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Plant polyenol modified zinc-rich coating and preparation method thereof

A plant polyenol modification technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of large molecular distance, low corrosion resistance, and low compactness, and achieve strong hydrophobicity and anti-corrosion properties. Good sag performance and short drying time

Inactive Publication Date: 2021-09-21
常熟耐素生物材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The active hydrogen on the primary amine and secondary amine at the end of the polyamide is less active and reacts slowly with the epoxy emulsion. The construction and curing are greatly affected by the ambient temperature and humidity, especially in winter <5°C, and the drying is very slow, which seriously affects the coating efficiency. , development and application are limited
In addition, due to the large molecular distance between the amino groups at both ends of the polyamide curing agent, the density after curing is small, and the compactness after film formation is low, so the corrosion resistance is not high.

Method used

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  • Plant polyenol modified zinc-rich coating and preparation method thereof
  • Plant polyenol modified zinc-rich coating and preparation method thereof
  • Plant polyenol modified zinc-rich coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 The recipe of the component A is shown in Table 1:

[0031] Table 1

[0032] Serial number name weight 1 Plant polynylphenol modified curing agent Seven copies 2 Solvent 6.4 copies 3 Wetting dispersant 0.6 copies 4 Organic land 1 copy 5 Zinc powder 500 mesh 75 copies 6 Zinc powder 800 mesh 8 copies 7 Talp powder 1000 mesh 2 copies

[0033] A component preparation method:

[0034] 1, 2, 3, 4 first press the mix. It was 20 minutes at 800-1000 rpm, and 5, 6, 7 were sequentially inserted in a stirred state, and then stirred at 2500 rpm for 30 minutes, dispersed to a fineness of less than 40 μm. .

[0035] The formulation of the B component is shown in Table 2:

[0036] Table 2

[0037] Serial number name weight 1 Waterborne epoxy emulsion 90 copies 2 D 0.6 copies 3 Antifoaming agent 0.4 copies 4 Deionized water 9 copies

[0038] B component preparation method:

[0039] 2, 3...

Embodiment 2

[0041] Example 2 The recipe of the A component is shown in Table 3:

[0042] table 3

[0043] Serial number name weight 1 Plant polynylphenol modified curing agent 5 copies 2 Solvent 6.4 copies 3 Wetting dispersant 0.6 copies 4 Organic land 75 copies 5 Zinc powder 500 mesh 10 copies 6 Zinc powder 800 mesh 1 copy 7 Talp powder 1000 mesh 2 copies

[0044] A component preparation method:

[0045] 1, 2, 3, 4 first press the mix. It was 20 minutes at 800-1000 rpm, and 5, 6, 7 were sequentially inserted in a stirred state, and then stirred at 2500 rpm for 30 minutes, dispersed to a fineness of less than 40 μm.

[0046] The formulation of the B component is shown in Table 4:

[0047] Table 4

[0048] Serial number name weight 1 Waterborne epoxy emulsion 90 copies 2 D 0.6 copies 3 Antifoaming agent 0.4 copies 4 Deionized water 9 copies

[0049] B component preparation method:

[0050] 2, 3, 4 w...

Embodiment 3

[0052] Example 3 The recipe of the component A is shown in Table 5:

[0053] table 5

[0054] Serial number name weight 1 Plant polynylphenol modified curing agent Seven copies 2 Solvent 6.4 copies 3 Wetting dispersant 0.6 copies 4 Organic land 45 copies 5 Zinc powder 500 mesh 38 copies 6 Zinc powder 800 mesh 1 copy 7 Talp powder 1000 mesh 2 copies

[0055] A component preparation method:

[0056] 1, 2, 3, 4 first press the mix. It was 20 minutes at 800-1000 rpm, and 5, 6, 7 were sequentially inserted in a stirred state, and then stirred at 2500 rpm for 30 minutes, dispersed to a fineness of less than 40 μm.

[0057] The formulation of the B component is shown in Table 6:

[0058] Table 6

[0059] Serial number name weight 1 Waterborne epoxy emulsion 90 copies 2 D 0.6 copies 3 Antifoaming agent 0.4 copies 4 Deionized water 9 copies

[0060] B component preparation method:

[0061] 2, 3,...

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Abstract

The invention discloses a plant polyenol modified zinc-rich coating which is prepared from a component A and a component B according to a ratio of (3-3.2): 1, and is characterized in that the component A comprises the following components in parts by weight: 5-10 parts of a plant polyenol modified curing agent, 5-10 parts of a cosolvent, 0.2-0.8 part of wetting dispersant, 0.5-1 part of organic soil, 40-70 parts of 500-mesh zinc powder, 5-40 parts of 800-mesh zinc powder, and 1-2 parts of talcum powder; the component B is prepared from the following components in parts by weight: 80-93 parts of water-borne epoxy resin emulsion, 0.2-0.6 part of a wetting agent, 0.2-0.4 part of a defoaming agent, and 6-10 parts of deionized water. The invention also discloses a preparation method thereof. The plant polyenol modified curing agent and the zinc powder are compounded according to a certain proportion and then subjected to component adjustment, and the prepared plant polyenol zinc-rich coating is short in drying time, high in hardness, capable of resisting salt mist for 2000 h, intact in surface and good in processability.

Description

Technical field [0001] The present invention relates to the field of aqueous anticorrosive coatings, and more particularly to a plant polylynyphenol modified zinc coating and a preparation method thereof. Background technique [0002] Traditional industrial coatings contain a large number of organic solvents, solvents volatilize during construction and drying, which not only seriously pollutes the environment and harms human health, but also has a great waste of resources. Waterborne coatings have a poisonous, tasteless, low price, rich resources, etc., which can greatly reduce the pollution caused by the organic solvent in the coating, and use water as a solvent, which can improve the coating in storage, transportation and construction. Safety. At present, the aqueous epoxy zinc coating used in the field of red-proof coating is mainly water is a diluent, which is composed of a polyamide water-based dispersion cured agent, zinc powder, aqueous epoxy emulsion, and a color fat. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10C09D7/61C09D7/65C08G59/62
CPCC09D163/00C09D5/106C09D7/61C09D7/65C08G59/623C08G2150/90C08K2003/0893C08K2201/003C08L71/00C08K3/08C08K3/34
Inventor 刘斌戴志成张文鹏蔡秀刚王佳
Owner 常熟耐素生物材料科技有限公司