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A kind of environment-friendly high-hardness and high-transparency polyurethane resin and preparation method thereof

A polyurethane resin, high hardness technology, applied in the field of polyurethane resin, can solve the problems of easy yellowing, poor toughness, non-compliance with environmental protection requirements, etc., and achieve the effects of low linear shrinkage, high strength, excellent yellowing resistance and transparency

Active Publication Date: 2022-06-07
北京小鸡磕技文化创意有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For example: epoxy resin has high hardness and brittle texture, and it is easy to turn yellow when exposed to sunlight for a long time. Unsaturated resin polyester has a large linear shrinkage rate, the cured material is brittle, poor toughness, and it is easy to yellow when exposed to the natural environment for a long time. Although industrial rigid transparent polyurethane is superior to epoxy resin and unsaturated resin in terms of resistance to yellowing caused by ultraviolet radiation, it has defects in meeting heat resistance and impact resistance at the same time; in addition, some rigid transparent polyurethane material curing systems Contains carcinogens and does not meet environmental protection requirements

Method used

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  • A kind of environment-friendly high-hardness and high-transparency polyurethane resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] An environmentally friendly high-hardness and high-transparency polyurethane resin, comprising the following raw materials in parts by weight: 65 parts by weight of a polymer and 100 parts by weight of a curing agent;

[0036] The polymer is composed of the following raw materials by weight: 96 parts by weight of castor oil-modified polyester polyol with a hydroxyl value of 315mg / KOH, 10,760.5 parts by weight of antioxidant, 0.5 parts by weight of ultraviolet absorber UV328, organic neodecanoic acid 0.3 parts by weight of bismuth acid and organic zinc neodecanoate mixture;

[0037] The curing agent is composed of the following raw materials in parts by weight: 85 parts by weight of 4,4'-dicyclohexylmethane diisocyanate, 5 parts by weight of N,N,N',N'-tetra(2-hydroxypropyl)ethylenediamine parts by weight;

[0038] The preparation method of the environment-friendly high-hardness and high-transparency polyurethane resin described in Embodiment 1 comprises the following st...

Embodiment 2

[0043] An environmentally friendly high-hardness and high-transparency polyurethane resin, comprising the following raw materials in parts by weight: 75 parts by weight of a polymer and 100 parts by weight of a curing agent;

[0044] The polymer is composed of the following raw materials in parts by weight: 96.5 parts by weight of castor oil-modified polyester polyol with a hydroxyl value of 315mg / KOH, 10,760.6 parts by weight of antioxidant, 0.6 parts by weight of ultraviolet absorber UV328, organic neodecanoic acid 0.35 parts by weight of bismuth acid compound;

[0045] The curing agent is composed of the following raw materials in parts by weight: 88 parts by weight of 4,4'-dicyclohexylmethane diisocyanate, 88 parts by weight of N,N,N',N'-tetrakis(2-hydroxypropyl)ethylenediamine 8 parts by weight.

[0046] The preparation method of the environment-friendly high-hardness and high-transparency polyurethane resin described in embodiment 2 comprises the following steps:

[00...

Embodiment 3

[0051] An environmentally friendly high-hardness and high-transparency polyurethane resin, comprising the following raw materials in parts by weight: 80 parts by weight of a polymer and 100 parts by weight of a curing agent;

[0052] The polymer is composed of the following raw materials by weight: 97 parts by weight of castor oil-modified polyester polyol with a hydroxyl value of 315mg / KOH, 10,760.7 parts by weight of antioxidant, 0.7 parts by weight of ultraviolet absorber UV328, organic neodecanoic acid 0.4 parts by weight of zinc acid compound;

[0053] The curing agent is composed of the following raw materials in parts by weight: 90 parts by weight of 4,4'-dicyclohexylmethane diisocyanate, 10 parts by weight of N,N,N',N'-tetra(2-hydroxypropyl)ethylenediamine parts by weight.

[0054] The preparation method of the environment-friendly high-hardness and high-transparency polyurethane resin described in Embodiment 3 comprises the following steps:

[0055] (1) Preparation ...

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Abstract

The invention discloses an environment-friendly high-hardness and high-transparency polyurethane resin, which comprises the following raw materials in parts by weight: 65-100 parts by weight of a polymer and 100 parts by weight of a curing agent; the polymer is composed of the following parts by weight of raw materials: 96-98 parts by weight of grease polyol, 0.5-1 parts by weight of antioxidant, 0.5-1 parts by weight of ultraviolet absorber, 0.3-0.5 parts by weight of catalyst; the curing agent is composed of the following raw materials by weight: isocyanate 85-95 parts by weight, 5-15 parts by weight of organic amine; the beneficial effects of the present invention are: the environment-friendly high-hardness and high-transparency polyurethane resin of the present invention is made up of two parts, a polymer and a curing agent, and the raw materials used are environmentally friendly raw materials, which will not Harmful to the environment and the human body, without carcinogens; the environmentally friendly high-hardness and high-transparency polyurethane resin described in the present invention has high strength and toughness, and has the characteristics of high temperature resistance and low linear shrinkage rate. The products made of it Has excellent yellowing resistance and transparency.

Description

technical field [0001] The invention relates to a polyurethane resin, in particular to an environment-friendly high-hardness and high-transparency polyurethane resin and a preparation method thereof. Background technique [0002] Existing transparent art and art ornament resins are made of epoxy resin, unsaturated polyester resin and industrial rigid transparent polyurethane, and these resins have some disadvantages more or less. [0003] For example: epoxy resin has high hardness and brittle texture, and it is easy to turn yellow when exposed to sunlight for a long time. The linear shrinkage rate of unsaturated resin polyester is large, and the cured material is brittle and has poor toughness. It is also easy to yellow when exposed to the natural environment for a long time. Although industrial rigid transparent polyurethane is superior to epoxy resins and unsaturated resins in terms of resistance to yellowing caused by ultraviolet radiation, it has defects in meeting heat ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/68C08K5/134C08K5/3475
CPCC08G18/68C08K5/1345C08K5/3475
Inventor 詹羿
Owner 北京小鸡磕技文化创意有限公司
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