Environment-friendly built-in sealant and preparation method thereof
A green and environmentally friendly sealant technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of long bonding and positioning time and slow curing speed of room temperature vulcanized silicone rubber, and improve the decoration work. Efficiency and quality assurance, the effect of improving adhesion and improving curing efficiency
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Embodiment 1
[0027] A green environment-friendly interior sealant, comprising the following components by weight: 100 parts by weight of hydroxyl-terminated polydimethylsiloxane, 80 parts by weight of hydrophobic silicon dioxide, 30 parts by weight of methyl silicone oil, 7 parts by weight of vinyl tri Ethoxysilane, 3 parts by weight of butyl titanate, 8 parts by weight of hydrophobic fumed silica, 1 to 2 parts by weight of γ-glycidyl etheroxypropyl triethoxy, 0.1 parts by weight of organic bismuth, wherein the hydrophobic two The ratio of silicon oxide to hydrophobic fumed silica is 10:1, and the ratio of butyl titanate to organic bismuth is 30:1.
Embodiment 2
[0029] A green environment-friendly interior sealant, comprising the following components by weight: 100 parts by weight of hydroxyl-terminated polydimethylsiloxane, 90 parts by weight of hydrophobic silicon dioxide, 30 parts by weight of methyl silicone oil, 7 parts by weight of vinyl tri Ethoxysilane, 3.6 parts by weight of butyl titanate, 9 parts by weight of hydrophobic fumed silica, 1 to 2 parts by weight of γ-glycidyl etheroxypropyl triethoxy, 0.12 parts by weight of organic bismuth, wherein the hydrophobic two The ratio of silicon oxide to hydrophobic fumed silica is 10:1, and the ratio of butyl titanate to organic bismuth is 30:1.
Embodiment 3
[0031] A green environment-friendly interior sealant, comprising the following components by weight: 100 parts by weight of hydroxyl-terminated polydimethylsiloxane, 100 parts by weight of hydrophobic silicon dioxide, 30 parts by weight of methyl silicone oil, 7 parts by weight of vinyl tri Ethoxysilane, 4.5 parts by weight of butyl titanate, 10 parts by weight of hydrophobic fumed silica, 1 to 2 parts by weight of γ-glycidyl etheroxypropyl triethoxy, 0.15 parts by weight of organic bismuth, wherein, hydrophobic two The ratio of silicon oxide to hydrophobic fumed silica is 10:1, and the ratio of butyl titanate to organic bismuth is 30:1.
[0032] A preparation method of a green environment-friendly interior sealant, comprising the following steps:
[0033] 1) Stir 100 parts by weight of hydroxyl-terminated polydimethylsiloxane and 80 to 100 parts by weight of hydrophobic silica at a vacuum of 0.085 to 0.1 MPa and a temperature of 120 to 140 degrees Celsius for 90 to 120 minute...
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