SYNTHESIS OF AROMATIC DIAMINE-BASED BENZOXAZINES AND EFFECT OF THEIR BACKBONE STRUCTURE ON THERMAL AND FLAMMABILITY PROPERTIES OF POLYMERS

Tao Zhang; Hong-qiang Yan; Zheng-ping Fang; Mao Peng

doi:10.1007/s10118-013-1313-9

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SYNTHESIS OF AROMATIC DIAMINE-BASED BENZOXAZINES AND EFFECT OF THEIR BACKBONE STRUCTURE ON THERMAL AND FLAMMABILITY PROPERTIES OF POLYMERS

PAPER | Updated：2023-01-03

- SYNTHESIS OF AROMATIC DIAMINE-BASED BENZOXAZINES AND EFFECT OF THEIR BACKBONE STRUCTURE ON THERMAL AND FLAMMABILITY PROPERTIES OF POLYMERS
- Chinese Journal of Polymer Science Vol. 31, Issue 10, Pages: 1359-1371(2013)
- Affiliations：
  
  a.MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
  b.Lab of Polymer Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China
  c.Department of Packaging Engineering, College of Materials and Textiles, Zhejiang Sci-tech University, Hangzhou 310018, China
- Author bio：
  
  **Hong-qiang Yan (闫红强), E-mail: yanhongqiang@nit.net.cn
- Funds：
- DOI：10.1007/s10118-013-1313-9
  CLC：
- Received：15 October 2012，
  
  Revised：2012-12-14，
  
  Accepted：28 December 2012，
  
  Published：2013-10
- Accepted：
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Tao Zhang, Hong-qiang Yan, Zheng-ping Fang, et al. SYNTHESIS OF AROMATIC DIAMINE-BASED BENZOXAZINES AND EFFECT OF THEIR BACKBONE STRUCTURE ON THERMAL AND FLAMMABILITY PROPERTIES OF POLYMERS[J]. Chinese Journal of Polymer Science, 2013, 31(10): 1359-1371.
DOI：

Tao Zhang, Hong-qiang Yan, Zheng-ping Fang, et al. SYNTHESIS OF AROMATIC DIAMINE-BASED BENZOXAZINES AND EFFECT OF THEIR BACKBONE STRUCTURE ON THERMAL AND FLAMMABILITY PROPERTIES OF POLYMERS[J]. Chinese Journal of Polymer Science, 2013, 31(10): 1359-1371. DOI： 10.1007/s10118-013-1313-9.

摘要

Abstract

Three kinds of novel aromatic diamine-based benzoxazines containing naphthalene

propane-2

2-diyldibenzene and neopentyl groups in the backbone

respectively (designated as BAPNCP

BAPBACP and BAPNPGCP

respectively)

were synthesized and characterized. In addition

the effects of backbone structures on curing behaviors of the monomers and thermal and flammability properties of the resulting polymers were systematically studied. The results indicated that BAPNPGCP displayed the highest enthalpy of the curing reaction associated with the ring-opening of benzoxazine

which was due to the effect of benzoxazine ring content per unit mass. Interestingly

the 5 wt% weight loss temperature and char residue after thermogravimetric test for poly(BAPNPGCP) were 8 ℃ and 7% higher than those of poly(BAPBACP). Meanwhile

the total heat release of poly(BAPNPGCP) was less than half of that for poly(BAPBACP)

indicating the substantial effect of benzoxazine ring content on flammability and char formation. Furthermore

it was found that poly(BAPNCP) gave the best thermal stability and flame retardancy

which was due to the synergistic effect between naphthalene group and benzoxazine ring content. This study provides new insight into the curing behavior of benzoxazine and further understanding on the high performance of polybenzoxazine.

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