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A solvent-free epoxy weather-resistant coating for outdoor weighing apparatus and its preparation process

A preparation process, solvent-free technology, applied in epoxy resin coatings, anti-corrosion coatings, reflective/signal coatings, etc., can solve the problems of poor weather resistance, restrict the popularization and application of solvent-free epoxy coatings, etc., to extend the drying time, excellent Number of surface atoms, effect of excellent physical and mechanical properties

Active Publication Date: 2022-01-28
JIANGSU LANLING POLYMER MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, although the mainstream solvent-free epoxy coatings in the market have low VOCS performance, their weather resistance is poor, so they are mainly suitable for indoor application environments, which restricts the promotion and application of solvent-free epoxy coatings outdoors.

Method used

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  • A solvent-free epoxy weather-resistant coating for outdoor weighing apparatus and its preparation process
  • A solvent-free epoxy weather-resistant coating for outdoor weighing apparatus and its preparation process
  • A solvent-free epoxy weather-resistant coating for outdoor weighing apparatus and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step 1, weigh each component according to the weight percentage, hydrogenated bisphenol A epoxy resin, 17.47%; reactive diluent, 5.24%; auxiliary agent A, 1.21%; auxiliary agent B, 1.92%; pigment, 23.58%; filler, 37.04%; thickener, 0.87%; curing agent, 12.67%. Wherein the hydrogenated bisphenol A type epoxy resin is divided into two parts, the first hydrogenated bisphenol A type epoxy resin accounts for 95% of the hydrogenated bisphenol A type epoxy resin total amount, the second hydrogenated bisphenol A type epoxy resin The resin accounts for 5% of the total hydrogenated bisphenol A type epoxy resin.

[0032] Step 2: Put the first part of hydrogenated bisphenol A epoxy resin and reactive diluent into the dispersing tank and stir at 2500r / min at a high speed. After dispersing for 10 minutes, reduce the speed to 800r / min. While stirring, put it into the preparation in proportion Good additive A, increase the speed to 2000r / min, stir fully for 15min, reduce the speed to ...

Embodiment 2

[0036] The difference between embodiment 2 and embodiment 1 is that

[0037] Step 1, weigh each component according to the weight percentage, hydrogenated bisphenol A epoxy resin, 22.13%; reactive diluent, 6.64%; auxiliary agent A, 1.2%; auxiliary agent B, 1.88%; pigment, 22.98%; filler, 29.43%; thickener, 0.85%; curing agent, 14.89%. Among them, the hydrogenated bisphenol A epoxy resin is divided into two parts, the first hydrogenated bisphenol A epoxy resin accounts for 93% of the hydrogenated bisphenol A epoxy resin, and the second hydrogenated bisphenol A epoxy resin The resin accounts for 7% of the total hydrogenated bisphenol A type epoxy resin.

[0038] Step 4, mix components A and B evenly in a ratio of 5.2:1 before use.

Embodiment 3

[0040] The difference between embodiment 3 and embodiment 1 is that

[0041]Step 1, weigh each component according to the weight percentage, hydrogenated bisphenol A type epoxy resin, 23.63%; reactive diluent, 7.09%; auxiliary agent A, 1.18%; auxiliary agent B, 1.86%; pigment, 22.78%; filler, 27.01%; thickener, 0.84%; curing agent, 15.61%. Among them, the hydrogenated bisphenol A epoxy resin is divided into two parts, the first hydrogenated bisphenol A epoxy resin accounts for 93% of the hydrogenated bisphenol A epoxy resin, and the second hydrogenated bisphenol A epoxy resin The resin accounts for 7% of the total hydrogenated bisphenol A type epoxy resin.

[0042] Step 4, before use, mix components A and B evenly in a ratio of 6.5:1.

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Abstract

The invention relates to a solvent-free epoxy weather-resistant coating for outdoor scales and a preparation process, which has the following components in weight percent: hydrogenated bisphenol A epoxy resin, 15% to 30%; active diluent, 5% ~8%; Auxiliary A, 0.1%~1.5%; Auxiliary B, 0.2%~2%; Pigment, 20%~30%; Filler, 15%~30%; Thickener, 0.5%~2%; Curing agent, 15% to 20%. The invention provides a solvent-free epoxy weather-resistant coating for outdoor scales, which can meet the various requirements of the current society for metal coatings, and not only has good mechanical properties, acid and alkali resistance, low VOC, low heavy metal content and other basic Requirements, but also has good weather resistance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a solvent-free epoxy weather-resistant coating for outdoor scales and a preparation process. Background technique [0002] An outdoor weighing instrument is a measuring instrument used outdoors to determine the mass of an object by the gravity acting on it. [0003] Outdoor weighing instruments usually use polyurethane topcoat or polyurethane bottom-surface-integrated coating. Although polyurethane coatings have excellent weather resistance, the content of VOCS in polyurethane coatings is high, which cannot meet the country's development trend of gradually reducing VOCS emissions; at the same time, compared with outdoor weighing instruments For the application, the hardness, wear resistance, medium resistance and other properties need to be improved and improved. [0004] Solvent-free coatings, especially solvent-free epoxy coatings, have gradually entered the field of outdoor ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/43C09D5/33C09D7/61
CPCC09D163/00C09D5/08C09D7/43C09D5/004C09D7/61C08K2003/3045C08L2201/08C08K3/30C08K3/36C08K13/02
Inventor 张斌刘斌陈建刚华忠梁马运立钟江兴唐松
Owner JIANGSU LANLING POLYMER MATERIAL CO LTD