CN111040305A - Plastic product for front end framework of automobile - Google Patents
Plastic product for front end framework of automobile Download PDFInfo
- Publication number
- CN111040305A CN111040305A CN201911385243.0A CN201911385243A CN111040305A CN 111040305 A CN111040305 A CN 111040305A CN 201911385243 A CN201911385243 A CN 201911385243A CN 111040305 A CN111040305 A CN 111040305A
- Authority
- CN
- China
- Prior art keywords
- parts
- plastic product
- automobile
- end framework
- raw materials
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a plastic product for a front end framework of an automobile, which is prepared from the following raw materials in parts by weight: 40-50 parts of polypropylene, 30-40 parts of modified polyphenyl ether, 4-10 parts of tributyl phosphate, 6-10 parts of polyphenylene sulfide, 2-6 parts of polyamide-6, 0.5-2 parts of calcium carbonate, 5-15 parts of impact resistance modifier, 2-8 parts of filler and 1-5 parts of urea resin. The plastic product for the front end framework of the automobile has low cost and light weight, can effectively reduce the weight of the whole automobile and reduce the production cost, and reduces the carbon emission due to the reduction of the weight, thereby being beneficial to protecting the environment; according to the plastic product for the front end framework of the automobile, the high temperature resistance of the plastic product can be obviously improved by adding the modified polyphenyl ether and the polyphenyl thioether; the plastic product for the front end framework of the automobile can obviously improve the impact strength of the plastic product by adding the modified polyphenyl ether and the impact resistance modifier.
Description
Technical Field
The invention relates to the field of plastic products, in particular to a plastic product for a front end framework of an automobile.
Background
At present, the main direction of the development of the automobile material technology in the world is light weight, the reduction of the weight of an automobile is the most effective measure for reducing the emission of the automobile and improving the fuel efficiency, the self weight of the automobile is reduced by 10%, the consumption of fuel oil can be reduced by 6-8%, in China, plastics account for 7-10% of the self weight of the automobile, low-carbon economy is developed, the low-carbon society is built, and two main ways are provided for realizing the light weight of the automobile: structural optimization design and application of lightweight materials.
The automobile front end framework is a general name of components such as a T-shaped beam, a headlamp bracket and an upper cross beam at the front end of a whole automobile engine room, the traditional automobile front end framework adopts various metal plate welding structures, and has the defects of multiple parts, high weight, multiple processes, high cost and the like, and the plastic front end framework adopts plastic products, so that the parts can be effectively reduced, the weight is reduced, the processes are fewer, and the cost is low.
Disclosure of Invention
The plastic product has excellent heat resistance, high impact strength, low cost and light weight.
The invention adopts the following technical scheme for solving the technical problems:
a plastic product for an automobile front end framework is prepared from the following raw materials in parts by weight: 40-50 parts of polypropylene, 30-40 parts of modified polyphenyl ether, 4-10 parts of tributyl phosphate, 6-10 parts of polyphenylene sulfide, 2-6 parts of polyamide-6, 0.5-2 parts of calcium carbonate, 5-15 parts of impact resistance modifier, 2-8 parts of filler and 1-5 parts of urea resin.
As a most preferable scheme, the plastic product for the front end framework of the automobile is prepared from the following raw materials in parts by weight: 45 parts of polypropylene, 35 parts of modified polyphenyl ether, 7 parts of tributyl phosphate, 8 parts of polyphenylene sulfide, 4 parts of polyamide-6, 1 part of calcium carbonate, 10 parts of impact resistance modifier, 5 parts of filler and 2 parts of urea resin.
As a preferred scheme, the impact modifier is chlorinated polyethylene.
Preferably, the filler is alumina.
As a preferable scheme, the modified polyphenylene oxide is prepared from the following raw materials in parts by weight: 51.1-60.3 parts of polyphenyl ether, 20-30 parts of polystyrene, 4.2-6.3 parts of dioctyl ester, 2.2-3.4 parts of promoter TMTD, 1-3 parts of maleic anhydride grafted polyethylene, 2-4 parts of coconut monoethanolamide and 1-2 parts of kaolin.
As a most preferable scheme, the modified polyphenylene ether is prepared from the following raw materials in parts by weight: 55.2 parts of polyphenyl ether, 25 parts of polystyrene, 5 parts of dioctyl ester, 2.8 parts of an accelerator TMTD, 2 parts of maleic anhydride grafted polyethylene, 3 parts of coconut monoethanolamide and 1.5 parts of kaolin.
As a preferable scheme, the preparation method of the modified polyphenylene ether comprises the following steps: weighing raw materials according to a formula, adding the raw materials into a mixer, uniformly mixing, and then transferring into a double-screw extruder, wherein the rotating speed of a screw is 300-500 r/min, the extrusion temperature is 190-210 ℃, and the length-diameter ratio of the double-screw extruder is 10-12: 1, the diameter of the screw is 60-80 mm, and the modified polyphenyl ether is obtained by melt extrusion.
As a most preferred embodiment, the modified polyphenylene ether is prepared by the following steps: weighing raw materials according to a formula, adding the raw materials into a mixer, uniformly mixing, and then transferring into a double-screw extruder, wherein the rotating speed of a screw is 400r/min, the extrusion temperature is 190-210 ℃, and the length-diameter ratio of the double-screw extruder is 11: 1, the diameter of the screw is 70mm, and the modified polyphenyl ether is obtained by melt extrusion.
As a preferable scheme, the rotating speed of the mixer is 450r/min, and the mixing time is 2 min.
The invention also provides a preparation method of the plastic product for the front end framework of the automobile, which comprises the following steps: weighing raw materials according to a formula, adding the raw materials into a mixer, uniformly mixing, transferring into a double-screw extruder, carrying out melt extrusion, and carrying out injection molding to obtain the plastic product for the front end framework of the automobile.
As a preferable scheme, the rotating speed of the mixer is 450-550 r/min, and the mixing time is 1.5-2.5 min.
As a most preferred scheme, the rotating speed of the mixer is 500r/min, and the mixing time is 2 min.
As a preferable scheme, the screw rotating speed of the double-screw extruder is 500-700 r/min, the extrusion temperature is 190-210 ℃, and the length-diameter ratio of the double-screw extruder is 12-15: 1, the diameter of the screw is 80-100 mm.
As a preferable scheme, the screw rotating speed of the double-screw extruder is 600r/min, the extrusion temperature is 190-210 ℃, and the length-diameter ratio of the double-screw extruder is 14: 1, the diameter of the screw is 90 mm.
The invention has the beneficial effects that: (1) the plastic product for the front end framework of the automobile is prepared from polypropylene, modified polyphenyl ether, tributyl phosphate, polyphenylene sulfide, polyamide-6, calcium carbonate, an impact resistance modifier, a filler and urea resin, has low cost and light weight, can effectively reduce the weight of the whole automobile and reduce the production cost, and is beneficial to environmental protection because the carbon emission is reduced due to the reduction of the weight; (2) according to the plastic product for the front end framework of the automobile, the high temperature resistance of the plastic product can be obviously improved by adding the modified polyphenyl ether and the polyphenyl thioether; (3) the plastic product for the front end framework of the automobile can obviously improve the impact strength of the plastic product by adding the modified polyphenyl ether and the impact resistance modifier.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The average molecular weight of the polypropylene is 11 ten thousand, the average molecular weight of the polyphenyl ether is 9680, the polyphenylene sulfide is purchased from Shanghai Eichh Biotechnology Co., Ltd, the chlorinated polyethylene is purchased from Guangzhou City original rubber raw material trade Co., Ltd, and the average molecular weight of the polystyrene is 150000.
Example 1
A plastic product for an automobile front end framework is prepared from the following raw materials in parts by weight: 45 parts of polypropylene, 35 parts of modified polyphenyl ether, 7 parts of tributyl phosphate, 8 parts of polyphenylene sulfide, 4 parts of polyamide-6, 1 part of calcium carbonate, 10 parts of impact resistance modifier, 5 parts of filler and 2 parts of urea resin.
The impact resistance modifier is chlorinated polyethylene.
The filler is alumina.
The modified polyphenyl ether is prepared from the following raw materials in parts by weight: 55.2 parts of polyphenyl ether, 25 parts of polystyrene, 5 parts of dioctyl ester, 2.8 parts of an accelerator TMTD, 2 parts of maleic anhydride grafted polyethylene, 3 parts of coconut monoethanolamide and 1.5 parts of kaolin.
As a preferable scheme, the preparation method of the modified polyphenylene ether comprises the following steps: weighing raw materials according to a formula, adding the raw materials into a mixer, uniformly mixing, and then transferring into a double-screw extruder, wherein the rotating speed of a screw is 400r/min, the extrusion temperature is 190-210 ℃, and the length-diameter ratio of the double-screw extruder is 11: 1, the diameter of the screw is 70mm, and the modified polyphenyl ether is obtained by melt extrusion.
As a preferable scheme, the rotating speed of the mixer is 450r/min, and the mixing time is 2 min.
The invention also provides a preparation method of the plastic product for the front end framework of the automobile, which comprises the following steps: weighing raw materials according to a formula, adding the raw materials into a mixer, uniformly mixing, transferring into a double-screw extruder, carrying out melt extrusion, and carrying out injection molding to obtain the plastic product for the front end framework of the automobile.
As a preferable scheme, the rotating speed of the mixer is 500r/min, and the mixing time is 2 min.
As a preferable scheme, the screw rotating speed of the double-screw extruder is 600r/min, the extrusion temperature is 190-210 ℃, and the length-diameter ratio of the double-screw extruder is 14: 1, the diameter of the screw is 90 mm.
Example 2
The difference between the embodiment 2 and the embodiment 1 is that the raw material ratio of the plastic product used for the automobile front end framework is different, and the other parts are the same.
A plastic product for an automobile front end framework is prepared from the following raw materials in parts by weight: 40 parts of polypropylene, 30 parts of modified polyphenyl ether, 4 parts of tributyl phosphate, 6 parts of polyphenylene sulfide, 2 parts of polyamide-6, 0.5 part of calcium carbonate, 5 parts of impact resistance modifier, 2 parts of filler and 1 part of urea resin.
Example 3
The difference between the embodiment 3 and the embodiment 1 is that the raw material ratio of the plastic product used for the automobile front end framework is different, and the other parts are the same.
A plastic product for an automobile front end framework is prepared from the following raw materials in parts by weight: 50 parts of polypropylene, 40 parts of modified polyphenyl ether, 10 parts of tributyl phosphate, 10 parts of polyphenylene sulfide, 6 parts of polyamide-6, 2 parts of calcium carbonate, 15 parts of impact resistance modifier, 8 parts of filler and 5 parts of urea resin.
Comparative example 1
Comparative example 1 differs from example 1 in that comparative example 1 does not contain a modified polyphenylene ether, and the other is the same.
Comparative example 2
Comparative example 2 is different from example 1 in that comparative example 2 replaces the modified polyphenylene ether with polyphenylene ether, and the other is the same.
Comparative example 3
Comparative example 3 is different from example 1 in that comparative example 3 does not contain polyphenylene sulfide, and the others are the same.
Comparative example 4
Comparative example 4 differs from example 1 in that comparative example 4 does not contain an impact modifier and is otherwise identical.
To further demonstrate the effect of the present invention, the following test methods were provided:
1. the plastic articles were tested for extreme temperature resistance according to Q/JLY J7110192B-2016, and the results are shown in Table 1.
2. The impact strength of the plastic article was measured according to the method for testing Plastic Izod impact test GB/T1843-80, and the results are shown in Table 1.
TABLE 1 test values
As can be seen from table 1, example 1 has the best heat resistance and impact strength, and comparative examples 1 to 3 show that the raw material ratio of the plastic product of the present invention can affect the heat resistance and impact strength of the plastic product, wherein example 1 is the best mode of execution, and comparative example 1, comparative examples 1 and 2 show that the modified polyphenylene ether of the present invention can significantly improve the heat resistance and impact strength of the plastic product, and the modified polyphenylene ether has better heat resistance and impact strength than the plastic product made of unmodified polyphenylene ether, and comparative example 1 and comparative example 3 show that the polyphenylene sulfide can significantly improve the heat resistance of the plastic product, and has little effect on impact strength, and the effect on heat resistance is not as significant as the modified polyphenylene ether; it is known from comparative example 1 and comparative example 4 that the impact modifier can significantly improve the impact strength, but the improvement effect is not as significant as that of the modified polyphenylene ether, and the influence on the heat resistance is small.
In light of the foregoing description of preferred embodiments according to the invention, it is clear that many changes and modifications can be made by the person skilled in the art without departing from the scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A plastic product for a front end framework of an automobile is characterized by being prepared from the following raw materials in parts by weight: 40-50 parts of polypropylene, 30-40 parts of modified polyphenyl ether, 4-10 parts of tributyl phosphate, 6-10 parts of polyphenylene sulfide, 2-6 parts of polyamide-6, 0.5-2 parts of calcium carbonate, 5-15 parts of impact resistance modifier, 2-8 parts of filler and 1-5 parts of urea resin.
2. The plastic product for the front end framework of the automobile according to claim 1, which is prepared from the following raw materials in parts by weight: 45 parts of polypropylene, 35 parts of modified polyphenyl ether, 7 parts of tributyl phosphate, 8 parts of polyphenylene sulfide, 4 parts of polyamide-6, 1 part of calcium carbonate, 10 parts of impact resistance modifier, 5 parts of filler and 2 parts of urea resin.
3. The plastic product for the front end frame of an automobile according to claim 1, wherein the impact modifier is chlorinated polyethylene.
4. The plastic product for the front end frame of an automobile according to claim 1, wherein the filler is alumina.
5. The plastic product for the front end frame of the automobile as claimed in claim 1, wherein the modified polyphenylene ether is prepared from the following raw materials in parts by weight: 51.1-60.3 parts of polyphenyl ether, 20-30 parts of polystyrene, 4.2-6.3 parts of dioctyl ester, 2.2-3.4 parts of promoter TMTD, 1-3 parts of maleic anhydride grafted polyethylene, 2-4 parts of coconut monoethanolamide and 1-2 parts of kaolin.
6. The plastic product for the front end skeleton of an automobile according to claim 1, wherein the modified polyphenylene ether is prepared by a method comprising: weighing raw materials according to a formula, adding the raw materials into a mixer, uniformly mixing, and then transferring into a double-screw extruder, wherein the rotating speed of a screw is 300-500 r/min, the extrusion temperature is 190-210 ℃, and the length-diameter ratio of the double-screw extruder is 10-12: 1, the diameter of the screw is 60-80 mm, and the modified polyphenyl ether is obtained by melt extrusion.
7. The plastic product for the front end framework of the automobile as claimed in claim 6, wherein the rotating speed of the mixer is 400-500 r/min, and the mixing time is 1.5-2.5 min.
8. The method for preparing a plastic product for an automobile front end framework according to any one of claims 1 to 7, which is characterized by comprising the following steps: weighing raw materials according to a formula, adding the raw materials into a mixer, uniformly mixing, transferring into a double-screw extruder, carrying out melt extrusion, and carrying out injection molding to obtain the plastic product for the front end framework of the automobile.
9. The method for preparing the plastic product for the front end framework of the automobile as claimed in claim 8, wherein the rotating speed of the mixer is 450-550 r/min, and the mixing time is 1.5-2.5 min.
10. The preparation method of the plastic product for the front end framework of the automobile as claimed in claim 8, wherein the screw rotation speed of the twin-screw extruder is 500-700 r/min, the extrusion temperature is 190-210 ℃, and the length-diameter ratio of the twin-screw extruder is 12-15: 1, the diameter of the screw is 80-100 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911385243.0A CN111040305A (en) | 2019-12-28 | 2019-12-28 | Plastic product for front end framework of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911385243.0A CN111040305A (en) | 2019-12-28 | 2019-12-28 | Plastic product for front end framework of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111040305A true CN111040305A (en) | 2020-04-21 |
Family
ID=70241026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911385243.0A Pending CN111040305A (en) | 2019-12-28 | 2019-12-28 | Plastic product for front end framework of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111040305A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113308048A (en) * | 2021-06-01 | 2021-08-27 | 苏州市双虎科技有限公司 | Graphite alloy high-thermal-conductivity and electric-conductivity composite material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140239A (en) * | 2011-05-16 | 2011-08-03 | 刘立文 | Calcium sulfate whisker modified polyphenyl ether composite material and preparation method thereof |
| CN102516743A (en) * | 2011-12-09 | 2012-06-27 | 上海锦湖日丽塑料有限公司 | Automotive resin composition and its preparation method |
| CN106928540A (en) * | 2015-12-31 | 2017-07-07 | 中国石油天然气股份有限公司 | A kind of just heat-resistance polypropylene/polyphenylene sulfide PP/PPS alloys and preparation method thereof high |
-
2019
- 2019-12-28 CN CN201911385243.0A patent/CN111040305A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140239A (en) * | 2011-05-16 | 2011-08-03 | 刘立文 | Calcium sulfate whisker modified polyphenyl ether composite material and preparation method thereof |
| CN102516743A (en) * | 2011-12-09 | 2012-06-27 | 上海锦湖日丽塑料有限公司 | Automotive resin composition and its preparation method |
| CN106928540A (en) * | 2015-12-31 | 2017-07-07 | 中国石油天然气股份有限公司 | A kind of just heat-resistance polypropylene/polyphenylene sulfide PP/PPS alloys and preparation method thereof high |
Non-Patent Citations (2)
| Title |
|---|
| 朱洪法，朱玉霞编著: "《塑料配方设计问答》", vol. 1, 中国轻工业出版社, pages: 144 - 149 * |
| 汪多仁编著: "《合成树脂与工程塑料生产技术》", vol. 1, 31 August 2001, 中国轻工业出版社, pages: 47 - 48 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113308048A (en) * | 2021-06-01 | 2021-08-27 | 苏州市双虎科技有限公司 | Graphite alloy high-thermal-conductivity and electric-conductivity composite material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102702733B (en) | Composite material special for blow molding of reinforced nylon air inlet pipe and preparation method thereof | |
| CN102585478B (en) | Toughened polyphenyl ether and nylon alloy and preparation method for toughened polyphenyl ether and nylon alloy | |
| CN106366454B (en) | High-performance thin-walled automobile door plate modified polypropylene material and preparation method thereof | |
| CN106752633B (en) | A kind of easy spray coating polypropylene composite material and preparation method and application | |
| CN104387663B (en) | A kind of long glass fiber reinforced polypropylene composite material and its preparation method and application | |
| CN104194300B (en) | Ageing-resistant antibacterial PC/ABS blend alloy and preparation method thereof | |
| CN101402784A (en) | Glass fiber reinforced polyethylene terephthalate composite material and method of producing the same | |
| CN103554667B (en) | Composition and the method for making thereof of discarded CFRP powder regeneration RPP | |
| CN104693606A (en) | Plant fiber-reinforced polypropylene composite material and preparation method thereof, and application of plant fiber-reinforced polypropylene composite material in preparation of automobile components | |
| CN102702614B (en) | Composite polypropylene automobile door panel module | |
| CN112375324B (en) | HIPS (high impact polystyrene) composite material as well as preparation method and application thereof | |
| CN111763383B (en) | Good-touch glass fiber reinforced polypropylene composite and preparation method thereof | |
| CN111040305A (en) | Plastic product for front end framework of automobile | |
| CN104861287A (en) | Whisker-modifying PP composite material used for automobile meter desk and preparation method thereof | |
| CN108047503A (en) | A kind of PBAT polyester compositions and preparation method thereof and nucleating agent used | |
| CN108219210B (en) | Composite plasticizer and method for preparing starch/PBS (Poly Butylene succinate) blend by using same | |
| CN103980699B (en) | Automotive upholstery anti-aging high temperature resistant PA6/PP alloy and preparation method | |
| CN105367904A (en) | Novel high-fluidity low-shrinkage composite polypropylene auto-material and preparation method thereof | |
| CN109721853A (en) | A kind of low gloss can be used for automotive upholstery, resistance to scratching PP composite material and preparation method thereof | |
| CN108239393B (en) | Light polyamide composition and preparation method thereof | |
| CN104194154A (en) | Composite polypropylene automobile material with high fluidity and low shrinking percentage and preparation method thereof | |
| CN108164912A (en) | A kind of low abrasion scratch-resistant ABS material and preparation method thereof | |
| CN109503944B (en) | High-strength acid-alkali-resistant polypropylene composite material and preparation method thereof | |
| CN114539678B (en) | Energy-saving regenerated polypropylene composite material and preparation method thereof | |
| CN108707279A (en) | A kind of eutectic lapping defect exempts from spray coating polypropylene composite material and preparation method without current mark |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |