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发明公开
CN103554859A 一种可生物降解无纺布专用切片料及其制备方法 失效 - 权利终止

一种可生物降解无纺布专用切片料及其制备方法
摘要：
本发明提供了一种可生物降解无纺布专用切片料及其制备方法。所述方法包括：以聚乳酸和聚(2-乙基-2-噁唑啉)为原料，在50℃至70℃条件下干燥6～12h后，在混炼设备中进行熔融共混，得到所述可生物降解无纺布专用切片料；其中，以聚乳酸100重量份为准，聚(2-乙基-2-噁唑啉)为0.5～10重量份，所述聚(2-乙基-2-噁唑啉)的玻璃化转变温度Tg为58.6℃，所述聚(2-乙基-2-噁唑啉)的热分解温度为365～380℃，所述聚(2-乙基-2-噁唑啉)的数均分子量为50000或200000，共混时的温度为180℃，共混的时间为3～8min，共混时所述混炼设备的转速为30～100rad/min。
摘要（英）：

The invention provides a slice material special for a biodegradable non-woven fabric and a preparation method thereof. The preparation method comprises the following steps: drying under the condition of 50-70 DEG C for 6-12 hours by taking polylactic acid and poly(2-ethyl-2-oxazoline) as raw materials; then carrying out melt blending in mixing equipment to obtain the slice material special for the biodegradable non-woven fabric, wherein the poly(2-ethyl-2-oxazoline) is 0.5-10 parts by weight in terms of 100 parts by weight of the polylactic acid, the glass-transition temperature Tg of the poly(2-ethyl-2-oxazoline) is 58.6 DEG C, the thermal decomposition temperature of the poly(2-ethyl-2-oxazoline) is 365-380 DEG C, the number-average molecular weight of the poly(2-ethyl-2-oxazoline) is 50000 or 200000, the blending temperature is 180 DEG C, the blending time is 3-8 minutes, and the rotation speed of the mixing equipment is 30-100 rad/minute during blending.

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