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Polyvinylidene chloride rust-turning rustproof water-based paint and preparation technology thereof

A polyvinylidene chloride, water-based coating technology, applied in anti-corrosion coatings, coatings and other directions, can solve problems such as affecting the continuity and integrity of the coating film, unfavorable rust-turning coating formulation, lack of foreign matter tolerance, etc., and achieve tight wrapping performance. , rich in raw materials, easy to manufacture and use

Active Publication Date: 2019-03-22
淄博菲克氟碳材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] When the inventors studied PVDC metal coatings, they found that whether it is foreign metal-specific or domestic PVDC emulsions, the coating films produced have high chemical resistance, high adhesion, and high barrier properties. At the same time, the emulsions contain Cl - These characteristics are not conducive to the preparation of rust-reversing coatings. Rust-reversing coatings require high encapsulation of rust-reversing agents, inhibitors, and rust substances. And compatibility, the continuity and integrity of the coating film cannot be affected by the presence of these substances, but it is found in the test that pure PVDC emulsion film formation often causes microscopic defects due to the entry of foreign matter
This explains why PVDC emulsions have very good barrier properties when applied to packaging plastic films, but not to metal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~5

[0037] See Table 1 for the proportioning by weight of materials in Examples 1-5.

[0038] Table 1

[0039] .

[0040] Wherein the modified emulsion in Example 1 is a fluorine-modified acrylic emulsion, the modified emulsion in Example 2 is a silicone-modified acrylic emulsion, and the modified emulsion in Example 3 is a fluorosilicon-modified acrylic emulsion. The modified emulsion in 4 is a styrene-acrylic emulsion, and the modified emulsion in Example 5 is a mixture of silicone-modified acrylic emulsion and fluorine-modified acrylic emulsion in a mass ratio of 1:5.

[0041] Process of each embodiment

[0042] Weighing materials and preparing materials;

[0043] Preparation of rust-reducing agent: Dissolve glycine and alanine in deionized water in a beaker;

[0044] Preparation of chloride ion inhibitor: Dissolve polyacrylic acid, thiourea, and ethylenethiourea in deionized water in a beaker;

[0045] Coating preparation: use a beaker with a mechanical stirrer, add pol...

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PUM

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Abstract

The invention relates to a polyvinylidene chloride rust-turning rustproof water-based paint and a preparation technology thereof and belongs to the technical field of chemical coatings. The polyvinylidene chloride rust-turning rustproof water-based paint is characterized by comprising the following components in parts by weight: 50-75 parts of polyvinylidene chloride emulsion, 3-15 parts of modified emulsion, 2.0-5.0 parts of auxiliaries, 0.1-0.5 part of organic silicon flatting agent, 0.1-0.5 part of mineral oil de-foaming agent, 3.0-20 parts of rust-turning agent and 0.5-2.0 parts of chloride ion inhibitor. The processing steps are as follows: adding polyvinylidene chloride emulsion, modified emulsion and auxiliaries at mass ratio into a preparation container and stirring; adding rust-turning agent solution and chloride ion inhibitor solution; continuing to stir after solution is fully added, and then filtering. The invention provides a physically modified universal PVDC emulsion anda technical method. The modified emulsion completely has the basic performance of metallic paint, namely, excellent rustproof performance, and is especially suitable for preparing a rust-turning rustproof water-based paint.

Description

technical field [0001] The invention discloses a polyvinylidene chloride rust-converting and antirust water-based paint and a preparation process thereof, which belong to the technical field of chemical paints. Background technique [0002] Polyvinylidene chloride (PVDC) emulsion is obtained by copolymerizing vinylidene chloride (VDC) with a small amount (15% to 20%) of vinyl chloride, acrylonitrile, acrylate, methacrylate, styrene and other monomers to obtain two Primary or ternary copolymers can be used as coatings, adhesives, etc. [0003] PVDC is a kind of plastic with high barrier properties, strong toughness, low-temperature heat sealing, good heat shrinkage and chemical stability, especially its moisture resistance, oxygen resistance, acid resistance, alkali resistance and oil immersion resistance. And resistance to a variety of chemical solvents and other properties, it has been widely used in the packaging of food, medicine, and military products for 50 years. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/16C09D5/08C09D7/63C09D7/65
CPCC08K2201/014C08L2205/03C08L2205/035C09D5/08C09D127/16C09D7/63C09D7/65C08L33/16C08L91/00C08L33/02C08K5/00C08K5/103C08K5/175C08K5/405C08L33/14C08L25/14
Inventor 王健
Owner 淄博菲克氟碳材料技术有限公司
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