Degradable polyurethane rigid foam material and manufacture method thereof

A polyurethane rigid foam and raw material technology, applied in the field of preparation of the polyurethane rigid foam material, can solve the problems of non-degradable white pollution, refractory degradation, etc., and achieve the effect of good soil burial degradation performance

Inactive Publication Date: 2008-08-20
JIANGMEN KELI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, behind the wide application of polyurethane rigid foam materials, there will be a large amount of non-degradable "white pollution"
Because the traditional polyurethane rigid foam material made from petrochemical polyols is difficult to degrade, so to reduce this "white pollution", the only way to reduce this "white pollution" is to recycle the waste of polyurethane rigid foam and then eliminate it by incineration. This method of reducing "white pollution" will create new environmental problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment one: the preparation of plant polyol

[0021] Add 60g of 1,2-ethylene glycol, 40g of polyethylene glycol 600, and 3g of sulfuric acid to the reaction, stir evenly, raise the temperature to 135°C, add 10g of dried and chopped wheat straw, react for 100 minutes, cool down to 90°C and add 2g Sodium carbonate, decompress to 0.8 atmospheric pressure, keep warm for 30 minutes, cool and discharge. The obtained plant polyol has a hydroxyl value of 400 mgKOH / g and a viscosity of 450 mPa.s.

Embodiment 2

[0022] Embodiment 2: Preparation of degradable polyurethane rigid foam material

[0023] Take 90g of plant polyol obtained in Example 1, add 10g of polyether 4110, 2g of dibutyltin dilaurate, 4g of water, 2g of silicone oil foam stabilizer L-6915, and mix well to obtain component A. Take another 110g of industrial grade diphenylmethane diisocyanate as component B. Components A and B are sprayed out after being mixed with a polyurethane spray gun, and reacted and solidified to obtain a degradable polyurethane rigid foam material. The basic properties of the material are as follows: Density: 21Kg / m 3 ; Compression strength: 13Kpa. Can be used for disposable filling packaging materials.

[0024] The soil burial degradability of the material is as follows: the weight loss rate is 12% in 3 months and 20% in 6 months. And if it is placed in a ventilated and dry indoor environment, the weight loss rate within 6 months is less than 0.1%.

Embodiment 3

[0025] Embodiment three: the preparation of plant polyol

[0026] Add 20g of 1,2-propanediol, 80g of polyethylene glycol 200, and 12g of oxalic acid to the reaction, stir evenly, heat up to 145 degrees, add 30g of dried and chopped bagasse, react for 150 minutes, cool down to 100 degrees, and put in 6g of three Ethanolamine, decompress to 0.5 atmospheric pressure, keep warm for 45 minutes, cool and discharge. The obtained plant polyol has a hydroxyl value of 450 mgKOH / g and a viscosity of 600 mPa.s.

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Abstract

The invention discloses a degradable rigid polyurethane foam material which is prepared by A and B components in the ratio of 1:1-1:1.1; wherein, the component A consists of materials with the following parts by weight: 50-100 portions of biomass polyols, 0-50 portions of general polyols, 0.3-5 portions of catalyst, 0.5-5 portions of water, 1-4 portions of silicone surfactant oil, 0-30 portions of physical foaming agent; the component B is pure industrial diphenyl-methane-diisocyanate. The invention also discloses a preparation method for the rigid polyurethane foam material. The method is that the component A is prepared by biomass polyols, general polyols, catalyst, water, silicone surfactant oil, and physical foaming agent in the ratio, the component A and component B are mixed and sprayed out for solidification by a polyurethane spray gun according to the proportion of 1:1-1.1. The degradable rigid polyurethane foam material is characterized by good soil burial degradability, thus solving the problem of 'white pollution' caused by using the traditional rigid polyurethane foam material.

Description

technical field [0001] The invention relates to a polymer material, in particular to a polyurethane rigid foam material with good soil burial degradation performance, and also relates to a preparation method of the polyurethane rigid foam material. Background technique [0002] Polyurethane rigid foam materials are widely used in various fields due to their excellent mechanical properties, thermal insulation properties and low price. For example, in the process of filling and encapsulating precision instruments and precious cultural relics, polyurethane hard foam materials need to be quickly formed to fill the space of objects and boxes in order to achieve all-round shock absorption and damage prevention; another example is prefabricated simple insulation walls In terms of panels, the excellent thermal insulation performance of rigid polyurethane foam materials and the characteristics of on-site molding processes can be used, so that no additional adhesives are needed to bon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/40C08L75/04C08G101/00C08L97/02
Inventor 洪育贤郑顺涛
Owner JIANGMEN KELI NEW MATERIAL CO LTD
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