32 results about "High energy irradiation" patented technology

The invention relates to a process for forming permanent hydrophilic porous coatings onto a substrate, and porous membranes thereof. A membrane includes a base membrane; and an electron beam functionalized coating, the coating comprising a polyvinyl alcohol, a polyvinyl alcohol-polyvinyl amine copolymer, a polyvinyl amine, and derivatives thereof functionalized with an electron beam reactive group adapted to form a radical under high energy irradiation. Also disclosed are processes for forming the membrane.

A membrane includes a porous base membrane and a hydrophilic coating. The coating comprises a hydrophilic additive and a hydrophilic polymer derivatized with an electron beam reactive group adapted to form a radical under high energy irradiation. In some embodiments, the membrane comprises a fluoropolymer. Also disclosed are processes for forming the membrane.

The invention discloses a peroxidated heat-vulcanized silicone rubber resistant to irradiation and a preparation method thereof. The peroxidated heat-vulcanized silicone rubber comprises 100 parts of silicon rubber, 10-60 parts of anti-irradiation agent, 40-70 parts of gaseous white carbon black, 2-7 parts of concentrated crosslinker and 0.5-2.5 parts of vulcanizing agent according to parts by weight, and which is characterized in that the anti-irradiation agent is rare earth oxide. The peroxidated heat-vulcanized silicone rubber resistant to irradiation is prepared from a main material of methyl vinyl silicon rubber by modification; the rubber has strong environmental suitability, and the stretch strength reaches more than 6MPa and the tear strength reaches more than 20KN / m after 500KGy of irradiation; the rubber can be used for producing various rubber products resistant to irradiation such as rubber cushions, sealing parts, buffer elements, distance sleeves, diaphragms, and can be widely applied to the conditions abundant in high-energy irradiation such as aerospace, nuclear industry, electronic communication, chemical industry, medicine and ship; thus, the rubber has very good economic benefit and promotional value.

The invention relates to a hand tool, in particular in the form of a screwdriver or a file, comprising one or more working surfaces with a grooved profile. According to the invention, the grooves are formed by recesses which are created using high-energy irradiation and which have border ribs. The border ribs can be formed by the edges of a fusion which immediately solidifies into a dish-shaped structure.

The present invention provides a curable reactive silicone composition which has sufficient toughness and adhesive force to temporarily fix various base materials, even when in an uncured state, and has thermal melting properties, has excellent formability for example as a sheet, and furthermore rapidly cures as a result of high energy irradiation, enabling a high adhesive strength to be achieved; a method for producing a sheet of the compound; a cured product of the compound, having high adhesive strength due to pressure bonding; and uses of the above. A curable reactive silicone composition which comprises: (A) MQ resin; (B) a chain-structured organopolysiloxane which comprises at least two aliphatic unsaturated carbon-carbon bond-containing groups and which has a siloxane polymerization degree in the range of 80-3000; (C) organohydrogenpolysiloxane; and (D) a hydrosilylation catalyst that is activated by high energy irradiation, wherein the amount of component (A) included is 55-90 mass%, exclusive, of the total mass of components (A)-(C), the composition is nonfluxional at 25 DEG C, and has thermal melting properties.

The directional strengthen regulating radiotherapeutic apparatus includes shielding and protecting assembly, focusing units, strengthen regulating board and driving mechanism. The advantage of the present invention is that the independently rotated and focused units may be laid in different angles to focus the dispersive rays, such as gamma rays, onto the disease focus, so that the disease focus obtains high energy irradiation while the health tissue obtains very lower irradiation, reaching stereo directional treatment. By means of the control of the switches and speeds of the focusing units and the strengthen regulating board, the spatial distribution of the dosage absorbed by the disease focus is regulated and the important tissue of the patient may be protected by means of the independent switching function.

The invention relates to a process of preparation of powder coating compositions providing a desired gloss level of the resulted coatings comprising the following steps of a) providing particles of at least one powder coating composition having a number average particle size in the range of 1 to 300 mum, and b) mixing these particles with particles of at least one powder coating composition having a number average particle size in the range of 1 to 300 mum, the particles of which are irradiated with high energy radiation under near-ambient temperature, in a mixing ratio of 1:99 to 99:1; the process according to the invention provides powder coating compositions producing a desired gloss level of the coatings by varying the time period and / or the intensity of the high energy irradiation of the powder coating particles or by varying the mixing ratio between the non-irradiated powder particles and the irradiated powder particles.

We describe a method for patterning of colloidal nanocrystals films that combines a high energy beam treatment with a step of cation exchange. The high energy irradiation causes cross-linking of the ligand molecules present at the nanocrystal surface, and the cross-linked molecules act as a mask for the subsequent cation exchange reaction. Consequently, in the following step of cation exchange, the regions that have not been exposed to beam irradiation are chemically transformed, while the exposed ones remain unchanged. This selective protection allows the design of patterns that are formed by chemically different nanocrystals, yet in a homogeneous nanocrystal film.

The invention provides a radiation-resistant additive and a method for synthesizing and preparing a radiation-resistant silicone rubber material. The structural formula of the radiation-resistant additive is as follows, and it is used as a radiation-resistant additive, with phenyl silicone rubber as the base rubber, and reinforced Agent, structure control agent and vulcanizing agent are mixed and vulcanized into radiation-resistant silicone rubber material. The radiation-resistant silicone rubber material prepared by the present invention has good radiation-resistant performance, and can be used to produce various types of rubber products such as electric wires, cable sheaths, rubber gaskets, sealing parts, diaphragms, etc. in various irradiation occasions. Widely used in aerospace, nuclear industry, electronic communication, chemical industry, medicine, shipbuilding and other fields that require resistance to high-energy radiation.