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1898results about How to "Moderate hardness" patented technology

Manufacturing method of paraffin sections of zostera marina embryo

The invention discloses a manufacturing method of paraffin sections of zostera marina embryo, comprising the following steps: (1) material drawing and fixation: zostera marina seeds are taken and the fruit skin is stripped, and after endosperm is removed, an integral zostera marina embryo is soaked in FAA (free amino acids) fixing solution and is fixed for more than 48 hours; (2) dehydration: the zostera marina embryo is taken out from the fixing solution and is soaked in alcohol for dehydration; (3) waxing and embedding: paraffin is added gradually in a vessel containing the zostera marina embryo and dimethylbenzene, and conventional paraffin embedding is carried out to obtain the wax blocks containing the zostera marina embryo; (4) slicing, spreading and drying: the wax blocks coated with the zostera marina embryo is fixed on a wheel rotation type slicing machine for carrying out continuous slicing of the paraffin, so as to obtain wax bands and enable the wax bands to be attached to an object slide; (5) dewaxing, rehydration and dyeing of hematoxylin dye solution; (6) slicing, dehydration and dyeing of eosin and alcohol; and (7) transparence and mounting are carried out to manufacture a permanent section. In the manufacturing method disclosed by the invention, the paraffin sections of the zostera marina embryo, which have clear dyeing and an integral texture structure, can be obtained.
Owner:SHANDONG ORIENTAL OCEAN SCI TECH

High refraction and high adhesion large power LED packaging organosilicon material and preparation method thereof

ActiveCN102936414ASolve the problem of incomplete hydrolysis and condensationReduce air permeabilitySemiconductor devicesChemical synthesisPtru catalyst
The present invention relates to a high refraction and high adhesion large power LED packaging organosilicon material and a chemical synthesis method thereof. The organosilicon packaging material is prepared by carrying out mixing matching on a component A and a component B according to a mass ratio of 1:1, wherein the component A comprises vinyl phenyl polysiloxane, vinyl phenyl silicone oil, a platinum-containing polysiloxane catalyst and a tackifier, the component B comprises hydrogen-containing phenyl polysiloxane, dihydrideterminated phenyl polysiloxane, vinyl phenyl polysiloxane and an inhibitor, the tackifier is prepared by carrying out addition on isocyanate, methoxy silane and epoxy silane, and provides strong adhesion for PPA and a silver surface, the curing agent is prepared by compounding hydrogen-containing phenyl polysiloxane and dihydrideterminated phenyl polysiloxane, and a compounding mass ratio is preferably 4:1-2, such that the packaging material has moderate hardness and flexibility after curing so as to effectively solve contradiction of strength and cracking of the cured adhesive. With the present invention, the organosilicon packaging material with characteristics of refraction of 1.54, suitability for industrialization and fully meeting of large power LED packaging requirements can be obtained.
Owner:湖北环宇化工有限公司

Method for processing instant dried sweet potato

The invention provides a method for processing an instant dried sweet potato, which comprises the following steps of: carrying out storage and saccharification pretreatment on a fresh sweet potato; cleaning the sweet potato, removing the peel of the fresh sweet potato and cutting the sweet potato into strips; blanching for 15-30 seconds; leaching; adding 1-3 percent by mass of honey; steaming for 30-45 minutes in steam; drying to the water content of 32-36 percent at 60-70 DEG C in microwave vacuum; adding 0.2-0.4 percent by mass of mountain naphthalene oil; steaming for 15-30 minutes in steam; drying to the water content of 14-18 percent at 50-60 DEG C in microwave vacuum; storing and dampening to the water content of 20-24 percent at 4-8 DEG C in a refrigeration house; and carrying out microwave sterilization at 30-40 DEG C for 3-6 minutes; and packaging in vacuum. By adopting the processing method of the invention, the produced instant dried sweet potato has flexible texture and certain toughness and can be chewed by all people regardless of age and sex; the product has uniform color, presents red gloss and has the potato flavor deserved by the variety, palatable sweetness, no any food additive, short vacuum microwave drying time and less loss of nutrition components; the product has the normal temperature quality guarantee period for 9 months and the refrigeration quality guarantee period for 12 months; the quality standard of the product meets the following condition: the total bacterial amount is not more than 1,000 CFU/g, the mould is not more than 50 CFU/G, the escherichia coli is not more than 30 MPN/100g, and pathogenic bacteria are not detected; in addition, the energy consumed for producing the instant dried sweet potato is reduced by more than 30 percent compared with the energy consumed for producing the instant dried sweet potato by hot air drying.
Owner:ZHEJIANG UNIV OF TECH

Black currant jam for bread with long shelf life and preparation method thereof

The invention discloses black currant jam for bread with a long quality guarantee period and a preparation method thereof. The black currant jam mainly comprises the following components: 20 to 25 percent of flesh and pulp of black currant, 7.5 to 11.5 percent of modified starch, 3.8 to 6 percent of sugar alcohol, 2.2 to 3.7 percent of edible colloid, 0.3 to 1.1 percent of edible emulsifier, 4.4 to 9.7 percent of sucrose, 27 to 34.6 percent of syrup and 1 to 3 percent of grease. The preparation method comprises the following steps of: mixing the modified starch, the sugar alcohol, the edible colloid, the edible emulsifier, a preservative and the sucrose and stirring uniformly; adding water, the syrup and the grease, raising the temperature to 90 to 95 DEG C, and keeping the temperature until the gelatinization is complete; adding the flesh and pulp of the black currants, continuing to stir and keep the temperature, and controlling the content of a solid matter to 65 to 68 percent; andreducing the temperature, and adding an acidity regulator and an edible essence to obtain the black currant jam for the bread with the long quality guarantee period. The black currant jam for the bread with the long quality guarantee period has the advantages that: the jam has soft texture, moist mouthfeel, rich taste, high water content and low water activity, and is baking-resistant, the sugar degree is 65 to 70 degrees, the water activity is 0.75 to 0.8, and the quality guarantee period of finished bread containing the jam is 3 to 6 months.
Owner:广州合诚实业有限公司

Method for preparing polyvinyl alcohol and polyurethane super absorbent sponge

The invention discloses a method for preparing a polyvinyl alcohol and polyurethane super absorbent sponge. The method includes mixing polyvinyl alcohol with distilled water at first, dissolving the polyvinyl alcohol for 20 to 30 minutes under the condition that the water bath temperature ranges from 50 DEG C to 95 DEG C and rotational speed ranges from 400r/min to 600r/min to obtain polyvinyl alcohol aqueous solution; and then heating the polyvinyl alcohol aqueous solution until the temperature of the polyvinyl alcohol aqueous solution ranges from 30 DEG C to 100 DEG C, adding water-based polyurethane prepolymer, catalysts and auxiliary foaming agents into the polyvinyl alcohol aqueous solution, stirring and uniformly mixing the mixture under the condition of rotational speed ranging from 400r/min to 600r/min, enabling the mixture to react for 5 minutes to 10 minutes, and solidifying the mixture for 2 to 4 hours at the temperature ranging from 30 DEG C to 100 DEG C to obtain the sponge with the water absorbent rate higher than 9.8. The water absorbent rate of the obtained sponge is increased to 10-20 times from the original 6-8 times of an existing polyvinyl acetal sponge, the water absorbing velocity of the sponge is increased to 8g/ming from the original 4g/ming, and the polyvinyl alcohol and polyurethane super absorbent sponge has a broad development prospect in fields of aquatic product processing, food, clinical medicine, water treatment and the like.
Owner:SOUTH CHINA UNIV OF TECH

Method for manufacturing high-strength hot rolled bulletproof steel plate

The invention discloses a method for manufacturing a high-strength hot rolled bulletproof steel plate, and belongs to the technical field of metal materials. The bulletproof steel plate comprises the following components: 0.08-0.12% of C, 0.7-1.3% of Si, 1.30-1.8% of Mn, 0.01-0.06% of Al, less than or equal to 0.02% of P, less than or equal to 0.004% of S, less than or equal to 0.004% of N, less than or equal to 0.015% of O, 0.3-1.0% of Gr, less than or equal to 0.2% of Ti and Nb, 0.0015-0.0025% of B and the balance of Fe and inevitable impurities. The method for manufacturing the high-strength hot rolled bulletproof steel plate comprises the following steps: 1, smelting the components to cast a continuous casting billet with qualified components, feeding the continuous casting billet into a heating furnace and heating; 2, performing hot rolling on the heated billet; 3, cooling the hot rolled continuous casting billet; 4, coiling the cooled continuous casting billet to obtain a hot rolled plate; 5, performing thermal treatment on the hot rolled plate to obtain the bulletproof steel plate. The high-strength hot rolled bulletproof steel plate disclosed by the invention is high in ductility and moderate in hardness, meanwhile, the alloy cost is relatively low, the process is easy in implementation, and the welding performance of the bulletproof steel plate is good.
Owner:SHOUGANG CORPORATION

Quenching and tempering type abrasion resistant steel and heat treating method thereof

The invention relates to quenching and tempering type wear resistant steel and a heat treatment method thereof. The steel comprises the following chemical components by weight percentage: less than or equal to 0.22 percent of C, less than or equal to 0.80 percent of Si, less than or equal to 1.60 percent of Mn, less than or equal to 0.025 percent of P, less than or equal to 0.010 percent of S, less than or equal to 0.60 percent of Ni, less than or equal to 1.00 percent of Cr, less than or equal to 0.50 percent of Mo, 0.02 to 0.03 percent of Nb,0.04 to 0.06 percent of V, 0.020 to 0.045 percent of Al, 0.015 to 0.030 percent of Ti, less than or equal to 0.004 percent of B, and the balance being Fe and unavoidable impurities. The steel plate has reasonable obdurability matching, proper hardness, even full-thickness hardness and the mechanical properties reaching the expected design requirements. The steel plate production process has easy operation and high adaptability. The steel plates of various batches have stable and even performance and can reach the requirements for volume production. As the tempering time in a quenching machine is longer, the tempering time can be appropriately shortened in the subsequent production through tests, thereby reducing the cost.
Owner:WUYANG IRON & STEEL

Preparation method for inverted LED white-light chip of chip scale package

The invention discloses a preparation method for an inverted LED white-light chip of chip scale package, and the method comprises the following steps: temporarily fixing an UV solidifying adhesive tape (2-1) on the upper surface of a die bonding positioning light cover (1); setting flip chips (3) on the upper surface of the UV solidified adhesive tape (2-1) according to the position of the die bonding positioning light cover (1); employing a fluorescent glue film (4) to cover the flip chips (3); carrying out vacuumizing and heating, and enabling the fluorescent glue film (4) to be solidified and packaged on the flip chips (3); carrying out cutting along gaps among the all packaged flip chips (3); removing the die bonding positioning light cover (1); carrying out UV irradiation and enabling the UV solidified adhesive tape (2-1) to be solidified, and obtaining the inverted LED white-light chip (5) of chip scale package. The method simplifies the technological flow, avoids glue mixing and dispensing in the original technology, improves the production efficiency and yield, and greatly reduces the production cost. The method completely avoids the sinking of phosphor, enables the batch stability of the inverted LED white-light chips (5) to be high, and enabling the color temperature of the inverted LED white-light chips (5) to be consistent.
Owner:TECORE SYNCHEM

Anti-static polyurethane material for manufacturing shoe soles, shoe sole manufacturing method and manufacturing method of dual-density polyurethane safety shoe soles

The invention discloses an anti-static polyurethane material for manufacturing shoe soles, a shoe sole manufacturing method and a manufacturing method of dual-density polyurethane safety shoe soles. The anti-static polyurethane material consists of a component A and a component B which are mixed and poured, the component A includes polyatomic alcohol, catalyst, foaming agent, anti-static agent, carbon fiber powder, chain extender and defoaming agent; and the component B is isocyanate. The shoe sole manufacturing method includes steps of baking and drying the polyatomic alcohol and the isocyanate, mixing the rest compositions in the component A and the baked polyatomic alcohol uniformly to form material A, and mixing the material A with the isocyanate of the component B to obtain shoe soles made of anti-static polyurethane materials by pouring forming. The dual-density polyurethane safety shoe soles can be manufactured by secondary pouring by selecting foaming agents in different quantity. The polyurethane materials are high in anti-static performance, and the manufactured shoe soles are proper in hardness. Shoe soles manufactured by the manufacturing methods are fine in demouldingand high in production efficiency.
Owner:深圳市新纶超净科技有限公司
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