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Production process of polyester sole material for high-strength and bending-resistant sandals

A shoe sole material and production process technology, applied in the field of polyurethane, can solve problems such as economic loss, cracking of shoe soles, and weakening of tensile strength

Inactive Publication Date: 2019-01-01
XUCHUAN CHEM KUNSHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyester polyurethane has good mechanical properties, wear resistance, good strength, and excellent acid and alkali resistance; but the ester functional group of polyester polyurethane encounters water in the air, especially polyester sole materials for sandals are easier to contact Water, when the existing polyurethane material is used in a humid environment, the polyester polyurethane material is easy to degrade, the relative molecular weight is reduced, and the molecular rearrangement leads to weakened tensile strength, poor flexural performance, wear resistance and bending resistance The strength will also be reduced, which will lead to cracks in the soles made of polyester polyurethane materials, shorten the life of the soles, waste materials, and cause economic losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] (l) Preparation of component A of polyol mixture

[0021] Put 55g of polyether polyol, 25g of polymer polyol (POP), 5g of chain extender, 12g of dispersing aid, 1g of catalyst, 1.5g of foaming agent and 0.5g of foam stabilizer; heat up to 60-70°C in the container , fully mixed for 1-2 hours, after mixing evenly, then cooled to 35-40°C and discharged, sealed and stored.

[0022] (2) Preparation of component B of modified isocyanic acid prepolymer

[0023] React 80g of diisocyanic acid, 10g of polyether polyol with low degree of unsaturation and 10g of low-molecular-weight modifying agent reacted with isocyanic acid at 80-90°C for 2-3 hours, remove air bubbles in a vacuum, cool down naturally, and discharge. Analyze the free NCO content and keep it sealed.

[0024] (3) Keep the temperature of component A at 30-35°C, maintain the temperature of component B at 40-45°C, and control the isocyanate index of components A and B at 90-102, 40-50°C Mix well at low temperature, ...

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PUM

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Abstract

The invention discloses a production process of a polyester sole material for high-strength and bending-resistant sandals. The specific steps of the production process comprise: heating polyether polyol, polymer polyol, a chain extender, a dispersion auxiliary agent, a catalyst, a foaming agent and a foam stabilizer in a container, completely mixing, cooling after uniformly mixing, discharging thematerial, and carrying out sealed storage; and carrying out a reaction on diisocyanic acid, low unsaturation degree polyether polyol and the low molecular modifier of an isocyanic acid reaction for 2-3 h, carrying out vacuum gas bubble removing, naturally cooling, discharging the material, analyzing the free NCO content, and carrying out sealed storage. The production process of the present invention can be used for preparing polyester sole materials for high-strength and bending-resistant sandals.

Description

technical field [0001] The invention relates to the technical field of polyurethane, in particular to a production process of a high-strength and bending-resistant polyester sole material for sandals. Background technique [0002] Polyester polyurethane has good mechanical properties, wear resistance, good strength, and excellent acid and alkali resistance; but the ester functional group of polyester polyurethane encounters water in the air, especially polyester sole materials for sandals are easier to contact Water, when the existing polyurethane material is used in a humid environment, the polyester polyurethane material is easy to degrade, the relative molecular weight is reduced, and the molecular rearrangement leads to weakened tensile strength, poor flexural performance, wear resistance and bending resistance The strength will also be reduced, which will lead to cracks in the soles made of polyester polyurethane materials, shorten the service life of the soles, waste m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/32C08J9/08A43B13/04C08G101/00
CPCA43B13/04C08G18/3206C08G18/4018C08G18/42C08G18/4866C08G18/6607C08G2410/00C08G2110/0083
Inventor 董博郑建伟徐东峰
Owner XUCHUAN CHEM KUNSHAN