CN110982097A - Double-side irradiation method of polytetrafluoroethylene resin - Google Patents
Double-side irradiation method of polytetrafluoroethylene resin Download PDFInfo
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- CN110982097A CN110982097A CN201911353174.5A CN201911353174A CN110982097A CN 110982097 A CN110982097 A CN 110982097A CN 201911353174 A CN201911353174 A CN 201911353174A CN 110982097 A CN110982097 A CN 110982097A
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- polytetrafluoroethylene resin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The invention discloses a double-sided irradiation method of polytetrafluoroethylene resin, which comprises the following steps: the method comprises the following steps: filling polytetrafluoroethylene resin into a special irradiation bag; step two: vacuumizing and sealing the special irradiation bag filled with the polytetrafluoroethylene resin; step three: driving the special irradiation bag filled with polytetrafluoroethylene resin to operate; step four: the electron accelerator irradiates the polytetrafluoroethylene resin for the first time, and meanwhile, the special irradiation bag filled with the polytetrafluoroethylene resin is cooled by the fan; step five: turning over the special irradiation bag filled with the polytetrafluoroethylene resin by an automatic turning device; step six: the electron accelerator irradiates the polytetrafluoroethylene resin for the second time; step seven: the method has the advantages that the dosage received by the polytetrafluoroethylene resin is uniform through double-sided radiation, the degradation effect is good, the energy consumption is low, and the energy is saved.
Description
Technical Field
The invention relates to a double-side irradiation method of polytetrafluoroethylene resin.
Background
The polytetrafluoroethylene resin is rapidly developed in the irradiation processing industry, but the technical field of irradiation processing still faces problems, the irradiation technology of only using single-side irradiation in the prior irradiation technology has limitation, the penetrating power is insufficient, the thickness of a polytetrafluoroethylene resin layer cannot be too thick, the material spreading thickness is about 2.5cm, the occupied area is large, the output of the polytetrafluoroethylene resin irradiation is greatly reduced, the dose received during the irradiation of the polytetrafluoroethylene resin is not even, the irradiation is not uniform, the degradation effect is poor, the irradiation effect is poor, and the irradiation requirement of a product is difficult to meet.
Disclosure of Invention
The invention aims to overcome the defects of uneven dosage and the like in the prior art and provide a double-side irradiation method of polytetrafluoroethylene resin.
In order to achieve the purpose, the invention is realized by the following technical scheme:
according to the invention, the polytetrafluoroethylene resin is turned over by designing the automatic turning device, the electron accelerator irradiates both the front side and the back side of the bagged polytetrafluoroethylene resin, the irradiation yield of the polytetrafluoroethylene resin is improved by 30% under the same irradiation dose, the working efficiency is greatly improved, the dose of the bagged polytetrafluoroethylene resin is uniform by double-side irradiation, the irradiation of the polytetrafluoroethylene resin is uniform, the degradation effect is good, the energy consumption is low, the energy is saved, and the productivity is improved.
A double-sided irradiation method of polytetrafluoroethylene resin comprises the following steps:
the method comprises the following steps: filling polytetrafluoroethylene resin into a special irradiation bag; the special irradiation bag is made of transparent materials, and has good penetrability and radiation resistance.
Step two: vacuumizing and sealing the special irradiation bag filled with the polytetrafluoroethylene resin by a vacuumizing machine system;
step three: the conveying device drives the special irradiation bag filled with polytetrafluoroethylene resin to operate;
step four: when the special irradiation bag filled with the polytetrafluoroethylene resin is operated to the lower part of the electron accelerator, the electron accelerator performs primary irradiation on the polytetrafluoroethylene resin, and meanwhile, the special irradiation bag filled with the polytetrafluoroethylene resin is cooled by a fan;
step five: continuously conveying the special irradiation bag filled with the polytetrafluoroethylene resin after the first irradiation forward under the driving of a conveying device, and turning over the special irradiation bag filled with the polytetrafluoroethylene resin through an automatic turning device;
step six: when the special irradiation bag filled with the polytetrafluoroethylene resin is conveyed to the position below the electron accelerator again, the electron accelerator performs secondary irradiation on the polytetrafluoroethylene resin, and meanwhile, the special irradiation bag filled with the polytetrafluoroethylene resin is cooled by a fan;
step seven: and repeating the third step to the sixth step. The number of times of repetition, that is, the number of turns, can be set according to actual conditions.
Preferably, in the fourth step, the electron accelerator irradiates the front surface of the irradiation dedicated bag filled with the polytetrafluoroethylene resin for the first time.
Preferably, in step six: and the electron accelerator performs secondary irradiation on the back surface of the irradiation special bag filled with the polytetrafluoroethylene resin.
Preferably, the temperature of the first irradiation and the second irradiation is gradually increased.
Preferably, the beam intensity of the electron accelerator is between 1 and 30mA, and the dose of the electron accelerator is between 1 and 40 kgy.
Preferably, the irradiation thickness of the electron accelerator is 3-5cm, the scanning current of the electron accelerator in the x direction is 1-5.8A, the scanning current of the electron accelerator in the y direction is 0.1-0.6A, and the under-beam velocity of the electron accelerator is 0.1-8.5 m/s.
The invention has the following beneficial effects: according to the invention, the polytetrafluoroethylene resin material is turned over by designing the automatic turning device, the electron accelerator irradiates both the front side and the back side of the bag-shaped polytetrafluoroethylene resin material, namely, the polytetrafluoroethylene resin material is irradiated on both sides, the thickness of the polytetrafluoroethylene resin material can be increased to 5cm, and the occupied area is small; the number of turns required by double-sided irradiation is greatly reduced compared with the number of turns required by single-sided irradiation, so that the irradiation yield of the polytetrafluoroethylene resin material is improved by more than 30%, the working efficiency is greatly improved, the dose received by the bag-shaped polytetrafluoroethylene resin is uniform through double-sided irradiation, the single-sided irradiation melt fingers are 5-50, and the double-sided irradiation melt fingers are 30-50, so that the irradiated polytetrafluoroethylene resin has more uniform molecular weight, good degradation effect and low energy consumption, the energy is saved, the number of repeated turns is also the number of turns, and the number of turns can be set according to the actual condition; the special irradiation bag is vacuumized by the vacuumizer, so that the polytetrafluoroethylene resin material is effectively prevented from being oxidized, and the special irradiation bag is cooled by the fan, so that the polytetrafluoroethylene resin material is prevented from being melted.
Drawings
FIG. 1 is an irradiation flow chart of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings of the specification:
as shown in fig. 1, a double-side irradiation method of polytetrafluoroethylene resin comprises the following steps:
the method comprises the following steps: filling polytetrafluoroethylene resin into a special irradiation bag; the special irradiation bag is made of transparent materials, and has good penetrability and radiation resistance.
Step two: vacuumizing and sealing the special irradiation bag filled with the polytetrafluoroethylene resin by a vacuumizing machine system;
step three: the conveying device drives the special irradiation bag filled with polytetrafluoroethylene resin to operate;
step four: when the special irradiation bag filled with the polytetrafluoroethylene resin is operated to the lower part of the electron accelerator, the electron accelerator performs primary irradiation on the polytetrafluoroethylene resin, and meanwhile, the special irradiation bag filled with the polytetrafluoroethylene resin is cooled by a fan;
step five: continuously conveying the special irradiation bag filled with the polytetrafluoroethylene resin after the first irradiation forward under the driving of a conveying device, and turning over the special irradiation bag filled with the polytetrafluoroethylene resin through an automatic turning device;
step six: when the special irradiation bag filled with the polytetrafluoroethylene resin is conveyed to the position below the electron accelerator again, the electron accelerator performs secondary irradiation on the polytetrafluoroethylene resin, and meanwhile, the special irradiation bag filled with the polytetrafluoroethylene resin is cooled by a fan;
step seven: and repeating the third step to the sixth step. The number of times of repetition, that is, the number of turns, can be set according to actual conditions.
In the fourth step, the electron accelerator irradiates the front surface of the special irradiation bag filled with the polytetrafluoroethylene resin for the first time. In the sixth step: and the electron accelerator performs secondary irradiation on the back surface of the irradiation special bag filled with the polytetrafluoroethylene resin. The temperature of the first irradiation and the second irradiation is gradually increased. The beam intensity of the electron accelerator is 1-30mA, and the dose of the electron accelerator is 1-40 kgy. The irradiation thickness of the electron accelerator is 3-5cm, the scanning current of the electron accelerator in the x direction is 1-5.8A, the scanning current of the electron accelerator in the y direction is 0.1-0.6A, and the speed of the electron accelerator under the beam is 0.1-8.5 m/s.
According to the invention, the polytetrafluoroethylene resin material is turned over by designing the automatic turning device, the electron accelerator irradiates both the front side and the back side of the bag-shaped polytetrafluoroethylene resin material, namely, the polytetrafluoroethylene resin material is irradiated on both sides, the thickness of the polytetrafluoroethylene resin material can be increased to 5cm, and the occupied area is small; the number of turns required by double-sided irradiation is greatly reduced compared with the number of turns required by single-sided irradiation, so that the irradiation yield of the polytetrafluoroethylene resin material is improved by more than 30%, the working efficiency is greatly improved, the dose received by the bag-shaped polytetrafluoroethylene resin is uniform through double-sided irradiation, the single-sided irradiation melt fingers are 5-50, and the double-sided irradiation melt fingers are 30-50, so that the irradiated polytetrafluoroethylene resin has more uniform molecular weight, good degradation effect and low energy consumption, the energy is saved, the number of repeated turns is also the number of turns, and the number of turns can be set according to the actual condition; the special irradiation bag is vacuumized by the vacuumizer, so that the polytetrafluoroethylene resin material is effectively prevented from being oxidized, and the special irradiation bag is cooled by the fan, so that the polytetrafluoroethylene resin material is prevented from being melted.
It should be noted that the above list is only one specific embodiment of the present invention. It is clear that the invention is not limited to the embodiments described above, but that many variations are possible, all of which can be derived or suggested directly from the disclosure of the invention by a person skilled in the art, and are considered to be within the scope of the invention.
Claims (6)
1. A double-sided irradiation method of polytetrafluoroethylene resin is characterized by comprising the following steps:
the method comprises the following steps: filling polytetrafluoroethylene resin into a special irradiation bag;
step two: vacuumizing and sealing the special irradiation bag filled with the polytetrafluoroethylene resin by a vacuumizing machine system;
step three: the conveying device drives the special irradiation bag filled with polytetrafluoroethylene resin to operate;
step four: when the special irradiation bag filled with the polytetrafluoroethylene resin is operated to the lower part of the electron accelerator, the electron accelerator performs primary irradiation on the polytetrafluoroethylene resin, and meanwhile, the special irradiation bag filled with the polytetrafluoroethylene resin is cooled by a fan;
step five: continuously conveying the special irradiation bag filled with the polytetrafluoroethylene resin after the first irradiation forward under the driving of a conveying device, and turning over the special irradiation bag filled with the polytetrafluoroethylene resin through an automatic turning device;
step six: when the special irradiation bag filled with the polytetrafluoroethylene resin is conveyed to the position below the electron accelerator again, the electron accelerator performs secondary irradiation on the polytetrafluoroethylene resin, and meanwhile, the special irradiation bag filled with the polytetrafluoroethylene resin is cooled by a fan;
step seven: and repeating the third step to the sixth step.
2. The double-sided irradiation method of polytetrafluoroethylene resin according to claim 1, wherein said step four comprises a first irradiation of the front surface of the irradiation exclusive bag containing polytetrafluoroethylene resin with an electron accelerator.
3. The double-sided irradiation method of polytetrafluoroethylene resin according to claim 1, wherein in step six: and the electron accelerator performs secondary irradiation on the back surface of the irradiation special bag filled with the polytetrafluoroethylene resin.
4. The double-sided irradiation method of polytetrafluoroethylene resin according to claim 1, wherein the temperature of said first irradiation and said second irradiation is gradually increased.
5. The double-sided irradiation method of polytetrafluoroethylene resin according to claim 1, wherein the beam intensity of said electron accelerator is 1-30mA, and the dose of said electron accelerator is 1-40 kgy.
6. The double-sided irradiation method of polytetrafluoroethylene resin according to claim 1, wherein said electron accelerator has an irradiation thickness of 3-5cm, a scanning current in x-direction of said electron accelerator is 1-5.8A, a scanning current in y-direction of said electron accelerator is 0.1-0.6A, and an under-beam velocity of said electron accelerator is 0.1-8.5 m/s.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911353174.5A CN110982097A (en) | 2019-12-25 | 2019-12-25 | Double-side irradiation method of polytetrafluoroethylene resin |
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| CN201911353174.5A CN110982097A (en) | 2019-12-25 | 2019-12-25 | Double-side irradiation method of polytetrafluoroethylene resin |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112976393A (en) * | 2020-12-17 | 2021-06-18 | 浙江歌瑞新材料有限公司 | Processing system and processing technology of environment-friendly micro powder |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672968A (en) * | 2012-05-07 | 2012-09-19 | 四川久远科技股份有限公司 | Method for manufacturing ultrafine powder from polytetrafluoroethylene through irradiation cracking |
| CN102896721A (en) * | 2011-07-26 | 2013-01-30 | 软控股份有限公司 | Double-sided film electron irradiation apparatus and irradiation method thereof |
| CN103191819A (en) * | 2013-04-03 | 2013-07-10 | 太仓金凯特种线缆有限公司 | Method for preparing PTFT (Polytetrafluoroethylene) ultrafine powder by electron beam combined ozone |
| CN103865081A (en) * | 2014-03-19 | 2014-06-18 | 四川大学 | Method for preparing high-molecular-weight polytetrafluoroethylene fine powder |
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- 2019-12-25 CN CN201911353174.5A patent/CN110982097A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896721A (en) * | 2011-07-26 | 2013-01-30 | 软控股份有限公司 | Double-sided film electron irradiation apparatus and irradiation method thereof |
| CN102672968A (en) * | 2012-05-07 | 2012-09-19 | 四川久远科技股份有限公司 | Method for manufacturing ultrafine powder from polytetrafluoroethylene through irradiation cracking |
| CN103191819A (en) * | 2013-04-03 | 2013-07-10 | 太仓金凯特种线缆有限公司 | Method for preparing PTFT (Polytetrafluoroethylene) ultrafine powder by electron beam combined ozone |
| CN103865081A (en) * | 2014-03-19 | 2014-06-18 | 四川大学 | Method for preparing high-molecular-weight polytetrafluoroethylene fine powder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112976393A (en) * | 2020-12-17 | 2021-06-18 | 浙江歌瑞新材料有限公司 | Processing system and processing technology of environment-friendly micro powder |
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