尼龙66在汽车行业应用 tpu 11t93 ╩ TPU 11T93(2)
Long term supply of TPE products or poorgloss is too slow, the injection pssure is too low, low mold temperatureincreasing injection pssure, mold temperature, mold cavity or water or oilpollution clean mold surface grinding is poor or too small to modify the moldgate and runner injection volume or raw material containing water extractionandinjection pssure rate, prolong the injection time and drying
The surface of products have rhyoliteinjection pssure is too high or too low, or too fast or too slow to adjustthe injection pssure and the rate of pssure holding time is too short ortoo small gate increase dwell time or change the large gate mold temperatureand gate temperature is too low and improve the mold gate temperature meltingtemperature, pssure or speed up to improve the poor screw speed.
反映我国教育体制的失败。申报范围:耕地质量提升综合技术
还有人的因素更重要