A method of forming a modified thermoplastic structure for a down-hole application comprises forming a thermoplastic structure comprising at least one thermoplastic material formulated for crosslinking using an electron beam process. The thermoplastic structure is exposed to at least one electron beam to crosslink polymer chains of the thermoplastic structure. Other methods of forming a modified thermoplastic structure, and a down-hole tool are also described.

Provided is a vibrating diaphragm of a sound-producing apparatus. The vibrating diaphragm includes at least one elastomer layer, wherein the elastomer layer is made from polysulfide rubber; the polysulfide rubber is any one of type A polysulfide rubber, type FA polysulfide rubber and type ST polysulfide rubber, and a molecular weight of the polysulfide rubber is 1000-500000.

Various embodiments disclosed related to sealant tape. The sealant tape can include a cured product of a sealant composition including a curable liquid that includes a polysulfide, a polythioether, a copolymer thereof, or a combination thereof. The sealant composition also includes a curing agent for curing the curable liquid. Various embodiments provide cured products of the sealant composition, sealant tapes including the cured product, and sealant tapes including any suitable material with an adhesive pattern thereon.

A composition is composed mainly of: a component (I) (which is at least one selected from polyether ketone, polyether ether ketone, and polyether ketone ketone); a component (II) (which is polyphenylene sulfide); and, additionally if necessary, a component (III) (which is at least one selected from polyether imide, polyimide, polyamide imide, and polysulfone resins) and (IV) an inorganic filler. The composition is obtained using a conventional melt-kneading machine, for example, a single screw or twin screw extruder, Banbury mixer, or kneader in accordance with the melt-kneading method corresponding to the kneading machine. The resin composition for metal bonding has excellent metal bonding properties, and is applicable for use in automobile parts that require the composition to be bonded with metal and in electronic products such as laptop computers and mobile phones.

Provided is a resin composition having improved fluidity in a molten state maintained without lowering heat resistance, containing: a polymer being a reaction product of a first organic compound having a phenolic hydroxyl group and a second organic compound having a glycidyl group, Mw of the polymer being no greater than 10,000; and a thermoplastic resin other than the polymer. A proportion of the polymer contained in the resin composition is from 0.1% to 30% by mass. A melting point of the thermoplastic resin is no less than 200 C. The thermoplastic resin has a benzene ring in a molecule. The polymer and the thermoplastic resin have blended to form a homogeneous phase. Also provided are a molded product formed from the aforementioned resin composition, and a production method of a molded product including: kneading the resin composition by chaotic mixing; and molding a kneaded product obtained after the kneading.

A polyphenylene sulfide resin composition includes (A) 100 parts by weight of an acid-treated polyphenylene sulfide resin, (B) 10 to 100 parts by weight of a glass fiber, and (C) 0.1 to 10 parts by weight of an amino group-containing alkoxysilane compound, wherein the polyphenylene sulfide resin composition has an exothermic peak temperature (Tmc) of 195 C. to 225 C., the exothermic peak temperature being observed during a crystallization caused when the polyphenylene sulfide resin composition is melted by heating to 340 C. and then cooled at a rate of 20 C./minute, using a differential scanning calorimeter.

The present invention relates to polymer compositions (C) for the preparation of porous article, notably microporous membranes or hollow fibers. More particularly, the present invention relates to a process of preparing a porous article from a blend of at least one semi-crystalline or amorphous polymer (P) with an additive followed by a step of shaping the article and contacting the article with water to dissolve the additive and create an interconnected pore network within the shaped article.

Provided is a particle-containing resin composition having an appropriate particle size and being capable of improving friction and wear resistance properties even under a high temperature and high load environment. The particle-containing resin composition according to the present invention includes a resin composition and molybdenum disulfide particles, in which a median diameter D.sub.50 of the molybdenum disulfide particles determined by a dynamic light scattering method is 10 nm or more and 1,000 nm or less.

A method of forming a modified thermoplastic structure for a down-hole application comprises forming a thermoplastic structure comprising at least one thermoplastic material formulated for crosslinking using an electron beam process. The thermoplastic structure is exposed to at least one electron beam to crosslink polymer chains of the thermoplastic structure. Other methods of forming a modified thermoplastic structure, and a down-hole tool are also described.

A graphene-reinforced polymer matrix composite comprising an essentially uniform distribution in a thermoplastic polymer of about 10% to about 50% of total composite weight of particles selected from graphite microp articles, single-layer graphene nanoparticles, multilayer graphene nanoparticles, and combinations thereof, where at least 50 wt % of the particles consist of single- and/or multi-layer graphene nanoparticles less than 50 nanometers thick along a c-axis direction. The graphene-reinforced polymer matrix is prepared by a method comprising (a) distributing graphite microparticles into a molten thermoplastic polymer phase comprising one or more matrix polymers; and (b) applying a succession of shear strain events to the molten polymer phase so that the matrix polymers exfoliate the graphite successively with each event until at least 50% of the graphite is exfoliated to form a distribution in the molten polymer phase of single- and multi-layer graphene nanoparticles less than 50 nanometers thick along a c-axis direction.