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Low-emanation automobile inner fitting special-purpose material and preparation thereof

A technology for automotive interior parts and special materials, applied in the field of low-emission special materials for automotive interior parts and its preparation, can solve the problems of high cost, complicated process, high odor emission, etc., and achieve low cost, high surface gloss, Low odor emission effect

Active Publication Date: 2011-03-30
南京金杉合成材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problems of high odor emission of current polypropylene (PP) composite materials and complex process and high cost of existing low-emission special materials for automotive interior parts, and provides a low-emission automobile Special material for interior parts and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Prepare according to the following formula:

[0033] ① 80 parts by mass of polypropylene;

[0034] ② 20 parts by mass of superfine talc powder (particle size 0.5-10 μm);

[0035] ③Low-molecular organic matter repellent (isopropanol / water) 2.0 parts by mass (ratio 3:1);

[0036] ④ antioxidant 1010 1.0 parts by mass;

[0037] First mix PP with isopropanol, water, and antioxidant at a low speed of 300-500 rpm for 3 minutes, then add ultra-fine talc powder and mix at a low speed of 300-500 rpm for 8 minutes to obtain a premixed The premixed material is extruded and granulated by an extruder under a three-stage vacuum condition to obtain a low-emission special material for automotive interior parts.

[0038] The performance of the prepared special material is as follows after testing:

[0039] Specific gravity 1.02

[0040] Elongation at break 276%

[0041] Tensile strength 25.45MPa

[0042] Flexural modulus 1.8GPa

[0043] Bending strength 43MPa

[0044] Unnotched ...

Embodiment 2

[0048] Prepare according to the following formula

[0049] ①PP 85 parts by mass;

[0050] ② 15 parts by mass of superfine talc powder (particle size 0.5-10 μm);

[0051] ③ Low-molecular organic matter repellent (sodium bicarbonate / water) 1.0 parts by mass (ratio 1:10);

[0052] ④ antioxidant 1010 2.0 parts by mass;

[0053] First mix PP with sodium bicarbonate, water, and antioxidant at a low speed of 300-500 rpm for 5 minutes, then add ultra-fine talc powder and mix for 10 minutes at a low speed of 300-500 rpm to obtain a premixed The premixed material is extruded and granulated by an extruder under a three-stage vacuum condition to obtain a low-emission special material for automotive interior parts.

[0054] The performance of the prepared special material is as follows after testing:

[0055] Specific gravity 1.01

[0056] Elongation at break 225%

[0057] Tensile strength 25.20MPa

[0058] Flexural modulus 1.8GPa

[0059] Bending strength 41MPa

[0060] Unnotched...

Embodiment 3

[0064] Prepare according to the following formula

[0065] ①PP 90 parts by mass;

[0066] ② 10 parts by mass of superfine talc powder (particle size 0.5-10 μm);

[0067] ③ Low-molecular organic matter repellant (sodium bicarbonate / water) 2.0 parts by mass (ratio 1:5);

[0068] ④ antioxidant 1010, antioxidant DLTP 2.0 parts by mass (ratio 1: 1);

[0069] First mix PP with sodium bicarbonate, water, and antioxidant at a low speed of 300-500 rpm for 4 minutes, then add ultra-fine talc powder and mix at a low speed of 300-500 rpm for 5 minutes to obtain a premixed The premixed material is extruded and granulated by an extruder under a three-stage vacuum condition to obtain a low-emission special material for automotive interior parts.

[0070] The properties of the prepared special material are as follows:

[0071] Specific gravity 1.00

[0072] Elongation at break 244%

[0073] Tensile strength 24.98MPa

[0074] Flexural modulus 1.6GPa

[0075] Bending strength 39MPa

[00...

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Abstract

The invention relates to a kind of low emission type special material for ornament in motor and preparation method, comprising(by weight parts): polypropylene 80-90 parts, superfine talcum powder 10-20 parts, organic expellent of low molecule 1.0-3.0 parts, antioxidant 1.0-2.0 parts. The method comprises: 1) stirring and mixing the polypropylene and organic expellent of low molecule, antioxidant at rotate speed of 300-500 rpm for 3-5 minutes; 2) adding superfine talcum powder and stirring and mixing at rotate speed of 300-500 rpm for 5-10 minutes to obtain premix material; 3) three-stage vacuum extruding the premix material by extruder to pelletizen finally the finished product being obtained. The invention has features: low odor emission, low cost, high surfaceness, better impact resistance, intension and toughness and good melt flowing, widely used in production of ornament in motor.

Description

technical field [0001] The invention relates to a low-emission special material for automotive interior parts and a preparation method thereof. Background technique [0002] At present, the low-odor polypropylene composite materials and processing techniques used for automotive interior parts at home and abroad mainly include the following two methods. [0003] 1. Add adsorbent [0004] The method is mainly to add adsorbents such as activated carbon, porous silica, porous alumina, porous molecular sieve to polypropylene, and extrude and granulate under certain process conditions through a screw extruder. The product prepared in this way has the problem of adsorption balance, and the balance moves to the direction of desorption at a higher temperature, resulting in the emission of small molecule volatiles. [0005] 2. Devolatilization [0006] It mainly uses professional devolatilization equipment and technology to carry out devolatilization in the process of polypropylene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K5/04B29C47/00B29B9/12C08K3/34C08K3/26B29L31/58
Inventor 吴锡忠崔益华汪家宝沈玉海
Owner 南京金杉合成材料有限公司
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