Unlock instant, AI-driven research and patent intelligence for your innovation.
Polypropylene (PP) material for automobile bumper
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
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
View PDF8 Cites 8 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
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
[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
[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
[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.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Property
Measurement
Unit
melt flow index
aaaaa
aaaaa
tensile strength
aaaaa
aaaaa
bending strength
aaaaa
aaaaa
Login to View More
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-dienemonomer (EPDM), 5-40 parts of a lubricating agent, 1-10 parts of wollastonite and 1-50 parts of calciumcarbonate. 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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
