CN102532361A - Method for improving electrostatic storage performance of polypropylene - Google Patents
Method for improving electrostatic storage performance of polypropylene Download PDFInfo
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- CN102532361A CN102532361A CN2012100006954A CN201210000695A CN102532361A CN 102532361 A CN102532361 A CN 102532361A CN 2012100006954 A CN2012100006954 A CN 2012100006954A CN 201210000695 A CN201210000695 A CN 201210000695A CN 102532361 A CN102532361 A CN 102532361A
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Abstract
The invention discloses a method for improving the electrostatic storage performance of polypropylene. The method comprises the steps as follows: (1) a mixed gas comprising fluoride and nitrogen gas is prepared; (2) polypropylene granules are degreased through trichloro ethylene, are put in a reactor, and are subjected to vacuum drying, continuous nitrogen charging and vacuum pumping, so that no air exists in the reactor before reaction; (3) the temperature of the reaction is adjusted; and (4) the mixed gas comprising fluoride and nitrogen gas is led into the reactor and reacts with degreased polypropylene; and continuous vacuum pumping and nitrogen gas changing are performed after the reaction is finished so as to ensure that air is forced out, and the polypropylene granules that are processed through fluorination are taken out. The method can obviously improve the charge storage performance of polypropylene, the polypropylene granules that are processed through fluorination show obvious adsorption performance, and fluorination polyropylene fibers that are processed through wire drawing can show obvious adsorption performance to fibers. The method has the advantages of low cost and good effect, and is suitable for the modification of polypropylene.
Description
Technical field
The present invention relates to the material technology field, relate in particular to a kind of method that improves Vestolen PP 7052 static storge quality.
Background technology
Vestolen PP 7052 begins commercialization production as thermoplastic polymers in nineteen fifty-seven, is first tactic polymer.It has in thermoplastics art very widely uses, and particularly at aspects such as fiber and long filament, film extrusion, injection moulding processing, thereby it is fastest-rising main thermoplastics always.Polyacrylic high-crystallinity makes it have outstanding intensity, rigidity, thermotolerance or the like.Simultaneously, Vestolen PP 7052 also has excellent dielectric properties, and its high-frequency insulation property does not receive humidity effect.But become fragile during low temperature, not wear-resisting, the oxidative degradation that is subject to light and heat.
Polymeric film post pole body is a kind of charge storage material, has been used for fields such as static, printing, photograph, medical science, biology, transmitter.Post pole body material is tetrafluoroethylene, polyvinylidene fluoride material preferably now, but these material prices are more expensive.Vestolen PP 7052 also can be used as accumulate post pole body owing to have excellent dielectric properties, and its advantage is that price comparison is cheap, and shortcoming is that charge-storage time is short.
In the Chinese patent DB, a lot of about the technical scheme of polypropylene antistatic material, master batch, masterbatch, fabric, fiber etc. are arranged, but still do not have the patented claim part that improves Vestolen PP 7052 Charge Storage performance.
Summary of the invention
The object of the present invention is to provide a kind of low-cost method that improves Vestolen PP 7052 static storage power.
The method of the raising Vestolen PP 7052 static storge quality that the contriver provides may further comprise the steps:
(1) mixed gas of preparation fluorine gas and nitrogen;
(2) PP GRANULES is used the trieline degreasing, in the reactor drum of packing into, and vacuum-drying, inflated with nitrogen vacuumizes continuously, so that guarantee no air in the reactor drum before the reaction;
(3) conditioned reaction actuator temperature;
(4) mixed gas with above-mentioned fluorine gas and nitrogen is incorporated in the reactor drum, with the Vestolen PP 7052 reaction after the degreasing; Reaction finishes to fill continuously and vacuumizes, changes nitrogen, guarantees that air is caught up with to the greatest extent, takes out promptly to get and fluoridizes good PP GRANULES.
In above-mentioned (1) step, fluorine-containing volume(tric)fraction is 1%～100% in the mixed gas of said fluorine gas and nitrogen.
In above-mentioned (2) step, said skimming temp is 50 ℃; The said vacuum drying time is 2h.
In above-mentioned (3) step, said temperature of reactor is controlled at 0 ℃～100 ℃.
In above-mentioned (4) step, the said reaction times is 10min to 24h.
Fluorinated polypropylene particle through above-mentioned processing has than the long static storge quality of PP GRANULES.
The method that compares the static storage power: the one, after placing 24h, mix with polypropylene powder through the fluorinated polypropylene particle of above-mentioned processing; The fluorinated polypropylene particle still shows tangible absorption property, without the PP GRANULES of fluoridation then to not absorption of polypropylene powder; The 2nd, the fluorinated polypropylene particle is extruded wire drawing in 220 degree temperature forcing machines, the tangible adsorptive power of fluorinated polypropylene silk performance that makes to fiber.As a comparison, in 220 degree temperature forcing machines, extrude wire drawing with PP GRANULES, the polyacrylic fibres that makes is to the no adsorptive power of fiber.
Method of the present invention can obviously be improved Vestolen PP 7052 Charge Storage performance, and present method cost is low, effective, is applicable to MODIFICATION OF POLYPROPYLENE.
Embodiment
Embodiment 1
Prepare fluorine-containing volume(tric)fraction and be 1% the fluorine gas and the mixed gas of nitrogen; PP GRANULES is with 50 ℃ of degreasings of trieline, in the reactor drum of packing into.At 20 ℃ of following vacuum-drying 2h.Inflated with nitrogen vacuumizes continuously, guarantees that before reaction air is caught up with to the greatest extent.Temperature of reactor is transferred to 0 ℃, the mixed gas of aforementioned fluorine gas and nitrogen is incorporated in the reactor drum, reaction 10min; Reaction finishes and vacuumizes continuously, changes nitrogen, guarantees that air is caught up with to the greatest extent, takes out promptly to get and fluoridizes good PP GRANULES.The gas of extracting out feeds aqueous sodium hydroxide solution and handles.
Embodiment 2
Prepare fluorine-containing volume(tric)fraction and be 5% the fluorine gas and the mixed gas of nitrogen.PP GRANULES is with 50 ℃ of degreasings of trieline, in the reactor drum of packing into.At 20 ℃ of vacuum-drying 2h.Inflated with nitrogen vacuumizes continuously, guarantees that before reaction air is caught up with to the greatest extent.Temperature of reactor is transferred to 50 ℃, aforementioned fluorine gas and nitrogen mixture body are introduced reactor drum, reaction 60min.Reaction finishes and vacuumizes continuously, changes nitrogen, guarantees that air is caught up with to the greatest extent, takes out promptly to get and fluoridizes good PP GRANULES.The gas of extracting out feeds aqueous sodium hydroxide solution and handles.
Embodiment 3
Prepare fluorine-containing volume(tric)fraction and be 10% the fluorine gas and the mixed gas of nitrogen.PP GRANULES is with 50 ℃ of degreasings of trieline, in the reactor drum of packing into.At 20 ℃ of vacuum-drying 2h.Inflated with nitrogen vacuumizes continuously, guarantees that before reaction air is caught up with to the greatest extent.Temperature of reactor is transferred to 50 ℃, aforementioned fluorine gas and nitrogen mixture body are incorporated in the reactor drum, reacted 6 hours.Reaction finishes and vacuumizes continuously, changes nitrogen, guarantees that air is caught up with to the greatest extent, takes out promptly to get and fluoridizes good PP GRANULES.The gas of extracting out feeds aqueous sodium hydroxide solution and handles.
Embodiment 4
PP GRANULES is with 50 ℃ of degreasings of trieline, in the reactor drum of packing into.20 ℃ of vacuum-dryings 2 hours.Inflated with nitrogen vacuumizes continuously, guarantees that before reaction air is caught up with to the greatest extent.Temperature of reactor is transferred to 0 ℃, pure fluorine gas is incorporated in the reactor drum, reaction 2h.Reaction finishes and vacuumizes continuously, changes nitrogen, guarantees that air is caught up with to the greatest extent, takes out promptly to get and fluoridizes good PP GRANULES.The gas of extracting out feeds aqueous sodium hydroxide solution and handles.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction; Anyly do not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (5)
1. improve the method for Vestolen PP 7052 static storge quality, its characteristic may further comprise the steps:
(1) mixed gas of preparation fluorine gas and nitrogen;
(2) PP GRANULES is used the trieline degreasing, in the reactor drum of packing into, and vacuum-drying, inflated with nitrogen vacuumizes continuously, so that guarantee no air in the reactor drum before the reaction;
(3) conditioned reaction actuator temperature;
(4) mixed gas with above-mentioned fluorine gas and nitrogen is incorporated in the reactor drum, with the Vestolen PP 7052 reaction after the degreasing; Reaction finishes to fill continuously and vacuumizes, changes nitrogen, guarantees that air is caught up with to the greatest extent, takes out promptly to get and fluoridizes good PP GRANULES.
2. according to the described method of claim 1, it is characterized in that fluorine-containing volume(tric)fraction is 1%～100% in the mixed gas of said fluorine gas and nitrogen in (1) step.
3. according to the described method of claim 1, it is characterized in that said skimming temp is 50 ℃ in (2) step; The said vacuum drying time is 2h.
4. according to the described method of claim 1, it is characterized in that said temperature of reactor is controlled at 0 ℃～100 ℃ in (3) step.
5. according to the described method of claim 1, it is characterized in that the said reaction times is 10min to 24h in (4) step.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100006954A CN102532361A (en) | 2012-01-04 | 2012-01-04 | Method for improving electrostatic storage performance of polypropylene |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100006954A CN102532361A (en) | 2012-01-04 | 2012-01-04 | Method for improving electrostatic storage performance of polypropylene |
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| CN102532361A true CN102532361A (en) | 2012-07-04 |
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| CN2012100006954A Pending CN102532361A (en) | 2012-01-04 | 2012-01-04 | Method for improving electrostatic storage performance of polypropylene |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108912272A (en) * | 2018-07-13 | 2018-11-30 | 万华化学集团股份有限公司 | A kind of preparation method of graft modification polypropylene and graft modification polypropylene as made from it |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608024A (en) * | 2009-07-03 | 2009-12-23 | 同济大学 | Method for Improving Thermal Stability of Polypropylene Material Charge Storage |
| CN101805984A (en) * | 2009-11-25 | 2010-08-18 | 瓮福（集团）有限责任公司 | Method for improving uvioresistant performance of polypropylene flat-filament |
| CN101811367A (en) * | 2009-11-25 | 2010-08-25 | 瓮福（集团）有限责任公司 | Preparation method of ink permeation prevention pen sleeve |
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2012
- 2012-01-04 CN CN2012100006954A patent/CN102532361A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608024A (en) * | 2009-07-03 | 2009-12-23 | 同济大学 | Method for Improving Thermal Stability of Polypropylene Material Charge Storage |
| CN101805984A (en) * | 2009-11-25 | 2010-08-18 | 瓮福（集团）有限责任公司 | Method for improving uvioresistant performance of polypropylene flat-filament |
| CN101811367A (en) * | 2009-11-25 | 2010-08-25 | 瓮福（集团）有限责任公司 | Preparation method of ink permeation prevention pen sleeve |
Non-Patent Citations (1)
| Title |
|---|
| 安振连等: "氟气处理孔洞聚丙烯膜显著改善的电荷存储特性", 《物理学报》, vol. 57, no. 9, 30 September 2008 (2008-09-30), pages 5859 - 5862 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108912272A (en) * | 2018-07-13 | 2018-11-30 | 万华化学集团股份有限公司 | A kind of preparation method of graft modification polypropylene and graft modification polypropylene as made from it |
| CN108912272B (en) * | 2018-07-13 | 2023-05-30 | 万华化学集团股份有限公司 | Preparation method of grafted modified polypropylene and grafted modified polypropylene prepared by same |
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Application publication date: 20120704 |