ASA V300〖电池壳〗ABS surface pretreatment is necessary to pre treat the plastic surface before painting, in order to improve the adhesion of the coating on the surface of the plastic and improve the appearance of the plastic. (1) when annealed plastic ABS is formed, it is easy to form internal stress and easy to crack at the stress concentration after coating. Annealing or surface treatment can be used to eliminate stress. Annealing treatment is to heat the ABS plastic molding parts below the thermal deformation temperature, that is, 60 degrees centigrade, and heat preservation 2H. In order to reduce investment in equipment, the whole surface treatment can be used to improve the surface condition. The formulation and process of the whole surface treatment are listed in Table 1. Table 1 whole surface treatment formula and process parameters / 1 water / 3 temperature / temperature / C room temperature treatment time /mi15 - 20 (2) oil removal ABS plastic parts are often contaminated with oil, hand sweat and demoulding agent, which will make the adhesion of the coating worse, the coating produces cracking, foaming and shedding. Oil removal should be carried out before coating. ABS plastic parts are usually cleaned with gasoline or alcohol and then chemical degreasing. The process formula is listed in Table 2. Table 2 the residual alkaline solution on the surface of the workpiece should be thoroughly cleaned after the process parameters of sodium hydroxide (S/L) sodium 50~70 phosphate (S/L) 20~30 sodium carbonate (S/L) 10~20 surface active agent (S/L) 5~10 temperature / 50~60 treatment time /min10 to 15 chemical oil, and cleaned with pure water ***, drying or drying. (3) electrical and dust removal plastic products are insulators, and the surface resistance is generally around 1013 ohms, which is easy to generate static electricity. After charged, it is easy to adsorb tiny dust in the air and stick to the surface. It is very difficult to remove dust from electrostatic adsorption by general blowing method. High pressure ionized air flow has good effect in addition to electrostatic precipitator.

TPV热塑性三元乙丙动态硫化弹性体/橡胶的主要性能：TPV易于焊接、可重复使用、环保***。TPV热塑性三元乙丙动态硫化弹性体/橡胶的主要特点：1、优异的抗老化性能和良好的耐候、耐热性能；2、优异的抗yong久变形性能；3、优异的抗张强度、高韧性和高回弹性；4、优异的环保性能和可重复使用；5、优异的电绝缘性能；6、硬度范围广泛；7、使用温度范围广泛；8、颜色多样化，有全透明、半透明、浅色系列，着色容易，容易加工成型；9、可与PP、PA、PC‖、ABS、PS、PBT、PET等多种材料共***或挤出成型。TPV 8221-60、TPV 203-50、TPV 281-45MED、TPV 281-55MED、TPV 281-64MED、TPV 281-73MED
TPV thermoplastic three ethylene propylene dynamically vulcanized elastomer / rubber main properties: TPV is easy to weld, reusable, environmentally friendly and non-toxic. TPV thermoplastic three EPR dynamic vulcanized elastomer / rubber main characteristics: 1, excellent anti-aging properties and good weather resistance, heat-resistant performance; 2, excellent resistance to Yong long deformation properties; 3, excellent tensile strength, high toughness and high resilience; 4, excellent environmental protection and reusable; 5, excellent electrical insulation 6, 6, a wide range of hardness; 7, a wide range of use temperature; 8, color diversity, transparent, translucent, light color series, easy coloring, easy to process molding; 9, can be used with PP, PA, PC, ABS, PS, PBT, PET and other materials co injection or extrusion molding. TPV 8221-60, TPV 203-50, TPV 281-45MED, TPV 281-55MED, TPV 281-64MED, TPV 281-73MED

化学改性的常用方法：一种是以被改性的树脂单体为一元，改性单体为另一元，在反应釜内进行接枝共聚并获得新的共聚物；第二种方法是将被改性树脂作为主要原料，通过增加树脂分子中的极性元素对其进行有效的改性。
The common methods of chemical modification are: one is one element of the modified resin monomer, the modified monomer is another, graft copolymerization in the reaction kettle and a new copolymer. The second method is to modify the modified resin as the main raw material by increasing the polar element in the resin molecule.
聚丙烯广泛用于塑料管材的生产，但PP是一种抗老化性能差的材料，为了改善PP的性能，通过化学改性方法发明了PP-B和PP-R树脂。
Polypropylene is widely used in the production of plastic pipes, but PP is a kind of poor anti-aging material. In order to improve the performance of PP, PP-B and PP-R resin h***e been invented by chemical modification.
PP-B树脂是丙烯和乙烯的嵌段共聚物。合成丙烯-乙烯嵌段共聚物要用两个聚合反应釜
PP-B resin is a block copolymer of propylene and ethylene. Two polymerization reactors for the synthesis of propylene ethylene block copolymers

PA66对许多溶剂具有抗溶性，但对酸和其它一些氯化剂的抵抗力较弱。
PA66 is resistant to many solvents, but is less resistant to acids and other chlorinated agents.
工艺条件
process conditi***
干燥处理：如果加工前材料是密封的，那么就没有必要干燥。然而，如果储存容器被打开，那么建议在85℃的热空气中干燥处理。如果湿度大于0.2%，还需要进行105℃，12小时的真空干燥。熔化温度：260~290℃。对玻璃添加剂的产品为275~280℃。熔化温度应避免高于300℃。 模具温度：建议80℃。模具温度将影响结晶度，而结晶度将影响产品的物理特性。对于薄壁塑件，如果使用低于40℃的模具温度，则塑件的结晶度将随着时间而变化，为了保持塑件的几何稳定性，需要进行退火处理。***压力：通常在750~1250bar，取决于材料和产品设计。
Drying: if the material is sealed before processing, there is no need to dry. However, if the storage container is opened, it is recommended to dry at 85 C hot air. If the humidity is greater than 0.2%, the vacuum drying at 105 C and 12 hours is required.  Melting temperature: 260~290 C. The product of glass additive is 275~280 C. The melting temperature should be ***oided above 300 degrees C. Mold temperature: recommended 80 degrees C. The mold temperature will affect the crystallinity, and the crystallinity will affect the physical characteristics of the product. For thin-walled plastic parts, if the mold temperature below 40 degrees is used, the crystallinity of the plastic parts will change with time. In order to maintain the geometric stability of the plastic parts, the annealing process is needed. Injection pressure: usually in 750~1250bar, depending on material and product design.
***速度：高速（对于增强型材料应稍低一些）。 高性能PC‖/ABS A2200合金材料具有高抗冲击、优良的耐候性和亚光效果，可应用于车载音响和DVD系统、汽车仪表板等部件。 电镀级 PC‖/ABS A2200MP具有杰出的电镀效果和良好的耐低温性能，可应用于汽车把手等电镀部件。
Injection speed: high speed (for enhanced material should be slightly lower). High performance PC /ABS A2200 alloy material has high impact resistance, excellent weatherability and sub light effect. It can be used in vehicle audio, DVD system, vehicle dashboard and other components. Electroplated grade PC /ABS A2200MP has excellent electroplating effect and good low temperature resistance. It can be applied to electroplating parts such as car handles.
注意事项：/PC‖塑料成型过程问题
Note: /PC plastics molding process problem
??产生原因 及解决办法
Causes and Soluti***
??1、银丝
1, silver silk
??a、原材料受潮————干燥原料
A, raw materials are dampened - dry raw materials
??b、树脂过热分解————减低成型温度
B, superheated decomposition of resin -- reducing molding temperature
??c、螺杆压缩比小，背压不足————增加背压
C, screw compression ratio is ***all, back pressure is insufficient -- increase back pressure.
??d、模温过低————加热模具
D, low mold temperature -- heating die
??e、排气不良————模具分型面开排气槽
E and poor exhaust -- the exhaust manifold of the mold parting surface