Dinamik olarak vulkanize edilmiş PP/SR harmanlarının mekanik, ısıl ve morfolojik özelliklerinin incelenmesi

Mehmet Kodal

Dinamik olarak vulkanize edilmiş PP/SR harmanlarının mekanik, ısıl ve morfolojik özelliklerinin incelenmesi

Öz

Günümüzde termoplastikler gibi işlenebilmeleri nedeniyle termoplastik bir faz ve dinamik olarak çapraz bağlanmış bir elastomerden oluşan termoplastik vulkanizatlar (TPV) teknik ve ekonomik açıdan oldukça önem kazanmıştır. Bu çalışmada, endüstriyel olarak üretilen TPV’lere muadil olabilecek polipropilen (PP)/silikon kauçuk (SR) TPV’leri üretilmiş ve mekanik, ısıl ve morfolojik özellikleri incelenmiştir. PP matrisinde SR’yi çapraz bağlayabilmek için peroksit kürlenme ajanı ve çapraz bağlanma verimini artırmak içinse triallil izosiyanürat (TAIC) koajan olarak kullanılmıştır. Eriyik harmanlama sırasında yapılan tork ölçümleri, peroksit varlığında polipropilen/silikon kauçuk harmanlarının daha düşük eriyik viskozitesi değerleri sergilediğini göstermiştir. Peroksit ilavesi ile birlikte PP fazda meydana gelen zincir bölünme reaksiyonlarının PP/SR TPV’lerinin mekanik özelliklerini olumsuz yönde etkilediği, aksine TAIC ilavesiyle peroksit varlığında düşen mekanik özelliklerin kayda değer derecede arttığı tespit edilmiştir. Taramalı elektron mikroskopu (SEM) analizlerinden, SR’nin PP matrisinde homojen bir dağılım sergilediği gözlenmiştir. Diferansiyel taramalı kalorimetri (DSC) analiz sonuçlarından, SR ilavesinin PP’nin kristallenmesini baskıladığı tespit edilmiştir.

Anahtar Kelimeler

Polipropilen,Silikon kauçuk,Dinamik vulkanizasyon

References

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Details

Primary Language

Turkish

Subjects

-

Journal Section

Research Article

Authors

Mehmet Kodal ^* This is me

Publication Date

April 4, 2018

Submission Date

May 23, 2017

Acceptance Date

October 2, 2017

Published in Issue

Year 2018 Volume: 9 Number: 1

IZ

https://izlik.org/JA53HJ76YJ

Cite

RIS / Bibtex

IEEE

[1]M. Kodal, “Dinamik olarak vulkanize edilmiş PP/SR harmanlarının mekanik, ısıl ve morfolojik özelliklerinin incelenmesi”, DUJE, vol. 9, no. 1, pp. 325–335, Mar. 2018, [Online]. Available: https://izlik.org/JA53HJ76YJ