Other

Fudan University

Behr Process Corporation

Xindiyuan Materials Technology (shanghai) Co., Ltd.

Limin Wu

Shuxue Zhou

Ming-Ren Tarng

Yongchun Chen

Jigui Li

Jinzhen Shi

Ling Yang

Lan Shi

Bo You

Guangxin Gu

The invention discloses a support member, comprising an annular body and a support projection disposed on an end surface and/or an inner wall of the annular body, wherein the support projection extends from the end surface of the annular body in an axial direction of the annular body and is configured to extend into an interior of a pipe member to support the pipe member. The pipe member is supported so that the pipe member is prevented from deformation under the action of a fastener, and effective and reliable abutting of the adjacent pipe members located on two sides of the support member is ensured, thereby improving the sealing performance and waterproofing performance at the abutment of the adjacent pipe members to enable a line pipe system formed by the pipe member to be more safe and reliable.

Support member and pipe member connecting structure

The present invention relates to an ultrahigh sensitive pressure-sensing film based on spiky hollow carbon spheres and the fabrication method thereof. The fabricated spiky hollow carbon spheres composed polydimethylsiloxane sensing film whose spheres were well dispersed in the matrix. The spiky structure is useful for the spheres to trigger Fowler-Nordheim (F-N) tunneling effect and thus enhancing the sensitivity of the material. The carbon material fabricated by the precursor transformation method contains a proper Nitrogen doping, which has efficiently increased the carrier migration ability. The hollow structure can both regulate the density of fillers and help to improve its temperature independence. Calcine the spheres under an inert atmosphere to transform the spiky hollow organic spheres into a carbon one, in this process the Nitrogen fraction and graphitization can be adjusted. The above carbon spheres then can be assembled with polydimethylsiloxane to achieve the composite film. The material of the present invention exhibits ultrahigh sensitivity, high sensing density, transparent, low hysteresis, temperature noninterference, and its processing method is simple, maturity and environment friendly.

Ultrahigh sensitive pressure-sensing film based on spiky hollow carbon spheres and the fabrication method thereof

A composition for forming a hydrophilic coating includes an organic binder having an average particle size from about 1 to about 100 nm and an inorganic binder having an average particle size from about 1 to about 40 nm. The composition further includes an inorganic photocatalyst that catalyzes an oxidation-reduction reaction. Characteristically, the photocatalyst includes a photocatalytic metal oxide having an average particle size from about 1 to about 50 nm. Advantageously, coatings formed from the composition have improved stain resistance, low contact angle, and resistance to dirt adherence, while maintaining a clear optical character.

Superhydrophilic coating composition

A high solid polyester polyol/silica nanocomposite resin with low viscosity is synthesized by an in situ polymerization method, namely conducting condensation polymerization of polyol/diacid monomer with a molar ratio of 1.1&#x2dc;1.5 in the presence of colloidal silica nanoparticles with a diameter of 10&#x2dc;150 nm. The resulted nanocomposite resins has a solid content of &#x3e;95%, molecular weight of 1000&#x2dc;5000 g/mol and hydroxyl value of 80-200 mg KOH/g, and a viscosity in the range of 800-2000 mPa.s. The viscosities are especially lower than those obtained by a blending method. The nanosilica content in the nanocomposite resin is 1&#x2dc;15% (based on the total solid content of nanocomposite resin). The high solid polyester polyol/silica nanocomposite resin was curable with isocyanate or melamine to prepare high solid transparent nanocomposite coatings with obviously improved abrasion and scratch resistance, hardness, weatherability etc.

Preparation of high solid polyester polyol/silica nanocomposite resin with low viscosity and related nanocomposite coatings

Growing community of inventors

Shanghai, China

Limin Wu