CN105273305A - Preparation method of toughening polypropylene composition - Google Patents
Preparation method of toughening polypropylene composition Download PDFInfo
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- CN105273305A CN105273305A CN201410359855.3A CN201410359855A CN105273305A CN 105273305 A CN105273305 A CN 105273305A CN 201410359855 A CN201410359855 A CN 201410359855A CN 105273305 A CN105273305 A CN 105273305A
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- polypropene composition
- toughening modifying
- toughner
- polypropylene
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Abstract
The invention provides a preparation method of a toughening polypropylene composition. The composition is prepared from the following components: 59-99.6% of PP, 0-20% of a rubber or thermoplastic elastomer toughing agent, 0-10% of an inorganic rigid toughing agent, 0.1-1% of an anti-oxidant, 0.1-5% of a surface modifier, and 0.1-5% of white oil. The preparation method comprises the following steps: polypropylene granules and various needed additives are weighed according to the weight percentages of the raw materials, the raw materials are added into a high speed mixer for 3-10 times of high speed stirring, wherein 8-10 minutes each time. Temperature of a double screw extruder is set at 170-200 DEG C, batches of mixed materials are added into the double screw extruder for fusion and plasticization. The toughing agent and additives in the PP system are used for improving low temperature impact performance of the plastic product, improve the low temperature impact performance of the polypropylene composition, and has a low influence for other mechanical properties.
Description
Technical field
The present invention relates to technical field of polymer materials, specifically a kind of preparation method of polypropene composition of toughening modifying.
Background technology
Polypropylene (PP) is the macromolecular compound obtained by propylene polymerization.Due to its abundant raw material, synthesis technique is fairly simple, and compared with other general-purpose thermoplastic plastics, PP has that relative density is little, price is low, processibility is good and the feature such as over-all properties is better.Its yield strength, tensile strength, surface hardness and Young's modulus are all more excellent, and have outstanding stress cracking resistance and wear resistance.Thus be widely used in many-sides such as automotive industry, household electrical appliance, building trades.But PP also exists the shortcomings such as low temperature brittleness, poor toughness and mechanical property are lower, molding shrinkage is large, be greatly limited when therefore using as structured material on applying.In order to expand the range of application of PP and reduce costs, the modification must carrying out to a certain degree to PP.
In order to improve the deficiency in PP performance, elastic body toughening modification is regarded as the most effective approach always.Although ethylene-propylene diene copolymer (EPDM) has good toughening effect to PP, EPDM price is high at present, and commercial sources mostly is block, and broken glue has certain difficulty, and mobility is also not ideal; Have color by EPDM itself, product is difficult to obtain bright outward appearance simultaneously.The appearance of POE, makes it for having the incomparable advantage of conventional elastomer in the toughening modifying of PP.POE Toughened PP not only can overcome the deficiency of EPDM Toughened PP, but also gives the features such as the higher impact property of PP, high transparent, high thermally-stabilised, high-performance/cost ratio.
During the toughening material of elastomerics as resin, while toughness reinforcing, the inflexible target such as tensile strength, flexural strength is significantly declined.In order to make up the loss of rigidity, need add rigid filled as calcium carbonate, talcum powder and mica powder etc. in formula; Using rigid material toughened plastics, is a kind of brand-new method of modifying just developed in 20 end of the centurys.It is while raising composite impact performance, and do not reduce its tensile strength and rigidity, processing fluidity and thermotolerance also have raising in various degree.The method of modifying of a kind of " making the best of both worlds ", namely while increasing substantially composite material toughness, other original premium propertiess of matrix material are increased or fall very little.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of polypropene composition of toughening modifying, the goods enabling it produce have good shock resistance at low temperatures, and other mechanical propertys do not have much affect.Thus said composition application industrially can be met.
To achieve these goals, the technical solution adopted in the present invention is:
A preparation method for the polypropene composition of toughening modifying, its each components based on weight percentage is calculated as follows:
PP：59％～99.6％
Thermoplastic elastic body toughner: 0 ~ 20%
Inorganic rigid toughner: 0 ~ 10%
Antioxidant: 0.1 ~ 1%
Surface-modifying agent: 0.1 ~ 5%
White oil: 0.1 ~ 5%
Above-mentioned PP is one or more in Co-polypropylene or homo-polypropylene resin.The melt flow rate (MFR) (MFR) of Co-polypropylene is 10 ~ 80g/10min, and its Izod notched impact strength is not less than 5KJ/m
2(23 DEG C), homo-polypropylene melt flow rate (MFR) is 5 ~ 80g/10min, and its Izod notched impact strength is not less than 3KJ/m
2(23 DEG C).
Above-mentioned thermoplastic elastic body toughner is one or several in the segmented copolymer (SBS) of terpolymer EP rubber (EPDM), vinylbenzene and divinyl, ethylene-propylene rubber(EPR) (EPR) and polyolefin elastomer (POE).
Above-mentioned inorganic rigid toughner is CaC0
3, talcum powder, kaolin, mica, wollastonite, BaSO
4in one or several.
Above-mentioned antioxidant is a kind of chemical assistant suppressing in high temperature working processes and delay polymer materials oxidation and degraded.Available oxidation inhibitor is resistance phenols, amine, sulfolipins etc.The oxidation inhibitor of prioritizing selection has one or more in 2,6 ditertiary butyl p cresol, 2,4,6-tri-butyl-phenols composite.
Above-mentioned surface-modifying agent is one or several in stearic acid, Aluminate, sodium stearate, titante coupling agent and aluminate coupling agent.
The preparation method of the polypropene composition of above-mentioned a kind of toughening modifying, comprises the steps:
(1) raw material mixing: polypropylene granules and various required additive are taken by the weight percent of constitutive material, then adds high-speed mixer high speed and stir 3 ~ 10 times, each 8 ~ 10 minutes.
(2) fusion plastification: setting twin screw extruder temperature is 170 ~ 200 DEG C, and the material mixed is added fusion plastification in twin screw extruder in batches.
Compared with prior art, the invention has the beneficial effects as follows: the present invention adopts and in PP system, adds thermoplastic elastic body toughner, inorganic rigid plasticized modifier and additive to improve the low temperature impact properties of plastics, preparation method's technique is simple, both improve the low temperature impact properties of polypropene composition, simultaneously very little on the impact of its other mechanical property.
Embodiment
Technical scheme is further illustrated below in conjunction with specific embodiment.
Embodiment 1:
The preparation method of the polypropene composition of toughening modifying, composition each constituent mass percentage ratio proportioning is as shown in table 1.
| Material name | Weight percent (%) |
| Acrylic resin | 86.5 |
| Thermoplastic elastic body toughner | 0 |
| Inorganic rigid toughner | 6.0 |
| Antioxidant | 0.5 |
| Surface-modifying agent | 4.0 |
| White oil | 3.0 |
The preparation method of the polypropene composition of the toughening modifying of the present embodiment, its preparation method is as follows:
Weigh up by the raw material dosage per-cent described in table 1, then high-speed mixer high speed stirs 3 ~ 10 times, each 8 ~ 10 minutes.Setting twin screw extruder temperature is 170 ~ 200 DEG C, and the material mixed is added fusion plastification in twin screw extruder in batches.
The detected result of the polypropene composition of the toughening modifying of the present embodiment is as shown in table 7.
Embodiment 2:
The preparation method of the polypropene composition of toughening modifying, its composition each constituent mass percentage ratio proportioning is as shown in table 2.
| Material name | Weight percent (%) |
| Acrylic resin | 82.5 |
| Thermoplastic elastic body toughner | 4.0 |
| Inorganic rigid toughner | 6.0 |
| Antioxidant | 0.5 |
| Surface-modifying agent | 4.0 |
| White oil | 3.0 |
The preparation method of the polypropene composition of the toughening modifying of the present embodiment, its preparation method is as embodiment 1.
The detected result of the polypropene composition of the toughening modifying of the present embodiment is as shown in table 7.
Embodiment 3:
The preparation method of the polypropene composition of toughening modifying, its composition each constituent mass percentage ratio proportioning is as shown in table 3.
| Material name | Weight percent (%) |
| Acrylic resin | 78.5 |
| Thermoplastic elastic body toughner | 8.0 |
| Inorganic rigid toughner | 6.0 |
| Antioxidant | 0.5 |
| Surface-modifying agent | 4.0 |
| White oil | 3.0 |
The preparation method of the polypropene composition of the toughening modifying of the present embodiment, its preparation method is as embodiment 1.
The detected result of the polypropene composition of the toughening modifying of the present embodiment is as shown in table 7.
Embodiment 4:
The preparation method of the polypropene composition of toughening modifying, its composition each constituent mass percentage ratio proportioning is as shown in table 4.
| Material name | Weight percent (%) |
| Acrylic resin | 76.5 |
| Thermoplastic elastic body toughner | 10 |
| Inorganic rigid toughner | 6.0 |
| Antioxidant | 0.5 |
| Surface-modifying agent | 4.0 |
| White oil | 3.0 |
The preparation method of the polypropene composition of the toughening modifying of the present embodiment, its preparation method is as embodiment 1.
The detected result of the polypropene composition of the toughening modifying of the present embodiment is as shown in table 7.
Embodiment 5:
The preparation method of the polypropene composition of toughening modifying, its composition each constituent mass percentage ratio proportioning is as shown in table 5.
| Material name | Weight percent (%) |
| Acrylic resin | 71.5 |
| Thermoplastic elastic body toughner | 15.0 |
| Inorganic rigid toughner | 6.0 |
| Antioxidant | 0.5 |
| Surface-modifying agent | 4.0 |
| White oil | 3.0 |
The preparation method of the polypropene composition of the toughening modifying of the present embodiment, its preparation method is as embodiment 1.
The detected result of the polypropene composition of the toughening modifying of the present embodiment is as shown in table 7.
Embodiment 6:
The preparation method of the polypropene composition of toughening modifying, its composition each constituent mass percentage ratio proportioning is as shown in table 6.
| Material name | Weight percent (%) |
| Acrylic resin | 66.5 |
| Thermoplastic elastic body toughner | 20 |
| Inorganic rigid toughner | 6 |
| Antioxidant | 0.5 |
| Surface-modifying agent | 4.0 |
| White oil | 3.0 |
The preparation method of the polypropene composition of the toughening modifying of the present embodiment, its preparation method is as embodiment 1.
The detected result of the polypropene composition of the toughening modifying of the present embodiment is as shown in table 7.
| Performance index | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| Tensile strength/MPa | 26.1 | 25.8 | 25.6 | 24.8 | 24.1 | 25.3 |
| Flexural strength/MPa | 34.0 | 31.0 | 29.6 | 29.0 | 28.9 | 28.5 |
| Modulus in flexure/MPa | 2000 | 1570 | 1510 | 1480 | 1540 | 1380 |
| Izod breach/J/m | 230.0 | 232.1 | 236.8 | 240.1 | 202.3 | 180.0 |
| Shock strength/J/m | 36.0 | 38.5 | 40.1 | 42.9 | 45.4 | 37.0 |
Claims (7)
1. a preparation method for the polypropene composition of toughening modifying, is characterized in that, each components based on weight percentage is calculated as follows:
PP：59％～99.6％
Thermoplastic elastic body toughner: 0 ~ 20%
Inorganic rigid toughner: 0 ~ 10%
Antioxidant: 0.1 ~ 1%
Surface-modifying agent: 0.1 ~ 5%
White oil: 0.1 ~ 5%.
2. the preparation method of the polypropene composition of toughening modifying according to claim 1, is characterized in that, above-mentioned PP is one or more in Co-polypropylene or homo-polypropylene resin.The melt flow rate (MFR) (MFR) of Co-polypropylene is 10 ~ 80g/10min, and its Izod notched impact strength is not less than 5KJ/m
2(23 DEG C), homo-polypropylene melt flow rate (MFR) is 5 ~ 80g/10min, and its Izod notched impact strength is not less than 3KJ/m
2(23 DEG C).
3. the preparation method of the polypropene composition of toughening modifying according to claim 1, it is characterized in that, above-mentioned thermoplastic elastic body toughner is one or several in the segmented copolymer (SBS) of terpolymer EP rubber (EPDM), vinylbenzene and divinyl, ethylene-propylene rubber(EPR) (EPR) and polyolefin elastomer (POE).
4. the preparation method of the polypropene composition of toughening modifying according to claim 1, is characterized in that, above-mentioned inorganic rigid toughner is CaC0
3, talcum powder, kaolin, mica, wollastonite, BaSO
4in one or several.
5. the preparation method of the polypropene composition of toughening modifying according to claim 1, is characterized in that, above-mentioned antioxidant is a kind of chemical assistant suppressing in high temperature working processes and delay polymer materials oxidation and degraded.Available oxidation inhibitor is resistance phenols, amine, sulfolipins etc.The oxidation inhibitor of prioritizing selection has one or more in 2,6 ditertiary butyl p cresol, 2,4,6-tri-butyl-phenols composite.
6. the preparation method of the polypropene composition of toughening modifying according to claim 1, is characterized in that, above-mentioned surface-modifying agent is one or several in stearic acid, Aluminate, sodium stearate, titante coupling agent and aluminate coupling agent.
7. the preparation method of the polypropene composition of toughening modifying according to claims 1 to 6, is characterized in that, the preparation method of the polypropene composition of above-mentioned a kind of toughening modifying, comprises the steps:
(1) raw material mixing: polypropylene granules and various required additive are taken by the weight percent of constitutive material, then adds high-speed mixer high speed and stir 3 ~ 10 times, each 8 ~ 10 minutes.
(2) fusion plastification: setting twin screw extruder temperature is 170 ~ 200 DEG C, and the material mixed is added fusion plastification in twin screw extruder in batches.
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|---|---|---|---|
| CN201410359855.3A CN105273305A (en) | 2014-07-25 | 2014-07-25 | Preparation method of toughening polypropylene composition |
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|---|---|---|---|
| CN201410359855.3A CN105273305A (en) | 2014-07-25 | 2014-07-25 | Preparation method of toughening polypropylene composition |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106243516A (en) * | 2016-08-03 | 2016-12-21 | 柏力开米复合塑料(昆山)有限公司 | The Pulvis Talci of a kind of high flowing high-impact strengthens PP material and preparation method |
| CN108384115A (en) * | 2018-03-15 | 2018-08-10 | 苏州市和好塑业有限公司 | A kind of high temperature resistant anti-freezing packing box and preparation method thereof |
| CN112409683A (en) * | 2020-10-10 | 2021-02-26 | 江苏弗斯特塑胶有限公司 | Impact-resistant polypropylene particles and preparation method thereof |
| CN114806017A (en) * | 2022-05-20 | 2022-07-29 | 宁波金富亮塑料科技有限公司 | Biodegradable plastic capable of being regenerated and used and preparation method thereof |
-
2014
- 2014-07-25 CN CN201410359855.3A patent/CN105273305A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106243516A (en) * | 2016-08-03 | 2016-12-21 | 柏力开米复合塑料(昆山)有限公司 | The Pulvis Talci of a kind of high flowing high-impact strengthens PP material and preparation method |
| CN108384115A (en) * | 2018-03-15 | 2018-08-10 | 苏州市和好塑业有限公司 | A kind of high temperature resistant anti-freezing packing box and preparation method thereof |
| CN112409683A (en) * | 2020-10-10 | 2021-02-26 | 江苏弗斯特塑胶有限公司 | Impact-resistant polypropylene particles and preparation method thereof |
| CN114806017A (en) * | 2022-05-20 | 2022-07-29 | 宁波金富亮塑料科技有限公司 | Biodegradable plastic capable of being regenerated and used and preparation method thereof |
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