A method for nano-depth surface activation of a PTFE-based membrane and relates to the technical field of polymer composites is disclosed. The method comprises the following steps: covering a functional surface of a PTFE-based nano functional composite membrane, performing surface activation treatment on a single surface of the membrane to which a bonding adhesive is applied, and migrating and complexing a high-toughness cold bonding adhesive tape on the membrane surface, with an activated structure layer, of the PTFE-based nano functional composite membrane through a mechanical adhesive applying device to form an adhesive-membrane complex. An extremely strong affinity and a high-strength bonding performance are generated between the membrane and the adhesive, and the adhesive-membrane complex is formed. Integration of membrane/adhesive bonding complexing, membrane/membrane bonding complexing and membrane/adhesive layer bonding is realized.

A curable hot-melt silicone composition that is less susceptible to curing inhibition and with excellent storage stability, and a sheet or film containing the same, is provided. The composition comprises: (A) a solid organopolysiloxane resin containing a specific ratio of (A1) an organopolysiloxane resin having a curing reactive functional group that contains a carbon-carbon double bond and containing 20 mol % or more of a Q unit, and (A2) an organopolysiloxane resin not having a curing reactive functional group that contains a carbon-carbon double bond and containing 20 mol % or more of a Q unit; (B) a chain organopolysiloxane having a curing reactive functional group that contains at least two carbon-carbon double bonds; (C) an organohydrogenpolysiloxane resin having a mass loss ratio relative to pre-exposure of 10% or less after exposure to 100 C. for 1 hour under atmospheric pressure; and (D) a hydrosilylation reaction catalyst. The composition generally has hot-melt properties.

A method for the adhesion of a layer of fluorosilicone rubber which is curable using a non-hydrosilylation curing process to a layer of silicone rubber which contains no perfluoroalkyl groups and which is curable using a non-hydrosilylation curing process, comprising the steps of: (i) incorporating either a hydrosilylation catalyst or a siloxane containing at least two silicon bonded hydrogen groups into the fluorosilicone rubber composition prior to curing and; (ii) incorporating the other of the hydrosilylation catalyst or the siloxane containing at least two silicon bonded hydrogen groups into the alternative silicone rubber composition prior to curing; (iii) preparing a mixture compound comprising the products of step (i) and step(ii) and having a weight ratio of the product of step (i) to the product of step (ii) in the range of 40:60 to 60:40; (iv) forming the products of step (i), (ii), and step (iii) into required shapes; (v) bringing the shaped products of step (iv) into contact with the product of step (iii) between the product of step (i) and product of step (ii); and (vi) adhering the shaped products in contact with each other together by curing the products of step (v).

The present invention provides an organic silicon coating including 20 to 40 parts of methyl vinyl organic silicon polymer by weight, 1 to 6 parts of methyl phenyl organic silicon polymer by weight, 5 to 15 parts of hydrogenated silicone oil, 5 to 10 parts of fluorinated acrylate monomer by weight, 5 to 15 parts of silicon dioxide by weight, 0.2 to 2 parts of inhibitor by weight, 0.1 to 1 part of auxiliary by weight, 0.1 to 1 part of thermal initiator by weight, 30 to 50 parts of organic solvent by weight, and 2 to 5 parts of metal catalyst by weight. The organic silicon coating provided by the present invention has good adhesion for a silicone rubber or fluororubber base material with no surface treatment.

An addition/condensation curable silicone resin sheet comprising (A) an organopolysiloxane containing at least two silicon-bonded alkenyl groups and at least two silicon-bonded alkoxy or hydroxyl groups, (B) an organopolysiloxane containing at least two silicon-bonded hydrogen atoms and at least two silicon-bonded alkoxy or hydroxyl groups, (C) an organopolysiloxane containing at least two silicon atoms having two alkoxy or hydroxyl groups and one hydrogen atom on a common silicon atom, and (D) a hydrosilylation catalyst is plastic and solid or semisolid at normal temperature. The silicone resin sheet is easy to work, effective to cure, and likely to form a cured layer around an LED chip.

The invention relates to a crosslinkable composition X, comprising: at least one organopolysiloxane compound A comprising, per molecule, at least two C2-C6 alkenyl radicals bonded to silicon atoms; at least one organohydrogenopolysiloxane compound B comprising, per molecule, at least two hydrogen atoms bonded to an identical or different silicon atom; at least one catalyst C which is a complex corresponding to the following formula: [Co(L1)2] in which: the symbol Co represents cobalt at degree of oxidation II; the symbols L1, which may be identical or different, represent a ligand which is a -dicarbonylato anion or the enolate anion of a -dicarbonylated compound; optionally at least one adhesion promoter D; and optionally at least one charge E. The invention also relates to the use of the previously described catalyst C as silicone composition crosslinking catalyst, to a silicone composition crosslinking method, characterized in that it consists in heating the composition X to a temperature of between 70 and 200 C., and to the resulting crosslinked silicone material Y.

A plastic substrate includes: a transparent plastic support member; a first inorganic layer on a surface of the plastic support member; and a first organic-inorganic hybrid layer on the first inorganic layer. A display device includes a display panel and a window on the display panel, the window including the plastic substrate.

A method for making a solventless polyorganosiloxane pellet is disclosed. The pellet is comprised of a polyorganosilicate resin and a polyorganosiloxane gum. The pellet is useful for making silicone pressure sensitive adhesive compositions.

Provided are: a curable composition that makes it possible to form a cured film having excellent wear resistance and weather resistance; a laminate that is provided with the cured film; and an automobile headlamp lens. The curable composition makes it possible to obtain a cured film in which the relationship between a haze value (Hx) that is obtained by a wear resistance test and a haze value (Hy) that is obtained by a weather resistance test satisfies Hy0.3 Hx+5.0 when a cured film having a thickness of 10 m is produced.

An addition/condensation curable silicone resin sheet comprising (A) an organopolysiloxane containing at least two silicon-bonded alkenyl groups and at least two silicon-bonded alkoxy or hydroxyl groups, (B) an organopolysiloxane containing at least two silicon-bonded hydrogen atoms and at least two silicon-bonded alkoxy or hydroxyl groups, (C) an organopolysiloxane containing at least two silicon atoms having two alkoxy or hydroxyl groups and one hydrogen atom on a common silicon atom, and (D) a hydrosilylation catalyst is plastic and solid or semisolid at normal temperature. The silicone resin sheet is easy to work, effective to cure, and likely to form a cured layer around an LED chip.