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A kind of preparation method of polyurethane composition for shoes and its molded body

A polyurethane and composition technology, applied in the field of polymer materials, can solve the problems of affecting material properties, poor compatibility of polymer materials, and difficulty in achieving ideal results, and achieves short foaming molding time, excellent antistatic performance, The effect of high production efficiency

Active Publication Date: 2022-07-01
ZHEJIANG HUAFON NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although graphene oxide contains more active groups and has stronger reactivity than graphene, it still maintains the small size effect and surface effect of layered nanomaterials similar to graphene. The compatibility effect is still very poor, which will affect the performance of the material itself
Functional shoes used in the above fields not only have clear requirements for antistatic properties, but also have certain requirements for the physical and mechanical properties of the sole materials such as aging resistance, anti-skid, wear resistance, and folding resistance. In addition, they must also take into account the wearing comfort. Anti-static functional shoes on the market are difficult to achieve the desired effect

Method used

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  • A kind of preparation method of polyurethane composition for shoes and its molded body
  • A kind of preparation method of polyurethane composition for shoes and its molded body
  • A kind of preparation method of polyurethane composition for shoes and its molded body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] To prepare Component A:

[0034] Calculated in parts by weight, 90 parts by weight of polyethylene glycol 1,6-adipate polyol (average number average molecular weight 1500, hydroxyl value 74.8), 10 parts by weight of poly1,6-adipic acid Trimethylolpropane diethylene glycol ester polyol (average number average molecular weight 1870, hydroxyl value 62.1), 3 parts by weight of ethylene glycol, in the presence of 0.35 parts by weight of water and 0.35 parts by weight of Dow Corning DC-193, at 40°C After fully mixing for 2 hours, reduce to normal temperature to obtain A component;

[0035] To prepare Part B:

[0036] Calculated in parts by weight, 43 parts by weight of 4,4'-MDI and 10 parts by weight of liquefied MDI will be added to the reaction vessel under nitrogen protection, and 5 parts by weight of dried graphene oxide 2 will be slowly added step by step. Reaction for 1 hour to form a cloudy liquid, add 30 parts by weight of polyethylene glycol 1,6-adipate polyol (ave...

Embodiment 2

[0042] To prepare Component A:

[0043] Calculated in parts by weight, 35 parts by weight of polyethylene glycol 1,6-adipate polyol (average number average molecular weight 1500, hydroxyl value 74.8), 15 parts by weight of poly1,6-adipic acid Trimethylolpropane diethylene glycol ester polyol (average number average molecular weight 1870, hydroxyl value 62.1), 50 parts by weight of polyethylene 1,6-adipate 1,4-butanediol ester polyol (average number average molecular weight 1870, hydroxyl value 62.1) Number-average molecular weight 2000, hydroxyl value 56.1), 5 parts by weight of diethylene glycol, in the presence of 0.35 parts by weight of water and 0.50 parts by weight of Dow Corning DC-193, after fully mixing at 40 ° C for 2 hours, it was lowered to room temperature to obtain Group A Minute;

[0044] To prepare Part B:

[0045] Calculated in parts by weight, 65 parts by weight of 4,4'-MDI will be added and placed in a nitrogen-protected reaction vessel, 10 parts by weight ...

Embodiment 3

[0051] To prepare Component A:

[0052] Calculated in parts by weight, 50 parts by weight of polyethylene glycol 1,6-adipate polyol (average number average molecular weight 1500, hydroxyl value 74.8), 10 parts by weight of poly1,6-adipic acid Trimethylolpropane diethylene glycol ester polyol (average number average molecular weight 1870, hydroxyl value 62.1), 40 parts by weight of polyethylene 1,6-adipate 1,4-butylene glycol ester polyol (average number average molecular weight 1870, hydroxyl value 62.1) Number-average molecular weight 2000, hydroxyl value 56.1), 3 parts by weight of diethylene glycol, in the presence of 0.45 parts by weight of water and 1.05 parts by weight of Dow Corning DC-193, after fully mixing at 30 ° C for 4 hours, it was lowered to room temperature to obtain Group A Minute;

[0053] To prepare Part B:

[0054] Calculated in parts by weight, 75 parts by weight of 4,4'-MDI and 5 parts by weight of liquefied MDI will be added in a reaction vessel protec...

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Abstract

The present invention relates to a preparation method of a polyurethane composition for shoes and a molded body thereof. The polyurethane composition for shoes includes separated A component, B component and C component. After mixing the various components, it is prepared by foaming molding: the A and C components are mixed uniformly at a ratio of 100:1 to 100:3 by weight at 40 to 60 ° C to obtain a mixture of components A and C, and the mixture is controlled. The ratio of the number of moles of active hydrogen in the component to the number of moles of ‑NCO in component B is 1:1. After mixing in a two-component casting machine, it is injected into a mold at 40-60°C for 2-5 minutes to form, and demolded. The polyurethane molded body is obtained by post-curing in an oven at 60-70° C. for 24 hours. The polyurethane molded body prepared by the product can be used to prepare the sole components of labor insurance shoes and safety shoes, has excellent antistatic properties, and significantly improves its mechanical properties such as tensile strength, tear strength and wear resistance.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a preparation method of a polyurethane composition for shoes, a polyurethane molded body obtained from the polyurethane composition, and applications thereof. Background technique [0002] Different from the daily wear shoes that focus on beauty and comfort, functional shoes used in some special occasions pay more attention to safety. For example, in the dust-free production workshop of automobile or electronic manufacturing, safety shoes are required to be antistatic to avoid electrostatic adsorption. Dust, destroying the dust-free environment; chemical production workshops have a large number of flammable and explosive chemicals, and the electrostatic sparks generated by the friction of the soles will cause the explosion of dangerous chemicals, so they also have the same antistatic requirements. [0003] After micro-foaming, the polyurethane material has the character...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/42C08G18/32C08K3/04C08J9/08A43B13/04C08G101/00
CPCC08G18/4202C08G18/4238C08G18/4241C08G18/3206C08G18/6607C08G18/7671C08G18/3228C08K3/042A43B13/04C08G2410/00
Inventor 章芬成赵叶宝蔡万东章海飞池雨
Owner ZHEJIANG HUAFON NEW MATERIALS CO LTD
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