CN102746582A - Method for preparing metal-luster vehicle bumpers - Google Patents
Method for preparing metal-luster vehicle bumpers Download PDFInfo
- Publication number
- CN102746582A CN102746582A CN2012102710928A CN201210271092A CN102746582A CN 102746582 A CN102746582 A CN 102746582A CN 2012102710928 A CN2012102710928 A CN 2012102710928A CN 201210271092 A CN201210271092 A CN 201210271092A CN 102746582 A CN102746582 A CN 102746582A
- Authority
- CN
- China
- Prior art keywords
- parts
- screw extruder
- twin screw
- bumper
- vehicle bumpers
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a method for preparing metal-luster vehicle bumpers. Raw materirals of the method comprise, by weight, 71 parts of propene polymer (PP), 12 parts of metallocene polyethylene-hexene copolymer, 1 part of aluminum powder, 8 parts of polyolefin elastomer (POE), 1 part of aluminum powder and 6 parts of nano calcium carbonate, 0.6 part of oxidation inhibitor and 0.4 part of ethylene bis stearamide which are fully mixed in a mixer to obtain a mixture A. According to the method for preparing metal-luster vehicle bumpers, the aluminum powder is added into the PP to be mixed together, and the two serve as materials to be used for preparing vehicle bumpers, so that spray coating is not needed to be performed on surfaces of the vehicle bumpers and the surfaces are provided with metallic luster. As the method technology has metallic effects and the advantages of being short in molding cycle, high in production efficiency, light in weight, not easy to fall off, good in abrasion resistance and the like, the processing step of paint spraying in the production process of vehicle bumpers is saved, the production process is simplified, the production cost is reduced dramatically, the method is easy to implement, and the use effect is good.
Description
Technical field
The present invention relates to a kind of prescription and production technique of plastic material, especially a kind of preparation method with bumper of metalluster.
Background technology
Bumper is a large parts important in the automotive industry.Its environment for use requires material to have excellent high and low temperature impelling strength, rigidity, stability to aging, thermotolerance, winter hardiness, also will have performances such as anti-pool, lubricating oil, paint.Wherein the most important thing is to have higher impelling strength and good moulding processability.
In the painting dressing automobiles, the color of finish paint can be divided into two big types: true qualities and metallic color.True qualities can be divided into Chromatic color and Achromatic color again by its color.Metallic color also can be subdivided into flash metal luster look and pearly-lustre look, and the tendency of Chromatic colorization.During the nearly last ten years, automobile finish is coated with the reload request high-decorationization, uses the automobile of flash metal luster look and pearly-lustre look finish paint to increase year by year, and oneself surpasses 50% in car coating.At home the price of matel coated flash of light look finish paint automobile than true qualities want expensive several thousand yuan, but still develop very soon, popularization and application is to the application of minicar, middle the sixth of the twelve Earthly Branches, motor bus vehicle body, heavy automobile cab adopts flash metal luster look finish paint also to occupy certain ratio.The application of flash metal luster look originates in the later stage the 50's of 20th century, is base-material with Nitrocellulose varnish, and to the mid-1960s, the Application and Development of thermosetting acrylic resin makes the application of flash of light look be able to further develop.At that time coating process is identical with the true qualities finish paint, is one to be coated with a baking technology, and film performances such as its outward appearance, weathering resistance, acid resistance, alkali resistance are low; Just produce the disadvantage of the deterioration of filming in a short time.Got into for the 70's after all approach improve weathering resistance, scuff resistance and the decorative appearance film, just form two and be coated with the finish paint Lacquer finish coating process that dries by the fire, promptly now background color layer adds the finish paint coating process of Lacquer finish.For adapting to the needs of environmental regulation, American-European newly-built paint line has all adopted the finish paint system of environment-friendly type since the 90's, and promptly the water-based base coat adds the coating varnish of environment-friendly type.
The metallize polychromatic finish need be used custom-designed air gun, and the air gun of using with spraying true qualities finish paint compares, and the paint output is many, and air pressure is high, and injection is large-minded.With strong air pressure aluminium powder is knocked attached on the application surface at a high speed, and the aluminium powder trend is arranged in parallel, a large amount of air volatilizees the solvent in the coating at short notice, the flowing of aluminium powder that is being coated with is prevented from as quick as thought, but the air gun spray efficiency is low.For improving coating efficiency; In recent years the coating process that the electrostatic spraying metal flash paint occurs; When adopting electrostatic spraying metallize flash of light look base coat, being coated with efficient has raising by a relatively large margin, electrostatic spraying metallic basecoat occasion electrostatic interaction make aluminium powder arrange in filming in to being coated with the Surface Vertical arrangement; Diminish reflection of light, and make appearance of film not good.
The plasthetics that plastic material is processed has advantages such as shaping cycle is short, production efficiency is high, in light weight, therefore receives widespread use, and bumper is exactly wherein a kind of plastic prod.But the feel of common bumper is general, and luminance brightness is lower, in use surperficial easy abrasion, and the texture that does not possess present people and pursued, value added is not high.Therefore, carry out suitable surface treatment usually and improve its result of use.In the existing method, oneself improves the surface property of plasthetics through disclosing the method that plastic rubber substrate is carried out surface coated coating.But the coating adhesion that this method exists coating to form is low, comes off easily, wears no resistance; Can't life-time service etc. shortcoming, and the method for this coating composition, corresponding different plastic rubber substrate need use different coating; Otherwise sticking power maybe be poorer; And for bumper in irregular shape surface, lacquering technique is difficulty more, and not environmental protection.
Summary of the invention
The object of the present invention is to provide a kind of PP composite material preparation method who is used for bumper with H.T., HS, low-shrinkage; Need not the processing that the surface to bumper sprays and just have metalluster; The effect of its metalluster can not come off, fade; Appearance is desirable, and the wearing quality of product is strong, and the feature of environmental protection is good.
For achieving the above object, technical scheme of the present invention is: the preparation method of metalluster bumper,
The first step; Calculate by weight; With 71 parts of PP, 12 parts of metallocene ethene one hexene copolymers, 1 part of aluminium powder, 8 parts of POE, 1 part of aluminium powder and 6 parts of nano-calcium carbonates, 0.6 part of oxidation inhibitor, 0.4 part of ethylene bis stearamide obtain mixture A behind the thorough mixing in mixing machine;
Second step; The mixture A that step 1 is obtained joins in the twin screw extruder mixing; The temperature of twin screw extruder is set between 170 ℃~220 ℃, and the total residence time of mixture in twin screw extruder is 3~8min, and the twin screw extruder rotating speed is at 300~350r/min;
The 3rd step, the material that second step obtained is extruded postcooling, pelletizing, promptly obtain being used for the composite material granular B of bumper;
In the 4th step, the composite material granular B that the 3rd step was obtained joins injection moulding in the injection moulding machine, obtains collision bumper.
When adopting technique scheme,
The present invention is employed among the PP and adds the aluminium powder blend, and it is used to produce bumper as material, need not the processing that the surface to bumper sprays and just has metalluster; And the effect of its metalluster can not come off, fade; Even the surface of goods is abraded, weares and teares, its inside also still has metalluster, and need not carry out the process of surface treatment of metallize polychromatic finish to its surface; And wearing quality is strong, especially has excellent light aging resisting property.The present invention technology is owing to have metallic travel, and shaping cycle is short, production efficiency is high, in light weight, be not easy to come off; Advantages such as wear resistance is good; Use this bumper to save this process step that sprays paint in the production process, simplified Production Flow Chart, can significantly reduce production costs; Implement easily, result of use is good.
Further, the temperature that said twin screw extruder is every section is respectively: T1=170 ℃, T2=180 ℃, T3=190 ℃, T4=205 ℃, T5=210 ℃, T6=220 ℃, the twin screw extruder rotating speed is r=350r/min.
Embodiment
The preparation method of metalluster bumper of the present invention,
The first step; Calculate by weight; With 71 parts of PP, 12 parts of metallocene ethene one hexene copolymers, 1 part of aluminium powder, 8 parts of POE, 1 part of aluminium powder and 6 parts of nano-calcium carbonates, 0.6 part of oxidation inhibitor, 0.4 part of ethylene bis stearamide obtain mixture A behind the thorough mixing in mixing machine;
Second step; The mixture A that step 1 is obtained joins in the twin screw extruder mixing; The temperature of twin screw extruder is set between 170 ℃~220 ℃, and the total residence time of mixture in twin screw extruder is 3~8min, and the twin screw extruder rotating speed is at 300~350r/min;
The 3rd step, the material that second step obtained is extruded postcooling, pelletizing, promptly obtain being used for the composite material granular B of bumper;
In the 4th step, the composite material granular B that the 3rd step was obtained joins injection moulding in the injection moulding machine, obtains collision bumper.
The temperature that said twin screw extruder is every section is respectively: T1=170 ℃, T2=180 ℃, T3=190 ℃, T4=205 ℃, T5=210 ℃, T6=220 ℃, the twin screw extruder rotating speed is r=350r/min.
The present invention is employed among the PP and adds the material blend, and it is used to produce bumper as material, need not the processing that the surface to bumper sprays and just has metalluster; And the effect of its metalluster can not come off, fade; Even the surface of goods is abraded, weares and teares, its inside also still has metalluster, and need not carry out the process of surface treatment of metallize polychromatic finish to its surface; And wearing quality is strong, especially has excellent light aging resisting property.The present invention technology is owing to have metallic travel, and shaping cycle is short, production efficiency is high, in light weight, be not easy to come off; Advantages such as wear resistance is good; Use this bumper to save this process step that sprays paint in the production process, simplified Production Flow Chart, can significantly reduce production costs; Implement easily, result of use is good.
The present invention selects for use metallocene ethene one hexene copolymer as elastomeric component, and as strengthening toughness reinforcing component, modification goes out Vestolen PP 7052/metallocene ethene one hexene copolymer/nano calcium carbonate composite material to particle diameter less than the nano-calcium carbonate of 100nm;
The metallocene ethene one hexene copolymer percent crystallinity of selecting for use is low; Compare with traditional elastomeric EP DM; Do not have two keys in the molecular chain, have higher thermostability and ultraviolet stability, can give Vestolen PP 7052 high shock strength as polyacrylic plasticized modifier;
The nano-calcium carbonate of selecting for use, its grain diameter be less than 100nm, favourable raising composite material toughness of particle shape filler and surface hardness; The nano-calcium carbonate particle diameter is little in addition; Specific surface area is very big, has very high clean property, can form good bonding interface with polypropylene matrix.
Above-described only is preferred implementation of the present invention; Should be understood that; For a person skilled in the art, under the prerequisite that does not break away from the object of the invention, can also make some distortion and improvement; These also should be regarded as protection scope of the present invention, and these can not influence effect and practical applicability that the present invention implements.
Claims (2)
1. the preparation method of metalluster bumper is characterized in that:
The first step; Calculate by weight; With 71 parts of PP, 12 parts of metallocene ethene one hexene copolymers, 1 part of aluminium powder, 8 parts of POE, 1 part of aluminium powder and 6 parts of nano-calcium carbonates, 0.6 part of oxidation inhibitor, 0.4 part of ethylene bis stearamide obtain mixture A behind the thorough mixing in mixing machine;
Second step; The mixture A that step 1 is obtained joins in the twin screw extruder mixing; The temperature of twin screw extruder is set between 170 ℃~220 ℃, and the total residence time of mixture in twin screw extruder is 3~8min, and the twin screw extruder rotating speed is at 300~350r/min;
The 3rd step, the material that second step obtained is extruded postcooling, pelletizing, promptly obtain being used for the composite material granular B of bumper;
In the 4th step, the composite material granular B that the 3rd step was obtained joins injection moulding in the injection moulding machine, obtains collision bumper.
2. the preparation method of metalluster bumper according to claim 1 is characterized in that:
The temperature that said twin screw extruder is every section is respectively: T1=170 ℃, T2=180 ℃, T3=190 ℃, T4=205 ℃, T5=210 ℃, T6=220 ℃, the twin screw extruder rotating speed is r=350r/min.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012102710928A CN102746582A (en) | 2012-07-31 | 2012-07-31 | Method for preparing metal-luster vehicle bumpers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012102710928A CN102746582A (en) | 2012-07-31 | 2012-07-31 | Method for preparing metal-luster vehicle bumpers |
Publications (1)
Publication Number | Publication Date |
---|---|
CN102746582A true CN102746582A (en) | 2012-10-24 |
Family
ID=47027097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2012102710928A Pending CN102746582A (en) | 2012-07-31 | 2012-07-31 | Method for preparing metal-luster vehicle bumpers |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN102746582A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103556269A (en) * | 2013-10-31 | 2014-02-05 | 宜宾海丝特纤维有限责任公司 | Metallic bamboo charcoal viscose fiber and preparation method thereof |
CN103601972A (en) * | 2013-10-31 | 2014-02-26 | 天津美亚化工有限公司 | Formula for solving high tiger skin line generation tendency of aluminum powder in injection molding |
CN103910941A (en) * | 2014-04-04 | 2014-07-09 | 金发科技股份有限公司 | Spraying-free polypropylene composite with aesthetic effect, and preparation method and applications of polypropylene composite |
CN105949620A (en) * | 2016-06-02 | 2016-09-21 | 安徽众博新材料有限公司 | Method for preparing car bumper |
CN106633368A (en) * | 2016-08-31 | 2017-05-10 | 苏州万隆汽车零部件股份有限公司 | Preparation method of automobile bumper material |
CN106674724A (en) * | 2016-08-31 | 2017-05-17 | 苏州万隆汽车零部件股份有限公司 | Preparation method of automobile front bumper material |
CN106864395A (en) * | 2016-08-31 | 2017-06-20 | 苏州万隆汽车零部件股份有限公司 | A kind of manufacture method of automobile front beam material |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101781424A (en) * | 2010-04-06 | 2010-07-21 | 国家复合改性聚合物材料工程技术研究中心 | Formula of non-painted automobile bumper with metal luster and production process thereof |
CN102219959A (en) * | 2011-05-24 | 2011-10-19 | 苏州禾昌聚合材料股份有限公司 | Composite material for vehicle bumper and preparation method thereof |
-
2012
- 2012-07-31 CN CN2012102710928A patent/CN102746582A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101781424A (en) * | 2010-04-06 | 2010-07-21 | 国家复合改性聚合物材料工程技术研究中心 | Formula of non-painted automobile bumper with metal luster and production process thereof |
CN102219959A (en) * | 2011-05-24 | 2011-10-19 | 苏州禾昌聚合材料股份有限公司 | Composite material for vehicle bumper and preparation method thereof |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103556269A (en) * | 2013-10-31 | 2014-02-05 | 宜宾海丝特纤维有限责任公司 | Metallic bamboo charcoal viscose fiber and preparation method thereof |
CN103601972A (en) * | 2013-10-31 | 2014-02-26 | 天津美亚化工有限公司 | Formula for solving high tiger skin line generation tendency of aluminum powder in injection molding |
CN103556269B (en) * | 2013-10-31 | 2015-12-09 | 宜宾海丝特纤维有限责任公司 | A kind of bamboo-carbon viscose fibre with metal-like and preparation method thereof |
CN103601972B (en) * | 2013-10-31 | 2016-03-09 | 天津美亚化工有限公司 | A kind of formula solving aluminium powder easy generation tiger fur line in injection moulding |
CN103910941A (en) * | 2014-04-04 | 2014-07-09 | 金发科技股份有限公司 | Spraying-free polypropylene composite with aesthetic effect, and preparation method and applications of polypropylene composite |
CN103910941B (en) * | 2014-04-04 | 2016-08-17 | 金发科技股份有限公司 | A kind of polypropene composition exempting from spraying aesthetic effect and preparation method and application |
CN105949620A (en) * | 2016-06-02 | 2016-09-21 | 安徽众博新材料有限公司 | Method for preparing car bumper |
CN106633368A (en) * | 2016-08-31 | 2017-05-10 | 苏州万隆汽车零部件股份有限公司 | Preparation method of automobile bumper material |
CN106674724A (en) * | 2016-08-31 | 2017-05-17 | 苏州万隆汽车零部件股份有限公司 | Preparation method of automobile front bumper material |
CN106864395A (en) * | 2016-08-31 | 2017-06-20 | 苏州万隆汽车零部件股份有限公司 | A kind of manufacture method of automobile front beam material |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101781424B (en) | Formula of non-painted automobile bumper with metal luster and production process thereof | |
CN102746582A (en) | Method for preparing metal-luster vehicle bumpers | |
CN102585365B (en) | Coating-free polypropylene composition with paint brightness and metal texture and preparation method thereof | |
CN104693602A (en) | High-flowability high-glossiness no-surface-defect colored metallic-pearl-effect spraying-free polypropylene automobile material and preparation method thereof | |
CN101914243B (en) | Polypropylene composition for injection molding of automotive part with good appearance and preparation method thereof | |
CN101775178B (en) | Formula of plastic material with metallic luster and preparation method thereof | |
CN106084493A (en) | A kind of metal-like for automobile exterior trimming parts exempts from spray coating polypropylene composite and preparation method thereof | |
EP3789456B1 (en) | Polyamide resin composition having high metal texture and preparation method of polyamide resin composition | |
CN102585366B (en) | Polypropylene composition with copper-colored metal texture, and preparation method and application thereof | |
CN102086284A (en) | Polypropylene resin composition for creating fabric texture | |
CN104693603A (en) | Microcellular foaming free-spraying polypropylene material with capabilities of realizing lightweight, environmental protection and metal effect and preparation method of microcellular foaming free-spraying polypropylene material | |
CN1212720A (en) | Colored metallic paint compositions and painted objects | |
CN103205184A (en) | Polyester powder coating for preventing auto parts from being corroded and weathered | |
CN109181118A (en) | One kind exempting from basecoat paint automobile exterior material and preparation method thereof | |
CN101781422B (en) | Formula of non-painted automobile spoiler with metal luster and production process thereof | |
CN111690209A (en) | High-fluidity scratch-resistant spraying-free metallic silver modified polypropylene material for vehicles | |
CN107011614A (en) | A kind of bumper metal-like exempts from spray coating polypropylene composite and preparation method thereof | |
CN105504646A (en) | Spraying-free scratch resistant polypropylene composite material used for bumpers and preparation method thereof | |
CN103146078A (en) | High-strength plastic bumper and preparation method thereof | |
CN111363248A (en) | Spraying-free polypropylene composite material for automobile bumper decoration strip and preparation method thereof | |
US9447290B2 (en) | Powder paint composition and method for preparing same | |
CN109735001A (en) | A kind of high glaze exempts from spraying, scratch resistance polypropylene material and preparation method thereof | |
KR20130013232A (en) | Hybrid glossless clear paint composition for vehicles | |
CN111253682B (en) | Polypropylene composition and preparation method thereof | |
CN109181092A (en) | It is a kind of to exempt from spraying, the automobile-used outer plaque PP composite material with argentine effect and preparation method thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C12 | Rejection of a patent application after its publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121024 |