21 June 2016
21 June 2016
Michelman has introduced Hydrosize EP876, a high molecular weight epoxy-based fibre sizing for PBT (Polybutylene Terephthalate) and thermoset composite manufacturing applications.
Michelman explains that the new grade of Hydrosize can also be used as a binder in nonwoven applications, and complements its wide selection of fibre sizings and binders for thermoplastic applications. As a water-based, formaldehyde free dispersion, Hydrosize EP876 is described as an environmentally friendly and eliminates the use of flammable solvents. Michelman explains that it can be used with glass, carbon and natural fibres, produces good strand integrity, and offers good chopping behaviour.
According to Mr. Gilles LeMoigne, Global Marketing Manager, Industrial Manufacturing Group, at Michelman, “Hydrosize EP876 has shown to be a very versatile new dispersion. It’s an excellent sizing and also exhibits a natural tendency to be sticky, which makes it particularly effective as a binder. When used as a sizing on textiles, it facilitates more efficient wet out on the fibres, when impregnating with epoxy resins.”
Known primarily for its flagship brand Hydrosize, Michelman adds that film forming dispersions optimise the surface chemistry of reinforcement fibres that are integral to high performance composites. The company’s diverse product range is optimised for a broad range of thermoplastic and thermoset resins, including high temperature matrices. Hydrosize is applied during the manufacturing process of chopped or continuous strand fibreglass, carbon fibre, natural fibres and fillers, or post-applied when making non-wovens and composite pre-pregs.
Grades are specifically engineered for many thermoplastic resins including polypropylene and polyamide, as well as various thermoset resins such as epoxy and polyurethane. Through the development and use of proprietary technologies, Michelman also offers grades capable of performing in high temperature thermoplastics such as PPS and PEEK.
Solvay has celebrated the groundbreaking of its Greenville, Texas, US, manufacturing footprint expansion that increases the site’s resin mixing capacity to meet the growing needs of commercial and military aerospace composite customers.
Aimplas is participating in the European project Mat4Rail: Designing the Railway of the Future: Fire Resistant Composite Materials and Smart Modular Design.
One of the most challenging applications for methyl ethyl ketone peroxides (MEKP) occurs in gelcoats, reports Brazilian company Polinox. Hybrids of resins and pigments that protect and finish composite parts, gelcoats undergo important changes in their performance if the peroxide exhibits, for example, a high concentration of water. The company says defects such as roughness and early yellowing of the laminate can be avoided with the adoption of peroxides such as its Brasnox DM50.