Antifouling silane-modified polyether adhesive and preparation method thereof

A silane-modified polyether, anti-fouling technology, applied in the field of sealants, can solve the problems of affecting the appearance and visual effect of buildings, easy to accumulate on the surface, difficult to maintain buildings, etc., achieve excellent gloss retention, improve adhesion and adhesion Sexuality, high elasticity effect

Active Publication Date: 2022-07-12
GUANGZHOU BAIYUN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional sealant has poor weather resistance, and the colloid is easy to accumulate on the surface after cracking and pulverization, or due to its own characteristics, dust and industrial air pollutants are easy to adsorb and accumulate on the surface of the colloid.
These adsorption accumulations are easy to cause discoloration or fading on the surface of the rubber under the erosion of rainwater; and some organic substances contained in the sealant itself, such as plasticizers that do not participate in the reaction, unreacted polymers, etc. Migration slowly penetrates into the surface of the building substrate, forming dark bands of pollutants on both sides of the substrate joints, which affects the appearance and visual effects of the building, and also brings great difficulties to the maintenance of the building

Method used

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  • Antifouling silane-modified polyether adhesive and preparation method thereof
  • Antifouling silane-modified polyether adhesive and preparation method thereof
  • Antifouling silane-modified polyether adhesive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0055] The antifouling silane-modified polyether adhesive provided in this embodiment is prepared from the following components in parts by weight:

[0056]

[0057]

[0058] Wherein the preparation method of the fluorosilane-modified polyether polymer is as follows:

[0059] The first step, the preparation of amino-terminated fluorosiloxane: ① Under nitrogen protection at a temperature of 60 ° C, according to the mass ratio of 3,3,3-trifluoropropylmethylcyclotrisiloxane (D 3 F): ethylenediamine (catalyst): water=100:0.7:0.2, put D 3 F, ethylenediamine and water are stirred at constant temperature for 10h to carry out anionic ring-opening polymerization to generate hydroxyfluorosilicone oil (D 3 FOH). The reaction mechanism is as follows:

[0060]

[0061] ②The above prepared D 3 The FOH was transferred to the reaction vessel, nitrogen was introduced, and heated, according to the molar ratio of D 3 FOH: Aminosiloxane=1:2.5 Aminosiloxane KH550 was gradually added ...

Embodiment 2

[0069] The antifouling silane-modified polyether adhesive provided in this embodiment is prepared from the following components in parts by weight:

[0070]

[0071] Wherein the preparation method of the fluorosilane-modified polyether polymer is as follows:

[0072] The first step, the preparation of amino-terminated fluorosiloxane: ① Under nitrogen protection at a temperature of 60 ° C, according to the mass ratio of 3,3,3-trifluoropropylmethylcyclotrisiloxane (D 3 F): ethylenediamine (catalyst): water=100:2:0.5, put D 3 F, ethylenediamine and water are stirred at constant temperature for 10, and anionic ring-opening polymerization is carried out to generate D 3 FOH.

[0073] ②The above prepared D 3 The FOH was transferred to the reaction vessel, nitrogen was introduced, and heated, according to the molar ratio of D 3 FOH: Aminosiloxane=1:4 Aminosiloxane KH540 was gradually added dropwise, and the reaction was carried out at a constant temperature of 50° C. for 4 hour...

Embodiment 3

[0080] The antifouling silane-modified polyether adhesive provided in this embodiment is prepared from the following components in parts by weight:

[0081]

[0082]

[0083] Wherein the preparation method of the fluorosilane-modified polyether polymer is as follows:

[0084] The first step, preparation of amino-terminated fluorosiloxane: ① Under nitrogen protection and at a temperature of 60 °C, according to the mass ratio of 3,3,3-trifluoropropylmethylcyclotrisiloxane (D 3 F): ethylenediamine (catalyst): water=100:1.5:0.8, put D 3 F, ethylenediamine and water are stirred at constant temperature for 10h to carry out anionic ring-opening polymerization to generate D3 FOH.

[0085] ②The above prepared D 3 The FOH was transferred to the reaction vessel, nitrogen was introduced, and heated, according to the molar ratio of D 3 FOH: Aminosiloxane=1:5 Aminosiloxane KH792 was gradually added dropwise, and the reaction was carried out at a constant temperature of 80° C. for 3...

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Abstract

The invention discloses an antifouling silane-modified polyether glue and a preparation method thereof. The antifouling silane-modified polyether adhesive is prepared from raw materials including the following components: fluorosilane-modified polyether polymer, acrylic acid-modified MS polymer, reactive diluent, reinforcing filler, rheological agent, and stabilizer , water scavenger, coupling agent, catalyst A; the fluorosilane-modified polyether polymer is obtained by reacting amino-terminated fluorosiloxane and isocyanate-terminated polyether prepolymer in the presence of a reactivity moderator; The amino-terminated fluorosiloxane is prepared from hydroxyfluorosilicone oil and aminosiloxane; the isocyanate-terminated polyether prepolymer is obtained by the reaction of polyether polyol and polyisocyanate under the action of catalyst B; the active dilution The agent is a single-ended alkoxysilyl polyether. The antifouling silane-modified polyether adhesive has excellent antifouling performance, weather resistance and physical and mechanical properties.

Description

technical field [0001] The invention relates to the technical field of sealants, in particular to an antifouling silane-modified polyether glue and a preparation method thereof. Background technique [0002] Sealant is widely embedded in all kinds of building joints, glass, and doors and windows. It plays the role of watertightness and airtightness. It has functions such as energy saving and waterproofing. It is one of the important materials in the field of construction. However, the traditional sealant has poor weather resistance, and the colloid is easy to accumulate on the surface after cracking and pulverizing, or due to its own characteristics, dust and industrial air pollutants are easily adsorbed and accumulated on the surface of the colloid. These adsorbed aggregates can easily cause discoloration or fading on the surface of the glue under the scouring of rainwater; and some organic substances contained in the sealant itself, such as plasticizers that do not partici...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J171/00C09J201/00
CPCC09J171/00C09J201/00C08L2201/08C08L101/00C08L71/00
Inventor 陈洋庆高敏华陈建军黄恒超缪明松
Owner GUANGZHOU BAIYUN CHEM IND
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