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Slow-rebound polyether polyurethane sponge

A technology of polyurethane sponge and slow rebound polyether, which is applied in the field of polyurethane sponge, can solve the problems of low production efficiency, complicated preparation method, softness and hardness and rebound time to be improved, and achieve slow rebound time, high-quality combination, Realize the effect of soft and hard performance

Inactive Publication Date: 2012-08-22
德清舒华泡沫座椅有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation method of the existing polyether polyurethane sponge is complicated, the production efficiency is low, and the softness and rebound time all need to be improved

Method used

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  • Slow-rebound polyether polyurethane sponge
  • Slow-rebound polyether polyurethane sponge
  • Slow-rebound polyether polyurethane sponge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] raw material:

[0051] The first polyol: 20 parts by weight; a polymer of ethylene glycol and propylene glycol, with a functionality of 3 and a hydroxyl value of 45 mgKOH / g; the second polyol: a copolymerized polyol of trimethylolpropane and butylene oxide 90 parts by weight, EO content greater than 60%, hydroxyl value 3mgKOH / g; 8 parts by weight of MDI isocyanate; 3 parts by weight of foaming agent formed by cyclopentane and n-butane; 2 parts of triethylenediamine; B8002 surfactant; 0.2 parts by weight of sulfonate flame retardant; 0.2 parts by weight of room temperature vulcanized silicone rubber toughening agent.

[0052] Preparation: Prepare the first polyol and the second polyol in the first raw material tank according to the above raw material ratio, prepare other raw materials in the second raw material tank; stir and mix the raw materials in the first raw material tank in the first mixer Obtain the first mixed liquid evenly, stir and mix the raw materials in th...

Embodiment 2

[0056] raw material:

[0057] The first polyol: a polymer of 85 parts by weight of ethylene glycol and propylene glycol, with a functionality of 3 and a hydroxyl value of 99 mgKOH / g; the second polyol: a copolymerized polyol of trimethylolpropane and butylene oxide 10 parts by weight, EO content 80%, hydroxyl value 22mgKOH / g; 30 parts by weight of MDI isocyanate; 6 parts by weight of foaming agent formed by cyclopentane, n-butane, 5-15% sodium bicarbonate solution; 6 parts of amine; 0.5 parts by weight of sulfonate flame retardant; 0.8 parts by weight of room temperature vulcanized silicone rubber toughening agent.

[0058]

[0059] preparation:

[0060] Prepare the first polyol and the second polyol in the first raw material tank according to the above raw material ratio, prepare other raw materials in the second raw material tank; stir and mix the raw materials in the first raw material tank in the first mixer to obtain For the first mixed liquid, the raw materials in the...

Embodiment 3

[0063] The first polyol: 30 parts by weight of a polymer of ethylene glycol and propylene glycol, with a functionality of 3 and a hydroxyl value of 50 mgKOH / g;

[0064] The second polyol: 60 parts by weight of copolyol with trimethylolpropane and butylene oxide formed by double metal cyanide complex catalyst, EO content 68%, hydroxyl value 8mgKOH / g; MDI isocyanate 15 Parts by weight; 5 parts by weight of cyclopentane foaming agent; 3 parts by weight of triethylenediamine sulfonate flame retardant; 0.5 parts by weight of room temperature vulcanized silicone rubber toughening agent.

[0065]

[0066] preparation:

[0067] Prepare the first polyol and the second polyol in the first raw material tank according to the above raw material ratio, prepare other raw materials in the second raw material tank; stir and mix the raw materials in the first raw material tank in the first mixer to obtain For the first mixed liquid, the raw materials in the second raw material tank are stirre...

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Abstract

The invention relates to polyurethane sponge, in particular to slow-rebound polyether polyurethane sponge, which comprises, by weight, 20-85 parts of first polyhydric alcohol, 10-90 parts of second polyhydric alcohol, 8-30 parts of MDI (diphenylmethane diisocyanate), foaming agent, catalyst, surface active agent, flame retardant and 0.2-0.8 part of silicon rubber toughening agent, wherein the first polyhydric alcohol refers to polymer of ethylene glycol and propylene glycol, the degree of functionality of the first polyhydric alcohol is 3, and the hydroxyl value of the first polyhydric alcohol is 45-99mgKOH / g; and the second polyhydric alcohol refers to copolymerized polyol of trimethylolpropane and epoxy butane, the EO (ethylene oxide) content of the second polyhydric alcohol is higher than 60%, and the hydroxyl value of the second polyhydric alcohol is 3-22mgKOH / g. The slow-rebound polyether polyurethane sponge is slow in rebound time, proper in hardness and less susceptible to temperature.

Description

technical field [0001] The invention relates to a polyurethane sponge, in particular to a slow-rebound polyether polyurethane sponge. [0002] Background technique [0003] Sponge generally refers to foaming materials, and foamed products of resin, rubber, and plastic are called sponges. Polyurethane sponge is foamed polyurethane material. Polyurethane not only has the elasticity of rubber, but also has the strength of plastic and excellent processing performance, and can be used to prepare polyurethane slow rebound foam (soft polyurethane foam). [0004] In theory, the resilience of polyurethane foam is related to its phase separation degree and glass transition temperature. By selecting raw materials and adjusting the glass transition temperature of the foam to the service temperature, and reducing the phase separation degree of the foam, a slow rebound foam can be obtained. The usual process is to mix low hydroxyl value soft foam polyether with higher hydroxyl value po...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08L75/08C08L83/04C08K5/42C08J9/14C08J9/08C08G101/00
Inventor 邱玲娣李同松卢伟
Owner 德清舒华泡沫座椅有限公司
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