Shanghai Daoqin Plastics Co., Ltd.

 随 科学 technology development and 进步, tool has light, high strength, corrosion resistant, easy molding polymer/macromolecule material, 愈 愈广泛 used for 现代交通业. high speed iron is 21世纪 world high speed iron 路 一 important development direction, 国家总理李克 strong/high in 2014 year formed contract signing more high speed iron dry 线, in high speed iron comprehensive speed, design new type iron 路道岔, using/adopting mixed 凝土岔枕, in made plastics insulation sleeve/set tube/pipe, requirements sleeve/set tube/pipe tool has high strength, insulation, strong/high tough property and other property can, in more using/adopting high strength toughened PA manufacturing. 例如 modified glass fiber reinforcement toughened PA6, tensile strength large 于160MPa, flexural strength large 于235MPa, pressure shrink strong/high degree large 于155MPa, impact strong/high degree large 于80Kj/㎡. insulation sleeve/set tube/pipe is high speed iron 路道岔 key/critical parts, it 关系 道岔 production and use, 关系 道岔 use make and machine safety 行驶. PA in iron upper application main/primary has below/following 三方面.

一, PA in iron engineering in application

iron engineering focus/key point is iron 路轨道, its main/primary 联结形式 is 木枕, iron sheet/plate, 钢轨, this type of 联结形式 轨道 elastic property good, decrease property relatively strong/high, and 钢轨联结扣 pressure small, can force 差, meanwhile easy 腐蚀, use make short, in recent years, a large amount of use mixed 凝土轨枕, improve/increase structure strong/high degree and stability property, is development 无缝线路 technology improve/increase conditions, manufacturing mixed 凝土轨枕 and between has insulation 缓冲垫, generally using/adopting 天然橡胶垫 sheet/plate and insulation 缓冲橡胶垫 sheet/slice or plastics （如PVC, PE） insulation 缓冲垫 sheet/slice.

and 轨距挡 sheet/plate 配 sleeve/set use 挡 sheet/plate base/seat use tool has high strength, can 缓冲轨道横 toward force, 保护轨枕承轨槽档肩, has high friction coefficient, wear resistance and corrosion resistant property can, especially is and 轨距挡 sheet/plate 一起, can maintain and adjustment 轨距, main/primary material has PA6 and PA1010, currently in engineering in relatively large products main/primary is 轨距PA挡 sheet/plate base/seat, 橡胶轨枕垫 sheet/plate , 道岔 use nylon base/seat, nylon block, high speed iron 路道岔 nylon sleeve/set tube/pipe and other .

二, PA in iron 路通信信号 engineering in application

iron 路轨道道路 technology using/adopting 自动闭塞 electrical technology, 轨道道路 equipment insulation is 轨道线路 insulation separation, is ensure 轨道信号准确无误, 轨道连接 requirements has good insulation property and relatively high pressure shrink strong/high degree. main/primary product types has type insulation parts, insulation tube/pipe 垫, insulation tube/pipe, insulation gasket, various insulation sheet/plate and insulation. insulation parts using/adopting reinforcement flame retardant nylon.
钢轨 insulation parts reinforcement flame retardant nylon 需 tool has below/following features:

①． insulation property good;

②． mechanical properties good, has relatively good resistant impact property can and resistant fatigue strong/high degree. use lifespan long, repair cycle long;

③． chemical property can stability, corrosion resistant and resistant wet property relatively good;

④． has relatively good resistant high low temperature property can, suitable scope/range 广;

⑤． friction coefficient relatively large, abrasion consumption relatively small;

⑥． molding combined 理, 安装方便, products general purpose property good, property good;

⑦．体积 small, quality light, deformation, processing easy, 便于贮存, cost low;

⑧． waste product can recycling again utilizing;

due to PA type engineering plastics in iron 路通信信号 application, ensure 通信, 信号 舒畅, large large decrease/reduce fault/failure, improve/increase safety.

三, PA in iron machine 车车辆 upper application

in iron upper 行驶 列车, especially is high speed 列车必 must achieve light amount 化, is achieve this target/goal, main/primary is a large amount of using/adopting polymer/macromolecule material, from safety property and function property 考虑, use plastics material in flame retardant upper, also requirements material in 燃烧时发烟 amount small, low property, high ratio strong/high degree, high ratio modulus. high speed 列车流线 type 车头, its outer and inner use resin composite/compounding material, machine 车发动 machine cooling 泵叶轮 and water using/adopting PA66 engineering plastics manufacturing, gas phenomenon, process, achieve light amount 化, reduce cost. machine 车心盘衬垫 is high 承载车辆部 parts, force complex, abrasion consumption large, generally selection high strength heat resistant resistant but also tool lubricated property polymer/macromolecule material, main/primary selection glass fiber (GF) toughened PA66 and 含油MC nylon manufacturing. machine abrasion consumption sheet/plate is use glass fiber reinforcement PA6 manufacturing, iron 路货车 upper use using/adopting PA1010 and MC nylon manufacturing.