A novel DOPO-g-KH550 modification wood fibers and its effects on the properties of composite phenolic foams

Ma, Yufeng; Geng, Xiang; Zhang, Xi; Wang, Chunpeng; Chu, Fuxiang

doi:10.2478/pjct-2018-0022

Cited by 13 publications

(4 citation statements)

References 40 publications

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“…They observed that the addition of only 0.5 wt% of glass fibres (L = 6.4 mm, D = 10 µm) improved the flexural strength by 35%. Modified wood fibres improved also the flexural strength [85].…”

Section: Additive Route: Fibres and Particles Reinforcementmentioning

confidence: 91%

“…While the compressive strength increased by about 52% after adding 6 wt% of non-modified aramid fibres, the improvement of 67% was obtained for modified aramid fibres in the same amount, which supported the efficiency of the surface modification. In opposition, Ma et al [85] have reported a that the addition of 4 wt% modified wood fibres decreased the compressive strength by 36%.…”

Section: Additive Route: Fibre Reinforcementmentioning

confidence: 95%

“…Unfortunately, the final foams showed decreased compressive and flexural strengths of 26 and 27%, respectively, due to the high amount of additives. In another study, they success to maintain LOI stable by adding modified wood fibres although wood fibres are flammable [85].…”

Section: Additive Route By Addition Of Inorganic Fibres and Particlesmentioning

confidence: 98%

See 2 more Smart Citations

Phenolic foams: A review of mechanical properties, fire resistance and new trends in phenol substitution

Mougel

Garnier²,

Cassagnau

et al. 2019

Polymer

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Section: Additive Route: Fibres and Particles Reinforcementmentioning

confidence: 91%

Section: Additive Route: Fibre Reinforcementmentioning

confidence: 95%

See 1 more Smart Citation

Phenolic foams: A review of mechanical properties, fire resistance and new trends in phenol substitution

Mougel

Garnier²,

Cassagnau

et al. 2019

Polymer

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“…4. For DOPO, the signal around 6.56 to 8.86 ppm was corresponded to the phenyl protons [28][29][30][31]. For CNSL, the chemical shifts of H a , H b , H c , H d and H e were observed at 0.97 ppm, 1.38 ppm, 2.10 ppm, 1.64 ppm and 2.60 ppm respectively, and the signal around 5.44 ppm (H f ) was corresponded to double bonds protons [10].…”

Section: H Nmr Of Dopo-g-cnslmentioning

confidence: 99%

Synthesis and Characterization of DOPO-g-CNSL and Its Effect on the Properties of Phenolic Foams

Ma¹,

Gong²,

Xie³

et al. 2019

Journal of Renewable Materials

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In order to improve the mechanical properties without reducing its flame retardancy of phenolic foams (PFs), 9, 10-dihydro-9-oxa-10phosphaphenanthrene-10-oxide (DOPO) was introduced in the structure of cashew nut shell liquid (CNSL) to improve its flame retardant, and the product of DOPO grafting CNSL (DOPO-g-CNSL) was obtained to modify phenolic resin, and to prepare DOPO-g-CNSL modified PFs (DCMPFs). The structures of DOPO-g-CNSL were verified by Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance (1 H-NMR). Compared with CNSL, thermal stability of DOPO-g-CNSL was decreased and Ti decreased by 3.53%, but the residual carbon (800°C) was increased by 35.05%. Compared with pure PF, the mechanical properties, toughness and flame retardancy of DCMPFs were increased when the ratio of DOPO-g-CNSL to phenol (DOPO-g-CNSL/P) was no more than 10%. With the dosage of DOPO-g-CNSL/P increased, Ti of DCMPFs was slightly increased, but the carbon residues (800°C) were almost unchanged. And the cell sizes of DCMPFs were basically the same as the pure PF. By comprehensive analysis, the suitable dosage of DOPO-g-CNSL/P was no more than 10%.

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Preparation of melamine–formaldehyde resin grafted by (3‐aminopropyl) triethoxysilane for high‐performance hydrophobic materials

Gao

Liu

Wang

et al. 2019

J of Applied Polymer Sci

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Aiming at meeting the specific market demands and expanding the downstream application of melamine-formaldehyde (MF) resins, a series of (3-aminopropyl) triethoxysilane (APTES) grafted MF (MF-Si) resins were synthesized via an effective method that minimized the hydrolysis of APTES and overcame the polarity discrepancy of APTES with MF resin matrix. The structure of MF-Si resins was characterized by FTIR spectroscopy, Raman spectroscopy, 1 H nuclear magnetic resonance (NMR), and solid state 13 C NMR. It was found that APTES moieties in MF-Si materials afforded increased hydrophobicity, water resistance, and the thermal stability was not affected. With the increasing amount of APTES, the water contact angle of MF-Si films increased from 70.56 to 105.92 and the surface free energy decreased from 46.8 to 23.5 mN/m. The temperature of maximum weight loss rate (T dmax ) of MF-Si materials decreased slightly from 371.15 to 353.70 C and the ultimate residual weight of MF-Si materials increased from 12.51 to 30.04% at 800 C under N 2 .

show abstract

A novel DOPO-g-KH550 modification wood fibers and its effects on the properties of composite phenolic foams

Cited by 13 publications

References 40 publications

Phenolic foams: A review of mechanical properties, fire resistance and new trends in phenol substitution

Phenolic foams: A review of mechanical properties, fire resistance and new trends in phenol substitution

Synthesis and Characterization of DOPO-g-CNSL and Its Effect on the Properties of Phenolic Foams

Preparation of melamine–formaldehyde resin grafted by (3‐aminopropyl) triethoxysilane for high‐performance hydrophobic materials

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