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Hard polyurethane foam material and preparation method thereof

A technology of rigid polyurethane and foam materials, which is applied in the field of building materials, can solve the problems of different reinforcement effects of materials, and achieve the effects of good heat insulation effect, good wear resistance and corrosion resistance, and good dimensional stability

Inactive Publication Date: 2014-05-28
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, different fillers have different reinforcing effects on materials, and many technical performance indicators such as compressive strength, elastic modulus, dimensional stability, hardness, tensile strength and impact strength are often difficult to take into account. Performance indicators, especially rigid polyurethane foam materials that take into account the three core indicators of strength, density, and dimensional stability

Method used

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  • Hard polyurethane foam material and preparation method thereof
  • Hard polyurethane foam material and preparation method thereof
  • Hard polyurethane foam material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Component A: Weigh 100 parts of polyphenyl polymethylene polyisocyanate PAPI, brand M20S, the mass fraction of NCO is 31.4%, the viscosity (25°C) is 200mPa·s, and the average functionality is 2.7 (BASF (China) Co., Ltd. Company Shanghai Branch).

[0029] Preparation of component B: at a temperature of 25°C, weigh 3.0 parts of foam stabilizer AK-8806, 4.0 parts of diethylenetriamine, 0.8 parts of T-120, 18.0 parts of Solkane365mfc, 5.0 parts of ethylenedi Alcohol, 4.0 parts of triethanolamine, 7.0 parts of glass fiber and 8.0 parts of SiO 2 Add it into the agitator, pre-weigh 75 parts of polyether polyol SU-415M and 25 parts of polyester polyol PS-3802, and stir for 360s with the agitator at a speed of 120r / min.

[0030] Among them, polyether polyol SU-415M has a hydroxyl value of 400-430mgKOH / g, and a viscosity (25°C) of 2000-5000mPa·s (Shandong Bluestar Dongda Chemical Co., Ltd.); polyester polyol PS-3802, a hydroxyl value 380~400mgKOH / g, viscosity (25℃) is 3000±500m...

Embodiment 2

[0036] Component A: Weigh 100 parts of polyphenyl polymethylene polyisocyanate PAPI, grade 44V20, the mass fraction of NCO is 30.2-32.0%, the viscosity (25°C) is 150-250mPa·s, and the average functionality is 2.7 (Bayer Chemical).

[0037] Preparation of component B: at a temperature of 25°C, weigh 4.0 parts of foam stabilizer Silbyk TP-3798, 5.0 parts of triethylenediamine, 0.5 parts of T-9, 18.0 parts of HCFC-123, 6.0 parts glycerol, 5.0 parts of trimethylolpropane, 7.0 parts of carbon fiber and 8.0 parts of TiO 2 Add it to the agitator, weigh 75 parts of polyether polyol SU-450L and 25 parts of polyester polyol SKR-410 in advance, and stir it for 360s with the speed of 120r / min.

[0038] Among them, polyether polyol SU-450L, molecular weight 586, hydroxyl value 440-460mgKOH / g, viscosity (25°C) 6000-10000mPa·s (Shandong Bluestar Dongda Chemical Co., Ltd.); polyester polyol SKR-410 , the hydroxyl value is 400-420mgKOH / g, the viscosity (25°C) is 3000±500mPa·s (Qingdao Ruinuo C...

Embodiment 3

[0044] Component A: Weigh 110 parts of polyphenyl polymethylene polyisocyanate PAPI, brand PM-200, the mass fraction of NCO is 30.8%, the viscosity (25°C) is 166mPa·s, and the average functionality is 2.6 (Yantai Wanhua ).

[0045] Preparation of component B: at a temperature of 25°C, weigh 4.5 parts of foam stabilizer AK-6618, 6.5 parts of N,N-dimethylbenzylamine, 1 part of T-12, and 20 parts of cyclopentyl Alkane, 6.0 parts of 3,5-dimethylthiotoluenediamine, 8.0 parts of bis-2-(hydroxypropyl) aniline, 8.0 parts of glass fiber and 10.0 parts of SiC were added to the stirrer, and 70 parts were weighed in advance. 1 part of polyether polyol DD-4110 and 30 parts of polyester polyol SKR-400C, stirred by a stirrer for 360s at a speed of 120r / min.

[0046] Among them, polyether polyol DD-4110 has a hydroxyl value of 430-470mgKOH / g, and a viscosity (25°C) of 3000-6000mPa·s (Shandong Bluestar Dongda Chemical Co., Ltd.); polyester polyol SKR-400C, a hydroxyl value 390~410mgKOH / g, vi...

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Abstract

The invention discloses a hard polyurethane foam material. The hard polyurethane foam material comprises an A component and a B component, wherein the A component is polymethylene polyphenyl polyisocyanate, and the B component comprises a polyol, a foam stabilizer, a catalyst, a foaming agent, a chain extender, a cross-linking agent and a composite reinforcing material. The hard polyurethane foam material has characteristics of high strength, light weight, low heat conduction, good thermal insulation effects, good sound insulation, foam pores mainly being a closed-pore type, capability of bearing large load, good wear resistance, good corrosion resistance, good dimension stability, and the like, and is suitable for the fields of insulating materials, thermal insulation materials, thermal insulation materials of building walls, sandwich laminated plates, structural materials, sound insulation materials, aviation materials, spaceflight materials, road repairing, and the like. The hard polyurethane foam material can also be used as wood-imitation materials with high strength and high density, and is suitable for manufacturing various furniture, etc..

Description

technical field [0001] The invention relates to a rigid polyurethane foam material and a preparation method thereof, belonging to the field of building materials. Background technique [0002] Ordinary rigid polyurethane foam materials generally use polyether polyols with high functionality and high hydroxyl value to react with polyisocyanates to form polymers with cross-linked structures, which have high hardness, high compressive strength, and dimensional stability. Excellent, light weight, low thermal conductivity, more than 95% closed porosity, good corrosion resistance and wear resistance, etc., widely used in various heat insulation materials, sound insulation materials, support materials and aerospace materials. However, the strength of ordinary rigid polyurethane foam is not ideal, and it cannot be applied to fields such as road repair, main structure gap filling support and imitation wood furniture. [0003] In order to solve the above problems, Chinese patent 2006...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/79C08G18/48C08G18/42C08G18/32C08K13/04C08K7/14C08K3/36C08K7/06C08K3/04C08K3/22C08K3/34C08J9/14C08L75/08C08G101/00
CPCC08G18/4018C08G18/7664C08K7/06C08K7/14C08G2110/0025
Inventor 韩海军王新锋李红英
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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