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Expanded vermiculite modification based air blower shell of automotive air conditioner and preparation method of air blower shell

A technology of expanded vermiculite and automotive air-conditioning, which is applied in the field of automotive air-conditioning parts, and can solve problems such as affecting the working performance of fan blades, reducing mechanical properties, and deformation

Inactive Publication Date: 2017-01-11
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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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0013] The invention provides a method for preparing an automobile air-conditioning blast shell modified based on expanded vermiculite, including:

[0014] 1) Ball mill starch, silica gel, cyclodextrin, dodecyl ethoxy sulfobetaine, graphene and ornithine to prepare modified starch;

[0015] 2) Calcining expanded vermiculite, graphite, molybdenite and sodium tungstate in the presence of protective gas to prepare a modified composition;

[0016] 3) Combine PC (polycarbonate), PP (polypropylene), PA (polyamide), rosin, hydroxyethyl cellulose, basic magnesium sulfate whiskers, titanate, dimethyl silicone oil, phthalic acid Diisodecyl ester, zinc oxide, modified starch, and modified composition are mixed and molded to prepare an automobile air-conditioning blast shell modified based on expanded vermiculite.

[0017] In step 1) of the present invention, the specific conditions of the ball milling can be selected in a wide range, but in order to make the prepared car air conditioner blast sh...

Embodiment 1

[0029] 1) Ball mill starch, silica gel, cyclodextrin, lauryl ethoxy sulfobetaine, graphene and ornithine at a weight ratio of 100:27:39:17:8:27 at 120℃ for 14h To make modified starch.

[0030] 2) Mix the expanded vermiculite, graphite, molybdenite and sodium tungstate in a weight ratio of 100:16:25:13; and in the presence of nitrogen, the temperature is increased from 25°C to 380 at a rate of 2°C / min The temperature is kept at a temperature of 1.5 hours, and then the temperature is increased to 580°C at a rate of 0.8°C / min and the temperature is kept for 4 hours to prepare the modified composition.

[0031] 3) PC (weight average molecular weight of 4000), PP (weight average molecular weight of 7000), PA (weight average molecular weight of 6000), rosin, hydroxyethyl cellulose, basic magnesium sulfate whiskers, titanate, two The weight of methyl silicone oil, diisodecyl phthalate, zinc oxide, modified starch and modified composition is 100:68:28:19:6:13:12:38:31:24:45:20 It is mix...

Embodiment 2

[0033] 1) Ball mill starch, silica gel, cyclodextrin, lauryl ethoxy sulfobetaine, graphene and ornithine at a weight ratio of 100:22:34:14:6:22 at 110°C for 12h To make modified starch.

[0034] 2) The expanded vermiculite, graphite, molybdenite and sodium tungstate are mixed in a weight ratio of 100:15:22:10; and in the presence of helium, the temperature is increased from 15°C to 1.5°C / min The temperature was maintained at 350°C for 1 hour, and then the temperature was increased to 550°C at a rate of 0.7°C / min and held for 3 hours to prepare the modified composition.

[0035] 3) The PC (weight average molecular weight is 2000), PP (weight average molecular weight is 6000), PA (weight average molecular weight is 4000), rosin, hydroxyethyl cellulose, basic magnesium sulfate whiskers, titanate, two The weight of methyl silicone oil, diisodecyl phthalate, zinc oxide, modified starch and modified composition is 100:66:22:15:5:10:9:33:28:20:41:17 It is mixed and mixed at 185°C for 2 ...

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PUM

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Abstract

The invention discloses an expanded vermiculite modification based air blower shell of an automotive air conditioner and a preparation method of the air blower shell. The preparation method comprises the steps: (1) carrying out ball-milling on starch, silica gel, cyclodextrin, dodecyl ethoxy sulfobetaine, graphene and ornithine, so as to prepare modified starch; (2) carrying out calcination on expanded vermiculite, graphite, molybdenite and sodium tungstate in the presence of shielding gas, so as to prepare a modified composition; (3) carrying out mixing on PC, PP, PA, rosin, hydroxyethyl cellulose, basic magnesium sulfate whiskers, titanate, simethicone, diisodecyl phthalate, zinc oxide, the modified starch and the modified composition, and carrying out molding, thereby preparing the expanded vermiculite modification based air blower shell of the automotive air conditioner. The expanded vermiculite modification based air blower shell of the automotive air conditioner, prepared by the method, has excellent weather resistance and mechanical properties; meanwhile, the preparation method has the advantages that the steps are simple, and the raw materials are readily available.

Description

Technical field [0001] The invention relates to automobile air-conditioning parts, in particular to an automobile air-conditioning blast shell modified based on expanded vermiculite and a preparation method thereof. Background technique [0002] The car air-conditioning blower shell is an important part of the car air-conditioning blower. The car air-conditioning blower mainly blows out hot or cold air to play the role of gas circulation, while the car air-conditioning blower shell protects the car air conditioner The internal parts of the blower also play a role in forming the air duct. [0003] At present, the blast housing of automobile air conditioners is generally made of polymer materials. Due to the large temperature difference between the temperature of the car air conditioner blast shell during operation and the temperature after it stops working, under such a large temperature difference, the car air conditioner blast shell often deforms and affects the fan. The working...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L23/12C08L77/00C08L93/04C08L1/28C08L3/02C08L83/04C08K13/04C08K7/26C08K3/04C08K5/12C08K3/22
CPCC08L69/00C08L2205/035C08L23/12C08L77/00C08L93/04C08L1/284C08L3/02C08L83/04C08K13/04C08K7/26C08K3/04C08K5/12C08K2003/2296
Inventor 李茂勇陈天祥
Owner 芜湖德鑫汽车空调有限公司