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GAP 基 自 修 复 粘 结 剂 的 制 备 及 性 能
58-65.
自修复时间的增加,粘结剂的拉伸强度也随之增加,这
[4] Huyang G,Debertin A E,Sun J. Design and development of
可能是因为自修复时间越长,双硫键的动态交换作用
self‐healing dental composites[J]. Materials & Design,2016,
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越充分,进而导致了自修复效率提高,因而拉伸强度也
[5] Zhang Y,Ying H,Hart K R,et al. Malleable and recyclable
能恢复并接近原样。
poly(urea‐urethane) thermosets bearing hindered urea bonds
[J]. Advanced Materials,2016,28(35):7646-7651.
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sulfide bonds[J]. Macromolecular Chemistry and Physics,
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图 9 不同时间自修复后的粘结剂拉伸强度
Fig.9 The tensile strength of binders at different self‐healing [9] 杨一林,卢珣,王巍巍,等 . 热可逆自修复聚氨酯弹性体的制备及
表征[J]. 材料工程,2017,45(8):1-8.
time YANG Yi‐lin,LU Xun,WANG Wei‐wei,et al. Preparation and
characterization of thermally reversible self‐healing polyure‐
thane elastomer[J]. Journal of Materials Engineering,2017,45
4 结 论 (8):1-8.
[10] Jian X,Hu Y,Zhou W,et al. Self‐healing polyurethane based
on disulfide bond and hydrogen bond[J]. Polymers for Ad⁃
(1)采用一步法制备得到 GAP 基自修复粘结剂,
vanced Technologies,DOI:10.1002/pat.4135.
红外光谱和 XRD 结果表明其结构为氨基甲酸酯结构,
[11] 菅晓霞,郑启龙,胡义文,等 . PBT 弹性体力学性能及低温脆性研
究[J]. 固体火箭技术,2017,40(2):189-193.
且为无定形态,软硬段相分离不明显。三维显微镜观
JIAN Xiao‐xia,ZHENG Qi‐long,HU Yi‐wen,et al. Mechanical
察结果显示在 60 ℃自修复 24 h 后 GAP 基自修复粘结
properties and low temperature embrittleness of PBT elastomer
剂的表面基本无裂纹;
[J]. Journal of Solid Rocket Technology, 2017, 40(2):
189-193.
(2)测 试 了 GAP 基 自 修 复 粘 结 剂 样 品 的 拉 伸 强
[12] 王巍巍 . 热可逆自修复弹性体的制备、结构与性能研究[D]. 广
度,结果表明,GAP 基自修复粘结剂在自修复 5 h 后,
州:华南理工大学,2015.
自修复效率增加趋于平缓,24 h 能基本达到平衡。自 WANG Wei‐wei. Studies on preparation,structure and proper‐
ties of thermally reversible self‐healing elastomers[D]. Guang‐
修复温度从 20 ℃提高到 60 ℃,粘结剂的自修复效率
zhou:South China University of Technology,2015.
[13] Lafont U,Van Z H,Van d Z S. Influence of cross‐linkers on
从 34.8% 提高到 72.4%。交联剂质量分数为 8% 的试
the cohesive and adhesive self‐healing ability of polysul‐
样,在 60 ℃处理 24 h 后自修复效率可达 98.2%,与对
fide‐based thermosets[J]. ACS Applied Materials & Interfaces,
比样的自修复效率(61.7%)相比,双硫键的引入提高
2012,4(11):6280-6288.
[14] Yang J X,Long Y Y,Pan L,et al. Spontaneously healable ther‐
了该粘结剂的自修复效率。
moplastic elastomers achieved through one‐pot living ring‐open‐
ing metathesis copolymerization of well‐designed bulky mono‐
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CHINESE JOURNAL OF ENERGETIC MATERIALS 含能材料 2019 年 第 27 卷 第 2 期 (131-136)