37results about How to "High end-capping efficiency" patented technology

The invention discloses a low-hardness and high-elasticity water treatment membrane component epoxy pouring sealant preparation method and application. An epoxy pouring sealant comprises a component Aand a component B, the component A comprises, by weight, 30-70 parts of epoxy resin, 5-20 parts of activated thinners, 10-20 parts of toughening agents, 5-30 parts of fillers and 0.1-3 parts of coupling agents, the component B comprises, by weight, 20-50 parts of polyether amine, 40-70 parts of alicyclic amine and 2-15 parts of curing accelerators, and the weight ration of the component A to thecomponent B is (100:10)-(100:50). By the aid of a 'trinity' toughening modified mode of the flexible toughening agents, the activated toughening thinners and flexible curing agents, the epoxy pouringsealant is characterized of low hardness, high elasticity and stable hardness within wide temperature range, the epoxy pouring sealant has excellent adhesive performance and is low in initial viscosity, high in mold filling speed, simple and convenient to operate and applicable to the fields such as package of water treatment membrane components and flexible package of electronic devices, and theblocking efficiency of the membrane components can be greatly improved.

The present invention discloses a fluorosilicone functional macromonomer with alkene double bond on single end and a preparation method thereof. The monomer has a structure shown as a formula I or formula II. The fluorosilicone functional macromonomer prepared by the invention can be used in further copolymerization reaction with vinyl monomer, such as styrene and acrylate monomer, and endows the acrylic resin and styrene resin with characteristics of heat resistance, smoothness and weather resistance. The present invention uses an anion ring opening polymerization method for synthesis of a fluorine-containing organosilicon macromonomer with reactive functional group on single end, wherein the macromonomer has clear structure, controllable molecular weight and narrow molecular weight distribution. The macromonomer can be in active controllable polymerization with vinyl monomer to synthesize a block-type graft copolymer with improved physical and chemical properties, and has broad application prospects.

The invention discloses end-functionalized rubber as well as a preparation method and an application thereof. According to the method, a polarized organic compound is taken as a modifier, organolithium is taken as an initiator, and conjugated diene or/and vinyl aromatic hydrocarbon is/are initiated to be subjected to anionic polymerization in a hydrocarbon solvent for synthesis of an active polymer; the active polymer is subjected to a reaction with a diphenylethlene capping agent, and a capped active polymer is obtained; the capped active polymer is subjected to a terminating reaction with a novel siloxane-containing aromatic imine terminating agent, and functionalized rubber with a siloxy-amido group as an end group is prepared; finally, the synthesized end-functionalized rubber is mixed with complexing agents including a reinforcing agent, a vulcanizing agent, an accelerant and the like, a rubber composite is prepared and vulcanized, and a rubber material with low rolling resistance, high slipping resistance and other performance is obtained. The end-functionalized rubber synthesized with the method and the rubber material prepared from the end-functionalized rubber have good interaction with carbon black/white carbon black and can be applied to the tire industry.

The invention discloses a steel pipe end sealing device, and relates to the technical field of machining. The steel pipe end sealing device comprises a rack arranged on a plane and a conveying devicearranged inside the rack, wherein the conveying device comprises a sliding base arranged inside the rack, a clamping wheel plate arranged inside the rack and a fixing device arranged above the rack, the fixing device comprises a placing frame arranged above the rack, telescopic motors arranged on the placing frame, a fixing base arranged inside the placing frame, a semicircular arc-shaped surfaceis formed in the fixing base and a pushing and pressing device arranged on one side of the rack and fixedly connected with the rack, and the pushing and pressing device comprises a butt joint pipe arranged on the outer side of the rack, an end sealing cover arranged inside the butt joint pipe and a pushing and pressing air cylinder arranged on one side of the butt joint pipe. According to the steel pipe end sealing device and the using method, the problems that high firmness cannot be kept and the sleeving efficiency is low when an end sealing sleeve manually sleeves an end port of a steel pipe, and the end sealing sleeve is easily caused to fall off are prevented.

A straw plate producing and processing system comprises a main production system and a material recycling and dust removing system. The material recycling and dust removing system is arranged at the upper end of the main production system. The main production system is composed of a straw supplying and feeding module, an unbundling module, a stepping separation module, a straw conveying module, a forming module, a conveying module, a cut-off module and an end sealing module. The material recycling and dust removing system is composed of a material recycling module and a dust removing module. The straw supplying and feeding module, the unbundling module, the stepping separation module, the straw conveying module, the forming module, the conveying module, the cut-off module and the end sealing module are sequentially connected from left to right. The material recycling module is connected with the dust removing module. The straw plate producing and processing system is reasonable in overall system device matching, good in continuity and high in transfer efficiency; and in the production process, no auxiliary materials need to be added, straw plates are completely formed by processing straw, and the high-quality, high-strength and purely-natural straw plates can be produced.

The invention discloses a preparation method of alkoxy-terminated polydimethylsiloxane, wherein the preparation method comprises the following steps: (1) mixing DMC and hexamethyldisiloxane, heating to 160-180 DEG C, dropwise adding phosphoric acid, stirring for 6-8 hours, and refluxing to remove water to obtain a silicon phosphate terminator; and (2) heating a linear body to 130-150 DEG C, adding a potassium hydroxide aqueous solution, stirring for condensation polymerization, monitoring the viscosity on line, adding the silicon phosphate terminator obtained in the step (1) before the target viscosity is reached, continuously reacting for 5-50 minutes, vacuumizing, carrying out reduced pressure distillation to remove low-boiling-point substances, and thus obtaining the alpha,omega-dihydroxy polydimethylsiloxane with different viscosities. By adopting the preparation method of the alkoxy-terminated polydimethylsiloxane with the structure, the prepared alkoxy-terminated polydimethylsiloxane has the advantages of high terminating efficiency, convenient production process and good storage stability.

The invention discloses double-curable polysiloxane as well as a preparation method and application thereof. Acrylate groups contained in the molecular structure of polysiloxane can be quickly cross-linked and cured under the condition of ultraviolet irradiation, and moisture curing groups are contained in the end group structure, so that the polymer has moisture curing and UV light curing capabilities at the same time. According to a synthetic route provided by the invention, generation of acrylate can be avoided, silicon hydroxyl residue is lower than 1%, energy required by photocuring of the polymer is reduced, and the damp-heat aging resistance of a cured product is improved.

The invention discloses a chip positioning apparatus and a chip positioning method. The chip positioning apparatus comprises the following steps: a guide plate having a plurality of first through holes in uniform arrangement, the length and width of each first through hole matching the length and thickness of a chip; a positioning plate having a plurality of second through holes in uniform arrangement, the number and distribution position of the plurality of second through holes matching those of the plurality of first through holes, the width of each second through hole equal to that of each first through hole, the length of each second through hole greater than that of each first through hole, and the length of each second through hole greater than the sum of the length and the width of the chip, the depth of each second through hole no smaller than one third of the length of the chip and the depth of each second through hole no greater than half of the length of the chip; and a cross bar having a length greater than the width of the positioning plate. The chip positioning apparatus can guarantee correct orientation of the chip of an inverted multi-layer ceramic capacitor upon end termination, can increase efficiency of end termination, and is easy to operate.

The invention discloses a high-precision electronic component intelligent end sealing clamp and a machining process thereof, and belongs to the field of electronic component machining. According to the intelligent end sealing clamp for the high-precision electronic component and the machining technology of the intelligent end sealing clamp, three-shaft end sealing plates are installed in the middle of the interior of a workbench frame and the middle of the interior of a lower fixing frame correspondingly, a through opening is formed in the middle of the interior of the workbench frame, and a positioning sensor is installed on the inner wall of the through opening; and feeding and discharging rolling wheels are installed in the grooves, and positioning clamp bases are installed on the two sides of the workbench frame correspondingly. The problems that in the prior art, an electronic component clamp is simple in positioning mode, the position of the clamp is not convenient to adjust intelligently, and adaptability is poor are solved, the position of a component can be sensed through the positioning sensor, the two three-shaft end sealing plates can be adjusted to achieve the optimal positioning effect, the positions of feeding and discharging rolling wheels are adjusted intelligently, and the production efficiency is improved. And the end sealing device is stable in structure and convenient to regulate and control.

The invention provides a high-stability water-soluble coenzyme Q10 inclusion compound. A preparation method comprises the following steps: heating a water-soluble coenzyme Q10 inclusion compound aqueous solution to 10-90 DEG C, adding a cross-linking agent, performing stirring reaction for 1-20 hours, and performing filtration and drying to obtain the high-stability water-soluble coenzyme Q10 inclusion compound. In the water-soluble coenzyme Q10 inclusion compound aqueous solution, an inclusion wall material of coenzyme Q10 is a starch wall material, and the content of water is 50-95% of the mass of the water-soluble coenzyme Q10 inclusion compound aqueous solution; and the addition amount of the cross-linking agent is 0.0005-0.02% of the mass of the water-soluble coenzyme Q10 inclusion compound aqueous solution. According to the invention, through an end group treatment mode of promoting cross-linking between hydrophilic end groups -OH outside the starch wall material through the cross-linking agent containing polyfunctional groups, an inlet port of the starch wall material is effectively terminated, the use stability of the water-soluble coenzyme Q10 inclusion compound is greatlyimproved, and the application field of the water-soluble coenzyme Q10 inclusion compound is further expanded.

The invention relates to an ether-containing polymer and a preparation method thereof, and belongs to the field of polymer synthesis. The invention provides an environment-friendly ether-containing elastomer. The structural formula of the environment-friendly ether-containing elastomer is shown as a formula I. The environment-friendly ether-containing elastomer with a new structure is prepared; due to the introduction of the micro-channel reactor, the reaction efficiency is higher, the time is saved, and heat release and mass transfer of materials in the reaction process can be better controlled; the polymer with narrow molecular weight distribution can be prepared; meanwhile, by controlling the feeding amount and feeding speed of the ether-containing reaction solution and the dihalogenated monomer solution and the number of reaction modules of the micro-channel reactor, the reaction ratio and the molecular weight and molecular weight distribution of the ether-containing elastomer can be controlled.

The present invention discloses a chip positioning device and method. The chip positioning device used for blocking positioning of chips of an inverse multilayer ceramic capacitor comprises: a plurality of first guide plates of first through holes uniformly arranged, wherein the length of the first through hole matches the width of the chip; a plurality of second guide plates of second through holes uniformly arranged, wherein the number and the distribution positions of the second through holes match the first through hole, and the length of each second through hole is equal to the length of each first through hole; a plurality of fixed plates of third through holes uniformly arranged, wherein the number and the distribution positions of the third through holes match the number and the distribution positions of the second through holes, the length of each third through hole is equal to the length of each second through hole, and the width of each third through hole matches with the thickness of the chip. The chip positioning device and method are able to ensure the correct positioning orientation when the chips of the inverse multilayer ceramic capacitor are blocked, improve the blocking end efficiency and facilitate the operation.