Maganin hana harshen wuta don thermoplastic elastomer TPE

Maganin hana harshen wuta don thermoplastic elastomer TPE

Lokacin amfani da aluminum hypophosphite (AHP) da melamine cyanurate (MCA) a cikin thermoplastic elastomers (TPE) don cimma ƙimar UL94 V0 mai hana harshen wuta, yana da mahimmanci a yi la'akari da tsarin hana harshen wuta, dacewa da kayan aiki, da yanayin sarrafawa. Ga shawarar da aka ba da shawarar:

1. Lodawa Na Kullum Lokacin Amfani Da Shi Da Kai

Aluminum Hypophosphite (AHP)

• Lodawa: 15-25%
• Halaye: Yana haɓaka samuwar char, wanda ya dace da tsarin da ke buƙatar babban aikin injiniya, amma ya kamata a sarrafa zafin sarrafawa (an ba da shawarar ≤240°C).

Melamine Cyanurate (MCA)

• Lodawa: 25-35%
• Halaye: Ya dogara ne akan rugujewar endothermic da narkewar iskar gas; yawan lodi na iya rage sassaucin kayan aiki.

2. Tsarin Haɗawa Mai Haɗawa da Aka Ba da Shawara

Rabon Haɗawa na AHP da MCA

• AHP: 10-15%
• MCA: 10-20%
• Jimlar lodawa: 20-30%

Fa'idodi: Tasirin haɗin gwiwa yana rage jimillar lodi yayin da yake rage tasirin da ke kan halayen injiniya (misali, ƙarfin tauri, sassauci).

3. Muhimman Abubuwan Da Ke Tasiri

• Nau'in Kayan Tushe: TPEs masu tushen SEBS gabaɗaya sun fi sauƙin rage gudu fiye da waɗanda ke tushen SBS, wanda ke ba da damar ɗan rage nauyin ƙari.
• Kauri samfurin: Tsarin bin ƙa'idar UL94 V0 yana da sauƙin fahimta (1.6mm ya fi ƙalubale fiye da 3.2mm), don haka dole ne a daidaita tsarin yadda ya kamata.
• Masu haɗin gwiwa: Ƙara nano-laka ko talc kashi 2-5% na iya haɓaka samuwar char da rage lodin da ke hana harshen wuta.
• Zafin Aiki: Tabbatar da cewa yanayin zafin sarrafawa ya kasance ƙasa da wuraren ruɓewa na AHP (≤240°C) da MCA (≤300°C).

4. Matakan Tabbatarwa da Aka Ba da Shawara

• Gwaji na Farko: Gudanar da ƙananan gwaje-gwaje tare da AHP 12% + MCA 15% (jimilla 27%).
• Gwajin Aiki: Kimanta jinkirin harshen wuta (UL94 a tsaye konewa), tauri (Shore A), ƙarfin tensile, da ma'aunin kwararar narkewa.
• Ingantawa: Idan digo ya faru, ƙara rabon AHP (don haɓaka charring); idan halayen injiniya ba su da kyau, yi la'akari da ƙara robobi ko rage jimillar lodi.

5. Gargaɗi

• A guji haɗawa da abubuwan cikawa masu acidic (misali, wasu masu canza launi), domin suna iya lalata AHP.
• Idan TPE ta ƙunshi adadi mai yawa na robobi masu amfani da mai, ana iya buƙatar ƙara yawan lodawa masu hana harshen wuta (mai na iya rage ingancin hana harshen wuta).

Ta hanyar haɗakarwa mai ma'ana da inganta gwaji, ana iya cimma bin ƙa'idodin UL94 V0 yayin da ake daidaita yadda ake sarrafa TPE da aikin injiniya. Ana ba da shawarar yin haɗin gwiwa da masu samar da na'urorin hana harshen wuta don samun mafita na musamman.

Kamfanin Sichuan Taifeng New Flame Retardant Co., Ltd. (ISO & REACH)

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lucy@taifeng-fr.com