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Organic-resin-free inorganic zinc silicate shop primer

A technology of inorganic zinc silicate and workshop primer, which is applied in the field of coatings, can solve the problems of low anti-sedimentation effect and high specificity of zinc powder, and achieve the effects of improving thickening effect, easy stirring evenly, and improving thixotropy

Active Publication Date: 2011-09-07
XIAMEN SUNRUI SHIP COATING
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high specificity of zinc powder, it is necessary to add anti-sedimentation agent to the shop primer. Generally, organic bentonite is used. Studies have shown that ultra-fine silica has little anti-settling effect on zinc powder.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0027] Example Preparation process: add fumed silica into the mixed solvent, disperse at high speed for 15 minutes, add liquid rheological additive, disperse evenly, add iron phosphorus powder and zinc powder, disperse at high speed until the fineness is less than 80 microns, and obtain formazan Components: Put ethyl silicate and absolute ethanol into the reaction kettle, heat and stir, add acidified water dropwise, and keep warm for 30 minutes to obtain component B. Inorganic zinc silicate shop primer can be prepared by mixing components A and B evenly at a weight ratio of 2:1. The liquid rheological additive is a polyhydroxy acid amide solution with a non-volatile content of 50%. Examples 1-3 Acidified water is prepared from sulfuric acid, hydrochloric acid and phosphoric acid respectively.

[0028] Table 2 is the formula of Examples 1-3, and the proportions are all mass ratios.

[0029] Table 2 Example 1-3 formula

[0030] Component A raw material name

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PUM

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Abstract

The invention discloses an organic-resin-free inorganic zinc silicate shop primer which is composed of a component A and a component B at a weight ratio of 2: 1. The component A comprises the following ingredients in parts by weight: 30 to 60 parts of zinc powder, 15 to 30 parts of ferro-phosphorus powder, 0.5 to 2 parts of gas phase silicon dioxide, 0.2 to 0.6 pat of liquid rheological agent, 5 to 15 part of isopropanol, 5 to 15 parts of methyl isobutyl ketone, and 2 to 8 parts of propylene glycol methyl ether. The component B comprises the following ingredients in parts by weight: 30 to 50 parts of ethyl silicate, 30 to 60 parts of anhydrous alcohol, and 3 to 6 parts of acidified water. The shop primer provided by the invention can improve the temperature tolerance and reduce the water absorptivity of varnish films, is compatible to ballast chamber paints, and meets the requirements listed in the PSPC (performance standard of protective coatings). The shop primer has good rheological effects, so as to prevent gelatination or sedimentation of the zinc slurry during 15-day storage at 50 DEG C. The steel plate coated with the shop primer produces less smoke during welding, so that the construction environment is improved.

Description

[0001] technical field [0002] The invention relates to a paint technology, in particular to an inorganic zinc silicate shop primer without organic resin. Background technique [0003] The shop primer was born in the early 1950s, and the successive products include zinc-free phosphating primer, epoxy zinc-rich paint, epoxy iron red shop primer, and inorganic zinc silicate shop primer. At present, inorganic zinc silicate shop primer is the main application variety. Inorganic zinc silicate shop primers are generally added with polyvinyl butyral or other resins as plasticizers, and the presence of these organic resins will inevitably affect its high temperature resistance. Due to the large proportion of zinc powder, it is necessary to add anti-sedimentation agent to the shop primer. Generally, organic bentonite is used. Studies have shown that ultra-fine silica has little anti-settling effect on zinc powder. [0004] The Chinese patent with the publication number CN1887985A ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/00
Inventor 苏雅丽蔡云露方大庆叶章基
Owner XIAMEN SUNRUI SHIP COATING
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