Shanghai Daoqin Plastics Co., Ltd.

         polyamide (PA) (PA)俗称 nylon, binary acid and binary amine or 由氨基 acid polycondensation 而, is separation upper has heavy amine 基团-NHCO- resin 总称. nylon is large general purpose engineering plastics in output/production volume most large, product types most more, applications most 广, comprehensive property can excellent 良 基础 resin.

         nylon as is important engineering plastics, positive in by through material and chemical modified make its high property can 化. currently, very more field/area for material high temperature resistance function 方面提出 new requirements, is this requirements, in development new product high temperature nylon 方面做 a large amount of research.

         high temperature nylon 定义

         high temperature nylon (HTPA) is types heat resistant polyamide (PA), can long in 150℃ ring upper use engineering plastics. in hot, electrical, material and chemical resistance 方面都 has good performance. especially is in high temperature lower still tool has high property and high strength and dimensions degree and stability property.

         high temperature nylon features

        1, high temperature resistance property can. hot temperature degree is 280℃(1.8MPa),连续 use temperature degree is 180℃.

        2, creep property can. HTPA high crystallization property make its in high temperature lower (large 于120℃) still maintain excellent rigid property, tool has aluminum strong/high degree, 钢一样 hardness and 橡胶一样 flexible, property and resistant impact property.

        3, dimensions degree and stability property. HTPA separation structure in separation 子链段含 has ring, separation structure more 规整, short more easy 运动.

        4, chemical resistance. polyamide (PA) type material for more chemical product tool has good resistant property. and its it polyamide (PA) type material 一样, HTPA也不例 outer, especially is in high temperature lower oil resistant and property non good.

        5, wet property. HTPA fiber reinforcement product tool has relatively low wet property, its water absorption is and other amount glass fiber reinforced PA46 product semi. this type of low moisture absorption property can is 客户节省 more more drying use, products dimensional stability more good.

        6, tough property. HTPA excellent impact tough property make its formed is high requirements made as material selection.

        传统 high temperature nylon types type and property 质

        PA46

        PA46 is 由丁二 amine and adipic acid polycondensation formed aliphatic polyamide (PA), ratio 起PA6 and PA66, PA46 每 to long degree upper amine more more, structure more add for 称, this make it crystallization degree can high 达70%, but also it non fast crystallization speed degree.

        PA46 melting point is 295℃, reinforcement PA46 HDT(heat deflection temperature (HDT)) has 160℃, glass fiber (GF) reinforcement rear, its HDT can high 达290℃, long use temperature degree has 163℃.

        PA46 独特 structure its it material method to features can. as is PA46 产权 完 full has 者, DSM company positive will its excellent property can 经 不断 modified 而付诸 industry 化. in ensure its high temperature resistance property can meanwhile, various application ultra- wear resistant, ultra- high rigidity, ultra- high flow property and other already 经不断 by development.

        而 in high temperature resistance 方面, DSM in 2008 year Chinaplas upper launch its full new high property can STAN YL Diablo, it tool has long resistant heat stabilized property, can in 230℃ high temperature lower positive as ultra- 3000h, meanwhile mechanical properties decline to 15%.

        PA6T

        PA6T is semi aromatic nylon in type table/sheet, is hexamethylenediamine and for 苯二甲 acid polycondensation formed. pure PA6T melting point high 达370℃, in this temperature degree lower nylon already 经发生 degradation, method thermoplastic molding, therefore 市面流通 PA6T均 is and other mono copolymer rear reduce melting point copolymer or composite/compounding material.

        PA6T in 脂肪链 基础 upper a large amount of ring, and PA6, PA66 versus ratio, PA6T拥 has more high Tg, low water absorption, dimensional stability and high heat resistant property and other. due to PA6T need other mono 体进行 copolymer reduce melt processing temperature degree, different mono ratio formed is PA6T modified key/critical, therefore can 说, PA6T high temperature resistance modified tool has very large development 空间.

         Shanghai Genius company already formed 功发出 PA6T series high temperature resistance nylon, already 经投入 production.

        PA9T

        PA9T is Japan Kuraray company development, is 以壬二 amine and for 苯二甲 acid polycondensation formed. although is semi property nylon, PA9T in processing front need 象PA6T一样 need through copolymer modified reduce melting point, pure PA9T melting point in 306℃. PA9T high 玻璃化转变 temperature degree (125℃) and high crystallization property, its in high temperature ring lower good tough property.

         meanwhile it also has its it PA材 material method ratio chemical resistant product property can, 仅次于PPS, its water absorption has 0.17%, is has PA当 in most low. PA9T comprehensive property can is heat resistant nylon in comparison good types, production 规模 不断 expand large, its cost will 会接近普通PA cost, therefore PA9T is has very large development force product types.

         most new high temperature nylon

        PA66

        尽 tube/pipe and high temperature nylon versus ratio, PA66 has versus for relatively low Tm and Tg, 似乎限 made it in high temperature field/area use, is France 罗 亚 company is its still can as is high application material. in 2007 year Germany K展 upper, 罗 亚 company launch high temperature ring lower PPA substitute/replace material TECHNYL Heat Performance(HP), this type of PA66 can meet/satisfy automotive machine inner upper rise temperature degree ring lower property can requirements.

        据称, material also in nylon 66 cost water 平维持 nylon 66 processing properties, this technology to PA66材 material in high temperature resistance field/area belt/tape new development, currently has 罗 亚 company 掌握该 technology.

        PA4T

         as is full 球领先 high temperature nylon (PA46) production 商, DSM company has full 球唯一 丁二 amine industrial solution/scheme. amine is PA46 combined formed key/critical raw materials, this technology advantages make DSM company rate R&D 出 以此 as is raw materials PA4T product.

         this type of 21世纪 第1 new polymerization 体, tool has 卓越 空间 stability property, welding property, high melting point, in temperature degree upper rise lower tool has very high hardness and machine strong/high degree, versus ratio DSM company has PA46 product, is PA9T, it 显示出 ultra- low water absorption.

        PA4T comprehensive also excellent property can, will make it in in the future electronics electrical and automotive and other high temperature resistance application areas important 份额. PA4T 发明也 is market small type and electronics product in for property can material more high requirements 体现.

        PA10T

         research 结果显示, pure PA10T tool 319.1℃ high melting point, its excellent heat resistant property make PA10T展现出 潜 in 商业价 value.

        国 inner plastics modified leading enterprise — Kingfa 商业化 this technology, its grade is Vicnyl PA10T product, it tool has excellent heat resistant property, ultra- low water absorption, more good dimensional stability, resistant 无铅焊锡 temperature degree high 达280℃, excellent chemical resistance can and injection molding processing properties.

         but also 据称, PA10T resin has semi Raw Materials 自于蓖麻, belongs to bio-based environmental protection material, comprehensive property can excellent, 显示出 very strong/high market competition force. PA10T product 商业化, 填补 我国 in high temperature nylon new material upper independent R&D 空白, 而金发 company formed is Shanghai Genius company rear, inner 第2 拥 has high temperature resistance nylon industrial technology mono 位.

         other PPA材 material

        PPA(semi aromatic nylon) is aliphatic amine or acid and belt/tape ring acid or amine polycondensation made. remove above PA4T, PA6T, PA9T, PA10T and other material outer, also has PAMXD6, PA12T and other very more PPA product types. this nylon material is chemical structure in tool ring structure, different degree improve/increase heat deflection temperature (HDT). its in DuPont company use for 苯二甲 acid ester (DMT) and amine (DDMD) combined formed PA12T, melting point 达296.6℃, tool has strong/high application value.

         high temperature nylon application

         due to HTPA can provide ultra- 270℃ heat deflection temperature (HDT), therefore it is suitable for automotive, machine 械, electronics / electrical industrial in heat resistant made parts engineering plastics. meanwhile, for/regarding in short high temperature lower must maintain structure property made parts, HTPA也 is selection. commonly used products lower table/sheet: