Preparation of excellent-water-resistance water-borne alkyd/acrylic hybrid coatings with varied maleic anhydride content

2021 ◽  
Vol 161 ◽  
pp. 106537
Author(s):  
Siming Ouyang ◽  
Zecheng Lin ◽  
Linyang Cao ◽  
Yongbo Ding ◽  
Liang Shen
Keyword(s):  
Maleic Anhydride ◽  
Water Resistance ◽  
Hybrid Coatings ◽  
Water Borne

Dihydroxypropyl-Terminated Polysiloxane Modified UV Cure Water-Borne Polyurethane

2011 ◽  
Vol 197-198 ◽  
pp. 1281-1284 ◽  
Author(s):  
Sui Lian Luo ◽  
Chao Dong Liu ◽  
Guo Fei Gong
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Water Resistance ◽  
Improve Water Resistance ◽  
Water Borne

In this paper three kind of water borne polyurethane are synthesized. FTIR identify the structure of 2-hydroxypropyl acrylate terminated water borne polyurethane with block PDMS. It is found that Si-WPUA has excellent water-resistance, good toughness, and good tensile strength. So, the work has been found the method which could improve water resistance and not decrease mechanical properties. It is hoped that the modified polyurethane could be used as coatings superior to the solvent-borne systems.

scholarly journals Synthesis of Lignin-Based Polyacid Catalyst and Its Utilization to Improve Water Resistance of Urea–formaldehyde Resins

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 175 ◽  
Author(s):  
Shishuai Gao ◽  
Yupeng Liu ◽  
Chunpeng Wang ◽  
Fuxiang Chu ◽  
Feng Xu ◽  
...  
Keyword(s):  
Maleic Anhydride ◽  
13C Nmr ◽  
Water Resistance ◽  
Urea Formaldehyde ◽  
Medium Density Fiberboard ◽  
Formaldehyde Emission ◽  
Medium Density ◽  
1H And 13C Nmr ◽  
Uf Resin ◽  
Improve Water Resistance

In this study, a lignin-based polyacid catalyst was synthesized via two steps to enhance water resistance of urea–formaldehyde (UF) resins. The first steps involved a hydroxymethylation reaction to increase the hydroxyl content in lignin. Then, hydroxymethylated lignins were reacted with maleic anhydride to form maleated lignin-based polyacids. The acid groups were expected to function as acid catalysts to catalyze the curing process of UF resin. In order to elucidate the structural variation, 3-methoxy-4-hydroxyphenylpropane as a typical guaiacol lignin structural unit was used as a model compound to observe the hydroxymethylation and the reaction with maleic anhydride analyzed by 1H and 13C NMR. After the structural analysis of synthesized lignin-based polyacid by FTIR and 13C NMR, it was used to produce UF resin as an adhesive in plywood and medium density fiberboard (MDF) production, respectively. The results showed that when the addition of lignin-based polyacid was 5% in plywood, it could effectively improve the water resistance of UF resins as compared to commercial additive NH4Cl. It also exhibited a lower formaldehyde emission. Like plywood, lignin-based catalysts used in medium density fiberboard production could not only maintain the mechanical properties, but also inhibit the water adsorption of fiberboards.

The Influence of AlkaliTreatment and Compatibilizer Addition on the Tensile Properties and Water Absorption Behavior of Polypropylene/Kenaf Fiber Composites

2012 ◽  
Vol 626 ◽  
pp. 449-453 ◽  
Author(s):  
Razaina Mat Taib ◽  
Nurul Mujahidah Ahmad Khairuddin ◽  
Zainal Arifin Mohd Ishak
Keyword(s):  
Tensile Strength ◽  
Maleic Anhydride ◽  
Water Absorption ◽  
Tensile Properties ◽  
Room Temperature ◽  
Water Resistance ◽  
Alkali Treatment ◽  
Tensile Modulus ◽  
Fiber Composites ◽  
Kenaf Fiber

Composites of polypropylene (PP) and kenaf fiber (KF) were immersed in water at room temperature. The fiber was treated with alkaline solution. A compatibilizer, maleic anhydride-grafted polypropylene (MAPP) was added in some composite formulations. Composite with alkali treated fibers (KFA) showed similar tensile strength but lower tensile modulus than the composite with untreated fiber, KF. Addition of MAPP was crucial to improve the tensile properties and water resistance of either PP/KF or PP/KFA composites. Alkali treatment adversely affected the water absorption behavior of PP/KF composite.

Maleic Anhydride Coating for Strontium Aluminate-Based Phosphors

2009 ◽  
Vol 79-82 ◽  
pp. 807-810
Author(s):  
Sheng Fei Yu
Keyword(s):  
Coordination Chemistry ◽  
Maleic Anhydride ◽  
Water Resistance ◽  
Emission Spectra ◽  
Coordination Bond ◽  
Moist Air ◽  
Strontium Aluminate ◽  
Chemistry Method ◽  
A Minor ◽  
The Cost

Strontium aluminate-based phosphors SrAl2O4:Eu2+,Dy3+ (SAO-ED) are coated directly by the interfacial coordination chemistry method with maleic anhydride to prevent their hydrolysis in moist air. SEM, XPS, TG and DSC methods are used to characterize the coating. The results showed SAO-ED phosphors coordinated with maleic anhydride by the coordination bond and . The introduction of maleic anhydride doesn’t change the excitation and emission spectra of SAO-ED phosphors, which is proved by the photoluminescence measurement. The SAO-ED phosphor coated with 30 wt. % maleic anhydride has higher water-resistance at the cost of a minor loss of persistent phosphorescence than that of SAO-ED phosphor.

Fabrication, characterization, and application of polyester/wood flour composites

2017 ◽  
Vol 37 (7) ◽  
pp. 689-698 ◽  
Author(s):  
Chin-San Wu ◽  
Hsin-Tzu Liao
Keyword(s):  
Mechanical Properties ◽  
Antibacterial Activity ◽  
Thermal Properties ◽  
Composite Materials ◽  
3D Printing ◽  
Maleic Anhydride ◽  
Water Resistance ◽  
Wood Flour ◽  
Three Dimensional ◽  
Ester Formation

Abstract The mechanical properties, thermal properties, antibacterial activity, and fabrication of three-dimensional (3D) printing strips of composite materials containing polyhydroxyalkanoate (PHA) and wood flour (WF) were evaluated. Maleic anhydride (MA)-grafted PHA (PHA-g-MA) and WF were used to enhance the desired characteristics of these composites. The PHA-g-MA/WF composites had better mechanical properties than the PHA/WF composites did. This effect was attributed to a greater compatibility between the grafted polyester and WF. Additionally, the PHA-g-MA/WF composites provided higher quality 3D printing strips and were more easily processed because of ester formation. The water resistance of the PHA-g-MA/WF composite was greater than that of PHA/WF. Moreover, WF enhanced the antibacterial activity of the composites. Composites of PHA-g-MA or PHA containing WF had better antibacterial activity.

Barrier properties of organic-inorganic hybrid coatings based on polyvinyl alcohol with improved water resistance

2009 ◽  
Vol 50 (1) ◽  
pp. 144-153 ◽  
Author(s):  
Matteo Minelli ◽  
Maria Grazia De Angelis ◽  
Ferruccio Doghieri ◽  
Marco Rocchetti ◽  
Angelo Montenero
Keyword(s):  
Polyvinyl Alcohol ◽  
Water Resistance ◽  
Barrier Properties ◽  
Hybrid Coatings ◽  
Inorganic Hybrid

PDMS-modified poly(styrene-alt-maleic anhydride)s as water-borne coatings based on surfactant-free latexes

2013 ◽  
Vol 76 (12) ◽  
pp. 1720-1725 ◽  
Author(s):  
I.D. Gunbas ◽  
M.E.L. Wouters ◽  
R.A.T.M. van Benthem ◽  
C.E. Koning ◽  
B.A.J. Noordover
Keyword(s):  
Maleic Anhydride ◽  
Water Borne

scholarly journals Enhancing properties of PC/PA blends via compatibilization of olefin-maleic-anhydride copolymer based additives in masterbatch form

2021 ◽  
Vol 28 (8) ◽  
Author(s):  
T. Kovács ◽  
L. Simon-Stőger ◽  
B. Heller ◽  
Cs. Varga
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Water Resistance ◽  
Raw Materials ◽  
Polymeric Materials ◽  
High Moisture ◽  
Polymer Blending ◽  
Ft Ir ◽  
Maleic Anhydride Copolymer ◽  
Ft Ir Spectroscopy

AbstractPolymer blending has been a simple and efficient way for designing and controlling the performance of polymeric materials using easily available types. Both polycarbonate and polyamide have excellent mechanical properties and thermal stability but their disadvantages such as limited chemical or water resistance can be eliminate by tailoring them. Main difficulties in processing of PC/PA blends are the poor compatibility and high moisture adsorption capacity of the two raw materials complicating processing and also deteriorating mechanical properties of the products. Compatibilizing additives such as olefin-maleic-anhydride copolymer based compounds used in the experimental work can help to overcome the abovementioned difficulties. To determine the processing conditions of the raw materials several drying temperatures have been tested and thermal degradation has been examined by FT-IR spectroscopy. Experimental compatibilizing additives based on an olefin-maleic-anhydride copolymer have been investigated to enhance mechanical properties of the blends prepared by extrusion moulding. Mechanical, rheological, SEM and FT-IR measurements have been performed and at least one additive has been found to be efficient in improving selected properties.

Effect of Maleic Anhydride (MA) on Properties of Recycled High Density Polyethylene/Ethylene Vinyl Acetate/Egg Shell Powder (rHDPE/EVA/ESP) Composites

2014 ◽  
Vol 554 ◽  
pp. 91-95
Author(s):  
Ramli Nur Farahana ◽  
A.G. Supri ◽  
Pei Leng Teh
Keyword(s):  
Maleic Anhydride ◽  
Vinyl Acetate ◽  
High Density Polyethylene ◽  
Interfacial Adhesion ◽  
Water Resistance ◽  
Ethylene Vinyl Acetate ◽  
High Density ◽  
The Difference ◽  
Egg Shell ◽  
Shell Powder

The difference in polarity of recycled high density polyethylene (rHDPE) and ethylene vinyl acetate (EVA) blends leads to poor mechanical properties (Atul Rajan, 2013). Present works aim at finding the effects of maleic anhydride on the mechanical, morphological, and water resistance properties of rHDPE/EVA/ESP blends. It is shown that there is a significant improvement on tensile strength, interfacial adhesion between components, and water absorption resistance of adding maleic anhydride (MA) to rHDPE/EVA/ESP blends. This study may suggest that the MA can act as compatibilizer to enhance the interfacial interaction between the rHDPE and EVA matrix in the rHDPE/EVA/ESP composites.

Modification of Unsaturated Polyester Resin by Methyl-α-Eleostearate-Maleic Anhydride Adduct

2015 ◽  
Vol 1088 ◽  
pp. 467-471
Author(s):  
Jin Hua Zhou ◽  
Ni Li ◽  
Wen Jie Ma ◽  
Jing Yang ◽  
Han Zhou Sun
Keyword(s):  
Tensile Strength ◽  
Maleic Anhydride ◽  
Heat Resistance ◽  
Water Resistance ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Decomposition Temperature ◽  
Unsaturated Polyester Resin ◽  
Solvent Resistance ◽  
Film Forming

Unsaturated polyester resin (UPR) is one of the film-forming resins commonly used for preparation of coatings. However, the general type UPR has some disadvantages which limit its application such as poor water resistance, solvent resistance, heat resistance and mechanical properties. To improve common UPR’s comprehensive performance, methyl-α-eleostearate-maleic anhydride adduct (MEMAA), a derivative from Tung oil, was prepared and introduced into UPR system to form MEMAA modified UPR (M-UPR). Influences of MEMAA’s dosage in M-UPR on water and toluene absorption and tensile strength of M-UPR were investigated. The thermal property and morphology of M-UPR were also studied by TGA and SEM, respectively. Experimental results show that the water resistance, solvent resistance and tensile strength of UPR have been improved a lot and the heat resistance of UPR also has a certain degree of improvement after UPR’ being modified by MEMAA. Compared with the common UPR film, when the dosage of MEMAA is 9% of UPR’s mass, the water absorption, toluene absorption of M-UPR film are decreased by 21.0% and 18.6%, respectively, and whereas, the tensile strength and thermal decomposition temperature of UPR film are increases by 14% and 20 oC.

Sign in / Sign up

Export Citation Format

Share Document