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Air-permeable slow-rebound polyurethane foam plastic, and preparation method and application thereof

A technology of foamed plastics and polyurethane, which is applied in the field of polyurethane foamed plastics and its preparation, can solve the problems of poor slow rebound effect and low air permeability, and achieve the effect of avoiding collapse or air retention and soft hand feeling

Active Publication Date: 2019-12-17
JIANGSU CHANGHUA POLYURETHANE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] One of the main problems to be solved by the present invention is the low air permeability of slow rebound polyurethane foam plastics in the prior art or the problem of poor slow rebound effect at the same time. The present invention provides a breathable slow rebound polyurethane foam plastic with polyurethane foam air permeability High and has the advantages of good slow rebound effect

Method used

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  • Air-permeable slow-rebound polyurethane foam plastic, and preparation method and application thereof
  • Air-permeable slow-rebound polyurethane foam plastic, and preparation method and application thereof
  • Air-permeable slow-rebound polyurethane foam plastic, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. In container A, add polyether polyol A: 20 parts, polyether polyol B: 40 parts, polyether polyol C: 40 parts, water: 2 parts, A-33: 0.5 parts part, T-9: 0.1 part, L-618: 1 part, stir evenly, the stirring speed is 2500rpm, and the stirring temperature is 25°C; the hydroxyl value of polyether polyol A is 112gKOH / g, the functionality is 3, and the ring Ethylene oxide accounts for 60% by weight of the molecular weight of polyether polyol A; the hydroxyl value of polyether polyol B is 180mgKOH / g, and the functionality is 3, and ethylene oxide accounts for the molecular weight of polyether polyol B The weight percent content of polyether polyol C is 85%; the hydroxyl value of polyether polyol C is 41 mgKOH, and the functionality is 3;

[0026] 2. Add 60 parts by weight of toluene diisocyanate into container A, stir for 4-6 seconds to obtain material I, the stirring speed is 3000rpm, and the stirring temperature is 25°C;

[0027] 3. Quickly pour the material Ⅰ into a foami...

Embodiment 2 to Embodiment 5

[0029] Examples 2 to 5 were carried out according to the steps of Example 1. The only difference was the type of raw materials, the ratio of raw materials, the reaction time and the temperature. See Table 3 for details. The prepared breathable slow-rebound polyurethane foam The product quality inspection data are shown in Table 5.

[0030] The parts by weight of raw materials of each component in table 3 embodiment 1 to embodiment 5

[0031]

[0032]

[0033]

Embodiment 6 to Embodiment 8 and comparative example 1 to 3

[0035] Examples 6 to 8 and Comparative Examples 1 to 3 were carried out according to the steps of Example 1. The only difference was the type of raw materials, the ratio of raw materials, the reaction time and the temperature. See Table 4 for details. The prepared breathable The product quality inspection data of slow rebound polyurethane foam are shown in Table 5.

[0036] The parts by weight of raw materials of each component in table 4 embodiment 6 to embodiment 8 and comparative examples 1 to 3

[0037]

[0038]

[0039]

[0040] The quality inspection data of the air-permeable slow-rebound polyurethane foam plastics that table 5 embodiment 1 to 8 and comparative example 1 to 3 prepare

[0041]

[0042] As can be seen from Examples 1 to 8, the air permeability of the polyurethane foam of the present invention is as high as 332 L / min, indicating that the air permeability of the polyurethane foam is good; the depression recovery time of the present invention is con...

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Abstract

The invention relates to an air-permeable slow-rebound polyurethane foam plastic, and a preparation method and an application thereof. The problem of low air permeability of a slow-rebound polyurethane foam plastic in the prior art or the problems low air permeability and poor slow-rebound effect of the slow-rebound polyurethane foam plastic is / are mainly solved. The air-permeable slow-rebound polyurethane foam plastic comprises, by weight, 10-100 parts of a polyether polyol A, 1-50 parts of a polyether polyol B, 1-50 parts of a polyether polyol C, 40-80 parts of isocyanate, 1-5 parts of water, 0.2-0.8 part of an amine catalyst, 0.01-0.4 part of a tin catalyst and 0.5-3 parts of a foam stabilizer, wherein the hydroxyl value of the polyether polyol A is 60-230 mg KOH / g, the unsaturation degree is 0.01-0.2 mmol / g, the functionality is 2-4, and ethylene oxide accounts for 50-80% of the molecular weight of the polyether polyol A; the hydroxyl value of the polyether polyol B is 120-210 mg KOH / g, the unsaturation degree is 0.01-0.2 mmol / g, the functionality is 2-4, and the ethylene oxide accounts for 85-100% of the molecular weight of the polyether polyol B; and the hydroxyl value of thepolyether polyol C is 35-59 mg KOH, the unsaturation degree is 0.01-0.2 mmol / g, and the functionality is 2-4. The preparation method and the application of the product achieves good technical effects, and the preparation method can be used in industrial production of the air-permeable slow-rebound foam plastic.

Description

technical field [0001] The invention relates to a polyurethane foam and a preparation method thereof, in particular to a breathable slow-rebound polyurethane foam, a preparation method and application thereof. Background technique [0002] Polyurethane foam, especially polyurethane flexible foam, is widely used in automobiles, sofas, mattresses, packaging and other industries, because of its soft and elastic porous structure, it can provide a very comfortable human body experience. [0003] Polyurethane slow rebound foam has a relatively slow recovery speed, can remember the shape of the human body, effectively disperse the pressure of the human body, and provide a comfortable human body experience. It is also called memory foam and zero pressure sponge. The air permeability of polyurethane foam is expressed by foam air permeability, the higher the foam air permeability, the better the air permeability of polyurethane foam. The slow rebound effect of polyurethane slow rebou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08G101/00
CPCC08G18/6795C08G2110/0083
Inventor 祁青海万浩远茅金龙陈凤秋胡昭晖
Owner JIANGSU CHANGHUA POLYURETHANE SCI & TECH
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