Rail transit calcined welding sealant and preparation method thereof
The invention discloses a rail transit calcined welding sealant and a preparation method thereof, and the sealant comprises the following raw materials by mass: 80-120 parts of a silane modified polymer, 60-100 parts of a plasticizer, 150-210 parts of a modified filler, 2-10 parts of a thixotropic a...
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| creator | SHEN FENG HE YONGFU LIU WEIMING CHEN DAN YOU YUZHONG QIU HANGJIAN CHAI MENGSA CHEN JUN |
| description | The invention discloses a rail transit calcined welding sealant and a preparation method thereof, and the sealant comprises the following raw materials by mass: 80-120 parts of a silane modified polymer, 60-100 parts of a plasticizer, 150-210 parts of a modified filler, 2-10 parts of a thixotropic agent, 0.5-3 parts of an anti-ultraviolet agent, 0.5-3 parts of a light stabilizer, 0.5-3 parts of a heat stabilizer, 3-6 parts of a water removal agent, 3-6 parts of a silane coupling agent, 3-7 parts of a curing agent, and 6-12 parts of a silane oligomer. And the silane oligomer is an epoxy amino silane oligomer. The silane modified polymer can form a cross-linked network structure which takes a silicon-oxygen-silicon bond as a cross-linking point and is connected by a flexible polymer long chain, the silane oligomer can increase the cross-linking density of the sealant, silicon hydroxyl contained in the sealant and active groups in the silane oligomer can form chemical connection with a base material, and the bon |
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And the silane oligomer is an epoxy amino silane oligomer. The silane modified polymer can form a cross-linked network structure which takes a silicon-oxygen-silicon bond as a cross-linking point and is connected by a flexible polymer long chain, the silane oligomer can increase the cross-linking density of the sealant, silicon hydroxyl contained in the sealant and active groups in the silane oligomer can form chemical connection with a base material, and the bon</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMISTRY DYES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL PAINTS POLISHES USE OF MATERIALS AS ADHESIVES |
| title | Rail transit calcined welding sealant and preparation method thereof |
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