Preparation method for polyurethane air filter element of car

An air filter element and polyurethane technology, which is applied in the chemical industry, can solve the problems of complex preparation process, difficulty in taking into account mechanical strength and flexibility, etc., and achieve the effects of simple process, good comprehensive mechanical properties, good application prospects and promotion value.

Active Publication Date: 2015-12-02
随州市银河化工厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the defects and deficiencies in the polyurethane automotive air filter element in the prior art, such as difficulty in balancing mechanical strength and flexibility, and complicated preparation procedures, the present invention provides a novel method for preparing a polyurethane automotive air filter element, which is simple and easy to implement. The polyurethane automotive air filter element prepared by the preparation method has the advantages of high mechanical strength and good flexibility.

Method used

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  • Preparation method for polyurethane air filter element of car
  • Preparation method for polyurethane air filter element of car
  • Preparation method for polyurethane air filter element of car

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1. Take 90kg of polyether polyol with a molecular weight of about 6000, 20kg of polyester polyol, 2kg of diethylene glycol, 3kg of triethanolamine, 8kg of black polyether pulp, and 2kg of triethylenediamine, and put the above raw materials into the reaction kettle. React at ℃ for 2 hours to prepare liquid A;

[0042] 2. Put 70kg of modified polymethyl polyphenyl isocyanate and 30kg of polyether polyol into the reaction kettle, and react at 60°C for 7 hours to prepare liquid B;

[0043] 3. Inject liquid A and liquid B into tanks A and B of the glue injection machine respectively. The temperature of tank B is 30°C. After selecting the air filter mold, start the machine to inject glue. The mass ratio of liquid A to liquid B is 100:30;

[0044] 4. Immediately insert the filter paper core after injecting the glue, and release the mold after 8 minutes to obtain a polyurethane automobile air filter element.

Embodiment 2

[0046] 1. Take 60kg of polyether polyol with a molecular weight of about 10000, 40kg of polyester polyol, 1kg of diethylene glycol, 2kg of triethanolamine, 2kg of black polyether pulp, and 4kg of triethylenediamine, and put the above raw materials into the reaction kettle. React at ℃ for 3 hours to prepare liquid A;

[0047] 2. Put 80kg of modified polymethyl polyphenyl isocyanate and 30kg of polyether polyol into the reaction kettle, and react at 100°C for 8 hours to prepare liquid B;

[0048] 3. Inject liquid A and liquid B into tanks A and B of the glue injection machine respectively. The temperature of tank B is 20°C. After selecting the air filter mold, start the machine to inject glue. The mass ratio of liquid A to liquid B is 100:20;

[0049] 4. Immediately insert the filter paper core after injecting the glue, and release the mold after 8 minutes to obtain a polyurethane automobile air filter element.

Embodiment 3

[0051]1. Take 70kg of polyether polyol with a molecular weight of about 8000, 30kg of polyester polyol, 2kg of diethylene glycol, 3kg of triethanolamine, 5kg of black polyether pulp, and 8kg of triethylenediamine, and put the above raw materials into the reaction kettle. React at ℃ for 3 hours to prepare liquid A;

[0052] 2. Put 60 kg of modified polymethyl polyphenyl isocyanate and 40 kg of polyether polyol into the reaction kettle, and react at 80°C for 5 hours to prepare liquid B;

[0053] 3. Inject liquid A and liquid B into tanks A and B of the glue injection machine respectively. The temperature of tank B is 10°C. After selecting the air filter mold, start the machine to inject glue. The mass ratio of liquid A to liquid B is 100:25;

[0054] 4. Immediately insert the filter paper core after injecting the glue, and release the mold after 7 minutes to obtain a polyurethane automobile air filter element.

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Abstract

The invention discloses a preparation method for a polyurethane air filter element of a car. The preparation method comprises the following steps: carrying out a 2-4 hours' reaction at 40-80 DEG C by utilizing 60-90 parts by mass of polyether polyol, 10-40 parts by mass of polyester polyol, 1-4 parts by mass of diethylene glycol, 2-6 parts by mass of triethanolamine, 2-8 parts by mass of black polyether slurry and 1-10 parts by mass of triethylene diamine, so as to obtain a solution A; carrying out a 4-8 hours' reaction at 60-100 DEG C to prepare a solution B; starting a glue-injection machine to carry out glue injection, wherein the mass ratio of the solution A to the solution B is 100:(15-30); after glue injection, inserting a filter paper element, and 6-8 minutes later carrying out demoulding to obtain the polyurethane air filter element. The preparation method is simple, convenient and feasible; the prepared solution B is prevented from crystallizing at -40 DEG C, so that a cumbersome working procedure of heating and dissolution in the preparation process is avoided, and the prepared polyurethane air filter element is high in flexibility and mechanical strength.

Description

technical field [0001] The invention relates to a preparation method of a polyurethane automobile air filter element, which belongs to the technical field of chemical industry. Background technique [0002] The air filter element is the core component of the air filter. Since the 1980s, the air filter element capped with polyurethane has been used in China, which has the advantages of high production efficiency, light weight and good sealing performance. [0003] Journal name: "Progress in Fine Petrochemical Industry", Volume 1, No. 9, 2000, the paper "Development of Polyurethane Composite Materials for Automobile Air Filter Elements", discloses a polyurethane composite material for automotive air filter elements, its main component A liquid contains Mass parts: 70-100 parts of polyether polyol GEP-330N, 0-30 parts of polymer polyol GPOP-36 / 28G, 2-6 parts of chain extender, 2-6 parts of cross-linking agent, 0.6-1.3 parts of composite Catalyst, 0.15-0.3 parts of foaming agen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/10C08G18/76C08G18/66C08G18/48C08G18/42
CPCC08G18/10C08G18/42C08G18/4804C08G18/7664C08G18/6674C08G18/664
Inventor 杨宏喻致菊
Owner 随州市银河化工厂
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