scholarly journals Allyl glycidyl ether-modified animal glue binder for improved water resistance and bonding strength in sand casting

2021 ◽  
Vol 2 (2) ◽  
Author(s):  
Chen-chen Fan ◽  
Qian Tang
Keyword(s):  
Tensile Strength ◽  
Bonding Strength ◽  
Room Temperature ◽  
Water Resistance ◽  
Glycidyl Ether ◽  
Animal Glue ◽  
Practical Application ◽  
Foundry Industry ◽  
Dog Bone ◽  
Allyl Glycidyl Ether

This paper aims to develop a modified animal glue sand binder for foundry casting with improved water resistance and bonding strength. An efficient method is reported by using sodium hydroxide as the catalyst to improve the operability of animal glue binder and allyl glycidyl ether as the modifier to improve the water resistance and bonding strength. Sand specimens prepared using allyl glycidyl ether-modified animal glue binder were cured by compressed air at room temperature. The proposed method saves energy and is environmentally friendly and inexpensive. Compared with unmodified animal glue binder, standard dog bone sand specimens with allyl glycidyl ether-modified animal glue binder had higher tensile strength of 2.58 MPa, flowability of 1.95 g, better water resistance (a lower decrease in tensile strength at 25 °C and relative humidity of 60%), and good collapsibility. This allyl glycidyl ether-modified animal glue binder is suitable for practical application in the foundry industry.

Poly(alkylene Oxide) Rubbers

1964 ◽  
Vol 37 (1) ◽  
pp. 1-5 ◽  
Author(s):  
J. G. Hendrickson ◽  
A. E. Gurgiolo ◽  
W. E. Prescott
Keyword(s):  
Tensile Strength ◽  
Physical Properties ◽  
Propylene Oxide ◽  
Glycidyl Ether ◽  
High Grade ◽  
Oil Resistance ◽  
Compression Set ◽  
Alkylene Oxide ◽  
Allyl Glycidyl Ether

Abstract A high grade rubber was made by vulcanizing copolymers of propylene oxide and allyl glycidyl ether. The crude polymer contained both crystalline and amorphous fractions. The total polymer could be sulfur cured without fractionation or removing the catalyst—a partly hydrolized ferric alkoxide, resulting from the reaction of FeCl3 with propylene oxide. Variables in the vulcanization recipe were studied, and a tensile strength of 1980 psi with 560% elongation was obtained. Improved tear and oil resistance were observed as compared with SBR rubber. Other physical properties compared favorably with commencal rubbers, except for compression set.

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.

scholarly journals Benzoxazine Copolymers with Mono- and Difunctional Epoxy Active Diluents with Enhanced Tackiness and Reduced Viscosity

2021 ◽  
Vol 5 (9) ◽  
pp. 250
Author(s):  
Natalia V. Bornosuz ◽  
Roman F. Korotkov ◽  
Vyacheslav V. Shutov ◽  
Igor S. Sirotin ◽  
Irina Yu. Gorbunova
Keyword(s):  
Differential Scanning Calorimetry ◽  
Tensile Strength ◽  
Glass Transition ◽  
Room Temperature ◽  
Glycidyl Ether ◽  
Diglycidyl Ether ◽  
Scanning Calorimetry ◽  
Reduced Viscosity ◽  
Oscillatory Rheology ◽  
Active Diluents

The influence of epoxy active diluents, 1,4-butanediol diglycidyl ether (BD) and furfuryl glycidyl ether (FUR), in the mixtures with benzoxazine monomer based on bisphenol A, formaldehyde and m-toluidine (BA-mt), on the properties of a matrix was disclosed in this work. Resins were modified to achieve good tackiness at room temperature and reduced viscosity. The influence of mono- and difunctional modifiers on the process of curing was studied by way of differential scanning calorimetry and oscillatory rheology. The addition of BD and FUR shifted the curing peak to higher temperatures and significantly reduced viscosity. Preferable tackiness at ambient temperature was achieved with 10 phr of epoxy components in mixtures. However, cured blends with difunctional epoxy BD had an advantage over monofunctional FUR in enhanced tensile strength with remaining glass transition temperature at the level of neat benzoxazine (217 °C).

Wide-Gap Brazing of IN738 and the Bonding Strength Using Ni-Based Filler Metal Powders

2007 ◽  
Vol 345-346 ◽  
pp. 1449-1452 ◽  
Author(s):  
Yong Hwan Kim ◽  
Il Ho Kim ◽  
K.T. Kim ◽  
Seung Y. Shin
Keyword(s):  
Tensile Strength ◽  
Metal Powder ◽  
Bonding Strength ◽  
Room Temperature ◽  
Filler Metal ◽  
Eutectic Structure ◽  
Metal Powders ◽  
Powder Mixing ◽  
Mixing Ratios ◽  
Wide Gap

The microstructure and bonding strength of the wide-gap region brazed with different filler metal powder (BNi-3 and DF 4B) and various powder mixing ratios of additive powder to filler metal powder were investigated. The microstructure characterization showed that Cr borides with a blocky morphology were existed in the brazed region in both filler metal powder. The bonding strength of the wide-gap region brazed with 60 wt.% IN738 additive and 40 wt.% DF 4B powder exhibited 92% tensile strength of IN738 superalloy at room temperature. The Cracks in the wide-gap brazed region initiated at the intermetallic compound and eutectic structure, and then propagated through them.

Allyl Glycidyl Ether-Based Polymer Electrolytes for Room Temperature Lithium Batteries

2013 ◽  
Vol 46 (22) ◽  
pp. 8988-8994 ◽  
Author(s):  
Katherine P. Barteau ◽  
Martin Wolffs ◽  
Nathaniel A. Lynd ◽  
Glenn H. Fredrickson ◽  
Edward J. Kramer ◽  
...  
Keyword(s):  
Lithium Batteries ◽  
Polymer Electrolytes ◽  
Room Temperature ◽  
Glycidyl Ether ◽  
Allyl Glycidyl Ether

Study on Bonding Properties of Birch with API Adhesive

2010 ◽  
Vol 150-151 ◽  
pp. 551-555
Author(s):  
Yan Hua Zhang ◽  
Ji You Gu ◽  
Yun Wu Zheng ◽  
Hai Yan Tan ◽  
Ming Wei Di ◽  
...  
Keyword(s):  
Chemical Reaction ◽  
Bonding Strength ◽  
Room Temperature ◽  
Polyvinyl Acetate ◽  
Composite System ◽  
Water Resistance ◽  
Experimental Results ◽  
Birch Wood ◽  
Bonding Properties ◽  
Analyze Structure

This paper aims at making a study on the bonding properties of birch with API adhesive. A non-formaldehyde adhesive to improve the bonding strength and water resistance of the emulsion was investigated. The adhesive was a composite system that was formulated from polyvinyl acetate (PVAc) emulsion, PVA, isocyanate and some other additives. In this study the effect of isocyanate at room temperature on the curing behavior of PVAc was investigated. A XPS technique has been established to analyze structure of crosslinking in bonding interface. The experimental results indicated that the occurrence for chemical reaction between PVAc-based API adhesive and birch wood.

scholarly journals Effects of Substitution of Y with Yb and Ce on the Microstructures and Mechanical Properties of Mg88.5Zn5Y6.5

Metals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 31
Author(s):  
Hongxin Liao ◽  
Taekyung Lee ◽  
Jiangfeng Song ◽  
Jonghyun Kim ◽  
Fusheng Pan
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Yield Strength ◽  
Creep Resistance ◽  
Room Temperature ◽  
High Thermal Stability ◽  
Long Period ◽  
Microstructures And Mechanical Properties

The microstructures and mechanical properties of the Mg88.5Zn5Y6.5-XREX (RE = Yb and Ce, X = 0, 1.5, 3.0, and 4.5) (wt.%) alloys were investigated in the present study. Mg88.5Zn5Y6.5 is composed of three phases, namely, α-Mg, long-period stacking ordered (LPSO) phases, and intermetallic compounds. The content of the LPSO phases decreased with the addition of Ce and Yb, and no LPSO phases were detected in Mg88.5Zn5Y2.0Yb4.5. The alloys containing the LPSO phases possessed a stratified microstructure and exhibited excellent mechanical properties. Mg88.5Zn5Y5.0Ce1.5 exhibited the highest creep resistance and mechanical strength at both room temperature and 200 °C, owing to its suitable microstructure and high thermal stability. The yield strength of Mg88.5Zn5Y5.0Ce1.5 at room temperature was 358 MPa. The ultimate tensile strength of Mg88.5Zn5Y5.0Ce1.5 at room temperature and 200 °C was 453 MPa and 360 MPa, respectively.

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