CN1158339A - High elastic modified polypropylene material and its prepn. method - Google Patents
High elastic modified polypropylene material and its prepn. method Download PDFInfo
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- CN1158339A CN1158339A CN 96117247 CN96117247A CN1158339A CN 1158339 A CN1158339 A CN 1158339A CN 96117247 CN96117247 CN 96117247 CN 96117247 A CN96117247 A CN 96117247A CN 1158339 A CN1158339 A CN 1158339A
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- modified polypropylene
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- polypropylene material
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Abstract
A process for preparing modified high-resiliency polypropene features that under the existance of surfactant polypropene it is mixed with inorganic salt, which is sulfate of alkali-earth metal (10-40 Wt.%, 1-5 microns in granularity) chosen from calcium sulfate, barium sulfate and zinc sulfate.
Description
The present invention relates to polymer modification material and manufacturing technology thereof, relate in particular to a kind of high elastic modified polypropylene material and preparation method thereof.
Modified polypropylene material has a very wide range of applications in the daily life goods, for example, in the making of parts such as automotive industry, daily-use chemical industry, sports apparatus, for another example, the handle of the large-screen receiver of producing is owing to require high to the material rebound resilience both at home and abroad, prepared with polyoxymethylene in the past, production cost height not only, and easily decomposite harmful gas in the course of processing, for reducing production costs, improve work situation, people make great efforts to seek inexpensive harmless polyoxymethylene equivalent material and are applied on the televisor handle and its occasion.Domestic with inorganic salt filled polypropylenes such as CaCO3, talcum soil in order to improving impact-resistance etc., do not have effect [referring to " engineering plastics applications " 94.2.11] [" (branch resin and plastics " 94.2.25 but improve rebound resilience].Chinese patent application 94114802,90103904 has provided elastic-plastic composite and manufacture method thereof, with vinyl or other olefin material and the polypropylene material is crosslinked or graft copolymerization improves the elastic performance of material.In polypropylene, fill inorganic salt in order to improve the elastic bibliographical information of material but yet there are no.
The purpose of this invention is to provide high resilience modified polypropylene material of a kind of inexpensive, handling ease, environmental sound and preparation method thereof.
The objective of the invention is to realize with following proposal: mix with polypropylene under the condition that tensio-active agent exists with inorganic salt, it is characterized in that described inorganic salt are alkaline earth metal sulphates, its particle diameter is 1 μ-5 μ, and weight percent content is 10-40%.Alkaline earth metal sulphate is selected in calcium sulfate, barium sulfate, zinc sulfate.Alkaline earth metal sulphate can be mixing more than two kinds in calcium sulfate, barium sulfate, zinc sulfate.
The preparation method of high elastic modified polypropylene material of the present invention, mix in the presence of tensio-active agent with exsiccant metal-salt and polypropylene material, through the twin screw extruder granulation, it is characterized in that metal-salt is barium sulfate, calcium sulfate or its mixed composition, it is 1 μ-5 μ that its particle diameter is controlled at, weight percentage is 10-40%, and extruder temperature is controlled at 180-230 ℃.
The polypropylene that the present invention is suitable for is tactic polypropylene pellet or powder, the alkaline earth metal sulphate that is suitable for is CaSO4, BaSO4, ZnSO4 and composite components thereof, the alkaline earth metal sulphate grain diameter must be controlled to be 1-5 μ, particle is excessive, or because the dry bad particle agglomeration that causes, it is irregular that the capital causes particle to disperse in mixture, and the rebound performance of the modified polypropylene material of making just descends.Alkaline earth metal sulphate percentage composition in mixed system also must be controlled at certain limit, crosses the low or too high material rebound performance that all can cause and descends.
Tensio-active agent routine of the present invention, but preferred titanate ester tensio-active agent, polyether surfactant, aluminic acid esters surface active agent.
High elastic modified polypropylene material of the present invention, its cost is low, preparation technology is simple, and material all domesticizes, but suitability for industrialized production.This kind modified polypropylene material rebound performance has clear improvement, other mechanical property (as anti-impact, stretching etc.) satisfies the structural part requirement, cheap, produce and the equal unharmful substance generation of use, alternative expensive polyoxymethylene is applied on the televisor handle and it requires the occasion of high resilience material, more can be used for the manufacturing of some auto parts, daily life product, substitute expensive engineering plastics.
The following performance that high elastic modified polypropylene material of the present invention also has:
1. have extraordinary rebound performance and mechanical property, but with the televisor handle resilience of this material system more than 1000 times, selected prescription is more than 3000 times, indeformable, do not rupture, its anti-impact and mechanical property satisfy the requirement of structural part.
2. the price of this kind material is less than half of import polyoxymethylene price, and alternative polyoxymethylene can produce remarkable economic efficiency in being applied to produce.
3. prepare and use and all do not produce objectionable impurities in this kind materials process.
The invention will be further described below in conjunction with the embodiment of product and manufacture craft:
Alkaline earth salt preferably barium sulfate among the present invention, the weight percent of its interpolation is preferably 25%-30%, and particle diameter is 2-4 μ.
Embodiment 1. is with F401 polypropylene granules after the drying treatment and 20% (weight percent, the BaSO4 of about 3 μ of grain diameter (median size) down together) mixes in the presence of low molecular polyether type tensio-active agent, send into the twin screw extruder granulation, extruder temperature is controlled at 180-230 ℃, through naturally cooling, pelletizing.Get the handle of 25 cun televisors of modified polypropene pellet injection moulding that this kind prepare, through rebound test, resilience number of times 1200 is indeformable, can reply fully.(Comparative Examples, under the non-modified F401 polypropylene equal conditions, resilience number of times 100, promptly distortion can not be replied fully).Elastic test employing test machine mechanical life is tested, and the stroke that opens the door is 20mm, and frequency of impact is 20 times/min, and following embodiment is identical.
Embodiment 2. mixes the CaSO4 of about 5 μ of grain diameter of the F401 polypropylene granules after the drying treatment and 20% in the presence of titanic acid ester, send into the twin screw extruder granulation, and extruder temperature is controlled at 180-200 ℃, through naturally cooling, pelletizing.Get the handle of 25 cun televisors of modified polypropene pellet injection moulding that this kind prepare, through rebound test, resilience number of times 1000 is indeformable, can reply fully.
Embodiment 3. mixes the BaSO4 of about 3 μ of grain diameter of the F401 polypropylene granules after the drying treatment and 28% in the presence of a certain amount of coupling agent TTOPP-38S, send into the twin screw extruder granulation, extruder temperature is controlled at 200-230 ℃, through naturally cooling, and pelletizing.Get the handle of 25 cun televisors of modified polypropene pellet injection moulding that this kind prepare, through rebound test, resilience number of times 2600 is indeformable, can reply fully.
Embodiment 4. mixes the BaSO4 of about 3 μ of grain diameter of the F401 polypropylene granules after the drying treatment and 35% in the presence of a certain amount of TTOPP-38S, send into the twin screw extruder granulation, extruder temperature is controlled at 180-230 ℃, through naturally cooling, and pelletizing.Get the handle of 25 cun televisors of modified polypropene pellet injection moulding that this kind prepare, through rebound test, 1400-1500 is indeformable for the resilience number of times, can reply fully.
Embodiment 5. mixes the BaSO4 of about 5 μ of grain diameter of the F401 polypropylene granules after the drying treatment and 20% in the presence of a certain amount of TTOPP-38S, send into the twin screw extruder granulation, extruder temperature is controlled at 180-230 ℃, through naturally cooling, and pelletizing.Get the handle of 25 cun televisors of modified polypropene pellet injection moulding that this kind prepare, through rebound test, resilience number of times 1000 is indeformable.
Embodiment 6. is that the CaCO3 of 5 μ is combined into 25% prescription with the grain diameter of the BaSO4 of F401 polypropylene granules after the drying treatment and about 3 μ of grain diameter and identical weight, in the presence of a certain amount of TTOPP-38S, mix, send into the twin screw extruder granulation, extruder temperature is controlled at 200 ℃, through naturally cooling, pelletizing.Get the handle of 25 cun televisors of modified polypropene pellet injection moulding that this kind prepare, through rebound test, resilience number of times 1000 is indeformable.
Claims (8)
1. a high elastic modified polypropylene material mixes with polypropylene under the condition that tensio-active agent exists with inorganic salt, it is characterized in that described inorganic salt are alkaline earth metal sulphates, and its particle diameter is 1 μ-5 μ, and weight percent content is 10-40%.
2. by the described modified polypropylene material of claim 1, it is characterized in that described alkaline earth metal sulphate selects in calcium sulfate, barium sulfate, zinc sulfate.
3. by the described modified polypropylene material of claim 1, it is characterized in that described alkaline earth metal sulphate can be mixing more than two kinds in calcium sulfate, barium sulfate, zinc sulfate.
4. by claim 1,2 described modified polypropylene materials, it is characterized in that described alkaline earth salt is a barium sulfate, the weight percent of interpolation is 25%-30%, and particle diameter is 2-4 μ.
5. by claim 1,2 described modified polypropylene materials, it is characterized in that the weight percent that described alkaline-earth metal calcium sulfate adds is 25-30%, particle diameter is 4-5 μ.
6. by the described modified polypropylene material of claim 3, it is characterized in that described alkaline earth salt is that barium sulfate and 1: 1 ratio of calcium sulfate are added, and weight percent is 25-28%, particle diameter is 3-4 μ.
7. by claim 1,2 described modified polypropylene materials, it is characterized in that described polypropylene is for having rule pellet or powder.
8. the preparation method of a high elastic modified polypropylene material, mix in the presence of tensio-active agent with exsiccant metal-salt and polypropylene material, through the twin screw extruder granulation, it is characterized in that metal-salt is barium sulfate, calcium sulfate or its mixed composition, it is 1 μ-5 μ that its particle diameter is controlled at, weight percentage is 10-40%, and extruder temperature is controlled at 180-230 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96117247A CN1091121C (en) | 1996-12-31 | 1996-12-31 | High elastic modified polypropylene material and its prepn. method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96117247A CN1091121C (en) | 1996-12-31 | 1996-12-31 | High elastic modified polypropylene material and its prepn. method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1158339A true CN1158339A (en) | 1997-09-03 |
| CN1091121C CN1091121C (en) | 2002-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96117247A Expired - Fee Related CN1091121C (en) | 1996-12-31 | 1996-12-31 | High elastic modified polypropylene material and its prepn. method |
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| CN (1) | CN1091121C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106700247A (en) * | 2016-12-02 | 2017-05-24 | 芜湖天鸿汽车零部件有限公司 | Mold material for injection molding of automobile handle and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60238341A (en) * | 1984-05-10 | 1985-11-27 | Idemitsu Petrochem Co Ltd | Polypropylene resin composition |
| DD290204A5 (en) * | 1989-12-11 | 1991-05-23 | Buna Ag | AMPLIFIED POLYPROPYLENE MOLDING |
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1996
- 1996-12-31 CN CN96117247A patent/CN1091121C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106700247A (en) * | 2016-12-02 | 2017-05-24 | 芜湖天鸿汽车零部件有限公司 | Mold material for injection molding of automobile handle and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN1091121C (en) | 2002-09-18 |
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