Shanghai Daoqin Plastics Co., Ltd.

         plastics can conductive, need 说普通人不 versus 信, is 科学家 in has several versus 信. can is one-time 偶然事 parts let it formed is 现实, and this as 三位科学家也 has formed is 2000 year degree 谱贝尔 chemical 奖 主. this 三位科学家 is USA 艾伦·黑格教授 and 艾伦·马克 Di 尔米德教授以 and Japan 白川英树教授, is 因1977 year conductive polymer —— poly 乙炔而获奖.

conductive plastics is will resin and conductive material mixed combined, use plastics processing methods processing function type polymer/macromolecule material, main applications electronics, formed electrical packaging, electrical magnetic 波屏蔽 and other field/area.

         conductive plastics classification

        1.按 electrical property can classification, can separation is: insulation 体, anti-static 体, conductive 体, high 导体. usually electrical retardant value in 1010Ω·cm above is insulation 体; electrical retardant value in 104～109Ω·cm scope/range inner as semi or anti-static 体; electrical retardant value in 104Ω·cm below/following is conductive 体; electrical retardant value in 100Ω·cm below/following more low is high 导体.

        2.按 conductive plastics made as methods classification, can separation is structure type conductive plastics and composite/compounding type conductive plastics.

        3.按 applications classification, can separation is: anti-static material, conductive material and electrical magnetic 波屏蔽材 material.

         structure type conductive plastics

        指 high poly material tool has conductive property or chemical modified rear tool has conductive property plastics. it can 发挥自身 chemical structure function, make its essence upper can conductive; again through chemical methods 进行掺杂以 growth its conductive property. (commonly used material is 碘, fluorine 化砷, fluorine and other) usually this category of chemical material is belt/tape has di structure crystallization property high poly material. already made has: poly 乙炔(PAC), poly for 苯捧(PPP), poly 吡咯(PPY), polyphenylene sulfide (PPS) (PPS), poly 噻吩, poly amine, poly and other.

         composite/compounding type conductive plastics

        指经 material modified rear tool has conductive property plastics, less product already 商业化 production. made as type conductive plastics must selection combined basic resin and composite/compounding methods:

        (1) basic resin has positive in use resin can using/adopting. 如PE, PP, WC, PS, ABS以 and TPO and other thermoplastic property plastics and aldehyde resin, resin, ring oxygen resin and other hot solid property plastics.

        (2) composite/compounding methods can separation is lower type:

        a. dispersion composite/compounding method (filling conductive filler)—— in basic resin in add conductive filler make uniform dispersion;

        b.积 composite/compounding method (metal fiber conductive plastics)—— in basic resin in add or metal fiber make 之呈层状 dispersion;

        c. surface method (surface conductive plastics)—— in plastics surface coating metal 层.

         conductive plastics molding

        1, structure type conductive plastics molding

         structure type conductive plastics stability property and processing property currently still is industrial production and application main/primary issues. industrial already made more structure type conductive high poly material very unstable, add hot easy separation understanding. has for oxygen separation 敏感, has in 储存时会失 原 has property can. but also it 们不熔不 solvent, also can very good will it dispersion in has machine solvent agent or viscous property resin in, therefore solid molding methods. is solution this issues, outer already made polymer blending material improvement its stability property and processing property. or made formed can solvent understanding poly 体, make can in solvent liquid in processing formed 胰. or using/adopting copolymer and methods, can processing formed separation. in recent years already research can use thermoplastic property processing methods molding conductive high poly material, from in processing and application breakthrough. material will more more development 出掺杂 front can processing, rear can stability new product types.

        2, composite/compounding type conductive plastics molding

         for composite/compounding type conductive plastics 说, has plastics processing molding methods can using/adopting. extrusion, injection, lamination and other methods processing molding conductive plastics products, its conductive property already full can to use requirements.

        3, filling conductive plastics molding

         this category of conductive plastics is using/adopting dispersion composite/compounding method molding. will conductive filler and basic resin in and machine in mixed combined uniform, rear extrusion pelletizing, again will material use combined methods molding.

        4, metal fiber conductive plastics molding

        a.直接 method in basic resin in add metal short fiber, its process process/workflow and filling conductive plastics same. can in add metal fiber meanwhile add conductive filler. use metal short fiber has what 限定, wire drawing method or method made formed metal fiber and fiber can use.

        b. masterbatch method will long fiber use agent 进行集束, rear will its formed long degree is 5-15ram sheet/slice (masterbatch), again will sheet/slice and basic resin mixed or and, make its uniform dispersion; various metal long fiber can use.理想 纤 long degree >100ram, 直径<5 m(most is 7岬), add amount 4-8, and agent mixed combined 时 占 ratio/proportion 以20-70% is 宜.

         usually use agent is thermoplastic property resin solvent liquid or liquid. 集束切 sheet/slice and basic resin mixed combined selection low speed and 剪切应 force small equipment.

        c.BMC method (预 made overall plastics will metal long fiber formed 网张织 material (体积腭 or filament 毯), rear will its 置于两层 plastics 基材之阉 pressure made molding. can will 织同浸渍 resin solvent liquid molding also can will as is parts mold in injection molding (包括 di injection). BMC method advantages is metal fiber in processing process in loss 伤, conductive property good, use in can maintain conductive property.

        d.SMC method (sheet/slice plastics) will more metal long fiber and basic resin mixed combined, 经 反复滚 pressure and 牵伸, made formed sheet/slice plastics, rear use dry method ”模 pressure molding. SMC method especially suitable for hot solid property plastics.

        添 add metal fiber ratio add conductive filler for basic resin property can effect/influence relatively small, for processing molding property, for equipment tool loss and 污染都 relatively small, effect/influence products color. currently metal fiber conductive plastics electrical retardant rate can to 10Q·cm. electrical magnetic 珲蔽效 high, comprehensive property can good, is, more metal fiber price relatively high, can using/adopting mixed 杂, metal fiber or mixed combined conductive filler reduce cost, its 效果往往 ultra- mono system.

         commonly used conductive filler

        1, carbon 黑

         carbon is use most most commonly used conductive filler. add carbon most product electrical retardant rate can through selection combined 适 填 add amount and processing conditions adjustment. add a small amount of carbon electrical retardant rate has obvious 变化, add amount improve/increase to ratio/proportion rear, electrical retardant rate can decline several amount grade, decline to low rear, again increase add amount, electrical retardant rate 变化就 very obvious.

        2, aluminum sheet/slice

         aluminum sheet/slice its cost low currently used for multiple thermoplastic property plastics, its excellent carbon 黑. commonly used aluminum sheet/slice wide degree 约0.01ram. thick degree 约0.001ram, long degree 3— 12ram, add amount 18—22. aluminum sheet/slice add will reduce products impact strong/high degree easy surface 斑点. requirements appearance quality high products 时, again as surface coating 饰.

        总之, conductive filler add amount, filler product types and 形状, filler dispersion property and products thick degree for conductive property has effect/influence.

         conductive plastics main/primary applications

        1) in electronics, electrical appliances field/area in as formed electrical 路, sheet/slice, device sleeve/set and other precision electronics parts production process in use anti-static turnover box, IC and LCD pallet, IC封装, sheet/slice 载体, film bag and other.

        2) anti product outer housing/shell and structural parts, 如: 煤矿, 油船, 油田, powder and can gas and other combined in use electrical appliances product outer housing/shell and structural parts.

        3) in, high pressure cable in use semi conductive material.

        4) electrical 讯, electrical 脑, 自动化 system, industrial use electronics product, use electronics product, automotive use electronics product and other field/area in electrical appliances product EMI屏蔽 outer housing/shell.

         conductive plastics in other also has more more application, ratio 如, utilizing it for electrical 信号 敏感 property, can use made as device; due to it can absorption micro 波, made formed machine coating material also can to 逃避雷达 隐 type 效果; in 火箭, shipbuilding, pipeline and water pipeline in, also can it anti function.