Acidic silicone sealant and preparation method thereof

The invention relates to the field of sealants, in particular to an acidic silicone sealant and a preparation method thereof.The acidic silicone sealant is prepared from base gum, silicone oil, white carbon black, white oil, an acidic cross-linking agent, a coupling agent and a catalyst, the coupling agent is any one of a monoamino silane coupling agent, a diamino silane coupling agent, an oligomer of the monoamino silane coupling agent and an oligomer of the diamino silane coupling agent, and in the preparation process, the acidic cross-linking agent and the coupling agent react to obtain a pre-reactant, and then the pre-reactant is mixed with other components. The acidic cross-linking agent firstly reacts with the coupling agent, so that the acidic silicone sealant has better yellowing resistance, and the acidic or silicone sealant disclosed by the invention has a better application prospect. 本申请涉及密封胶领域，具体涉及一种酸性硅酮密封胶及其制备方法，该酸性硅酮密封胶的原料包括基胶、硅油、白炭黑、白油、酸性交联剂、偶联剂、催化剂，其中，偶联剂为单氨基硅烷偶联剂、双氨基硅烷偶联剂、单氨基硅烷偶联剂的低聚物、双氨基硅烷偶联