成型特
1、无定形料,流动性中等,吸湿大,必须充分干燥,表面要求光泽的塑件须长时间预热干燥80-90度,3小时。
2、宜取高料温,高模温,但料温过高易分解(分解温度为>270度)。对精度较高的塑件,模温宜取50-60度,对高光泽.耐热塑件,模温宜取60-80度。
3、如需解决夹水纹,需提高材料的流动性,采取高料温、高模温,或者改变入水位等方法。
4、如成形耐热级或阻燃级材料,生产3-7天后模具表面会残存塑料分解物,导致模具表面发亮,需对模具及时进行清理,同时模具表面需增加排气位置。
5、强度较高,耐冲击能力强。
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详细说明:pernicious dews of the tropics, and simultaneously struck down. The dates and places of their deaths (now before me) would seem to indicate a more scattered and prolonged pursuit: Hugh, on the 16th April 1774, in Tobago, within sight of Trinidad; Alan, so late as 26th May, and so far away as ‘Santt Kittes,’ in the Leeward Islands — both, says the family Bible, ‘of a fiver’(!). The death of Hugh was probably announced by Alan in a letter, to which we may refer the details of the open boat and the dew. Thus, at least, in something like the course