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Method for preparing uniform film coating on small-size sample piece

A small-scale, prototype technology, used in coatings, devices for coating liquids on surfaces, pre-treatment surfaces, etc., to achieve the effect of saving paint, a simple preparation process, and avoiding human errors and spraying equipment errors.

Active Publication Date: 2012-08-01
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a method for preparing a uniform thin film coating on a small-sized sample, that is, it can prepare a thin film on a small-sized flat sample. And a very uniform coating method, the general coating thickness accuracy can reach 0.1μm, and the thickness of the coating film at one time is 5μm ~ 20μm, which solves the problem of preparing a uniform film on a small sample, and has the characteristics of simplicity, speed and high precision

Method used

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  • Method for preparing uniform film coating on small-size sample piece
  • Method for preparing uniform film coating on small-size sample piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1 Thin film homogeneous coating preparation for single top coats

[0020] The construction viscosity of the topcoat is 20 seconds to 30 seconds (Tu-4 viscosity cup detection). If the viscosity of the original paint is too high, it can be properly diluted with a special thinner for the finish paint. Put the 2cm×2cm small-sized flat sample that has been cleaned before painting into the film spinner, put the paint with the construction viscosity in the center of the small-sized flat sample to carry out centrifugal coating, so that the paint is thrown to the entire surface Above: the film throwing machine that generates centrifugal force, its speed and time are divided into three stages of control, the first stage of speed is 800 rpm, and the time is 5 seconds; the second stage of speed is 1000 rpm, and the time is 10 seconds; the third stage of speed 2000 rpm, the time is 10 seconds. With such parameter settings, the uniformity of the film thickness is relativ...

Embodiment 2

[0023] Example 2 Preparation of thin-film uniform coatings for single-coat metal-based paints

[0024] The construction viscosity of metal-based paint is 10 seconds to 20 seconds (tested by Tu-4 viscosity cup). If the viscosity of the original paint is too high, it can be diluted by adding a special thinner for metal-based paint. Put the 2cm×2cm small-sized flat sample that has been cleaned before painting into the film spinner, put the paint with the construction viscosity in the center of the small-sized flat sample to carry out centrifugal coating, so that the paint is thrown to the entire surface superior. It is characterized in that: the speed and time of the film throwing machine that generates centrifugal force are controlled in three stages, the first stage has a speed of 800 rpm, and the time is 5 seconds; the second stage has a speed of 1000 rpm, and the time is 10 seconds; the third stage The segment speed is 2000 rpm, and the time is 10 seconds. With such param...

Embodiment 3

[0027] Example 3 Preparation of thin-film uniform coatings for two-coat metallic paints

[0028] The construction viscosity of metal-based paint is 10 seconds to 20 seconds (tested by Tu-4 viscosity cup). If the viscosity of the original paint is too high, it can be diluted by adding a special thinner for metal-based paint. Put the 2cm×2cm small-size flat sample that has been cleaned before painting into the film spinner, put the paint with the highest construction viscosity in the center of the small-size flat sample for centrifugal coating, and shake the paint to the entire surface. On the surface. It is characterized in that: the speed and time of the film throwing machine that generates centrifugal force are controlled in three stages, the first stage has a speed of 800 rpm, and the time is 5 seconds; the second stage has a speed of 1000 rpm, and the time is 10 seconds; the third stage The segment speed is 2000 rpm, and the time is 10 seconds. With such parameter setti...

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Abstract

The invention relates to a method for preparing a uniform film coating on a small-size sample piece. Under the effect of the centrifugal force, paint is thrown onto the whole surface from the center position, and the redundant paint is thrown outside the edge. Through controlling the rotating speed and the time of the centrifugal force generation, the uniform paint film (the coating film precision can reach 0.1mum) with the coating film thickness lower than 20mum is obtained. The method belongs to a coating method capable of being used for preparing the coating film with the thin and uniform thickness on the small-size flat sample piece, the ordinary coating film thickness precision can reach 0.1 mum, the primary coating film thickness is 5 mum to 20 mum, the difficult problem for preparing the uniform film on the small sample piece is solved, and the method has the characteristics of simplicity, convenience, high speed and high precision.

Description

Technical field [0001] The invention involves a small -sized tablet sample coating method, which specializes in a method of preparing a uniform film coating on a small sample, which is the field of coating technology. Background technique [0002] The preparation method of uniform membrane thick coating commonly used in coatings includes spraying method, electro -swimming coating method, roller coating method, curtain coating method, and centrifugal coating method.However.The fluctuation range of the coating thickness of the above method is usually ± 5 μm or larger, which is not suitable for occasions with high uniformity requirements for coating thickness. Invention content [0003] The purpose of the present invention is to provide a method of preparing a uniform film coating on a small sample, that is, the coating method with a thin and uniform coating method on the small -sized tablet sample can be prepared.0.1 μm, the thickness of the coating film at a time is 5 μm ~ 20 μm,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/00B05D3/00B05D3/02
Inventor 王纳新张馨月
Owner CHINA FIRST AUTOMOBILE