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发明公开
CN105907029A 一种聚甲醛复合材料及其在制备金属管道内衬中的应用 无效 - 驳回

一种聚甲醛复合材料及其在制备金属管道内衬中的应用
摘要：
本发明公开了一种聚甲醛复合材料及其在制备金属管道内衬的应用方法，聚甲醛复合材料，以重量百分比计,包括以下组分：共聚甲醛树脂：82.15％?88.57％，聚丙烯：8.21％?8.86％，热塑性聚氨酯：1.77％?8.21％，甲醛捕捉剂：0.16％?0.18％，抗氧剂：0.32％?0.36％，滑剂：0.16％?0.18％，增容剂：0.16％?0.74％；所述聚甲醛复合材料为微米级60?1000μm尺寸的粉末。采用深冷磨粉法将聚甲醛复合材料研磨成微米级粉末，并采用旋转熔融成型加工法，在金属管件内制备一层厚度均匀的聚甲醛内衬层。本发明方法应用于各种金属管件内衬的制造，具有成型快、成本低、操作简便、耐磨损、耐化学品种多、防腐效果好等优点，同时采用粉末状聚甲醛材料可以提高内衬层表面光滑度，避免开裂、气泡等发生，使内衬层质量提高显著。
摘要（英）：

The invention discloses a polyformaldehyde composite material and an application method thereof in the production of metal pipeline inner liners. The polyformaldehyde composite material comprises, by weight, 82.15-88.57% of copolyoxymethylene resin, 8.21-8.86% of polypropylene, 1.77-8.21% of thermoplastic polyurethane, 0.16-0.18% of a formaldehyde capture agent, 0.32-0.36% of an antioxidant, 0.16-0.18% of a lubricant, and 0.16-0.74% of a compatibilizer; and the polyformaldehyde composite material is micrometer powder with the dimension of 60-1000[mu]m. The polyformaldehyde composite material is ground through a cryogenic milling technology to form the micrometer powder, and a rotary fusion molding processing technology is adopted to make a polyformaldehyde inner liner layer with uniform thickness. The method is applied to manufacture various metal pipe fitting inner liners, the polyformaldehyde composite material has the advantages of fast molding, low cost, simple operation, wear resistance, resistance to various chemical kinds, and good anticorrosion effect, and the powdery polyformaldehyde material can be adopted to improve the surface smoothness of the inner liner layer and avoid cracking and bubbles in order to substantially improve the quality of the inner liner layer.

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