Self-healing agent, self-healing condensation type silicone sealant and preparation method of self-healing condensation type silicone sealant

The invention discloses a self-healing agent, a self-healing condensed silicone sealant and a preparation method of the self-healing condensed silicone sealant. The self-healing agent is obtained by reacting hydrogen-containing silane and an amide olefine acid compound under the action of a catalyst, the structural formula of the hydrogen-containing silane is HSi (R1) (OR2) 2, R1 is selected from C1-C6 alkoxy and C1-C6 alkyl, and R2 is selected from C1-C6 alkyl; the structural formula of the amide olefine acid compound is H2NCOCH = CH (CH2) mCOOH, and m is selected from 0, 1, 2, 3 and 4. The self-healing condensed silicone sealant prepared from the self-healing agent has a good self-healing effect, and has excellent mechanical properties and hydrophilic stability. 本发明公开了一种自愈合剂、自愈合缩合型硅酮密封胶及其制备方法，该自愈合剂由含氢硅烷和酰胺烯酸类化合物在催化剂的作用下反应得到；所述含氢硅烷的结构式为HSi(R1)(OR2)2，其中，R1选自：C1-C6烷氧基、C1-C6烷基，R2选自：C1-C6烷基；所述酰胺烯酸类化合物的结构式为H2NCOCH＝CH(CH2)mCOOH，其中，m选自：0、1、2、3、4。利用该自愈合剂制备出的自愈合缩合型硅酮密封胶具有良好的自愈合效果，而且具有优异的力学性能和亲水稳定性。