CN103665571B - A kind of roof of the vehicle modified polypropylene plastic and preparation method thereof - Google Patents

Abstract

The invention discloses a kind of roof of the vehicle modified polypropylene plastic, it is characterized in that, be made up of the raw material of following weight part: Co-polypropylene 100-110, homo-polypropylene 12-15, nanometer silicon carbide 24-28, PPS12-15, ethylene glycol 3-5, Zinic stearas 3-4, anti-aging agent RD? 1-2, trolamine 1-2, activated Calcium carbonate 15-20, zinc oxide 4-7, aluminium nitride 4-6, maleic acid anhydride 2-3, auxiliary agent 6-9; The present invention has oilness, wear-resistant, and resistance to corrosion is strong, high-temperature oxidation resistant, and scratch-resistant is good, quick refrigeration sharply heats again, also can not be cracked, good stability of the dimension, and physical strength is high, the low and excellent combination property of cost.

Description

A kind of modified polypropylene plastic for automobile ceiling and preparation method thereof

technical field

The invention relates to a composite material for automobile interior decoration, in particular to a modified polypropylene plastic for automobile ceiling and a preparation method thereof.

Background technique

Automobiles have become one of the main means of transportation in modern society, and are large energy consumers. It is generally believed that the weight of auto parts is reduced by 1%, and the fuel consumption is also nearly 1%. Therefore, reducing the weight of auto parts is of great significance to energy saving and environmental protection. Among them, the most important method is to replace steel with plastic, so that polypropylene (PP) materials are widely used in bumpers, door panels, instrument panels, pillar guards, etc. Polypropylene (PP) has excellent heat resistance, good bending fatigue resistance, low price, and a wide range of uses; but PP has low impact toughness, poor creep resistance, large molding shrinkage, and poor dimensional stability; so polypropylene raw materials cannot Directly used in the automotive field, it must be modified, and most of them are added with inorganic fillers or tougheners to adjust the molding shrinkage of the material to achieve dimensional stability and good toughness. However, this will lead to an increase in the density of the molding material, which is not conducive to the overall lightweight of the car.

Contents of the invention

The purpose of the present invention is to provide a kind of modified polypropylene plastic for automobile ceiling and its preparation method.

In order to realize the purpose of the present invention, the present invention is implemented through the following schemes:

A modified polypropylene plastic for the roof of an automobile, made of the following raw materials in parts by weight: 100-110 copolymerized polypropylene, 12-15 homopolypropylene, 24-28 nanometer silicon carbide, PPS12-15, ethylene glycol 3 -5, zinc stearate 3-4, anti-aging agent RD1-2, triethanolamine 1-2, active calcium carbonate 15-20, zinc oxide 4-7, aluminum nitride 4-6, butenedioic anhydride 2-3 , additives 6-9;

Described auxiliary agent is made from the raw material of following weight part:

The modified polypropylene plastics for the automobile roof of the present invention is made by the following specific steps: heating copolymerized polypropylene and homopolypropylene to a molten state, adding anti-aging agent RD, triethanolamine, active calcium carbonate, zinc oxide, nitrogen Aluminum and butenedioic anhydride are stirred and kneaded for 20-25 minutes; then add additives and other remaining ingredients, heat to 240-250°C, stir for 8-10 minutes, send them to a twin-screw extruder for melt extrusion and granulation, and cool Instantly.

The excellent effects of the present invention are: the present invention has lubricity, wear resistance, strong corrosion resistance, high temperature resistance to oxidation, good scratch resistance, rapid cooling and rapid heating, will not be broken, good dimensional stability, mechanical High strength, low cost and excellent comprehensive performance.

detailed description

The present invention will be described in detail below through specific examples.

A modified polypropylene plastic for the roof of an automobile, which is made of the following raw materials in parts by weight (kg): copolymerized polypropylene 100, homopolypropylene 12, nanometer silicon carbide 24, PPS 12, ethylene glycol 3, zinc stearate 3. Antiaging agent RD1, triethanolamine 1, active calcium carbonate 15, zinc oxide 4, aluminum nitride 4, butenedioic anhydride 2, additive 6;

The auxiliary agent is made of the following raw materials in parts by weight (kg): clay 10, corundum powder 3, antioxidant ODA1, titanate coupling agent TMC-TTS3, ammonium dihydrogen phosphate 1, magnet 4, zinc stearate 2. Triethyl citrate 35, propyl gallate 3, nano titanium dioxide 0.2, nano diatomite powder 1, coix seed oil 3, vanadium diboride 1, epicatechin 2; the preparation method is to send clay and magnet Put it into a calciner and calcinate at 720-740°C for 2-3 hours, then take it out, soak it in 10-15% hydrochloric acid solution for 2-3 hours, filter to get the filter residue, wash it with water, dry it, and grind it Form into a 400-600 mesh powder; mix the obtained powder with other remaining ingredients, heat to 60-70°C, stir and react for 40-50 minutes, cool, and grind into a slurry to obtain.

The modified polypropylene plastics for the automobile roof of the present invention is made by the following specific steps: heating copolymerized polypropylene and homopolypropylene to a molten state, adding anti-aging agent RD, triethanolamine, active calcium carbonate, zinc oxide, nitrogen Aluminum and butenedioic anhydride are stirred and kneaded for 20-25 minutes; then add additives and other remaining ingredients, heat to 240-250°C, stir for 8-10 minutes, send them to a twin-screw extruder for melt extrusion and granulation, and cool Instantly.

The obtained product is tested according to the ISO standard, and the elastic modulus obtained through the test is 28420-46060Mpa, the bending strength is 147MPa, and the compressive strength is 490MPa.

Claims (2)

1. A modified polypropylene plastic for the roof of an automobile is characterized in that it is made of the raw materials of the following parts by weight: copolymerized polypropylene 100-110, homopolypropylene 12-15, nanometer silicon carbide 24-28, PPS12- 15. Ethylene glycol 3-5, zinc stearate 3-4, antioxidant RD1-2, triethanolamine 1-2, active calcium carbonate 15-20, zinc oxide 4-7, aluminum nitride 4-6, butyl Alkenic anhydride 2-3, additives 6-9; The auxiliary agent is made of the following raw materials in parts by weight: clay 10-12, corundum powder 3-4, antioxidant ODA1-2, titanate coupling agent TMC-TTS3-4, ammonium dihydrogen phosphate 1-2, Magnet 3-4, zinc stearate 2-3, triethyl citrate 35-40, propyl gallate 3-4, nano titanium dioxide 0.2-0.3, nano diatomaceous earth powder 1-2, barley oil 2-3 , vanadium diboride 1-2, epicatechin 2-3; the preparation method is to put clay and magnet into the calciner and calcinate at 720-740°C for 2-3 hours, then take it out and send it into 10-15 % hydrochloric acid solution for 2-3 hours, filter to obtain filter residue, wash with water, dry and grind into 400-600 mesh powder; mix the obtained powder with other remaining ingredients, heat to 60-70°C, stir React for 40-50 minutes, cool, and grind into a slurry, that is. 2. The modified polypropylene plastics for the automobile roof according to claim 1 is characterized in that it is made by the following specific steps: heating copolymerized polypropylene and homopolypropylene to a molten state, adding anti-aging agent RD, triethanolamine, Activated calcium carbonate, zinc oxide, aluminum nitride, and butenedioic anhydride are stirred and kneaded for 20-25 minutes; then add additives and other remaining ingredients, heat to 240-250°C, stir for 8-10 minutes, and send into twin-screw extrusion Melt extrusion on the machine to granulate and cool down.