High-stability thermosensitive paper and preparation method thereof
A heat-sensitive paper and high-performance technology, applied in the field of papermaking, can solve problems such as fading, prone to reverse reactions, and affecting the use effect, and achieve the effects of improving stability, ensuring water resistance, and high water preservation rate
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[0031] Example 1
[0032] A thermal paper with high stability, including a base paper layer, a pre-coating layer and a chromogenic layer.
[0033] The pre-coating composition is: 50 parts of filler and 10 parts of adhesive; the amount of pre-coating is controlled at 11g / m 2 .
[0034] The chromonic layer is prepared as follows:
[0035] Preparation of the developer dispersion: 35 parts of 2,4 diphenylsulfone phenol, 3 parts of polyvinyl alcohol, mixed and dispersed into a dispersion with a concentration of 35%, and ground in a wet grinder to a particle size of 1 μm;
[0036] Preparation of sensitizer dispersion: 35 parts of 1,2 diphenoxyethane, 3 parts of polyvinyl alcohol, mixed and dispersed into a dispersion with a concentration of 35%, and ground to a particle size of 0.8 μm in a wet grinder;
[0037] Preparation of dye dispersion: 35 parts of 2-(2-4-xylamino)-3-methyl-6-diethylaminofluoran, 3 parts of polyvinyl alcohol, mixed and dispersed into a dispersion with a concentration of 3...
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[0042] Example 2
[0043] A thermal paper with high stability, including a base paper layer, a pre-coating layer and a chromogenic layer.
[0044] The pre-coating composition is: 100 parts of filler and 25 parts of adhesive; the amount of pre-coating is controlled at 11g / m 2 .
[0045] The chromonic layer is prepared as follows:
[0046] Preparation of color developer dispersion: 35 parts of 4,4'-sulfonylbis[2-(2-propenyl)]phenol, 5 parts of polyvinyl alcohol, mixed and dispersed into a dispersion with a concentration of 35%, in a wet mill Grind to a particle size of 1μm;
[0047] Preparation of sensitizer dispersion: 35 parts of diphenyl sulfone, 5 parts of polyvinyl alcohol, mixed and dispersed into a dispersion with a concentration of 35%, and ground to a particle size of 0.8 μm in a wet mill;
[0048] Preparation of dye dispersion: 35 parts of 2-(2-4-xylamino)-3-methyl-6-diethylaminofluoran, 5 parts of polyvinyl alcohol, mixed and dispersed into a dispersion with a concentration of ...
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