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Nano-SiO2-modified acrylate polyurethane composite waterproofing agent emulsion

A technology of acrylate and water-based polyurethane, which is applied in the field of acrylate polyurethane composite emulsion and acrylate polyurethane composite water repellent emulsion. It can solve the problems of low surface tension, affecting the uniformity of film formation, and not easy to disperse uniformly, so as to increase the silicon content. , to ensure the effect of smooth implementation

Active Publication Date: 2019-05-03
浙江东进新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the waterproofing agent is often a fluorine-based additive, its surface tension is lower than that of the adhesive, and it is not easy to disperse evenly when mixed with the adhesive emulsion, which also affects the uniformity of film formation.

Method used

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  • Nano-SiO2-modified acrylate polyurethane composite waterproofing agent emulsion
  • Nano-SiO2-modified acrylate polyurethane composite waterproofing agent emulsion
  • Nano-SiO2-modified acrylate polyurethane composite waterproofing agent emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] nano-SiO 2 Modified acrylate polyurethane composite water repellent emulsion, in parts by mass, consists of 12 parts of nano-SiO 2 Sol, 46 parts of water-based polyurethane prepolymer emulsion, 26 parts of acrylate monomer, 7 parts of polymerizable silicone monomer, 6 parts of compound emulsifier, 0.4 part of initiator, and 220 parts of water are prepared by emulsion polymerization;

[0037] nano-SiO 2 Modified acrylate polyurethane composite waterproofing agent emulsion, the preparation method is as follows:

[0038] 1) Take the nano-SiO of formula quantity 2 Sol, water-based polyurethane prepolymer emulsion, acrylate monomer, polymerizable silicone monomer, emulsifier and 190 parts of water are placed in a reactor and stirred to form an emulsion; initiator and 30 parts of water form an aqueous initiator solution ;

[0039] 2) Heat up to 75°C, add 1 / 3 volume of initiator aqueous solution, and keep warm for 0.5h;

[0040] 3) Add the remaining aqueous solution of th...

Embodiment 2

[0046] nano-SiO 2 Modified acrylate polyurethane composite water repellent emulsion, in parts by mass, consists of 15 parts of nano-SiO 2 Sol, 54 parts of water-based polyurethane prepolymer emulsion, 32 parts of acrylate monomer, 10 parts of polymerizable silicone monomer, 9 parts of composite emulsifier, 0.5 part of initiator, and 250 parts of water are prepared by emulsion polymerization;

[0047] nano-SiO 2 Modified acrylate polyurethane composite waterproofing agent emulsion, the preparation method is as follows:

[0048] 1) Take the nano-SiO of formula quantity 2 Sol, water-based polyurethane prepolymer emulsion, acrylate monomer, polymerizable silicone monomer, emulsifier and 220 parts of water are placed in a reactor and stirred to form an emulsion; initiator and 30 parts of water form an aqueous initiator solution ;

[0049] 2) Heat up to 75°C, add 1 / 3 volume of initiator aqueous solution, and keep warm for 0.5h;

[0050] 3) Add the remaining aqueous solution of ...

Embodiment 3

[0056] nano-SiO 2 Modified acrylate polyurethane composite water repellent emulsion, in parts by mass, consists of 18 parts of nano-SiO 2 Sol, 62 parts of water-based polyurethane prepolymer emulsion, 38 parts of acrylate monomer, 12 parts of polymerizable silicone monomer, 12 parts of composite emulsifier, 0.7 part of initiator, and 280 parts of water are prepared by emulsion polymerization;

[0057] nano-SiO 2 Modified acrylate polyurethane composite waterproofing agent emulsion, the preparation method is as follows:

[0058] 1) Take the nano-SiO of formula quantity 2 Sol, water-based polyurethane prepolymer emulsion, acrylate monomer, polymerizable silicone monomer, emulsifier and 250 parts of water are placed in a reactor and stirred to form an emulsion; initiator and 30 parts of water form an aqueous initiator solution ;

[0059] 2) Heat up to 75°C, add 1 / 3 volume of initiator aqueous solution, and keep warm for 0.5h;

[0060] 3) Add the remaining aqueous solution of...

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Abstract

The invention discloses a nano-SiO2-modified acrylate polyurethane composite waterproofing agent emulsion. The emulsion is prepared by the step of performing emulsion polymerization on the following components: 12-18 parts of a nano SiO2 sol, 46-62 parts of a water-based polyurethane prepolymer emulsion, 26-38 parts of an acrylate monomer, 7-12 parts of a polymerizable organosilicone monomer (as shown in a formula 1), 6-12 parts of a composite emulsifying agent, 0.4-0.7 part of an initiator, and 220-280 parts of water; and a preparation method comprises the following steps: taking the nano-SiO2 sol, the water-based polyurethane prepolymer emulsion, the acrylate monomer, the emulsifying agent and an appropriate amount of water according to a formula amount, placing the taken materials intoa reactor, and performing stirring to form an emulsion; performing heating to 75 DEG C, adding a small amount of an initiator aqueous solution, and performing a heat preservation reaction for 0.5 h; adding the remaining initiator aqueous solution dropwise within 1 h, and performing a heat preservation reaction for 2 h; performing heating to 80 DEG C, and continuing heat preservation for 0.5 h; andperforming cooling, and performing filter to obtain the nano-SiO2-modified acrylate polyurethane composite waterproofing agent emulsion.

Description

technical field [0001] The present invention relates to a kind of acrylate polyurethane compound emulsion, relate in particular to a kind of nano-SiO 2 A modified acrylate polyurethane composite waterproof agent emulsion belongs to the field of functional acrylate polyurethane emulsion. Background technique [0002] The waterproof coating of textile fabrics is usually made of waterproofing agent and adhesive emulsion, thickener to adjust the viscosity, coating slurry is applied to the surface of the fabric through coating equipment, and then dried. Because the waterproofing agent is often a fluorine-based additive, its surface tension is lower than that of the adhesive. When mixed with the adhesive emulsion, it is not easy to disperse evenly, and it also affects the uniformity of film formation. In addition, fluorine-based waterproofing agents, because fluorine-containing products are not easy to degrade, have a negative impact on the environment, so the use of such additiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08F230/08C08F220/18C08F2/44C08K3/36C08G18/75C08G18/66C08G18/61C08G18/48C08G18/34C08G18/32C08G18/12D06N3/00D06N3/04D06N3/12D06N3/14
Inventor 陈明贤孙立新董洪波
Owner 浙江东进新材料有限公司