Liaoning High Performance Resin Engineering Research Center

Dalian, China

Liaoning High Performance Resin Engineering Research Center

Dalian, China
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Wang J.,Dalian University of Technology | Wang J.,Liaoning High Performance Resin Engineering Research Center | Li G.,Dalian University of Technology | Jian X.,Dalian University of Technology | And 2 more authors.
Polymer International | Year: 2012

A series of novel photo-crosslinkable fluorinated poly(phthalazinone ether)s containing 1,1-diphenylethylene segments in the polymer main chain, used for optical waveguide materials, were synthesized by polycondensation reaction of decafluorobiphenyl with a mixture of 4-(4-hydroxylphenyl)(2H)-phthalazin-1-one (DHPZ), 4,4-(hexafluoroisopropylidene)diphenol and 1,1-bis(4-hydroxyphenyl)ethylene (BHPE) as co-reactant. The feed ratio of DHPZ to total bisphenols varied from 0 to 80 mol%, while that of BHPE remained at 20 mol% for all polymers. The obtained copolymers show good solubility in some common polar organic solvents. The resulting polymers were photo-crosslinked after UV irradiation for 10 min in the presence of a photoinitiator. The cured polymers show good chemical resistance, high thermal stability (temperatures of 1% mass loss after curing of 472-496 °C under nitrogen) and high glass transition temperatures (160-249 °C) which could be further increased by about 10 °C after photochemical crosslinking. By adjusting the copolymerizing bisphenol content, the refractive indices of transverse electric and transverse magnetic modes (at 1550 nm) of films of the polymers were exactly tuned in the range 1.5029-1.5661 and 1.4950-1.5502, respectively. The propagation losses of the cured films were measured and found to be less than 0.3 dB cm -1 at 1550 nm, indicating the promise of these materials for passive optical waveguide devices. © 2011 Society of Chemical Industry.


Shangguan J.,Liaoning Province Key Laboratory of Polymer Science and Engineering | Liao G.,Liaoning Province Key Laboratory of Polymer Science and Engineering | Liao G.,Dalian University of Technology | Liu C.,Liaoning Province Key Laboratory of Polymer Science and Engineering | And 5 more authors.
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | Year: 2012

The blends of bismaleimide resin/poly(phthalazinone ether nitrile ketone) (BMI/PPENK) were prepared by the solvent method. The curing kinetics of PPENK/BMI blends was investigated by DSC, and the curing activation energy of the blend was 85.8 kJ/m 2. The effect of the PPENK content on the mechanical property of the blends was studied by the impact and tensile test. The impact strength of blends is in the range of 1.83 kJ/m 2~2.95 kJ/m 2, the tensile strength is between 68 MPa and 84 MPa, and the tensile modules ranges from 1.14 GPa to 1.53 GPa. The toughening mechanism of blends was analyzed by SEM, and the plastic deformation occurred during the fracture of the modified BMI resins. The thermal properties of blends were investigated by TGA. The blends have good thermal stability with 5% weight loss temperature in the range of 420°C~426°C under nitrogen atmosphere.


Guo Y.-Y.,Dalian University of Technology | Qi J.-L.,Dalian University of Technology | Wang J.-Y.,Dalian University of Technology | Wang J.-Y.,Liaoning High Performance Resin Engineering Research Center | Jian X.-G.,State Key Laboratory of Fine Chemical
Acta Polymerica Sinica | Year: 2013

The poly (arylene ether nitrile) s containing phthalazinone moiety end-capped by hydroxyl group (PPEN-OH) were successfully synthesized by the nucelophilic displacement reaction of the bisphenol-like monomer, 4-(4-hydroxyphenyl)-phthlazin-1 (2H) -one (DHPZ) and 2, 6-difluorobenzonitrile (DFBN) using tetramethylene sulfone as solvents and K2C03 as catalyst at 190 °C with stirring for 5 h. Then the reaction of PPEN-OH and allyl bromide in the presence of tetramethylene sulfone as solvent was carried out, following the hydrosilylation of methyltrimethoxysilane with the solvents of tetrachloroethane and the catalyst of 4A-Pt at 105 °C with stirring for 23 h to get trimethoxysilane endcapped PPEN (PPEN-Si). Then the fluorine silicone hybrid material (PPEN-6-FPS0) was prepared from triethoxy-1H, 1H, 2H, 2H-tridecafluoro-n-octylsilane, PPEN-Si and diphenylsilanediol using N-methyl-pyrrolidone as solvents and barium-hydroxide monohydrate as catalyst at room temperature with stirring for 36 h. The effects of reaction temperature and reaction time on the yield of target product were investigated. The structures of copolymers obtained were comfirmed by FTIR, H-NMR and F-NMR, respectively. The film was fabricated from the SiO2 modified by (heptadecafluoro-1, 1, 2, 2-tetradecyl) trimethoxysilane and the resulting PPEN-6-FPS0 at the weight ration of 1: 1. The thin film was dried under vacuum at the fixed temperature procedures. The surface morphology of the thin film was observed using scanning electron microscope. The film presented micro-nano rough microtextures. The contact angle of the film observed directly by DSA 100 was up to the maximum of 159°. The adhesion of the film was one grade by QFZ adherometer. The results indicate that this hydrophobic coating is a prospective candidate for the application of aviation, building, environmental protection and so on.


Li G.,Dalian University of Technology | Wang J.,Dalian University of Technology | Wang J.,Liaoning High Performance Resin Engineering Research Center | Yu G.,Dalian University of Technology | And 4 more authors.
Polymer | Year: 2010

It is necessary to introduce cross-linkable groups onto polymer chains as the processability and thermal stability of the polymers for passive waveguide device applications are very dependent on their cross-linking capabilities. Herein a series of novel cross-linkable allyl-containing fluorinated poly(phthalazinone ether)s (Allyl-FPPEs) have been prepared by a modified polycondensation of 4-(4-hydroxylphenyl)(2H)-phthalazin-1-one (DHPZ), decafluorobiphenyl (DFBP), 4,4′-(hexafluoroisopropylidene)diphenol (6F-BPA), and 3,3′-diallyl-4,4′-dihydroxybiphenyl (DA-DHBP) for optical waveguide applications. The obtained random polymers were characterized by FT-IR, NMR and GPC. The resulting polymers having good solubility in polar organic solvents at room temperature, can be easily spin-coated into thin films with attracting optical quality, good thermal stabilities (the temperatures of 1% mass-loss after curing: 455-503 °C), and high glass transition temperatures (Tgs: 167-251 °C) which could further increase by about 20 °C after thermal cross-linking. The crosslinked polymer films exhibit good optical properties. By adjusting the feed ratio of the reactants, the refractive indices of TE and TM modes (at 1550 nm) could be well controlled in the range of 1.4998-1.5618 and 1.4954-1.5520, respectively. The optical losses of the crosslinked polymers possess rather low values, less than 0.3 dB/cm at 1550 nm. © 2010 Elsevier Ltd. All rights reserved.


Li G.,Dalian University of Technology | Wang J.,Dalian University of Technology | Wang J.,Liaoning High Performance Resin Engineering Research Center | Guixian S.,Dalian University of Technology | And 4 more authors.
Polymer Journal | Year: 2010

A series of novel fluorinated crosslinkable poly(phthalazinone ether)s bearing tetrafluorostyrene groups (FSt-FPPEs) was prepared by polycondensation from 4-(4′-hydroxyphenyl)-phthalazin-1(2 H)-one (DHPZ), decafluorobiphenyl, 4,4-(hexafluoroisopropylidene)diphenol (6F-BPA) and pentafluorostyrene (FSt) for optical waveguide applications. The obtained polymers exhibited good solubility in common organic solvents and could be easily cast into optical-quality thin films. The resulting polymers could be thermally crosslinked either at 160°C in the presence of a free radical initiator dicumyl peroxide under vacuum or at 280 °C in the absence of any initiator under vacuum. The polymers had high glass transition temperatures in the range 164-269 °C, which could be further increased by about 10 °C on thermal crosslinking. The crosslinked polymers had good thermal stabilities (the temperatures of 1% mass loss after curing ranged from 478 to 490 °C) and high glass transition temperatures. The crosslinked polymer films also exhibited good optical properties. By adjusting the feed ratio of the reactants, the refractive indices of transverse electronic and transverse magnetic modes (at 1550 nm) could be controlled well in the range of 1.4952-1.5625 and 1.4924-1.5538, respectively. The optical losses of the crosslinked polymers were rather low, <0.3 dB cm-1 at 1550 nm. © The Society of Polymer Science, Japan (SPSJ) All rights reserved.


Jin Q.F.,Dalian University of Technology | Jin Q.F.,Liaoning Normal University | Liao G.X.,Dalian University of Technology | Liao G.X.,Liaoning High Performance Resin Engineering Research Center | And 3 more authors.
Chinese Chemical Letters | Year: 2010

Trimethoxysilyl-functionalized PPEK (PKGS) films had been designed to serve as wear resistant coatings for silicon surfaces. These surface films were formed by a dip-coating technique applied to self-assembled monolayers (SAMs). The formation and wetting behavior of PKGS films were characterized by means of contact angle measurement. The friction coefficient of the film prepared is very low (about 0.1), and the anti-wear behavior is good, with a lack of failure after sliding over 1800 s. © 2010 Xi Gao Jian. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.


Yu G.-P.,Dalian University of Technology | Tong J.,Dalian University of Technology | Liu C.,Dalian University of Technology | Liu C.,Liaoning High Performance Resin Engineering Research Center | And 4 more authors.
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | Year: 2010

The thermal degradation of bipheny-based phenyl-s-triazine-containing poly(arylene ether)s (PE-TR) was investigated by the thermogravimetric analysis (TGA) and derivative thermogravimetric analysis (DTG) under N2 or air flow in dynamic heating conditions. The influence of the heating rate and the Nature of atmosphere on the thermal decomposition temperatures of PE-TR was studied. Thermal results from TGA and DTG indicate that PE-TR possesses excellent thermal and oxidative stability. The apparent activation energy (Ea) calculated by using Flynn-Wall-Ozawa and Friedman methods (291.19 kJ/mol, 286.83 kJ/mol), are in good agreement with that by using the Kissinger method (283.25 kJ/mol). The solid-state decomposition process is found to be a mechanism involving random nucleation with two nucleus on the individual particle (F2 mechanism) in terms of the Coats-Redfern method.


Han R.,Dalian University of Technology | Zhang S.,Dalian University of Technology | Zhang S.,Liaoning High Performance Resin Engineering Research Center | Xing D.,Dalian University of Technology | And 2 more authors.
Journal of Membrane Science | Year: 2010

Copoly(phthalazinone biphenyl ether sulfone) (PPBES) ultrafiltration (UF) membrane with low molecular weight cut-off (MWCO) possesses excellent thermal resistance and it is suitable to be utilized in dye wastewater treatment at high temperature. The rejection of polyethylene glycol (PEG1000) of the membrane was 100% while the flux was 232L/m2h at 20°C and 0.2MPa. It was showed that the rejections of NaCl and Na2SO4 were both 0%. The rejections of Congo Red (Direct Dye), Sulfur Black B (Sulfur Dye) and Gentian Violet (Anionic Dye) were all 100% while the rejections of C. I. Reactive Yellow 86 (Reactive Dye), C. I. Disperse Red 73 (Disperse Dye) and Acid Chrome Blue K (Cationic Dye) were 79%, 54% and 43%, respectively. The fluxes of the membrane during treatment were all higher than 87L/m2h at 20°C and 0.2MPa except for C. I. Disperse Red 73. Effect of inorganic salt concentration on membrane performance was investigated. Thermal resistance of the membrane was also evaluated with Sulfur Black B. It was found that the flux increased 4.5 times while the rejection did not decline when the operation temperature was raised from 20°C to 95°C. The membrane ran 20h at 90°C without the membrane performance decline which showed that the membrane had good thermal resistance. © 2010 Elsevier B.V.

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