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Super-strong water-resistant alkali-resistant anti-masking tape tearing transparent primer and preparation method thereof

A technology of transparent primer and textured paper, applied in the direction of primer and coating, which can solve the problems of loss of building support, prolonged construction period, tearing of primer, etc., and improve the tear resistance of textured paper. , Reduce the peeling off of the primer paint film and improve the shielding effect

Inactive Publication Date: 2021-02-09
三棵树(上海)新材料研究有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon dioxide dissolved in moist water can produce carbonic acid, which has a strong corrosion effect on steel bars, causing the strength of steel bars to drop sharply, and eventually loses its supporting effect on the entire building, bringing great hidden dangers to the building
Although the current exterior wall primers have a certain alkali resistance, this also requires a certain curing time for the base layer (generally, the pH value of the base layer is ≤ 10, and the moisture content of the base layer is ≤ 10%) before it can be effective after construction. There is a contradiction between the construction time and the drying and maintenance time of the grassroots
For example, CN201410747744.X patent discloses an environmentally friendly anti-alkali primer, which not only has high permeability, but also has high-efficiency antibacterial and anti-mildew properties, strong anti-alkali and purification properties, and also has low odor, strong anti-mildew and excellent anti-alkali properties. performance, but the disadvantage of this patented technology is that it needs to maintain the base for a certain period of time, and the construction can only be carried out when the pH value of the base is ≤ 10 and the moisture content of the base is ≤ 10%, which will lead to the extension of the construction period and increase the cost of all aspects
In addition, since most of the exterior wall projects now require lines and textured paper, the conventional primer has strong adhesion to the textured paper, which often causes part of the primer to tear

Method used

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  • Super-strong water-resistant alkali-resistant anti-masking tape tearing transparent primer and preparation method thereof
  • Super-strong water-resistant alkali-resistant anti-masking tape tearing transparent primer and preparation method thereof
  • Super-strong water-resistant alkali-resistant anti-masking tape tearing transparent primer and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0027] A method for preparing a super water-resistant, alkali-resistant and anti-masking paper peel-off transparent primer, the specific steps are as follows:

[0028] Step S1: First add water to the disperser, start the disperser, control the speed at 400-500 rpm, slowly add defoamer, bactericide, antifungal agent, propylene glycol, pH regulator in order, and then Disperse for 5-10 minutes until evenly mixed;

[0029] Step S2: Add epoxy-modified acrylic resin emulsion, film-forming aids, and silicon-containing anti-sticking aids in order, and then disperse for 5-10 minutes until they are evenly mixed;

[0030] Step S3: Finally, a thickener is added until the target viscosity is reached, and the super water-resistant, alkali-resistant, anti-masking paper tear-off transparent primer is manufactured.

Embodiment 1

[0032] Embodiment 1 of the super water-resistant and alkali-resistant anti-masking paper peeling paint of the present invention, the components contained and the weight content of each component are:

[0033] Water 30%, defoamer 0.6%, bactericide: 0.4%, antifungal agent 0.3%, propylene glycol: 4%, PH regulator 0.2%, epoxy group modified acrylic resin emulsion 60%, film-forming aid 3.3 %, silicon-containing anti-adhesive additives 0.5%, thickener 0.7%.

[0034] First, add water into the tank according to the formula given in the above examples, start the disperser, control the speed at 450 rpm, slowly add defoamer, bactericide, antifungal agent, propylene glycol, and pH regulator in sequence, and finish adding Disperse for another 10 minutes until uniformly mixed; then, add epoxy group-modified acrylic resin emulsion, film-forming aids, silicon-containing anti-sticking additives in order, and disperse for 10 minutes until uniformly mixed; finally , add a thickener until the ta...

Embodiment 2

[0046] Embodiment 2 of the super water-resistant, alkali-resistant and anti-masking paper peel-off transparent primer of the present invention, the components contained and the weight content of each component are:

[0047] Water 35.55%, defoamer 0.5%, bactericide 0.3%, antifungal agent 0.2%, propylene glycol 3.5%, PH regulator 0.15%, epoxy group modified acrylic resin emulsion 55%, film-forming aid 3%, Silicone additive 0.8%, thickener 1%.

[0048]First, add water into the tank according to the formula given in the above examples, start the disperser, control the speed at 500 rpm, slowly add defoamer, bactericide, antifungal agent, propylene glycol, and pH regulator in order, and finish adding Disperse for another 8 minutes until uniformly mixed; then, add epoxy group-modified acrylic resin emulsion, film-forming aids, and silicon-containing anti-adhesive additives in order, and disperse for 8 minutes until uniformly mixed; finally, Thickener is added until the target viscos...

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PUM

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Abstract

The invention relates to a super-strong water-resistant alkali-resistant anti-masking tape tearing transparent primer and a preparation method thereof. The super-strong water-resistant alkali-resistant anti-masking tape tearing transparent primer comprises 50-60% of an epoxy group modified acrylic resin emulsion and 0.5-1.0% of a silicon-containing anti-sticking auxiliary agent. The transparent primer has super-strong adhesive force and water and alkali resistance due to the addition of the epoxy group modified acrylic resin emulsion, so that the transparent primer disclosed by the invention can play a good role in shielding alkaline substances in new cement wall surfaces and mortar wall surfaces. The transparent primer can be constructed only under the conditions that the PH value (alkalinity) of a cement base layer is less than or equal to 13 and the water content of the base layer is less than or equal to 40%, the flooding and saline-alkali resistance of the transparent primer is not affected, and then the construction period of an engineering project site is greatly shortened. According to the transparent primer, due to the fact that the silicon-containing anti-sticking auxiliary agent can reduce the bonding force of a self-adhesive sticker to the primer, the situation that the masking tape tears a transparent primer film and a putty layer is reduced, and the defects in theprior art are overcome.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a super water-resistant, alkali-resistant and anti-masking paper tear-off transparent primer and a preparation method thereof. Background technique [0002] The process of standard exterior wall paint construction is generally the first step is the primer, the second step is the middle coat and top coat, and the third step is the finish varnish. With the improvement of the decorative performance of exterior wall coatings on the market, people are paying more and more attention to topcoats and finishing varnishes, while ignoring the important role played by primers in the entire coating. The topcoat and finish varnish in the exterior wall coating system not only have to withstand the test of wind, rain and sun exposure in the external natural environment, but also be eroded by alkaline substances from the building base. The primer, as the first layer of the whole system, is in d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D7/63C09D7/40
CPCC09D5/002C09D133/00C09D7/40C09D7/63C08K5/053
Inventor 周金华陈剑伟陈伟明林昌庆
Owner 三棵树(上海)新材料研究有限公司