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A kind of heat-resistant heat-sensitive medical film and preparation method thereof

A high-temperature-resistant, heat-sensitive technology, applied in the field of heat-sensitive printing materials, can solve the problems of high surface friction resistance, affecting the color development of the imaging layer, poor high-temperature resistance, etc., and achieves increased mass transfer resistance and good scratch resistance. , Improve the effect of waterproof performance

Active Publication Date: 2022-12-02
HANGZHOU MEI QING DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the existing thermosensitive medical film has poor waterproof performance, is easy to get damp, produces uneven heat transfer, has large surface friction resistance, poor high temperature resistance, affects the color development of the imaging layer, and damages the thermosensitive imaging equipment in severe cases. To provide a high-temperature-resistant heat-sensitive medical film with outstanding high-temperature resistance and excellent comprehensive properties such as low friction coefficient, high permeability, and high color density, etc.

Method used

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  • A kind of heat-resistant heat-sensitive medical film and preparation method thereof

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Embodiment 1

[0037]This embodiment provides a high temperature resistant thermosensitive medical film, which sequentially includes a protective layer, a thermosensitive imaging layer, a substrate layer and a back layer; wherein the protective layer includes the following raw materials in parts by weight: 55 parts of polyurethane, polyester 30 parts of vinyl alcohol, 7 parts of micron particle modification additive, 3 parts of cyclotrimethylolpropane methylal acrylate and 25 parts of deionized water.

[0038] The preparation method of the micron particle modification auxiliary agent is: take 0.5mmol of 2-aminoterephthalic acid and 0.2mmol of zirconium tetrachloride and dissolve them in 30mL of N,N-dimethylformamide respectively, and dissolve the solution After ultrasonication for 30 minutes, place in a reaction vessel, then heat at 130°C for 24 hours, and cool the resulting solution to room temperature; then centrifuge and wash 3 times with 50 mL of absolute ethanol to remove unreacted N,N-d...

Embodiment 2

[0046] This embodiment provides a high temperature resistant thermosensitive medical film, which sequentially includes a protective layer, a thermosensitive imaging layer, a substrate layer and a back layer; wherein the protective layer includes the following raw materials in parts by weight: 50 parts of polyurethane, polyester 35 parts of vinyl alcohol, 12 parts of micron particle modification additive, 5 parts of cyclotrimethylolpropane formal acrylate and 30 parts of deionized water.

[0047] The preparation method of the micron particle modification aid is: take 0.6mmol of 2-aminoterephthalic acid and 0.3mmol of zirconium tetrachloride and dissolve them in 45mL of N,N-dimethylformamide respectively, and dissolve the solution After ultrasonication for 35 minutes, place them in a reaction vessel, then heat at 120°C for 24 hours, and cool the resulting solution to room temperature; then centrifuge and wash 3 times with 80 mL of absolute ethanol to remove unreacted N,N-di Meth...

Embodiment 3

[0055] This embodiment provides a high temperature resistant thermosensitive medical film, which sequentially includes a protective layer, a thermosensitive imaging layer, a substrate layer and a back layer; wherein the protective layer includes the following raw materials in parts by weight: 60 parts of polyurethane, polyester 25 parts of vinyl alcohol, 4 parts of micron particle modification additive, 5 parts of cyclotrimethylolpropane formal acrylate and 30 parts of deionized water.

[0056] The preparation method of the micron particle modification auxiliary agent is: take 0.8mmol of 2-aminoterephthalic acid and 0.4mmol of zirconium tetrachloride and dissolve them in 50mL of N,N-dimethylformamide respectively, and dissolve the solution Sonicate for 45 minutes and place in a reaction vessel, then heat at 150°C for 24 hours, cool the resulting solution to room temperature; then centrifuge and wash with 100 mL of absolute ethanol three times to remove unreacted N,N-di Methylf...

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Abstract

The invention provides a high-temperature-resistant heat-sensitive medical film and a preparation method thereof, which sequentially include a protective layer, a thermal imaging layer, a base material layer, and a back layer; the protective layer includes: polyurethane, polyvinyl alcohol, micron particle modified auxiliary agent, cyclotrimethylolpropane formal acrylate and deionized water. In the present invention, by mixing the polyurethane adhesive with the polyvinyl alcohol system, the protective layer can be made more excellent in terms of high temperature resistance, scratch resistance, transparency, reduced friction coefficient, and color density index. Sexual additives, through the micron particles soak into the membrane pores, fill the membrane pores, produce a strong interlocking effect with the system, increase the mass transfer resistance of water, reduce the permeability of water, thereby improving the waterproof performance, high temperature resistant thermal medical film has Excellent water resistance, good elasticity, strong flexibility, and good scratch resistance protective layer, which improves the color rendering effect of thermal imaging, greatly improves the stability of film imaging, and is easy to store.

Description

technical field [0001] The invention belongs to the technical field of heat-sensitive printing materials, and relates to a heat-sensitive medical film, in particular to a high-temperature resistant heat-sensitive medical film and a preparation method thereof which can improve the waterproof performance and scratch resistance of the film. Background technique [0002] Compared with traditional silver salt recording materials, thermosensitive recording materials can realize the miniaturization of recording devices, and have the advantages of simple processing technology and equipment, low price, no need for developing, easy to obtain high image density, and no noise in the recording process. developed rapidly. [0003] In the early heat-sensitive recording materials, the color developer and leuco dye were directly coated on one or adjacent layers of the support, and images were formed by adding them, which was very similar to the pressure-sensitive technology. Although the im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M5/41B41M5/28B41M5/42B41M5/44C09D4/02C09D4/06C09D7/63C09D163/00
CPCB41M5/44B41M5/426B41M5/41B41M5/28C09D4/06C09D7/63C09D163/00B41M2205/32B41M2205/36B41M2205/40
Inventor 张洪涛
Owner HANGZHOU MEI QING DIGITAL TECH
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