<i>In situ</i>synthesis of a novel transparent poly (methyl methacrylate) resin with markedly enhanced flame retardancy

Jiang, Saihua; Zhu, Yulu; Hu, Yuan; Chen, Guohua; Shi, Xingxing; Qian, Xiaodong

doi:10.1002/pat.3631

Cited by 25 publications

(14 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The broader absorption peak of PMMA‐co‐BDPA at approximately 3435 cm −1 is attributable to the hydroxyl in the char layers, which may originate from phosphoric acid and other substances that decompose during the combustion of the copolymer. The absorption peak of PH can be clearly observed at 2355 cm −1 , and the peak appearing at approximately 1625 cm −1 indicates the formation of polyaromatic carbons . In addition, the peaks at 1397 and 1117 cm −1 are the corresponding peaks of PO and PO, respectively.…”

Section: Resultsmentioning

confidence: 94%

Synthesis of a novel phosphate‐containing highly transparent PMMA copolymer with enhanced thermal and flame retardant properties

Yang

Wang

Guo

et al. 2019

Polymers for Advanced Techs

View full text Add to dashboard Cite

A novel poly(methyl methacrylate) (PMMA)-based copolymer (PMMA-co-BDPA) rich in aromatic rings was synthesized via radical copolymerization between a phosphorus-containing acrylic monomer (BDPA) and methyl methacrylate (MMA).UV-vis spectroscopy demonstrated that the copolymer had high transparency. Thermogravimetric analysis (TGA) and a differential scanning calorimeter (DSC) were used to test the thermal properties of the composites. Additionally, the PMMA-co-BDPA-15 copolymer exhibited a 23% increase in the limited oxygen index (LOI) value. A cone calorimeter test indicated that the peak heat release rate (pk-HRR) of PMMAco-BDPA was reduced by 29.2% compared with that of pure PMMA, and the carbon yield of burning was obviously increased. The combined test results demonstrated that the prepared copolymer material had good transparency, thermal stability, and flame retardancy. K E Y W O R D Scopolymerization, flame retardancy, poly(methyl methacrylate), transparency

show abstract

Section: Resultsmentioning

confidence: 94%

Synthesis of a novel phosphate‐containing highly transparent PMMA copolymer with enhanced thermal and flame retardant properties

Yang

Wang

Guo

et al. 2019

Polymers for Advanced Techs

View full text Add to dashboard Cite

show abstract

“…With the introduction of MMA, HRR peak value is shifted to higher value while THR value decreases slightly. For example, Jiang et al produced a new PMMA‐based copolymer with a novel phosphorus‐containing monomer (DOPO‐AA), and it is concluded that the HRR peak and THR of PMMA copolymer were 192.0 W/g and 17.1 kJ/g when 10.0 wt% DOPO‐AA was added, respectively. Compared to these data, PUPE and UPE + MMA50% copolymer possess lower HRR and THR values.…”

Section: Resultsmentioning

confidence: 99%

Effect of methyl methacrylate on the properties of transparent flame retardant unsaturated phosphate ester copolymer

Liu

Lin

Huang³

et al. 2019

Polymer Engineering & Sci

View full text Add to dashboard Cite

The effect of methyl methacrylate (MMA) on the properties of transparent flame retardant unsaturated phosphate ester copolymer (poly[UPE-co-MMA]) prepared by bulk polymerization technique was investigated. Fourier transform infrared spectra, gel fraction (G) test, and dynamic mechanical analysis revealed the structure and crosslinking density of poly(UPE-co-MMA) copolymers. The thermal degradation and flame retardancy of copolymers were indicated by thermogravimetric analysis, limiting oxygen index (LOI), and microscale combustion calorimeter (MCC) test. Besides, the mechanical properties and transparency were tested with testing machines and solid ultraviolet absorption spectra. As the MMA content increased to 50%, the copolymer contained 50 wt% MMA showed the maximal G (88.93%) and transmittance was up to 91.72%. From the poly(UPE-co-MMA) copolymers, the tensile strength increased from 14.62 to 26.95 MPa, assigned to the increase of crosslinking density of copolymers. The char yield of poly(UPE-co-MMA) was up to 21.18 wt%, which was a result of decomposition of phosphate groups, producing a phosphorus-rich layer that increased the thermal stability of the residues. LOI and MCC results confirm that the introduction of MMA can retain the flame retardancy of copolymer remarkably. POLYM. ENG.

show abstract

“…Alternatively, DOPO‐based monomers have been used to prepare matrices with chemically bound flame‐retardant groups (reactive strategy) by step polymerization, like epoxy resins, polyurethane, poly(ethylene terephthalate), polyamide, ethylene‐vinyl acetate copolymer, and polysulfone . Nevertheless, to the best of our knowledge, only one study has been reported about the synthesis and application of DOPO‐derived acrylate monomer for the preparation of flame resistant thermoplastic matrix by free radical polymerization . More precisely, the latter monomer was first derived from acryloyl chloride with DOPO covalently linked as side group, then copolymerized with methyl methacrylate (MMA).…”

Section: Introductionmentioning

confidence: 99%

DOPO‐Based Phosphorus‐Containing Methacrylic (Co)Polymers: Glass Transition Temperature Investigation

Bier

Six

Durand

2019

Macro Materials & Eng

View full text Add to dashboard Cite

flame retardant, DOPO is also attractive because PH bond can be easily modified into PN, PO, or PC bonds, leading to improved thermal stability. [5][6][7][9][10][11][12] DOPO has been successfully used as an additive in many polymers (additive strategy) such as epoxy resins, [13,14] polyurethane, [9] acrylonitrile-butadiene-styrene copolymers, [15] polyamide, [16] and poly(methyl methacrylate) (PMMA). [17] Alternatively, DOPO-based monomers have been used to prepare matrices with chemically bound flame-retardant groups (reactive strategy) by step polymerization, like epoxy resins, [18][19][20][21] polyurethane, [22] poly(ethylene terephthalate), [23] polyamide, [24] ethylenevinyl acetate copolymer, [25] and polysulfone. [26,27] Nevertheless, to the best of our knowledge, only one study has been reported about the synthesis and application of DOPO-derived acrylate monomer for the preparation of flame resistant thermoplastic matrix by free radical polymerization. [28] More precisely, the latter monomer was first derived from acryloyl chloride with DOPO covalently linked as side group, then copoly merized with methyl methacrylate (MMA).Because of the very limited number of available studies, there is a need for new flame-retardant monomers able to react with common monomers via free radical polymerization. While bringing flame-retardant properties, these monomers should also preserve mechanical properties of final polymeric materials. The first requirement regarding mechanical properties is generally that the materials exhibit a high enough glass transition temperature (T g ) as compared to the conditions of targeted application. Indeed, when flame-retardant additives are blended with thermoplastics, they often act as plasticizers and consequently lower the T g of the final material, which may be a serious drawback. Such effect has been reported for DOPO. [17] Thus, the reactive strategy appears promising for providing efficient flame-retardant properties while limiting undesirable plasticizing effect.This work aimed at exploring a reactive strategy involving the design and the use of functional monomers with DOPO pending groups for including significant amounts of phosphorus in the material while keeping high enough T g . To that goal, DOPO was used as the precursor of the flame-retardant moiety and was covalently linked to methacrylate groups by aliphatic hydrocarbon spacers with number of carbon atoms ranging between 3 and 11 (Figure 2). Chemical structure and purity of the prepared novel phosphorus-containing methacrylic monomers were verified by combining several NMR Phosphorus-Containing MethacrylatesA two-step synthetic procedure is designed for preparing new flame-retardant methacrylic monomers containing 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) as a substituent side group. DOPO and methacrylate moieties are linked by linear aliphatic hydrocarbon spacers (3 to 11 carbon atoms). Copolymerization with methyl methacrylate is carried out leading to copolymers containing between 2 and 10 wt% ...

show abstract

In situsynthesis of a novel transparent poly (methyl methacrylate) resin with markedly enhanced flame retardancy

Cited by 25 publications

References 32 publications

Synthesis of a novel phosphate‐containing highly transparent PMMA copolymer with enhanced thermal and flame retardant properties

Synthesis of a novel phosphate‐containing highly transparent PMMA copolymer with enhanced thermal and flame retardant properties

Effect of methyl methacrylate on the properties of transparent flame retardant unsaturated phosphate ester copolymer

DOPO‐Based Phosphorus‐Containing Methacrylic (Co)Polymers: Glass Transition Temperature Investigation

Contact Info

Product

Resources

About