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首页> 外文期刊>Journal of Applied Polymer Science >Study on short glass fiber-reinforced poly(3-hydroxybutyrate-co-4- hydroxybutyrate) composites
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Study on short glass fiber-reinforced poly(3-hydroxybutyrate-co-4- hydroxybutyrate) composites

机译：短玻璃纤维增​​强聚（3-羟基丁酸酯-co-4-羟基丁酸酯）复合材料的研究

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摘要

Biobased non-fossil polyester poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P3/4HB) containing 4.0 mol % 4-hydroxybutyrate (4HB) was melt-mixed with short glass fibers (SGF) via a co-rotating twin-screw extruder. The compositing conditions, average glass fiber length and distribution, thermal, crystallization, and mechanical properties of the P3/4HB/SGF composites were investigated. Calcium stearate, two kinds of paraffin wax and modified ethylene bis-stearamide (TAF) were investigated as lubricants for the P3/4HB/SGF composites. It revealed that TAF is the most efficient lubricant of the P3/4HB/SGF composites. Coupling agents 2,2'-(1,3-phenylene)bis-2-oxazoline (1,3-PBO) and pyromellitic dianhydride (PMDA) were used as end-group crosslinkers to reduce the degradation of P3/4HB and increase the mechanical properties of the P3/4HB/SGF composites. It showed that 1,3-PBO is the efficient coupling agent. The optimum condition of the P3/4HB/SGF composites is 1.5 phr TAF, 1.0 phr 1,3-PBO, and 30 wt % glass fiber content. And the maximum of tensile strength, tensile modulus, and impact strength of the composites is 3.7, 6.6, 1.8 times of the neat P3/4HB polymer, respectively.
机译：将含有4.0 mol％4-羟基丁酸酯（4HB）的生物基非化石聚酯聚（3-羟基丁酸酯-co-4-羟基丁酸酯）（P3 / 4HB）与玻璃短纤维（SGF）通过同向旋转双胞胎进行熔融混合。螺杆挤出机。研究了P3 / 4HB / SGF复合材料的合成条件，平均玻璃纤维长度和分布，热，结晶和力学性能。研究了硬脂酸钙，两种石蜡和改性的乙烯双硬脂酰胺（TAF）作为P3 / 4HB / SGF复合材料的润滑剂。结果表明，TAF是P3 / 4HB / SGF复合材料中最有效的润滑剂。偶联剂2,2'-（1,3-亚苯基）双-2-恶唑啉（1,3-PBO）和均苯四酸二酐（PMDA）被用作端基交联剂，以减少P3 / 4HB的降解并增加P3 / 4HB / SGF复合材料的机械性能。表明1,3-PBO是有效的偶联剂。 P3 / 4HB / SGF复合材料的最佳条件是1.5 phr TAF，1.0 phr 1,3-PBO和30 wt％的玻璃纤维含量。复合材料的最大拉伸强度，拉伸模量和冲击强度分别是纯P3 / 4HB聚合物的3.7倍，6.6倍，1.8倍。

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