Abstract:
An organic molecular film forming apparatus 100 of forming an organic molecular film on a processing target object includes a processing chamber 11 that accommodates therein the processing target object; an organic material gas supplying unit 2 that supplies an organic material gas into the processing chamber 11; and an ultraviolet ray irradiating unit 13 that irradiates ultraviolet ray to at least one of the processing target object, the organic material gas supplied to the processing target object, and a film formed on a surface of the processing target object. At least one of the surface of the processing target object and the organic molecular film formed thereon is activated by irradiating the ultraviolet ray from the ultraviolet ray irradiating unit 13 to at least one of the processing target object, the organic material gas supplied to the processing target object, and the film formed on the processing target object.
Abstract:
A method of electrostatic spraying of a polymer surface involves oxidation and treating the oxidized surface with a polyamine and an electroconductivity modifying agent which contains a mono-carboxylic acid of from one to 12 carbon atoms.
Abstract:
A method for forming plastic packaging products (containers, tanks, etc.) that have a surface which has been subjected to a reactive gas atmosphere containing F2, Cl2, O2, O3, or SO3, oxidative acids, or mixtures thereof, at a temperature and gas partial pressure sufficient to increase the surface energy to at least 40 dynes/cm in order to provide adhesion of the barrier coating, or molding the container in plastic resin that was first surface modified by one of the preceding processes and molded under conditions such that a surface is developed on the container that has a minimum of 40 dynes/cm and which will adhere well to coatings. A barrier coating is then applied. The barrier coating may be of various polymers and blends, all meeting the critical requirements that the coating must adhere tenaciously to the surface, must have good barrier properties for the molecules which are to be contained, and must not diminish the impact resistance of the material to which it is applied.
Abstract:
Disclosed herein is a method for modifying a surface of a polymeric substrate, comprising providing a substrate, exposing at least one surface of the substrate to energy to form surface radical forming groups on the surface, treating the substrate with a fluid comprising at least one type of monomer and subjecting the treated substrate to activation energy to cleave at least some of the radical forming groups and initiate graft polymerization of the monomer. The graft polymerization initiated thereby does not require added photoinitiator.
Abstract:
The present invention provides a method of increasing the surface energy of an article having a polymeric surface increasing the relative amount of nitrogen atoms or oxygen atoms within a portion of the surface to form a nitrogen or oxygen enriched surface layer. The method of the invention is advantageously applied to a vehicle body frame to facilitate adhesion of a windshield. In another embodiment of the invention a method for inhibiting sealer redeposition is provided in which a plastic component in an automobile is treated prior to being subjected to the various paint preprocessing baths.
Abstract:
The present invention provides a process for forming an antifouling coating containing a photocatalyst and amorphous titanium peroxide with substantially no photocatalytic capability provided on a treatment face of a substrate having a surface made of a plastic or a rubber, including a step of performing dry treatment for introducing a hydrophilic group to the treatment face of the substrate, and a step of forming the antifouling coating by applying an aqueous coating agent containing the photocatalyst and the amorphous titanium peroxide with substantially no photocatalytic capability to the treatment face of the substrate after the dry treatment. It is preferable that the above-mentioned dry treatment is a plasma discharge treatment, corona discharge treatment or ultraviolet irradiation treatment. The present invention also provides an antifouling material having an antifouling coating formed by the process for forming an antifouling coating of the present invention.
Abstract:
A process using ultraviolet light having a wavelength of 160 to 500 nanometers without higher wavelengths and a high intensity between about 1 and 40 watts/cm2 to surface treat a carbon containing fiber is described. The treated fiber contains an enhanced amount of oxygen on the surface which significantly improves the bondability of the fiber in composites.
Abstract:
A method is described for the adhesion of a coating (3) on a surface (2) of a substrate (1) of a polyalkylene, such as polypropylene. The method comprises a first deep UV exposure in an inert atmosphere, and a second deep UV exposure in an oxidizing atmosphere. Between the two exposure steps, the substrate surface (2) is rinsed with an organic solvent. Such a rinsing step increases the adhesion of the coating and reduces the total exposure time.
Abstract:
A golf ball having a molded UV-light-exposure modified outer surface comprising a neutralized copolymer of ethylene and at least one of methacrylic acid and acrylic acid with an array of undamaged dimples and surrounding land areas disposed thereon, and a top coat firmly adhered to the UV-light-exposure modified outer surface, the top coat exhibiting resistance to cracking at both the dimples and land areas.
Abstract:
A method for improving the adhesive bonding of a top coat to a golf ball by subjecting an unfinished golf ball to ultraviolet light prior to application of a finish coat is disclosed. The golf balls so treated exhibit superior adhesion and avoid the need for application of a primer coat between the unfinished golf ball and the outer top coat.