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Silicate/isocyanate composite elastomer and preparation method thereof

A technology of isocyanate and diisocyanate, which is applied in the field of silicate/isocyanate composite elastomer and its preparation, achieves the effects of novel molecular structure, good flame retardancy and simple process method

Active Publication Date: 2021-07-13
绿健体育产业科技(山西)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a silicate / isocyanate composite elastomer and its preparation method for the problem that one of the components must be polyether or polyester polyol plus chain extender in the production process of polyurethane elastomer.

Method used

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  • Silicate/isocyanate composite elastomer and preparation method thereof
  • Silicate/isocyanate composite elastomer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A silicate / isocyanate composite elastomer described in this embodiment includes the following material components in parts by weight:

[0041] A component material: 88 parts of sodium silicate water glass, 5 parts of ethylene glycol, 5 parts of glycerol, 2 parts of triethanolamine;

[0042] B component materials: 80 parts of polyurethane prepolymer, 14 parts of PAPI, 3 parts of dimethyl carbonate, 0.5 parts of BYK-060 defoamer, 2.5 parts of dibutyl phthalate.

[0043] The sodium silicate water glass has a modulus of 2.2 to 2.4 and a density of 1.4 to 1.5 g / cm 3 (20°C);

[0044] The preparation method of described polyurethane prepolymer is as follows:

[0045] Weigh 240 parts of polyether polyol N210 and dehydrate at 120°C and -0.09MPa for 2 hours. When the temperature drops to 50°C, add 90 parts of diisocyanate MDI-50 and react at 50°C for 1 hour, then After heating up to 80°C, react for another 3 hours, and after defoaming for 30 minutes, a prepolymer with -NCO conte...

Embodiment 2

[0056] A silicate / isocyanate composite elastomer described in this embodiment includes the following material components in parts by weight:

[0057] A component material: 97 parts of sodium silicate water glass, 1 part of ethylene glycol, 1 part of glycerin, and 1 part of triethanolamine;

[0058] B component materials: 85 parts of polyurethane prepolymer, 5 parts of PAPI, 5 parts of dimethyl carbonate, 0.5 parts of BYK-060 defoamer, 4.5 parts of dibutyl phthalate.

[0059] The sodium silicate water glass has a modulus of 2.2 to 2.4 and a density of 1.4 to 1.5 g / cm 3 (20°C);

[0060] The preparation method of described polyurethane prepolymer is as follows:

[0061] Weigh 240 parts of polyether polyol N210 and dehydrate at 120, 0.09MPa for 2 hours. When the temperature drops to 50°C, add 113 parts of diisocyanate MDI-100 and react at 50°C for 1 hour, then raise the temperature to After 80°C, react for another 3 hours, and after defoaming for 30 minutes, a prepolymer with a...

Embodiment 3

[0072] A silicate / isocyanate composite elastomer described in this embodiment includes the following material components in parts by weight:

[0073] A component material: 90 parts of potassium silicate water glass, 4 parts of ethylene glycol, 4 parts of glycerol, 2 parts of triethanolamine;

[0074] B component materials: 81 parts of polyurethane prepolymer, 11 parts of PAPI, 4 parts of dimethyl carbonate, 0.5 parts of BYK-060 defoamer, 3.5 parts of dibutyl phthalate.

[0075] The potassium silicate water glass has a modulus of 3.0 to 3.3 and a density of 1.3 to 1.4 g / cm 3 (20°C);

[0076] The preparation method of described polyurethane prepolymer is as follows:

[0077] Weigh 240 parts of polyether polyol N210, and dehydrate at 120°C and 0.09MPa for 2 hours. When the temperature drops to 50°C, add 95 parts of diisocyanate MDI-50, react at 50°C for 1 hour, and then heat up After reaching 80°C, react for another 3 hours, and after defoaming for 30 minutes, a prepolymer wit...

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Abstract

The invention relates to a silicate / isocyanate composite elastomer and a preparation method thereof, and belongs to the technical field of polymer elastomers. The composite elastomer comprises a component A and a component B, wherein the component A comprises water glass, ethylene glycol, glycerol and triethanolamine; and the component B comprises a polyurethane prepolymer, PAPI, dimethyl carbonate, a defoaming agent and dibutyl phthalate. The specific preparation method comprises the following steps: step 1, preparing the component A: sequentially adding the ethylene glycol, the glycerol and the catalyst triethanolamine into the water glass at 15-25 DEG C, uniformly stirring, and standing to obtain the component A; step 2, preparing the component B: uniformly mixing the polyurethane prepolymer and PAPI at 15-25 DEG C to obtain a solution B1, sequentially adding a defoaming agent, dimethyl carbonate and dibutyl phthalate into the solution B1, and uniformly stirring to obtain the component B; and step 3, respectively uniformly shaking the component A prepared in the step 1 and the component B prepared in the step 2 at 15-25 DEG C, stirring and mixing according to a mass ratio, pouring into a corresponding mold, curing and curing to obtain the silicate / isocyanate composite elastomer.

Description

Technical field [0001] The invention belongs to the technical field of polymer elastomers, and specifically relates to a silicate / isocyanate composite elastomer and a preparation method thereof. Background technique [0002] At present, polyurethane elastomers are mainly prepared by reacting polyether polyol or polyester polyol with isocyanate and chain extender. The average functionality of oligomer polyol is usually 2 to 3, and the molecular weight is 400 to 6000, and the commonly used ones are 1000 to 1000. 3000. There are many types of isocyanates, including toluene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, etc. Commonly used chain extenders include glycols such as ethylene glycol, propylene glycol, butylene glycol, etc.; diamines include 3,3'-dichloro-4,4'-diaminodiphenylmethane (MOCA), diethyl Toluenediamine, 3,5-dimethylthiotoluenediamine, etc. In the process of preparing polyurethane elastomer, polyether polyo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/10C08G18/66C08G18/48C08G18/32C08G18/38C08G18/76
CPCC08G18/10C08G18/6674C08G18/6677C08G18/6688C08G18/4825C08G18/7664C08G18/3206C08G18/3281C08G18/3895
Inventor 赵文森李万捷梁凌杰赵晓建陈峰阳焦文哲武志鹏王冬冬田莉霞李晋王彦芳张海舰
Owner 绿健体育产业科技(山西)有限公司