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| [#21] 口罩基本測試 酒精似乎會影響水的表面張力令水可穿透不織布。 |
呀金 正式會員221.xxx.xxx.152 |
2020-03-04 11:51 | |
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| [#22] 口罩基本測試 What people suggested were guidelines(heard of such before)I have to tried it. Alcohol is not ok though in theory, meltblown pp should have no reaction with isopropyl or methyl alcohol. Don't know why. There might be other binding materials other than pp alone. Ozone is ok. PP is fairly resistant to high conc. ozone gas for a fortnight. A few minutes should be ok. |
alexanderkoo 正式會員 203.xxx.xxx.139 |
2020-03-04 11:55 |
| [#23] 口罩基本測試 但中間層仲有無靜電存在點check？ ......... 我地自己check唔到，我呢個測試只係可以知道中間層是否用“噴熔不織布”，因為呢種材質是靜電過濾層，但剩番幾多靜電過濾功能不得而知。 |
呀金 正式會員 221.xxx.xxx.152 |
2020-03-04 11:57 |
| [#24] 口罩基本測試 一日未中招，個口罩都係無問題~ |
raywong777 正式會員 218.xxx.xxx.152 |
2020-03-04 11:58 |
| [#25] 口罩基本測試 但剩番幾多靜電過濾功能不得而知。＞＞ 用碎廁纸或毛應可試倒 |
winning7 正式會員 219.xxx.xxx.46 |
2020-03-04 15:17 |
| [#26] 口罩基本測試 口罩乾了，剛再倒水測試，正常，之後在底部噴些少酒精，水馬上穿過三層結構流光了。 想知酒精只是令水的張力消失，還是會破壞口罩防水能力，只要再用酒精噴口罩大一點面積，等它乾了之後再進行防水測測，就知酒精會否徹底破壞口罩防水功能。 |
呀金 正式會員 221.xxx.xxx.152 |
2020-03-04 15:33 |
| [#27] 口罩基本測試 I did make a search on mfy of meltblown pp,purely use air via fine nozzle to form such layer. No other material added. I believe that it was a change in physical properties wrt capillary action or electrostatic force. Or simply absorbing alcohol and expanded. Alcohol wipe is of pp and alcohol, so must be a good absorbent. Not exactly chemical reaction due to resistance to alcohol,in general. So, Yuen Chau was partially correct in steaming though performance couldn't be checked ? Already mentioned autoclave was used for disinfection, depending on type of material being sterilized. I was open minded in every means unless facts were received to the contrary. 最後修改時間: 2020-03-04 15:48:34 |
alexanderkoo 正式會員 203.xxx.xxx.139 |
2020-03-04 15:43 |
| [#28] 口罩基本測試 口罩乾了，剛再倒水測試，正常 ＞＞ 口罩乾了回復正常阻水.....我睇過片, 同意 |
winning7 正式會員 219.xxx.xxx.46 |
2020-03-04 16:56 |
| [#29] 口罩基本測試 [#24] 就算中咗招，都唔代表口罩有問題。 |
bankguy 正式會員 120.xxx.xxx.26 |
2020-03-04 17:22 |
| [#30] 口罩基本測試 I suspect the water content in 70% alcohol has caused the problem with the pp. Also coincides with finding after steaming the mask, then dried. Can try 99% isopropyl alcohol. 最後修改時間: 2020-03-04 18:51:35 |
alexanderkoo 正式會員 203.xxx.xxx.139 |
2020-03-04 18:49 |
| [#31] 口罩基本測試 大面積噴完酒精，一晚風乾後，防水能力似乎是沒有被嚴重破壞。  |
呀金 正式會員 221.xxx.xxx.152 |
2020-03-05 17:20 |
| [#32] 口罩基本測試 This matches with my expectations and explains other findings. But for immediate use after alcohol spraying, there is a situation. If so, better use 99% though shorter time for disinfection due to high evaporation rate. Still got some leftover not yet diluted. Of course, no guarantees on bfe or pfe etc. 最後修改時間: 2020-03-05 17:58:20 |
alexanderkoo 正式會員 203.xxx.xxx.139 |
2020-03-05 17:57 |
| [#33] 口罩基本測試 金兄, 試左塊melt blown ...距2cm 既廁紙碎一野吸左埋去....係有些少吸力 |
winning7 正式會員 219.xxx.xxx.46 |
2020-03-05 20:58 |
| [#34] 口罩基本測試 winning7 兄 我那個俾我玩咗2日，差不多殘晒嘅口罩，本來已經掉咗入垃圾桶，而家執番上來試靜電。 也証明係得嘅，可以吸到廁紙碎。  |
呀金 正式會員 221.xxx.xxx.152 |
2020-03-05 21:14 |
| [#35] 口罩基本測試 不如唔好再搞個舊口罩啦，快啲扔咗佢啦。 慢下手，個罩係沾染咗啲唔知乜菌在外層或中間層，原本你一早扔咗個罩就冇事，但係你將佢搞來搞去，係有機會出事的。 |
Neontetra 正式會員 219.xxx.xxx.118 |
2020-03-05 21:28 |
| [#36] 口罩基本測試 個口罩隔離咗14日我先敢玩。＞_＜ |
呀金 正式會員 221.xxx.xxx.152 |
2020-03-05 21:29 |
| [#37] 口罩基本測試 有報告話個武肺生存率條尾至長，有啲去到成廿幾卅十日。同時沾染到嘅可能係其他pathogens。 最後修改時間: 2020-03-05 21:36:11 |
Neontetra 正式會員 219.xxx.xxx.118 |
2020-03-05 21:35 |
| [#38] 口罩基本測試 掉咗喇，無咩好再測試了，基本嘢已經試完。昨晚蒸完已經消了毒，再噴完酒精，今日試咩都安全，風險只係之前仍未消毒的測試。 |
呀金 正式會員 221.xxx.xxx.152 |
2020-03-05 21:43 |
| [#39] 口罩基本測試 金師兄，其實測試口罩好矛盾，大家一方面講口罩要幾高規格先可以防病毒，另一方面想試重複用有冇效用，但係自己做嘅任何測試其實都唔合規格，冇可能試倒微細particles穿透率，結果只係心理上或者安心一啲。我用到咁上下存貨就會去買幾個可以重用嘅布口罩，加兩層紙巾，主要防止萬一我帶毒唔會噴到周圍係。 |
t4456 會員 119.xxx.xxx.152 |
2020-03-05 21:57 |
| [#40] 口罩基本測試 我知道普通人做唔到詳細測試，所以我都只係試基本嘢，例如防不防水，中間層是否真係有用噴溶不織布等等，看看它是否假口罩黑心口罩而已。 |
呀金 正式會員 221.xxx.xxx.152 |
2020-03-05 22:05 |
