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Pressure detecting paper and preparation method thereof

A technology for detecting paper and pressure, applied in the field of pressure detection paper and its preparation, can solve the problems of microcapsule rupture, oxidation yellowing, product scrapping, etc., and achieve the effects of reducing usage, slowing down smoothness, and not easy to drop powder.

Active Publication Date: 2019-02-22
东莞市亚马电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing microcapsules are easily damaged during use, resulting in premature rupture of the microcapsules, contact reaction between the chromogenic substance wrapped in the microcapsules and the chromogenic substance, and premature color development of the pressure measurement film, resulting in product scrapping; Some color-developing substances are coated on the substrate, and are easily oxidized and yellowed when exposed to the atmosphere for a long time

Method used

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  • Pressure detecting paper and preparation method thereof
  • Pressure detecting paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A pressure detection paper, comprising a paper layer and a pressure-sensitive color-developing layer adhered to the paper layer, the pressure-sensitive color-developing layer is made of the following raw materials by weight:

[0049]

[0050] The particle diameter of the leuco dye microcapsules is 2.2 μm, and the particle diameter ratio of the leuco dye microcapsules, spacer and developer microcapsules is 1:4:2.5.

[0051] The spacer is calcium carbonate, the adhesive is mixed with carboxylated styrene-butadiene latex and modified starch at a weight ratio of 1:2, and the modified starch is oxidized starch.

[0052] The surfactant is sodium carboxymethyl cellulose and methyl cellulose mixed in a weight ratio of 4:1, and the solvent is water.

[0053] The preparation method of every part of said leuco dye microcapsules comprises the steps:

[0054] (A1) Weigh 3 parts of leuco dye, 40 parts of solvent naphtha, 45 parts of esterified modified SMA-water solution with a m...

Embodiment 2

[0075] A pressure detection paper, comprising a paper layer and a pressure-sensitive color-developing layer adhered to the paper layer, the pressure-sensitive color-developing layer is made of the following raw materials by weight:

[0076]

[0077] The particle diameter of the leuco dye microcapsules is 0.2 μm, and the particle diameter ratio of the leuco dye microcapsules, spacer and developer microcapsules is 1:3:2.

[0078] The spacer is calcium carbonate, the adhesive is mixed with carboxylated styrene-butadiene latex and modified starch at a weight ratio of 1:2, and the modified starch is cationic starch.

[0079] The surfactant is sodium carboxymethyl cellulose and methyl cellulose mixed in a weight ratio of 3:1, and the solvent is water.

[0080] The preparation method of every part of said leuco dye microcapsules comprises the steps:

[0081] (A1) Weigh 1 part of leuco dye, 35 parts of solvent naphtha, 40 parts of esterified modified SMA-water solution with a mass...

Embodiment 3

[0102] A pressure detection paper, comprising a paper layer and a pressure-sensitive color-developing layer adhered to the paper layer, the pressure-sensitive color-developing layer is made of the following raw materials by weight:

[0103]

[0104] The particle size of the leuco dye microcapsules is 4 μm, and the particle size ratio of the leuco dye microcapsules, the spacer and the developer microcapsules is 1:5:3.

[0105] The spacer is calcium carbonate, the adhesive is mixed with carboxylated styrene-butadiene latex and modified starch at a weight ratio of 1:2, and the modified starch is oxidized starch.

[0106] The surfactant is sodium carboxymethyl cellulose and methyl cellulose mixed in a weight ratio of 5:1, and the solvent is water.

[0107] The preparation method of every part of said leuco dye microcapsules comprises the steps:

[0108] (A1) Weigh 4 parts of leuco dye, 45 parts of solvent naphtha, 50 parts of esterified modified SMA-water solution with a mass ...

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Abstract

The present invention relates to the technical field of display, in particular to a piece of pressure detecting paper and a preparation method thereof. The pressure detecting paper comprises a paper layer and a pressure sensitive color developing layer adhered to the paper layer. The pressure sensitive color developing layer is prepared by the following raw materials, by weight: 15 to 30 parts ofleuco dye microcapsules, 9 to 18 parts of spacing agents, 10 to 15 parts of adhesives, 15 to 30 parts of developer microcapsules, 1 to 3 parts of surfactants, and 30 to 45 parts of solvents. The pressure detecting paper has the flat paper surface and the smooth surface; the pressure sensitive color developing layer coated on the paper layer is not easy to fall and has good staining-resistant and yellowing-resistant performances; and the color displaying density and color development speed are good.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a pressure detection paper 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 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. Among them, 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. There are chromogenic substances, and its working principle is: when the pressure is applied, the microcapsules rupture, and the chromogenic substances wrapped in the microcapsules flow out and react chemically with the chromogenic substance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/24
CPCG01L1/247
Inventor 张光明
Owner 东莞市亚马电子有限公司
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