JP6655326B2 - Power source gas for gas gun - Google Patents
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- JP6655326B2 JP6655326B2 JP2015166826A JP2015166826A JP6655326B2 JP 6655326 B2 JP6655326 B2 JP 6655326B2 JP 2015166826 A JP2015166826 A JP 2015166826A JP 2015166826 A JP2015166826 A JP 2015166826A JP 6655326 B2 JP6655326 B2 JP 6655326B2
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- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 36
- CDOOAUSHHFGWSA-OWOJBTEDSA-N (e)-1,3,3,3-tetrafluoroprop-1-ene Chemical compound F\C=C\C(F)(F)F CDOOAUSHHFGWSA-OWOJBTEDSA-N 0.000 claims description 22
- 239000001294 propane Substances 0.000 claims description 18
- 239000000443 aerosol Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 description 74
- 238000010792 warming Methods 0.000 description 14
- 238000009834 vaporization Methods 0.000 description 10
- 230000008016 vaporization Effects 0.000 description 10
- 230000007423 decrease Effects 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000003380 propellant Substances 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 231100000647 material safety data sheet Toxicity 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
本発明は、ガスガンの圧力源として使用されるガスガン用パワーソースガスに関するものである。 The present invention relates to a power source gas for a gas gun used as a pressure source for the gas gun.
模擬銃は人に対する殺傷能力の無い銃として知られており、電動ガン、ガスガン、エアコッキングガン等があって、それぞれ様々な分野において広く用いられている。この内、ガスガンはエアソフトガンと呼ばれることもあるが、圧力源として空気を使用しているものではなく、圧力源となるガス（パワーソースガス）の主成分はエアゾール用噴射剤などとして知られるＨＦＣ１３４ａガスである。 The simulated gun is known as a gun having no human killing ability, and includes an electric gun, a gas gun, an air cocking gun, and the like, and each of them is widely used in various fields. Of these, the gas gun is sometimes called an airsoft gun, but it does not use air as a pressure source, and the main component of the gas (power source gas) serving as a pressure source is HFC134a gas known as a propellant for aerosol. It is.
ＨＦＣ１３４ａガスは1,1,1,2−テトラフルオロエタンの化学名を持つ、ハイドロフルオロカーボンの一種であり、フロン代替物質として開発された経緯を持っている。そのため、フロンと比較した場合には、地球温暖化への影響は著しく減少している。しかし、近年、地球温暖化係数（ＧＷＰ；Ｇｌｏｂａｌ Ｗａｒｍｉｎｇ Ｐｏｔｅｎｔｉａｌ）のさらに小さいガス組成物を使用することが、ガスガン用パワーソースガスについても要請される状況にある。 HFC134a gas is a kind of hydrofluorocarbon having a chemical name of 1,1,1,2-tetrafluoroethane and has been developed as a substitute for CFC. Therefore, the impact on global warming is significantly reduced as compared with CFCs. However, in recent years, there has been a demand for a power source gas for a gas gun to use a gas composition having a smaller global warming potential (GWP).
そこで、出願人会社は地球温暖化係数（ＧＷＰ）の小さいパワーソースガスを提供するために開発を進めて来た。先行技術を調査すると、噴射剤組成物に係る発明として特開２０１１−１８４５８５号が見出された。同号の発明はスプレー缶に充填される、あるいは遊戯用ガスガン内に充填される噴射剤が１２３４ｚｅとＲ３２の混合ガスからなり、前記１２３４ｚｅの重量比率が７０〜９５％でＧＷＰが２００以下であることを特徴とすると説明されている。 Accordingly, the applicant company has been developing to provide a power source gas having a small global warming potential (GWP). When the prior art was investigated, JP-A-2011-184585 was found as an invention relating to a propellant composition. In the same invention, the propellant filled in the spray can or the gas gun for play consists of a mixed gas of 1234ze and R32, and the weight ratio of the 1234ze is 70 to 95% and the GWP is 200 or less. It is described as being characterized.
上記先行技術に係る発明は、地球温暖化防止の観点からＲ１３４ａの代替となる、噴射剤組成物の提供を目標としてはいるものの 、未だ不十分と考えられる。すなわち、地球温暖化係数（ＧＷＰ）は二酸化炭素を基準とした温暖化能力を示す指標であり、先行技術に示されたＧＷＰが２００以下という数値はＨＦＣ１３４ａのＧＷＰが１４３０であるのと比較すれば減少している。しかし、上記ＧＷＰが２００という値では、ゼロエミッションという極限の目標にほど遠いといわざるを得ない。 Although the invention according to the above prior art aims at providing a propellant composition which is an alternative to R134a from the viewpoint of preventing global warming, it is still considered insufficient. That is, the global warming potential (GWP) is an index indicating the warming ability based on carbon dioxide, and the numerical value of GWP of 200 or less shown in the prior art is compared with the GWP of HFC134a of 1430. is decreasing. However, if the GWP is 200, it must be said that it is far from the ultimate target of zero emission.
本発明は前記の点に鑑みなされたもので、その課題は、地球温暖化係数（ＧＷＰ）を極限近くまで減少させることができ、かつ、ガスガンとしての性能低下を最少に抑制できるようにすることである。また、本発明の他の課題は、ガスガンを構成しているプラスチックやゴム等の材質に悪影響を及ぼすことがほとんどなく、また、他のガスよりも微燃性であるとともに、より安全性の高いガスガン用パワーソースガスを提供することである。 The present invention has been made in view of the above points, and an object of the present invention is to reduce the global warming potential (GWP) to a minimum and to minimize the reduction in performance as a gas gun. It is. Further, another object of the present invention is to hardly adversely affect the material such as plastic or rubber constituting the gas gun, is also slightly flammable than other gases, and has higher safety. The purpose is to provide a power source gas for a gas gun.
前記の課題を解決するため、本発明は、ガスガンの圧力源として使用されるガス組成物として、ＨＦＯ−１２３４ｚｅ−（Ｅ）（トランス-1,3,3,3-テトラフルオロプロペン）を主成分として、さらに、若干量の昇圧剤を含有するという手段を講じたことを特徴とするものである。 In order to solve the above-mentioned problems, the present invention provides a gas composition used as a pressure source of a gas gun, which mainly comprises HFO-1234ze- (E) (trans-1,3,3,3-tetrafluoropropene). Further, a means for containing a slight amount of a pressurizing agent is adopted.
本発明の主成分であるトランス-1,3,3,3-テトラフルオロプロペン（以下、ＨＦＯ−１２３４ｚｅと略す。）は、日本フルオロカーボン協会発行の安全データシート（ＳＤＳ、作成２０１０年７月２２日、最終改定２０１５年４月１日）によれば不燃ガスであり、外観：液化ガス、色：無色、発火点：２８８−２９３℃という物理的及び化学的性質を有している。有害性情報にも危険性は認められず、また、環境影響情報については地球温暖化係数（ＣＯ２を１．０とする１００年積分値）＜１（ＩＰＣＣ第５次レポート２０１３）のように記載されている。 Trans-1,3,3,3-tetrafluoropropene (hereinafter abbreviated as HFO-1234ze), which is a main component of the present invention, is a safety data sheet issued by the Japan Fluorocarbon Association (SDS, created July 22, 2010). According to the last revision on April 1, 2015), it is a nonflammable gas, and has physical and chemical properties such as appearance: liquefied gas, color: colorless, and ignition point: 288-293 ° C. There is no danger in the hazard information, and the environmental impact information is as shown in the global warming potential (100-year integrated value with CO 2 as 1.0) <1 (IPCC Fifth Report 2013). Has been described.
上記の特性を有するＨＦＯ−１２３４ｚｅを本発明におけるガスの主成分として使用することで、地球温暖化係数（ＧＷＰ）を課題の範囲内に保つ可能性が高められる。一方、実験を繰り返したところによると、ＨＦＯ−１２３４ｚｅ単独では、これまで使用して来たＨＦＣ１３４ａやＨＦＣ１５２ａ＋ＣＯ２などの気化圧力に及ばないことも明らかになった。気化圧力が不足する状態では弾丸の飛翔距離や弾道特性の低下という問題が起こるうえに、発射の衝撃をシミュレートするブローバックのスムーズさも損なわれる傾向となる。 By using HFO-1234ze having the above characteristics as the main component of the gas in the present invention, the possibility of keeping the global warming potential (GWP) within the range of the subject is enhanced. On the other hand, according to the place where the experiment was repeated, the HFO-1234ze alone, also became clear that not span the vaporization pressure, such as coming were HFC134a and HFC152a + CO 2 that uses far. When the vaporization pressure is insufficient, problems such as a decrease in the flight distance and trajectory characteristics of the bullet occur, and the smoothness of the blowback that simulates the impact of firing tends to be impaired.
このため、発明者はＨＦＯ−１２３４ｚｅの気化圧力を、ＨＦＣ１３４ａの気化圧力と同等にまで昇圧させる方策について探究し、その結果、若干量の昇圧剤を含有させることに想到するとともに、適切なガス種の選定と混合比について鋭意実験を行なった。混合に使用したガス種は多岐に渡り、当面の目的を達成するものを突き止めたが、少なからず問題も見られた。例えば、二酸化炭素（ＣＯ２）は目的の気化圧力を満たす上では問題ないが、分子が小さいためにパッキング等から抜け出てしまい、ＨＦＯ−１２３４ｚｅとの混合状態を維持できないという問題があった。従って、例えばＣＯ２が抜け出さない対策を講じることにより、これもまた、本発明に係るパワーソースガスの成分として利用することができる。さらに、窒素ガスについても、昇圧剤として機能することは分かっているので、これも使用可能なガスの一種であるといえる。 For this reason, the inventor searched for a measure to increase the vaporization pressure of HFO-1234ze to the same level as the vaporization pressure of HFC134a. An intensive experiment was conducted on the selection and mixing ratio. The type of gas used for the mixing was varied, and the one that achieved the immediate purpose was found, but there were not a few problems. For example, carbon dioxide (CO 2 ) has no problem in satisfying the target vaporization pressure, but has a problem that it escapes from packing or the like due to small molecules and cannot maintain a mixed state with HFO-1234ze. Thus, for example, by taking measures to prevent the escape of CO 2 , this can also be used as a component of the power source gas according to the present invention. Furthermore, since it is known that nitrogen gas also functions as a pressurizing agent, it can be said that this is also a kind of usable gas.
上記のような試行錯誤の結果、本発明に係るパワーソースガスとして最も好ましい昇圧剤は、プロパン（Ｃ３Ｈ８）であることが突き止められた。プロパンはＣＯ２と比較して二倍程度高価であり、混合ガスもやや可燃傾向になるが、プラスチックやゴムを侵さず、ＨＦＯ−１２３４ｚｅとの混合によりＨＦＣ１３４ａの気化圧力付近まで昇圧でき、また、抜け出てしまうこともない。 As a result of the trial and error as described above, it was found that the most preferable pressurizing agent as the power source gas according to the present invention was propane (C 3 H 8 ). Propane is about twice as expensive as CO 2 , and the mixed gas also tends to be slightly flammable, but does not attack plastic or rubber, and can be pressurized to near the vaporization pressure of HFC134a by mixing with HFO-1234ze. There is no escape.
混合比率は、質量比でＨＦＯ−１２３４ｚｅ−（Ｅ）（トランス-1,3,3,3-テトラフルオロプロペン）９０％以上９９．５％未満、残部プロパンから成る昇圧剤の範囲が適切である。ＨＦＯ−１２３４ｚｅが９０％未満では、プロパンが１０％を超えるので気化圧力が上昇し過ぎる傾向になり、また、９９．５％を超えると、プロパンが０．５％となるので気化圧力が十分ではない。より好ましい混合比率は、質量比でＨＦＯ−１２３４ｚｅ−（Ｅ）（トランス-1,3,3,3-テトラフルオロプロペン）９５．５％、プロパン４．５％である。プロパンが４．５％の場合は昇圧効果と可燃性等の問題のバランスが取れており、プロパンが４．５％を超えると、昇圧効果も大きくなるが、また、可燃性の問題も考慮する必要が生じる。 The mixing ratio by mass ratio of HFO-1234ze- (E) (trans-1,3,3,3-tetrafluoropropene) is 90% or more and less than 99.5%, and the range of the pressure increasing agent composed of propane is appropriate. . If the HFO-1234ze is less than 90%, the vaporization pressure tends to increase too much because propane exceeds 10%, and if it exceeds 99.5%, the vaporization pressure becomes 0.5% because propane becomes 0.5%. Absent. A more preferable mixing ratio is HFO-1234ze- (E) (trans-1,3,3,3-tetrafluoropropene) 95.5% and propane 4.5% by mass ratio. When propane is 4.5%, the balance between the boosting effect and problems such as flammability is well-balanced. When propane exceeds 4.5%, the boosting effect increases, but also considers the flammability problem. Need arises.
他方、地球温暖化係数（ＧＷＰ）について見ると、ＨＦＯ−１２３４ｚｅのそれが前記のとおり＜１であるのに対して、プロパンのそれは３である。そして、本発明におけるＨＦＯ−１２３４ｚｅに対するプロパンの混合比率は質量比で最大でも１０％にとどまるから、本発明に係るガスガン用パワーソースガスの地球温暖化係数（ＧＷＰ）はＨＦＯ−１２３４ｚｅのそれと変わらず、従って、＜１とほぼゼロに近く、極限まで減少しているといえる。 On the other hand, looking at the global warming potential (GWP), that of HFO-1234ze is <1 as described above, whereas that of propane is 3. Since the mixing ratio of propane to HFO-1234ze in the present invention is at most 10% by mass, the global warming potential (GWP) of the power source gas for a gas gun according to the present invention is not different from that of HFO-1234ze. Therefore, it can be said that <1 is almost zero, and is reduced to the limit.
本発明に係るガスガン用パワーソースガスは、質量比でＨＦＯ−１２３４ｚｅ−（Ｅ）（トランス-1,3,3,3-テトラフルオロプロペン）９５．５％、プロパン４．５％から成るガスガン用パワーソースガスであって、容器に充填され、エアゾール製品の形態にて供給される。この構成を満たすことによって、気化圧力、経済性が適切に保たれ、かつ、不燃傾向も維持された、缶入りのガスガン用パワーソースガスを提供することができる。 The power source gas for a gas gun according to the present invention is composed of 95.5% by mass ratio of HFO-1234ze- (E) (trans-1,3,3,3-tetrafluoropropene) and 4.5% by weight of propane. Power source gas, which is filled in a container and supplied in the form of an aerosol product. By satisfying this configuration, it is possible to provide a power source gas for a gas gun in a can, in which the vaporization pressure and the economy are appropriately maintained and the non-flammability is also maintained.
本発明は以上のように、地球温暖化係数（ＧＷＰ）を極限近くまで減少させることができ、かつ、ガスガンとしての性能低下を最小限度に抑制できるようになるという効果を奏する。また、本発明によれば、ガスガンを構成しているプラスチックやゴム等の材質に悪影響を及ぼすことがほとんどなく、また、他のガスよりも微燃性であるとともに、より安全性の高いガスガン用パワーソースガスを提供することができる。 As described above, the present invention has an effect that the global warming potential (GWP) can be reduced to near the limit and the performance of the gas gun can be minimized. Further, according to the present invention, there is almost no adverse effect on the material such as plastic or rubber constituting the gas gun, and it is slightly flammable than other gases and has higher safety. A power source gas can be provided.
以下、実施形態に基づいて本発明をより詳細に説明する。本発明に係るガスガン用パワーソースガスは、前述のとおりガスガンの圧力源として使用されるガス組成物であって、ＨＦＯ−１２３４ｚｅ−（Ｅ）（トランス-1,3,3,3-テトラフルオロプロペン）を主成分として、若干量の昇圧剤を含有することを特徴とする。 Hereinafter, the present invention will be described in more detail based on embodiments. The power source gas for a gas gun according to the present invention is a gas composition used as a pressure source of a gas gun as described above, and includes HFO-1234ze- (E) (trans-1,3,3,3-tetrafluoropropene). ) As a main component and a small amount of a pressurizing agent.
この実施形態において、ガスガン用パワーソースガスは、質量比でＨＦＯ−１２３４ｚｅ−（Ｅ）（トランス-1,3,3,3-テトラフルオロプロペン）９０％以上９９．５％未満、残部プロパンから成る。以下、実施例を比較例と共に示す。 In this embodiment, the power source gas for a gas gun is composed of 90% or more and less than 99.5% of HFO-1234ze- (E) (trans-1,3,3,3-tetrafluoropropene) by mass, and the balance being propane. . Hereinafter, Examples are shown together with Comparative Examples.
＜実施例１＞
＜実施例２＞
＜比較例＞
＜圧力測定＞
＜相溶性＞
ＨＦＯ−１２３４ｚｅ／プロパン充填割合９５．５％／４．５％で相溶性良好であった。また、プロパン２〜２０％の範囲で試験したところ、これも相溶性は全て良好であった。
・考察
上記ＨＦＯ−１２３４ｚｅ／プロパン充填割合９５．５％／４．５％でエアゾールを試作して圧力を測定したところ、ＨＦＣ１３４ａを用いて同様に試作したエアゾールと同等の気化圧力が得られたことを確認した。高圧ガス保安法においてＨＦＯ−１２３４ｚｅ／プロパン充填割合９５．５％／４．５％の混合ガスはエアゾールと見なされるため、３５℃における圧力がエアゾール実測で０．８０ＭＰａ未満であることが条件になる。よって、プロパン１０％の実施例２では圧力が上記の条件を超えることになるが、その他の点では本発明の課題を満たしている。
<Compatibility>
The compatibility was good at an HFO-1234ze / propane filling ratio of 95.5% / 4.5%. When tested in the range of propane 2 to 20%, the compatibility was all good.
・ Consideration When the aerosol was prototyped with the above HFO-1234ze / propane filling ratio of 95.5% / 4.5% and the pressure was measured, the vaporization pressure equivalent to that of the aerosol prototyped similarly using HFC134a was obtained. It was confirmed. In the High Pressure Gas Safety Law, a mixed gas of HFO-1234ze / propane filling ratio of 95.5% / 4.5% is regarded as an aerosol, so that the pressure at 35 ° C. must be less than 0.80 MPa as measured by aerosol. . Therefore, in Example 2 in which propane is 10%, the pressure exceeds the above-mentioned condition, but in other respects, the object of the present invention is satisfied.
上記実施例のパワーソースガスをガスガンに充填して様々な実験を行なった。そこで、弾丸飛翔距離について実験結果を示す。使用した銃及び弾丸等は以下のとおりである。
ガン：出願人会社製ハンドガン型ガスガン
弾丸：出願人会社製ＢＢ弾、直径６．０ｍｍ、平均重量０．２ｇｒ
Various experiments were conducted by filling the gas gun with the power source gas of the above embodiment. Therefore, experimental results are shown for the bullet flight distance. The used guns and bullets are as follows.
Gun: Handgun type gas gun bullet made by applicant company: BB bullet made by applicant company, diameter 6.0 mm, average weight 0.2 gr
＜表１−１＞気温１０℃
＜表１−２＞気温２０℃
＜表１−３＞気温４０℃
さらに、異なるタイプの銃に関する実験結果を示す。使用した銃及び弾丸等は以下のとおりである。
ガン：出願人会社製ショットガン型ガスガン
このガスガンは同時に３発又は６発の弾丸を発射できる銃であるが、実験は３発発射を選択して行なった。使用した弾丸は前記と同じく、出願人会社製ＢＢ弾、直径６．０ｍｍ、平均重量０．２ｇｒである。
In addition, experimental results for different types of guns are shown. The used guns and bullets are as follows.
Gun: Shotgun-type gas gun manufactured by the applicant company This gas gun is a gun that can fire three or six bullets at the same time, but the experiment was carried out by selecting three shots. The bullet used was the same as above, BB bullet made by the applicant company, diameter 6.0 mm, average weight 0.2 gr.
＜表２−１＞気温１０℃
＜表２−２＞気温２０℃
＜表２−３＞気温４０℃
上記の実験結果から、本発明に係るガスガン用パワーソースガスは、従来から用いられて来たＨＦＣ１３４ａガス（1,1,1,2−テトラフルオロエタン）と比較して十分な弾丸飛翔距離を得ることができることが分かる。また、飛翔距離低下は最大でも２０%未満であり、この程度の差であれば、例えば、ガスガン本体の発射ガス量の増減や、ＢＢ弾に回転を与えて飛翔距離を変化させるホップアップ機能の調節などによって補うことができる範囲である。従って、本発明に係るガスガン用パワーソースガスは弾丸の飛翔距離やブローバック動作等の性能において、ガスガンにおける、従来のＨＦＣ１３４ａガスと同等の効果を発揮するものであるとともに、本発明に係るガスガン用パワーソースガスの地球温暖化係数（ＧＷＰ）は前記のとおり＜１であり、極限近くに減少している。このように、本発明によれば、従来のパワーソースガスに完全に置き換えられ、かつ、地球温暖化の問題にも十分に対応したガスガン用パワーソースガスが提供される。 From the above experimental results, the power source gas for a gas gun according to the present invention obtains a sufficient projectile distance compared with the conventionally used HFC134a gas (1,1,1,2-tetrafluoroethane). We can see that we can do it. In addition, the decrease in the flight distance is less than 20% at the maximum, and if this difference is such a difference, for example, the hop-up function that changes the flight distance by rotating the BB bullet by increasing or decreasing the amount of gas emitted from the gas gun body. This is a range that can be compensated by adjustment or the like. Therefore, the power source gas for a gas gun according to the present invention exerts the same effect as the conventional HFC134a gas in a gas gun in the performance such as the flying distance of a bullet and blowback operation, and the gas source according to the present invention. The global warming potential (GWP) of the power source gas is <1 as described above, and has decreased to the limit. As described above, according to the present invention, there is provided a power source gas for a gas gun which is completely replaced with a conventional power source gas and sufficiently copes with the problem of global warming.
Claims (2)
前記ガス組成物は、ガスガンの圧力源として使用したときに、気温１０度ｃにおける飛翔距離は、従来のＨＦＣ１３４ａガスに比して、２０パーセント未満の低下にとどめるために、質量比でＨＦＯ−１２３４ｚｅ−（Ｅ）（トランス-1,3,3,3-テトラフルオロプロペン）９５．５％、プロパン４．５％から成るガスガン用パワーソースガス。 A gas composition used as a pressure source for a gas gun,
When the gas composition is used as a pressure source for a gas gun, the flight distance at a temperature of 10 ° C. is less than 20% lower than that of the conventional HFC134a gas, so that the flight distance is reduced by a mass ratio of HFO-1234ze. -(E) (trans-1,3,3,3-tetrafluoropropene) a power source gas for gas guns comprising 95.5% and propane 4.5%.
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