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Film for pressure sensing test and preparation method thereof

A technology of induction testing and film, which is applied in the direction of measuring fluid pressure, measuring force, measuring device, etc., to achieve the effects of low cost, convenient use and simple preparation process

Active Publication Date: 2020-08-25
上海净极防护用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the above-mentioned problems existing in the prior art, the object of the present invention is to provide a film for pressure-sensing testing and a preparation method thereof, so as to overcome the defects of the existing pressure-measuring film

Method used

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  • Film for pressure sensing test and preparation method thereof
  • Film for pressure sensing test and preparation method thereof
  • Film for pressure sensing test and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 1. Preparation of microspheres:

[0063] a) Dissolve 3g of urea in 24.892g of deionized water, then add 8.108g, 37wt% formaldehyde aqueous solution, stir evenly, add 10wt% triethanolamine aqueous solution to adjust the pH value of the solution to 8.5, then react at 70°C for 1 hour to prepare Obtain urea-formaldehyde resin prepolymer;

[0064] b) Dissolve 0.4g sodium dodecyl sulfate (SDS, emulsifier), 0.12g cetyl alcohol (CA, stabilizer) in 30g deionized water, add 6g solvent oil (diarylethane) after fully dissolving , the resulting mixture was placed in an ultrasonic disperser at room temperature (about 25° C.) and subjected to ultrasonic treatment for 5 minutes (ultrasonic output power was 60%) to obtain an emulsion for polymerization;

[0065] c) mixing the urea-formaldehyde resin prepolymer prepared in step a) with the polymerization emulsion prepared in step b) to obtain a mixed solution, then adopting 10wt% citric acid aqueous solution to adjust the pH value of th...

Embodiment 2

[0074] 1. Preparation of microspheres:

[0075] a) Dissolve 2 g of urea in 26.585 g of deionized water, then add 5.405 g of 37 wt % formaldehyde aqueous solution, stir evenly, add 10 wt % triethanolamine aqueous solution to adjust the pH value of the solution to 8.5, and then react at 70 ° C for 1 hour to prepare Obtain urea-formaldehyde resin prepolymer;

[0076] b) Dissolve 0.4g sodium dodecyl sulfate (SDS, emulsifier), 0.12g cetyl alcohol (CA, stabilizer) in 30g deionized water, add 8g solvent oil (diarylethane) after fully dissolving , the resulting mixture was placed in an ultrasonic disperser at room temperature (about 25° C.) and subjected to ultrasonic treatment for 5 minutes (ultrasonic output power was 60%) to obtain an emulsion for polymerization;

[0077] c) mixing the urea-formaldehyde resin prepolymer prepared in step a) with the polymerization emulsion prepared in step b) to obtain a mixed solution, then adopting 10wt% citric acid aqueous solution to adjust the...

Embodiment 3

[0086] 1. Preparation of microspheres:

[0087] a) Dissolve 2.4g of urea in 25.914g of deionized water, then add 6.486g, 37wt% formaldehyde aqueous solution, stir evenly, add 10wt% triethanolamine aqueous solution to adjust the pH value of the solution to 8.5, then react at 70°C for 1 hour, Prepare urea-formaldehyde resin prepolymer;

[0088] b) Dissolve 0.4g sodium dodecyl sulfate (SDS, emulsifier), 0.12g cetyl alcohol (CA, stabilizer) in 30g deionized water, add 8g solvent oil (diarylethane) after fully dissolving , the resulting mixture was placed in an ultrasonic disperser at 30°C for ultrasonic treatment for 5 minutes (ultrasonic output power was 65%) to obtain an emulsion for polymerization;

[0089] c) mixing the urea-formaldehyde resin prepolymer prepared in step a) with the polymerization emulsion prepared in step b) to obtain a mixed solution, then adopting 10wt% citric acid aqueous solution to adjust the pH value of the solution to 2, and then at 70 After reacting...

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Abstract

The invention discloses a film for a pressure sensing test and a preparation method of the film. The film for the pressure sensing test is a two-sheet type film and includes a film A and a film B; a pressure-sensitive adhesive layer and a deformable microsphere coating sequentially coat a substrate A from bottom to top, so that the film A can be formed; a first pigment coating layer and a second pigment coating layer sequentially coat a substrate B from bottom to top, so that the film B can be formed; and during the pressure test, the pressure-sensitive adhesive layer of the film A is attachedto the front surface of the first pigment layer of the film B. The film for the pressure sensing test of the invention has the advantages of low cost, convenient use, simple preparation process and no pollution to the environment, and can replace a traditional chemical color developing film so as to be applied to the pressure test.

Description

technical field [0001] The invention relates to a film and a preparation method thereof, in particular to a film for pressure sensing test and a preparation method thereof. Background technique [0002] During the production process, the pressure of the equipment needs to be monitored. At present, the pressure measurement film (commonly known as pressure-sensitive paper) is mainly used to measure the pressure, pressure distribution and pressure balance of the equipment. [0003] At present, commonly used pressure measurement films are divided into single-sheet type and double-sheet type. The single-sheet type pressure-sensitive paper is coated with a color-developing substance on the substrate, and a microcapsule layer is arranged on the upper layer of the color-developing substance. The microcapsule is wrapped with Chromogenic substances (such as the pressure-sensitive film disclosed in Chinese patent CN201510163546.3); double-sheet pressure-sensitive paper is composed of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/00G01L11/00C08G12/12
CPCC08G12/12G01L1/00G01L11/00
Inventor 徐羽翰江孝辉
Owner 上海净极防护用品有限公司
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