Coiled material coating and preparation method thereof

A coil coating and phenolic resin technology, applied in the field of coatings, can solve problems such as corrosion, whitening by high-temperature cooking, and substandard plume film, and achieve the effects of excellent comprehensive performance, strong impact resistance, and good flexibility

Inactive Publication Date: 2022-03-04
江苏扬瑞新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Existing epoxy resin-based coil coating products are used in the process of preparing easy-open ends, and it is difficult to achieve a good balance between processing flexibility, high-temperature cooking resistance, corrosion resistance and feather film
In the molding process of the existing easy-open end, it is necessary to ensure sufficient processing flexibility, but it is based on the premise of sacrificing the high-temperature cooking characteristics of the product; if the processability can meet the requirements of molding processing, high-temperature cooking whitening will occur And the phenomenon that the plume film does not meet the standard; if the cross-linking density is increased, high temperature cooking resistance and the plume film can be guaranteed to meet the standard, but there will be abrasions and corrosion during processing
[0010] However, there is no coil coating that has comprehensive excellent properties such as good adhesion, strong impact resistance, water boiling resistance, acid resistance, and small feather film at the same time.

Method used

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  • Coiled material coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A coil coating, comprising the following components in parts by weight: 60 parts of epoxy solution, 0.1 part of phosphoric acid, 5 parts of bisphenol A phenolic resin, 5 parts of tert-butylphenol / bisphenol A phenolic resin, height 1 part of alkyl etherified benzomelamine resin, 0.01 part of defoamer BYK-054, 0.1 part of leveling agent BYK-392, 0.6 part of carnauba wax slurry, 6 parts of propylene glycol methyl ether acetate, 1 part of toning phenolic PR307 and adhesion promoter LTW 2 parts.

[0042] The coil coating preparation process is as follows: heat the epoxy solution to 100°C, add phosphoric acid, and keep warm for 1 hour after adding; then add bisphenol A phenolic resin and tert-butylphenol / bisphenol A mixed modified phenolic resin, and keep warm 1 hour; after the heat preservation is over, lower the temperature to below 40°C, first add highly alkyl etherified benzomelamine resin, stir well and then add the remaining materials, turn on the high-speed disperser o...

Embodiment 2

[0044]A coil coating, comprising the following components in parts by weight: 70 parts of epoxy liquid, 1 part of phosphoric acid, 10 parts of bisphenol A phenolic resin, 10 parts of tert-butylphenol / bisphenol A phenolic resin, height 5 parts of alkyl etherified benzomelamine resin, 0.3 parts of defoamer BYK-054, 1 part of leveling agent BYK-392, 3 parts of PE wax, 20 parts of ethylene glycol butyl ether, 5 parts of toning phenolic PR307 and attached Focus on accelerator LTW 5 parts.

[0045] The coil coating preparation process is the same as in Example 1.

Embodiment 3

[0047] A coil coating, comprising the following components in parts by weight: 65 parts of epoxy liquid, 0.5 part of phosphoric acid, 8 parts of bisphenol A phenolic resin, 8 parts of tert-butylphenol / bisphenol A phenolic resin, height 4 parts of alkyl etherified benzomelamine resin, 0.2 part of defoamer BYK-054, 0.5 part of leveling agent BYK-392, 1.5 parts of polytetrafluoroethylene wax, 15 parts of propylene glycol methyl ether acetate, toning phenolic PR307 3 4 parts and adhesion promoter LTW 4 parts.

[0048] The coil coating preparation process is the same as in Example 1.

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Abstract

The invention relates to the technical field of coatings, in particular to a coil coating and a preparation method thereof. The coiled material coating is prepared from the following components: epoxy liquid, an acid catalyst, bisphenol A phenolic resin, tert-butyl phenol / bisphenol A mixed modified phenolic resin, highly alkyl etherified benzomelamine resin, a defoaming agent, a flatting agent, wax, a solvent, toning phenolic aldehyde and an adhesion promoter, the coating has the advantages of being good in adhesive force, high in impact resistance, resistant to high-temperature boiling, resistant to acid and small in feather film.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a coil coating and a preparation method thereof. Background technique [0002] Pre-coated metal coil is a composite sheet that is sold in rolls or sheets after the coiled metal sheet is first coated with paint or pasted with a polymer film. Users can process it into various parts or products, and after assembling or installing, it is a finished product without painting. The "pre-painting" process can largely avoid the defects caused by the dead corners of the post-painting edges, and obtain a good coating quality. [0003] The painted metal sheet is continuously passed through the oven to cure the paint film. The utilization rate of the furnace capacity is significantly higher than that of the finished product or parts after baking and curing. At the same time, the oven exhaust gas containing organic solvents generated during the baking process can be collected and incinerated....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D163/04C09D161/14C09D161/32
CPCC09D163/00C08L63/04C08L61/14C08L61/32
Inventor 徐杨王凯华周旭蒋磊
Owner 江苏扬瑞新材料有限公司
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