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Transparent polyurethane optical material and preparation method thereof

An optical material, polyurethane technology, applied in the field of transparent polyurethane optical materials and its preparation, can solve the problems of general mechanical strength and hardness, and limit the development of transparent polyurethane optical materials

Active Publication Date: 2021-05-14
INST OF NEW MATERIALS & IND TECH WENZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polyurethane materials currently on the market have good optical properties, but their mechanical strength and hardness are average, and they are only suitable for use as ordinary lenses; with the development of science and technology, people have higher and higher performance requirements for materials. In some In special fields, such as bullet-proof glass or police explosion-proof shields with good optical properties and certain mechanical strength, or special glasses with high light transmittance and refractive index while maintaining a certain hardness film, but the existing polyurethane materials cannot meet the market demand, which greatly limits the development of transparent polyurethane optical materials

Method used

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  • Transparent polyurethane optical material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Described promotor comprises following mole fraction material composition:

[0040] 1 part of 4-(10H-phenothiazin-10-yl)aniline;

[0041]1 part of 4-(10H-phenothiazin-10-yl)aniline;

[0042] 1.6 parts of polymethylhydrogensiloxane.

[0043] The preparation method of described accelerator comprises the following steps:

[0044] S1: Prepare raw materials according to the set mole parts, add 4-(10H-phenothiazin-10-yl)aniline and 4-(10H-phenothiazin-10-yl)aniline to the reaction with the first solvent Stir and mix in the container, then raise the temperature to 80° C., then add a platinum catalyst (Karstedt catalyst solution with a concentration of 10 ppm) into the reaction container and continue to stir and mix. After mixing evenly, the first mixed solution is formed;

[0045] S2: Under a nitrogen atmosphere, add polymethylhydrogensiloxane to the first mixed solution and stir to mix. After mixing evenly, react at a temperature of 160°C for 25 hours; after the reaction...

Embodiment 2

[0049] A transparent polyurethane optical material, characterized in that it comprises the following components by weight:

[0050] 20 parts of isocyanate;

[0051] 25 parts of polymer polyols;

[0052] 7 parts of small molecular polyols;

[0053] 0.2 parts of catalyst;

[0054] 4 parts of chain extender;

[0055] 3 parts of additives;

[0056] Accelerator 2 parts;

[0057] Described isocyanate is the mixture of 1,4-two (isocyanatomethyl) cyclohexane, isophorone diisocyanate and p-phenylene diisocyanate, and its mass ratio is 2:2:1;

[0058] Described polymer polyol is the mixture of polytetrahydrofuran diol and polycarbonate polyol, and its mass ratio is 3:1;

[0059] The additive is a mixture of 2,3-bis(2-mercaptoethylthio)-1-propanethiol and 5-ethylpropylthio-1,3,4-thiadiazole-2-thiol, which The mass ratio is 3:2;

[0060] Described promotor is made by embodiment 1;

[0061] The small molecular polyol is a mixture of 1,4 dihydroxy-2-butene and 1,4-butanediol, and i...

Embodiment 3

[0069] A transparent polyurethane optical material, characterized in that it comprises the following components by weight:

[0070] 13 parts of isocyanate;

[0071] 17 parts of polymer polyols;

[0072] 5 parts of small molecular polyols;

[0073] Catalyst 0.1 part;

[0074] 3 parts of chain extender;

[0075] 2 parts of additives;

[0076] Accelerator 1 part;

[0077] Described isocyanate is the mixture of 1,4-two (isocyanatomethyl) cyclohexane, isophorone diisocyanate and p-phenylene diisocyanate, and its mass ratio is 2:2:1;

[0078] Described polymer polyol is the mixture of polytetrahydrofuran diol and polycarbonate polyol, and its mass ratio is 3:1.

[0079] The additive is a mixture of 2,3-bis(2-mercaptoethylthio)-1-propanethiol and 5-ethylpropylthio-1,3,4-thiadiazole-2-thiol, which The mass ratio is 3:2;

[0080] Described promotor is made by embodiment 1;

[0081] Described small molecule polyhydric alcohol is the mixture of 1,4 dihydroxy-2-butene and 1,4-but...

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Abstract

The invention discloses a transparent polyurethane optical material and a preparation method thereof. The transparent polyurethane optical material is prepared by taking isocyanate and polymer polyol as reactants and adding substances such as an additive for reaction. 1,4-bis (isocyanate methyl ester) cyclohexane, isophorone diisocyanate and p-phenylene diisocyanate are selected for the isocyanate, polytetrahydrofuran glycol and polycarbonate polyol are selected for the polymer polyol, and 2,3-bis (2-mercaptoethylthio)-1-propanethiol and 5-ethylpropylthio-1,3,4-thiadiazole-2-thiol are selected for the additive; an accelerant is prepared from polymethylhydrosiloxane and aniline substances through reaction, and 4-(10H-phenothiazin-10-yl) aniline and 4-(10H-phenothiazin-10-yl) aniline are selected for the aniline substances; and the finally prepared polyurethane material has the advantages of higher tensile strength and hardness, favorable mechanical properties, no color, transparency, higher refractive index and favorable optical properties, and is particularly suitable for being used as an optical material.

Description

technical field [0001] The invention relates to the field of polymer material synthesis, and more specifically relates to a transparent polyurethane optical material and a preparation method thereof. Background technique [0002] Polyurethane material is a material with high mechanical strength and transparency, and has excellent properties such as good oil resistance, high tensile strength, high breaking strength and high tearing strength. Due to its excellent mechanical properties, it is widely used in daily life to make pipes, films, sheets, automotive interiors and fiber materials. And its higher transparency can be used to make plexiglass and spectacle lenses. The polyurethane materials currently on the market have good optical properties, but their mechanical strength and hardness are average, and they are only suitable for use as ordinary lenses; with the development of science and technology, people have higher and higher performance requirements for materials. In s...

Claims

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Application Information

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IPC IPC(8): C08G18/75C08G18/76C08G18/67C08G18/66C08G18/44C08G18/48C08G18/12C08G18/32C08L75/14C08L83/08C08K5/46C08K5/372C08G77/392C08G77/388C08G77/12
CPCC08G18/722C08G18/753C08G18/755C08G18/7614C08G18/6674C08G18/4018C08G18/44C08G18/4854C08G18/3206C08G18/675C08G18/12C08L75/14C08G77/392C08G77/388C08G77/12C08L2201/10C08L2201/08C08G18/324C08G18/3212C08G18/3857C08L83/08C08K5/46C08K5/372
Inventor 任宝东晁国库章宗判郑丽雅赵亚娟
Owner INST OF NEW MATERIALS & IND TECH WENZHOU UNIV
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