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Slow-recovery foam with low temperature resistance and high density as well as preparation method thereof

A slow-rebound sponge and high-density technology, which is applied in the field of organic polymer synthesis, can solve problems such as poor bearing capacity, particularly large impact on hardness, and low density, and achieve cost-saving and good hole-opening effects

Inactive Publication Date: 2016-11-02
ZIBO DEXIN LIANBANG CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Slow rebound sponge is also called inert sponge, which has certain memory characteristics and is widely used in pillows, mattresses and packaging. However, although slow rebound sponges on the market have slow rebound characteristics, their density is generally low. The bearing capacity is poor, and the hardness is particularly affected by the environment, and the hardness of the sponge will increase at low temperature

Method used

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  • Slow-recovery foam with low temperature resistance and high density as well as preparation method thereof
  • Slow-recovery foam with low temperature resistance and high density as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Polyether polyol A (hydroxyl value 40, functionality 3, polyoxypropylene oxide triol) 55g, polyether polyol B (hydroxyl value 50, functionality 4, polyoxypropylene triol) 45g, Add 15g of polyether polyol C (hydroxyl value 360, functionality 3, polyoxypropylene oxide ethylene triol) into a 1L beaker, then add C-225 0.1g, L-580 3g, A33 0.9g, isooctanoic acid Bismuth 0.3g, deionized water 1g, stirred for 30 seconds.

[0029] (2) Modified black material: weigh 20 g of modified black material.

[0030] (3) Free foaming: Pour the weighed modified black material into the combined polyether, then stir for 7 seconds under a mixer with a rotating speed of 4000-4500r / min, pour the foamed liquid into the mold, Cut after 24 hours. That is, the finished high-density slow-rebound sponge is obtained.

[0031] The rebound time is about 4 seconds; the hardening is not obvious in the temperature range of 0-10 ℃, and it has the effect of low temperature resistance; the density is 62...

Embodiment 2

[0033] (1) Polyether polyol A (hydroxyl value 50, functionality 4.5, polyoxypropylene oxide triol) 48g, polyether polyol B (hydroxyl value 65, functionality 4.5, polyoxypropylene triol) 36g , polyether polyol C (hydroxyl value 400, functionality is 3.5, polyoxypropylene oxide ethylene triol) 8g joins in the beaker of 1L, then adds C-225 0.4g, 3.8g L-580, 1.3gA33, iso 0.3 g of bismuth octoate and 1 g of deionized water were stirred for 30 seconds.

[0034] (2) Modified black material: Weigh 40 g of modified black material.

[0035] (3) Free foaming: quickly pour the weighed modified black material into the combined polyether, then stir for 7 seconds under a mixer with a rotating speed of 4000-4500r / min, and pour the foamed liquid into the mold , cut after 24 hours. That is, the finished high-density slow-rebound sponge is obtained.

[0036] The rebound time is about 4.5 seconds; the hardening is not obvious in the temperature range of 0-10 ℃, and it has the effect of low tem...

Embodiment 3

[0038] (1) Add polyether polyol A polyoxypropylene oxide ethylene triol 55g, DEP-560D 30g, DMN-550 15g into a 1L beaker, then add C-2250.1g, 3gL-580, 0.9g A33, iso 0.3 g of bismuth octoate and 1 g of deionized water were stirred for 30 seconds.

[0039] (2) Modified black material: take 60g of modified black material according to the formula.

[0040] (3) Free foaming: quickly pour the weighed modified black material into the combined polyether, then stir for 7 seconds under a mixer with a rotating speed of 4000-4500r / min, and pour the foamed liquid into the mold , cut after 24 hours. That is, the finished high-density slow-rebound sponge is obtained.

[0041] The rebound time is about 4 seconds; the hardening is not obvious in the temperature range of 0-10 ℃, and it has the effect of low temperature resistance; the density is 75g / m 3 , the bearing capacity is twice as high as that of slow rebound sponges in the market.

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Abstract

The invention belongs to the field of organic polymer synthesis technology, and concretely relates to slow-recovery foam with low temperature resistance and high density as well as a preparation method thereof. The slow-recovery foam is prepared by the following raw materials: polyether polyol A (hydroxyl value is 30-50, and functionality is 2.5-4.5), polyether polyol B (hydroxyl value is 45-65 and functionality is 2.5-4.5), polyether polyol C (hydroxyl value is 340-400, and functionality is 2.5-3.5), a delayed action polyurethane catalyst, silicone oil, a tertiary amine catalyst, an organo-metallic catalyst, deionized water, and modified diphenylmethane-4,4'-diisocyanate. A pore forming agent is not added, and the pore forming effects are good; special slow-recovery silicone oil is not used, flexible form silicone oil can be directly used, and cost is saved. recovery time is 3-5 seconds which is the optimal recovery time for the slow-recovery foam; the slow-recovery foam has low temperature resisting effects, and the bearing capacity of the slow-recovery foam is one time higher than the bearing capacity of slow-recovery foam on the market. The invention also provides a preparation method of the slow-recovery foam.

Description

technical field [0001] The invention belongs to the technical field of organic polymer synthesis, and in particular relates to a low-temperature-resistant high-density slow-rebound sponge and a preparation method thereof. Background technique [0002] Slow rebound sponge is also called inert sponge, which has certain memory characteristics and is widely used in pillows, mattresses and packaging. However, although slow rebound sponges on the market have slow rebound characteristics, their density is generally low. The bearing capacity is poor, and the hardness is particularly affected by the environment, and the hardness of the sponge will increase at low temperatures. Therefore, it is necessary to study a slow rebound sponge with low temperature resistance and high density. Contents of the invention [0003] In view of the deficiencies in the prior art, the object of the present invention is to provide a low-temperature-resistant high-density slow-rebound sponge, which ha...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/48C08G18/22C08G18/18C08G101/00
CPCC08G18/163C08G18/18C08G18/227C08G18/4816C08G18/485C08G18/7671C08G2110/005C08G2110/0083
Inventor 王国强耿佃勇董伟王帅柴可军
Owner ZIBO DEXIN LIANBANG CHEM IND
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