Synthesis and performance of flame retardant additives based on cyclodiphosph(V)azane of sulfaguanidine,1,3-di-[N/-2-pyrimidinylsulfanilamide]-2, 2, 2.4, 4, 4-hexachlorocyclodiphosph(V)azane and 1,3-di-[N/-2-pyrimidinylsulfanilamide]-2, 4-di[aminoacetic acid]-2, 4-dichlorocyclodiphosph(V)azane incorporated into polyurethane varnish

2012 ◽  
Vol 74 (3) ◽  
pp. 615-621 ◽  
Author(s):  
H. Abd El-Wahab ◽  
M. Abd El-Fattah ◽  
N. Abd El-Khalik ◽  
Carmen M. Sharaby
Polymers ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1114 ◽  
Author(s):  
Yanshan Gao ◽  
Qiang Wang ◽  
Weiran Lin

We found in our previous study that layered double hydroxides (LDHs) which undergo aqueous miscible organic solvent treatment (AMOST) can tune the hydrophobicity surface of LDHs to be hydrophobic, and then the solvent mixing method can be used to prepare polymer/LDH nanocomposites. However, flame retardant property is not very high if LDHs are only used. In this present work, ammonium polyphosphate (APP) intercalated LDHs and zinc borate (ZB) was incorporated into a polypropylene (PP) matrix using the solvent mixing method. The structures, morphologies, and performance of the composites were characterized carefully. The peak heat release rate (PHRR) reduction of PP containing 10 and 20 wt % APP-LDH reached 27% and 55%, respectively, which increased up to 63% compared with PP/CO3-LDH. After incorporating 2 wt % ZB in the PP/APP-LDH system, the flame retardant property was further improved. Polypropylene composites with 20 wt % APP-LDH and 2 wt % ZB showed a 58% PHRR reduction. In addition, thermogravimetric analyzer (TGA) results indicated that the addition of APP-LDH and ZB improved the temperature at 50% weight loss (T50%) and the char formation of the materials significantly.


Author(s):  
Nguyen Tuan Anh

Flammability of polymer composite appears to be one of the greatest threats and hence limits its advanced applications. Polymer composite materials can be designed to obtain wide ranges of properties in comparison with traditional materials. However, almost common polymers include the intrinsic flammability, restricting their applications in spite of their flexibility and performance efficiency. In this study, a material based on epoxy Epikote 240 resin 90 phr and epoxidized linseed oil 10 phr was prepared. In order to improve the material's flame retardancy ability but maintain its mechanical strength, the mixture of flame retardants including 9 phr antimony trioxide and 11 phr chlorinated paraffins along with amin compounds as a curing agent were added into the material. In addition, E-glass woven fabric (E 600g/m2 ) was used to improve mechanical strength of the material. As a result, the material was considered as the flame- retardant material with LOI index to be 30.3%.


Author(s):  
Xin Zhang ◽  
Weiwei Zhang ◽  
Ye-Tang Pan ◽  
Lijun Qian ◽  
Zhaolu Qin ◽  
...  

2016 ◽  
Vol 124 (3) ◽  
pp. 1399-1409 ◽  
Author(s):  
Liyong Zou ◽  
Jiyan Liu ◽  
Xueqing Liu ◽  
Xiaomeng Wang ◽  
Jia Chen

2017 ◽  
Vol 56 (16) ◽  
pp. 1760-1771 ◽  
Author(s):  
Hao Qu ◽  
Ruilan Fan ◽  
Jianli Yuan ◽  
Bingbing Liu ◽  
Lijie Sun ◽  
...  

2021 ◽  
Author(s):  
Jia Xu ◽  
Yifan Zhi ◽  
Sainan Wei ◽  
Yujuan Wei ◽  
Luyi Chen

Abstract There is a conflict between enhancing the functionality of products and reducing the environmental impact of manufacturing in the materials industry. Using green chemicals or adopting cleaner production processes can help overcome this conflict. However, researchers usually neglect the substitution effect when selecting green technology, namely, that investing more in chemical development decreases the resources used in cleaner process techniques. This study demonstrated this substitution effect in the modification of cotton fabrics. We fabricated hydrophobic and flame-retardant cotton fabrics with functional integrated graphene. It was found that these fabrics can be prepared in one step. As seen from an environmental assessment, applying functional integrated graphene can decrease the time required, reduce the energy consumption, and reduce the wastewater discharge. Based on the hydrophobicity-flame retardancy quadrant, we found that functional integrated graphene can improve the compatibility of different functionalities. On the other hand, compared to the use of commercial finishing agents, using functional integrated graphene can reduce organic discharge by up to 92%. This study demonstrates that using green chemicals can reduce pollution discharge and result in a cleaner production process. This study also provided atom economic ideas for green modification of cellulosic materials.


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