Binder based on nitrogen-containing epoxy resin with higher thermal- and water resistance

2018 ◽  
pp. 11-16
Author(s):  
D.Ye. Zimin ◽  
◽  
A.N. Blaznov ◽  
Keyword(s):  
Epoxy Resin ◽  
Water Resistance

INFLUENCE OF STRUCTURE OF POLYMERIC MATRIX ON STRUCTURE AND PROPERTY PRIMING COVERINGS

2021 ◽  
pp. 50-58
Author(s):  
V.A. Kuznetsova ◽  
◽  
V.G. Zheleznyak ◽  
S.L. Lonskii ◽  
N.A. Kovrizhkina ◽  
...  
Keyword(s):  
Water Absorption ◽  
Epoxy Resin ◽  
Phase Structure ◽  
Water Resistance ◽  
High Water ◽  
Physicomechanical Properties ◽  
Structure And Property ◽  
Organic Silicon ◽  
To Receive ◽  
Kinetics Of

Adhesion, physicomechanical properties, and also kinetics of water absorption of priming coatings on basis the E-41 epoxy resin modified by liquid Thiokol 1 and by Laproxide AF, and also their phase structure are investigated. As hardeners of primer compositions organic silicon ammine ASOT-2 and low-molecular polyamide PO-200 has been used. It is shown that use of the reactive modifier Laproxide AF and hardener ASOT-2 in the epoxy and thiokol film-formers allows to receive priming coating with uniform finely divided phase structure with low porosity and high water resistance.

Study on UV Curable Waterborne Polyurethane Modified by Epoxy Resin

2012 ◽  
Vol 249-250 ◽  
pp. 842-848 ◽  
Author(s):  
Wen Yuan Li ◽  
You Ming Cao ◽  
Xin Qi Zhou
Keyword(s):  
Epoxy Resin ◽  
Water Resistance ◽  
Waterborne Polyurethane ◽  
Raw Material ◽  
Toluene Diisocyanate ◽  
Step Method ◽  
Fractional Step Method ◽  
Uv Curable ◽  
The Fourier Transform ◽  
Different Content

In this paper, UV curable waterborne polyurethane emulsions were prepared by fractional step method using toluene diisocyanate (TDI), polyethylene glycol (PEG, MW=1000), α,α-dimethylol propionic acid (DMPA), 2-hydroxyethyl methacrylate (HEMA) as raw material, and UV-WPUs were modified with epoxy resin. The effect of different content of epoxy resin on the viscosity, the water resistance, and other properties was investigated. The synthesized polyurethane structure was confirmed by the Fourier transform infrared spectroscopy (FTIR). The FTIR analysis identified that the target product was expected epoxy modified waterborne UV polyurethane. And with –COOH content increasing, the emulsion viscosity of the WPU increased and the water absorption of the films increased; with epoxy content increasing, the viscosity of the WPU emulsion increased and the water resistance of the films was improved.

scholarly journals Water resistance of an epoxy resin cured with P3N3Cl3(N(CH3)2)3 and the effect of glass flake reinforcement.

1991 ◽  
Vol 40 (451) ◽  
pp. 458-463 ◽  
Author(s):  
Kiyohisa TAKAHASHI ◽  
Naomoto ISHIKAWA ◽  
Toshio KOHNO ◽  
Heung-Soo YOON
Keyword(s):  
Epoxy Resin ◽  
Water Resistance ◽  
Glass Flake

scholarly journals Synthesis and Characterization of Epoxy Resins-Modified Waterborne Polyurethane Emulsion

2021 ◽  
pp. 1-9
Author(s):  
Chenhan Zhuang ◽  
Weilan Xue ◽  
Zuoxiang Zeng
Keyword(s):  
Epoxy Resin ◽  
Water Resistance ◽  
Raw Materials ◽  
Waterborne Polyurethane ◽  
Polyurethane Film ◽  
Modification Method ◽  
Suitable Amount ◽  
Overall Performance ◽  
Better Than

Aqueous polyurethane emulsion was prepared with diphenylmethane diisocyanate (MDI), polybutylene adipate diol (PBA-1000) as main raw materials and 2, 2-dihydroxymethyl propionic acid (DMPA) as hydrophilic chain extender. On this basis, epoxy resin E-44 was introduced to modify the polyurethane prepolymer, and epoxy resin modified waterborne polyurethane emulsion was obtained. In order to obtain better performance waterborne polyurethane, the effect of DMPA content、the amount of epoxy resin added and modification method on the properties of polyurethane was discussed. The results show that when the DMPA content is 4wt%, the overall performance of the emulsion and the film is the best. And the addition of epoxy resin significantly improves the water resistance, solvent resistance and tensile strength of the waterborne polyurethane film, and its hardness and thermal stability are also improved to a certain extent. When the amount of epoxy resin added is 8wt%, the storage stability decreases significantly, the suitable amount of epoxy resin added is 6wt%. The overall performance of the film obtained by chemical modification is better than that of physical modification.

scholarly journals Facile synthesis of a flame retardant melamine phenylphosphate and its epoxy resin composites with simultaneously improved flame retardancy, smoke suppression and water resistance

RSC Advances ◽  
2018 ◽  
Vol 8 (68) ◽  
pp. 39214-39221 ◽  
Author(s):  
Yilun Shi ◽  
Zhengzhou Wang ◽  
Jian-an Zhou
Keyword(s):  
Flame Retardant ◽  
Epoxy Resin ◽  
Flame Retardancy ◽  
Water Resistance ◽  
Smoke Suppression ◽  
Resin Composites ◽  
Facile Synthesis ◽  
Epoxy Resin Composites

Melamine phenylphosphate (MPhP) was facilely synthesized and improved the flame retardancy, smoke suppression and water resistance of epoxy resin.

Inorganic-organic hybrid coating-encapsulated ammonium polyphosphate and its flame retardancy and water resistance in epoxy resin

2013 ◽  
Vol 38 (3) ◽  
pp. 312-322 ◽  
Author(s):  
Hongqiang Qu ◽  
Weihong Wu ◽  
Jianwei Hao ◽  
Chunzheng Wang ◽  
Jianzhong Xu
Keyword(s):  
Epoxy Resin ◽  
Flame Retardancy ◽  
Water Resistance ◽  
Hybrid Coating ◽  
Ammonium Polyphosphate ◽  
Organic Hybrid

Effects of Nano-Silica Addition on Water Absorption of Glass Fiber/Epoxy Composite

2013 ◽  
Vol 853 ◽  
pp. 40-45 ◽  
Author(s):  
Huey Ling Chang ◽  
Chih Ming Chen ◽  
Cheng Ho Chen
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Glass Fiber ◽  
Epoxy Resin ◽  
Water Resistance ◽  
Epoxy Composite ◽  
Dynamic Mechanical Properties ◽  
Nano Silica ◽  
Dynamic Mechanical ◽  
Water Absorption Test

Nanocomposite samples containing epoxy resin, glass fiber and 0~2 wt.% SiO2 nanopowder are prepared. The effects of SiO2 addition on the water absorption rate, glass transition temperature (Tg) and dynamic mechanical properties of the various samples are then observed. The water absorption of the nanocomposite specimens is then compared with that of pure glass fiber/epoxy composite specimens when tested in water. The results show that the addition of 2 wt.% SiO2 reduces the water absorption from 0.0704% to 0.0573%. The storage modulus with adding 2wt.% silica nanocomposite compared to the neat composite raises up 13.82%. Following the water absorption test, the mechanical properties of the samples are not obvious change. Therefore, the experimental results indicate that 2wt.% SiO2 addition is beneficial to the water resistance and dynamic mechanical properties of epoxy resin / glass fiber nanocomposites.

Mechanical stability of superhydrophobic epoxy/silica coating for better water resistance of wood

Holzforschung ◽  
2015 ◽  
Vol 69 (3) ◽  
pp. 367-374 ◽  
Author(s):  
Feng Liu ◽  
Zhengxin Gao ◽  
Deli Zang ◽  
Chengyu Wang ◽  
Jian Li
Keyword(s):  
Epoxy Resin ◽  
Water Resistance ◽  
Mechanical Stability ◽  
Water Immersion ◽  
Silica Coating ◽  
Immersion Test ◽  
Water Repellent ◽  
Functionalized Silica ◽  
Superhydrophobic Coating ◽  
Step Procedure

Abstract A three-step procedure has been developed for superhydrophobic coating on wood based on epoxy/silica materials in combination with hydrophobization. First, the epoxy resin is adhered to wood by immersing the samples into an epoxy resin acetone solution, then amino-functionalized silica particles are anchored by the epoxide groups, and finally, the created surface is modified by octadecyltrichlorosilane (OTS). The superhydrophobic surface not only is water repellent, as shown by the contact angle (CA) tests, but also decreases essentially the wood’s water absorption as determined by a 120-day water immersion test. The good mechanical stability of the coating was confirmed by a sand collision method.

scholarly journals Stress on Steel-concrete Composite Truss Joints Research Status and Application Overview

2020 ◽  
Vol 165 ◽  
pp. 04042
Author(s):  
Rui Zeng ◽  
Xinying Xie ◽  
Xuan Zhang
Keyword(s):  
Epoxy Resin ◽  
Water Resistance ◽  
High Strength ◽  
Chemical Corrosion ◽  
Ordinary Concrete ◽  
Research Status ◽  
Existing Problems ◽  
High Impact Strength ◽  
Compressive Resistance ◽  
Chemical Corrosion Resistance

Based on the comprehensive analysis of various stress research schemes for steel-concrete composite truss joints, the current research status of steel-concrete composite truss joints and epoxy resin concrete at home and abroad are systematically elaborated. The existing problems in the current composite truss joints are analyzed, and possible solutions are proposed. At present, the research on epoxy resin concrete has been very extensive. Epoxy resin concrete has high strength, good toughness, high impact strength, good chemical corrosion resistance, wear resistance, water resistance, frost resistance, tensile resistance and compressive resistance, which make it widely used in engineering. The problem of using epoxy resin concrete instead of ordinary concrete in steel-concrete composite truss is put forward, analyzed and discussed.

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