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A kind of polyurethane foam insole and preparation method thereof

A polyurethane and insole technology, which is applied in insoles, footwear, clothing, etc., can solve the problems of poor elongation of insoles, insole support performance and resilience performance can not be satisfied at the same time, easy to tear and other problems, to improve the rebound rate , Excellent tensile strength performance, and the effect of uniform dispersion of micropore diameter

Active Publication Date: 2022-07-29
广东足迹鞋业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned related technologies, due to the poor elongation rate of the insole made of EVA material, the insole is prone to tearing after the foot presses the insole for a long time, and the support performance and rebound performance of the insole cannot be satisfied at the same time. Insole that improves resilience while supporting performance

Method used

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  • A kind of polyurethane foam insole and preparation method thereof
  • A kind of polyurethane foam insole and preparation method thereof
  • A kind of polyurethane foam insole and preparation method thereof

Examples

Experimental program
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Effect test

preparation example 1-3

[0054] A polyether-modified diphenylmethane diisocyanate is prepared by the following steps:

[0055]S01. Heat and melt 4.4'-diphenylmethane diisohydrogen ester at the temperature shown in Table 2, and then control the temperature to be below 50°C and pump the melted 4.4'-diphenylmethane diisohydrogen ester into The reaction kettle was added with polyether polyol under the temperature conditions shown in Table 2, heated to the temperature shown in Table 2, and the stirring time was shown in Table 2, followed by insulation, and the insulation time was shown in Table 2, and the reaction obtained -NCO base A prepolymer with a group content of 15%-25%, wherein the molecular weight of the polyether polyol C is 5000, the functionality is 3, and the hydroxyl value is 34 mgKOH / g;

[0056] S02. Mix the prepolymer with carbodiimide-uretonimide modified 4.4'-diphenylmethane diisocyanate, and the stirring time is as shown in Table 2, that is, the content of -NCO group is 20% -25% polyeth...

Embodiment 1-3

[0061] A polyurethane foam insole is prepared by the following steps:

[0062] S1. Weigh the required polyether polyol A, polyether polyol B and polyether polyol C and mix them into a polyether polyol composition material in a mass ratio of 5:1:4. Add color paste, triethylenediamine, rubber powder, polyethylene glycol ether and non-hydrolyzable silicone oil surfactant to the alcohol composition while stirring, and stir evenly to obtain a premix;

[0063] S2. Add the weighed modified isocyanate to the premix, stir at a rate of 500 rpm / s, the stirring time is shown in Table 3, and then inject into the mold. The mold temperature conditions are shown in Table 3, and the start-up time is shown in Table 3. As shown in Table 3, the mold is closed after 120s of milky whiteness, and the mold setting time is shown in Table 3, and then the molded insole is taken out, and the material can be cut after 24 hours of heat dissipation to obtain a polyurethane foam insole;

[0064] Among them,...

Embodiment 4

[0069] A polyurethane foam insole, the difference from Example 3 is that in step S1, 15kg of PU powder, PU powder and color paste, triethylenediamine, rubber powder, polyethylene glycol and non-hydrolyzable organic The silicone oil surfactant was added simultaneously.

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Abstract

The application relates to the field of insole, and specifically discloses a polyurethane foam insole and a preparation method thereof. The insole comprises polyether polyol composition, modified isocyanate, non-hydrolyzable silicone oil surfactant, triethylene diamine, color paste, water, ethylene glycol, rubber powder, polyethylene glycol ether; its preparation method is: S1. Weigh the required polyether polyol composition, add color paste, triethylene diamine, rubber powder, polyglycol ether and non-hydrolyzable silicone oil surfactant, and stir evenly to obtain a premix; S2. Add the weighed modified isocyanate into the premix, then inject it into the mold, set the mold in the mold, and cut the material after heat dissipation to obtain a polyurethane foam insole. The insole prepared by the present application has superior tensile strength, and improves the resilience performance of the insole while ensuring the tear-resistant support performance.

Description

technical field [0001] The present application relates to the technical field of insoles, and more particularly, to a polyurethane foam insole and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, the demand for footwear on the market is increasing day by day, and the requirements for the comfort, wear resistance, resilience and other functions of footwear are increasing. The current insole is generally made of EVA, PU foam sponge or silicone, and the insole made of EVA material has soft performance and high comfort when worn. [0003] In view of the above-mentioned related technologies, due to the poor elongation of the insole made of EVA, the foot is prone to tearing after pressing the insole for a long time, and the support performance and resilience performance of the insole cannot be satisfied at the same time. Insole that improves resilience while supporting performance. SUMMARY OF THE INVENTION [0004] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08L75/04C08L21/00C08L3/08C08L1/28C08G18/48C08J9/00A43B17/00A43B17/02
CPCC08J9/0061C08G18/4812A43B17/003A43B17/02C08J2375/08C08J2475/04C08J2421/00C08J2403/08C08J2401/28
Inventor 张鸿
Owner 广东足迹鞋业有限公司
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