人造金刚石填充聚酰亚胺树脂基复合材料防刺性能

doi:10.13475/j.fzxb.20190406007

摘要/Abstract

摘要：

为研究树脂材料的防刺性能及防刺机制,利用手糊成型与热压法成型制备了手糊分层结构和均布结构层2种结构的人造金刚石填充聚酰亚胺树脂基复合树脂片,并探讨了人造金刚石粒径、填充体积分数对树脂片防刺性能的影响。研究结果表明:经过人造金刚石填充的聚酰亚胺树脂片的防刺性能得到提高,并且均布结构层分层复合结构的树脂片的防刺性能更好;随着人造金刚石粒径的减小,树脂片防刺性能出现先减小后增加的趋势,故防刺机制基本在于碰撞概率与树脂基的防挡;比较防刺力和消耗功发现,不同填充体积分数的单层防刺树脂片的防刺性能随人造金刚石填充体积分数的增加而逐渐降低,该趋势的成因在于复合树脂片的脆化与破坏;在颗粒等效粒径为300 μm、体积分数为10%时,其防刺性能最好。

关键词: 填充改性, 人造金刚石, 聚酰亚胺, 防刺性能, 复合材料

Abstract:

In order to study the stab resistance and mechanism of resin materials, two types of synthetic diamond-filled polyimide resin-based composite resin sheets were prepared by hand-forming and hot-pressing, respectively, which were hand lay-up and uniform composites. The effects of particle size and filling volume fraction of synthetic diamond on puncture resistance of the resin sheet are discussed. The results showed that the anti-stab performance of the polyimide resin sheet are improved due to synthetic diamond fillings, and the composite structure make from such resin demonstrates the better stab resistance. It is found that as the number of synthetic diamonds meshes increased, leading to diameter decrease, the stab resistance of the composite decreases first followed by an increase. It is understood that the stab-proof mechanism is basically associated to the collision probability and the resin-based anti-blocking. From analyzing the stab resistance and the work done, the stab resistance of the resin sheet gradually decreases with the increase of the volume fraction of the artificial diamond filling, which is believed to be caused by embrittlement and destruction of the composite resin sheet. In particular, the resin has the optimal stab resistance when the particle diameter is 300 μm and the volume fraction is 10% in the sheet.

Key words: filling modification, synthetic diamond, polyimide, stab resistance, composite material

中图分类号:

TS941

陈立富, 于伟东. 人造金刚石填充聚酰亚胺树脂基复合材料防刺性能[J]. 纺织学报, 2020, 41(05): 38-44.

CHEN Lifu, YU Weidong. Stab resistance of composites with synthetic diamond filled polyimide resin matrix[J]. Journal of Textile Research, 2020, 41(05): 38-44.

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粒径/ μm	r/ μm	S/ 10⁴ μm²	S₁/ 10⁴ μm²	V_f/ %
300.0	150.00	28.29	14.130	49.95
150.0	77.50	8.89	3.580	40.27
75.5	38.25	2.89	0.920	31.83
46.0	23.00	1.50	0.330	22.00
30.0	15.00	0.94	0.140	14.89
3.0	1.50	0.28	0.001	0.50

树脂片种类	厚度/ mm	面密度/ (g·m^-2)	准静态最大防刺力/N	准静态防刺性能/ (N·g·m²)	准静态模量/ (N·cm^-1)	平均单层树脂片消耗功/J
纯PI	2.65	2 600	197.95	0.076	562.8	0.226
I型	2.80	2 600	310.00	0.119	686.3	0.359
II型	2.18	2 600	270.68	0.104	418.9	0.336

防护等级	撞击能量 E₁/J	E₁允许穿透的最大深度 /mm	撞击能量 E₂/J	E₂允许穿透的最大深度 /mm
1	24	7	36	20
2	33	7	50	20
3	43	7	65	20

树脂片种类	厚度/ mm	等效粒径/ μm	体积分数/ %	面密度/ (g·m^-2)	刀具最大防刺力/ N	刺穿长度 L/mm
I型	2.65	0	0	2 600	372	25.08
II型	3.02	300	30	2 600	424	17.28
II型	2.02	300	50	2 600	379	20.36
II型	2.78	155	30	2 600	422	18.35
II型	2.65	155	50	2 600	446	21.47
II型	2.89	75.5	30	2 600	416	22.39
II型	2.32	75.5	50	2 600	422	24.52

厚度/ mm	等效粒径/ μm	体积分数/ %	面密度/ (g·m^-2)	刀具最大防刺力/N	刺穿长度 L/mm
4.10	0	0	2 600	372	25.08
3.30	300	10	2 600	496	10.28
3.50	300	30	2 600	643	6.87
3.40	300	50	2 600	867	12.37