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Method for determination and reduction of paint viscosity on brush

A technology for brush retardation and paint, applied in the field of measuring paint properties, which can solve problems such as performance damage, uneven paint film formation, and gloss reduction.

Active Publication Date: 2013-05-15
NIPPON PAINT CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the flocculated polymer sticks the bristles together, resulting in brush stagnation, while other components flocculate. Although there is no polymer to bond the bristles, brush stagnation will also occur to varying degrees, because the main system of latex paint Flocculation has occurred, including the distribution of fillers, etc. will be significantly affected
Therefore, if you use an unqualified brush to paint latex paint, even if the phenomenon of brush stagnation is not very serious, it will lead to uneven film formation, decreased gloss, decreased hiding power, etc., and most of the properties will be damaged.

Method used

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  • Method for determination and reduction of paint viscosity on brush
  • Method for determination and reduction of paint viscosity on brush
  • Method for determination and reduction of paint viscosity on brush

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Performance testing of brushes

[0089] After measuring and testing a large number of brushes, that is, testing commercially available brushes after soaking in tap water for 4 hours, the total amount of detected substances determined. The total amount of detectable matter of a representative brush (wool brush) is as follows:

[0090] Total amount of detected substance (ppm)

[0091]

[0092] Detection device

[0093] Such as Figure 1~3 Shown is a kind of device of measuring paint stagnation, and described device comprises:

[0094] An open container 1, the top of the open container 1 is provided with three openings 2 for accommodating brushes; one side of the open container 1 is provided with a water inlet 3; the other side is provided with a water outlet 4, and the position of the water outlet 4 is lower than the water inlet 3;

[0095] The bottom of the opening 2 is provided with a soaking platform 5 for placing brushes for soaking,

[0096] A filter are...

Embodiment 2

[0100] brush method

[0101] Prepare 1 piece of 1×1.2M white cardboard, 1 piece of 500CC sample paint and 1 piece of Nippon BW-1075 wool brush; take 300g sample and dilute 20%\50%\100% in mass ratio, and clean and shake Nippon BW1075 brush Brush after drying; the brushing process is to brush each product back and forth for about 10 minutes. After the first brushing, put the brush into the paint and soak for 5 minutes before brushing, and observe the staged hardening of the brush And whether there are particles in the brush after washing. When the brush does not harden, it means that the product will not react with the wool brush; when the brush partially hardens, it is easy to rinse with water and continue construction; when the brush partially hardens, it is not easy to rinse with water , There are more particles, which will affect the construction; when the brush is completely hardened, it cannot be used for construction.

[0102] Example 2

[0103] weighing method

...

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PUM

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Abstract

The invention provides a method for determination and reduction of a paint viscosity on a brush. An immersion method is employed and comprises the following steps: (a) weighing n paint samples with a weight of A, diluting to a mass ratio of X1-Xn to obtain diluted samples, wherein n is an integer larger than 1. (b) placing the diluted samples from step (1) in an open container and immersing n brushes to be measured in the diluted samples; (c) observing changes of the brushes at immersion time t1-tm respectively and measuring a brush first property changes; (d) taking out the brushes, flushingin running water for a specific time, and measuring a brush second property changes; (e) determining the paint viscosity on the brush and construction performance of the paint, according to the degrees of the measured brush first property changes and the brush second property changes. The invention provides a rapid method for quantitative evaluation of the paint viscosity on the brush.

Description

technical field [0001] The invention relates to a method for measuring the performance of paint, in particular to a method for measuring the performance of paint. Background technique [0002] In addition to the common roller coating and spraying in the construction of latex paint, the use of brushes is also a common construction method. There are many kinds of hair brushes (or brushes) at present, and the brushes used for latex paint should meet strict processes technically, such as: boiling, degreasing, bleaching and cleaning. The bristles of a considerable part of paint brushes are mixed with a large amount of calcium and magnesium ions, and contain a large amount of acidic substances. The bristles of inferior paint brushes are stiff. During the construction process, a large amount of water-soluble high-valent metal ions and hydrogen ions enter the latex paint system, which breaks the balance of the latex paint system and causes the flocculation of the main component par...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N11/00C09D7/12
Inventor 向慧熊绍泊
Owner NIPPON PAINT CHINA