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A kind of zinc silicate shop primer and its preparation method and construction method

A technology of shop primer and construction method, which is applied in the field of coatings and paints, can solve the problems of early failure of the coating, easy deformation of the steel plate, and the pretreatment of the steel plate cannot reach such a high level of sand washing, and achieves fast drying performance and product performance. Satisfying effect

Active Publication Date: 2015-08-05
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

[0007] However, in actual on-site construction, there are many occasions where steel plate pretreatment cannot achieve such a high level of sand washing.
For example, when performing surface treatment on many thin-plate parts, generally only the surface can be slightly sanded, otherwise the steel plate is easy to deform; and some thin-plate parts will have a layer of oil on the surface during storage and transportation. This kind of thin-plate parts after surface treatment Can't even remove oil stains
At this time, if the general zinc silicate shop primer is applied during construction, the paint film will become warped and have poor adhesion after drying, resulting in early failure of the coating.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Dissolve 0.53 kg of polyvinyl butyral resin of model B05HX produced by Changzhou Songbai Chemical Co., Ltd. in 5.43 kg of isopropanol solvent, and add 3.78 kg of MP200 hydrocarbon liquid petroleum resin from Shanghai Ousheng Chemical Industry Co., Ltd. and 19.67kg of talcum powder, then add 35.33kg of zinc powder, disperse evenly through high-speed shearing, and prepare a paint, which is the base material mentioned in the text.

[0032] Prepare tetraethyl orthosilicate hydrolyzate with 35% mass fraction of tetraethyl orthosilicate and 75% degree of hydrolysis as a curing agent.

[0033]Use conventional pretreatment means to lightly sweep the cold-rolled plate, that is, low surface treatment to St2 level. Mix the zinc silicate shop primer base material prepared above with the curing agent prepared above and 35.26 kg of tetraethyl orthosilicate hydrolyzate, stir evenly, and add diluent isopropanol to adjust to the construction viscosity (adding diluent How much, accordin...

Embodiment 2

[0038] Dissolve 1.58kg of polyvinyl butyral resin of type B03HX produced by Changzhou Songbai Chemical Co., Ltd. in 2.73kg of n-butanol solvent, and add 2.45kg of MP200 hydrocarbon liquid petroleum resin from Shanghai Ousheng Chemical Industry Co., Ltd. and 14.33kg of kaolin, then add 40.67kg of zinc powder, disperse evenly through high-speed shearing, and prepare paint, which is the base material mentioned in the text.

[0039] Prepare tetraethyl orthosilicate hydrolyzate with a mass fraction of 30% and a degree of hydrolysis of 70% as a curing agent.

[0040] Use conventional pretreatment means to lightly sweep the cold-rolled plate, that is, low surface treatment to St2 level. Mix the zinc silicate shop primer base material prepared above with the curing agent prepared above and 38.24 kg of tetraethyl orthosilicate hydrolyzate, stir evenly, and add diluent n-butanol to adjust to the construction viscosity (adding diluent How much, according to the temperature, adjusted by ...

Embodiment 3

[0045] Dissolve 1.06kg of polyvinyl butyral resin of model B05SY produced by Changzhou Songbai Chemical Co., Ltd. in 4.07kg of isobutanol solvent, and add 3.12kg of MP200 hydrocarbon liquid petroleum resin from Shanghai Ousheng Chemical Co., Ltd. and 17kg of talcum powder, then add 38kg of zinc powder, disperse evenly through high-speed shearing, and prepare a paint, which is the base material mentioned in the text.

[0046] Prepare tetraethyl orthosilicate hydrolyzate with a mass fraction of 40% and a degree of hydrolysis of 80% as a curing agent.

[0047] Use conventional pretreatment means to lightly sweep the cold-rolled plate, that is, low surface treatment to St2 level. Mix the zinc silicate shop primer base material prepared above with the curing agent prepared above and 36.75 kg of tetraethyl orthosilicate hydrolyzate, stir evenly, and add diluent isobutanol to adjust the construction viscosity (adding diluent How much, according to the temperature, adjusted by the co...

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Abstract

The invention relates to the field of a coating paint, and provides a zinc silicate shop primer as well as a preparation method and a construction method thereof. The coating can be applied to a sheet material which is just subjected to low-surface treatment; the base stock of the product is formed by polyvinyl butyral resin, modified resin, zinc powder, packing and a solvent; and tetraethoxysilane hydrolysate is taken as a curing agent. The preparation method comprises the steps of dissolving the polyvinyl butyral resin into the solvent, adding the modified resin and the packing, adding the zinc powder, and blending to prepare the base stock of the paint by high-speed shearing and even dispersing; firstly, blending the base stock and the curing agent into the paint according to the ratio in construction; evenly stirring, and adjusting to the applicable viscosity with diluent, and then carrying out construction coating. The product solves the problem of over-high processing demands on the surface of the metal plate in the prior art when the zinc silicate shop primer is used.

Description

technical field [0001] The invention relates to a kind of coating paint, in particular to a zinc silicate shop primer which can be used on metal plates with only low surface treatment, and its preparation method and construction method. Background technique [0002] The birth of shop primer began in the late 1940s and early 1950s. The first developed variety is a PVB shop primer based on polyvinyl butyral, also known as phosphating primer. [0003] PVB shop primer has no adverse effect on the welding and cutting of steel, and it dries quickly. Its surface can be coated with various organic paints, and the price is relatively cheap, but the outdoor maintenance period is short (usually 3 months). The thermal processing damage area is large, and the potential resistance performance is poor. It is not suitable for the underwater part of the hull equipped with a cathodic protection system, so the application is limited. [0004] In order to make up for the shortage of PVB shop ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D7/12
Inventor 卞建华郑磊戴红艳
Owner SHANGHAI ZHENHUA HEAVY IND CHANGZHOU COATINGS CO LTD