不同复鞣方法对皮胶原纤维网络阻燃性能的影响

doi:10.19677/j.issn.1004-7964.2020.06.003

Leather Science and Engineering ›› 2020, Vol. 30 ›› Issue (6): 13-20.doi: 10.19677/j.issn.1004-7964.2020.06.003

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Effect of Different Retanning Methods of Leather Collagen Fiber Network on its Flame Retardancy

WEN Qilin^1,3, XU Weixing^1,*, SHI Bi^1,2

1. National Engineering Research Center of Clean Technology in Leather Manufacture, Sichuan University, Chengdu 610065, China;
2. Key Laboratory of Leather Chemistry and Engineering (Sichuan University, Ministry of Education, Chengdu 610065, China;
3. College of Biomass Science and Engineering (Sichuan University, Chengdu 610065, China

Received:2020-04-09 Published:2020-12-28 Online:2020-12-02

Abstract

Abstract: Leather collagen fiber network (LCFN), as a kind of protein materials, has the potential to be prepared into flame retardant filler for polymer modification. However, due to its relatively low limit oxygen index (LOI), the modification of LCFN is needed for this purpose. In this study, the modification was undertaken by retanning LCFN using dicyandiamide resin, melamine resin, acrylic resin, vegetable tannin, chromium tanning agent and aluminum sulfate, respectively. The effects of type and dosage of retanning agents on the flame retardancy of the LCFN were studied. The results showed that retanning can improve the flame retardancy of LCFN. The LCFN retanned by aluminum sulfate had the best flame retardant performance due to the highest initial decomposition temperature, the largest char yield (800 ℃), and stable and dense structure of carbon residue. Especially, when the dosage of aluminum sulfate (based on Al₂O₃) was 3%, the LOI and char yield (800 ℃) of the modified LCFN increased to 61.4% and 13.65%, respectively, which exhibited excellent flame retardant performance.

Key words: leather collagen fiber, retanning, flame retardancy, aluminum

CLC Number:

WEN Qilin, XU Weixing, SHI Bi. Effect of Different Retanning Methods of Leather Collagen Fiber Network on its Flame Retardancy[J]. Leather Science and Engineering, 2020, 30(6): 13-20.

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Effect of Different Retanning Methods of Leather Collagen Fiber Network on its Flame Retardancy

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