CN102746572A - Special modified polypropylene material for TV set rear shell and its production method - Google Patents
Special modified polypropylene material for TV set rear shell and its production method Download PDFInfo
- Publication number
- CN102746572A CN102746572A CN2011101004078A CN201110100407A CN102746572A CN 102746572 A CN102746572 A CN 102746572A CN 2011101004078 A CN2011101004078 A CN 2011101004078A CN 201110100407 A CN201110100407 A CN 201110100407A CN 102746572 A CN102746572 A CN 102746572A
- Authority
- CN
- China
- Prior art keywords
- rear shell
- pipe compound
- modified polypropene
- television rear
- calcium carbonate
- 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
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 55
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 39
- 239000000463 material Substances 0.000 title claims abstract description 16
- -1 polypropylene Polymers 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical class [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 23
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 15
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 229920006124 polyolefin elastomer Polymers 0.000 claims abstract description 8
- 239000004698 Polyethylene Substances 0.000 claims abstract description 6
- 229920000573 polyethylene Polymers 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 4
- 150000001875 compounds Chemical class 0.000 claims description 37
- 239000000843 powder Substances 0.000 claims description 20
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 18
- 238000001994 activation Methods 0.000 claims description 15
- 235000012204 lemonade/lime carbonate Nutrition 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 239000003112 inhibitor Substances 0.000 claims description 9
- 230000003647 oxidation Effects 0.000 claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims description 9
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 5
- 239000007822 coupling agent Substances 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 238000011284 combination treatment Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 229920005669 high impact polystyrene Polymers 0.000 abstract description 7
- 239000004797 high-impact polystyrene Substances 0.000 abstract description 7
- 239000003963 antioxidant agent Substances 0.000 abstract 1
- 230000003078 antioxidant effect Effects 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 235000010216 calcium carbonate Nutrition 0.000 description 16
- 230000004913 activation Effects 0.000 description 11
- 239000011257 shell material Substances 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 8
- 239000003063 flame retardant Substances 0.000 description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004595 color masterbatch Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a special modified polypropylene material for a TV set rear shell. The rear shell is composed of polyethylene, activated calcium carbonate, a polyolefin elastomer, high density polyethylene, an antioxidant, an anti-ultraviolet agent and toner. The invention is characterized in that the components of the special material satisfy the following weight proportion. A TV set shell made of the modified polypropylene instead of HIPS can have assembling performance, high-low temperature performance, mechanical performance, flame retardancy, appearance performance, and molding process performance meeting requirements, so that the special modified polypropylene material of the invention can gradually promoted for use.
Description
Technical field
The present invention relates to a kind of television rear shell PP Pipe Compound, especially relate to a kind of television rear shell modified polypropene PP Pipe Compound and working method.
Background technology
Along with development of market economy; Domestic appliance, in particular is that the competition of televisor industry increasingly sharpens; The demand that reduces cost is extremely urgent; Adopt performance to satisfy the televisor industry requirement and cheap material modified of cost, the only way that replaces tradition ABS that use, that price is higher relatively at present or HIPS to become domestic each big television manufacturer.
Vestolen PP 7052 is one of five big general-purpose plastics, and the source is abundant, and is cheap, excellent property, and processing characteristics is good, with being coated with extensively, is the most promising resin in the present whole world general-purpose plastics high performance.Yet, modified polypropene as engineering plastics particularly the TV shell material replace ABS, HIPS must solve following five big problems when using:
1. the big problem of low temperature brittleness;
2. the big problem of product shrinking percentage;
3. the insufficient problem of Vestolen PP 7052 rigidity;
4. Vestolen PP 7052 is difficult to the problem of external coating as non-polar material;
5. be difficult for realizing fire-retardant problem.
(application number: 91107202.0) disclosed a kind of modified polytrimethylene for TV case, its component is: 50～70% Vestolen PP 7052,3～15% toughner, 0.1～0.3% nucleator, 0.1～0.4% oxidation inhibitor, 0.5～3.0% composite coupler, 20～45% compounding filler reinforcing agents, 0.3～1% anti UV agent in the Chinese invention patent application.But this modified polypropene fails to solve preferably simultaneously above-mentioned five problems.
(application number: 03119614.4) disclosed television cabin with modified polypropene PP Pipe Compound and working method thereof, it consists of: 40～50 parts of Vestolen PP 7052,40～50 parts of activated calcium carbonates, 5～10 parts of polyolefine, 0.1～0.5 part of oxidation inhibitor, 0.05～0.1 part of anti UV agent, 0.5～1.0 part of toner in the Chinese invention patent application.But this modified polypropene also fails to solve simultaneously above-mentioned five kinds of problems.
Summary of the invention
The objective of the invention is deficiency, a kind of modified polypropene is provided, as the PP Pipe Compound of televisor machine back cover to prior art.
In order to solve prior art problems, the objective of the invention is to realize through following technical scheme:
Television rear shell of the present invention is used the modified polypropene PP Pipe Compound, is made up of Vilaterm, treated carbonates, polyolefin elastomer, high density polyethylene(HDPE), oxidation inhibitor, anti UV agent and toner, it is characterized in that, the component of said PP Pipe Compound is by weight ratio:
In the above-mentioned PP Pipe Compound, said Vestolen PP 7052 is a polypropylene powder.
In the above-mentioned PP Pipe Compound, said treated carbonates is a calcium carbonate superfine powder.
In the above-mentioned PP Pipe Compound, the set of dispense of said activated calcium carbonate than by weight percentage is:
By the working method of above-mentioned television rear shell with the modified polypropene PP Pipe Compound, it comprises the steps:
A) lime carbonate, talcum powder and acvator are pressed batching, mixed at high speed is even, carries out surface activation process;
B) Vestolen PP 7052, polyolefin elastomer, high density polyethylene(HDPE) are pressed batching, low speed mixing is even;
C) with above-mentioned steps (a) and (b) item gained material, add toner, oxidation inhibitor and the anti UV agent of metering again, low speed mixing is even;
D) melt extrude granulation.
In the above-mentioned working method, said step (a) lime carbonate surface activation process process is: the lime carbonate with 80～85%, 2～7% talcum powder and 3% titanate coupling agent, 10% polyethylene wax are at 110 ℃/1200r.min
～1Combination treatment 13min under the condition.
Make lime carbonate coated with uniform layer of polyethylene resin, so that increase the avidity of lime carbonate and organic resin.
A kind of television rear shell of the present invention has the following advantages with the modified polypropene PP Pipe Compound compared with prior art:
1. adopt polymer/inorganic thing composite system,, make the cost of PP Pipe Compound descend significantly through in Vestolen PP 7052, filling a large amount of cheap lime carbonate.By HIPS per ton about 9500 yuan with ABS reduce to about 7000 yuan per ton of PP Pipe Compound for about 11000 yuan per ton; For 3.4 yuan of 21 o'clock each about ranges of decrease of colour TV back cover material cost (2.2Kg * 9.83 yuan/Kg-2.6Kg * 7 yuan/Kg=3.43 unit); Will be bigger for 29 o'clock and 34 o'clock colour TV ranges of decrease, economic benefit is very significantly.
2. the modified polypropene PP Pipe Compound has woodiness touch, and is better than HIPS or ABS for the televisor sound effects.
3. through in Vestolen PP 7052/calcium carbonate composite material system, adding toughened resin; And lime carbonate process for treating surface; Elastic body toughening Vestolen PP 7052 and inorganic rigid particle tenacity-increased profax are organically combined; Make the toughness of polypropylene dedicated material increase substantially, its toughness surpasses HIPS, and shock strength improves more than 30%.
4. the modified polypropene PP Pipe Compound belongs to deflagration level material, surpasses Konka's company technique combustion time and requires 50 seconds, and flame retardant rating can not produce black smoke considerably beyond the HB level in the combustion processes.
5. the modified polypropene PP Pipe Compound has the color that televisor producer requires, and need not in TV shell production, to add colour batch and flame-retardant color master batch material again, can further enhance productivity and reduce cost.
6. the injection molding technique property of modified polypropene PP Pipe Compound is good, and available existing television cabin mould and injector are carried out the production of TV shell, need not more mold exchange.
7. modified polypropene PP Pipe Compound life-time service TR is: 23 ℃～40 ℃, satisfy the televisor industry requirement.
8. the modified polypropene PP Pipe Compound is nontoxic, and is environmentally friendly.
9. the modified polypropene PP Pipe Compound is a thermoplastic macromolecule material, can recycling, meet the national environmental protection policy.
Originally it is as shown in the table to change part polypropylene dedicated material the key technical indexes:
Embodiment
Below in conjunction with embodiment, further specify the present invention.
Embodiment 1
The polyethylene wax of titanate coupling agent, 8Kg of talcum powder and 2Kg of calcium carbonate superfine powder, 1Kg of getting 89Kg is at 110 ℃/1200r.min
～1Condition under mixed at high speed handle 15min, make the activation calcium carbonate superfine powder.
Get the Vestolen PP 7052 of 40Kg, the polyolefin elastomer of 5Kg, the high density polyethylene(HDPE) of 10Kg; With the 100r/min low speed mixing evenly after; Again with above-mentioned activated calcium carbonate 50Kg; And the anti UV agent of the toner of 1.0Kg, 0.1Kg oxidation inhibitor and 0.05Kg, after mixing with 100r/min speed, Yi Yi district to seven district temperature is that 240 ℃～245 ℃～250 ℃～255 ℃～255 ℃～240 ℃～200 ℃ condition melt extrudes, granulation on forcing machine; Wherein die head temperature is 200 ℃, and rate of feeding is 70r/min, and extruded velocity is 50r/min, makes the television cabin PP Pipe Compound.
Embodiment 2
The preparation of activated calcium carbonate is identical with embodiment 1.
Get the polypropylene powder of 50Kg, the polyolefin elastomer of 10Kg, the high density polyethylene(HDPE) of 5Kg; After mixing with 100r/min speed, again with above-mentioned activation calcium carbonate superfine powder 40Kg, and the toner of 0.5Kg, the oxidation inhibitor of 0.5Kg and the anti UV agent of 0.1Kg; After low speed mixing is even; On forcing machine, melt extrude, granulation, extruded velocity is 60r/min, makes the television cabin PP Pipe Compound.
Embodiment 3
The preparation of activated calcium carbonate is identical with embodiment 1.
Get the polypropylene powder of 42Kg, the polyolefin elastomer of 6Kg, the high density polyethylene(HDPE) of 7Kg; After low speed mixing is even, again with above-mentioned activation calcium carbonate superfine powder 44Kg, and the toner of 0.8Kg, the oxidation inhibitor of 0.3Kg and the anti UV agent of 0.07Kg; After low speed mixing is even; On forcing machine, melt extrude, granulation, extruded velocity is 58r/min, makes the television cabin PP Pipe Compound.
Embodiment 4
Identical with embodiment 1, but the activation calcium carbonate superfine powder is by following method preparation.
The polyethylene wax of titanate coupling agent, 8Kg of talcum powder and 2Kg of calcium carbonate superfine powder, 5Kg of getting 85Kg is at 110 ℃/1200r.min
～1Condition under mixed at high speed handle 15min, make the activation calcium carbonate superfine powder.
Embodiment 5
Identical with embodiment 2, but the activation calcium carbonate superfine powder is pressed the method preparation among the embodiment 4.
Embodiment 6
Identical with embodiment 3, but the activation calcium carbonate superfine powder is pressed the method preparation among the embodiment 4.
Embodiment 7
Identical with embodiment 1, but the activation calcium carbonate superfine powder is by following method preparation.
The polyethylene wax of titanate coupling agent, 8Kg of talcum powder and 2Kg of calcium carbonate superfine powder, 2Kg of getting 88Kg is at 110 ℃/1200r.min
～1Condition under mixed at high speed handle 15min, make the activation calcium carbonate superfine powder.
Embodiment 8
Identical with embodiment 2, but the activation calcium carbonate superfine powder is pressed the method preparation among the embodiment 7.
Embodiment 9
Same with embodiment 3, but the activation calcium carbonate superfine powder is pressed the method preparation among the embodiment 7.
Television cabin is successively tried out in the product such as colour TV front and rear casing when colour TV front and rear casing, Konka 29 when colour TV front and rear casing, Konka 25 when colour TV back cover, Konka 21 when the TCL 21 with the modified polypropene PP Pipe Compound.The result shows that the TV shell assembly performance, high temperature performance, mechanical property, flame retardant properties, appearance property, the building-up properties that replace HIPS to make by modified polypropene meet the demands, and can promote the use of gradually.
Must be pointed out that some indefinitenesses that the foregoing description is just made the present invention illustrate.But person of skill in the art will appreciate that, do not departing under aim of the present invention and the scope that can make modification, replacement and change to the present invention, these modifications, replacement and change still belong to protection scope of the present invention.
Claims (10)
1. a television rear shell is used the modified polypropene PP Pipe Compound; Be made up of Vilaterm, treated carbonates, polyolefin elastomer, high density polyethylene(HDPE), oxidation inhibitor, anti UV agent and toner, it is characterized in that: each component of said PP Pipe Compound is respectively by weight ratio:
2. television rear shell according to claim 1 is used the modified polypropene PP Pipe Compound, it is characterized in that, said Vestolen PP 7052 is a Vestolen PP 7052 material grain.
3. television rear shell according to claim 1 is used the modified polypropene PP Pipe Compound, it is characterized in that, said treated carbonates is a calcium carbonate superfine powder.
4. use the modified polypropene PP Pipe Compound according to the described television rear shell of arbitrary claim in the claim 1 to 3, it is characterized in that: the set of dispense of said activated calcium carbonate than by weight percentage is:
5. a television rear shell is characterized in that with the working method of modified polypropene PP Pipe Compound:
Said television rear shell is respectively with each composition of modified polypropene PP Pipe Compound by weight ratio:
6. television rear shell according to claim 5 is characterized in that with the working method of modified polypropene PP Pipe Compound said Vestolen PP 7052 is a Vestolen PP 7052 material grain.
7. television rear shell according to claim 5 is characterized in that with the working method of modified polypropene PP Pipe Compound said treated carbonates is a calcium carbonate superfine powder.
8. it is characterized in that with the working method of modified polypropene PP Pipe Compound according to the described television rear shell of arbitrary claim in the claim 5 to 7: the set of dispense of said activated calcium carbonate than by weight percentage is:
9. television rear shell according to claim 8 is characterized in that with the working method of modified polypropene PP Pipe Compound:
Its step is following:
A) lime carbonate, talcum powder and acvator are pressed batching, mixed at high speed is even, carries out surface activation process;
B) Vestolen PP 7052, polyolefin elastomer, high density polyethylene(HDPE) are pressed batching, low speed mixing is even;
C) with above-mentioned steps (a) and (b) item gained material, add toner, oxidation inhibitor and the anti UV agent of metering again, low speed mixing is even;
D) melt extrude granulation.
10. television rear shell according to claim 8 is characterized in that with the working method of modified polypropene PP Pipe Compound:
Said step (a) lime carbonate surface activation process process is: the lime carbonate with 85～89%, 1～5% talcum powder and 2% titanate coupling agent, 8% polyethylene wax are at 110 ℃/1200r.min
～1Combination treatment 15min under the condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101004078A CN102746572A (en) | 2011-04-21 | 2011-04-21 | Special modified polypropylene material for TV set rear shell and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101004078A CN102746572A (en) | 2011-04-21 | 2011-04-21 | Special modified polypropylene material for TV set rear shell and its production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102746572A true CN102746572A (en) | 2012-10-24 |
Family
ID=47027087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101004078A Pending CN102746572A (en) | 2011-04-21 | 2011-04-21 | Special modified polypropylene material for TV set rear shell and its production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102746572A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104861295A (en) * | 2015-05-15 | 2015-08-26 | 江汉大学 | Preparation method of modified PP (polypropylene) material with improved shock resistance |
| CN106243496A (en) * | 2016-08-03 | 2016-12-21 | 安庆市悦发管业有限公司 | A kind of plum tube toughening type masterbatch and preparation method |
| CN110253806A (en) * | 2018-03-12 | 2019-09-20 | 洛阳双瑞橡塑科技有限公司 | A kind of Plastic sleeper and preparation method thereof |
-
2011
- 2011-04-21 CN CN2011101004078A patent/CN102746572A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104861295A (en) * | 2015-05-15 | 2015-08-26 | 江汉大学 | Preparation method of modified PP (polypropylene) material with improved shock resistance |
| CN104861295B (en) * | 2015-05-15 | 2017-11-10 | 江汉大学 | A kind of preparation method for the modified polypropylene material for improving impact strength |
| CN106243496A (en) * | 2016-08-03 | 2016-12-21 | 安庆市悦发管业有限公司 | A kind of plum tube toughening type masterbatch and preparation method |
| CN110253806A (en) * | 2018-03-12 | 2019-09-20 | 洛阳双瑞橡塑科技有限公司 | A kind of Plastic sleeper and preparation method thereof |
| CN110253806B (en) * | 2018-03-12 | 2021-10-08 | 洛阳双瑞橡塑科技有限公司 | Plastic sleeper and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102321363B (en) | Ceramic-imitated plastic composite material and preparation method thereof | |
| CN102250413B (en) | Modified polypropylene composite material of high gloss and low shrinkage and preparation method thereof | |
| CN103333453B (en) | A kind of high shading ABS composite material and preparation method thereof | |
| CN101921475B (en) | Metal-like engineering plastic composite material and preparation method thereof | |
| CN101250303A (en) | Mineral/whisker reinforced polypropylene composite material having good spraying property | |
| CN103665540A (en) | Delustering polypropylene composite material and preparation method thereof | |
| CN101555356B (en) | Carbonized environment-friendly type sheet synthesized by waste PCB powder and resin fiber | |
| CN101831112A (en) | Halogen-free flame-retardant type injection molding-class polyolefin wood plastic composite material and preparation method thereof | |
| CN102382374A (en) | Fiber reinforced polypropylene (PP) automobile interior decoration material and preparation method thereof | |
| CN101602874B (en) | A kind of preparation method of waste rubber powder and polystyrene blend material | |
| CN104995262A (en) | Resin composition for high dielectric constant materials, molded article containing same, and master batch for coloring | |
| CN109135061B (en) | Marble-imitated tooth brush handle and preparation method thereof | |
| CN103602088A (en) | Polyethylene wood plastic composite material | |
| CN105542270A (en) | Method for reinforcing waste polyolefin plastic with waste printed circuit board nonmetal powder | |
| CN104742465B (en) | Scratch-resistant co-extruded plastic-wood profile and preparation method thereof | |
| CN103483659B (en) | Waste-rubber-base polyolefin thermoplastic elastomer material and preparation method thereof | |
| CN102746572A (en) | Special modified polypropylene material for TV set rear shell and its production method | |
| CN102850611A (en) | Preparation method of anti-slip sole material | |
| CN113999575A (en) | Regenerated polypropylene spraying material and preparation method thereof | |
| CN103289352A (en) | Highlight antiflaming polyphenyl ether alloy material and television front shell comprising same | |
| CN1208386C (en) | Specific meterial for modified polypropylene TV housing and production method thereof | |
| CN104448554A (en) | Highlight high-flexibility polypropylene environment-friendly flame retardant material and preparation method thereof | |
| CN104693597A (en) | High-temperature-resistant and low-shrinkage polyarylester fiber master batch/polypropylene composite material and preparation method thereof | |
| CN115160688B (en) | Flame-retardant polypropylene composite material for battery pack upper cover of new energy automobile and preparation method thereof | |
| CN104059371A (en) | Thermoplastic resin wood-plastic composite artificial board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121024 |