EPDM Kauçuğun Mekanik ve Yanma Özelliklerine Alüminyum Trihidroksitin Etkisinin İncelenmesi

Abstract

Bu çalışmada farklı oranlarda alüminyum trihidroksit (Al(OH)_3) yanmaz katkı ilaveli EPDM kauçukların reolojik, mekanik, UL94 yanmazlık ve limit oksijen indeksi (LOI) özelliklerine Al(OH)_3 katkısının etkisi incelenmiştir. EPDM kauçuğuna Al(OH)_3 ağırlıkça % 10, 30, 50 oranlarında ilave edilmiştir. Laboratuvar tipi banbury kullanılarak Al(OH)_3 katkılı EPDM kauçukları hazırlanmış, preste vulkanize edilmiş ve test plakaları elde edilmiştir. Al(OH)_3 miktarının artması ile minimum tork (ML) ve maksimum tork (MH) artmıştır. EPDM kauçuğun 66 Shore A olan sertlik değeri Al(OH)_3 ilavesi ile 87 Shore A elde edilmiştir. Çekme mukavemeti ve kopma uzaması azalırken kalıcı deformasyon ve abrasif aşınma miktarı artmıştır. EPDM kauçuğuna ilave edilen 25phr oranındaki Al(OH)_3 yatay yanma hızını azaltmıştır. EPDM kauçuğunun %22.3 olan LOI değeri Al(OH)3 ilavesi ile %37.4 elde edilmiştir.

Keywords

• EPDM
• Alüminyum trihidroksit
• Mekanik özellikler
• Yanma özelliği
• Limit oksijen indeks

Investigation of the Effect of Aluminum Trihydroxide on the Mechanical and Fire Properties of EPDM Rubber

Abstract

In this study, the effect of aluminum trihydroxide (Al(OH)_3) non-flammable fillers on the rheological, mechanical, UL-94 flammability test and limit oxygen index (LOI) properties of EPDM rubbers with different rates of Al(OH)_3 non-flammable additive was investigated Al(OH)_3 was added to EPDM rubber at rates of 10, 30, 50 percent. EPDM rubbers with non-flammable additives were prepared using laboratory type banbury, vulcanized in the press and test plates were obtained. Minimum torque (ML) and maximum torque (MH) increased with the increase in the amount of Al(OH)3. The hardness value of EPDM rubber, which was 66 Shore A, was obtained as 87 Shore A with the addition of Al(OH)3. While the tensile strength and elongation at break decreased, the amount of permanent deformation and abrasive wear increased. Al(OH)3 added to EPDM rubber at a rate of 25phr reduced the horizontal burning rate. The LOI value of EPDM rubber, which was 22.3%, increased with the addition of Al(OH)_3, and was obtained as 37.4%.

Keywords

• EPDM
• Aluminum trihydroxide
• Mechanical properties
• Fire Properties
• Limiting oxygen index

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