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Automobile air conditioner blower shell based on diatomaceous earth modification, and preparation method thereof

A technology of automobile air conditioner and diatomite, which is applied in the field of automobile air conditioner components, can solve the problems affecting the performance of fan blades, deformation, and mechanical performance reduction, and achieve excellent weather resistance and mechanical properties, easy to obtain raw materials, and simple steps Effect

Inactive Publication Date: 2017-02-22
芜湖德鑫汽车空调有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there is a large temperature difference between the temperature of the blower shell of the automobile air conditioner during the working process and the temperature after it stops working, under such a large temperature difference, the blower shell of the automobile air conditioner will often be deformed, which will affect the fan. The working performance of the leaf, and its mechanical properties will be greatly reduced

Method used

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preparation example Construction

[0013] The invention provides a method for preparing a diatomite-based modified automobile air-conditioning blower shell, comprising:

[0014] 1) ball milling starch, silica gel, cyclodextrin, dodecyl ethoxy sulfobetaine, graphene and ornithine to obtain modified starch;

[0015] 2) calcining diatomite, graphite, molybdenite and sodium tungstate in the presence of protective gas to obtain a modified composition;

[0016] 3) PC (polycarbonate), PP (polypropylene), PA (polyamide), rosin, hydroxyethyl cellulose, glass fiber, titanate, simethicone, diisodecyl phthalate , zinc oxide, modified starch and the modified composition are mixed and shaped to prepare a diatomite-based modified automobile air-conditioning blower housing.

[0017] In step 1) of the present invention, the specific conditions of ball milling can be selected in a wide range, but in order to make the automobile air-conditioning blower shell modified based on diatomite have more excellent weather resistance and ...

Embodiment 1

[0029] 1) Starch, silica gel, cyclodextrin, dodecyl ethoxy sulfobetaine, graphene and ornithine were ball milled at 120°C for 14 hours at a weight ratio of 100:28:39:20:8:25 to produce modified starch.

[0030] 2) Mix diatomite, graphite, molybdenite and sodium tungstate in a weight ratio of 100:51:10:38; and in the presence of nitrogen, heat up from 25°C to 380°C at a rate of 2°C / min °C and keep it for 1.5h, then raise the temperature to 580°C at a rate of 0.8°C / min and keep it for 4h to prepare the modified composition.

[0031] 3) PC (weight average molecular weight is 4000), PP (weight average molecular weight is 7000), PA (weight average molecular weight is 6000), rosin, hydroxyethyl cellulose, glass fiber, titanate, simethicone, Diisodecyl phthalate, zinc oxide, modified starch and the modified composition are mixed according to the weight ratio of 100:68:29:21:6:25:12:38:31:27:39:20, and Kneading at 190°C for 3 hours and molding to obtain diatomaceous earth-based blow...

Embodiment 2

[0033] 1) Starch, silica gel, cyclodextrin, dodecyl ethoxy sulfobetaine, graphene and ornithine were ball milled at 110°C for 12 hours according to the weight ratio of 100:22:34:14:6:22 to produce modified starch.

[0034] 2) Mix diatomaceous earth, graphite, molybdenite and sodium tungstate in a weight ratio of 100:45:7:32; and in the presence of helium, heat up from 15°C at a rate of 1°C / min to 350°C and keep it for 1h, then raise the temperature to 550°C at a rate of 0.5°C / min and keep it for 3h to prepare the modified composition.

[0035] 3) PC (weight average molecular weight is 2000), PP (weight average molecular weight is 6000), PA (weight average molecular weight is 4000), rosin, hydroxyethyl cellulose, glass fiber, titanate, simethicone, Diisodecyl phthalate, zinc oxide, modified starch and the modified composition are mixed according to the weight ratio of 100:66:22:15:5:20:9:33:28:20:30:17, and Kneading at 185°C for 2 hours and molding to obtain diatomaceous eart...

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Abstract

The invention discloses an automobile air conditioner blower shell based on diatomaceous earth modification, and a preparation method thereof. The preparation method comprises the following steps: (1) carrying out ball milling on starch, silica gel, cyclodextrin, dodecyl ethoxy sulphobetaine, graphene and ornithine to obtain modified starch; (2) calcining diatomaceous earth, graphite, molybdenite and sodium wolframate in existence of a shielding gas to obtain a modified composition; and (3) carrying out mixing and molding on PC, PP, PA, rosin, hydroxy ethyl cellulose, glass fibers, titanate, dimethyl silicon oil, diisodecyl phthalate, zinc oxide, the modified starch and the modified composition to obtain the automobile air conditioner blower shell based on diatomaceous earth modification. The automobile air conditioner blower shell based on diatomaceous earth modification prepared by the method has excellent weather resistance and mechanical properties, and simultaneously the preparation method has simple steps and easily available raw materials.

Description

technical field [0001] The invention relates to automobile air-conditioning components, in particular to a diatomite-based modified automobile air-conditioning blast shell and a preparation method thereof. Background technique [0002] The car air conditioner blower shell is an important part of the car air conditioner blower. The car air conditioner blower mainly plays the role of blowing hot or cold air to play the role of gas circulation, and the car air conditioner blower shell plays the role of protecting the car air conditioner. The internal parts of the blower also play the role of forming the air duct. [0003] At present, the blower shell of the automobile air conditioner is generally made of polymer materials. Because there is a large temperature difference between the temperature of the blower shell of the automobile air conditioner during the working process and the temperature after it stops working, under such a large temperature difference, the blower shell o...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L23/12C08L77/00C08L93/04C08L1/28C08L83/04C08L3/04C08K13/06C08K9/00C08K7/14C08K5/12C08K3/22C08K3/36C08K3/04C08K3/24
CPCC08L69/00C08L2201/08C08L2205/035C08L23/12C08L77/00C08L93/04C08L1/286C08L83/04C08L3/04C08K13/06C08K9/00C08K7/14C08K5/12C08K2003/2296C08K3/36C08K3/04C08K3/24
Inventor 李茂勇陈天祥
Owner 芜湖德鑫汽车空调有限公司
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