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A kind of low VOC polypropylene composite material and preparation method thereof for automotive interior parts

A technology of automotive interior parts and composite materials, which is applied in the field of low-VOC polypropylene composite materials and its preparation, and can solve the problems of harming the health of the driver and passengers in the car, affecting the air quality in the car, and poor dimensional stability, etc. , to achieve the effect of increasing the scope of use, improving the molding process and appearance, and lowering the cost

Active Publication Date: 2016-01-27
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PP has disadvantages such as low impact toughness, poor creep resistance, large molding shrinkage, and poor dimensional stability; especially polypropylene composites generally contain certain odors, which mainly come from catalyst residues and monomers in the polymerization process. Small molecule compounds from solvent residues added during compound production and thermo-oxidative degradation during processing
It seriously affects the air quality in the car, which will seriously damage the health of the driver and passengers in the car
The above shortcomings limit the use of polypropylene composite materials, especially the use of polypropylene on products with high odor requirements, especially the use of long-term outdoor products and automotive products, so it is necessary to improve polypropylene. Odor performance can broaden the application range of polypropylene

Method used

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  • A kind of low VOC polypropylene composite material and preparation method thereof for automotive interior parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The low-VOC polypropylene composite material in this example is composed of the following raw materials by weight:

[0032] Copolymerized polypropylene 78.1 parts

[0033] Homopolypropylene 15 parts

[0034] High-density polyethylene resin (HDPE) 5 parts

[0035] Antioxidant 10760.3 parts

[0036] Antioxidant 1680.2 parts

[0037] Activated carbon 1.0 parts

[0038] Ethylene bis stearamide 0.5 parts

[0039] CYASORBUV-3808PP5 0.3 parts

[0040] Concrete preparation method comprises the following steps:

[0041] (1) Add the above-mentioned measured raw materials into the high-speed mixer and mix for 5 minutes;

[0042] (2) Put the mixed materials into a double-vacuum parallel twin-screw extruder for melting, extruding and granulating to obtain a modified polypropylene composite material; wherein the barrel temperature of the extruder is 220°C, and the screw speed is 450r / min, the melt pressure is 2.0MPa, and the vacuum degree is 0.05MPa.

[0043] (3) Pass the e...

Embodiment 2

[0046] The low-VOC polypropylene composite material in this example is composed of the following raw materials by weight:

[0047] Copolymerized polypropylene 49.6 parts

[0048] High-density polyethylene resin (HDPE) 8.0 parts

[0049] Ethylene-octene copolymer 15 parts

[0050] Talc powder 15 parts

[0051] Antioxidant 1680.2 parts

[0052] Porous silica 2.0 parts

[0053] Calcium stearate 0.8 parts

[0054] CYASORBUV-3808PP5 0.2 parts

[0055] Concrete preparation method comprises the following steps:

[0056] (1) Add the above-mentioned measured raw materials into the high-speed mixer and mix for 8 minutes;

[0057] (2) Put the mixed material into a twin-vacuum parallel twin-screw extruder for melting, extruding and granulating to obtain a modified polypropylene composite material; wherein the barrel temperature of the extruder is 180°C, and the screw speed is 400r / min, melt pressure is 1.5MPa, vacuum is 0.01MPa

[0058] (3) The extruded and granulated particles ...

Embodiment 3

[0060] The low-VOC polypropylene composite material in this example is composed of the following raw materials by weight:

[0061] Copolymerized polypropylene 40 parts

[0062] Copolymerized polypropylene 20 parts

[0063] High-density polyethylene resin (HDPE) 7 parts

[0064] EPDM rubber / propylene-alpha olefin copolymer 10 parts

[0065] Wollastonite 10 parts

[0066] 10 parts mica

[0067] Antioxidant 10760.3 parts

[0068] Antioxidant 1680.2 parts

[0069] Porous molecular sieve 3.0 parts

[0070] Polyethylene wax 0.5 parts

[0071] CYASORBUV-V680 0.4 parts

[0072] Concrete preparation method comprises the following steps:

[0073] (1) Add the above-mentioned measured raw materials into the high-speed mixer and mix for 2 minutes;

[0074](2) Put the mixed material into a twin-vacuum parallel twin-screw extruder for melting, extrusion and granulation to obtain a modified polypropylene composite material; wherein the temperature of the barrel of the extruder is 23...

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PUM

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Abstract

The present invention and a low-VOC polypropylene composite material for automotive interior parts and a preparation method thereof, the low-VOC polypropylene composite material is composed of polypropylene, high-density polyethylene resin, filler, toughening agent, odor absorber, The antioxidant, the lubricant and the light stabilizer are mixed according to the parts by weight, pelletized by a double-vacuum parallel twin-screw extruder, and the pellets are put into an oven for drying. The VOC content of the polypropylene composite material prepared by the invention is low, meets the technical requirements of the air quality evaluation guideline in the car, is suitable for use on the interior parts of the car, improves its application range, reduces the production cost of the car, and meets its light weight. Quantitative requirements.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a low-VOC polypropylene composite material used for automotive interior parts and a preparation method thereof. Background technique [0002] Polypropylene has become one of the fastest-growing varieties of plastic production due to its simple synthesis method, abundant raw material sources, low price, and good physical and mechanical properties and processing properties, and its output ranks third among the five general-purpose plastics. [0003] Polypropylene (PP) is widely used in the automotive industry due to its excellent heat resistance, good bending fatigue resistance and low price. However, PP has disadvantages such as low impact toughness, poor creep resistance, large molding shrinkage, and poor dimensional stability; especially polypropylene composites generally contain certain odors, which mainly come from catalyst residues and monomers in the polymerization process....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08L23/12C08L23/06C08K13/02C08K13/04C08K3/04C08K7/26C08K7/24B29B9/06B29B9/16
CPCB29B9/06B29C48/92B29C2948/92514B29C2948/9258B29C2948/92704C08K2201/014C08L23/14C08L2205/025C08L2205/03C08L2205/035C08L2207/062C08L23/12C08L23/06C08K13/02C08K3/04C08L23/0815C08K3/36C08L23/16C08K3/34C08K2003/2227
Inventor 林经萍周素蓉闫溥张奎高勇
Owner ORINKO NEW MATERIAL CO LTD
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