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Water-based paint suitable for continuous production of pencils and preparation method thereof

A kind of water-based paint, water-based technology, applied in the direction of coating, polyurea/polyurethane coating, etc., can solve the problem of uneven paint surface, speed up the drying speed of water-based paint, and the gloss and adhesion of pencil paint film need to be improved, so as to eliminate Effects of adverse factors, good adhesion and gloss

Pending Publication Date: 2021-03-19
浙江贝斯特软化板有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the above drying aids are actually used, the drying speed of the water-based paint is obviously accelerated, but the surface of the paint is not smooth enough, and it is not easy to wrinkle. At the same time, the gloss and adhesion of the paint film on the pencil also need to be improved.

Method used

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  • Water-based paint suitable for continuous production of pencils and preparation method thereof
  • Water-based paint suitable for continuous production of pencils and preparation method thereof
  • Water-based paint suitable for continuous production of pencils and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A kind of water-based paint suitable for the continuous production of pencils, the preparation steps of the primer are: according to weight percentage, weigh 10 parts of polyurethane emulsion, 10 parts of water-based acrylic emulsion, 15 parts of water-based acrylic resin, 15 parts of deionized water, and mix uniformly and stir Minutes, then add 0.1 part of defoamer, 3 parts of film-forming aids, 0.5 part of diethanolamine, 10 parts of talcum powder, at a temperature of under stirring Minutes, first dissolve 0.01 part of dibutyltin dilaurate into 15 parts of 95% ethanol, and then add to the above mixture; then add 18 parts of water-based color paste, 2 parts of covering polymer, and stir minute. After mixing well, a primer is obtained.

[0041] The preparation steps of the topcoat are: according to weight percentage, weigh 10 parts of polyurethane emulsion, 10 parts of water-based acrylic emulsion, 15 parts of water-based acrylic resin, and 15 parts of deionized ...

Embodiment 2

[0058] Screening of drying aids

[0059] The preparation method of water-based paint is the same as in Example 1. Except the type of drying aid in the formula, the types and contents of other components are the same as in Comparative Example 3. The influence of different drying aids on the performance of pencil water-based paint is investigated. The results are as follows: table 3.

[0060] Table 3 Effects of different types of drying aids on the performance of water-based paints

[0061]

[0062]

[0063] It can be seen from the above table that dibutyltin dilaurate not only has obvious drying aid effect, but also has no adverse effect on adhesion and gloss, and its performance is obviously better than other drying aids.

Embodiment 3

[0065] The influence of ethanol concentration on the performance, the preparation method and content of the water-based paint are the same as in Comparative Example 3, and the influence of different concentrations of ethanol on the performance of the water-based paint is investigated, and the results are shown in Table 4.

[0066] The impact of table 4 ethanol concentration on the performance of water-based paint

[0067]

[0068] It can be seen from Table 4 that the higher the ethanol concentration is not the better, the surface drying time will be faster if the concentration is higher than 95%, but other properties will be reduced. Therefore, considering comprehensively, ethanol with a concentration of 95% is optimal.

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Abstract

The invention relates to a water-based paint suitable for continuous production of pencils and a preparation method thereof. According to the industrial production requirements of pencils, the basic formula of the water-based paint is improved, water-based resin is selected, water is used as a main solvent, a small amount of an environment-friendly cosolvent is added, no benzene series or ester solvent is contained, and a proper drying aid, coloring aid and brightening aid are selected, so that the quick-drying effects of 10s surface drying and 60s hard drying are achieved, and the requirements of existing pencil continuous production equipment on quick drying of the water-based paint can be completely met. Meanwhile, other adverse factors caused by additives such as a quick-drying aid tothe water-based paint are eliminated, so that the water-based paint formula disclosed by the invention not only realizes 10s surface drying, but also can achieve good adhesive force and glossiness.

Description

technical field [0001] The invention relates to the technical field of pencil paint, in particular to a water-based paint suitable for continuous production of pencils and a preparation method thereof. Background technique [0002] As a traditional writing tool, pencil has an irreplaceable position. In order to protect and decorate wooden pencils, it is necessary to coat the surface with paint. The production process of pencil coating includes: feeding: batches of pencils to be painted Placed in the hopper, the bottom of the hopper is equipped with a push device; dipping paint: use the push device to push the pencils out from the bottom of the hopper one by one, the pencil in the front is pushed forward by the pencil in the back, inserted into the paint box, and from the The paint box passes through quickly; drying: the pens coming out of the paint box fall on the conveyor belt and are conveyed horizontally, and the paint on the conveying pencil is quickly dried by the dryin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D175/04C09D7/61C09D7/63C09D7/65
CPCC09D133/00C09D7/61C09D7/63C09D7/65C09D7/20C08L2205/025C08L2205/03C08L2205/035C08L75/04C08L33/00C08K13/02C08K3/34C08K5/17C08K5/57C08K3/36
Inventor 夏洪伟
Owner 浙江贝斯特软化板有限公司
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