Flame‐Retarded Epoxy Resins with a Curing Agent of DOPO‐Triazine Based Anhydride

Wirasaputra, Alvianto; Yao, Xiaohao; Zhu, Yaming; Liu, Shumei; Yuan, Yan; Zhao, Jianqing; Fu, Yi

doi:10.1002/mame.201600094

Cited by 64 publications

(32 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… And, in general, anhydride and amine are two kinds of curing agents for EPs, the aromatic polyamine cured network structure with relatively low cross‐linking density, while the anhydride cured EPs have a larger amount of rigid, a higher glass transition temperature ( T g ), and lower curing shrinkage. Despite the fact that anhydride type is the second largest usage amount of curing agent for EPs, the research on the flame‐retardant modification of curing agent has rarely been reported up to now …”

Section: Introductionsupporting

confidence: 91%

“…[34][35][36] Despite the fact that anhydride type is the second largest usage amount of curing agent for EPs, the research on the flame-retardant modification of curing agent has rarely been reported up to now. 37 In this work, we modified PEPA by reacting with trimellitic anhydride chloride (TMAC) and used the resulting anhydride product (PEPA-TMAC) as a co-curing agent for EP. The chemical structure of PEPA-TMAC was characterized by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), and highresolution mass spectrum (HRMS).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Synthesis of a caged bicyclic phosphates derived anhydride and its performance as a flame‐retardant curing agent for epoxy resins

Liu

et al. 2019

Polymers for Advanced Techs

View full text Add to dashboard Cite

A novel curing and flame‐retardant agent (PEPA‐TMAC) was successfully synthesized. The chemical structure was characterized by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR). Use of PEPA‐TMAC as part of the curing agent in combination with another anhydride for a commercial epoxy resin (EP) was studied. Results of differential scanning calorimetry (DSC) indicated that PEPA‐TMAC was an effective curing agent for EP. The dynamic mechanical analysis (DMA) results showed that the glass transition temperature (Tg) and cross‐linking density (Ve) of EP composites exhibited an increase trend with the addition of PEPA‐TMAC. The limiting oxygen index (LOI) value of EP composites reached 26.9%, and the cone calorimeter results indicated that peak heat release rate (PHRR), total heat release (THR), smoke produce rate (SPR), and total smoke produce (TSP) remarkably decreased with increasing PEPA‐TMAC content. TGA data showed that the addition of PEPA‐TMAC greatly increased the amount of residual char during combustion. The morphology of the residual char was studied by SEM and showed that the addition of PEPA‐TMAC greatly increased the stability of EP composites. The thermogravimetric analysis (TGA), energy‐dispersive X‐ray spectroscopy (EDS), and FTIR results revealed the flame‐retardant mechanism that PEPA‐TMAC can promote the formation of charred layers with the phospho‐carbonaceous complexes in the condensed phase during burning of EP composites.

show abstract

Section: Introductionsupporting

confidence: 91%

mentioning

confidence: 99%

Synthesis of a caged bicyclic phosphates derived anhydride and its performance as a flame‐retardant curing agent for epoxy resins

Liu

et al. 2019

Polymers for Advanced Techs

View full text Add to dashboard Cite

show abstract

“…The T g was maintained below 350 °C, and significantly reduced above it. The T g reached the minimum value of 91.9 °C at 370 °C and then was increased above 370 °C probably because of crosslinking caused by Fries rearrangement and Kolbe–Schmitt rearrangement . The onsets of degradation points of PC/PP20 at 0.5 and 1 wt % loss were determined to be 285.7 and 326.7 °C, respectively (Figure S8).…”

Section: Resultsmentioning

confidence: 94%

Probing toughness of polycarbonate (PC: ductile and brittle)/polypropylene (PP) blends and talc‐triggered PC/PP brittle composites with diverse impact fracture parameters

Jang

2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

Polycarbonates (PCs) are commonly used as a blend and a composite to achieve pecuniary advantages and dimensional stability. While the toughness of a homogeneous PC matrix has been extensively investigated, examination for the toughness of heterogeneous blend systems such as PC/polypropylene (PP) blends has been limited. Furthermore, recent interest in highly flowable PCs (lowmolecular-weight PCs with low ductility) has surfaced due to the large and geometrically complex plastic parts. Herein, the toughness for PC/PP blends and PC/PP/talc composites in a ductile and a brittle PC matrix was explored by using various toughness measurements such as notched Izod impact strength, falling dart impact, boss quasi-static energy/impact energy, and tensile toughness tests. In a ductile PC matrix [melt flow index (MFI) = 8], the incorporation of PP gradually reduced the toughness. On the other hand, the toughness was improved by 450% at 2 wt % PP in a brittle PC matrix (MFI = 19). Similarly, in the talc-induced brittle PC matrix, the toughness was enhanced at the PP loading from 2 to 10 wt %. The density of PC/PP blends was gradually reduced from 1.19 to 1.10 g cm −3 with increasing PP concentration from 0 to 20 wt %. Degradation, density, thermal behaviors, and morphology were also investigated.

show abstract

“…In the past, bromine compounds were commonly used as flame retardants for polymers, but a number of products with bromine compounds have been restricted now owing to the probability of generating toxic and corrosive smoke during combustion. Many nonhalogen‐based compounds, such as phosphorus‐ or nitrogen‐containing additives, fillers, epoxy resins, and curing agents, have been investigated to improve the flame resistant properties of epoxy thermosets …”

Section: Introductionmentioning

confidence: 99%

Flame retardant and mechanical properties of epoxy composites with ammonium polyphosphate and hyperbranched silicon‐containing polymers

Cheng

Kuo

2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

The epoxy resin was mixed with ammonium polyphosphate (APP) and hyperbranched silicon-containing polymers (HBP-B2). The cured composites were investigated by thermogravimetric analysis, Underwriters Laboratory standard for the flammability properties under vertical burning (UL-94V), and limited oxygen index (LOI) test methods. The LOI of 43.5 and could be obtained at the weight ratio of 70:25:5 for the epoxy resin:APP:HBP-B2, Sample A25B5, and the LOI was higher than that of the composite with 30 wt % APP only, Sample A30B0, of which the LOI was 34.5. It suggested that the HBP-B2 could cooperate with the epoxy/APP composite to form a more effective protection layer during combustion, which resulted in a higher second-stage thermal degradation temperature. During the UL-94V test, the flame was extinguished immediately once the burner was removed. Furthermore, the tensile and impact strength of the epoxy/APP composite could also be improved by using HBP-B2 compound as the toughening agent. The composite containing 20% of APP and 10% of HBP-B2, Sample A20B10, still had excellent flame retardant properties with a V-0 rating. Moreover, the tensile strength and impact strength of that composite got 19 and 25% increases compared with the Sample A30B0, which contained 30% of APP only.

show abstract

Flame‐Retarded Epoxy Resins with a Curing Agent of DOPO‐Triazine Based Anhydride

Cited by 64 publications

References 47 publications

Synthesis of a caged bicyclic phosphates derived anhydride and its performance as a flame‐retardant curing agent for epoxy resins

Synthesis of a caged bicyclic phosphates derived anhydride and its performance as a flame‐retardant curing agent for epoxy resins

Probing toughness of polycarbonate (PC: ductile and brittle)/polypropylene (PP) blends and talc‐triggered PC/PP brittle composites with diverse impact fracture parameters

Flame retardant and mechanical properties of epoxy composites with ammonium polyphosphate and hyperbranched silicon‐containing polymers

Contact Info

Product

Resources

About