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Vasıta Lastikleri Niçin Hep Siyah Renkte Üretilir? - HAKANSEYHAN
Yolda gördüğünüz her arabanın niçin hep aynı renkte lastiğe haiz bulunduğunu asla merak ettiniz mi? Hepimiz de bu meraka girdik ve lastiklerin niçin hep siyah renkte bulunduğunu sizler için anlattık.
Yalnızca gözümüzün görebildiği zibilyon değişik renk varken, araçlardaki lasatiklerin niçin hep siyah bulunduğunu asla merak ettiniz mi? Otomobiller rengarenk bir halde etrafta dolaşırken, bu tarz şeyleri zeminden ayıran lastikler niçin tek bir renkte oluyor? İşte bu probleminin yanıtını biz de merak ettik ve lastiklerin niçin hep siyah bulunduğunu tüm gerçekleriyle anlattık.
Fazlaca üstünden özet geçmek gerekirse araçlarımızdaki lastiklerin siyah olmalarının sebebi lastiklerin üretiminde kullanılan malzemelerde yatıyor. Bu malzemeler kısa sürede değişmeyecek olduğundan da lastikler, değişik alanlarda yeni teknolojiler bulunana kadar siyah olmaya devam edecekler. Peki, lastiğe siyah rengini veren malzemeler nedir?
İki ana hammaddeden ilki: Kauçuk
Lastiğin iki ana hammaddesi vardır. Bunlardan ilki olan kauçuk, aynı adı taşıyan ağaçtan meydana getirilen organik kauçuk ve petrolden elde edilmiş yapay kauçuk , ortaya çıkacak lastiğin kullanım alanına bakılırsa uygun oranlarda lastik hamuruna katılıyor. Lastiğin içindeki toplam kauçuk miktarı %60 ila %80 değişiyor. Kauçuk, tekerleğe esneklik veriyor ve sürtünme katsayısını yükseltiyor. Naturel kauçuğun rengi kahverengiyken yapay kauçuk beyaz, sarı, kahverengi veya saydam renklerde bulunabiliyor.
İkinci ana hammaddemiz: İs
Lastikte kullanılan ikinci ana hammaddemiz de is . Ateşin olduğu herhangi bir yerde karşılaşabileceğiniz bu madde, simsiyah renkte ve acele bir halde her yerine bulaştırabileceğiniz bir yapıya haiz. Bir lastiğin içinde kauçuğa ek olarak %20 ila %40 içinde is bulunuyor. İsin esas göreviyse lastiğe aşınma direnci vererek ömrünü uzatmak.
Günümüz teknolojisiyle meydana getirilen boyalarsa isin haiz olduğu siyah renk gücüne karşı başa çıkabilecek kadar kuvvetli değil. İçinde is bulunan tekerlek hamuruna ne kadar renkli boya atılırsa atılsın, tekerlek gene siyah rengini koruyacaktır. Ek olarak hamura attığınız bu boya lastiğin kompozisyonunu bozacağından pek de mantıklı bir işlem de değildir.
İLGİLİ HABER
Yiyecek Etiketlerinde Gördüğümüz ‘KCAL’ Kıymeti Nedir, Kaloriden Ne Farkı Var? Sadece is de en temel sebep değil:
İs, her ne kadar lastiğe renk verilmesini zorluyor olsa da lastiğin siyahlığının en büyük sebebi kendisi değil. Günümüzdeki araçların siyah lastiğe haiz olmalarının en büyük sebebi “karbon siyahı ” adlı pigmenttir. Bu pigment yardımıyla kullandığımız lastikler bu denli kuvvetli ve dayanıklı olabiliyorlar. Bir örnek vermek gerekirse pigment, lastiğin biriktirdiği ısıyı dağıtarak lastiğin ömrünü artırıyor. Doğal bunun karşışığında kauçukla karışan pigment, lastiğin de rengini belirliyor.
Lastiklerde amacın görüntü değil, işlev bulunduğunu unutmamak gerekiyor:
Aracımızın yerle temas etmesini ve saatlerce yol almamızı elde eden bu lastikler, siyah renge haiz olmalarına niçin olacak maddeleri taşımayacak olsaydı bu kadar dayanıklı ve güvenli olamazlardı . Günümüzde renkli lastiklerin azca sayıda örneklerini görüyor olsak da bu lastiklerin günlük sürüş için dahi uygun olmadığını bilmekte yarar var.
Başa dön tuşu