Aerogels are predominantly mesoporous,extremely lightweight,low density(∼0.003 g/cm 3)and thermally insulat-ing materials.Over the years,aerogels have gained increasing attention due to their extraordinary properties...Aerogels are predominantly mesoporous,extremely lightweight,low density(∼0.003 g/cm 3)and thermally insulat-ing materials.Over the years,aerogels have gained increasing attention due to their extraordinary properties(light,heat,sound,electricity and force)and application potentials in varieties of fields.Several studies have been carried out regarding aerogel preparation and its applications in coatings on different substrates.In this review,an overview of aerogels preparation and their application progress in coatings of most common substrates is presented.Attention is paid to aerogel coatings of textiles,leather,and substrates other than leather and textiles for special functionali-ties that could address the application progress in coatings.This review will help to inspire scientists and engineers towards novel aerogel materials and technologies to boost the industrial fabrication of flexible advanced materials.展开更多
Dialdehyde sodium alginate(DSA)is an alternative chrome-free tanning material for fur production.To obtain satisfactory resultant fur and provide suggestions for the usage of DSA in fur making,the general properties o...Dialdehyde sodium alginate(DSA)is an alternative chrome-free tanning material for fur production.To obtain satisfactory resultant fur and provide suggestions for the usage of DSA in fur making,the general properties of DSA tanned sheep fur were systematically investigated.The tanning mechanism of DSA was analyzed and it was verified that DSA was mainly combined with collagen fiber by forming Schiff base covalent bonds while supplemented by a small number of hydrogen bonds and ionic bonds.Due to the acid sensitivity of Schiff base structure,DSA tanned fur had poor resistance to acid rinsing but had excellent resistance to washing and good fatliquoring performance.Also,it had good resistances to yellowing and reductant.After being retanned by chrome tanning agent,the fur was capable of enduring a high-temperature dyeing process(68°C for 8 h).Overall,DSA tanned sheep fur had favorable properties under appropriate post-tanning processing conditions to manufacture light-colored or dark-colored fur products with desirable physical properties.展开更多
基金This work was financially supported by the National Foreign Experts Program-Foreign Youth Talent Program(QN20200173001)the National Key R&D Pro-gram(2020YFE0203800)the Research and development project of China Leather and Footwear Research Institute Co.Ltd.(2021PGX02).
文摘Aerogels are predominantly mesoporous,extremely lightweight,low density(∼0.003 g/cm 3)and thermally insulat-ing materials.Over the years,aerogels have gained increasing attention due to their extraordinary properties(light,heat,sound,electricity and force)and application potentials in varieties of fields.Several studies have been carried out regarding aerogel preparation and its applications in coatings on different substrates.In this review,an overview of aerogels preparation and their application progress in coatings of most common substrates is presented.Attention is paid to aerogel coatings of textiles,leather,and substrates other than leather and textiles for special functionali-ties that could address the application progress in coatings.This review will help to inspire scientists and engineers towards novel aerogel materials and technologies to boost the industrial fabrication of flexible advanced materials.
基金This work was financially supported by the National Key R&D Program(2017YFB0308500).
文摘Dialdehyde sodium alginate(DSA)is an alternative chrome-free tanning material for fur production.To obtain satisfactory resultant fur and provide suggestions for the usage of DSA in fur making,the general properties of DSA tanned sheep fur were systematically investigated.The tanning mechanism of DSA was analyzed and it was verified that DSA was mainly combined with collagen fiber by forming Schiff base covalent bonds while supplemented by a small number of hydrogen bonds and ionic bonds.Due to the acid sensitivity of Schiff base structure,DSA tanned fur had poor resistance to acid rinsing but had excellent resistance to washing and good fatliquoring performance.Also,it had good resistances to yellowing and reductant.After being retanned by chrome tanning agent,the fur was capable of enduring a high-temperature dyeing process(68°C for 8 h).Overall,DSA tanned sheep fur had favorable properties under appropriate post-tanning processing conditions to manufacture light-colored or dark-colored fur products with desirable physical properties.
