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

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

Active Publication Date: 2008-09-03
NANJING JINSHAN AUTOMOBILE ENG PLASTIC
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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 materials according to the following formula:

[0033] ① 80 parts by mass of polypropylene;

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

[0035] ③Low molecular weight 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, isopropanol, water, and antioxidant at a low speed of 300~500 rpm for 3 minutes, then add ultra-fine talcum powder and mix at a low speed of 300~500 rpm for 8 minutes to obtain a premix After the premix is ​​extruded and pelletized by an extruder under a three-stage vacuum condition, a special material for low-dispersion automotive interior parts is obtained.

[0038] The properties of the prepared special materials are as follows:

[0039] Specific gravity 1.02

[0040] Elongation at break 276%

[0041] Tensile strength 25.45MPa

[0042] Flexural modulus 1.8GPa

[0043] Flexural strength 43MPa

[0044] Unnotched Izod impact...

Embodiment 2

[0048] Prepare materials according to the following formula

[0049] ①85 parts by mass of PP;

[0050] ②15 parts by mass of ultrafine talc powder (particle size 0.5-10μm);

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

[0052] ④ Antioxidant 1010 2.0 parts by mass;

[0053] Firstly, PP, sodium bicarbonate, water, and antioxidant are mixed at low speed 300~500rpm for 5 minutes, then superfine talcum powder is added and mixed at low speed 300~500rpm for 10 minutes to obtain a premix After the premix is ​​extruded and pelletized by an extruder under a three-stage vacuum condition, a special material for low-dispersion automotive interior parts is obtained.

[0054] The properties of the prepared special materials are as follows:

[0055] Specific gravity 1.01

[0056] Elongation at break 225%

[0057] Tensile strength 25.20MPa

[0058] Flexural modulus 1.8GPa

[0059] Flexural strength 41MPa

[0060] Unnotched Izod i...

Embodiment 3

[0064] Prepare materials according to the following formula

[0065] ① 90 parts by mass of PP;

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

[0067] ③Low molecular weight organic matter repellent (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] Firstly, PP, sodium bicarbonate, water, and antioxidant are mixed for 4 minutes at low speed in the range of 300-500 rpm, and then superfine talc is added and mixed at low speed in the range of 300-500 rpm for 5 minutes to obtain a premix After the premix is ​​extruded and pelletized by an extruder under a three-stage vacuum condition, a special material for low-dispersion automotive interior parts is obtained.

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

[0071] Specific gravity 1.00

[0072] Elongation at break 244%

[0073] Tensile strength 24.98MPa

[0074] Flexural modulus 1.6G...

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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 special material for low-spreading automobile interior parts and a preparation method thereof. Background technique [0002] At present, the low-odor polypropylene composite materials and processing technology used as automotive interior parts at home and abroad mainly have the following two methods. [0003] 1. Add adsorbent [0004] The method is mainly to add activated carbon, porous silica, porous alumina, porous molecular sieve and other adsorbents to polypropylene, and extrude and granulate through a screw extruder under certain technological conditions. The products prepared in this way have the problem of adsorption equilibrium. At higher temperatures, the equilibrium moves in the direction of desorption, resulting in the emission of small molecule volatiles. [0005] 2. Devolatilization [0006] It mainly uses professional devolatilization equipment and technology to devolatilize during polypropylene polymerization. Devol...

Claims

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Application Information

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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 NANJING JINSHAN AUTOMOBILE ENG PLASTIC
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