| 談天說地主旨 ﹝請按主旨作出回應﹞ 上頁 首頁 | 寄件者 | 傳送日期
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| [#41] 口罩基本測試 老實講，就算N95都只係保証過濾至少95%而已。 戴口罩只係降低風險而不是絕對安全，人人戴口罩就令社會整體感染率降低，病毒散播得無咁嚴重，醫療系統壓力亦細啲。 |
呀金 正式會員221.xxx.xxx.152 |
2020-03-05 22:15 | |
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| [#42] 口罩基本測試 金師兄你講得啱，極端防疫同common sense要有個平衡點，高規格物資我覺得要留比醫療人員，普通規格就分下比清潔工人。我之前買咗幾箱都算炒價貨派咗一半仲會繼續派，自己有兩個月+兩盒emergency supply就算，唔驚得咁多。 |
t4456 會員 119.xxx.xxx.152 |
2020-03-05 22:23 |
| [#43] 口罩基本測試 師兄確係好心人。 我也希望大家都買到真口罩，唔好被人欺騙買咗假嘢，其它只好聽天由命，無得強求。 |
呀金 正式會員 221.xxx.xxx.152 |
2020-03-05 22:30 |
| [#44] 口罩基本測試 #34 個口罩蒸過都仲有靜電? |
唔係阿化 正式會員 49.xxx.xxx.148 |
2020-03-06 00:38 |
| [#45] 口罩基本測試 #44 係仲有靜電，但唔知蒸與唔蒸有沒有分別。 |
呀金 正式會員 221.xxx.xxx.152 |
2020-03-06 00:43 |
| [#46] 口罩基本測試 據知melt blown既靜電係永久的....但加熱蒸過會扭曲纖維...令孔變大细不一, 令病毒比之前更易穿過... 最後修改時間: 2020-03-06 08:23:09 |
winning7 正式會員 219.xxx.xxx.46 |
2020-03-06 08:17 |
| [#47] 口罩基本測試 In general pp's melting point is 160 C. The effect of elasticity of meltblown pp at 100 C is unknown, at least to me. A sample can be sent to Nelson labs. for analysis but at high cost. Anyway, steaming or alcohol treatment was not as bad as thought. Need further proof. https://www.nelsonlabs.com/testing/bacterial-viral-filtration-efficiency-bfe-vfe/ 最後修改時間: 2020-03-06 09:29:33 |
alexanderkoo 正式會員 45.xxx.xxx.50 |
2020-03-06 09:22 |
| [#48] 口罩基本測試 我又想問下近排雨毛毛, 或多或少都會整濕個口罩, 咁個口罩外層防水能力有無影響 ? |
kenneth288 正式會員 61.xxx.xxx.18 |
2020-03-06 11:08 |
| [#49] 口罩基本測試 I think drizzle should be ok. The tests conducted so far were pouring water onto masks, more vigorous.Two different things. Similar for watch,water resistant is different from water tight. 最後修改時間: 2020-03-06 11:28:01 |
alexanderkoo 正式會員 45.xxx.xxx.50 |
2020-03-06 11:25 |
| [#50] 口罩基本測試 Polypropylene is commonly used as microwave food container, so 100 C is anything high temp., only degradation with time. Melting point is 160 C and is elevated by 100 C (viz 260C) to form a pool of liquid before blowing in die for making meltblown pp. So, the remaining concern is electrostatic charge. Just for fact finding, I won't steam mask, steaming wild caught fish is more rewarding. |
alexanderkoo 正式會員 45.xxx.xxx.184 |
2020-03-06 13:34 |
| [#51] 口罩基本測試 |
winning7 正式會員 219.xxx.xxx.46 |
2020-03-06 13:43 |
| [#52] 口罩基本測試 我哋上網買的以色列口罩 有一款平的看起來較薄同透明，帶上也比較透氣 好似好流咁 但做過測試十幾分鐘也未漏水 中間層燒過也無問題 |
Kelvinzy 正式會員 202.xxx.xxx.40 |
2020-03-06 14:25 |
| [#53] 口罩基本測試 吹乾了  |
minipod 正式會員 119.xxx.xxx.91 |
2020-03-06 21:24 |
