The present disclosure discloses a low-water-vapor-permeability polyolefin-elastomer film and its preparation method. The film comprises: 50-100 mass parts of a matrix resin, 0-40 mass parts of a modified resin, 0.001-2 mass parts of an activator, 0.1-3 mass parts of an organic peroxide, 0.02-5 mass parts of an assistant cross-linker, 0.02-2 mass parts of a silane coupling agent, 0.005-2 mass parts of a light stabilizer, and 0-20 mass parts of a water blocking filler. In the present disclosure, by adding the modified resin and the activator that have an active group, a cross-linking degree and a cross-linking density of the film are improved, and a water-vapor permeability is reduced; by adding the water blocking filler, the water blocking property of the film is further improved, thereby ensuring reliability of the assembly, and prolonging service life of the assembly.

The present disclosure discloses a low-water-vapor-permeability polyolefin-elastomer film and its preparation method. The film comprises: 50-100 mass parts of a matrix resin, 0-40 mass parts of a modified resin, 0.001-2 mass parts of an activator, 0.1-3 mass parts of an organic peroxide, 0.02-5 mass parts of an assistant cross-linker, 0.02-2 mass parts of a silane coupling agent, 0.005-2 mass parts of a light stabilizer, and 0-20 mass parts of a water blocking filler. In the present disclosure, by adding the modified resin and the activator that have an active group, a cross-linking degree and a cross-linking density of the film are improved, and a water-vapor permeability is reduced; by adding the water blocking filler, the water blocking property of the film is further improved, thereby ensuring reliability of the assembly, and prolonging service life of the assembly.

Electrolytes and polymers for a lithium battery can include a fluorinated aryl sulfonimide salt or fluorinated aryl sulfonimide polymer.

Electrolytes and polymers for a lithium battery can include a fluorinated aryl sulfonimide salt or fluorinated aryl sulfonimide polymer.

The present invention relates to homogeneous sulfur-modified polymer compositions, methods related thereto and an asphaltic concrete mixture.

The present invention relates to homogeneous sulfur-modified polymer compositions, methods related thereto and an asphaltic concrete mixture.

The present invention relates to homogeneous sulfur-modified polymer compositions, methods related thereto and an asphaltic concrete mixture.

A poly(phenylene sulfide) fiber changes little in fiber structure and has excellent long-term heat resistance. Namely, the poly(phenylene sulfide) fiber has a degree of crystallization of 45.0% or higher, a content of movable amorphous components of 15.0% or less, and a weight-average molecular weight of 300,000 or less.

A poly(phenylene sulfide) fiber changes little in fiber structure and has excellent long-term heat resistance. Namely, the poly(phenylene sulfide) fiber has a degree of crystallization of 45.0% or higher, a content of movable amorphous components of 15.0% or less, and a weight-average molecular weight of 300,000 or less.

The invention relates in particular to a crosslinkable rubber composition and to a process for preparing same.

The composition is based on an elastomer, comprises a crosslinking system and a thermoplastic phase with melting point Tm dispersed as nodules, and comprises the product: a) of a melt reaction by thermomechanical working of the elastomer and other ingredients, apart from the system, then b) of mechanical working with prior addition of the system.

According to the invention: the dimension of the nodules is between 10 nm and 10 pm, a) comprises heating the mixture up to a temperature >Tm maintained for a holding time, and the system comprises sulfur when the elastomer is unsaturated and said phase comprises saturated chains, and comprises a peroxide when the elastomer is saturated.