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1,5-naphthalene diisocyanate type polyurethane elastomer and preparation method and application thereof

A technology of naphthalene diisocyanate and polyurethane elastomer, which is applied in the field of 1,5-naphthalene diisocyanate polyurethane elastomer and its preparation, and can solve the problems of strong resistance, general high temperature resistance, and large internal heat generation

Inactive Publication Date: 2017-11-07
杭州重力脚轮科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyurethane also has the following disadvantages: 1. Large internal heat generation and general high temperature resistance
2. Not resistant to strong polar solvents and strong acid and alkali media

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1. The 1,5-naphthalene diisocyanate polyurethane elastomer in this embodiment includes component A and component B, and the component A and component B are constituted with a mass ratio of 100:21.5; the component A includes polyethylene Lactone polyols and polyisocyanates, in parts by weight, wherein the content of isocyanate groups is 6% (mass fraction), 100 parts of polycaprolactone polyols with a hydroxyl value of 109 mg KOH / g, 1,5-naphthalene diisocyanate 26 parts; the component B includes polycaprolactone polyol, 1,4-butanediol and stannous octoate, in parts by weight, wherein 60 parts of polycaprolactone polyol, 1,4-butanediol 35 parts, 2 parts of stannous octoate.

[0017] The preparation of above-mentioned 1,5-naphthalene diisocyanate type polyurethane elastomer is to carry out according to the following steps:

[0018] 1) Synthesis of prepolymer: Take 100 parts by weight of polycaprolactone polyol with a hydroxyl value of 109mgKOH / g and add it into th...

Embodiment 2

[0021] Example 2. The 1,5-naphthalene diisocyanate polyurethane elastomer in this embodiment includes component A and component B, and the component A and component B are constituted with a mass ratio of 100:22; the component A includes polyethylene Lactone polyols and polyisocyanates, in parts by weight, wherein the content of isocyanate groups is 6% (mass fraction), 103 parts of polycaprolactone polyols with a hydroxyl value of 112 mg KOH / g, 1,5-naphthalene diisocyanate 27 parts; the component B includes polycaprolactone polyol, 1,4-butanediol and stannous octoate, in parts by weight, wherein 63 parts of polycaprolactone polyol, 1,4-butanediol 38 parts, 2 parts of stannous octoate.

[0022] The preparation of above-mentioned 1,5-naphthalene diisocyanate type polyurethane elastomer is to carry out according to the following steps:

[0023] 1) Synthesis of prepolymer: Take 103 parts by weight of polycaprolactone polyol with a hydroxyl value of 112mgKOH / g and add it to the re...

Embodiment 3

[0026] Example 3. The 1,5-naphthalene diisocyanate type polyurethane elastomer in this embodiment comprises component A and component B, and described component A and component B constitute with mass ratio 100: 22.5; Described component A comprises polyethylene Lactone polyols and polyisocyanates, in parts by weight, wherein the content of isocyanate groups is 6% (mass fraction), 105 parts of polycaprolactone polyols with a hydroxyl value of 115 mg KOH / g, 1,5-naphthalene diisocyanate 28 parts; the component B includes polycaprolactone polyol, 1,4-butanediol and stannous octoate, in parts by weight, wherein 65 parts of polycaprolactone polyol, 1,4-butanediol 40 parts, 2 parts of stannous octoate.

[0027] The preparation of above-mentioned 1,5-naphthalene diisocyanate type polyurethane elastomer is to carry out according to the following steps:

[0028] 1) Synthesis of prepolymer: Take 105 parts by weight of polycaprolactone polyol with a hydroxyl value of 115 mgKOH / g, add it...

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PUM

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Abstract

The invention discloses a 1,5-naphthalene diisocyanate type polyurethane elastomer and a preparation method and application thereof. The 1,5-naphthalene diisocyanate type polyurethane elastomer comprises a component A and a component B, and the mass ratio of the component A to the component B is 100:21.5-22.5; the component A is prepared from, by weight, 100-105 parts of polycaprolactone polyol and 26-28 parts of polyisocyanates, the content of isocyanate groups of polycaprolactone polyol is 6% by mass, the hydroxyl value is 109-115 mg KOH / g, and the polyisocyanates is 1,5-naphthalene diisocyanate; the component B is prepared from, by weight, 60-65 parts of polycaprolactone polyol with the hydroxyl value being 109-115 mg KOH / g, 35-40 parts of 1,4-butanediol and 2 parts of organic tin catalyst; trundles manufactured from the elastomer can be used for high dynamic load and continuous high-speed running and heat resisting occasions, and can be adopted as heavy type high-end forklift driving wheels and bearing wheels, and the effect is remarkable.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a 1,5-naphthalene diisocyanate type polyurethane elastomer and a preparation method and application thereof. Background technique [0002] Polyurethane elastomer, also known as polyurethane rubber, is a type of elastic polymer material containing more carbamate (-NHCOO-) characteristic groups in the molecular chain. They are usually prepared from polyisocyanates and oligomeric polyols as well as polyols or aromatic diamines, among others. Polyurethane elastomers have a wide range of properties and are a class of polymer materials ranging from rubber to plastics. In terms of application, polyurethane, as a polymer material with high strength, tear resistance and wear resistance, is widely used in daily life, industrial and agricultural production, medicine and other fields. Specifically, polyurethane elastomer can be used as a roller , conveyor belts, hoses, auto par...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/66C08G18/10C08G18/42C08G18/32C08L75/08
CPCC08G18/10C08G18/3206C08G18/4277C08G18/7678C08L75/08C08G18/664
Inventor 杨益平盛健康蔡爱军姚辉钱兵邓君君
Owner 杭州重力脚轮科技有限公司
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