JP2023165575A - New method for decomposing polytetrafluoroethylene - Google Patents
New method for decomposing polytetrafluoroethylene Download PDFInfo
- Publication number
- JP2023165575A JP2023165575A JP2022084842A JP2022084842A JP2023165575A JP 2023165575 A JP2023165575 A JP 2023165575A JP 2022084842 A JP2022084842 A JP 2022084842A JP 2022084842 A JP2022084842 A JP 2022084842A JP 2023165575 A JP2023165575 A JP 2023165575A
- Authority
- JP
- Japan
- Prior art keywords
- polytetrafluoroethylene
- tin
- powder
- melting point
- difficult
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- -1 polytetrafluoroethylene Polymers 0.000 title claims abstract description 13
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 12
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 239000008188 pellet Substances 0.000 claims abstract description 6
- 239000004033 plastic Substances 0.000 claims abstract description 5
- 229920003023 plastic Polymers 0.000 claims abstract description 5
- 238000002844 melting Methods 0.000 claims abstract 3
- 230000008018 melting Effects 0.000 claims abstract 3
- 239000000843 powder Substances 0.000 claims description 6
- 150000002222 fluorine compounds Chemical class 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 2
- 229910052799 carbon Inorganic materials 0.000 claims 2
- 239000007787 solid Substances 0.000 claims 2
- 239000000956 alloy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 150000003606 tin compounds Chemical class 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 4
- 150000002013 dioxins Chemical class 0.000 abstract description 2
- 229910001128 Sn alloy Inorganic materials 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Landscapes
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
本発明は、物理的／化学的に安定し、極めて分解の難しいポリテトラフルオロエチレンの新しく、簡単な分解方法に関する。 The present invention relates to a new and simple method for decomposing polytetrafluoroethylene, which is physically/chemically stable and extremely difficult to decompose.
ポリテトラフルオロエチレンは粘度が高く、溶融時の流動性がほとんどないため、成型加工方法としては、ほとんど切削加工のみが採用される。この切削加工時に大量の削りかすが発生するが、この削りかすから生成される粉末は、ポリテトラフルオロエチレンのモールディングパウダーと物性が大きく異なるため、再利用は難しい。 Polytetrafluoroethylene has a high viscosity and almost no fluidity when melted, so cutting is the only method used for molding it. A large amount of shavings are generated during this cutting process, but the powder produced from these shavings has very different physical properties from polytetrafluoroethylene molding powder, so it is difficult to reuse it.
ポリテトラフルオロエチレンは、摂氏４００度以上に加熱することにより、極めて少量の熱分解を示すことが知られているが、耐薬品性・対候性に優れており、安定的に簡便な方法で分解／再重合することは難しい。 Polytetrafluoroethylene is known to show a very small amount of thermal decomposition when heated to over 400 degrees Celsius, but it has excellent chemical resistance and weather resistance, and can be produced stably and easily. Difficult to degrade/repolymerize.
ポリテトラフルオロエチレンの切削加工で発生した削りかすを粉末状にし、錫の粉末とよく混ぜる。混ぜた粉末を錠剤成型器で平たい円筒状のペレットに成型する。このペレットをホットプレート上で、摂氏３８０度で３０分ほど加熱する。すると、錫と、ポリテトラフルオロエチレンに含まれるフッ素が反応し、フッ素化合物の気体となり、後には炭化したペレットが残される。 The shavings generated during the cutting process of polytetrafluoroethylene are ground into powder and mixed well with tin powder. The mixed powder is formed into flat cylindrical pellets using a tablet press. The pellets are heated on a hot plate at 380 degrees Celsius for about 30 minutes. Then, the tin and the fluorine contained in polytetrafluoroethylene react to form a fluorine compound gas, leaving behind carbonized pellets.
本発明により、物理的、化学的に安定した物質であるポリテトラフルオロエチレンを一瞬で、簡単な方法で分解し、再度重合してモールディングパウダーを生成することができる。 According to the present invention, polytetrafluoroethylene, which is a physically and chemically stable substance, can be decomposed in an instant and in a simple manner, and then polymerized again to produce a molding powder.
本発明により、ポリテトラフルオロエチレンの切削加工時に大量に発生する削りかすを有効に再利用する道が開ける。また、他のプラスチック材料に適用することにより、例えばポリエチレンテレフタレートなどの燃焼時にダイオキシンを発生させる塩素を含有した高分子素材を安全に分解することができる。 The present invention makes it possible to effectively reuse the shavings generated in large quantities during the cutting process of polytetrafluoroethylene. Furthermore, by applying it to other plastic materials, it is possible to safely decompose chlorine-containing polymer materials that generate dioxins when burned, such as polyethylene terephthalate.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022084842A JP7372610B1 (en) | 2022-05-06 | 2022-05-06 | New method for decomposing polytetrafluoroethylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022084842A JP7372610B1 (en) | 2022-05-06 | 2022-05-06 | New method for decomposing polytetrafluoroethylene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP7372610B1 JP7372610B1 (en) | 2023-11-01 |
| JP2023165575A true JP2023165575A (en) | 2023-11-16 |
Family
ID=88509977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2022084842A Active JP7372610B1 (en) | 2022-05-06 | 2022-05-06 | New method for decomposing polytetrafluoroethylene |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7372610B1 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4273387B2 (en) | 2002-10-11 | 2009-06-03 | 榮松 神崎 | Detoxification treatment method for halogen-containing resin |
-
2022
- 2022-05-06 JP JP2022084842A patent/JP7372610B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP7372610B1 (en) | 2023-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mui et al. | Compensation effect during the pyrolysis of tyres and bamboo | |
| CN108467748B (en) | Comprehensive utilization method of organic resin waste | |
| JP2010106133A (en) | Process and apparatus for making waste into fuel | |
| Wang et al. | Study on the destruction process of cationic exchange resins treated by Li2CO3-Na2CO3-K2CO3 molten salt | |
| Alenezi et al. | Thermal degradation kinetics of waste printed circuit boards | |
| JP2023165575A (en) | New method for decomposing polytetrafluoroethylene | |
| CN101250315B (en) | Utilization and processing method for substrate material of waste and old printed circuit board | |
| Lin et al. | Experimental study on molten salt oxidation of high salt content pharmaceutical residue | |
| JP2011068770A (en) | Solid fuel and manufacturing method therefor | |
| Altarawneh et al. | A thermo-kinetic investigation on the thermal degradation of polyvinyl chloride in the presence of magnetite and hematite | |
| KR101307395B1 (en) | System and method for thermal decomposition of synthetic polymer waste using recycled heavy oil and recycled carbon compounds | |
| Kongkarat et al. | Utilization of waste HDPE for Sustainable EAF steelmaking: Carbon dissolution into liquid steel | |
| KR101070455B1 (en) | Method for stabilizing municipal solid waste incineration bottom ash with dry carbonation reaction | |
| FNC | Hazardous waste vitrification by plasma gasification process | |
| He et al. | Consequences of poly (vinyl chloride) presence on the thermochemical process of lignocellulosic biomass in CO2 by thermogravimetric analysis | |
| JPH0559371A (en) | Method for pyrolyzing carbonaceous material utilizing radiation | |
| Jing | DC arc plasma furnace melting of waste incinerator fly ash | |
| Han et al. | Kinetic study of PVC pyrolysis in air by Thermogravimetric analysis using the Friedman method | |
| US20220402005A1 (en) | Methods for safe disposal of mercury from mercury-contaminated waste | |
| CN108404334B (en) | Method for dechlorinating and detoxifying halogenated organic waste by using hydroxide inorganic melt | |
| Aydinli et al. | The Catalytic Effects of Potassium Dichromate on the Pyrolysis of Polymeric Mixtures Part II: Hazelnut Shell and Ultra-high Molecular Weight Polyethylene and their Blend Cases | |
| JPH10263503A (en) | Method of solidifying material to be treated and solidified material | |
| Schuberta et al. | Thermogravimetric analysis of pure and additive-commingled polypropylene | |
| FNC | Thermal Plasma Process for Hazardous Waste Treatment | |
| Smriti et al. | Role of Plasma in Disposing the Plastic Dr. Smriti, Dr. Richa |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20220728 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20230718 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20230721 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20231003 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20231005 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 7372610 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |