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Preparing method of super-soft polyurethane flexible foam

A kind of polyurethane soft foam, super soft technology, applied in the field of polyurethane application, can solve the problem of increasing the cost of foam, and achieve the effects of low production cost, good tear strength and fine cells

Inactive Publication Date: 2016-04-20
甘肃银光聚银化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latter two methods can obtain super soft foam, and can obtain medium and high density super soft foam by adjusting the formula, but the cost of foam is increased due to the use of special polyether polyol or softener

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A supersoft polyurethane soft foam is formed by foaming the following raw materials, and the parts by weight of each component are:

[0023] Polyether 3010: 100 parts

[0024] Silicone oil L-580: 1.5 parts

[0025] Catalyst A-1: ​​0.12 parts

[0026] A-1 is a common commercially available product, which is a solution prepared by mass fraction of 70% bis(dimethylaminoethyl) ether and 30% dipropylene glycol (DPG).

[0027] Catalyst A-33: 0.24 parts

[0028] A-33 is a common commercial product, a liquid catalyst containing 33% triethylenediamine.

[0029] Catalyst T-9 (stannous octoate): 0.2 parts

[0030] Diethanolamine: 0.8 parts

[0031] Water: 5.0 parts

[0032] Toluene diisocyanate TDI-100: 38.3 parts

[0033] The foaming method is as follows: at an ambient temperature of 23°C, weigh the polyether polyol, foam stabilizer, amine catalyst, tin catalyst, and crosslinking agent according to the formula, add them to the material bucket, mix and stir with a mixer for...

Embodiment 2

[0036] A supersoft polyurethane soft foam is formed by foaming the following raw materials, and the parts by weight of each component are:

[0037] Polyether TMD-5000: 100 parts

[0038] Silicone oil L-633: 1.0 parts

[0039] Catalyst triethanolamine: 1 part

[0040] Catalyst T-9 (stannous octoate): 0.2 parts

[0041] Diethanolamine: 1.1 parts

[0042] Water: 4.9 parts

[0043] Toluene diisocyanate TDI-100: 31.4 parts

[0044] The foaming method is as follows: at an ambient temperature of 20°C, weigh the polyether polyol, foam stabilizer, amine catalyst, tin catalyst, and crosslinking agent according to the formula, add them to the material bucket, mix and stir with a mixer for 20 seconds, let stand for 5 minutes, and then Pour the weighed toluene diisocyanate into the material mixing barrel, the temperature of the material is 25°C, and after stirring rapidly for 5s, pour the mixed material into the foaming box for foaming, the reaction time is 141s, and cut it into the r...

Embodiment 3

[0047] A supersoft polyurethane soft foam is formed by foaming the following raw materials, and the parts by weight of each component are:

[0048] Polyether 5613: 100 parts

[0049] Silicone oil L-580: 1.4 parts

[0050] Catalyst triethanolamine: 0.31 parts

[0051] Catalyst dibutyltin dilaurate: 0.3 parts

[0052] Diethanolamine: 1.5 parts

[0053] Water: 5.1 parts

[0054] Toluene diisocyanate TDI-100: 39 parts

[0055] The foaming method is as follows: at an ambient temperature of 25°C, weigh the polyether polyol, foam stabilizer, amine catalyst, tin catalyst, and cross-linking agent according to the formula, add them to the material bucket, mix and stir with a mixer for 30 seconds, let stand for 4 minutes, and then Pour the weighed toluene diisocyanate into the material mixing barrel, the temperature of the material is 30°C, and after stirring rapidly for 5s, pour the mixed material into the foaming box for foaming, the reaction time is 90s, and cut it into the requi...

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Abstract

The invention relates to the field of application of polyurethane, in particular to a preparing method of super-soft polyurethane flexible foam. The environment temperature is controlled to be 20-25 DEG C, polyether polyol, a foam stabilizer, an amine catalyst, a tin catalyst and a cross-linking agent are weighed according to the formula amount and then added into a material bucket, a stirring machine is used for carrying out stirring and mixing for 20 s-30 s, and standing is carried out for 3 min-5 min; then weighed toluene diisocynate is poured into a material mixing bucket, the temperature of the materials is controlled to be 20-30 DEG C, timing is started, quick stirring is carried out for 5 s-8 s, then the mixed materials are poured into a foaming box for foaming, the reaction time ranges from 90 s to 150 s, and the product is cut into needed dimension after curing. The prepared super-soft polyurethane flexible foam is low in production cost, pores of the obtained super-soft polyurethane flexible foam are fine, and the super-soft polyurethane flexible foam is good in tearing strength, high in rebounding rate, soft in touch and more suitable for the fields with the high requirement for the soft degree of foam.

Description

technical field [0001] The invention belongs to the field of polyurethane application, and in particular relates to a preparation method of supersoft polyurethane soft foam. Background technique [0002] In recent years, with the continuous improvement of people's living standards, the performance requirements of polyurethane soft foam are also getting higher and higher. Among them, due to its superior performance and feel, ultra-soft polyurethane foam has achieved relatively large development in the automobile and furniture industries, and is favored in high-end sofas, pillows, beds, automobile accessories, sports and fitness equipment, etc. For example, if a leather sofa wants to meet the requirements of comfort, its inner surface is generally required to be covered with a layer of 4cm thick polyurethane soft foam with good elasticity and super softness. [0003] At present, the main methods for preparing ultra-soft polyurethane foam are as follows: [0004] (1) Add phys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/76C08G18/32
CPCC08G18/3275C08G18/6688C08G18/7614C08G2110/0008C08G2110/0083
Inventor 王德秋徐进王萍程静梁立新毛志红张义新付振波边祥成张建强
Owner 甘肃银光聚银化工有限公司
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