CN102020806A - Stress and whitening-resistant filled/modified polypropylene and preparation method thereof - Google Patents
Stress and whitening-resistant filled/modified polypropylene and preparation method thereof Download PDFInfo
- Publication number
- CN102020806A CN102020806A CN2010105500053A CN201010550005A CN102020806A CN 102020806 A CN102020806 A CN 102020806A CN 2010105500053 A CN2010105500053 A CN 2010105500053A CN 201010550005 A CN201010550005 A CN 201010550005A CN 102020806 A CN102020806 A CN 102020806A
- Authority
- CN
- China
- Prior art keywords
- modified polypropylene
- stress whitening
- filled modified
- parts
- stress
- 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
- B29C48/92—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)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention belongs to the field of polypropylene compound materials, and relates to a stress and whitening-resistant filled/modified polypropylene. The stress and whitening-resistant filled/ modified polypropylene comprises the following compositions in parts by weight: 50 to 80 parts of PP, 5 to 25 parts of toughening agent, 10 to 25 parts of minerals, 1 to 5 parts of compatibilizer, 0.1 to 1 part of dispersant; 0.1 to 1 part of antioxygen, and 0.1 to 1 part of light stabilizer, wherein sum of the weight parts of the PP, the toughening agent, the mineral and the compatibilizer is 100. The prepared polypropylene compound material in the invention both has a good stress and whitening-resistant performance and an excellent comprehensive mechanical property. The preparation method in the invention is simple and easy to operate without special processing methods, and can be promoted and applied in large scale.
Description
Technical field
The invention belongs to the polymer composite field, be specifically related to a kind of filled modified polypropylene of anti-stress whitening; The present invention also relates to the preparation method of the filled modified polypropylene of described anti-stress whitening simultaneously.
Background technology
Modified polypropylene composite material has the advantage recyclable, in light weight, that cost is low because of it, thereby is applied to automobile and other field more and more.But the raising day by day along with the modifying plastics state of the art has also proposed increasing performance requriements to material.
When modified polypropene is used for injecting products and when the assembling of zero device, at the push rod place or assembling place easily produce blushing, thereby influence outward appearance even cause product defective.Therefore, " on the basis that guarantees the material over-all properties, how solving the problem of stress whitening? " is born in new requirement at this point
Stress whitening is that material is under stress and produce a large amount of tiny crack accumulation area (according to stress whitening degree size and generation area, crazing, crackle and the micropore that may comprise some amount), owing to this regional refractive index reduces a kind of phenomenon that is white in color.That is to say that stress whitening is the result who produces tiny crack, micropore or crazingization.
Summary of the invention
The purpose of this invention is to provide filled modified polypropylene of a kind of anti-stress whitening and preparation method thereof.
For achieving the above object, the technical solution used in the present invention is: a kind of filled modified polypropylene of anti-stress whitening comprises PP, toughner, mineral, compatilizer, dispersion agent, oxidation inhibitor, photostabilizer.
Preferably, the weight part of above-mentioned composition is respectively:
50～80 parts of PP;
5～25 parts of toughner;
10～25 parts of mineral;
1～5 part of compatilizer;
0.1～1 part of dispersion agent;
0.1～1 part in oxidation inhibitor;
0.1～1 part of photostabilizer;
Wherein, the weight part sum of PP, toughner, mineral and compatilizer is 100 parts.
Particularly:
Described PP is selected from a kind of homo-polypropylene, and molecular weight ranges is 30～400,000.
Described toughner selects a kind of semi-crystalline co-polymers of the uniqueness that is formed by propylene and vinyl polymerization, and therein ethylene content is 5%～30%.
Described mineral are selected from a kind of superfine talcum powder, and its particle diameter 90% is distributed in 0.5 μ m～2 mu m ranges.
Described compatilizer is selected from the grafts (PP-g-MAH) of a kind of polypropylene and maleic anhydride.
Described dispersion agent is selected from a kind of based on the ethylene bis-fatty acid amides, introduces the highly-efficient lubricant of anchoring group.
Described oxidation inhibitor is selected from: antioxidant 1010, the mixture of oxidation inhibitor 168.
Be for the CAS of antioxidant 1010 number: 6683-19-8, molecular formula is: C
73H
108O
12, chemistry is by name: four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester;
Be for the CAS of oxidation inhibitor No. 168: 31570-04-4, molecular formula is: C
42H
63O
3P, chemistry is by name: tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester;
Described photostabilizer is selected from: photostabilizer 944, the mixture of UV-2908.
Be for the CAS of photostabilizer No. 944: 70624-18-9, molecular formula is: (C
35H
66N
8) n=
4-5, chemistry is by name: poly-[6-[(1,1,3,3-tetramethyl butyl) amino]]-1,3,5-triazines-2,4-[(2,2,6,6 ,-tetramethyl-4-piperidyl) imino-]-1, oneself two supports [(2,2,6,6-tetramethyl--4-piperidyl) imino-] of 6-}.
Be for the CAS of photostabilizer UV-2908 number: 67845-93-63, molecular formula is: C
31H
54O
3, chemistry is by name: 5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester.
The preparation method of the filled modified polypropylene of above-mentioned anti-stress whitening may further comprise the steps:
(1) takes by weighing raw material by the described weight proportion of claim 1;
(2) with PP, toughner and compatilizer 1000～2000 rev/mins of following high-speed mixing 1～5 minute; Add dispersion agent, oxidation inhibitor, photostabilizer then, 1000～2000 rev/mins of following high-speed mixing 1～5 minute; Add mineral at last, obtained Preblend in 1～5 minute 1000～2000 rev/mins of following high-speed mixing;
(3) Preblend is fed in the twin screw extruder, preheat 3～5 minutes, wherein the temperature in each district of screw rod is 200～240 ℃, and screw speed is 200～500 rev/mins, and extruding pelletization can make the filled modified polypropylene of anti-stress whitening.
Because the technique scheme utilization, the present invention compared with prior art has following advantage:
Selected toughner is a kind of unbodied ethylene, propylene structure (ethylene content is 5%～30%), have higher propylene regularity, have better consistency and exist finely disseminated isotatic polypropylene crystallite form when polypropene blended at its periphery.This structure can absorb extraneous impact energy better when being subjected to external impacts, improve the phenomenon of stress whitening.
Moreover, in blend, add dispersion agent, mineral are dispersed in the matrix uniformly and stably, when being subjected to external influence power, be difficult for producing stress concentration, thereby avoid the phenomenon of stress whitening.
Below will the invention will be further described by specific embodiment, because the present invention mainly is the improvement of filling a prescription, other processing condition, basic identical as the operational condition of screw rod etc. with prior art, so embodiment enumerating of will paying attention to filling a prescription.
In an embodiment, the testing method of each rerum natura is as follows respectively:
Tensile strength is measured according to DIN ISO 527;
Modulus in flexure is measured according to DIN ISO 178;
Notched Izod impact strength is measured according to DIN ISO 179-1eA;
The stress whitening phenomenon is measured according to PV3966.
Embodiment
For being expressly understood technology contents of the present invention, the present invention is further described below in conjunction with embodiment:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| PP | 70 | 67 | 64 | 61 |
| Toughner | 7 | 10 | 13 | 16 |
| Mineral | 20 | 20 | 20 | 20 |
| Compatilizer | 3 | 3 | 3 | 3 |
| Dispersion agent | 0.5 | 0.5 | 0.5 | 0.5 |
| Oxidation inhibitor | 0.4 | 0.4 | 0.4 | 0.4 |
| Photostabilizer | 0.2 | 0.2 | 0.2 | 0.2 |
Earlier with PP, toughner and compatilizer 1400 rev/mins of following high-speed mixing 2 minutes; Add dispersion agent, oxidation inhibitor, photostabilizer then, 1400 rev/mins of following high-speed mixing 2 minutes; Add mineral at last, obtained Preblend in 3 minutes 1500 rev/mins of following high-speed mixing; Through the twin screw extruder extruding pelletization, can make the filled modified polypropylene of anti-stress whitening then.To survey performance as shown in the table.
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| Yield strength/MPa | 31 | 27 | 22 | 19 |
| Modulus in flexure/MPa | 2200 | 1900 | 1600 | 1100 |
| Notch shock/(kJ/m 2) | 15 | 20 | 25 | 32 |
| The stress whitening phenomenon | Obviously | Slightly | Do not have | Do not have |
In sum, the filled modified polypropylene of the prepared anti-stress whitening of the present invention when solving the stress whitening phenomenon, also has the favorable mechanical performance.
These embodiment only are used to the present invention is described and should not limit the scope of this invention.In addition, after having read content of the present invention, those skilled in the art make the change or the modification of the various equivalent form of values to the present invention, and these equivalent form of values belong to claims institute restricted portion of the application equally.
Claims (9)
1. the filled modified polypropylene of an anti-stress whitening, comprising: PP, toughner, mineral, compatilizer, dispersion agent, oxidation inhibitor, photostabilizer is characterized in that according to weight part, the weight part of above-mentioned composition is respectively:
50～80 parts of PP;
5～20 parts of toughner;
10～25 parts of mineral;
1～5 part of compatilizer;
0.1～1 part of dispersion agent;
0.1～1 part in oxidation inhibitor;
0.1～1 part of photostabilizer;
Wherein, the weight part sum of PP, LDPE, toughner and compatilizer is 100 parts.
2. the filled modified polypropylene of anti-stress whitening according to claim 1, it is characterized in that: described PP is selected from a kind of homo-polypropylene, and molecular weight ranges is 30～400,000.
3. the filled modified polypropylene of anti-stress whitening according to claim 1 is characterized in that: described toughner is selected from a kind of semi-crystalline co-polymers of the uniqueness that is formed by propylene and vinyl polymerization, and therein ethylene content is that ethylene content is 5%～30%.
4. the filled modified polypropylene of anti-stress whitening according to claim 1, it is characterized in that: described mineral are selected from a kind of superfine talcum powder, and its particle diameter 90% is distributed in 0.5 μ m～2 mu m ranges.
5. the filled modified polypropylene of anti-stress whitening according to claim 1, it is characterized in that: described compatilizer is selected from the grafts (PP-g-MAH) of a kind of polypropylene and maleic anhydride.
6. the filled modified polypropylene of anti-stress whitening according to claim 1, it is characterized in that: described dispersion agent is selected from a kind of based on the ethylene bis-fatty acid amides, introduces the highly-efficient lubricant of anchoring group.
7. the filled modified polypropylene of anti-stress whitening according to claim 1, it is characterized in that: described oxidation inhibitor is selected from antioxidant 1010, the mixture of oxidation inhibitor 168.
8. the filled modified polypropylene of anti-stress whitening according to claim 1, it is characterized in that: described photostabilizer is selected from photostabilizer 944, the mixture of UV-2908.
9. the preparation method of the filled modified polypropylene of an anti-stress whitening is characterized in that: may further comprise the steps:
(1) takes by weighing raw material by the described weight proportion of claim 1;
(2) with PP, toughner and compatilizer 1000～2000 rev/mins of following high-speed mixing 1～5 minute; Add dispersion agent, oxidation inhibitor, photostabilizer then, 1000～2000 rev/mins of following high-speed mixing 1～5 minute; Add mineral at last, obtained Preblend in 1～5 minute 1000～2000 rev/mins of following high-speed mixing;
(3) Preblend is fed in the twin screw extruder, preheat 3～5 minutes, wherein the temperature in each district of screw rod is 200～240 ℃, and screw speed is 200～500 rev/mins, and extruding pelletization can make the filled modified polypropylene of anti-stress whitening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105500053A CN102020806A (en) | 2010-11-19 | 2010-11-19 | Stress and whitening-resistant filled/modified polypropylene and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105500053A CN102020806A (en) | 2010-11-19 | 2010-11-19 | Stress and whitening-resistant filled/modified polypropylene and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102020806A true CN102020806A (en) | 2011-04-20 |
Family
ID=43862612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105500053A Pending CN102020806A (en) | 2010-11-19 | 2010-11-19 | Stress and whitening-resistant filled/modified polypropylene and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102020806A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234397A (en) * | 2011-05-10 | 2011-11-09 | 深圳市兴迪塑胶有限公司 | Polypropylene composition for indoor communication cabinet |
| CN102644158A (en) * | 2012-04-01 | 2012-08-22 | 宁波山泉建材有限公司 | Polyolefin mesh fabric, preparation method and application thereof |
| CN102850660A (en) * | 2011-06-30 | 2013-01-02 | 中国石油天然气股份有限公司 | Method for improving impact-resistant co-polypropylene stress whitening phenomena |
| CN103113662A (en) * | 2011-11-17 | 2013-05-22 | 上海金发科技发展有限公司 | Low-odor ultrahigh-toughness polypropylene compound and preparation method thereof |
| CN103131112A (en) * | 2011-11-23 | 2013-06-05 | 合肥杰事杰新材料股份有限公司 | Low-stress whitening polypropylene composition and preparation method thereof |
| CN103160028A (en) * | 2011-12-08 | 2013-06-19 | 合肥杰事杰新材料股份有限公司 | Modified polypropylene material, preparation method and applications thereof |
| CN104059286A (en) * | 2013-03-22 | 2014-09-24 | 上海金发科技发展有限公司 | Polypropylene compound for automobile fender and preparation method thereof |
| CN105297537A (en) * | 2015-09-11 | 2016-02-03 | 句容市兴武包装有限公司 | Stress whitening-resisting packaging box and preparation method thereof |
| CN103131112B (en) * | 2011-11-23 | 2016-12-14 | 合肥杰事杰新材料股份有限公司 | A kind of low stress turns white polypropene composition and preparation method thereof |
| CN106810768A (en) * | 2017-01-22 | 2017-06-09 | 合肥华凌股份有限公司 | Refrigerator, inner container of icebox, PP composite material and preparation method thereof |
| CN109942950A (en) * | 2019-04-03 | 2019-06-28 | 金旸（厦门）新材料科技有限公司 | A kind of resistance to stress whitens, mar-proof automobile-used PP/PETG alloy material and preparation method thereof |
| CN112724502A (en) * | 2020-12-31 | 2021-04-30 | 常州威材新材料科技有限公司 | Anti-blushing auxiliary agent and application method thereof |
| CN114716770A (en) * | 2022-05-24 | 2022-07-08 | 苏州旭光聚合物有限公司 | Mineral modified polypropylene composite material for vehicles and preparation method thereof |
-
2010
- 2010-11-19 CN CN2010105500053A patent/CN102020806A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234397A (en) * | 2011-05-10 | 2011-11-09 | 深圳市兴迪塑胶有限公司 | Polypropylene composition for indoor communication cabinet |
| CN102234397B (en) * | 2011-05-10 | 2013-12-25 | 深圳市兴盛迪新材料有限公司 | Polypropylene composition for indoor communication cabinet |
| CN102850660A (en) * | 2011-06-30 | 2013-01-02 | 中国石油天然气股份有限公司 | Method for improving impact-resistant co-polypropylene stress whitening phenomena |
| CN102850660B (en) * | 2011-06-30 | 2014-06-04 | 中国石油天然气股份有限公司 | Method for improving impact-resistant co-polypropylene stress whitening phenomena |
| CN103113662A (en) * | 2011-11-17 | 2013-05-22 | 上海金发科技发展有限公司 | Low-odor ultrahigh-toughness polypropylene compound and preparation method thereof |
| CN103131112B (en) * | 2011-11-23 | 2016-12-14 | 合肥杰事杰新材料股份有限公司 | A kind of low stress turns white polypropene composition and preparation method thereof |
| CN103131112A (en) * | 2011-11-23 | 2013-06-05 | 合肥杰事杰新材料股份有限公司 | Low-stress whitening polypropylene composition and preparation method thereof |
| CN103160028A (en) * | 2011-12-08 | 2013-06-19 | 合肥杰事杰新材料股份有限公司 | Modified polypropylene material, preparation method and applications thereof |
| CN102644158B (en) * | 2012-04-01 | 2014-06-11 | 宁波山泉建材有限公司 | Polyolefin mesh fabric, preparation method and application thereof |
| CN102644158A (en) * | 2012-04-01 | 2012-08-22 | 宁波山泉建材有限公司 | Polyolefin mesh fabric, preparation method and application thereof |
| CN104059286A (en) * | 2013-03-22 | 2014-09-24 | 上海金发科技发展有限公司 | Polypropylene compound for automobile fender and preparation method thereof |
| CN105297537A (en) * | 2015-09-11 | 2016-02-03 | 句容市兴武包装有限公司 | Stress whitening-resisting packaging box and preparation method thereof |
| CN106810768A (en) * | 2017-01-22 | 2017-06-09 | 合肥华凌股份有限公司 | Refrigerator, inner container of icebox, PP composite material and preparation method thereof |
| CN109942950A (en) * | 2019-04-03 | 2019-06-28 | 金旸（厦门）新材料科技有限公司 | A kind of resistance to stress whitens, mar-proof automobile-used PP/PETG alloy material and preparation method thereof |
| CN109942950B (en) * | 2019-04-03 | 2021-05-11 | 金旸（厦门）新材料科技有限公司 | Stress whitening-resistant scratch-resistant PP/PETG alloy material for vehicles and preparation method thereof |
| CN112724502A (en) * | 2020-12-31 | 2021-04-30 | 常州威材新材料科技有限公司 | Anti-blushing auxiliary agent and application method thereof |
| CN112724502B (en) * | 2020-12-31 | 2021-09-07 | 常州威材新材料科技有限公司 | Anti-blushing auxiliary agent and application method thereof |
| CN114716770A (en) * | 2022-05-24 | 2022-07-08 | 苏州旭光聚合物有限公司 | Mineral modified polypropylene composite material for vehicles and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102020806A (en) | Stress and whitening-resistant filled/modified polypropylene and preparation method thereof | |
| CN101195707B (en) | Glass fiber-reinforced nylon 6-polypropylene alloy material | |
| CN101759920B (en) | Polypropylene composite material with improved scraping and wiping resistance performance and preparation method thereof | |
| CN101759913A (en) | Novel scratch-proof polypropylene material and preparation method thereof | |
| CN101698726A (en) | Scratch-resistant modified polypropylene composite material and preparation method thereof | |
| CN101759922B (en) | Light aging resistant polypropylene composition and preparation method thereof | |
| CN102746629B (en) | Degradable masterbatch and preparation method thereof | |
| CN103030972A (en) | High heat resistance and low warping nylon 66 composite and preparation method thereof | |
| CN101948617A (en) | Glass fiber/mineral composite reinforced modified nylon-6 material and preparation method thereof | |
| CN101870823A (en) | Completely biodegradable material filling master batch and preparation method thereof | |
| CN101759919A (en) | Low-luster polypropylene composite material and preparation method thereof | |
| CN102516662B (en) | Polypropylene composite material with high strength and high heat resistance and its preparation method | |
| CN108276682A (en) | A kind of high fluidity polypropylene composite material with high strength and toughness and preparation method thereof | |
| CN102181093A (en) | Anti-scratching polypropylene composite material and preparation method thereof | |
| CN102558678A (en) | High-transparency high-modulus and impact-resistant modified polypropylene material and preparation method thereof | |
| CN101759911A (en) | Polypropylene composite material with excellent rigid-tough balance and preparation method thereof | |
| CN102040829B (en) | Glass fiber reinforced nylon material for high-speed railway system and preparation method thereof | |
| CN101230167A (en) | Partially-degrable PP/straw powder compound and preparation method thereof | |
| CN103131149B (en) | Polylactic acid composite material, preparation method thereof and application thereof | |
| CN102532686A (en) | Low-gloss and scratch-resistant polypropylene material and preparation method thereof | |
| CN102702612A (en) | High-flow precipitation-resistant halogen-free flame-retardant polypropylene composite material and preparation method thereof | |
| CN110669320A (en) | Preparation method of high-impact-resistance high-low-temperature-resistance poly (p-xylylene glycol terephthalate) | |
| CN105647001A (en) | Low-glossiness modified polypropylene material and preparation method therefor | |
| CN103304886A (en) | Talcum powder master batch and preparation method thereof | |
| CN103073790A (en) | Polypropylene composite material resistant to surface friction damage 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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110420 |