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Polyurethane elastomer for mobile phones and its intermediate

A polyurethane elastomer and intermediate technology, applied in the field of shock-absorbing polyurethane, can solve problems such as unsatisfactory sealing effect, poor rebound performance, and fast aging speed, and achieve obvious protection effect, excellent rebound performance, and odor elimination Effect

Active Publication Date: 2013-08-21
上海井上高分子制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polyurethane elastomers for mobile phones generally have defects such as poor rebound performance, unsatisfactory sealing effect, and fast aging speed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The mass percentage is 60% polyether polyol (Shanghai Gaoqiao GEP-330N), 20% polyether polyol (Shanghai Gaoqiao GMN-3050), 10% PTMEG1000, 0.6% foam stabilizer (DC5526) , 1.5% crosslinking agent (BDO), 0.25% catalyst 1 (Dabco 1027), 0.1% catalyst 2 (Dabco RP202), 2% water, 4.05% cell opener (GK-350D), 1% Odor agent, 0.5% anti-aging agent (PUB350) are mixed to make intermediate A of polyurethane elastomer for mobile phones.

[0064] The obtained intermediate A and the TDI / MDI mixture B with an isocyanate index of 0.95 were prepared to obtain a polyurethane elastomer for mobile phones.

Embodiment 2

[0066] The mass percentage is 42.2% polyether polyol (Shanghai Gaoqiao GEP-360N), 20% polyether polyol (Shandong Dongda MN-3050); 10% PTMEG1000, 1.0% foam stabilizer (L- 232), 3.0% crosslinking agent (EG), 0.5% catalyst 1 (Dabco 1027), 0.3% catalyst 2 (Dabco RP202), 5% water, 10% cell opener (KF-28), 5% % deodorant, 3% anti-aging agent (PUB350) mixed to make intermediate A of polyurethane elastomer for mobile phones.

[0067] The obtained intermediate A and the mixture B of TDI / MDI with an isocyanate index of 0.9 are prepared to obtain a polyurethane elastomer for mobile phones.

Embodiment 3

[0069] The mass percentage is 40% polyether polyol (Shanghai Gaoqiao GEP-828), 40% polyether polyol (Shanghai Gaoqiao GMN-3050); 10% PTMEG1000, 0.6% foam stabilizer (DC5526) , 1.5% crosslinking agent (DEG), 0.25% catalyst 1 (Dabco 1027), 0.1% catalyst 2 (Dabco RP202), 2% water, 4.05% cell opener (GK-350D), 1% Odor agent, 0.5% anti-aging agent (PUB350) are mixed to make intermediate A of polyurethane elastomer for mobile phones.

[0070] The obtained intermediate A and the mixture B of TDI / MDI with an isocyanate index of 1.0 are prepared to obtain a polyurethane elastomer for mobile phones.

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PUM

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Abstract

The invention provides a polyurethane elastomer for mobile phones and its intermediate. The intermediate A consists of the following components: polyether polyol (Shanghai Gaoqiao GEP-330N, GEP-360N, GEP-828), polyether polyol (Shanghai Gaoqiao GMN-3050, Shandong Dongda MN-3050), PTMEG1000, a foam stabilizer, a crosslinking agent, a catalyst 1, a catalyst 2, water, a pore opening agent, a deodorant, and an anti-aging agent. The polyurethane elastomer provided in the invention has excellent rebound performance, good sealing effect, slow rebound rate, good buffering performance, and obvious protective effect. Specially, the anti-aging agent is added to prevent too fast aging of the polyurethane elastomer.

Description

technical field [0001] The invention relates to the field of shock-absorbing polyurethane, in particular to a polyurethane for mobile phones. Background technique [0002] With the rapid development of electronic products, the performance requirements of its accessories are getting higher and higher, and the performance requirements of polyurethane elastomers, which play an important role in shock absorption and sealing in mobile phones, are also increasing. However, the existing polyurethane elastomers for mobile phones generally have defects such as poor rebound performance, unsatisfactory sealing effect, and fast aging speed. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and solve many problems in the prior art, such as poor resilience performance, unsatisfactory sealing effect, and poor cushioning effect, so as to achieve effective protection and at the same time have good protection against Ag...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08G101/00
Inventor 陈玲霞吕佳男夏青青
Owner 上海井上高分子制品有限公司