Synthesis of Water-based Isocyanate-Free Poly (Hydroxy Urethane) Films and  Investigation of Their Self-Healing Properties

Dilek Dalgakıran

Makale detayları

Synthesis of Water-based Isocyanate-Free Poly (Hydroxy Urethane) Films and Investigation of Their Self-Healing Properties

Yazarlar:

Dilek Dalgakıran

Yayıncı:

Süleyman Demirel University

Ana Başlıklar:

Mühendislik

Dergi:

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.28 Issue 1, pp.1-11

Belge Tipi:

Makale

Yayın Tarihi:

4/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001315937

pISSN:

1308-6529

Anahtar kelimeler:

Özet:

 This research aimed to develop water-soluble isocyanate-free polyhydroxyl urethane PHUs with phosgene-free, low-in-volatile organic compounds VOCs emission and analyze their self-healing properties. Disulfide bonds were introduced into the polymer backbone of PHUs to constitute the self healing capability. With a solid content of 30, WSPHU dispersion was prepared without co-solvent. To form the network structure of WSPHUs, different ratios of hexakis methoxymethyl melamine HMMM were used. Transparent and thermally stable WSPHUs were developed by using different ratios of HMMM 2-8 by weight. The films were damaged with 180 grit sandpaper and kept at 80 oC in an oven. By using an optical microscope, it was observed that damaged films repaired themselves to varying degrees. According to the experimental results, HMMM ratio and extent of the damage scratch thickness significantly impact the self-healing abilities of the WSPHUs. This is a pioneering study in identifying the development of self-healing isocyanate-free WSPHUs for the future.

 This research aimed to develop water-soluble isocyanate-free polyhydroxyl urethane PHUs with phosgene-free, low-in-volatile organic compounds VOCs emission and analyze their self-healing properties. Disulfide bonds were introduced into the polymer backbone of PHUs to constitute the self healing capability. With a solid content of 30, WSPHU dispersion was prepared without co-solvent. To form the network structure of WSPHUs, different ratios of hexakis methoxymethyl melamine HMMM were used. Transparent and thermally stable WSPHUs were developed by using different ratios of HMMM 2-8 by weight. The films were damaged with 180 grit sandpaper and kept at 80 oC in an oven. By using an optical microscope, it was observed that damaged films repaired themselves to varying degrees. According to the experimental results, HMMM ratio and extent of the damage scratch thickness significantly impact the self-healing abilities of the WSPHUs. This is a pioneering study in identifying the development of self-healing isocyanate-free WSPHUs for the future.

 This research aimed to develop water-soluble isocyanate-free polyhydroxyl urethane PHUs with phosgene-free, low-in-volatile organic compounds VOCs emission and analyze their self-healing properties. Disulfide bonds were introduced into the polymer backbone of PHUs to constitute the self healing capability. With a solid content of 30, WSPHU dispersion was prepared without co-solvent. To form the network structure of WSPHUs, different ratios of hexakis methoxymethyl melamine HMMM were used. Transparent and thermally stable WSPHUs were developed by using different ratios of HMMM 2-8 by weight. The films were damaged with 180 grit sandpaper and kept at 80 oC in an oven. By using an optical microscope, it was observed that damaged films repaired themselves to varying degrees. According to the experimental results, HMMM ratio and extent of the damage scratch thickness significantly impact the self-healing abilities of the WSPHUs. This is a pioneering study in identifying the development of self-healing isocyanate-free WSPHUs for the future.

 Bu araştırmada, fosgensiz ve düşük uçucu organik bileşik UOB, volatile organic compunds, VOCs emisyonuna sahip izosiyanat içermeyen su esaslı polihidroksil üretan WPHU filmlerin hazırlanması ve kendi kendini onarma özelliklerinin incelenmesi hedeflenmiştir. WSPHUların kendi kendini onarma yeteneği polimer ana zincirine disülfür bağları eklenmesiyle sağlanmıştır. 30 katı içeriğe sahip WSPHU dispersiyonu herhangi bir yardımcı çözücü olmadan sadece su ile hazırlanmıştır. WSPHUların ağ yapısını oluşturmak için hexakis metoksimetil melamin HMMM kullanılmıştır. Şeffaf görünümde ve ısıl olarak kararlı WSPHU filmler farklı oranlarda HMMM ağırlıkça 2-8 kullanılarak hazırlanmıştır. 180 numara zımpara ile hasarlanan filmler etüvde 24 saat 80 oCde bekletildikten sonra kendi kendini onarma özellikleri incelenmiştir. Optik mikroskopla yapılan gözlemler neticesinde hasarlı filmlerin kendi kendilerini farklı derecelerde onardığı görülmüştür. Deney sonuçlarına göre HMMM oranı ve hasarın büyüklüğü çizik kalınlığı, WSPHUların kendi kendini onarma yetenekleri üzerinde önemli bir etkiye sahiptir. Filmdeki HMMM oranı 4te çizik kalınlıkları da dikkate alındığında kendi kendini onarma performansı en iyidir. Mevcut çalışma, kendi kendini onaran izosiyanat içermeyen WSPHUların geliştirilmesi için öncü bir çalışma niteliğindedir.

Makale detayları

Synthesis of Water-based Isocyanate-Free Poly (Hydroxy Urethane) Films and Investigation of Their Self-Healing Properties

Yazarlar:

Dilek Dalgakıran

Yayıncı:

Süleyman Demirel University

Ana Başlıklar:

Mühendislik

Dergi:

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.28 Issue 1, pp.1-11

Belge Tipi:

Makale

Yayın Tarihi:

4/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001315937

pISSN:

1308-6529

Self-healing

Isocyanate-free

Poly( hydroxy urethane)

water-basedKendi kendini onaran

Poli (Hidroksi Üretan)

Su esaslı

izosiyanat içermeyen

Sayı

Makale detayları

Yazarlar: Dilek Dalgakıran

Yayıncı: Süleyman Demirel University

Ana Başlıklar: Mühendislik

Dergi: Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.28 Issue 1, pp.1-11

Belge Tipi: Makale

Yayın Tarihi: 4/2024

Belge Dili: Türkçe

Document ID (Org No.): 2001315937

pISSN: 1308-6529

Sayı

Yazarlar:

Dilek Dalgakıran

Yayıncı:

Süleyman Demirel University

Ana Başlıklar:

Mühendislik

Dergi:

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.28 Issue 1, pp.1-11

Belge Tipi:

Makale

Yayın Tarihi:

4/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001315937

pISSN:

1308-6529