Unlock instant, AI-driven research and patent intelligence for your innovation.

Composite primer with high storage stability and high adhesion water property and preparation method thereof

A primer, water-based bentonite technology, applied in primers, coatings and other directions, can solve the problems of permeability, poor adhesion, poor storage stability of primers, and increased water permeability, etc., to improve storage stability and prevent powder. Settling and preventing the effect of stabilizing the system

Active Publication Date: 2022-06-07
广东自然涂化工有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many kinds of potassium silicate solutions, according to the modulus, there are 2.0, 2.4, 2.85, 3.0, 4.0 and other moduli (the modulus of potassium silicate is silicon dioxide (SiO 2 ) and potassium oxide (K 2 O) molar ratio), although high modulus potassium silicate is better in terms of film-forming properties, water resistance, alkali resistance, etc., but with the increase of modulus, its water solubility is lower, and its stability becomes worse. Poor resistance and adhesion, high water permeability
Potassium silicate solution with low modulus has poor water resistance and alkali resistance
Although the primer used to strengthen the putty layer in the prior art contains potassium silicate, the storage stability of the primer is poor. When it is used to reinforce the putty layer, the adhesion, water resistance, and alkali resistance are often difficult to meet the requirements.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Composite primer with high storage stability and high adhesion water property and preparation method thereof
  • Composite primer with high storage stability and high adhesion water property and preparation method thereof
  • Composite primer with high storage stability and high adhesion water property and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0049] Example: Preparation of Composite Primer

[0050] The composite primer components of Examples 1-3 and Comparative Examples 1-3 are shown in Table 1.

[0051] Table 1

[0052]

[0053]

[0054]

[0055] The preparation method of the composite primer of above-mentioned embodiment 1-3, comparative example 1-3, comprises the following steps:

[0056] PE6200 wetting agent, SPS dispersant, 0.3% CF-246 defoamer, and 250HBR cellulose were put into 21% water to disperse for 15 minutes until there were no particles; R996 titanium dioxide, JF-700 heavy calcium carbonate and nano-zinc oxide mildew inhibitor were put into The rotating speed is adjusted to 1200 rpm and dispersed for 20 minutes; then the remaining components are added, stirred and dispersed evenly to prepare a composite primer.

[0057] The storage stability of the composite primers of the above Examples 1-3 and Comparative Examples 1-3 was tested, and the results are shown in Table 2.

[0058] Table 2 ...

Embodiment 7

[0086] Compared with Example 6, Example 7 added DL-398 water-based bentonite, and the leveling property of the composite primer prepared in Example 7 was better during coating, and the results were as follows. figure 1 shown.

[0087] figure 1 The leveling effect diagram in the coating process of the composite primer prepared in Example 6 and Example 7 of the present invention, figure 1 In (a) is the leveling effect figure in the composite primer coating process prepared by embodiment 6, figure 1 In (b) the leveling effect diagram of the composite primer prepared in Example 7 during the coating process. from figure 1 It can be seen that the leveling property of the composite primer prepared in Example 7 is better when coating, indicating that the storage stability of the composite primer prepared in Example 7 is better than the storage stability of the composite primer prepared in Example 6. stability.

Embodiment 8

[0088] Examples 8 and 9 show that the addition of DL-398 water-based bentonite is helpful to improve the storage stability of the composite primer, and the viscosity stability is significantly improved, but when the addition amount is 0.3%, the composite primer has a slight open can. The tendency of tofu formation, need to stir before use to restore fluidity, so the dosage of DL-398 water-based bentonite should not be higher than 0.3%.

[0089] Comparative Examples 9 and 10 show that the performance of 2.0 modulus potassium silicate in the composite primer system of the present invention is not significantly different from that of 2.4 modulus potassium silicate.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of coatings, and discloses a composite primer with high storage stability and high adhesion water and a preparation method thereof. The composite primer comprises potassium silicate, styrene-acrylic emulsion and water. The modulus of the potassium silicate is less than or equal to 2.4, and the mass fraction of the potassium silicate is greater than 4.4% and less than 6.0%. According to the composite primer disclosed by the invention, the potassium silicate with low modulus (the modulus is less than or equal to 2.4) is compounded with the styrene-acrylic emulsion, and the mass fraction of the potassium silicate in the composite primer is greater than 4.4% and less than 6.0%; the low-modulus potassium silicate can rapidly permeate into a putty layer to react with soluble calcium and magnesium ions in pores of cement putty to form insoluble calcium silicate and magnesium silicate, the pores of the cement putty are sealed and hardened to form a whole, the putty layer is sealed by the potassium silicate and styrene-acrylic emulsion, adhesive force and water resistance are effectively improved, and meanwhile, the low-modulus potassium silicate is added into the putty layer to form a waterproof coating. The storage stability of the composite primer is also improved.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a composite primer with high storage stability and high water adhesion and a preparation method thereof. Background technique [0002] At present, the primer used for the putty layer with short construction period and no maintenance often leads to poor adhesion of the putty layer due to the poor permeability of the primer and the inability to quickly reinforce it. The film-forming substance of water-based primers sold on the market is basically a resin emulsion, and its film performance is directly related to the volatilization of the film-forming aid. When the film-forming aid is not completely volatilized (≥7 days), the coating film is in a soft state The state, the strength is insufficient, the effect of reinforcing the putty layer cannot be achieved, and the putty layer is easily pulled up and damaged. [0003] In order to meet the requirements of engineering co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09D125/14C09D7/61C09D5/00
CPCC09D125/14C09D7/61C09D5/002C08K3/34C08K3/346
Inventor 玉可瞻伍慧燕冯家洪
Owner 广东自然涂化工有限公司