The blocking agent's expansion and high salt resistance is qualified, and the formula revamped several times, but the agent failed the technical requirements to reach 120℃, In Ruanruo Peng's suggestion, project principal investigator increased the organosilane coupling agent, changed the blocking agent initiator GNSA04 to GNSA07, through performance tests show that the blocking agent for high temperature resistance is increased, can be up to 120 ℃, while the expansion and high salt resistance qualified to meet the performance requirements, I hereby certify that.

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