High-performance acidic transparent silicone sealant

A high-performance, sealant technology, applied in adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve problems such as water resistance, affecting service life, high and low temperature resistance, etc., to improve strength and hardness, Uniform distribution of fillers and the effect of increasing the filling amount

Active Publication Date: 2011-03-02
ZHEJIANG TIME NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the sealant used is basically a colored sealant, which will turn yellow after drying, which will affect the overall effect of the curtain wall and the visual appear

Method used

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  • High-performance acidic transparent silicone sealant
  • High-performance acidic transparent silicone sealant

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1 Take the following components by weight:

[0023] Hydroxy-terminated polydimethylsiloxane 10000 mpa.s 20 parts

[0024] Hydroxy-terminated polydimethylsiloxane 700,000 mpa.s 70 parts

[0025] Ethyl silicone oil 50 mpa.s 60 parts

[0026] 2.5 parts of methyltriacetoxysilane

[0027] 2.5 parts of ethyl triacetoxysilane

[0028] Fumed silica 80m 2 / g 10 servings

[0029] Fumed silica 150m2 / g 10 parts

[0030] 0.01 parts of 4-benzoyloxy-2,2,6,6-tetramethylpiperidine

[0031] 0.005 parts of dibutyl tin diacetate

[0032] According to the conventional preparation method, put the above-mentioned raw materials: 20 parts of hydroxy-terminated polydimethylsiloxane 10000 mpa.s, 70 parts of hydroxy-terminated polydimethylsiloxane 700,000 mpa.s, and 60 parts of ethyl silicone oil 50 mpa.s. After arriving in the glue making tank, push the glue making tank into the glue making machine, add 2.5 parts of methyl triacetoxy silane and 2.5 parts of ethyl triacetoxy silane, and vacuum (the vacu...

Example Embodiment

[0033] Example 2 Take the following components by weight:

[0034] Hydroxy-terminated polydimethylsiloxane 20000 mpa.s 100 parts

[0035] Hydroxy-terminated polydimethylsiloxane 400000 mpa.s 10 parts

[0036] Methyl silicone oil 5000 mpa.s 60 parts

[0037] 5 parts of methyl triacetoxysilane

[0038] 10 parts of ethyl triacetoxysilane

[0039] Fumed silica 170m 2 / g 8 parts

[0040] Fumed silica 220m2 / g 80 parts

[0041] 0.5 part of 4-benzoyloxy-2,2,6,6-tetramethylpiperidine

[0042] 0.4 parts of 2-hydroxy-4-methoxybenzophenone

[0043] Dibutyl tin diacetate 0.15 parts

[0044] The above-mentioned raw materials are uniformly mixed according to the method of Example 1 to obtain a high-performance acid structural sealant.

Example Embodiment

[0045] Example 3 Take the following components by weight:

[0046] Hydroxy-terminated polydimethylsiloxane 30000 mpa.s 5 parts

[0047] Hydroxy-terminated polydimethylsiloxane 60000 mpa.s 100 parts

[0048] Methyl phenyl silicone oil 100 mpa.s 60 parts

[0049] 5 parts of methyl triacetoxysilane

[0050] Ethyl triacetoxysilane 5 parts

[0051] Fumed silica 170m 2 / g 40 parts

[0052] Fumed silica 220m2 / g 50 parts

[0053] 0.5 parts of hexamethylphosphoric triamide

[0054] 0.1 part of dibutyl tin dilaurate

[0055] The above-mentioned raw materials are uniformly mixed according to the method of Example 1 to obtain a high-performance acid structural sealant.

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Abstract

A high-performance acidic transparent silicone sealant belongs to the technical field of the adhesive. The sealant comprises the following components in parts by weight: 90-130 parts of hydroxyl-terminated polydimethylsiloxane, 10-60 parts of alkyl-terminated polydimethylsiloxane, 5-15 parts of crosslinking agent, 20-90 parts of silicon dioxide, 0.01-0.9 part of anti-yellowing agent and 0.005-0.15 part of catalyst, wherein crosslinking agent is the mixture of methyltriacetoxysilane and ethyltriacetoxysilane; anti-yellowing agent is one or more of ultraviolet absorbent and light stabilizer; and catalyst is dibutyltin diacetate or dibutyltin dilaurate. The invention does not depend on the foreign product and provides the high-performance acidic sealant so as to fills the gap that neutral transparent silicone sealant can not be used in the glass fishbowl; and the sealant has good bonding property to the substrate, and can not have blushing and yellowing and can have no pollution to the environment. The sealant can satisfy the demands of the specific curtain wall, glass roof and glass fishbowl.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a high-performance acidic transparent silicone structural sealant with high adhesion, anti-yellowing, high and low temperature resistance, and water-ultraviolet light resistance. Background technique [0002] Glass aquarium, glass lighting roof, point curtain wall, hanging glass curtain wall, hidden frame glass curtain wall and insulating glass have become an important part of modern architecture because of their light, thin and transparent characteristics. These are mostly made of transparent white glass and silver aluminum alloy profiles, bonded and sealed through structural assembly. At present, the sealant used is basically a colored sealant, which will turn yellow after drying, which will affect the overall effect of the curtain wall and the visual appearance of people, and the sealant used is not good because of poor adhesion, high and low temperature resistan...

Claims

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Application Information

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IPC IPC(8): C09J183/06C09J183/04C09J11/04C09J11/06C09K3/10
Inventor 林菊琴
Owner ZHEJIANG TIME NEW MATERIAL
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