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Water-based inorganic zinc silicate shop primer and preparation method thereof

A technology of inorganic zinc silicate and shop primer, which is applied in the direction of primer, alkali metal silicate paint, coating, etc., and can solve the problem of affecting stackability, which depends on the quick drying and crosslinking of water-based inorganic zinc silicate primer Curing degree and other issues to achieve the effect of improving the wettability of the substrate

Inactive Publication Date: 2021-10-29
SHANGHAI ZHENHUA HEAVY IND CHANGZHOU COATINGS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, finger-touch or finger-drying can only test whether it will stick to the roller table or affect the stacking performance. To test whether it can withstand rain after offline, it depends on the quick-drying and cross-linking curing of the water-based inorganic zinc silicate primer. degree, it is a challenge

Method used

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  • Water-based inorganic zinc silicate shop primer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Take 80g of low-modulus potassium silicate with a modulus of 3.7, add 44.5ml of water to make a potassium silicate solution, then slowly add 41.6g of silica sol AJN830 dropwise in about 30 minutes, heat to 55°C, and continue stirring until translucent colloidal fluid.

[0027] (2) After adding the silica sol dropwise, after the solution is clarified, add 3.8g of silane coupling agent KH550 dropwise in about 20 minutes, continue stirring and heat at 55°C for 1 hour to prepare high modulus potassium silicate.

[0028] (3) Take 40g of high modulus potassium silicate, add 1.7g of styrene-butadiene emulsion, 0.21g of anti-settling agent, and 0.07g of defoamer under stirring at 35°C, and keep stirring for 15 minutes to obtain an emulsion, which is the base material component .

[0029] (4) Take 80g of zinc powder, 30g of ferrophosphorus powder, and 5g of feldspar powder, and mix them uniformly in a ball mill to obtain powder, which is the curing agent component.

[0030...

Embodiment 2

[0033] (1) Take 82.1g of low-modulus potassium silicate with a modulus of 3.7, add 67.5ml of water to make potassium silicate solution, slowly add 43g of silica sol AJN1430 dropwise in about 30 minutes, heat to 55°C, and continue stirring until translucent gel body fluid.

[0034] (2) After adding the silica sol dropwise, after the solution is clarified, add 4g of silane coupling agent KH540 dropwise in about 20 minutes, keep stirring and heat at 55°C for 1 hour to prepare high modulus potassium silicate.

[0035] (3) Take 50g of high modulus potassium silicate, add 3.72g of styrene-butadiene emulsion, 1.01g of anti-settling agent, and 0.41g of defoamer under stirring at 35°C, and keep stirring for 15min to obtain the emulsion, which is the base material component .

[0036] (4) Take 75g of zinc powder, 30g of ferrophosphorus powder, and 30g of feldspar powder, and mix them uniformly in a ball mill to obtain powder, which is the curing agent component.

[0037] (5) Take 50 g...

Embodiment 3

[0040] (1) Take 80g of low-modulus potassium silicate with a modulus of 3.7, add 45ml of water to make a potassium silicate solution, then slowly add 36.4g of silica sol AJN1430 dropwise in about 30 minutes, heat to 55°C, and continue stirring until translucent gel body fluid.

[0041] (2) After adding the silica sol dropwise, after the solution is clarified, add 4 g of silane coupling agent KH540 dropwise in about 20 minutes, keep stirring and heat at 55°C for 1 hour to prepare high modulus potassium silicate.

[0042] (3) Take 40g of high modulus potassium silicate, add 1.82g of styrene-acrylic emulsion, 0.52g of anti-settling agent, and 0.13g of defoamer under stirring at 35°C, and keep stirring for 15min to obtain the emulsion, which is the base material component .

[0043] (4) Take 45g of zinc powder, 25g of ferrophosphorus powder, and 5g of feldspar powder, and mix them uniformly in a ball mill to obtain powder, which is the curing agent component.

[0044] (5) Take 6...

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Abstract

The invention belongs to the field of marine coating, and particularly relates to a water-based inorganic zinc silicate workshop primer and a preparation method thereof. Potassium silicate with the modulus being 3.7 is adopted as a raw material, silica sol and a silane coupling agent are added to prepare high-modulus potassium silicate with the modulus being 6, then styrene-butadiene emulsion or styrene-acrylic emulsion is added to modify the high-modulus potassium silicate, and finally zinc powder, ferrophosphorus powder and feldspar powder are added to prepare the water-based inorganic zinc silicate shop primer. Various properties of the emulsion are researched by testing viscosity, solid content, modulus and storage stability of the emulsion, and appearance, initial water resistance, adhesive force, weather-proof protection period and the like of a coating film. The addition of the silica sol and the silane coupling agent improves the dryness, the early water resistance, the crosslinking curing degree and the adhesive force, and the addition of the styrene-butadiene emulsion or the styrene-acrylic emulsion greatly improves the substrate wettability, the flexibility and the adhesive force of a coating film.

Description

technical field [0001] The invention belongs to the field of marine coatings, in particular to a water-based inorganic zinc silicate shop primer and a preparation method thereof. Background technique [0002] Workshop primer, also known as steel pretreatment primer or maintenance primer, is a quick-drying primer that is sprayed on the metal surface on the workshop assembly line after steel (steel plate or section steel) has been sandblasted and derusted to prevent it from being damaged during processing, Corrosion occurs during assembly and other processes, thereby greatly reducing the workload of derusting when painting sections or berths. It has become an important work procedure for ships, marine engineering, bridges and heavy machinery and equipment that need to deal with large steel industries. [0003] Different from the usual paint coatings, the shop primer is a special temporary maintenance primer, and the particularity of construction on the automatic assembly line ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/04C09D7/61C09D7/63C09D7/65
CPCC09D1/04C09D7/61C09D7/63C09D7/65C09D5/002
Inventor 戴红艳成立鸿范晚秋
Owner SHANGHAI ZHENHUA HEAVY IND CHANGZHOU COATINGS CO LTD
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