Zhejiang University

Zhejiang Sci-tech University

China National Silk Museum

Hangzhou Grand Canal Comprehensive Protection Development and Construction Group Co., Ltd.

Yong Liu

Lin Li

Li Li

Rong Xiong

Qiuguo Zhu

Yang Zhou

Hao Li

Junbo Liu

Hailiang Yang

Liling Jia

Yijian Wang

Bentao Zhang

Hailing Zheng

Chunlin Zhou

Gaorong Han

Xuebo Li

Changlin Kang

Shaobo Gu

Dongshen Zhou

Dan Yang

Rui Jia

Bing Wang

Qi Zhu

Zhiqin Peng

Disclosed is a low-expansion borosilicate transparent glaze, a preparation method thereof, and use thereof in preparation of a glaze product by secondary fusion-cast molding. The low-expansion borosilicate transparent glaze has raw material composition by mass percentage including: 72%-80% of SiO, 4%-12% of BO, 4%-12% of NaO, 0.1%-4% of CaO, 0.1%-6% of AlO, 0-0.05% of FeO, 0-2% of MgO, 0-2% of KO, 0-2% of ZnO, 0-2% of BaO, 0-2% of ZrO, 0-0.5% of LiO, and 0-0.5% of TiO, wherein a sum of mass percentages of SiO, BOand AlOis 85%-95%. The preparation method includes steps of: (1) after mixing dried raw materials, melting at 1400-1540° C. to obtain a high-temperature glass melt; (2) cooling the high-temperature glass melt to 1150-1230° C. to mold; and (3) annealing a molded glass at 530-600° C. to obtain the low-expansion borosilicate transparent glaze.

Low-expansion borosilicate transparent glaze and a preparation method and use thereof

A double-blade paper cutter includes a housing, which includes a first side wall and a second side wall. The first side wall is arranged with a left paper cutting component, which includes a first slit and a first cutting knife. The second side wall is arranged with a right paper cutting component, which includes a second slit and a second cutting knife. The first slit and the second slit both extend axially from the paper feeding end of the housing. The cutting knife is configured to cut a sheet of paper entering the slit from one end of the housing.

Paper cutter and double blade paper cutter

A paper separator provided with an adhesive tape cutting assembly includes a housing structure and an adhesive tape cutting assembly, where a housing has an open first end and an open second end, the first end and the second end are axially through and forms a cavity capable of accommodating a paper roll inside the housing; a cavity opening is formed in an outer wall of the housing and is axially formed from the first end to the second end; and the adhesive tape cutting assembly is fixedly mounted on the outer wall of the housing and is configured to be sleeved with an adhesive tape roll and cut an adhesive tape.

Paper separator provided with adhesive tape cutting assembly

A purification method for detection of a strontium isotope in a silk cultural relic. The method includes: (1) enrichment of the strontium isotope: after cleaning the silk cultural relic, adding the silk cultural relic to a digestion agent for microwave digestion, and conducting evaporation drying; and adding a dried product to a nitric acid solution for centrifugal separation, and extracting a supernatant; and (2) purification of the strontium isotope: first, mixing 4',4″(5″)-di-tert-butyldicyclohexano-18-crown-6 and a defoamer and adsorbed to a purified resin separation column, and pre-cleaning the purified resin separation column with a nitric acid solution; next, injecting the supernatant in step (1) into the purified resin separation column with a nitric acid solution as a carrier solution; and then, injecting anSr solution and an elution solution into the purified resin separation column in sequence to obtain a separated and purified strontium solution.

Purification method for detection of strontium isotope in silk cultural relic

A wrapper cutter, including a shell having an axially penetrating hollow structure, an elongated slit extending along an axial direction further provided on one side edge of the shell, a cutting knife fixedly mounted on an inner bottom wall of the elongated slit; and a vertical plate arranged on an outer wall of the shell. The vertical plate extends along a circumferential direction of the shell and at least partially covers the elongated slit.

Wrapper cutter

The embodiments of the present disclosure disclose a cutter assembly, a paper cutting device and a paper cutter. The paper cutter includes a housing, a cutter assembly and a pressure guide assembly. The housing includes a paper distributor housing, and a side wall of the paper distributor housing is defined with a paper discharging port. The housing also includes a paper cutter housing. The cutter assembly includes an object picking member, and one end of the object picking member has a flat and sharp paper picking end exposed outward. The pressure guide assembly assists in positioning and guiding the paper to be cut to slide straightly toward a blade.

Cutter assembly, paper cutter, paper distributor and paper cutting device

Provided herein is a paper cutter, including: a paper cutter housing which includes an accommodating space for accommodating a roll of paper to be cut, where a side wall of the paper cutter housing further includes two parallel guide rails, a holding portion is arranged on an outer wall of the paper cutter housing, and a pressure direction of the holding portion is capable of being perpendicular to a plane formed by the two parallel guide rails; and a paper cutting device which is connected to the side wall of the paper cutter housing and includes a cutter assembly, where the cutter assembly includes an object picking member and a cutter, and a direction corresponding to a cutting edge of the cutter is opposite to a paper feeding direction of the paper to be cut.

Cutter assembly, paper cutting device and paper cutter

Provided is a wrapper cutter, including a shell having an axially penetrating hollow structure. A notch extending along an axial direction is further formed in one side edge of the shell, and a cutting knife is fixedly arranged on an inner bottom wall of the notch. Supporting planes arranged axially are further arranged on a sidewall of the shell, can serve as contact planes between the wrapper cutter and a placing plane, and are used to perform positioning, force bearing and supporting in the case of wrapper cutting and assist the wrapper cutter to slide linearly.

The present invention provides a self-draining oil buoyancy regulating device for underwater robots, wherein the accumulator, lower hatch cover, hatch trunk, upper hatch cover and bladder are connected; the water-proof connector is fixed on the upper hatch cover; the depth-pressure sensor is settled on the lower hatch cover; the upper valve block, hydraulic-operated check valve and lower valve block are connected; the lower valve block is fixed on the lower hatch cover; the pump outlet pressure sensor and the accumulator pressure sensor are on the lower valve block; the directional valve and the upper valve block are connected; the hydraulic pump motor assembly and the relief valve are both connected with the lower valve block; the depth-pressure sensor, pump outlet pressure sensor and accumulator pressure sensor are all connected with the control panel; the control panel is connected with the external power supply and the host computer.

Self-draining oil buoyancy regulating device for underwater robots

Growing community of inventors

Zhejiang, China

Yong Liu