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Polyurethane elastomer preform and production method of polyurethane elastomer

A technology of polyurethane elastomer and production method, which is applied in the production field of polyurethane elastomer prefabricated products and polyurethane elastomer, and can solve the problems of low light transmittance and high hardness of polyurethane elastomer

Active Publication Date: 2021-10-22
盛鼎高新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The light transmittance of the polyurethane elastomer is low, and the hardness is too high

Method used

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  • Polyurethane elastomer preform and production method of polyurethane elastomer
  • Polyurethane elastomer preform and production method of polyurethane elastomer
  • Polyurethane elastomer preform and production method of polyurethane elastomer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A1 and comparative example A1～A3

[0063] 100 parts by weight of the polymer polyol were vacuum dehydrated at 120° C. for 2 hours to obtain a dehydrated polymer polyol. Under the protection of nitrogen, mix the dehydrated polymer polyol, 11.27 parts by weight of BDO, 3.60 parts by weight of CHDM, 0.01 parts by weight of T12 and 0.2 parts by weight of IRGANOX 1010, and stir at 60°C and 800 rpm for 15 minutes to obtain a polymerization polyol component.

[0064] Under the protection of nitrogen, the temperature of HMDI was raised to 80° C., mixed with triazine compounds evenly, then mixed with 0.3 parts by weight of UV123, and stirred at 800 rpm for 15 minutes to obtain the isocyanate component.

[0065] At 60° C., the polymer polyol component and the isocyanate component were mixed, stirred at 1200 rpm for 3 minutes, and vacuum defoamed to obtain a polyurethane elastomer preform.

[0066] The details are shown in Table 1.

[0067] Table 1

[0068]

Embodiment B1 and comparative example B1～B4

[0074] The polyurethane elastomer preforms obtained in Example A1 and Comparative Examples A1-A4 were poured into a mold preheated to 110° C., and then placed in an oven at 110° C. for curing for 18 hours to obtain a polyurethane elastomer. The properties of the obtained polyurethane elastomer are shown in Table 2.

[0075] Table 2

[0076]

[0077] Note: Tear strength is tested by the method specified in GB / T528-2009;

[0078] The light transmittance is tested by the method specified in GB / T2410-2008;

[0079] The Shore A hardness is tested by the method specified in GB / T531.1-2009.

[0080] The difference between Comparative Example B1 and Example B1 lies in the structure of the triazine compounds used. It can be seen from Comparative Example B1 and Example B1 that the structure of the triazine compound has an important influence on the tear strength of the polyurethane elastomer, and the triazine compound of the present invention can significantly improve the tear str...

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Abstract

The invention discloses a polyurethane elastomer preform and a production method of a polyurethane elastomer. The preparation method comprises the following steps: mixing a polymer polyol component with an isocyanate component to obtain the polyurethane elastomer preform, wherein the polymer polyol component is prepared from polycaprolactone glycol, 1, 4-butanediol, 1, 4-cyclohexanedimethanol, a catalyst and a heat stabilizer; the isocyanate component is prepared from 4, 4 '-dicyclohexylmethane diisocyanate, a triazine compound and a light stabilizer. The polyurethane elastomer preform prepared by the method has higher tear strength and light transmittance after being cured, and is moderate in hardness.

Description

technical field [0001] The invention relates to a polyurethane elastomer prefabricated product and a production method of the polyurethane elastomer. Background technique [0002] Thermoplastic polyurethane elastomer has become one of the important thermoplastic elastomer materials due to its excellent performance and wide application. It has excellent mechanical properties, abrasion resistance, chemical resistance, hydrolysis resistance, high and low temperature resistance and mold resistance. These good properties make thermoplastic polyurethane widely used in many fields such as shoe materials, cables, clothing, automobiles, medicine and health, pipes, films and sheets. The linear thermoplastic polyurethane elastomer will creep under dynamic load, the internal heat generation is serious, the resilience is poor, and it is easy to age. Traditional micro-crosslinked polyurethane elastomers have unsatisfactory optical properties due to changes in the molecular stacking state...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/42C08G18/32C08G18/79C08G18/75
CPCC08G18/664C08G18/4277C08G18/3206C08G18/3212C08G18/794C08G18/758C08G18/724
Inventor 王超张辉
Owner 盛鼎高新材料有限公司
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