Ta yaya zafin bazuwar da rabin rayuwar peroxide crosslinking jamiái za a daidaita tare da curing tsari taga don Teflon tef?

I. Core Data: Half-Life Parameters na BPO da DCP

1. Maganar Zazzabi Rabin Rayuwa

Peroxide crosslinking agents suna bin tsarin bazuwar kinetics na farko, tare da rabin rayuwa (t₁/₂) a yanayin da aka ba da ita shine alamar da aka saba amfani da ita.

Benzoyl peroxide (BPO): rabin rayuwa na minti 1 a kusan. 131°C, rabin rayuwar awa 1 a kusan. 92°C, rabin rayuwar awa 10 a kusan. 72°C. Abubuwan da aka lalata sune CO₂ da benzoic acid, waɗanda ke iya haifar da kumfa cikin sauƙi.

2. Dicumyl peroxide (DCP):

- 1-minti rabin rayuwa a kusan. 171°C, rabin rayuwa na awa 1 a kusan. 135°C, rabin rayuwar awa 10 a kusan. 115°C. Abubuwan da aka samo sune acetophenone da methane, tare da ƙaƙƙarfan wari.

3. Sharadi don Amfani da Bayanai

Abubuwan da ke sama bayanan tunani ne don abubuwa masu tsafta. A cikin ainihin mafita na manne, kaushi, filler, da antioxidants na iya tsoma baki tare da adadin bazuwar, don haka ana buƙatar gyara ta hanyar DSC (Differential Scanning Calorimetry).

II. Hankali don Daidaita Tagar Tsari

1. Ƙayyade Lokaci bisa Digiri na Rushewa

Layer na manne yana buƙatar cimma 97%-99% crosslinking (kimanin 5-7 rabin rayuwa). Sabili da haka, lokacin warkewa ya kamata ya zama sau 5-7 na rabin rayuwa a yanayin zafin da aka yi niyya.

2. Baya-Kididdige Zazzabi daga Lokacin Mazauna Layin Samar

Idan lokacin dumama mai tasiri a cikin tanda yana da minti 5 kuma ana buƙatar rabin rabi na 5 don kammalawa, to, t₁/₂ ≤ 1 da ake buƙata. Zazzabi na rabin rayuwa na minti 1 ya kusan. 131°C na BPO da kusan. 171 ° C don DCP. Ya kamata a saita zafin warkewa a sama ko dan kadan sama da wannan ƙimar.

3. Baya-Kididdige Lokaci daga Matsakaicin Zazzabi Mai Izala

Da farko ƙayyade matsakaicin zafin jiki (Tmax) wanda abin da ke ƙasa da Layer na manne zai iya jurewa. Nemo rabin rayuwa a wannan zafin jiki, sannan ƙididdige mafi ƙarancin lokacin zama ta hanyar ninka sau 5-7, don hana lalacewar thermal daga zazzaɓi.

III. Maganin Windows na Musamman don Teflon Teflon

Teflon substrate yana da kyakkyawan juriya na zafi, amma mannen matsa lamba na silicone da aka yi amfani da shi shine iyakance. Ana ba da shawarar tsare-tsare guda biyu dangane da halayen giciye.

1. Tsarin Saurin Ƙarƙashin Zazzabi BPO

Ya dace da kaset na bakin ciki ko aikace-aikace masu kula da rage zafi. Taga: 115-135°C, 3-10 mintuna.

Misali: A 125 ° C a cikin tanda, rabin rayuwar BPO ya kusan. Minti 2.5, don haka rabin rayuwar 5 suna ɗaukar kusan mintuna 12.5. Don yin sauri, ana iya ɗaga zafin jiki zuwa 135 ° C (t₁/₂ ≈ 45 seconds), kammala aikin a cikin mintuna 5. Koyaya, dole ne a biya hankali ga al'amuran micro-kumfa na CO₂; ana ba da shawarar dumama ko matsakaiciyar nip rollers.

2. Tsarin Tsayayyen Zazzabi na DCP

Ya dace da kaset mai kauri da samfuran da ke buƙatar ingantaccen ƙarfin riƙe da zafin jiki. Taga: 150-175 ° C, 5-15 mintuna.

Misali: A 160°C, rabin rayuwar DCP kusan. Minti 1.5, don haka rabin rayuwar 5 na buƙatar mintuna 7.5. Yin haɓaka zuwa 170 ° C yana rage rabin rayuwa zuwa kusan. Mintuna 0.8, samun sama da 97% bazuwar a cikin mintuna 5, daidai da layin samar da sauri. PTFE yana da tsayin daka a wannan zafin jiki, yana mai da wannan kyakkyawar taga masana'antu.

IV. Mabuɗin Dabaru masu Aiki don Daidaitawa

1. Haɗin Kai Tsakanin Dumama Taka da Halayen Rushewa

Yi amfani da gradient na 'ƙananan zafin jiki → babban zafin jiki cikakken haɗin haɗin gwiwa.' Misali, tare da DCP, da farko ba da izinin abin ɗamara ya gudana kuma ya jika PTFE a 130 ° C, sannan ɗaga zafin jiki zuwa 165 ° C don kammala warkewa. Wannan yana rage lahani na saman ƙasa kuma yana haɓaka anchorage.

2. Dole ne a daidaita bayanan rabin-rayuwa zuwa ga ainihin Tsarin

Masu hanawa ko masu kaushi a cikin tsarin mannewa na iya canza adadin ruɗuwa. Yi amfani da DSC don auna curing exothermic lankwasa, nemo lokaci don isa matsakaicin ƙimar amsawa a yanayin zafin tsari, da ƙididdige daidai rabin rayuwa daidai. Kada ku ɗauki daidaitattun ƙididdiga a makance.

3. Yin la'akari da Tarihin Zazzabi na Substrate

Fim ɗin Teflon wanda aka ƙaddamar da shi na iya fuskantar raguwar zafi sama da 200 ° C. Idan ana amfani da taga mai zafi mai zafi na DCP, yakamata a riga an riga an cire substrate ko kuma a zaɓi fim ɗin da ba ya raguwa don hana murƙushe tef bayan warkewa.

A taƙaice: Dangane da ainihin lokacin dumama na layin samarwa, zaɓi wurin zafin jiki wanda rabin rayuwa ya gamsar da 'n × rabin rayuwa ≈ lokacin zama, ' don haka daidai daidai da halayen lalata na BPO ko DCP zuwa tsarin warkarwa na teflon Teflon.

An bayar da bayanin da ke sama ta hanyar Jiangsu OK New Material Technology Co., Ltd. , mai kera kayan yadudduka masu zafi na Teflon.

Idan kuna son ƙarin koyo game da cikakkun bayanai dalla-dalla, yanayin aikace-aikacen, da zaɓuɓɓukan gyare-gyare don cikakkun samfuran samfuranmu-ciki har da Teflon yadudduka masu zafin jiki, Teflon tef ɗin zafi mai zafi, bel ɗin raga mai zafin jiki na Teflon, mashin manne mara ƙarfi, bel ɗin PTFE mai gefe guda ɗaya, masana'anta PTFE mai ƙarfi, babban zafin jiki na fiber, babban zafin jiki mai ƙarfi masana'anta - da fatan za a iya tuntuɓe mu ta hanyar:

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