A dip-formed article obtained by dip forming a dip-forming composition containing a latex of a carboxyl group-containing nitrile rubber, wherein at least one surface is surface treated, a thickness is 0.02 to 0.2 mm, a coefficient of dynamic friction of the surface treated surface is 0.5 or less, and a tensile strength after surface treatment is 30 MPa or more is provided.

This invention relates to an elastomeric article with improved lubricity and donnablity and reduced stickiness/tackiness. According to the methods of the invention, the internal surface of the elastomeric article is coated with a polyisoprene coating. The coating of the invention is formed from synthetic polyisoprene rubber that may or may not contain minor amounts of other components. The coating is preferably directly bonded to the underlying elastomeric article.

Disclosed are optically transparent super-hydrophobic materials, and methods for making and using the same, that can include an optically transparent polymeric layer having a first surface and an opposing second surface. At least a portion of the first surface has been plasma-treated with oxygen and a fluorine containing compound. The treated surface includes nano- or micro-structures that are etched into the first surface and that are chemically modified with the fluorine containing compound. The nano- or micro-structures have a height to width aspect ratio of greater than 1, and a water contact angle of at least 150. The optically transparent polymeric layer retains its optical transparency after said plasma-treatment. Due to their optical transparency, chemical and thermal robustness, weatherability, and self-cleaning performance, the super-hydrophobic materials disclosed are useful in high performing solar cell units in harsh semi-arid environments.

A method for rendering material surfaces, inert is provided. Exemplary surfaces include ceramic, metal or plastic surfaces. The method is accomplished with functionalized perfluorinated compounds for the formation of hyperhydrophobic structures on the surfaces to create inert surfaces. The inert surfaces produced or can be produced in this way have an extremely low surface energy, are resistant to deposits of substances or cells and have a very low coefficient of friction. Practical uses of the inert surfaces are also provided.

An elastomeric article is formed from a blend of nitrile rubber and polychloroprene rubber. The elastomeric article can be a glove, such as a medical exam glove. The elastomeric article is softer than a conventional nitrile elastomeric article. The elastomeric article is formed from a blended rubber latex emulsion of nitrile and polychloroprene. The blended rubber latex emulsion may be free of sulfur and vulcanization accelerators.

Provided are compositions and associated methods for producing elastomeric rubber gloves with improved strength and flexibility at desirable glove palm thicknesses. An example elastomeric rubber glove comprises a substrate formed from a composition comprising a synthetic rubber latex, and an ionic liquid. The ionic liquid may comprise a combination of one or more alkyl imidazole ionic salts. The composition may comprise one or more metal oxides, including at least one of zinc oxide, magnesium oxide, cadmium oxide, and aluminum oxide. The synthetic rubber latex compositions were found to yield a material with strength and flexibility characteristics comparable to natural latex gloves of a greater thickness. The described gloves may also be cured without the addition of Sulphur and other vulcanization or rubber accelerators, further reducing the risk of allergies and costs of production.

The present invention relates to a process for modifying the surface polarity of elastomeric rubber substrates to facilitate their cold bonding to other rubber substrates or non-elastomeric substrates of a different material, preferably metal, by chlorinating the elastomeric rubber substrate surface by treatment with a chloride-containing composition and a peroxymonosulfate-containing composition. Further aspects relate to the thus-obtained surface-modified rubber substrates, processes of bonding them to other substrates by use of an adhesive, as well as the thus-obtained bonded substrates.

Provided in the present application is a method for passivating an end group of a fluoroelastomer, which method is applied to the technical field of fluoroelastomers. The method comprises: S1, subjecting a fluoroelastomer to a devolatilization treatment by using a liquid or a supercritical fluid; S2, subjecting the devolatilized fluoroelastomer to a passivation treatment, and removing a passivation medium; and S3, washing the fluoroelastomer with deionized water, dehydrating the fluoroelastomer, and then drying same to obtain a devolatilized and passivated fluoroelastomer. By passivating the fluoroelastomer after liquid or supercritical fluid devolatilization, the obtained fluoroelastomer has less volatile components; by controlling the concentration of the passivation medium and the passivation time so as to control and adjust the end group passivation degree or the end group stabilization degree, the passivated fluoroelastomer has good processability and storage stability, and does not change color when in contact with a high-temperature and oxidation environment.