32results about How to "Overcome the problem of high cost" patented technology

The invention discloses aliphatic polycarbonate with high molecular weight and a preparation method thereof. The method comprises the following steps: in inert atmosphere, gradually heating divalent alcohol and carbonic ester under the action of a catalyst to complete an ester exchange reaction, and completely removing methyl alcohol generated in the process of the reaction to obtain a prepolymerof the aliphatic polycarbonate; and adding a polycondensation catalyst into the reaction system, and carrying out a polycondensation reaction in vacuum to obtain a product. The method has low cost ofraw materials and higher utilization ratio, reduces the cost of the product greatly, overcomes the defect of high cost of biodegradable materials, uses less dosage of catalyst in the reaction process,and avoids the complicated catalyst separation process. The aliphatic polycarbonate obtained by the method is white crystalline solid, has the number average molecular weight of between 6,000 and 2*10<5>, and can be directly used as plastics, does not contain an ether bond in the main chain of the polycarbonate, is a crystalline polymer, and greatly improves the heat-resistant quality of the polymer.

The invention provides a press-fit system for press-fitting a base material and a cover film. The base material and the cover film undergo press-fit by a press-fit device. The base material is a chip-type base material, and the cover film is a roll-type cover film produced by the utilization of a roll-to-roll technology. The press-fit system comprises a grabbing unit, a transmission unit for transmitting the base material, a roll material feeding unit, a roll-in unit, a press-fit device, a roll-out unit and a roll material receiving unit. According to the press-fit system and the press-fit technology, cost and efficiency are both considered. On one hand, expensive production line for realizing full-automatic press-fit of the base material and the cover film by a roll-to-roll technology is not adopted, and the problem of high cost is overcome; and on the other hand, by the roll-to-chip technology, full-automatic press-fit of the chip-type base material and the roll-type cover film is realized, automatic production of the press-fit technology is realized, and production efficiency is raised.

The invention discloses aliphatic polycarbonate with high molecular weight and a preparation method thereof. The method comprises the following steps: in inert atmosphere, gradually heating divalent alcohol and carbonic ester under the action of a catalyst to complete an ester exchange reaction, and completely removing methyl alcohol generated in the process of the reaction to obtain a prepolymerof the aliphatic polycarbonate; and adding a polycondensation catalyst into the reaction system, and carrying out a polycondensation reaction in vacuum to obtain a product. The method has low cost ofraw materials and higher utilization ratio, reduces the cost of the product greatly, overcomes the defect of high cost of biodegradable materials, uses less dosage of catalyst in the reaction process, and avoids the complicated catalyst separation process. The aliphatic polycarbonate obtained by the method is white crystalline solid, has the number average molecular weight of between 6,000 and 2*10<5>, and can be directly used as plastics, does not contain an ether bond in the main chain of the polycarbonate, is a crystalline polymer, and greatly improves the heat-resistant quality of the polymer.

The invention discloses a same-frequency continuous serial data synchronization method and a same-frequency continuous serial data synchronization device. A receiving module is controlled to sample the continuous serial data signals sent by a sending module in parallel through a plurality of co-frequency receiving clocks with different phases to obtain several sampling values, and a plurality of sampling values are judged to obtain an optimal receiving same-frequency clock, so that the problem of single-shot data signal sampling errors caused by path delay, time jitter and the like and the problem of high chip cost expenditure caused by the clock tree consumption due to the reduction of time sequence convergence in the prior art are solved, the sampling accuracy of the homologous co-frequency asynchronous signals is improved, the correctness of the internal data of a chip is ensured, the cost of a clock tree caused by time sequence convergence is reduced, the chip cost is reduced, andthe area of the chip is reduced.

The pile driver drills holes into the bedrock to build ceramic solar energy storage devices, involving solar hot water energy storage devices. The pile driver uses steel pipe piles to drill holes in the accumulated soil layer, and injects high-pressure water or high-pressure mud into the steel pipe piles Reduce the friction force of pile drilling and protect the hole wall. When the drilling depth reaches the bedrock or rock formation, the drilling work stops. Insert a polyethylene pipe and tank combiner into the hole in the accumulation layer with a hole depth of more than 5 meters, and pass through the horizontal, The vertical communication pipe forms the heating energy storage system in the soil accumulation layer, and uses local water in spring, summer and autumn to produce 60℃-100℃ hot water to circulate between the heat preservation water tank and the heating energy storage system in the accumulation soil layer, so that spring, summer and autumn can be obtained The solar energy is converted into energy storage in the soil layer, and the hot water heated by the energy storage in the soil layer is used to heat buildings, greenhouses, and biogas digesters in winter.

The invention discloses compound clarifying agent and a preparation method thereof. The compound clarifying agent is prepared by compounding 10 parts of cerium oxide, 20 parts of antimony oxide, 3 parts of lepidolite and 60 parts of calcium sulfate. The compound clarifying agent is compounded by the cerium oxide, the antimony oxide, the lepidolite and the calcium sulfate, overcomes the difficulty of high cost caused by adopting single cerium oxide, antimony oxide and lepidolite as the clarifying agent, and has low poison and better clarifying effect; the invention further discloses a method for preparing E glass fiber by adopting the compound clarifying agent; and the method uses the gradual clarifying theory of the compound clarifying agent to gradually decompose and clarify when glass is molten, so that the clarifying capacity is always in a vigorous state, and the E glass fiber with few impurities and good quality is obtained.

The invention discloses a combined water cooling plate. The combined water cooling plate comprises a flow collecting chamber I, a main cavity and a flow collecting chamber II, wherein one end of the main cavity is provided with the flow collecting chamber I, and the other end is provided with the flow collecting chamber II. The combined water cooling plate is characterized in that the flow collecting chamber I, the main cavity and the flow collecting chamber II with split single structures are tightly connected together through bolts penetrating through holes. The combined water cooling plate comprising the flow collecting chamber I, the main cavity and the flow collecting chamber II with split single structures can be quickly designed and manufactured according to different heat dissipation requirements of electronic power elements, and can realize quick assembly and sample production; the high cost in brazing is avoided under the premises of guaranteeing normal operation and prolonging service life; the flow collecting chamber I, the main cavity and the flow collecting chamber II are tightly connected through studs or bolts; the channel arrangement can be conveniently regulated according to different working condition requirements, so that the difficulty of high cost is overcome.

The invention discloses a method and device for synchronizing continuous serial data at the same frequency. The serial data signals sent by the transmitting module are controlled in parallel by several receiving same-frequency clocks with different phases, and several sampling values ​​are obtained. Judgment of each sampling value to obtain the best receiving clock at the same frequency, overcome the problem of single-shot data signal sampling error caused by path delay, time jitter, etc. The big problem is to improve the sampling accuracy of asynchronous signals with the same source and frequency, ensure the correctness of the internal data of the chip, reduce the overhead of the clock tree caused by timing convergence, reduce the cost of the chip, and reduce the area of ​​the chip.

The invention relates to the technical field of chemical engineering, and discloses a preparation method of a special fertilizer for Poria cocos. Through analysis of the nutrient elements required in the growth process of Poria cocos, phosphoric acid and carbamide are subjected to reaction for the preparation of an intermediate; then the intermediate reacts with alkaline potassium to prepare sodium dihydrogen phosphate; through control of nutrient content ratio of the filtrate in the crystallization processes of sodium dihydrogen phosphate, potassium and other trace elements are added to the filtrate with sodium dihydrogen phosphate separated to prepare the special fertilizer for Poria cocos. The method not only improves the purity of sodium dihydrogen phosphate, and through the analysis of the ratio of nutrient elements required in the growth process of Poria cocos, the prepared special fertilizer can achieve high yield with a small fertilizer amount.

The invention provides a press-fit system for press-fitting a base material and a cover film. The base material and the cover film undergo press-fit by a press-fit device. The base material is a chip-type base material, and the cover film is a roll-type cover film produced by the utilization of a roll-to-roll technology. The press-fit system comprises a grabbing unit, a transmission unit for transmitting the base material, a roll material feeding unit, a roll-in unit, a press-fit device, a roll-out unit and a roll material receiving unit. According to the press-fit system and the press-fit technology, cost and efficiency are both considered. On one hand, expensive production line for realizing full-automatic press-fit of the base material and the cover film by a roll-to-roll technology is not adopted, and the problem of high cost is overcome; and on the other hand, by the roll-to-chip technology, full-automatic press-fit of the chip-type base material and the roll-type cover film is realized, automatic production of the press-fit technology is realized, and production efficiency is raised.

An inertial gas driving method for creating the gas-phase circulation by liquid-phase circulation in the gas0phase reaction procedure of narrow-fraction liquid-phase hydrocarbon includes such steps as creating the liquid-phase circulation of narrow-fraction hydrocarbon, introducing inertial gas to it, gradual heating for stably evaporating the hydrocarbon, heating the liquid-phase material by overheat vapor circulation, heat exchange of inertial gas, exhausting the inertial gas, and gradually cutting off the inertial gas to create gas-phase circulation.

The invention provides a solar concentrating lens and a heat collecting device. The solar heat collecting device comprises a heat collector and the solar concentrating lens. The heat collector is disposed at the center of the sunny side of the solar concentrating lens. The solar concentrating lens comprises a plurality of equal curvature concentrating lens units, and the two adjacent equal curvature concentrating lens units are connected by a connecting piece. The solar concentrating lens and the heat collecting device adopt equal curvature concentrating technology, and the technology of the equal curvature concentrating lens is microsurface focusing. Compared with the mode of point focusing, the mode of the microsurface focusing greatly reduces the temperature, the problem that the technology of parabolic concentrating lens is likely to burn the collector is solved. In addition, the solar concentrating lens and the heat collecting device adopt the equal curvature concentrating lens units for modular assembly, the problem of high cost of the technology of parabolic concentrating lens is solved.

An inertial gas driving method for creating the gas-phase circulation by liquid-phase circulation in the gas0phase reaction procedure of narrow-fraction liquid-phase hydrocarbon includes such steps as creating the liquid-phase circulation of narrow-fraction hydrocarbon, introducing inertial gas to it, gradual heating for stably evaporating the hydrocarbon, heating the liquid-phase material by overheat vapor circulation, heat exchange of inertial gas, exhausting the inertial gas, and gradually cutting off the inertial gas to create gas-phase circulation.

Provided are a flexible, large-area laminated solar battery capable of multi-scale light trapping, and a preparation method therefor. A rigid substrate (100) with a large-scale textured surface is selected and a structure of the substrate surface is transferred onto an antireflection film (300) to enable the antireflection film (300) to form a large-scale textured surface, and then a front electrode (400) with a small-scale textured surface is prepared on the antireflection film (300) to enable the antireflection film (300) and the front electrode (400) to be effectively combined into a multi-scale light trapping structure, such that the light trapping performance of various photoelectric conversion layers of a flexible laminated solar battery is improved, thereby increasing the photoelectric conversion efficiency of the solar battery.

The invention relates to the technical field of chemical industry, and discloses a method for simultaneously preparing potassium dihydrogen phosphate and a special fertilizer for pitaya. The method comprises the following steps: reacting phosphoric acid with carbomite to prepare an intermediate, reacting the intermediate with an alkaline potassium salt to prepare potassium dihydrogen phosphate, controlling the content ratio of nutrients in a filtrate in the potassium dihydrogen phosphate crystallizing process, and adding trace element compounds to the potassium dihydrogen phosphate separated filtrate in order to prepare the special fertilizer for pitaya. The method improves the purity of potassium dihydrogen phosphate, and a small dose of the special fertilizer for pitaya, prepared by analyzing the ratio of the nutritional elements required in the growth process of pitaya, is applied to achieve a large output of pitaya.

The pile driver drills holes in the accumulated soil layer to build ceramic solar hot water energy storage devices, involving solar hot water energy storage devices. The pile driver uses steel pipe piles to drill holes in the accumulated soil layer, and injects high-pressure water into the steel pipe piles Or high-pressure mud to reduce the friction force of the punching pile and protect the hole wall. The drilling depth is 30 meters. When the rock layer is encountered halfway, the drilling work stops. Insert polyethylene into the hole in the accumulation layer with a depth of 5 meters to 30 meters. The tube-tank combiner forms a heating energy storage system in the accumulation layer through horizontal connecting pipes. The water capacity of the ceramic solar roof and the ceramic solar hot water system insulation water tank is the number of square meters of ceramic solar panels × 30 liters, using local water in spring, summer and autumn The hot water produced at 60°C-100°C is circulated in the heat preservation water tank and the heating energy storage system in the soil layer, so that the solar energy obtained in spring, summer and autumn is converted into energy storage in the soil layer, and the energy storage in the soil layer is used in winter Heated hot water can be used to heat buildings, greenhouses, and biogas digesters.

The invention provides a device for removing a steel bundling machine bundling wire oxide skin. The device is mainly composed of a motor, a wire inlet guide wheel set, an oxide skin removing wheel set, a bundling wire compressing device, a gearbox and a wire outlet guide wheel set, wherein the motor, the wire inlet guide wheel set, the oxide skin removing wheel set, the bundling wire compressing device, the gearbox and the wire outlet guide wheel set are mutually connected. The wire inlet guide wheel set is installed on a plate on the upper left portion of the gearbox through a pin roll, the oxide skin removing wheel set is installed on a plate on the right side of the wire inlet guide wheel set through a pin roll, the bundling wire compressing device is installed on a plate on the upper portion of the gearbox through a pin roll, the wire outlet guide wheel set is installed on a plate on the upper right portion of the gearbox through a pin roll, and the motor is installed below the left portion of the gearbox through bolts. The device for removing the steel bundling machine bundling wire oxide skin has the advantages that the problem that cost is high in steel packaging bundling wire oxide skin removing in the prior art is solved, bundling wires can be directly used on a bundling machine without acid pickling, and the effect of removing the bundling wire oxide skin is good.