CN103044770A - Long glass fiber reinforced polypropylene material with low smell and high performance and manufacturing method thereof - Google Patents
Long glass fiber reinforced polypropylene material with low smell and high performance and manufacturing method thereof Download PDFInfo
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Abstract
The invention discloses a long glass fiber reinforced polypropylene material with low smell and high performance and a manufacturing method thereof. The long glass fiber reinforced polypropylene material comprises the following rwa materials in percentage by mass: 24.5-91.9 percent of polypropylene, 5-50 percent of long glass fiber, 0.5-4 percent of chemical deodorant, 2-15 percent of polypropylene compatilizer, 0.5-3.5 percent of antioxygen, and 0.1-3 percent of processing agent. Compared with the prior art, the long glass fiber reinforced polypropylene material has the advantages that the long glass fiber reinforced polypropylene material with low smell and high performance further maintains high mechanical properties and high thermal stability on the premise of ensuring that the material has special excellent low smell, and can completely meet the demands of smell and mechanical properties of the long glass fiber reinforced polypropylene material by main engine plants such as Volkswagen and Ford.
Description
Technical field
The present invention relates to a kind of long glass fiber-reinforced polypropylene materials, relate in particular to a kind of low smell, high-performance long glass fiber reinforced polypropylene material and manufacture method thereof, belong to polypropylene material modification technology field.
Invention field
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provides a kind of gas to hang down smell, high-performance long glass fiber reinforced polypropylene material.
The present invention also provides the preparation method of two kinds of above-mentioned low smells, high-performance Long Glass Fiber Reinforced PP Composite.
For solving the problems of the technologies described above, the present invention takes technical scheme as follows:
A kind of low smell, high-performance Long Glass Fiber Reinforced PP Composite are calculated by mass percentage, and its formula for raw stock is as follows:
Polypropylene: 24.5～91.9%;
Long glass fibres: 5～50%;
Chemistry deodovization agent: 0.5～4%;
Polypropylene compatilizer: 2～15%;
Oxidation inhibitor: 0.5～3.5%;
Processing aid: 0.1～3%.
Described polyacrylic melt flow rate (MFR) is 40～250g/10min.
Described long glass fibres is continuous alkali-free glass fiber, and the glass diameter is 10～25 μ m.
Described chemical deodovization agent is the composition of one or more chemical deodovization agents.Typical chemical deodovization agent such as sequestrant etc.Described sequestrant is hyperbranched polyether modification sequestrant, is selected from hyperbranched glycidyl ether modified diethyl pentetic acid, hyperbranched glycidyl ether modified dodecane tetraacethyl and hyperbranched glycidyl ether modified ethylenediamine tetraacetic acid (EDTA).
Described compatilizer is toxilic acid and derivative, vinylformic acid, glycidyl acrylate and the polypropylene grafted graft polypropylene that forms, and percentage of grafting is 0.5～2.2%.
Described oxidation inhibitor is antioxidant 1010, irgasfos 168, oxidation inhibitor DSTP, antioxidant 3114, oxidation inhibitor 619F, the mixture of one or more in the oxidation inhibitor 627.
Described processing aid comprises one or more the mixture in stearic acid, stearate, polyolefin-wax, the polysiloxane.
Above-mentioned low smell, the preparation for processing of high-performance Long Glass Fiber Reinforced PP Composite comprise following two kinds:
Method one: direct pultrusion pickling process:
1) according to filling a prescription passing through first the forcing machine plastifying fusion behind polypropylene, chemical deodovization agent, compatilizer, oxidation inhibitor, the processing aid mixing, then melt is inputted steeping vat, the steeping vat temperature is made as 250～350 ℃;
2) continuous long glass fiber enters steeping vat, dispersion and by the melt thorough impregnation, the gained material pulls out steeping vat and cooling and dicing, makes low smell, high-performance long glass fiber-reinforced polypropylene materials under the transmission mechanism effect.
Preferred material particle length is 8-18mm.
Method two: batch mixed method:
Step 1: long glass fiber-reinforced polypropylene master batch preparation.With passing through first the forcing machine plastifying fusion behind polypropylene, compatilizer, the processing aid mixing, then melt is inputted steeping vat according to prescription, the steeping vat temperature is made as 250～350 ℃.Continuously roving glass fiber enters steeping vat, dispersion and by the melt thorough impregnation, the gained material pulls out steeping vat and cooling and dicing, makes the long glass fiber-reinforced polypropylene master batch under the transmission mechanism effect, and preferred particle length is 8-18mm.
Step 2: low odor polypropylene master batch preparation.Polypropylene, low smell auxiliary agent, oxidation inhibitor are joined in the twin screw extruder, and melt blending is extruded, and then makes the low odor polypropylene master batch through cooling and pelletizing, and preferred particle length is 8-18mm.
Step 3: the low odor polypropylene master batch that the long glass fiber-reinforced polypropylene master batch that step 1 is made and step 2 make mixes and namely obtains low smell, high-performance Long Glass Fiber Reinforced PP Composite, and the particle length of long glass fiber-reinforced polypropylene master batch and low odor polypropylene master batch is identical in this material generally speaking.
The present invention hangs down smell, when the high-performance long glass fiber-reinforced polypropylene materials uses, can directly be injection molded into part, need not other complicated procedures of forming.
Compared with prior art, the present invention has following advantage:
The present invention hangs down smell, high-performance long glass fiber-reinforced polypropylene materials and also keeps strong mechanical performance, high thermal stability guaranteeing that material has in the situation of outstanding especially low smell, can satisfy the main engine plants such as masses, Ford to the requirement of long glass fiber-reinforced polypropylene materials odor properties, mechanical property fully.
The preparation method that the present invention hangs down smell, high-performance long glass fiber-reinforced polypropylene materials is flexible, both can take direct pultrusion pickling process, and can take again to make respectively long glass fiber-reinforced polypropylene master batch, low odor polypropylene master batch, both be criticized mixed uniformly batch mixed method again.Not only efficient is high for the preparation method so flexibly, and economy is better, can also satisfy different raw-material processing requests, so process controllability is extremely strong, and material property is more stable.
Background technology
Lightweight, the characteristics such as intensity is high, good impact resistance, good stability of the dimension that long glass fiber-reinforced polypropylene materials has be can be used to substitute the metallic substance such as traditional enhancement engineering plastics even steel in actual applications.In recent years, progress along with automotive light weight technology, long glass fiber-reinforced polypropylene materials relies on the high advantage of its cost performance as being applied in more and more widely automotive industry with the main raw of moulding Dai Gang, adopt long glass fiber-reinforced polypropylene materials making automobile component performance suitable with steel component performance, but weight reducing 40% even more, economy is also better.
The roving glass fiber strongthener is widely used in automobile industry such as component such as dashboard skeleton, air channel, multiple bays.Existing long glass fiber-reinforced polypropylene materials can include the relatively poor materials of other smells such as treating compound, compatilizer for the assurance material property in material, thereby the smell of long glass fiber-reinforced polypropylene materials is also relatively relatively poor.
Along with the lifting of life idea, people are also more and more higher to the requirement of automobile.Macromolecular material and polymer composite are as the main raw of automotive upholstery, and its smell height has larger impact to smell in the car.If smell is larger in the car, not only have a strong impact on reading with car body of human consumer, also passenger's health had adverse influence, therefore, each main engine plants also payes attention to more to in-car air quality, and automotive material especially interior trim has been proposed higher odor property requirement with plastic material.Only have low smell, high-performance long glass fiber-reinforced polypropylene materials could satisfy the more and more stricter requirement of automotive industry.
Embodiment
Further specify technical characterstic of the present invention below by embodiment and Comparative Examples, do not violating under the aim of the present invention, the present invention should be not limited to the content that following examples are specifically expressed.
The embodiment raw materials is as follows:
PP-1: melt flow rate (MFR) is 40g/10min;
PP-2: melt flow rate (MFR) is 120g/10min;
PP-3: melt flow rate (MFR) is 240g/10min;
Roving glass fiber: 362K, megalith group;
Chemistry deodovization agent A: hyperbranched glycidyl ether modified diethyl pentetic acid;
Chemistry deodovization agent B: hyperbranched glycidyl ether modified dodecane tetraacethyl
Chemistry deodovization agent C: hyperbranched glycidyl ether modified ethylenediamine tetraacetic acid (EDTA)
Compatilizer: maleic anhydride inoculated polypropylene, percentage of grafting: 1.0%, the molten finger: 150;
Oxidation inhibitor: 619F and 1010: Ciba fine chemicals;
Processing aid: calcium stearate.
The product performance testing method:
Tensile property: press ISO 527 standards, speed 5mm/min.
Bending property: press ISO 178 standards, speed 2mm/min.
Notched Izod impact strength: press ISO 179 standards.
Heat-drawn wire: according to ISO 75 standards, load is 1.8MPa.
Smell: according to Ford FLTM BO 131-03 standard, temperature is 80 ℃.
Condensed components: according to Ford SAE J1756 standard.
Embodiment 1:
Take directly to squeeze pickling process preparation, pass through first the forcing machine plastifying fusion according to the prescription in the table 1 after with the raw material blending except glass, then melt is inputted steeping vat, the steeping vat temperature is made as 250 ℃.Continuously roving glass fiber enters steeping vat, dispersion and by the melt thorough impregnation under the transmission mechanism effect, the gained material pulls out steeping vat and cooling and dicing, make low smell, high-performance long glass fiber-reinforced polypropylene materials, glass fiber content is 5% in this material, and particle length is 8mm.Adopt injection moulding machine preparation standard test sample, test result sees Table 1.
Embodiment 2:
Take directly to squeeze pickling process preparation, pass through first the forcing machine plastifying fusion according to the prescription in the table 1 after with the raw material blending except glass, then melt is inputted steeping vat, the steeping vat temperature is made as 280 ℃.Continuously roving glass fiber enters steeping vat, dispersion and by the melt thorough impregnation under the transmission mechanism effect, the gained material pulls out steeping vat and cooling and dicing, make low smell, high-performance long glass fiber-reinforced polypropylene materials, glass fiber content is 20% in this material, and particle length is 11mm.Adopt injection moulding machine preparation standard test sample, test result sees Table 1.
Embodiment 3:
Take directly to squeeze pickling process preparation, pass through first the forcing machine plastifying fusion according to the prescription in the table 1 after with the raw material blending except glass, then melt is inputted steeping vat, the steeping vat temperature is made as 310 ℃.Continuously roving glass fiber enters steeping vat, dispersion and by the melt thorough impregnation under the transmission mechanism effect, the gained material pulls out steeping vat and cooling and dicing, make low smell, high-performance long glass fiber-reinforced polypropylene materials, glass fiber content is 45% in this material, and particle length is 14mm.Adopt injection moulding machine preparation standard test sample, test result sees Table 1.
Embodiment 4:
Take directly to squeeze pickling process preparation, pass through first the forcing machine plastifying fusion according to the prescription in the table 1 after with the raw material blending except glass, then melt is inputted steeping vat, the steeping vat temperature is made as 350 ℃.Continuously roving glass fiber enters steeping vat, dispersion and by the melt thorough impregnation under the transmission mechanism effect, the gained material pulls out steeping vat and cooling and dicing, make low smell, high-performance long glass fiber-reinforced polypropylene materials, glass fiber content is 50% in this material, and particle length is 18mm.Adopt injection moulding machine preparation standard test sample, test result sees Table 1.
Embodiment 5:
Take batch mixed legal system standby, comprise three steps.
Step 1: preparation long glass fiber-reinforced polypropylene master batch 1.Pass through first the forcing machine plastifying fusion according to the prescription in the table 2 after with the raw material blending except glass, then melt is inputted steeping vat, the steeping vat temperature is made as 300 ℃.Continuously roving glass fiber enters steeping vat, dispersion and by the melt thorough impregnation, the gained material pulls out steeping vat and cooling and dicing, makes the long glass fiber-reinforced polypropylene master batch under the transmission mechanism effect, and this master batch length is 8mm.
Step 2: preparation low odor polypropylene master batch 1.According to the prescription in the table 3 all raw materials are mixed rear employing twin screw extruder and melt extrude, through cooling and dicing, make low odor polypropylene master batch 1, this master batch length is 8mm.
Step 3: the low odor polypropylene master batch 1 that the long glass fiber-reinforced polypropylene master batch 1 that step 1 is made and step 2 make is according to the prescription mixing in the table 4, glass fiber content is 5% in the material behind the mixing, adopt injection moulding machine preparation standard test sample, test result sees Table 4.
Embodiment 6:
Take batch mixed legal system standby, comprise three steps.
Step 1: preparation long glass fiber-reinforced polypropylene master batch 2.Pass through first the forcing machine plastifying fusion according to the prescription in the table 2 after with the raw material blending except glass, then melt is inputted steeping vat, the steeping vat temperature is made as 320 ℃.Continuously roving glass fiber enters steeping vat, dispersion and by the melt thorough impregnation, the gained material pulls out steeping vat and cooling and dicing, makes the long glass fiber-reinforced polypropylene master batch under the transmission mechanism effect, and this master batch length is 12mm.
Step 2: preparation low odor polypropylene master batch 2.According to the prescription in the table 3 all raw materials are mixed the rear twin screw extruder that adopts first and melt extrude, through cooling and dicing, make low odor polypropylene master batch 2, this master batch length is 12mm.
Step 3: the low odor polypropylene master batch 2 that the long glass fiber-reinforced polypropylene master batch 2 that step 1 is made and step 2 make is according to the prescription mixing in the table 4, glass fiber content is 15% in the material behind the mixing, adopt injection moulding machine preparation standard test sample, test result sees Table 4.
Embodiment 7:
Take batch mixed legal system standby, comprise three steps.
Step 1: preparation long glass fiber-reinforced polypropylene master batch 2.Pass through first the forcing machine plastifying fusion according to the prescription in the table 2 after with the raw material blending except glass, then melt is inputted steeping vat, the steeping vat temperature is made as 320 ℃.Continuously roving glass fiber enters steeping vat, dispersion and by the melt thorough impregnation, the gained material pulls out steeping vat and cooling and dicing, makes the long glass fiber-reinforced polypropylene master batch under the transmission mechanism effect, and this master batch length is 12mm.
Step 2: preparation low odor polypropylene master batch 3.According to the prescription in the table 3 all raw materials are mixed rear employing twin screw extruder and melt extrude, through cooling and dicing, make low odor polypropylene master batch 3, this master batch length is 12mm.
Step 3: the low odor polypropylene master batch 3 that the high-performance long glass fiber-reinforced polypropylene master batch 2 that step 1 is made and step 2 make is according to the prescription mixing in the table 4, glass fiber content is 30% in the material behind the mixing, adopt injection moulding machine preparation standard test sample, test result sees Table 4.
Embodiment 8:
Take batch mixed legal system standby, comprise three steps.
Step 1: preparation long glass fiber-reinforced polypropylene master batch 3.Pass through first the forcing machine plastifying fusion according to the prescription in the table 2 after with the raw material blending except glass, then melt is inputted steeping vat, the steeping vat temperature is made as 350 ℃.Continuously roving glass fiber enters steeping vat, dispersion and by the melt thorough impregnation, the gained material pulls out steeping vat and cooling and dicing, makes the long glass fiber-reinforced polypropylene master batch under the transmission mechanism effect, and this master batch length is 18mm.
Step 2: preparation low odor polypropylene master batch 4.According to the prescription in the table 3 all raw materials are mixed rear employing twin screw extruder and melt extrude, through cooling and dicing, make low odor polypropylene master batch 4, this master batch length is 18mm.
Step 3: the low odor polypropylene master batch 4 that the high-performance long glass fiber-reinforced polypropylene master batch 3 that step 1 is made and step 2 make is according to the prescription mixing in the table 4, glass fiber content is 40% in the material behind the mixing, adopt injection moulding machine preparation standard test sample, test result sees Table 4.
Embodiment 9:
Take batch mixed legal system standby, comprise three steps.
Step 1: preparation long glass fiber-reinforced polypropylene master batch 3.Pass through first the forcing machine plastifying fusion according to the prescription in the table 2 after with the raw material blending except glass, then melt is inputted steeping vat, the steeping vat temperature is made as 350 ℃.Continuously roving glass fiber enters steeping vat, dispersion and by the melt thorough impregnation, the gained material pulls out steeping vat and cooling and dicing, makes the long glass fiber-reinforced polypropylene master batch under the transmission mechanism effect, and this master batch length is 18mm.
Step 2: preparation low odor polypropylene master batch 5.According to the prescription in the table 3 all raw materials are mixed rear employing twin screw extruder and melt extrude, through cooling and dicing, make low odor polypropylene master batch 5, this master batch length is 18mm.
Step 3: the low odor polypropylene master batch 5 that the high-performance long glass fiber-reinforced polypropylene master batch 3 that step 1 is made and step 2 make is according to the prescription mixing in the table 4, glass fiber content is 50% in the material behind the mixing, adopt injection moulding machine preparation standard test sample, test result sees Table 4.
Comparative Examples 1:
Take stretching connecing to squeeze the pickling process preparation, pass through first the forcing machine plastifying fusion according to the prescription in the table 1 after with the raw material blending except glass, then melt is inputted steeping vat, the steeping vat temperature is made as 270 ℃.Continuously roving glass fiber enters steeping vat, dispersion and by the melt thorough impregnation, the gained material pulls out steeping vat and cooling and dicing, makes long glass fiber-reinforced polypropylene materials under the transmission mechanism effect, and glass fiber content is 15% in this material, and particle length is 8mm.Adopt injection moulding machine preparation standard test sample, test result sees Table 1.
Comparative Examples 2:
Take stretching connecing to squeeze the pickling process preparation, pass through first the forcing machine plastifying fusion according to the prescription in the table 1 after with the raw material blending except glass, then melt is inputted steeping vat, the steeping vat temperature is made as 300 ℃.Continuously roving glass fiber enters steeping vat, dispersion and by the melt thorough impregnation, the gained material pulls out steeping vat and cooling and dicing, makes long glass fiber-reinforced polypropylene materials under the transmission mechanism effect, and glass fiber content is 30% in this material, and particle length is 13mm.Adopt injection moulding machine preparation standard test sample, test result sees Table 1.
Comparative Examples 3:
Take batch mixed legal system standby, comprise three steps.
Step 1: preparation long glass fiber-reinforced polypropylene master batch 2.Pass through first the forcing machine plastifying fusion according to the prescription in the table 2 after with the raw material blending except glass, then melt is inputted steeping vat, the steeping vat temperature is made as 320 ℃.Continuously roving glass fiber enters steeping vat, dispersion and by the melt thorough impregnation, the gained material pulls out steeping vat and cooling and dicing, makes the long glass fiber-reinforced polypropylene master batch under the transmission mechanism effect, and this master batch length is 12mm.
Step 2: preparation polypropylene agglomerate 6.According to the prescription in the table 3 all raw materials are mixed rear employing twin screw extruder and melt extrude, through cooling and dicing, make polypropylene agglomerate 6, this master batch length is 12mm.
Step 3: the polypropylene agglomerate 6 that the long glass fiber-reinforced polypropylene master batch 2 that step 1 is made and step 2 make is according to the prescription mixing in the table 4, and glass fiber content is 20% in the material behind the mixing, adopts injection moulding machine preparation standard test sample, and test result sees Table 4.
Comparative Examples 7:
Take batch mixed legal system standby, comprise three steps.
Step 1: preparation long glass fiber-reinforced polypropylene master batch 3.Pass through first the forcing machine plastifying fusion according to the prescription in the table 2 after with the raw material blending except glass, then melt is inputted steeping vat, the steeping vat temperature is made as 350 ℃.Continuously roving glass fiber enters steeping vat, dispersion and by the melt thorough impregnation, the gained material pulls out steeping vat and cooling and dicing, makes the long glass fiber-reinforced polypropylene master batch under the transmission mechanism effect, and this master batch length is 18mm.
Step 2: preparation polypropylene agglomerate 7.According to the prescription in the table 3 all raw materials are mixed the rear twin screw extruder that adopts first and melt extrude, through cooling and dicing, make polypropylene agglomerate 7, this master batch length is 18mm.
Step 3: the polypropylene agglomerate 7 that the long glass fiber-reinforced polypropylene master batch 2 that step 1 is made and step 2 make is according to the prescription mixing in the table 4, and glass fiber content is 45% in the material behind the mixing, adopts injection moulding machine preparation standard test sample, and test result sees Table 4.
Table 1: prescription and the performance test results of direct pultrusion pickling process embodiment 1-4, Comparative Examples 1-2
Table 2: the long glass fiber-reinforced polypropylene master batch preparation of batch mixed method
Table 3: the low odor polypropylene master batch preparation of batch mixed method
Table 4: prescription and the performance test results of crowd mixed method embodiment 5-9, Comparative Examples 3-4
The performance test results by embodiment 1-4 and Comparative Examples 1-2 can be found out: the present invention hang down in smell, the high-performance long glass fiber-reinforced polypropylene materials adopt add chemical deodovization agent after, material have lower smell, a lower condensed components.The performance test results by embodiment 5-9 and Comparative Examples 3-4 can be found out: the same batch mixed method of using, added chemical deodovization agent after, material has lower smell, lower condensed components.
Can see that from above embodiment test result the low smell, the high-performance long glass fiber-reinforced polypropylene materials that make by the present invention not only have very low smell, also have excellent mechanical property, thermotolerance.This low smell, high-performance long glass fiber-reinforced polypropylene materials especially are suitable for making the auto parts that odor properties, mechanical property are all had relatively high expectations, such as dashboard skeleton, air channel, multiple bay, door-plate etc.
Claims (11)
1. a low smell, high-performance Long Glass Fiber Reinforced PP Composite, it is characterized in that: the raw material by following mass percent meter forms:
Polypropylene: 24.5～91.9%;
Long glass fibres: 5～50%;
Chemistry deodovization agent: 0.5～4%;
Polypropylene compatilizer: 2～15%;
Oxidation inhibitor: 0.5～3.5%;
Processing aid: 0.1～3%.
2. a kind of low smell according to claim 1, high-performance Long Glass Fiber Reinforced PP Composite, it is characterized in that: described polyacrylic melt flow rate (MFR) is 40～250g/10min.
3. a kind of low smell according to claim 1, high-performance Long Glass Fiber Reinforced PP Composite, it is characterized in that: described long glass fibres is continuous alkali-free glass fiber, the glass diameter is 10～25 μ m.
4. a kind of low smell according to claim 1, high-performance Long Glass Fiber Reinforced PP Composite is characterized in that: described chemical deodovization agent is the composition of one or more chemical deodovization agents, and described chemical deodovization agent is sequestrant.
5. a kind of low smell according to claim 4, high-performance Long Glass Fiber Reinforced PP Composite, it is characterized in that: described sequestrant is hyperbranched polyether modification sequestrant, is selected from hyperbranched glycidyl ether modified diethyl pentetic acid, hyperbranched glycidyl ether modified dodecane tetraacethyl and hyperbranched glycidyl ether modified ethylenediamine tetraacetic acid (EDTA).
6. a kind of low smell according to claim 1, high-performance Long Glass Fiber Reinforced PP Composite, it is characterized in that: described compatilizer is toxilic acid and derivative, vinylformic acid, glycidyl acrylate and the polypropylene grafted graft polypropylene that forms, and percentage of grafting is 0.5～2.2%.
7. a kind of low smell according to claim 1, high-performance Long Glass Fiber Reinforced PP Composite is characterized in that described oxidation inhibitor is antioxidant 1010, irgasfos 168, oxidation inhibitor DSTP, antioxidant 3114, oxidation inhibitor 619F, the mixture of one or more in the oxidation inhibitor 627.
8. a kind of low smell according to claim 1, high-performance Long Glass Fiber Reinforced PP Composite is characterized in that: described processing aid comprises one or more the mixture in stearic acid, stearate, polyolefin-wax and the polysiloxane.
9. a method for preparing low smell, high-performance Long Glass Fiber Reinforced PP Composite is characterized in that: the steps include:
1) according to filling a prescription passing through first the forcing machine plastifying fusion behind polypropylene, chemical deodovization agent, compatilizer, oxidation inhibitor, the processing aid mixing, then melt is inputted steeping vat, the steeping vat temperature is made as 250～350 ℃;
2) continuous long glass fiber enters steeping vat, dispersion and by the melt thorough impregnation, the gained material pulls out steeping vat and cooling and dicing, makes low smell, high-performance long glass fiber-reinforced polypropylene materials under the transmission mechanism effect.
10. a method for preparing low smell, high-performance Long Glass Fiber Reinforced PP Composite is characterized in that: the steps include:
1) long glass fiber-reinforced polypropylene master batch preparation: with passing through first the forcing machine plastifying fusion behind polypropylene, compatilizer, the processing aid mixing, then melt is inputted steeping vat according to prescription, the steeping vat temperature is made as 250～350 ℃; Continuously roving glass fiber enters steeping vat, dispersion and by the melt thorough impregnation, the gained material pulls out steeping vat and cooling and dicing, makes the long glass fiber-reinforced polypropylene master batch under the transmission mechanism effect, and its particle length is 8-18mm;
2) low odor polypropylene master batch preparation: polypropylene, low smell auxiliary agent, oxidation inhibitor are joined in the twin screw extruder, and melt blending is extruded, and then makes the low odor polypropylene master batch through cooling and pelletizing, and its particle length is 8-18mm.
3) the long glass fiber-reinforced polypropylene master batch and the step 2 that step 1) are made) the low odor polypropylene master batch that makes mixes and namely obtains low smell, high-performance Long Glass Fiber Reinforced PP Composite.
11. preparation method according to claim 10 is characterized in that: described long glass fiber-reinforced polypropylene master batch is identical with the particle length of low odor polypropylene master batch.
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| CN108727683A (en) * | 2017-04-20 | 2018-11-02 | 中国石化扬子石油化工有限公司 | A kind of preparation method of polypropene composition |
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| CN108659495A (en) * | 2018-05-18 | 2018-10-16 | 中广核俊尔（上海）新材料有限公司 | The glass fiber reinforced polycarbonate composite material and preparation method of low smell |
| CN112469783A (en) * | 2018-07-30 | 2021-03-09 | 陶氏环球技术有限责任公司 | Elastomer composition |
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| CN111748149A (en) * | 2020-07-03 | 2020-10-09 | 会通新材料股份有限公司 | Low-odor long glass fiber reinforced micro-foaming polypropylene composite material and preparation method thereof |
| CN112724526A (en) * | 2020-12-29 | 2021-04-30 | 上海普利特复合材料股份有限公司 | Low-agglomeration long glass fiber reinforced polypropylene composite material for automotive interior and preparation method thereof |
| CN114538797A (en) * | 2022-04-01 | 2022-05-27 | 巨石集团有限公司 | Glass fiber impregnating compound, and preparation method and application thereof |
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