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Soft polyurethane foam with latex hand feel and preparation method of soft polyurethane foam

A soft foam, polyurethane technology, applied in the field of polyurethane, can solve the problem of not being able to directly obtain the effect of simulated latex, and achieve the effects of increased resilience, increased latitude, and improved hand feel

Active Publication Date: 2018-06-08
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN102875768A adopts vegetable oil polyol as raw material, has obtained a kind of emulation latex soft foam of high-density elastic polyurethane emulsion same feel, this method adopts more vegetable oil-based polyol, sacrifices foam physical property, has improved foam elasticity; CN203207611U and CN103222755A disclose The imitation latex sponge cushion, which is based on the conventional polyurethane sponge matrix, is perforated to improve air permeability and surface comfort, and can not directly obtain a relatively excellent imitation latex effect

Method used

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  • Soft polyurethane foam with latex hand feel and preparation method of soft polyurethane foam
  • Soft polyurethane foam with latex hand feel and preparation method of soft polyurethane foam
  • Soft polyurethane foam with latex hand feel and preparation method of soft polyurethane foam

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]The polyether polyol component includes: 50 parts of polyether polyol A-1 (the initiator is glycerol and pentaerythritol with a weight ratio of 1:1, the nominal functionality is 3.4, the hydroxyl value is 10mgKOH / g, and the propylene oxide content is 85wt %, the content of ethylene oxide is 15wt% (among them, the ethylene oxide mixed with propylene oxide and randomly copolymerized accounts for 10wt%, and the ethylene oxide added to the system at the later stage of polymerization for primary hydroxyl end-capping accounts for 5wt%), and the primary hydroxyl end-capping rate is 70%) ; 30 parts of polyether polyol B-1 (starting agent is glycerol, nominal functionality 3, hydroxyl value 200mgKOH / g, propylene oxide content 100wt%); 20 parts of polyether polyol C-1 (starting The agent is glycerol and 1,2-propanediol with a weight ratio of 8:2, a nominal functionality of 2.8, a hydroxyl value of 20mgKOH / g, a content of 50wt% propylene oxide, and a content of 50wt% ethylene oxide ...

Embodiment 2

[0048] The polyether polyol component includes: 95 parts of polyether polyol A-2 (the initiator is glycerol and trimethylolpropane with a weight ratio of 8:2, the nominal functionality is 3.0, and the hydroxyl value is 40 mgKOH / g, The content of propylene oxide is 60wt%, and the content of ethylene oxide is 40wt% (among them, ethylene oxide randomly copolymerized after mixing with propylene oxide accounts for 35wt%, and ethylene oxide added to the system at the later stage of polymerization for primary hydroxyl end-capping accounts for 5wt%), primary hydroxyl end-blocking rate 95%); 4 parts of polyether polyol B-2 (initiator is trimethylolpropane, nominal functionality 3.0, hydroxyl value 400mgKOH / g, propylene oxide content 100wt%); 1 part of polyether polyol C-2 (the initiator is glycerol and pentaerythritol with a weight ratio of 8:2, the nominal functionality is 3.1, the hydroxyl value is 50 mgKOH / g, the ethylene oxide content is 100%, and the primary hydroxyl end-capping ra...

Embodiment 3

[0057] The polyether polyol component includes: 70 parts of polyether polyol A-3 (starter is glycerol, nominal functionality 3.0, hydroxyl value 20mgKOH / g, propylene oxide content 80wt%, oxyethylene content 20wt% ( Among them, ethylene oxide randomly copolymerized after mixing with propylene oxide accounts for 15 wt%, and ethylene oxide added to the system at the later stage of polymerization for primary hydroxyl end-capping accounts for 5 wt%), and the primary hydroxyl end-capping rate is 80%); 20 parts of polyether polyol B -3 (starter is glycerol, nominal functionality 3, hydroxyl value 230mgKOH / g, propylene oxide content 100wt%); 10 parts of polyether polyol C-3 (starter is weight ratio 9:1 Glycerol and 1,2-propanediol, nominal functionality 2.9, hydroxyl value 30mgKOH / g, propylene oxide content 40wt%, ethylene oxide content 60wt% (among them, ethylene oxide mixed with propylene oxide and randomly copolymerized accounts for 48wt% , the ethylene oxide added to the system at...

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Abstract

The invention discloses soft polyurethane foam with latex hand feel and a preparation method of the soft polyurethane foam. A polyol combination for preparing the polyurethane soft foam comprises thefollowing components: polyether polyol, water, a physical foaming agent, an amine catalyst, a tin catalyst, an organosilicon surfactant and a hand feel promoter, wherein the surface hardness of the polyurethane soft foam is lower than the shore hardness 10A, and the resiliency is higher than 50%. The problems that low surface hardness, soft hand feel and high resiliency cannot be realized simultaneously due to coexistence of high resiliency and high surface hardness in the prior art is solved with adoption of the polyol combination and the hand feel promoter.

Description

technical field [0001] The invention relates to the field of polyurethane, in particular to a flexible polyurethane foam with latex feel. Background technique [0002] Polyurethane flexible foam, referred to as polyurethane soft foam, is a kind of flexible polyurethane foam with certain elasticity. It is the most widely used polyurethane product in polyurethane products. [0003] Polyurethane soft foam mostly has an open-cell structure, which has low density, good elastic recovery, sound absorption, breathability, heat preservation and other properties. It is mainly used as cushion materials for furniture, mattresses, and vehicle seat cushions. Soft foam is used as filter material, sound insulation material, shockproof material, decoration material, packaging material and heat insulation material, etc. [0004] Latex bedding, especially natural latex bedding, is a relatively new and highly sought after product in household bedding in recent years. This type of bedding has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08J9/14C08K3/26C08G101/00
CPCC08G18/4816C08G18/4829C08G18/4833C08G18/4837C08G2101/00C08J9/141C08J9/145C08J2203/14C08J2203/142C08J2375/08C08K3/26C08K2003/265C08K2201/003
Inventor 叶天鞠昌迅王竞辉张琴花杨洗
Owner WANHUA CHEM GRP CO LTD
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