Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (05): 38-44.doi: 10.13475/j.fzxb.20190406007

• Fiber Materials • Previous Articles     Next Articles

Stab resistance of composites with synthetic diamond filled polyimide resin matrix

CHEN Lifu1, YU Weidong1,2()   

  1. 1. College of Textiles, Donghua University, Shanghai 201620, China
    2. Key Laboratory of Textile Fabric Technology, Ministry of Education, Donghua University, Shanghai 201620, China
  • Received:2019-04-23 Revised:2020-01-11 Online:2020-05-15 Published:2020-06-02
  • Contact: YU Weidong E-mail:wdyu@dhu.edu.cn

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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

CLC Number: 

  • TS941

Fig.1

Manufacturing process of type I multilayer synthetic diamond-PI composite resin sheet"

Fig.2

Process flow of type II multilayer synthetic diamond-PI composite resin sheet"

Fig.3

Synthetic diamond(×50)"

Fig.4

Tool is magnified 50 times before and after puncturing comparison. (a) Before puncturing;(b) Puncturing small particle size;(c) Puncturing big particle size"

Fig.5

Synthetic diamonds are completely blocking the tip"

Fig.6

Round synthetic diamond repeating unit under critical conditions"

Tab.1

Volume fraction distribution of SD during inevitable collision"

粒径/
μm		 r/
μm		 S/
104 μm2		 S1/
104 μm2		 Vf/
%
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

Fig.7

Cross-section of two different structural composite resin sheets (×50). (a) Image of type I optical microscope; (b) Image of type II optical microscope; (c) Image of type I SEM; (d) Image of type II SEM"

Fig.8

Quasi-static stab resistance of different structural resin sheets. (a) Pure resin; (b) Type I; (c) Type II"

Tab.2

Specifications of stab-resistant materials and quasi-static stab resistance"

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

Fig.9

Single layer resin sheet stab resistance test"

Fig.10

Stab resistance of a single-layer resin sheet with volume fraction of 10%"

Fig.11

Quasi-static stab resistance test of single-layer different volume fraction resin tablets"

Tab.3

International stab resistance performance classification"

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

Tab.4

Specifications and dynamic stab resistance of composite resin sheet"

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

Tab.5

Type I stab resistant material specifications and dynamic stab resistance"

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
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