Page 126 - 摩擦学学报2025年第9期

1380 摩擦学学报（中英文） 第 45 卷

高其分散性，改性机理如图1所示. 改性后的CF具有较 再结晶工艺，制备机械性能增强的交错定向3PC-C gel，
优的分散性，同时增强了复合水凝胶制备过程中CF与 制备流程如图2(a)所示.
[26]
各分子链(PAA，PVA和PAAm)结合 . 首先制备3PC-C gel溶胶预聚物(CF质量分数为
(2) 交错定向3PC-C gel的制备及优化 0、1%、2%和3%的3PC-C gel分别记作0CF 3PC-C gel、
[27]
基于温度诱导，结合纤维增强、多重交联 、退火 1CF 3PC-C gel、2CF 3PC-C gel和3CF 3PC-C gel，其中

表 1 试验试剂
Table 1 Experimental reagent
Reagent Index Manufacturer
Polymerization degree: 1 750±50;
Polyvinyl alcohol (PVA) Sinopharm Group Co, LTD
Alcoholysis degree > 99%
Polyacrylic acid (PAA) Mass fraction of 25% aqueous solution Beijing Yinokai Technology Co, LTD
Acrylamide (AAm) Mass fraction of 99% Shanghai Aladdin Biotechnology Co, LTD
N, N′ - Methylenebis (acrylamide) (MBAA) Mass fraction of 99% Shanghai Aladdin Biotechnology Co, LTD
α-ketoglutamic acid Mass fraction of 99% Shanghai Aladdin Biotechnology Co, LTD
FeCl 3 ·6H 2 O AR, mass fraction of 99% Shanghai Maclin Biochemical Technology Co, LTD
Carbon fiber (CF) Micron scale Nanjing Weida Composite Material Co, LTD

(a) (b)
Acid treatment —NH 2 O —C—OH
Oxidation —OH
CF mCF —NH 2 —C—OH
O

10 μm 10 μm

Fig. 1 Schematic diagram of surface pickling of CF
图 1 CF的表面功能化示意图

(b)

(a) 12 10.03
95 ℃ Add 50 ℃ 10 Unoriented 8.92
Oriented
PVA CF PAA 7.73 8.30
Stir 3~4 PAA Stir 1~2 8 6.40 6.38 6.88
hours hours Compressive strength/MPa 6 6.10
AAm Add 4
UV 2
Liquid 65 ℃ AAm 0 0 1 2 3
nitrogen Pour into Mass fraction of CF/%
Stir 1~2 (c)
−196 ℃ mold hours 14 Tension Unoriented 11.40 350
Unoriented
Oriented
12
Oriented
Tensile strength/MPa 6 Elongation break/%
10.10 10.44
Freeze- 10 8 7.30 7.48 7.70 9.08 9.28 300
thaw 9 times
Fe 3+ Annealing 4 2 250
0 200
0 1 2 3
Mass fraction of CF/%

Fig. 2 (a) Preparation of the staggered oriented 3PC-C gel; (b) compression and (c) tensile properties of different 3PC-C gels
图 2 (a) 交错定向3PC-C gel的制备；(b) 不同3PC-C gel的压缩性能；(c) 不同3PC-C gel的拉伸性能