CN102010546A - Long glass fibre reinforced polypropylene material and preparation method thereof - Google Patents
Long glass fibre reinforced polypropylene material and preparation method thereof Download PDFInfo
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- CN102010546A CN102010546A CN2010106022311A CN201010602231A CN102010546A CN 102010546 A CN102010546 A CN 102010546A CN 2010106022311 A CN2010106022311 A CN 2010106022311A CN 201010602231 A CN201010602231 A CN 201010602231A CN 102010546 A CN102010546 A CN 102010546A
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- 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
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- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Reinforced Plastic Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to field of a polymer material and shaping thereof, in particular to a long glass fiber reinforced polypropylene material and a preparation method thereof. The long glass fiber reinforced polypropylene material is prepared from the following components: 35-68wt% of polypropylene, 30-60wt% of long glass fiber, 1-5wt% of compatilizer and 0.3-1.0wt% of antioxidant, wherein the polypropylene is polypropylene with a melt index as high as 50-500g/10min. The preparation method comprises the following steps: mixing the polypropylene, the compatilizer and the antioxidant; feeding the mixture in a double-screw extruder; enabling the long glass fiber to be fully soaked by melts through a soaking die; and cooling, drawing and pelletizing the fully soaked long glass fiber to obtain the long glass fiber reinforced polypropylene material. By the invention, the soaking effect of the glass fiber in polypropylene melts can be reinforced, substances harmful to human bodies can be eliminated or reduced, the odor is lightened, and the soaking effect and mechanical property of the material can be effectively improved.
Description
Technical field
The invention belongs to macromolecular material and forming process field thereof, relate to a kind of long glass fiber reinforced polypropylene material and preparation method thereof.
Background technology
In the manufacturing processed of staple fibre reinforced thermoplastics(RTP), with resin when mixing, because the shearing between screw rod and the machine barrel, fiber can sustain damage fiber in forcing machine, originally be the fiber of 6mm, the length in pellet becomes 0.2-1mm (generally below 0.7mm).Because the performance of reinforced plastics is relevant with staple length, so fiber in short-term, is difficult to structural applications.Glass fibre length in the long glass fiber reinforced polypropylene material is longer, and fiber length distribution is better, can improve the mechanical property of goods, and particularly shock strength improves significantly, and rigidity increases, and helps the application on structural part.
The principal element that influences the long glass fiber reinforced polypropylene material material physical property has two kinds: 1, polypropylene is a non-polar molecule, and is relatively poor with the interface cohesive force of glass fibre, improves its interface cohesive force its performance is had a significant impact; 2, the flowability of resin melt, promptly polyacrylic melting index (MFR).
In the long glass fiber reinforced polypropylene material preparation process, because dipping time is longer, resin melt residence time in forcing machine and mould is longer, needs to add excessive oxidation inhibitor and protects.All there are some defectives in the patent of present disclosed long glass fiber reinforced polypropylene material, for example application number is 200610033859.8, patent name is " a kind of long glass fiber reinforced polypropylene material and preparation method thereof ", publication number is in 1810870 the patent, in the material formula of preparation long glass fiber-reinforced polypropylene, unsaturated carboxylic acid or its acid anhydrides have directly been used, main purpose is to make the acrylic resin degraded, improve mobile, simultaneously acrylic resin is carried out grafting, improve the interface binding power of glass fibre and acrylic resin melt.Yet in the material produce process, this class material has unpleasant irritating smell, not only endangers HUMAN HEALTH, contaminate environment, and corrosion processing equipment, reduces the work-ing life of equipment; In the product molding course of processing since this class material residual also can corrosion processing equipment, pollute production environment, the downstream client makes us being difficult to accepting.Application number is 200810020936.5 for another example, and patent name is " long glass fiber reinforced polypropylene material and preparation method thereof ", separately number is in 101338051 the patent, to add flow ability modifying agent, and purpose is to improve the flowability of acrylic resin, is convenient to dipping.Yet flow ability modifying agent is the PP cooling masterbatch, main component is a superoxide, oxidation inhibitor generation radical termination reaction in superoxide and the system, a large amount of superoxide can be fallen by the oxidation inhibitor reaction consumes, so not only limited for the raising of polypropylene flowability, influence dipping effect, and the mobile stability that improves of polypropylene is also very poor, production quality control is very difficult; Simultaneously, because the reaction of the oxidation inhibitor generation radical termination in superoxide and the system, superoxide can consume mass consumption oxidation inhibitor, and the thermostability of material reduces greatly, causes shorten greatly the work-ing life of material.
Summary of the invention
Technical problem to be solved by this invention is: at the shortcoming of above prior art existence, a kind of long glass fiber reinforced polypropylene material and preparation method thereof is proposed, can strengthen the dipping effect of glass in melt polypropylene, eliminate or reduce harmful material, reduce smell, effectively improve the dipping effect and the mechanical property of material.
The technical scheme that the present invention solves above technical problem is:
A kind of long glass fiber reinforced polypropylene material, composed of the following components: polypropylene 35-68wt%, long glass fibres 30-60wt%, compatilizer 1-5wt%, oxidation inhibitor 0.3-1.0wt%.Polypropylene is the high molten polypropylene that refers to, melting index is 50-500g/10min, and the high molten polypropylene that refers to is the high molten homo-polypropylene that refers to, one or both mixing of Co-polypropylene.
The present invention uses the high molten polypropylene that refers to can directly improve the flowability of mixed system, increase the dipping effect of glass fibre and resin, need not to re-use mobile properties-correcting agent, and use meeting of mobile properties-correcting agent in the past and the reaction of the oxidation inhibitor generation radical termination in the system, mobile properties-correcting agent can be by mass consumption, do not have the effect of flow modifier, can cause product stability poor yet, also can produce irritating smell in the production process; And the use of avoiding of mobile properties-correcting agent has by chance solved above problem.
After the flowability of mixed system improves, lubricant effect also just obtains improving naturally, also no longer need to make with lubricator, and the lubricant under the temperature of reaction conditions of higher of the use of lubricant in the past is volatile, cause the product external surfaces bubble phenomenon easily, directly influence product surface quality; And avoiding using and by chance having solved this and be difficult to the problem that is resolved for a long time of lubricant also helps reducing production costs.
This shows that the present invention uses high molten finger polypropylene cleverly, thereby reach the purpose of the flowability that improves mixed system that no longer need to use mobile properties-correcting agent and lubricant, the consumption of compatilizer has also reduced, and achieves many things at one stroke.Need emphasis to be pointed out that, in the prior art, those skilled in the art also once considered to improve flowability with high molten finger polypropylene, but melting index is relatively low, even more important still can not abandon using mobile properties-correcting agent and lubricant, still can not effectively solve above problems of the prior art, and the present invention can be described as the technology prejudice that has overcome this area, breakthrough solution above technical problem, having solved those skilled in the art has to be solved and technical problem that be resolved not yet for a long time.
The preparation method of long glass fiber reinforced polypropylene material may further comprise the steps, and: ⑴ joins polypropylene, compatilizer, oxidation inhibitor that to make it thorough mixing in the mixing machine even; ⑵ the mixture that obtain step ⑴ joins in the twin screw extruder; ⑶ clamp-on blend melt in the impregnation mold that is connected with the twin screw extruder head, then long glass fibres passed through impregnation mold, and cooling, traction and pelletizing obtain the long glass fiber reinforced polypropylene material pellet; Among the step ⑶, the dipping temperature of impregnation mold is 240-280 ℃.
Dipping temperature is 240-280 ℃, and under this temperature, it is best that the flowability of resin melt reaches, and the bonding force of glass and matrix resin can strengthen simultaneously, and long glass fibres is fully flooded by melt.
The technical scheme that the present invention further limits is:
Aforesaid long glass fiber reinforced polypropylene material, compatilizer are maleic anhydride inoculated polypropylene, maleic anhydride grafting ratio＞0.8.The flowability of mixed system is improved, and maleic anhydride grafting ratio＞0.8, and the amount of compatilizer is just used fewly like this, can reduce the corrosion of compatilizer to equipment, and to the injury of human body, cost also is reduced.
Aforesaid long glass fiber reinforced polypropylene material, long glass fibres are the long glass fibres that coupling agent treatment is crossed.Earlier long glass fibres is handled with coupling agent, rather than directly in mixed system, add coupling agent, coupling agent and glass fibre have good bonding force, damage existing system balance easily and directly in mixed system, add coupling agent, and faint reaction can take place with other composition in coupling agent, influences product stability.
Aforesaid long glass fiber reinforced polypropylene material, long glass fibres are the continuous roving of LFT, and fiber type is an E glass, and the fibre single thread diameter is 2400Tex 17 μ m-1200Tex 16 μ m.
Aforesaid long glass fiber reinforced polypropylene material, oxidation inhibitor can be one or more the mixtures in antioxidant 1010, oxidation inhibitor 944, oxidation inhibitor 327, oxidation inhibitor 168, the oxidation inhibitor 1790.The preparation method of aforesaid long glass fiber reinforced polypropylene material, among the step ⑵, the twin screw extruder temperature is established 8 sections altogether, and first section and second section extrusion temperature are at 160-225 ℃, and other several sections extrusion temperatures are at 245-280 ℃; Engine speed is controlled at 200-450 rev/min.Among the step ⑶, the length of prepared long glass fiber-reinforced polypropylene pellet is 5-50mm.
Advantage of the present invention is: 1, adopt the molten polypropylene that refers to of the abundant height of the commercialization trade mark to make raw material, avoid harmful material such as unsaturated carboxylic acid or its acid anhydrides to add, simplify technology, reduce smell, reduce cost; 2, do not need to add the flow ability modifying agent of peroxide, this can effectively prevent with system in oxidation inhibitor generation radical termination reaction, improve dipping effect, enhance product performance and quality stability, prolong the work-ing life of material; 3, can reduce pollution, reduce corrosion, reduce production costs equipment to environment.
Embodiment
Embodiment one
A kind of long glass fiber reinforced polypropylene material, composed of the following components: polypropylene 37.5wt%, long glass fibres 60wt%, compatilizer 2wt%, oxidation inhibitor 0.5wt%.Polypropylene is the high molten polypropylene that refers to, melting index is 65g/10min, and the high molten polypropylene that refers to is the high molten homo-polypropylene that refers to, one or both mixing of Co-polypropylene.Compatilizer is a maleic anhydride inoculated polypropylene, maleic anhydride grafting ratio 0.9.Long glass fibres is the long glass fibres that coupling agent treatment is crossed.
Long glass fibres is the continuous roving of LFT, and fiber type is an E glass, and the fibre single thread diameter is 2400Tex 17 μ m.
The long glass fiber reinforced polypropylene material preparation methods may further comprise the steps:
The first step: polypropylene, compatilizer, oxidation inhibitor joined to make it thorough mixing in the mixing machine even;
Second step: the mixture that the first step is obtained joins in the twin screw extruder, and the twin screw extruder temperature is established 8 sections altogether, and first section and second section extrusion temperature are at 160 ℃, and other several sections extrusion temperatures are at 245 ℃; Engine speed is controlled at 200 rev/mins; Resin melt is clamp-oned in the impregnation mold that is connected with the twin screw extruder head;
The 3rd step: the long glass fibres (the long fine special-purpose glass of LFT) that accounts for total amount 60wt% then passes through impregnation mold, the dipping temperature of impregnation mold is 240 ℃, long glass fibres is fully flooded by melt, cool off at last, traction, pelletizing, promptly obtain the long glass fiber reinforced polypropylene material pellet.
Wherein, the length of prepared long glass fiber-reinforced polypropylene pellet is 12mm.
Embodiment two
A kind of long glass fiber reinforced polypropylene material, composed of the following components: polypropylene 64wt%, long glass fibres 30wt%, compatilizer 5wt%, oxidation inhibitor 1.0wt%.Polypropylene is the high molten polypropylene that refers to, melting index is 50g/10min, and the high molten polypropylene that refers to is the high molten homo-polypropylene that refers to, one or both mixing of Co-polypropylene.Compatilizer is a maleic anhydride inoculated polypropylene, maleic anhydride grafting ratio 1.2.Long glass fibres is the long glass fibres that coupling agent treatment is crossed.
Long glass fibres is the continuous roving of LFT, and fiber type is an E glass, and the fibre single thread diameter is 2400Tex 17 μ m.
The long glass fiber reinforced polypropylene material preparation methods may further comprise the steps:
The first step: polypropylene, compatilizer, oxidation inhibitor joined to make it thorough mixing in the mixing machine even;
Second step: the mixture that the first step is obtained joins in the twin screw extruder, and the twin screw extruder temperature is established 8 sections altogether, and first section and second section extrusion temperature are at 200 ℃, and other several sections extrusion temperatures are at 260 ℃; Engine speed is controlled at 300 rev/mins; Resin melt is clamp-oned in the impregnation mold that is connected with the twin screw extruder head;
The 3rd step: account for total amount 30wt% long glass fibres (the long fine special-purpose glass of LFT) then and pass through impregnation mold, the dipping temperature of impregnation mold is 260 ℃, long glass fibres is fully flooded by melt, cool off at last, traction, pelletizing, promptly obtain the long glass fiber reinforced polypropylene material pellet.
Wherein, the length of prepared long glass fiber-reinforced polypropylene pellet is 5mm.
Embodiment three
A kind of long glass fiber reinforced polypropylene material, composed of the following components: polypropylene 48.7wt%, long glass fibres 50wt%, compatilizer 1wt%, oxidation inhibitor 0.3wt%.Polypropylene is the high molten polypropylene that refers to, melting index is 500g/10min, and the high molten polypropylene that refers to is the high molten homo-polypropylene that refers to, one or both mixing of Co-polypropylene.Compatilizer is a maleic anhydride inoculated polypropylene, maleic anhydride grafting ratio 1.1.Long glass fibres is the long glass fibres that coupling agent treatment is crossed.
Long glass fibres is the continuous roving of LFT, and fiber type is an E glass, and the fibre single thread diameter is 1200Tex 16 μ m.
The long glass fiber reinforced polypropylene material preparation methods may further comprise the steps:
The first step: polypropylene, compatilizer, oxidation inhibitor joined to make it thorough mixing in the mixing machine even;
Second step: the mixture that the first step is obtained joins in the twin screw extruder, and the twin screw extruder temperature is established 8 sections altogether, and first section and second section extrusion temperature are at 225 ℃, and other several sections extrusion temperatures are at 280 ℃; Engine speed is controlled at 450 rev/mins; Resin melt is clamp-oned in the impregnation mold that is connected with the twin screw extruder head;
The 3rd step: account for total amount 50wt% long glass fibres (the long fine special-purpose glass of LFT) then and pass through impregnation mold, the dipping temperature of impregnation mold is 280 ℃, long glass fibres is fully flooded by melt, cool off at last, traction, pelletizing, promptly obtain the long glass fiber reinforced polypropylene material pellet.
Wherein, the length of prepared long glass fiber-reinforced polypropylene pellet is 50mm.
The present invention can also have other embodiment, and the technical scheme that equal replacement of all employings or equivalent transformation form all drops within the scope of protection of present invention.
Claims (8)
1. long glass fiber reinforced polypropylene material is characterized in that: composed of the following components by weight percentage:
Polypropylene 35-68%
Long glass fibres 30-60%
Compatilizer 1-5%
Oxidation inhibitor 0.3-1.0%
Described polypropylene is the high molten polypropylene that refers to, melting index is 50-500g/10min, and the molten polypropylene that refers to of described height is the high molten homo-polypropylene that refers to, one or both mixing of Co-polypropylene.
2. long glass fiber reinforced polypropylene material as claimed in claim 1 is characterized in that: described compatilizer is a maleic anhydride inoculated polypropylene, maleic anhydride grafting ratio＞0.8.
3. long glass fiber reinforced polypropylene material as claimed in claim 1 is characterized in that: described long glass fibres is the long glass fibres that coupling agent treatment is crossed.
4. long glass fiber reinforced polypropylene material as claimed in claim 1 is characterized in that: described long glass fibres is the continuous roving of LFT, and fiber type is an E glass, and the fibre single thread diameter is 2400Tex 17 μ m-1200Tex 16 μ m.
5. long glass fiber reinforced polypropylene material as claimed in claim 1 is characterized in that: described oxidation inhibitor is one or more the mixture in antioxidant 1010, oxidation inhibitor 944, oxidation inhibitor 327, oxidation inhibitor 168, the oxidation inhibitor 1790.
6. the preparation method of the described long glass fiber reinforced polypropylene material of arbitrary claim among the claim 1-5 may further comprise the steps:
⑴ join polypropylene, compatilizer, oxidation inhibitor that to make it thorough mixing in the mixing machine even;
⑵ the mixture that obtain step ⑴ joins in the twin screw extruder;
⑶ clamp-on blend melt in the impregnation mold that is connected with the twin screw extruder head, then long glass fibres passed through impregnation mold, and cooling, traction and pelletizing obtain the long glass fiber reinforced polypropylene material pellet;
It is characterized in that:
Among the described step ⑶, the dipping temperature of impregnation mold is 240-280 ℃.
7. the preparation method of long glass fiber reinforced polypropylene material as claimed in claim 6, it is characterized in that: among the described step ⑵, the twin screw extruder temperature is established 8 sections altogether, and first section and second section extrusion temperature are at 160-225 ℃, and other several sections extrusion temperatures are at 245-280 ℃; Engine speed is controlled at 200-450 rev/min.
8. the preparation method of long glass fiber reinforced polypropylene material as claimed in claim 6, it is characterized in that: among the described step ⑶, the length of prepared long glass fiber-reinforced polypropylene pellet is 5-50mm.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102675752A (en) * | 2012-05-22 | 2012-09-19 | 苏州新区华士达工程塑胶有限公司 | Formula of reinforced polypropylene (PP) |
| CN102942739A (en) * | 2012-12-04 | 2013-02-27 | 上海日之升新技术发展有限公司 | High-CTI (Creepage Tracking Index) high-GWIT (Glow-Wire Ignition Temperature) environmental-friendly flame-retardant glass fiber reinforced PP (Polypropylene) material and preparation method thereof |
| CN103183894A (en) * | 2011-12-29 | 2013-07-03 | 辽宁辽杰科技有限公司 | Continuous glass fiber reinforced polypropylene resin composite material and preparation method thereof |
| CN103343397A (en) * | 2013-05-13 | 2013-10-09 | 吉林省华纺纤维制造有限公司 | Preparation method of polypropylene short fibers without peculiar smells |
| CN103374174A (en) * | 2012-04-12 | 2013-10-30 | 辽宁辽杰科技有限公司 | Bidirectional continuous glass fiber reinforced PP (polypropylene) flame-retardant aging-resistant plate as well as preparation method thereof |
| CN103756134A (en) * | 2013-12-27 | 2014-04-30 | 南京聚隆科技股份有限公司 | Long glass fiber reinforced polypropylene material adopting foaming technique and preparation method thereof |
| CN103788491A (en) * | 2014-01-27 | 2014-05-14 | 上海日之升新技术发展有限公司 | Reaction type continuous long glass fiber reinforced polypropylene compound and preparation method thereof |
| CN103819810A (en) * | 2012-11-16 | 2014-05-28 | 江苏金发科技新材料有限公司 | Vehicular hydrolysis-resistant long glass fiber reinforced polypropylene composite material and preparation method thereof |
| CN104194155A (en) * | 2014-08-27 | 2014-12-10 | 南京聚隆科技股份有限公司 | Long-glass-fiber-reinforced polypropylene microfoamed material and preparation method thereof |
| CN104250405A (en) * | 2013-06-25 | 2014-12-31 | 中国石油化工股份有限公司 | Long glass fiber reinforced polypropylene composition and sheet preparation method thereof |
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| CN117209812A (en) * | 2023-08-02 | 2023-12-12 | 隆芝耀(浙江)新材料科技有限公司 | Preparation method of glass fiber reinforced polypropylene composite material |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103183894A (en) * | 2011-12-29 | 2013-07-03 | 辽宁辽杰科技有限公司 | Continuous glass fiber reinforced polypropylene resin composite material and preparation method thereof |
| CN103374174A (en) * | 2012-04-12 | 2013-10-30 | 辽宁辽杰科技有限公司 | Bidirectional continuous glass fiber reinforced PP (polypropylene) flame-retardant aging-resistant plate as well as preparation method thereof |
| CN102675752A (en) * | 2012-05-22 | 2012-09-19 | 苏州新区华士达工程塑胶有限公司 | Formula of reinforced polypropylene (PP) |
| CN103819810A (en) * | 2012-11-16 | 2014-05-28 | 江苏金发科技新材料有限公司 | Vehicular hydrolysis-resistant long glass fiber reinforced polypropylene composite material and preparation method thereof |
| CN102942739B (en) * | 2012-12-04 | 2015-09-09 | 上海日之升新技术发展有限公司 | A kind of high CTI value, high GWIT value environment-protection flame-proof fiberglass strengthen PP material and preparation method thereof |
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Application publication date: 20110413 |