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Polypropylene (PP) material for automobile bumper

A technology for automobile bumpers and materials used in the field of PP materials, which can solve the problems of non-wear resistance, low temperature resistance, and impact resistance

Active Publication Date: 2013-09-25
CHANGSHU RES INSTITUE OF NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above technical problems, the present invention provides a PP automobile bumper material, which solves the technical problems of existing cable sheath materials such as easy aging, no impact resistance, no acid and alkali corrosion resistance, no wear resistance, and low low temperature resistance.

Method used

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  • Polypropylene (PP) material for automobile bumper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0064] PP-EPF30R 100;

[0065] ABS 30;

[0066] POE 15;

[0067] PP-g-MAH 10;

[0068] HDPE 10;

[0069] EPDM 15;

[0070] Talc powder 12;

[0071] wollastonite 5;

[0072] calcium carbonate 25.

[0073] Step 2: Mix the above PP, HDPE, and EPDM at 80°C for 5-10 minutes, raise the temperature to 100°C, add the rest of the materials, and stir for 10-15 minutes;

[0074] The third step: Extrude the mixed material in the second step to pelletize in a twin-screw extruder, and the extrusion temperature is 170°C, 165°C, 155°C, 150°C, 145°C.

[0075] The tensile strength of the product is 28MPa, the bending strength is 40MPa, the elongation at break is 550%, and the notched impact strength of the product is 50KJ / m 2 , Izod impact strength 600J / m.

Embodiment 2

[0077] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0078] PP-EPF30R 100;

[0079] ABS 25;

[0080] POE 15;

[0081] PP-g-MAH 10;

[0082] HDPE 10;

[0083] EPDM6;

[0084] Talc powder 20;

[0085] wollastonite 5;

[0086] Calcium Carbonate 50.

[0087] Step 2: Mix the above PP, HDPE, and EPDM at 80°C for 5-10 minutes, raise the temperature to 100°C, add the rest of the materials, and stir for 10-15 minutes;

[0088] The third step: Extrude the mixed material in the second step to pelletize in a twin-screw extruder, and the extrusion temperature is 170°C, 165°C, 155°C, 150°C, 145°C.

[0089] The tensile strength of the product is 28.5MPa, the bending strength is 41MPa, the elongation at break is 555%, and the notched impact strength of the product is 52KJ / m 2 , Izod impact strength 620J / m.

Embodiment 3

[0091] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0092] PP-EPF30R 100;

[0093] ABS 25;

[0094] POE 20;

[0095] PP-g-MAH 10;

[0096] HDPE 10;

[0097] EPDM6;

[0098] Talc powder 12;

[0099] Calcium carbonate 50;

[0100] wollastonite 5;

[0101] Titanate coupling agent 5.

[0102] Step 2: Mix the above PP, HDPE, and EPDM at 80°C for 5-10 minutes, raise the temperature to 100°C, add the rest of the materials, and stir for 10-15 minutes;

[0103] The third step: Extrude the mixed material in the second step to pelletize in a twin-screw extruder, and the extrusion temperature is 170°C, 165°C, 155°C, 150°C, 145°C.

[0104] The tensile strength of the product is 29MPa, the bending strength is 42MPa, the elongation at break is 570%, and the notched impact strength of the product is 55KJ / m 2 , Izod impact strength 640J / m.

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Abstract

The invention discloses a polypropylene (PP) material for an automobile bumper. The PP material comprises the following components in parts by mass: 100 parts of PP, 10-50 parts of ABS, 5-20 parts of an impact-resistant modifier, 1-20 parts of a compatilizer, 1-20 parts of high-density polyethylene (HDPE), 1-30 parts of ethylene-propylene-diene monomer (EPDM), 5-40 parts of a lubricating agent, 1-10 parts of wollastonite and 1-50 parts of calcium carbonate. The melt index of the product is more than 10g / 10 minutes; compared with the 0.1-0.25 g / 10 minutes of the conventional material, the melt index of the product is greatly improved; the tensile strength is 28-38MPa, the bending strength is 40-50 MPa, and the elongation at break is 550-650 percent; the thermal deformation temperature is 125-130 DEG C, the product resists the temperature of 40 DEG C below zero, the notch impact strength of the product is 50-70 KJ / m<2>, the cantilever beam impact strength is 600-700L / m, and the cantilever beam impact strength at the temperature of 40 DEG C below zero is 70-80L / m; and moreover, the product is excellent in impact resistance, high in ageing resistance, high in chemical corrosion resistance and high in fire resistance, can be widely produced and can continuously replace the conventional materials.

Description

technical field [0001] The invention belongs to the technical field of PP materials, and in particular relates to a PP automobile bumper material. Background technique [0002] Polypropylene PP plastic is another excellent resin variety developed after nylon. It is a linear polymer with high density, no side chains, and high crystallinity, and has excellent comprehensive properties. White translucent, waxy when unpigmented; lighter than polyethylene. The transparency is also better than polyethylene, and it is harder than polyethylene. With the development of social urbanization, technology, and humanization, and the rapid development of the plastic industry, PP materials are getting closer to people's lives, followed by an increase in the use of PP automotive bumper materials, and PP automotive materials. Most of the bumper materials are easy to age, not resistant to impact, not resistant to acid and alkali corrosion and wear, and low temperature resistance. [0003] Wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L55/02C08L23/06C08L23/16C08K13/02C08K3/34C08K3/26
Inventor 张宇
Owner CHANGSHU RES INSTITUE OF NANJING UNIV OF SCI & TECH
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