Shanghai Daoqin Plastics Co., Ltd.

glass fiber (GF) dispersion, glass fiber (GF) reinforcement nylon main/primary control factors glass fiber (GF) and material nylon 黏结, glass fiber (GF) dimensions and distribution, various additives positive application, process conditions adjustment, screw combined and speed control and other factors effect/influence product property can.

1） glass fiber (GF) generally control in 10~20 micron

2） glass fiber (GF) long degree generally control in 2~3 mm is most good, from upper 讲, glass fiber (GF) long degree long its reinforcement 效果越 good, will belt/tape products surface coarse 糙, and warpage and other issues. glass fiber (GF) long degree and its long degree 无关, and screw combined structure and speed has 关.

3） glass fiber (GF) surface water in melt extrusion process in will make PA generate hydrolysis reaction, 导致PA degradation, from reduce reinforcement PA force property can.

4） coupling agent use amount for impact effect/influence, notched impact strength coupling agent use amount increase increase

5） glass fiber (GF) content in 30%以 inner glass fiber (GF) content increase reinforcement PA6 heat deflection temperature (HDT) improve/increase, ultra- 35%以 rear its heat deflection temperature (HDT) glass fiber (GF) increase 变化不 large.

6） glass fiber (GF) content increase 时, reinforcement PA molding shrinkage decrease small, has reinforcement PA66都 has 同样 规律, generally glass fiber (GF) content to 35%时 its molding shrinkage large is 0.2%.

7） blending temperature degree for reinforcement PA effect/influence extrusion temperature degree low, glass fiber (GF) 包覆效果差, 往往会出现 glass fiber (GF) outer phenomenon, belt/tape strip/profile surface coarse 糙, gloss, pellets hydrophobic 松, property large, product impact strong/high degree 底, extrusion temperature degree high, easy formed PA hot oxidation separation understanding product force property can decline, appearance 变黄, 甚至变 formed color blending extrusion temperature degree selection is control in high material melting point temperature degree scope/range inner, in 实际操 as process in can according to glass fiber (GF) melt flow 状况 确定熔 melt temperature degree, according to extrusion belt/tape strip/profile gloss degree 确定计 amount 段, pressure shrink 段各区 temperature degree

8） screw speed for reinforcement PA property can effect/influence screw speed low 时, screw function small glass fiber (GF) dispersion 不匀, material material can to separation and mixed combined, make reinforcement PA property can 不均, screw speed high 时, its mixed combined function reinforcement, due to screw high speed 转动会 generate very large scratch hot, screw temperature degree high make its material and separation additives generate hot separation understanding, effect/influence product quality, generally low glass fiber (GF) content can degree improve/increase speed, for/regarding flame retardant reinforcement due to flame retardant easy generate hot separation understanding, using/adopting low speed.
 

pa66 plastics raw materials material property PA66/A3EG3/ BASF