Shanghai Daoqin Plastics Co., Ltd.

         polycarbonate (PC) (简称PC) is separation in has carbon acid ester polymer/macromolecule polymer, according to ester structure can separation is aliphatic, aromatic, aliphatic - aromatic and other multiple type type. due to polycarbonate (PC) structure upper property, already formed is large engineering plastics in growth speed degree most fast general purpose engineering plastics.

         processing conditions polycarbonate (PC) comprehensive excellent 良, especially suitable for manufacturing dimensions precision, complex, light negative or relatively less impact negative small type made parts. processing process in, viscosity temperature degree increase reduce, 需严格 control raw materials drying, injection temperature degree, mold temperature degree 三 large conditions.

         raw materials drying

         polycarbonate (PC) most is high temperature lower for micro amount water separation property, add upper melt temperature degree high, melt viscosity large, 常因处理不当而出现 cracking and other quality 事故, therefore injection molding front must 严格, 彻底进行 drying. drying rear plastics water separation content large 于0.02%, micro amount water separation in can make polycarbonate (PC) 发生破 bad property degradation, viscosity decline, 放出二 oxidation carbon and other gas 体, plastics color, property can bad. formed light products easy belt/tape silver streaks, bubbles, 甚至破裂. water separation content high, bad property degradation phenomenon heavy.

         injection temperature degree

         polycarbonate (PC) hot processing features has 两: has relatively high heat stabilized property and very wide molding temperature degree scope/range;由 temperature degree 变化引起 viscosity relatively large, 由剪切 speed rate 变化引起 viscosity relatively small.

        即 polycarbonate (PC) (PC)熔 melt flow property large temperature degree effect/influence, pressure effect/influence function large. therefore 历 都 is injection molding temperature degree adjustment as is 顺利进行 molding and control made parts quality has 效手段.

        但 is, temperature degree low, viscosity large, material 不足, 会导致 made parts surface shrinkage, 起皱纹, gloss, silver streaks 紊乱; temperature degree high or high 于320℃且停留 time long, formed heavy degradation, made parts belt/tape flash, dark color, surface has silver streaks dark strip/profile, and 纹迹, internal has bubbles, physical properties large decline.

         mold temperature degree

         polycarbonate (PC) viscosity high, flow property 差, for function 不敏感, cooling speed degree fast, easy make made parts surface generate defect, formed internal force.

        若 mold temperature low, made parts difficult type 腔, or belt/tape has shrinkage rate large, 波纹, 毛斑, dark strip/profile, and other table/sheet defect, increase made parts 残余.

        若 mold temperature high, made parts cooling slow, molding cycle long, surface gloss 差, also formed mold sticking, make ejection and demolding difficult, made parts 桥区, warpage deformation.

         injection molding pressure

         injection molding pressure for made parts property can effect/influence main/primary performance in holding pressure time upper.

         holding pressure time short, made parts shrinkage, or shrinkage 空洞, true 空泡; add long holding pressure time, especially for large thick made parts, can increase its density, remove true 空洞, improve/increase dimensional stability; holding pressure time long, make made parts generate internal stress, easy cracking.

         application scope

         polycarbonate (PC) application development is toward high composite/compounding, high function, specialized 化, series direction development, already launch light 盘, automotive, office equipment, 箱体, packaging, 医药, lighting, film and other multiple product specialized product grade grade.

         building materials industry

         polycarbonate (PC) sheet/plate tool has good light property, impact resistant property, resistant outer 线辐射 and its products dimensional stability and good molding processing properties, make its ratio construction 业传统 use machine tool has obvious technology property can advantages.

         automotive manufacturing 业

         polycarbonate (PC) tool has good impact resistant, resistant hot property can, but also weather resistance good, hardness high, therefore suitable for production and light type various parts, its application main/primary in in lighting system, table/sheet sheet/plate, add hot sheet/plate, remove device and polycarbonate (PC) alloy made 保险杠 and other.

         medical devices

         due to polycarbonate (PC) products can 经受蒸汽, agent, add hot and large agent amount 辐射消毒, 且不发生变黄 and physical properties decline, by widely used in 人工肾血 liquid equipment and other need in transparent, conditions lower as 并需反复消毒 medical equipment in. production high pressure injection device, outer 科手术面罩, one-time property use tool, liquid separation device and other.

         aviation, aerospace

        随 aviation, aerospace technology speed development, for machine and aerospace device in parts requirements improve/increase, make PC in field/area application day increase. statistics, 仅一架波音 type machine upper use polycarbonate (PC) parts 就达2500, mono machine consumption use polycarbonate (PC) 约2吨. in 宇宙飞船 upper using/adopting different type glass fiber reinforcement polycarbonate (PC) parts and 宇航员 anti use product and other.

         packaging field/area

         in packaging field/area new growth is can heavy 复消毒 and use various Model/Grade water bottle. due to polycarbonate (PC) products tool has quality light, impact resistant and transparent property good, use hot water and property solvent liquid 洗涤处理时不 deformation maintain transparent advantages, field/area PC bottle already full 取代玻璃 bottle.

         electronics electrical appliances

         due to polycarbonate (PC) in relatively wide temperature, wet degree scope/range inner tool has good 而恒定 electrical insulation property, is excellent insulation material. meanwhile, its good flame resistant property and dimensional stability, make its in electronics electrical appliances industry formed vast application areas. polycarbonate (PC) resin main/primary used for production various food processing machine 械, power tools outer housing/shell, machine 体, 支架, cold 冻室抽屉 and true 空吸尘 device parts and other. but also for/regarding parts degree requirements relatively high machine, frequency machine and color color electrical machine in important parts 方面, polycarbonate (PC) material 也显示出 极 high use value.

         optical 透镜

         polycarbonate (PC) its high light transmittance, high rate, high impact resistance property, dimensional stability and easy processing molding and other features, in field/area has its important 位置. using/adopting optical grade poly carbon acid made as optical not only can used for versus machine, micro 镜, 望远镜 and optical testing device and other, also can used for electrical 影投影 machine 透镜, machine 透镜, outer 自动调焦投影仪透镜, light printing machine 透镜, and various 棱镜, more 面反射镜 and other more office equipment and home appliances field/area, its application market is vast. polycarbonate (PC) in optical 透镜方面 另一 important application areas is as is 儿童眼镜, cationic and safety and formed 人眼镜 镜 sheet/slice material. world 眼镜业 polycarbonate (PC) amount year growth rate maintain in 20% above, 显示出极 large market active force.

         light 盘

        随 信息 industry 倔起, optical grade polycarbonate (PC) made formed light as is new generation 音像信息存储介质, positive in fast speed degree development. polycarbonate (PC) its excellent property can features formed is world light manufacturing main/primary raw materials. world light manufacturing consumption polycarbonate (PC) amount already ultra- polycarbonate (PC) overall amount 20%, its year growth speed degree ultra- 10%. polycarbonate (PC) in light manufacturing field/area application outlook/prospects is is vast.