نتایج جستجو برای: epoxy resins

تعداد نتایج: 26630  

2008
H Ku F Cardona D Rogers A Vandenbroucke

Low cost composite materials are widely used in civil and structural engineering applications. This project uses EPON to plasticize a commonly used resin, epoxy resin to lower the cost of the composite and to find out the mechanical and thermal properties of the plasticized epoxy resin to see if it is suitable for the said applications. Three point bending tests were carried out to evaluate the...

Journal: :Journal of Chemical Education 1959

2017
Moon il Kim Suhyun Kim Taehee Kim Dong Koo Lee Bongkuk Seo

Liquid epoxy resins have received much attention from both academia and the chemical industry as eco-friendly volatile organic compound (VOC)-free alternatives for applications in coatings and adhesives, especially in those used in households. Epoxy resins show high chemical resistance and high creep resistance. However, due to their brittleness and lack of thermal stability, additional fillers...

2017
Xiaoxing Zhang Yunjian Wu Xiaoyu Chen Hao Wen Song Xiao

High temperatures caused by partial discharge results in the decomposition of insulating epoxy resins in electrical equipment. In this paper, the ReaxFF force field is used to investigate the decomposition process of epoxy resins cured by anhydride and the formation mechanisms of small-molecule gases. Results show that the initiation reaction is the cleavage of an ester bond linked with an epox...

2015

175.210 Acrylate ester copolymer coating. 175.230 Hot-melt strippable food coatings. 175.250 Paraffin (synthetic). 175.260 Partial phosphoric acid esters of polyester resins. 175.270 Poly(vinyl fluoride) resins. 175.300 Resinous and polymeric coatings. 175.320 Resinous and polymeric coatings for polyolefin films. 175.350 Vinyl acetate/crotonic acid copolymer. 175.360 Vinylidene chloride copolym...

Journal: :Contact dermatitis 2016
Lina Hagvall Ida B Niklasson Johanna Rudbäck Niamh M O'Boyle Eva Niklasson Kristina Luthman Ann-Therese Karlberg

BACKGROUND Measures to prevent occupational exposure to epoxy resins, including education, medical examination, and voluntary agreements between employers and workers, have not been effective enough to protect against skin sensitization. Therefore, alternatives to the major epoxy resin haptens that have been found to be less sensitizing in the local lymph node assay have been developed. OBJEC...

Improvement and stabilization of soils are widely used to improve the physical and mechanical properties of sandy soils. Despite the abundance of researchers that have been conducted on this topic to date, most of them have focused on dry soil. The effects of the existing water in the soil and different curing durations (curing environment) have not been investigated. In this study, different p...

2015
John E. McAlvin

Unsaturated polyester and epoxy vinyl ester resins have broad utility in composite applications. Today’s commercially available premium thermal performance vinyl ester resins are derived from novolac epoxies and methacrylic acid. These products combine low viscosity with shelf stable, yet fast curing properties, and enable fabricators to manufacture composite parts with rapid throughput for dem...

2008
H Ku F Cardona J - C Munoz D Rogers

In the earlier study about polymer network of phenolic and epoxies resins mixed with linseed oil, only Phencat 15 was used as the catalyst for the phenolic resin. In this study, Phencat 382 and UH (a urea hydrochloride solution based on a 1 : 1 mole ratio of urea : hydrochloric acid 32%) will be used as catalysts to study their effects on the polymer network of phenolic and epoxy resins mixed w...

2007
H S Ku F Siu P L Mok E Siores J A R Ball

In the printed circuit board assembly (PCBA) industry, integrated circuit (IC) dies are attached onto the printed circuit board (PCB) with epoxy. The die pads are first connected to the PCB tracks with gold or aluminium wires, utilising an ultrasonic wire-bonding machine. The dies are then coated with thermally cured epoxy. The chip-on-board (COB) is finally placed in an electrical oven for bak...

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