Shanghai Daoqin Plastics Co., Ltd.

近期, large 运营商5G基站 large mono 纷纷落, 5G无线主 equipment 集采共涉 and 5G基站52万, 工信部 table/sheet 示, 截至3 month 底, full already formed 5G基站19.8万, expected year construction 50万 5G基站 target/goal can 顺利完 formed. plastics in 5G accelerated in belongs to 自己 5G时代, specialty engineering plastics PEI in 5G application areas in tool advantages.

1. in plastics 金字塔顶端 PEI tool has very high and long resistant thermal properties, heat stabilized property good, 玻璃态转变 temperature degree is 217°C, long use temperature degree can 达170°C; tool has dimensional stability, in very wide temperature degree scope/range inner property thermal expansion coefficient low stability, therefore ring temperature degree for dimensions effect/influence micro, in relatively high temperature degree and has negative 荷 情况 lower use deformation, creep degree low;

2. PEI tool has machine strong/high degree and modulus, electrical property can, in relatively wide temperature degree （-40°C~150°C） and frequency rate scope/range inner still can maintain basic 恒定, tool has stability dielectric constant and consumption dispersion 因数;

3. PEI tool has very good outer light property and relatively high rate;

4. in add additives lower, PEI就 has inner in flame retardant property, low density and low hot property can;

5. PEI also tool has excellent resistant property can and chemical resistant product property, and electroplating can force;

6. for/regarding processing properties 说, PEI tool has low melt viscosity and relatively high flow property, can 以传统 thermoplastic property plastics melt processing process and equipment molding.

PEI excellent dimensional stability, high temperature resistance property, can electroplating property and property can make its in 5G通信 field/area tool advantages.

5G基站 and data in 心布设 amount large increase, a large amount of data 传输需 through light 纤互联, this is light market belt/tape new machine 遇. due to light 通信信号传输 main/primary is in outer 波段, therefore requirements material tool has very high outer 波段透 property, low loss consumption, but also also need very good long dimensional stability and weather resistance.

PEI材 material in light field/area 独领风骚, by widely used in light connectors, light 收发模 block optical parts. PEI材 material tool has very good outer property, in 850nm-1550nm light frequency rate 达88% above, its meanwhile tool high light in temperature degree wet degree in still can maintain 恒定, can long 达2000 small di 85（85℃/85% wet degree ）苛刻 testing; meanwhile PEI材 material tool has long dimensional stability, is 信号传输 provide can optical for 接; PEI tool has high strength, high modulus, used for metal manufacturing light connectors, device and other structure 组建, or 取代玻璃 manufacturing light 收发模 block 透镜, can make parts structure most 佳化, its manufacturing and assembly process, meanwhile maintain dimensions, from make most product cost large reduce.

another, due to PEI材 material tool has high dimensions stability and high strength features, and non good weather resistance, its application in light separation light box/case or anti water connectors field/area, can meet/satisfy IP67 anti water requirements, can significantly improve/increase product long gas property and use can property.

5G基站天线 using/adopting large more more 出（Massive MIMO） technology. 每 基站 using/adopting 2 to 3面天线（AAU）, 每 天线 can tool has 64 to 128 通道. sheet/plate and frequency sheet/plate between and sheet/plate and 腔体滤波 device sheet/plate between using/adopting sheet/plate for sheet/plate connectors 连接. due to 5G天线 for/regarding frequency connectors demand amount large improve/increase, using/adopting hot solid property material （PTFE）并 through CNC processing methods large production already formed is industry made 约.

射 frequency connectors insulation need material provide good electrical property can, low stability dielectric loss, very good force property can, excellent dimensional stability 以便于组装, can large production property can, PEI材 material in above 各 方面均 can meet/satisfy application demand, already formed is frequency connectors insulation material need selection.

无论 for/regarding 传统 三段式 sheet/plate for sheet/plate connectors, also is most new pogo-pin design, PEI材 material can meet/satisfy demand, PEI材 material in wide temperature degree scope/range inner dimensions stability, electrical property can stability, high machine strong/high degree, high melt strong/high degree, resistant temperature and other excellent its it engineering plastics features, is provide more stability product performance, reduce cost.

remove sheet/plate for sheet/plate connectors outer, 馈线接头 use DIN connectors metal outer housing/shell 取代, 传统 射 frequency connectors insulation and outer housing/shell 也广泛 using/adopting PEI材 material.

随 5G天线通道数 large increase, and and RRU整 combined is AAU, has 报道称5G天线 weight will ratio 4G天线 weight increase 30% to 80%. how to is 5G天线 decrease heavy already formed is large 天线厂家 and equipment supply 商关注 话题. metal device plastics again formed is large equipment 厂家关注 焦点.

滤波 device requirements plastics material tool has relatively high heat resistant temperature degree, has 天线厂家提出 meet/satisfy high temperature 回流焊 made demand; meanwhile requirements material tool has and metal versus 匹配 线 property 膨胀系数, temperature degree rise high maintain 恒定; tool has excellent electroplating property can ensure in high low temperature 时腔体 dimensions degree and and surface plating combined strong/high degree, from ensure device in as property can stability. metal rear plastics material, can through ring 境模拟实验 and can property 验证, high low temperature ring testing, wet hot aging testing and other, material deformation, plating 不脱落, mechanical properties maintain stability.

PEI resin material as is high 玻璃化转变 temperature degree 无定形材 material, its tool has and aluminum alloy versus 近 线 property thermal expansion coefficient, temperature degree rise high maintain 恒定, tool has excellent heat resistant property and dimensional stability, long can property, dielectric loss low stability, can electroplating, tool has good metal adhesion property and other features, 显现出 in 腔体滤波 device application upper other plastics material can ratio advantages, is 5G基站天线腔体滤波 device mono achieve decrease heavy can high 达30%; can through injection molding processing process achieve large production, maintain batch dimensions degree, reduce production cost.

鉴于PEI excellent features, PEI材 material in 3G,4G时代 already by widely used in device related parts, 譬如调谐 screw, 飞杆底 base/seat, solid filament and other. 随 5G technology development, product dimensions decrease/reduce, degree and force property can requirements more 严格, PEI application advantages 越 越 significantly.