Production and investigation of some properties of HDPE composite materials with textile waste and wood flour additives

Öz

This study examined cotton waste known as “cotton mill filter dust”, a by-product of yarn production, as a filler in high-density polyethylene (HDPE) composites, and compared it with red pine wood flour as a control filler. The aim was to turn a textile waste that cannot be reused in spinning into a usable composite material. The waste was tested in washed and untreated forms, at four particle sizes (20, 40, 60 and 80 mesh) and four loading ratios (10%, 20%, 30% and 40%). Composite sheets were produced by hot pressing, and their tensile (ASTM D638), flexural (ASTM D790), impact (ASTM D256), density (dimensional/geometric method) and water absorption (ASTM D7031-11) properties were measured. The data were analysed by one-way ANOVA followed by Tukey's HSD test. Neat HDPE had a tensile strength of 21.63 MPa, a flexural strength of 33.44 MPa and an impact strength of 20.21 J/m, and these values generally decreased as the filler ratio rose. Washing the waste, however, raised the elasticity modulus and gave a stiffer composite; the flexural modulus of the 40% washed sample reached 1617 MPa. Overall, washed cotton waste in the 20–40 mesh range exhibited optimal mechanical properties; this indicates that pretreated textile waste of this size can be used to produce composites suitable for industrial applications.

Anahtar Kelimeler

• Keywords: Cotton waste
• HDPE composite
• wood flour
• recycling

Proje Numarası

KSÜ BAP 2017/1-68

Tekstil atığı ve odun unu katkılı HDPE kompozit malzemelerinin üretimi ve bazı özelliklerinin incelenmesi

Öz

Bu çalışmada, iplik üretiminin bir yan ürünü olan ve “klima tozu” olarak bilinen pamuk atığı, yüksek yoğunluklu polietilen (HDPE) kompozitlerde dolgu maddesi olarak incelenmiş ve kontrol grubu dolgu maddesi olarak kullanılan kızılçam odun unu ile karşılaştırılmıştır. Çalışmanın amacı, iplik üretiminde yeniden kullanılamayan bir tekstil atığını, kullanılabilir bir kompozit malzemeye dönüştürmektir. Atık, yıkanmış ve işlenmemiş halleriyle, dört farklı parçacık boyutu (20, 40, 60 ve 80 mesh) ve dört farklı yükleme oranı (%10, %20, %30 ve %40) ile test edilmiştir. Kompozit levhalar sıcak presleme ile üretilmiş ve çekme (ASTM D638), eğilme (ASTM D790), darbe (ASTM D256), yoğunluk (boyutsal yöntem) ve su alma (ASTM D7031-11) özellikleri ölçülmüştür. Veriler tek yönlü ANOVA ve ardından Tukey's HSD testi ile analiz edilmiştir. Saf HDPE'nin çekme mukavemeti 21,63 MPa, eğilme mukavemeti 33,44 MPa ve darbe mukavemeti 20,21 J/m bulunmuştur ve bu değerler genel olarak dolgu oranı arttıkça azalma göstermiştir. Bununla birlikte, atığın yıkanması elastikiyet modülünü arttırmış ve daha sert bir kompozit elde edilmesini sağlamış; %40 oranında yıkanmış numunenin eğilme modülü 1617 MPa'ya ulaşmıştır. Genel olarak, 20-40 mesh aralığındaki yıkanmış pamuk atığı optimum mekanik özellikleri sergilemiş; bu da, bu boyutlardaki ön işleme tabi tutulmuş tekstil atıklarının endüstriyel kullanıma uygun kompozitler üretmek için kullanılabileceğine işaret etmiştir.

Anahtar Kelimeler

• Pamuk atığı
• HDPE kompozit
• Odun unu
• Geri dönüşüm

Proje Numarası

KSÜ BAP 2017/1-68

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