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Water-based waterproof base film for wallpaper and preparation method of water-based waterproof base film

A wallpaper and base film technology, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of reduced adhesion between the base film and the wall, environmental and human hazards, loose base film, etc., to achieve strong hardness , The effect of less by-products and strong adhesion

Active Publication Date: 2017-01-11
GUANGDONG YULAN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a basement membrane prevents the moisture generated inside the wall from being discharged through the basement membrane, and the moisture accumulates under the basement membrane, which reduces the adhesion between the basement membrane and the wall, and causes the basement membrane to become loose and loose as time goes on. Blistering, followed by blistering, cracking and peeling
At the same time, the system contains a large amount of harmful substances such as benzene compounds, which are very harmful to the environment and human body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A water-based wallpaper waterproof base film, comprising the following raw materials in parts by weight:

[0044] 30 parts of modified polyisocyanate,

[0045] 20 parts of long-chain dihydric alcohols,

[0046] Hydroxy-functionalized acrylate 35 parts,

[0047] Active diluent 25 parts,

[0048] Catalyst 0.5 part,

[0049] Silica powder 20 parts,

[0050] 4.5 parts of silane coupling agent,

[0051] 1.5 parts of coagulant,

[0052] Leveling agent 0.5 parts,

[0053] 0.1 parts of curing agent,

[0054] Wherein, the curing agent is composed of dibenzoyl peroxide and a curing accelerator in a weight ratio of 3:4, and the curing accelerator is tert-butyl peroxide.

[0055] Wherein, the modified polyisocyanate is mixed with polyester polyol, diisocyanate, stannous octoate and organic solvent at a mass fraction ratio of 1:2.5:0.2:0.1, and reacted at 60-90°C for 4 hours under nitrogen protection, Then evaporate the solvent under reduced pressure and cool to room temper...

Embodiment 2

[0063] A water-based wallpaper waterproof base film, comprising the following raw materials in parts by weight:

[0064] 35 parts of modified polyisocyanate,

[0065] 30 parts of long-chain dihydric alcohols,

[0066] Hydroxy-functionalized acrylate 40 parts,

[0067] 40 parts of active diluent,

[0068] 1.8 parts of catalyst,

[0069] 30 parts of silica powder,

[0070] 8 parts of silane coupling agent,

[0071] 0.5 parts of coagulant,

[0072] Leveling agent 1 part,

[0073] 1 part curing agent,

[0074] Wherein, the curing agent is composed of dibenzoyl peroxide and a curing accelerator in a weight ratio of 1:1, and the curing accelerator is an organosiloxane compound.

[0075] Wherein, the modified polyisocyanate is mixed with polyester polyol, diisocyanate, stannous octoate and organic solvent in a mass fraction ratio of 1.5:2.5:0.2:0.1, and reacted at 90°C for 8h under the protection of nitrogen, and then reduced The solvent was evaporated under pressure and coo...

Embodiment 3

[0083] A water-based wallpaper waterproof base film, comprising the following raw materials in parts by weight:

[0084] 30 parts of modified polyisocyanate,

[0085] 15 parts of long-chain dihydric alcohols,

[0086] Hydroxy-functionalized acrylate 30 parts,

[0087] Active diluent 25 parts,

[0088] Catalyst 0.2 part,

[0089] Silica powder 10 parts,

[0090] 4 parts of silane coupling agent,

[0091] 3.5 parts of coagulant,

[0092] Leveling agent 0.8 parts,

[0093] 2 parts curing agent,

[0094] Wherein, the curing agent is composed of dibenzoyl peroxide and a curing accelerator in a weight ratio of 3:4, and the curing accelerator is an organosiloxane compound.

[0095] Wherein, the modified polyisocyanate is mixed with polyester polyol, diisocyanate, stannous octoate and organic solvent in a mass fraction ratio of 1.5: 3: 0.5: 0.3, and reacted at 90°C for 8 hours under the protection of nitrogen, and then reduced The solvent was evaporated under pressure and coo...

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Abstract

The invention relates to the technical field of building materials, in particular to a water-based waterproof base film for wallpaper and a preparation method of the water-based waterproof base film. The waterproof base film is prepared by modified polyisocyanate, long-chain dihydric alcohol, hydroxyl functional acrylate, reactive diluent, catalyst, silica powder, silane coupling agent, flocculant, flatting agent and curing agent. The waterproof base film has the advantages that the base film is a water-based system, environment pollution caused by harmful substances such as VOC is avoided, the volume concentration of the base film is close to critical volume concentration, and the base film formed after drying is good in waterproof performance, good in breathability, high in weather resistance, high in impact resistance, high in tear resistance, less prone to blistering, high in adhesive force, high in acid-base resistance and corrosion resistance, less prone to damage and free of blistering, cracking and spalling.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a water-based wallpaper waterproof base film and a preparation method thereof. Background technique [0002] The base film is a wall treatment material with anti-alkali, moisture-proof, and mildew-proof functions. It can effectively prevent the moisture and alkaline substances from the construction base surface from seeping out, and avoid damaging the wall decoration materials: such as wallpaper, paint layer, Plywood, decorative boards have damp, mildew and blackening and other adverse damages. However, as there are more and more problems in today's buildings, the problems of cracks and water seepage are becoming more and more serious. Ordinary base film products cannot cope with such a harsh wall environment, which greatly shortens the use of wall decoration materials. life. [0003] There are also some materials with waterproof function on the market, but these mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D5/08C08G18/67C08G18/42C08G18/44
CPCC08G18/4202C08G18/672C09D5/08C09D175/14C08G18/44C08G18/42
Inventor 张小琼陆勇新刘亮
Owner GUANGDONG YULAN GRP
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