Polyurethane high resilience foam prepared from recovered recycled polyol as raw material

A polyol and polyurethane technology, applied in the field of polyurethane foam, can solve the problems not mentioned, and achieve the effects of reducing the dosage, good air permeability, and reducing the dosage of expensive catalysts

Inactive Publication Date: 2017-02-08
浙江华江科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent also does not mention the use of re

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

[0025] Polyether polyol 330N: 70 parts, polymer polyol KGP524: 10 parts, recycled polyol: 20 parts, catalyst ZF10: 0.3 parts, catalyst A33: 0.7 parts, silicone surfactant: 1.5 parts, water: 6 Parts, crosslinking agent triethanolamine: 0.5 parts, no flame retardant added; modified MDI: 72.5 parts.

[0026] The foaming method is as follows: pre-mix and stir the above-mentioned materials except for modified MDI, keep the material temperature at 23±2℃, and maintain the temperature of modified MDI at 23±2℃. After the black and white material is ready, pour the modified MDI into the bucket, then pour the well-stirred white material and stir at 1500rpm for 10s, and pour the mixture into the foaming box for free foaming.

[0027] After testing: the foam density is 30kg / m 3 , The rebound rate is 57%, the tensile strength is 91kPa, the elongation at break is 99%, and the tear strength is 2.3N / cm.

Example Embodiment

[0028] Example 2

[0029] Polyether polyol 330N: 50 parts, polymer polyol KGP524: 20 parts, recycled polyol: 30 parts, catalyst ZF10: 0.1 part, catalyst A33: 0.3 part, silicone surfactant: 0.5 part, water: 2 Parts, crosslinking agent triethanolamine: 1.5 parts, phosphorus-nitrogen halogen-free flame retardant: 8 parts; modified MDI: 52.5 parts.

[0030] The foaming method is as follows: pre-mix and stir the above-mentioned materials except for modified MDI, keep the material temperature at 23±2℃, and maintain the temperature of modified MDI at 23±2℃. After the black and white material is ready, pour the modified MDI into the bucket, then pour the well-stirred white material and stir at 1500rpm for 10s, and pour the mixture into the foaming box for free foaming.

[0031] After testing: the foam density is 68kg / m 3 , The rebound rate is 61%, the tensile strength is 168kPa, the elongation at break is 110%, the tearing strength is 3.5N / cm, and the horizontal burning speed is less than 1...

Example Embodiment

[0032] Example 3

[0033] Polyether polyol 330N: 50 parts, polymer polyol KGP524: 30 parts, recycled polyol: 20 parts, catalyst ZF10: 0.3 parts, catalyst A33: 0.6 parts, silicone surfactant: 0.8 parts, water: 3.5 Parts, crosslinking agent triethanolamine: 0.8 parts, phosphorus-nitrogen halogen-free flame retardant: 3 parts; modified MDI: 42.5 parts.

[0034] The foaming method is as follows: pre-mix and stir the above-mentioned materials except for modified MDI, keep the material temperature at 23±2℃, and maintain the temperature of modified MDI at 23±2℃. Use a high-pressure foaming machine to drive the white material and the black material into the mold according to the ratio (2.5:1) for molding and foaming (the mold surface is sprayed with a release agent in advance), and the mold is released after 90 seconds.

[0035] After testing: the foam density is 72kg / m 3 , The rebound rate is 65%, the tensile strength is 165kPa, the elongation at break is 116%, and the tear strength is 3.7...

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Abstract

The invention discloses a method for preparing polyurethane high resilience foam from recovered recycled polyol as a raw material. The polyurethane high resilience foam comprises a white material and a black material. The white material is a polyether composition and comprises, by mass, 50-70 parts of polyether polyol, 10-30 parts of polymer polyol, 20-30 parts of recovered recycled polyol, 0.4-1 part of a catalyst, 0.5-1.5 parts of a silicone surfactant for foam softening and 2-6 parts of a foaming agent. The black material is polyether-modified MDI. A mass ratio of the white material to the black material is 1.5-2.5: 1. The method creatively utilizes the polyurethane foam alcoholysis recovered liquid as a high resilience foam raw material, realizes cycling use of the raw material in a polyurethane industry and realizes a wide polyurethane foam recovery prospect. The high resilience foam is used for automobile components of a carpet sound insulation pad and a bumper pad block and has good feeling, good permeability, excellent sound absorption performances and a low cost.

Description

technical field [0001] The invention belongs to the field of polyurethane foam plastics, and in particular relates to a method for preparing polyurethane high-resilience foam by using recycled polyol as raw material. Background technique [0002] In 1937, Dr. Otto Bayer and his team in Germany first discovered that polyisocyanate and polyol compound could be polyaddition reaction to produce polyurethane. This invention laid the foundation for the vigorous development of polyurethane industry. There are three types of polyurethane foam products: soft, semi-rigid and rigid foams, and the application fields of different shapes are also very different. Soft foam is mainly used in car seats and carpets, semi-rigid foam is used in car roofs and engine heat insulation pads, and rigid foam is used as insulation materials, such as buildings and refrigerators. [0003] Due to its excellent physical properties and good processability, polyurethane foam is widely used in various indust...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/63C08G18/32C08G18/18C08J9/08C08G101/00
CPCC08G18/18C08G18/3203C08G18/3281C08G18/4072C08G18/4829C08G18/632C08G18/6674C08G18/6688C08G2110/005C08G2110/0058C08G2110/0083Y02P20/584
Inventor 刘国旺楼娣方腾飞周立姚琪马国维
Owner 浙江华江科技股份有限公司
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