Medium-density rigid polyurethane foam material and preparation method thereof

A polyurethane rigid foam, medium density technology, applied in the field of structural materials and their preparation, composite materials, can solve the problems of poor impact resistance, poor resilience, short storage period, etc., and achieve good compression resistance and waterproof performance. Good, long shelf life effect

Inactive Publication Date: 2016-10-05
瀚寅(上海)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the raw materials of traditional polyurethane packaging materials have short storage period, high density, high cost, high brittleness, poor impact resistance, poor resilience, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: a kind of medium density polyurethane rigid foam material and preparation method thereof, its preparation process is:

[0031] Polyether polyol A (hydroxyl value 30mgKOH / g) 25kg

[0032] Polyether polyol B (hydroxyl value 295mgKOH / g) 25kg

[0033] Polyether polyol C (hydroxyl value 440mgKOH / g) 30kg

[0034] water 14kg

[0035] N,N-Dimethylcyclohexylamine 0.15kg

[0036] Pentamethyldiethylenetriamine 1kg

[0037] N-formylmorpholine 0.6kg

[0038] Glycerol 3kg

[0039] Silicone oil (viscosity (25°C) is 750mPa·s) 5kg

[0040] Polyisocyanate (NCO mass fraction is 31%) 100kg

[0041] (1) Weigh each raw material according to the formula quantity;

[0042] (2) Put polyether polyol A, polyether polyol B, polyether polyol C, glycerin and silicone oil in a mechanically stirred tank for 15 minutes, in 1×10 4 Remove air bubbles under Pa vacuum for 15 minutes to prepare the main mixture;

[0043] (3) Mix water, N,N-dimethylcyclohexylamine, pentamethyldiethyle...

Embodiment 2

[0046] Embodiment 2: a kind of medium density polyurethane rigid foam material and preparation method thereof, its preparation process is:

[0047] Polyether polyol A (hydroxyl value 20mgKOH / g) 20kg

[0048] Polyether polyol B (hydroxyl value 280mgKOH / g) 20kg

[0049] Polyether polyol C (hydroxyl value 420mgKOH / g) 20kg

[0050] water 10kg

[0051] N,N-Dimethylcyclohexylamine 0.1kg

[0052] Pentamethyldiethylenetriamine 0.8kg

[0053] N-formylmorpholine 0.4kg

[0054] Glycerol 2kg

[0055] Silicone oil (viscosity (25°C) is 650mPa·s) 4kg

[0056] Polyisocyanate (NCO mass fraction is 29%) 100kg

[0057] (1) Weigh each raw material according to the formula quantity;

[0058] (2) Put polyether polyol A, polyether polyol B, polyether polyol C, glycerin and silicone oil in a mechanical stirring tank and stir for 10 minutes, 5 Remove air bubbles under Pa vacuum for 10 minutes to prepare the main mixture;

[0059] (3) Mix water, N,N-dimethylcyclohexylamine, pentamethyldiethyl...

Embodiment 3

[0062]Embodiment 3: a kind of medium density polyurethane rigid foam material and preparation method thereof, its preparation process is:

[0063] Polyether polyol A (hydroxyl value 40mgKOH / g) 30kg

[0064] Polyether polyol B (hydroxyl value 310mgKOH / g) 30kg

[0065] Polyether polyol C (hydroxyl value 460mgKOH / g) 40kg

[0066] water 18kg

[0067] N,N-Dimethylcyclohexylamine 0.2kg

[0068] Pentamethyldiethylenetriamine 1.2kg

[0069] N-formylmorpholine 0.8kg

[0070] Glycerol 4kg

[0071] Silicone oil (viscosity (25°C) is 850mPa·s) 6kg

[0072] Polyisocyanate (NCO mass fraction is 33%) 100kg

[0073] (1) Weigh each raw material according to the formula quantity;

[0074] (2) Put polyether polyol A, polyether polyol B, polyether polyol C, glycerol and silicone oil in a mechanically stirred tank for 20 minutes, and stir in a 1×10 3 Remove air bubbles under Pa vacuum for 20 minutes to prepare the main mixture;

[0075] (3) Mix water, N,N-dimethylcyclohexylamine, pentamet...

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Abstract

The invention provides a medium-density rigid polyurethane foam material and a preparation method thereof and relates to a composition material, a structural material and preparation methods thereof. The material is prepared from: polyether polyol A, polyether polyol B, polyether polyol C, water, N,N-dimethylcyclohexane, pentametyl diethylene triamine, N-formyl morpholine, glycerol, silicone oil and polyisocyanate. The rigid polyurethane foam material has long raw material storage period, has good texture and light weight, is convenient to produce and prepare, is low in production cost and good in support strength, has better compression resistance and good buffer and anti-shock performance, is free of shrinkage, is water-proof and anti-moth, and is suitable for packaging precise instruments and devices, electronic components and communication tools and the like.

Description

technical field [0001] The invention relates to a medium-density rigid polyurethane foam material and a preparation method thereof, which relate to a composite material, a structural material and a preparation method thereof, and are suitable for packaging precision instruments, equipment, electronic components, communication tools and the like. Background technique [0002] During the transportation of instruments and equipment, in order to prevent them from being damaged, it is often necessary to use packaging materials with cushioning effects. The more commonly used packaging materials are metal, paper, expanded polystyrene plastic, etc., but these traditional packaging materials have some shortcomings. For example, although metal packaging materials have high strength, they can protect instruments and equipment from external forces. However, if the instrument or equipment itself collides with it, due to its lack of buffer toughness, it will also cause damage to the instr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/32C08G18/18C08J9/08
Inventor 魏继福高宗旺冯铭祥程建华王锋
Owner 瀚寅(上海)新材料科技有限公司
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