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Preparation method of polyurethane foam

A technology of polyurethane foam and foam stabilizer is applied in the field of preparation of polyurethane foam, which can solve the problems of poor oil retention, low oil absorption rate, and difficulty in recycling and reuse, and achieves the effects of improving oil absorption performance and repeated use performance, and reducing oil absorption performance.

Inactive Publication Date: 2016-10-12
ANHUI HUAYU PIPELINE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional oil-absorbing materials (such as corn stalks, non-woven wool, kapok fiber, vermiculite, expanded graphite, zeolite, etc.) mainly rely on physical adsorption to absorb oil on the surface of the material, showing a small oil absorption ratio, low oil-water selectivity, The disadvantages of poor oil retention after oil absorption and difficult recycling and reuse cannot meet the requirements of waste oil recovery and environmental management

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method of polyurethane foam, comprising the following steps:

[0018] S1. Select 100 parts of nano-calcium carbonate, 1 part of silane coupling agent, 40 parts of polyether polyol, 10 parts of foam stabilizer, 40 parts of water, 2 parts of triethylenediamine, and dibutyltin dilaurate according to parts by mass. 2 parts, 200 parts of toluene diisocyanate; nano calcium carbonate particle size is 15-40nm; silane coupling agent is silane coupling agent KH-570; polyether polyol is polyether polyol PPO330;

[0019] S2. After drying the nano-calcium carbonate in an oven at 100°C for 3 hours, add it to a high-speed mixer, add a silane coupling agent and stir for 15 minutes, and dry it at 80°C for 2 hours in the oven to obtain a modified Nano calcium carbonate;

[0020] S3. Add polyether polyol, foam stabilizer, water, triethylenediamine and dibutyltin dilaurate to the reactor in sequence, and control the reaction temperature of the reactor at 25° C., react for 5 ...

Embodiment 2

[0024] A preparation method of polyurethane foam, comprising the following steps:

[0025] S1. Select 120 parts of nano calcium carbonate, 2 parts of silane coupling agent, 50 parts of polyether polyol, 20 parts of foam stabilizer, 60 parts of water, 5 parts of triethylenediamine, dibutyltin dilaurate according to the mass parts 5 parts, 240 parts of toluene diisocyanate; nano calcium carbonate particle size is 15-40nm; silane coupling agent is silane coupling agent KH-570; polyether polyol is polyether polyol PPO330;

[0026] S2. After drying the nano-calcium carbonate in an oven at 100°C for 4 hours, add it to a high-speed mixer, add a silane coupling agent and stir for 20 minutes, and then dry it at 80°C for 2 hours in the oven to obtain a modified Nano calcium carbonate;

[0027] S3. Add polyether polyol, foam stabilizer, water, triethylenediamine and dibutyltin dilaurate to the reactor in sequence, and control the reaction temperature of the reactor at 35° C., react for ...

Embodiment 3

[0031] A preparation method of polyurethane foam, comprising the following steps:

[0032] S1. Select 110 parts of nano-calcium carbonate, 1.5 parts of silane coupling agent, 45 parts of polyether polyol, 15 parts of foam stabilizer, 50 parts of water, 3 parts of triethylenediamine, dibutyltin dilaurate according to parts by mass 4 parts, 220 parts of toluene diisocyanate; nano calcium carbonate particle size is 15-40nm; silane coupling agent is silane coupling agent KH-570; polyether polyol is polyether polyol PPO330;

[0033] S2. After drying the nano-calcium carbonate in an oven at 100°C for 3.5 hours, add it to a high-speed mixer, add a silane coupling agent and stir for 18 minutes, and dry it at 80°C for 2 hours in the oven to obtain a modified Nano calcium carbonate;

[0034] S3. Add polyether polyol, foam stabilizer, water, triethylenediamine and dibutyltin dilaurate to the reactor in sequence, and control the reaction temperature of the reactor at 30° C., react for 8 ...

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Abstract

The invention discloses a preparation method of polyurethane foam. The method comprises the following steps: by using nano calcium carbonate, a silane coupling agent, polyether glycol, a foam stabilizer, water, triethylenediamine, tin dibutyl dilaurate and toluene diisocyanate as raw materials, introducing the silane coupling agent to carry out activation modification treatment on the nano activated calcium carbonate, and carrying out foaming reaction on the toluene diisocyanate and modified nano calcium carbonate in a reaction kettle to prepare the polyurethane flexible foam. The polyurethane foam prepared by the method can enhance the oil absorbency and reusability of oil products. The modified nano calcium carbonate can perform a reinforcing function on the polyurethane flexible foam, so that the oil absorbency is not obviously lowered after 1000 times of repeated use.

Description

technical field [0001] The invention relates to the technical field of polyurethane foam production and processing, in particular to a preparation method of polyurethane foam. Background technique [0002] Traditional oil-absorbing materials (such as corn stalks, non-woven wool, kapok fiber, vermiculite, expanded graphite, zeolite, etc.) mainly rely on physical adsorption to absorb oil on the surface of the material, showing a small oil absorption ratio, low oil-water selectivity, The disadvantages of poor oil retention after oil absorption and difficult recycling and reuse cannot meet the requirements of waste oil recovery and environmental governance. Polyurethane foam material has the characteristics of light weight, can float on the water surface, can be foamed on site, has a fast oil absorption rate and is easy to recycle, and has high application value in the rapid treatment of oil pollution on the water surface. Contents of the invention [0003] The invention prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08K9/06C08K3/26C08G101/00
CPCC08G18/48C08K3/26C08K9/06C08K2003/265C08K2201/003C08K2201/011C08G2110/0083
Inventor 吴跃强
Owner ANHUI HUAYU PIPELINE MFG
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