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Biobased micro-porous polyurethane material and preparation method thereof

A polyurethane material and bio-based technology, applied in the field of bio-based microporous polyurethane materials and preparation, can solve the problems of poor heat resistance, weather resistance and antistatic properties, achieve low surface hydroxyl activity, increase internal friction, and benefit The effect of product performance

Inactive Publication Date: 2011-11-23
安徽绿能技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of existing microcellular polyurethane elastomers such as poor heat resistance, weather resistance, and antistatic properties, the present invention provides a cost-effective bio-based microcellular polyurethane modified by nanofibrous wollastonite The material and its preparation method can not only enhance toughness and improve its heat resistance, impact resistance and fatigue resistance, but also save production cost

Method used

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  • Biobased micro-porous polyurethane material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Component A includes the following raw materials:

[0040] 22 parts of polypropylene glycol-glycerol ether,

[0041] 4.2 parts of ethylene glycol,

[0042] 2.6 parts of 3,3-dichloro-4,4-diaminodiphenylmethane,

[0043] 0.25 parts of water,

[0044] 0.28 parts of silicone oil,

[0045] Triethylenediamine (A33) / stannous octoate 0.14 / 0.06 parts;

[0046] Component B includes the following raw materials:

[0047] Nano wollastonite 2.3 parts,

[0048] Bio-based polyether polyol C (water content less than 0.1%) 24.3 parts,

[0049] 42 parts of diphenylmethane diisocyanate.

[0050] The specific preparation method is as follows:

[0051] A component preparation process: 22 parts of polypropylene glycol-glycerol ether (functionality is 3, average molecular weight is 2950, ​​its model is: EPG-217, manufacturer is: Yantai Guangshun Chemical Products Co., Ltd., solid content: 99.9%.), 4.2 parts of ethylene glycol, 2.6 parts of 3,3,3-dichloro-4,4,-diaminodiphenylmethane, 0...

Embodiment 2

[0056] Component A includes the following raw materials:

[0057] 30 parts of polypropylene glycol-glycerol ether,

[0058] 5 parts of propylene glycol,

[0059] 2 parts of dimethylthiotoluenediamine,

[0060] 0.2 parts of water,

[0061] 0.2 parts of silicone oil,

[0062] Triethylenediamine / dibutyltin dilaurate 0.17 / 0.08 parts;

[0063] Component B includes the following raw materials:

[0064] Nano wollastonite 3.5 parts,

[0065] Bio-based polyether polyol C (water content less than 0.1%) 24 parts,

[0066] 35 parts of diphenylmethane diisocyanate.

[0067] The specific preparation method is as follows:

[0068] A component preparation process: 30 parts of polypropylene glycol-glycerol ether (functionality is 3, average molecular weight is 4000), 5 parts of propylene glycol, 2 parts of dimethylthiotoluenediamine, 0.2 parts of water, 0.2 parts Silicone oil, 0.17 parts of 33% triethylenediamine solution (A33) and 0.08 parts of dibutyltin dilaurate were stirred at 20...

Embodiment 3

[0072] Component A includes the following raw materials:

[0073] 40 parts of polypropylene glycol,

[0074] 3.5 parts of 1,4-butanediol,

[0075] Dimethylthiochlorophenylenediamine 1.5 parts,

[0076] 0.4 parts of water,

[0077] 0.35 parts of silicone oil,

[0078] Triethylenediamine / dibutyltin dilaurate 0.23 / 0.07 parts;

[0079] Component B includes the following raw materials:

[0080] Nano wollastonite 6 parts,

[0081] Bio-based polyether polyol C (water content less than 0.1%) 17.95 parts,

[0082] 30 parts of liquefied diphenylmethane diisocyanate.

[0083] Its concrete preparation method is with embodiment 2.

[0084] The materials described are tested according to the following standards:

[0085] ① Determination of isocyanate group content in HG / T 2409-1992 polyurethane prepolymer;

[0086] ②GB / T 10802-1989 flexible polyurethane foam;

[0087] ③GB / T 10800-1989 Rigid polyurethane foam for building heat insulation;

[0088] The technical performance indica...

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Abstract

The invention discloses a biobased micro-porous polyurethane material and a preparation method thereof. The method comprises a component A preparation process, a component B preparation process and a component A and component B mixing process, wherein the component A preparation process comprises the following steps: stirring 20 to 41 parts by weight of polyether polyol, 3 to 11 parts by weight of chain extender, 0.01 to 0.52 part by weight of water, 0.15 to 0.59 part by weight of silicone oil, and 0.12 to 0.33 part by weight of catalyst for not less than 5 minutes; and degassing under a negative pressure condition until the degree of vacuum does not change any more, and sealing for storage. Compared with the prior art, according to the invention, a pre-polymer method is adopted, MDI (diphenylmethane diisocyanate) with low price, good prepolymer stability and short production period and biobased polyether polyol with environmental friendliness and regenerability are preferably used for preparing a micro-porous elastic body, thus environmental friendliness and use performance are taken into consideration, and the market developing space is great.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials and preparation methods thereof, and in particular relates to a bio-based microporous polyurethane material and a preparation method thereof. Background technique [0002] Due to the poor heat resistance and weather resistance of ordinary polyurethane microcellular elastomers, and poor antistatic properties, it needs to be modified to meet the requirements. Chinese patent CN101486834A uses organic montmorillonite to strengthen polyurethane microcellular elastomer, and the effect is more obvious, but it has adopted 1,1-dichloro-1-fluoroethane (F-141b) as physical foaming agent, this hair The foaming agent has a destructive effect on the ozone layer, so it should not be used. Chinese patent CN1185501A uses 10% to 60% of ordinary mineral clay to reinforce polyurethane elastomer sleeper backing plates for railways. The weight of the elastomer increases a lot, and it adopts a one-s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/10C08K9/04C08K7/10C08J9/08B29C39/44C08G101/00
Inventor 昝向明
Owner 安徽绿能技术研究院有限公司
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