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Method for preparing composite polypropylene shell of automobile igniter

A technology for compounding polypropylene and automobile points, which is applied in the field of preparing compound polypropylene automobile igniter shells, can solve the problems of high temperature sensitivity and limited application, and achieves low high temperature sensitivity, improved Vicat softening point, and thermal stability. effect of effect

Inactive Publication Date: 2018-06-22
蚌埠泰欣电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polypropylene has a regular structure, higher mechanical strength than chlorosulfonated polyethylene, good electrical properties, chemical resistance, etc., but it is sensitive to high temperature, which limits its application in automobile igniter casings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method for a composite polypropylene automobile igniter shell, comprising the steps of:

[0019] S1. Mix 50g polypropylene, 30g chlorosulfonated polyethylene, 2g monoalkoxy unsaturated fatty acid titanate, and 4g epoxy resin, heat up to 70°C and stir for 30min, add 6g styrene-butadiene rubber, 12g zinc oxide, 6g Diatomite, 8g of hard clay, 5g of medical stone powder, 10g of expanded perlite, 15g of nano-titanium dioxide, heated up to 95°C and continued to stir for 5min, cooled to obtain premix a;

[0020] S2. Add 2g of 1,1-bis-(tert-butylperoxy)cyclohexane, 2.5g of triethylenetetramine, 2g of light stabilizer, and 5g of antioxidant to 120g of the premixed material, raise the temperature to 110°C and continue stirring for 8min. Get premix b;

[0021] S3. Extrude and granulate the premix b through a twin-screw extruder. The barrel temperature of the extruder is 170°C in the first zone, 195°C in the second zone, 205°C in the third zone, and 200°C in the four...

Embodiment 2

[0023] A preparation method for a composite polypropylene automobile igniter shell, comprising the steps of:

[0024] S1. Mix 70g polypropylene, 20g chlorosulfonated polyethylene, 4g monoalkoxy unsaturated fatty acid titanate, and 2g epoxy resin, heat up to 80°C and stir for 20min, add 14g styrene-butadiene rubber, 6g zinc oxide, 12g Diatomite, 4g of hard clay, 9g of medical stone powder, 6g of expanded perlite, 25g of nano-titanium dioxide, heated up to 85°C and continued to stir for 12min, cooled to obtain premix a;

[0025] S2. Add 4g of 1,1-bis-(tert-butylperoxy)cyclohexane, 1.5g of triethylenetetramine, 4g of light stabilizer, and 3g of antioxidant to 100g of the premix, heat up to 118°C and continue stirring for 2min. Get premix b;

[0026] S3. Extrude and granulate the premix b through a twin-screw extruder. The temperature of the first zone of the extruder barrel is 178°C, the temperature of the second zone is 185°C, the temperature of the third zone is 215°C, and the...

Embodiment 3

[0028] A preparation method for a composite polypropylene automobile igniter shell, comprising the steps of:

[0029] S1. Mix 55g polypropylene, 28g chlorosulfonated polyethylene, 2.5g monoalkoxy unsaturated fatty acid titanate, and 3.5g epoxy resin, heat up to 73°C and stir for 28min, add 8g styrene-butadiene rubber, 10g zinc oxide , 8g diatomite, 7g hard clay, 6g medical stone powder, 9g expanded perlite, 18g nano-titanium dioxide, heat up to 92°C and continue stirring for 8min, cool to obtain premix a;

[0030] S2. Add 2.5g of 1,1-bis-(tert-butylperoxy)cyclohexane, 2.2g of triethylenetetramine, 2.5g of light stabilizer, and 4.5g of antioxidant to 115g of the premix, and heat up to 112°C to continue Stir for 6min to obtain premix b;

[0031] S3. Extrude and granulate the premix b through a twin-screw extruder. The barrel temperature of the extruder is 172°C in the first zone, 192°C in the second zone, 208°C in the third zone, and 198°C in the fourth zone. , the mold temper...

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Abstract

The invention discloses a method for preparing a composite polypropylene shell of an automobile igniter. The method comprises the following steps: mixing polypropylene, chlorosulfonated polyethylene,monoalkoxy unsaturated fatty acid titanate and epoxy resin, carrying out heating and stirring, then adding styrene-butadiene rubber, zinc oxide, diatomite, hard china clay, Chinese medical stone powder, expanded perlite, nanometer titanium dioxide, carrying out heating, continuing stirring, and carrying out cooling to obtain a premix a; adding 1,1-bis(tert-butylperoxy)cyclohexane, triethylenetetramine, a light stabilizer and an antioxidant into the premix a, carrying out heating and continuing stirring so as to obtain a premix b; and subjecting the premix b to extrusion and granulation by a twin-screw extruder and carrying out molding so as to obtain the composite polypropylene shell of the automobile igniter. According to the preparation method for the composite polypropylene shell of theautomobile igniter, the prepared automobile igniter has the advantages of good rigidity, high bending strength, high flexural modulus, good impact strength and thermal stability, low high-temperaturesensitivity, and good resistance to load and pressure at high temperature for a long time.

Description

technical field [0001] The invention relates to the technical field of igniter casings, in particular to a preparation method of a composite polypropylene automobile igniter casing. Background technique [0002] As one of the five general-purpose plastics in the world, polypropylene has the characteristics of rich sources, high cost performance, and light weight, and is widely used. Polypropylene has a regular structure, higher mechanical strength than chlorosulfonated polyethylene, good electrical properties, chemical resistance, etc., but it is highly sensitive to high temperature, which limits its application in automobile igniter casings. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a method for preparing a composite polypropylene car igniter shell. The obtained igniter shell has good rigidity, high bending strength, high flexural elastic modulus, and good impact resistance and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/34C08L63/00C08L9/06C08K13/04C08K5/10C08K3/22C08K3/34C08K7/26
CPCC08L23/12C08K2003/2241C08K2003/2296C08K2201/011C08L2201/08C08L2205/035C08L23/34C08L63/00C08L9/06C08K13/04C08K5/10C08K3/22C08K3/34C08K3/346C08K7/26
Inventor 王雄彬
Owner 蚌埠泰欣电子科技有限公司
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