側透爆裂 - 3C

By Queena
at 2020-02-12T14:01
at 2020-02-12T14:01
Table of Contents
簡述一下強化玻璃為什麼容易自爆
基本上跟製作過程跟添加物有關
製作的部份一般玻璃經過熱處理後基本上就是強化玻璃了
首先熱處理 是指經過加熱後以一定的速度或更快的速度冷卻來達到強化的效果
玻璃加熱後經過快速冷卻後(熱處理)
外部會產生應力層 內部產生張力層
簡單來講就是熱脹冷縮的原理
玻璃外層經過快速冷卻後產生應力層
玻璃內層冷卻速度低於外層所產生張力層
也因為這樣子應力層只要有裂痕
破壞應力層與張力層之間的平衡
強化玻璃就會自爆
不過也因為壓力的關係強化玻璃破碎時會是顆粒狀
然後玻璃的主要成分是二氧化矽 化學式SIO2
矽土融點約2000°C
純SIO2 的玻璃融點約1100°C
加工溫度約1700°C
為了降低融點所需溫度 會加入許多添加物
例如氧化硼.碳酸鈉.碳酸鉀.氧化鈣 等等
根據不同種類及用途的玻璃
會有不同種類的添加物跟添加比例
而二氧化矽主要來源是石英或砂
和上述添加物在製作過程中會產生硫化鎳
一般情況下硫化鎳 化學式NiS
在玻璃中會分為α跟β的狀態
高溫時為α-NiS 降溫時轉換為β-NiS
但是因為強化玻璃需要經過熱處理
所以高溫時又轉換回α-NiS
但是因為強化過程需要快速冷卻
導致α-NiS來不及轉換回β-NiS
就會讓α-NiS卡在強化玻璃中
並等待時機轉換回β-NiS
也就是顆粒狀的硫化鎳(大小需約0.04mm以上)
要是剛好卡在張力與應力層之間
強化玻璃就會自爆
為什麼因為硫化鎳是“熱縮冷漲”
冷卻後膨脹玻璃就爆了
一般強化玻璃自爆機率為千分之三左右
降低強化玻璃自爆率可以使用“熱浸處理”
將自爆率降至五萬分之一
(此數據源自經濟部標準檢驗局)
不過經濟部標準檢驗局滿早就有參考歐盟標準EN 14179-1
修訂CNS 2217「強化玻璃」國家標準 新增“熱浸處理”的製程 來降低強化玻璃自爆率
然後熱浸處理就是把強化玻璃再加熱
讓有瑕疵的玻璃先爆一爆
剩下好的玻璃再以正常速度降溫
不過熱浸處理也是要成本 加上玻璃先爆一波了 所以成本又貴上不少
一般要建築用的才會去做熱浸
大概4降
--
Sent from my Pixel 4 XL
○ PiTT // PHJCI
--
基本上跟製作過程跟添加物有關
製作的部份一般玻璃經過熱處理後基本上就是強化玻璃了
首先熱處理 是指經過加熱後以一定的速度或更快的速度冷卻來達到強化的效果
玻璃加熱後經過快速冷卻後(熱處理)
外部會產生應力層 內部產生張力層
簡單來講就是熱脹冷縮的原理
玻璃外層經過快速冷卻後產生應力層
玻璃內層冷卻速度低於外層所產生張力層
也因為這樣子應力層只要有裂痕
破壞應力層與張力層之間的平衡
強化玻璃就會自爆
不過也因為壓力的關係強化玻璃破碎時會是顆粒狀
然後玻璃的主要成分是二氧化矽 化學式SIO2
矽土融點約2000°C
純SIO2 的玻璃融點約1100°C
加工溫度約1700°C
為了降低融點所需溫度 會加入許多添加物
例如氧化硼.碳酸鈉.碳酸鉀.氧化鈣 等等
根據不同種類及用途的玻璃
會有不同種類的添加物跟添加比例
而二氧化矽主要來源是石英或砂
和上述添加物在製作過程中會產生硫化鎳
一般情況下硫化鎳 化學式NiS
在玻璃中會分為α跟β的狀態
高溫時為α-NiS 降溫時轉換為β-NiS
但是因為強化玻璃需要經過熱處理
所以高溫時又轉換回α-NiS
但是因為強化過程需要快速冷卻
導致α-NiS來不及轉換回β-NiS
就會讓α-NiS卡在強化玻璃中
並等待時機轉換回β-NiS
也就是顆粒狀的硫化鎳(大小需約0.04mm以上)
要是剛好卡在張力與應力層之間
強化玻璃就會自爆
為什麼因為硫化鎳是“熱縮冷漲”
冷卻後膨脹玻璃就爆了
一般強化玻璃自爆機率為千分之三左右
降低強化玻璃自爆率可以使用“熱浸處理”
將自爆率降至五萬分之一
(此數據源自經濟部標準檢驗局)
不過經濟部標準檢驗局滿早就有參考歐盟標準EN 14179-1
修訂CNS 2217「強化玻璃」國家標準 新增“熱浸處理”的製程 來降低強化玻璃自爆率
然後熱浸處理就是把強化玻璃再加熱
讓有瑕疵的玻璃先爆一爆
剩下好的玻璃再以正常速度降溫
不過熱浸處理也是要成本 加上玻璃先爆一波了 所以成本又貴上不少
一般要建築用的才會去做熱浸
大概4降
--
Sent from my Pixel 4 XL
○ PiTT // PHJCI
--
Tags:
3C
All Comments

By Megan
at 2020-02-12T19:44
at 2020-02-12T19:44

By Edward Lewis
at 2020-02-12T23:19
at 2020-02-12T23:19

By Michael
at 2020-02-15T12:59
at 2020-02-15T12:59

By Olive
at 2020-02-15T19:10
at 2020-02-15T19:10

By Ursula
at 2020-02-16T03:55
at 2020-02-16T03:55

By Selena
at 2020-02-17T18:30
at 2020-02-17T18:30

By Emily
at 2020-02-17T22:47
at 2020-02-17T22:47

By Quanna
at 2020-02-22T10:02
at 2020-02-22T10:02

By Quanna
at 2020-02-22T19:47
at 2020-02-22T19:47

By Dinah
at 2020-02-26T16:30
at 2020-02-26T16:30

By Zenobia
at 2020-02-26T17:58
at 2020-02-26T17:58

By Andy
at 2020-02-27T14:17
at 2020-02-27T14:17

By Christine
at 2020-03-01T13:10
at 2020-03-01T13:10

By Mary
at 2020-03-03T01:35
at 2020-03-03T01:35

By Megan
at 2020-03-05T01:37
at 2020-03-05T01:37

By Yuri
at 2020-03-07T15:52
at 2020-03-07T15:52

By Rebecca
at 2020-03-12T01:24
at 2020-03-12T01:24

By Kumar
at 2020-03-16T03:05
at 2020-03-16T03:05

By Zenobia
at 2020-03-21T01:55
at 2020-03-21T01:55

By Tristan Cohan
at 2020-03-25T12:40
at 2020-03-25T12:40

By Olga
at 2020-03-28T20:02
at 2020-03-28T20:02

By Leila
at 2020-04-01T05:30
at 2020-04-01T05:30

By Delia
at 2020-04-03T16:38
at 2020-04-03T16:38

By Doris
at 2020-04-06T15:10
at 2020-04-06T15:10

By Charlie
at 2020-04-07T23:49
at 2020-04-07T23:49

By Rachel
at 2020-04-08T13:38
at 2020-04-08T13:38

By Joe
at 2020-04-09T17:45
at 2020-04-09T17:45

By Una
at 2020-04-11T18:44
at 2020-04-11T18:44

By Madame
at 2020-04-13T23:34
at 2020-04-13T23:34

By Edwina
at 2020-04-18T06:14
at 2020-04-18T06:14

By Selena
at 2020-04-18T19:13
at 2020-04-18T19:13

By John
at 2020-04-19T05:02
at 2020-04-19T05:02

By Aaliyah
at 2020-04-19T14:32
at 2020-04-19T14:32

By Yuri
at 2020-04-20T08:47
at 2020-04-20T08:47

By Quanna
at 2020-04-24T02:33
at 2020-04-24T02:33

By Jacob
at 2020-04-26T17:47
at 2020-04-26T17:47

By Franklin
at 2020-04-29T07:39
at 2020-04-29T07:39

By Necoo
at 2020-05-01T10:18
at 2020-05-01T10:18

By Robert
at 2020-05-01T22:54
at 2020-05-01T22:54

By Kristin
at 2020-05-06T11:41
at 2020-05-06T11:41

By Daniel
at 2020-05-07T09:35
at 2020-05-07T09:35

By Yedda
at 2020-05-08T20:17
at 2020-05-08T20:17

By Linda
at 2020-05-12T07:56
at 2020-05-12T07:56

By Valerie
at 2020-05-15T14:25
at 2020-05-15T14:25

By Heather
at 2020-05-15T17:14
at 2020-05-15T17:14

By Sarah
at 2020-05-18T12:12
at 2020-05-18T12:12

By Dora
at 2020-05-19T04:40
at 2020-05-19T04:40

By Dora
at 2020-05-21T07:31
at 2020-05-21T07:31

By Olive
at 2020-05-23T08:22
at 2020-05-23T08:22

By John
at 2020-05-27T23:56
at 2020-05-27T23:56

By Joe
at 2020-05-28T20:26
at 2020-05-28T20:26

By Catherine
at 2020-05-31T06:29
at 2020-05-31T06:29

By Daph Bay
at 2020-05-31T22:47
at 2020-05-31T22:47

By Erin
at 2020-06-01T19:38
at 2020-06-01T19:38

By Agnes
at 2020-06-03T19:46
at 2020-06-03T19:46

By Callum
at 2020-06-04T09:31
at 2020-06-04T09:31

By Adele
at 2020-06-06T14:39
at 2020-06-06T14:39

By Eden
at 2020-06-09T06:10
at 2020-06-09T06:10

By Belly
at 2020-06-13T15:20
at 2020-06-13T15:20

By Ursula
at 2020-06-16T05:47
at 2020-06-16T05:47

By Odelette
at 2020-06-19T14:25
at 2020-06-19T14:25

By Caitlin
at 2020-06-20T17:34
at 2020-06-20T17:34

By Queena
at 2020-06-25T05:51
at 2020-06-25T05:51

By Jack
at 2020-06-29T23:08
at 2020-06-29T23:08

By Agatha
at 2020-06-30T20:14
at 2020-06-30T20:14

By Jack
at 2020-07-05T20:12
at 2020-07-05T20:12

By Kumar
at 2020-07-08T02:31
at 2020-07-08T02:31

By Audriana
at 2020-07-11T19:13
at 2020-07-11T19:13

By Christine
at 2020-07-14T17:53
at 2020-07-14T17:53

By Anonymous
at 2020-07-17T06:21
at 2020-07-17T06:21

By Necoo
at 2020-07-18T13:46
at 2020-07-18T13:46

By Edward Lewis
at 2020-07-22T13:44
at 2020-07-22T13:44

By Ingrid
at 2020-07-24T00:54
at 2020-07-24T00:54

By Barb Cronin
at 2020-07-27T11:45
at 2020-07-27T11:45

By Isla
at 2020-07-30T03:15
at 2020-07-30T03:15

By Zanna
at 2020-08-03T05:40
at 2020-08-03T05:40

By Rae
at 2020-08-06T14:11
at 2020-08-06T14:11

By Valerie
at 2020-08-07T04:00
at 2020-08-07T04:00

By Gary
at 2020-08-10T18:13
at 2020-08-10T18:13

By Charlotte
at 2020-08-12T12:34
at 2020-08-12T12:34

By Robert
at 2020-08-13T20:37
at 2020-08-13T20:37

By Lauren
at 2020-08-15T08:42
at 2020-08-15T08:42

By Hedy
at 2020-08-16T06:01
at 2020-08-16T06:01

By Ophelia
at 2020-08-19T16:58
at 2020-08-19T16:58

By Skylar Davis
at 2020-08-20T21:17
at 2020-08-20T21:17

By Blanche
at 2020-08-24T14:45
at 2020-08-24T14:45

By Daph Bay
at 2020-08-24T19:26
at 2020-08-24T19:26

By Faithe
at 2020-08-25T14:08
at 2020-08-25T14:08

By Zanna
at 2020-08-26T09:00
at 2020-08-26T09:00

By James
at 2020-08-30T16:22
at 2020-08-30T16:22

By Olive
at 2020-08-31T13:57
at 2020-08-31T13:57

By Michael
at 2020-08-31T19:27
at 2020-08-31T19:27

By Ula
at 2020-09-02T22:28
at 2020-09-02T22:28

By Genevieve
at 2020-09-07T01:05
at 2020-09-07T01:05

By Mary
at 2020-09-09T18:04
at 2020-09-09T18:04

By Skylar DavisLinda
at 2020-09-14T09:13
at 2020-09-14T09:13

By Zenobia
at 2020-09-19T08:37
at 2020-09-19T08:37

By Todd Johnson
at 2020-09-21T22:26
at 2020-09-21T22:26

By Franklin
at 2020-09-26T20:49
at 2020-09-26T20:49

By Lauren
at 2020-09-29T04:52
at 2020-09-29T04:52

By Anthony
at 2020-10-01T10:24
at 2020-10-01T10:24

By Dorothy
at 2020-10-03T02:52
at 2020-10-03T02:52

By Caitlin
at 2020-10-05T07:37
at 2020-10-05T07:37

By Irma
at 2020-10-07T06:39
at 2020-10-07T06:39

By Edward Lewis
at 2020-10-11T13:59
at 2020-10-11T13:59

By Kristin
at 2020-10-12T23:37
at 2020-10-12T23:37

By Puput
at 2020-10-15T16:23
at 2020-10-15T16:23

By Delia
at 2020-10-17T05:09
at 2020-10-17T05:09
Related Posts
3700X配B450M-pro這塊可以嗎

By Tom
at 2020-02-12T13:53
at 2020-02-12T13:53
零組件未來幾個月會有缺貨狀況嗎?

By Megan
at 2020-02-12T13:49
at 2020-02-12T13:49
酷碼CoolerMaster兩款新MATX機殼正式推出

By Lily
at 2020-02-12T12:12
at 2020-02-12T12:12
中國電腦商開炮海康威視(更新)

By Jessica
at 2020-02-12T12:09
at 2020-02-12T12:09
水冷風扇

By Agatha
at 2020-02-12T11:21
at 2020-02-12T11:21