Dealcoholized single-component transparent organic silicon sealant and preparation method thereof

By using specific surface modifiers and adhesive accelerators in dealcoholic single-component transparent silicone sealant, the product's shortcomings in adhesion, storage stability and transparency are solved, and excellent adhesiveness and good storage performance to a variety of materials are achieved.

CN119709111AActive Publication Date: 2025-03-28GUANGZHOU BAIYUN CHEM IND +1
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Patent Information

Application Number
CN202510003026.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-02
Publication Date
2025-03-28
Estimated Expiration
2045-01-02

AI Technical Summary

Technical Problem

The existing dehydrogenated single-component transparent silicone sealants have shortcomings in terms of broad bonding, storage stability and transparency, especially the bonding effect on organic materials, which is prone to thickening during storage, and have poor transparency.

Method used

Reaction reflux of ethyl acetoacetate diisopropoxy aluminum, acetoacetate, and vinyl trimethoxysilane were used as surface modifiers, and γ-aminopropyl trimethoxysilane, etc. were used as the adhesive accelerator. Combined with specific mass ratios and reaction conditions, a dehydrogenated single-component transparent silicone sealant with high transparency, good adhesion and storage stability was prepared.

Benefits of technology

It achieves excellent adhesion to glass, metal and a variety of organic materials, improves the storage stability and transparency of the product, and ensures good performance in harsh environments.

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Abstract

The invention belongs to the technical field of dealcoholization type single-component organic silicon sealants, and particularly discloses a dealcoholization type single-component transparent organic silicon sealant and a preparation method thereof.The dealcoholization type single-component transparent organic silicon sealant is prepared from, by mass, 100 parts of alkoxy-terminated polydimethylsiloxane, 10-20 parts of polydimethylsiloxane, 10-20 parts of polydimethylsiloxane, 10-20 parts of polydimethylsiloxane, 10-20 parts of polydimethylsiloxane, 10-20 parts of polydimethylsiloxane, 10-20 parts of polydimethylsiloxane, 10-20 parts of polydimethylsiloxane and 10-20 parts of a solvent. 5 to 30 parts of fumed silica filler; 2 to 10 parts of a surface modifier; 10 to 30 parts of a cross-linking agent; 0.5 to 2 parts of a catalyst; 0.5 to 2 parts of an adhesion promoter; wherein the surface modifier is a reflux substance obtained by carrying out a reaction on ethyl diacetoacetate diisopropoxy aluminum, ethyl acetoacetate and vinyl trimethoxy silane at the temperature of 60 to 80 DEG C for 2 to 3 hours. The dealcoholized single-component transparent organosilicon sealant prepared by the invention has excellent adhesion to materials such as glass, metal, PC, PBT, PET, PVC, ABS and the like, and has excellent storage stability and transparency.
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