快的通用工程塑料.
1 概况
聚碳酸酯,又称为PC塑料,化学名为2,2 ‘-双(4-羟基苯基)丙烷聚碳酸酯,英文名称Polyearbonate.物料性能：比重：1．18～1．20克／立方厘米,成型收缩率0．5％～0．8％,成型温度230～320~C,干燥条件1 10～120~C 8小时.冲击强度高,尺寸稳定性好,无色透明,着色性好,电绝缘性、耐腐蚀性、耐磨性好,但自润滑性差,有应力开裂倾向,高温易水解,与其它树脂相溶性差.适于制作仪表小零件、绝缘透明件和耐冲击零件等.成型性能：①无定形料,热稳定性好,成型温度范围宽,流动性差.吸湿小,但对水敏感,须经干燥处理.成型收缩率小,易发生熔融开裂和应力集中,故应严格控制成型条件,塑件须经退火处理.②熔融温度高,粘度高.大于200g的塑件,宜用加热式的延伸喷嘴.③冷却速度快,模具浇注系统以粗、短为原则,宜设冷料井,浇口宜取大,模具宜加热.④料温过低会造成缺料,塑件无光泽；料温过高易溢边,塑件起泡.模温低时收缩率、伸长率、抗冲击强度高,抗弯、抗压、抗张强度低；模温超过l20℃时塑件冷却慢,易变形,粘模.可用挤出、注塑、吹塑和真空成型方法进行加工,制造各种板材、制件、容器、管件和薄膜等,其中最常用的是注塑成型法.
2聚碳酸酯的生产现状
聚碳酸酯的生产方法分为界面光气法(界面缩聚法)和酯交换法.迄今占世界90％左右生产能力的装置使用的是界面光气法工艺.但光气有剧毒,界面光气法工艺的副产物对环境也有害.目前,聚碳酸酯的生产高度集中.世界最大的4家聚碳酸酯生产公司是通用电气、拜耳、陶氏化学和日本帝人,其装置能力分别占2003年世界总生产能力的34％ 、31％、9％和8％,4家公司产能占世界总产能的82％.除日本帝人外,亚洲企业生产能力均在6．5万吨以下.我国是聚碳酸酯开发最早的国家之一,早在1958年由沈阳化工研究院首先开发成功酯交换法工艺,并于1965年在大连塑料四厂建成100吨／年的生产装置.到20世纪70年代末期,采用国内技术生产聚碳酸酯的企业先后多达20余家,总生产能力已超过3000吨／年.80年代我国还有8套聚碳酸酯生产装置在生产运营.但是由于工艺技术落后、设备简陋以及原料来源等问题：致使产品质量差,消耗高,迫使多数企业停产.
目前,维持正常生产的企业只有上海申聚化工厂、重庆长风化工厂和常州有机化工厂,总生产能力为5600t／a,但实际产量约lO00t左右,且大部分作为中间体自用.近年中科院成都有机化学研究所承担的碳酸二甲酯与苯酚交换合成碳酸二苯酯的小试项目目前已通过中科院鉴定,技术达到国际先进水平,这标志着我国在开发非光气法生产聚碳酸酯工艺方面迈出了可喜的一步,有望减轻对进口的依赖.据专家介绍,聚碳酸酯和环氧树脂是关联产品,均以双酚A为原料,在环氧树脂领域我国目前既是生产大国又是消费第一大国,而在聚碳酸酯领域我国只是消费大国.由于需求强劲,国内外对我国聚碳酸酯正在全面加强投资,3-5年内也将成为全球聚碳酸酯业的生产大国.

英语翻译聚碳酸酯(英文缩写为Pc)是分子链中含有碳酸酯基的高分子聚合物,根据酯基的结构可分为脂肪族、芳香族、脂肪一芳香族等多种类型.其中脂肪族和脂肪一芳香族聚碳酸酯的机械性能
聚碳酸酯(英文缩写为Pc)是分子链中含有碳酸酯基的高分子聚合物,根据酯基的结构可分为脂肪族、芳香族、脂肪一芳香族等多种类型.其中脂肪族和脂肪一芳香族聚碳酸酯的机械性能较低,从而限制了其在工程塑料方面的应用,目前仅有芳香族聚碳酸酯获得了工业化生产.由于聚碳酸酯结构的特殊性,现已成为五大工程塑料中增长速度最快的通用工程塑料.
The polycarbonate (English abbreviation for Pc) is in the chain molecules containing carbonate based polymer, according to the structure of the ester-and can be divided into aliphatic, aromatic, fat a variety of types such as aromatic. One aliphatic and fat a aromatic polycarbonate the mechanical properties of the lower, limiting its application in engineering plastic, the only won the aromatic polycarbonate industrial production. Due to the special structure of polycarbonate, has now become five engineering plastic in the fastest growing general engineering plastic.
1 概况
1 situation
聚碳酸酯,又称为PC塑料,化学名为2,2 ‘-双(4-羟基苯基)丙烷聚碳酸酯,英文名称Polyearbonate.物料性能：比重：1．18～1．20克／立方厘米,成型收缩率0．5％～0．8％,成型温度230～320~C,干燥条件1 10～120~C 8小时.冲击强度高,尺寸稳定性好,无色透明,着色性好,电绝缘性、耐腐蚀性、耐磨性好,但自润滑性差,有应力开裂倾向,高温易水解,与其它树脂相溶性差.适于制作仪表小零件、绝缘透明件和耐冲击零件等.成型性能：①无定形料,热稳定性好,成型温度范围宽,流动性差.吸湿小,但对水敏感,须经干燥处理.成型收缩率小,易发生熔融开裂和应力集中,故应严格控制成型条件,塑件须经退火处理.②熔融温度高,粘度高.大于200g的塑件,宜用加热式的延伸喷嘴.③冷却速度快,模具浇注系统以粗、短为原则,宜设冷料井,浇口宜取大,模具宜加热.④料温过低会造成缺料,塑件无光泽；料温过高易溢边,塑件起泡.模温低时收缩率、伸长率、抗冲击强度高,抗弯、抗压、抗张强度低；模温超过l20℃时塑件冷却慢,易变形,粘模.可用挤出、注塑、吹塑和真空成型方法进行加工,制造各种板材、制件、容器、管件和薄膜等,其中最常用的是注塑成型法.
Polycarbonate, also known as PC plastics, chemical called 2, 2 'double (4-hydroxyl phenyl) propane polycarbonate, English name Polyearbonate. The material performance: proportion: 1.18 ~ 1.20 g/cubic centimeters, molding shrinkage rate 0.5% ~ 0.8%, molding temperature 230 ~ 320-C, dry conditions 1 10 ~ 120-C 8 hours. Impact strength, high dimension stability, colorless transparent, shading sex good, electrical insulation, corrosion resistance, good abrasion resistance, self-lubricity but poor, have stress cracking tendency, the high temperature easy hydrolysis, and other resin XiangRongXing poor. Suitable for making small parts, and insulation instruments transparent parts and impact resistance parts, etc. Forming performance: (1) amorphous materials, heat stability, molding temperature range wide, poor liquidity. Moisture absorption is small, but for water sensitive subject to dry processing. Molding shrinkage of small, vulnerable to molten craze and stress concentration, reason should be strictly control the forming condition, plastic parts must be approved by annealing processing. (2) the melting temperature is high, high viscosity. More than 200 g of plastic parts, appropriate is used heating type of nozzle extension. (3) the cooling speed, die casting system to thick, short for the principle, should be put cold material well, gate YiQu big, mould appropriate heating. (4) low temperature material can cause lack of material, plastic parts without luster; Material high temperature to the spill, blister plastic parts. Mould temperature low shrinkage and elongation, impact resistant high strength, bending, compressive, tensile strength low; Mould temperature more than l20 ℃ plastic parts when cooling slowly, changeful form, glue a model. Available extrusion and injection molding, blow molding and vacuum forming methods for processing and manufacturing all kinds of plank, stamping, containers, pipe fittings and thin films, one of the most commonly used is ChengXingFa injection.
2聚碳酸酯的生产现状
2 the polycarbonate situation of production
聚碳酸酯的生产方法分为界面光气法(界面缩聚法)和酯交换法.迄今占世界90％左右生产能力的装置使用的是界面光气法工艺.但光气有剧毒,界面光气法工艺的副产物对环境也有害.目前,聚碳酸酯的生产高度集中.世界最大的4家聚碳酸酯生产公司是通用电气、拜耳、陶氏化学和日本帝人,其装置能力分别占2003年世界总生产能力的34％ 、31％、9％和8％,4家公司产能占世界总产能的82％.除日本帝人外,亚洲企业生产能力均在6．5万吨以下.我国是聚碳酸酯开发最早的国家之一,早在1958年由沈阳化工研究院首先开发成功酯交换法工艺,并于1965年在大连塑料四厂建成100吨／年的生产装置.到20世纪70年代末期,采用国内技术生产聚碳酸酯的企业先后多达20余家,总生产能力已超过3000吨／年.80年代我国还有8套聚碳酸酯生产装置在生产运营.但是由于工艺技术落后、设备简陋以及原料来源等问题：致使产品质量差,消耗高,迫使多数企业停产.
The production methods of polycarbonate divided into interface phosgene method (interface polycondensation law) and the ester exchange method. So far around 90% of world production capacity of the devices using the interface is method technology can. But phosgene have virulent, interface phosgene method technology by-products to environment is bad. At present, the production of polycarbonate high concentration. The world's largest four polycarbonate production company is general electric, bayer, dow chemical and Japanese emperor, the device ability in 2003 in the world respectively in the total production ability of 34%, 31%, 9% and 8%, four companies capacity of the world total of 82%. In addition to the Japanese emperor people outside, Asia enterprise production capacity of 65000 tons in the following. China is a country with one of the earliest development of polycarbonate, as early as in 1958 by shenyang chemical research first successful development of the ester exchange method technology, and in 1965 in dalian plastic four plant was established 100 tons/year of production equipment. By the 1970 s, with domestic production technology of the enterprise has as many as 20 polycarbonate, whose total production ability has more than 3000 tons/year. In the 80's and 8 sets of production equipment in the production operation polycarbonate. But because the technology behind and poorly equipped and the sources of the raw materials and problems: the poor product quality, high consumption, forcing most enterprise production.
目前,维持正常生产的企业只有上海申聚化工厂、重庆长风化工厂和常州有机化工厂,总生产能力为5600t／a,但实际产量约lO00t左右,且大部分作为中间体自用.近年中科院成都有机化学研究所承担的碳酸二甲酯与苯酚交换合成碳酸二苯酯的小试项目目前已通过中科院鉴定,技术达到国际先进水平,这标志着我国在开发非光气法生产聚碳酸酯工艺方面迈出了可喜的一步,有望减轻对进口的依赖.据专家介绍,聚碳酸酯和环氧树脂是关联产品,均以双酚A为原料,在环氧树脂领域我国目前既是生产大国又是消费第一大国,而在聚碳酸酯领域我国只是消费大国.由于需求强劲,国内外对我国聚碳酸酯正在全面加强投资,3-5年内也将成为全球聚碳酸酯业的生产大国.
At present, maintain normal production enterprises only Shanghai "JuHua factory, chongqing changfeng chemical plants and changzhou organic chemical plant, total production capacity of 5600 t/a, but the actual production about lO00t or so, and as intermediates for most. In recent years, Chinese academy of sciences institute of organic chemistry of chengdu for dimethyl carbonate and phenol exchange synthesis of diphenyl carbonate was the project currently has identified by the Chinese academy of sciences, technology has reached the international advanced level, this marks in the development of our country can make production process of polycarbonate promising step, is expected to reduce reliance on imports. According to expert introduction, the polycarbonate and epoxy resin are associated products, all with bisphenol A as raw materials, in the epoxy resin field in our country at present is both manufacturing power consumption is the first big country, and in our country is just polycarbonate field consumption power. As a result of strong demand and domestic and foreign to our country the polycarbonate is to strengthen overall investment, 3-5 years will also become a global manufacturing power of polycarbonate industry.