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Single-component room-temperature sulfuration transparent dealcoholization-type mildew-resistant silicone sealant and preparation method thereof

A silicone sealant, room temperature vulcanization technology, applied in chemical instruments and methods, adhesives, other chemical processes, etc., can solve the problems of performance impact, unsightly appearance of the sealant, damage to the molecular structure of the sealant, etc., to achieve stable storage period, Excellent anti-mold effect and strong adhesion

Active Publication Date: 2014-02-26
JIANGSU TIANCHEN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, mold growth in a hot and humid environment will destroy the internal molecular structure of the sealant, resulting in an unsightly appearance of the sealant and affecting its performance. Therefore, the use of silicone sealants that can effectively prevent mold in a hot and humid environment has attracted more and more attention.

Method used

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  • Single-component room-temperature sulfuration transparent dealcoholization-type mildew-resistant silicone sealant and preparation method thereof
  • Single-component room-temperature sulfuration transparent dealcoholization-type mildew-resistant silicone sealant and preparation method thereof
  • Single-component room-temperature sulfuration transparent dealcoholization-type mildew-resistant silicone sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Calculated in parts by weight, 100 parts of polydimethylsiloxane with terminal methyl dimethoxysiloxane, 10 parts of fumed silica, 5 parts of polydimethylsiloxane with terminal methyl, methyl Add 8 parts of trimethoxysilane, 3 parts of γ-aminopropyltriethoxysilane, 2 parts of tetra-tert-butyl titanate compound, and 0.5 parts of anti-fungal agent mildew into planetary mixer, vacuum degree 0.06-0.09 MPa, stirring speed 50 rev / min, stirring for 2.5-3h to make one-component room temperature vulcanization transparent dealcoholized anti-mold silicone sealant. See attached table 1 for product performance test results

Embodiment 2

[0024] Calculated in parts by weight, 100 parts of polydimethylsiloxane with terminal methyl dimethoxysiloxane, 10 parts of fumed silica, 5 parts of polydimethylsiloxane with terminal methyl, methyl Add 8 parts of trimethoxysilane, 3 parts of γ-aminopropyltriethoxysilane, 0.5 part of antifungal agent Mycoba, and 2 parts of tetra-tert-butyl titanate compound into the planetary mixer, vacuum degree 0.06-0.09 MPa, stirring speed 50 rev / min, stirring for 2.5-3h to make one-component room temperature vulcanization transparent dealcoholized anti-mold silicone sealant. See attached table 1 for product performance test results

Embodiment 3

[0026] Calculated in parts by weight, 100 parts of polydimethylsiloxane with terminal methyl dimethoxysiloxane, 10 parts of fumed silica, 5 parts of polydimethylsiloxane with terminal methyl, methyl Add 8 parts of trimethoxysilane, 3 parts of γ-aminopropyltriethoxysilane, 1 part of antifungal agent Mycoba, and 2 parts of tetra-tert-butyl titanate compound into the planetary mixer, vacuum degree 0.06-0.09 MPa, stirring speed 50 rev / min, stirring for 2.5-3h to make one-component room temperature vulcanization transparent dealcoholized anti-mold silicone sealant. See attached table 1 for product performance test results

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Abstract

The invention discloses a single-component room-temperature sulfuration transparent dealcoholization-type mildew-resistant silicone sealant and a preparation method thereof. The silicone sealant comprises following components by weight: 100 parts of polydimethylsiloxane ends of which is methyldimethoxysiloxy, 5-15 parts of fumed silica, 5-10 parts of a plasticizer, 5-15 parts of a cross-linking agent, 0.5-7.5 parts of a coupling agent, 0.1-5 parts of a mildew inhibitor and 0.1-5 parts of a catalyst. The silicone sealant can effectively prevent glue yellowing on the basis of guaranteeing a high one-component sulfuration speed at room temperature and excellent adhesive performances. The preparation method is simple in operation.

Description

technical field [0001] The invention belongs to the technical field of one-component room temperature vulcanized silicone sealant, and in particular relates to a transparent dealcoholized anti-mildew silicone sealant and a preparation method thereof. Background technique [0002] Silicone sealants have excellent weather aging resistance, UV stability, high and low temperature resistance, and can maintain elasticity, no tearing and no cracking in harsh climate environments. Therefore, with the rapid development of the economy, the application of silicone sealant in construction and other industries is becoming more and more extensive, and the requirements for its product performance are also getting higher and higher. Transparent dealcoholized silicone sealant has anti-yellowing, strong adhesion, low corrosion and beautiful appearance, and is suitable for kitchens, bathrooms and other building environments with high demand. However, mold growth in a hot and humid environment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/06C09J11/04C09J11/06C09J11/08C09K3/10
Inventor 阚新宇徐古月陆纪平
Owner JIANGSU TIANCHEN NEW MATERIALS