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41results about How to "Prevent thermal deterioration" patented technology

Low-melting-point glass powder and laser-illumination glass ceramic made from low-melting-point glass powder

The invention discloses a low-melting-point glass powder and laser-illumination glass ceramic made from the low-melting-point glass powder. A preparing method for the low-melting-point glass powder includes the steps that raw material chemicals are mixed to be even, the mixture is melted for 15 minutes to 90 minutes at the temperature of 300 DEG C to 700 DEG C, and glass liquid is obtained; the glass liquid at the temperature of 300 DEG C to 700 DEG C is quenched and naturally cooled to be at the room temperature, and blocky glass is obtained; the blocky glass is smashed, the smashed glass is put into a ball milling machine and subjected to ball milling, and the low-melting-point glass powder is obtained. The low-melting-point glass powder has the lower glass phase inversion temperature, the glass phase inversion temperature can be adjusted within the temperature range of 200 DEG C to 500 DEG C, the low-melting-point glass powder is suitable for making seal glass and vacuum components and parts and sealing LED, and particularly suitable for making the illumination glass ceramic with a fluorescent powder material, and the illumination glass ceramic is particularly suitable for laser illumination. The glass ceramic is formed and sintered at the low temperature, thermal degradation of fluorescent powder at the high temperature can be effectively avoided, and the laser-illumination glass ceramic has the important application value in the field of laser illumination.
Owner:BINHAI IND RES INST OF TIANJIN UNIV CO LTD

Pneumatic tire and method for producing pneumatic tire

InactiveCN103717415APrevent the risk of durability deteriorationReduce stress concentrationTyresTyre beadsTire beadFiber
This pneumatic tire is equipped with: a pair of annular bead cores embedded and disposed at a bead section; a carcass comprising a main body section extending toroidally between the pair of bead cores, and at least one carcass ply having a fold-back section that, continuously with the main body section, results from folding back around the bead core; and a tread rubber installed at the outer perimeter of the crown region of the carcass. The cross sectional shape in the widthwise direction of the tire of the bead cores is polygonal having at least one corner at the main body side of the carcass ply. At the periphery of the bead cores, at least a two-layered stack of organic fiber reinforcing layers is provided resulting from helically winding at least one rubber-covered organic fiber cord inclined with respect to the center line of the transverse plane of the bead cores; the respective organic fiber cords of organic fiber reinforcing layers that are adjacent in the inner / outer direction are caused to extend in mutually intersecting orientations with respect to the center line of the transverse plane of the bead cores, and of the organic fiber reinforcing layers that are adjacent in the inner / outer direction, in the inner organic fiber reinforcing layer, the rubber-covered organic fiber cord is wound leaving a gap in the peripheral direction of the tire at at least a portion thereof without overlapping in the peripheral direction of the tire, and the outer organic fiber reinforcing layer is providing in a manner so as to cover at least a portion of the gap.
Owner:BRIDGESTONE CORP

Zero-opening light-tight polymer composite sun-shading fabric and preparation process thereof

The invention relates to the technical field of sun-shading fabrics, in particular to a zero-opening light-tight polymer composite sun-shading fabric and a preparation process thereof. The zero-opening light-tight polymer composite sun-shading fabric comprises warp yarns and weft yarns used for weaving a fabric with a compact void-free structure, wherein the warp yarns comprise warp cores and warpelastic coating layer coating the warp cores; the weft yarns comprise weft cores and weft elastic coating layers coating the weft cores; the density of the weft yarns is 16-23 yarns/cm; and the warpelastic coating layers and the weft elastic coating layers both comprise polyvinyl chloride resin powder with a polymerization degree of 1000-1100, extinction polyvinyl chloride resin powder, an ultraviolet absorbent, a toner and the rest of auxiliary agents. The zero-opening light-tight polymer composite sun-shading fabric has better toughness, enables the warp yarns and weft yarns to be tighterin the weaving process to form a zero-opening structure, is not easy to deform after long-term use, is still tight between the warp yarns and the weft yarns due to external force breakage, has extremely high structural stability and opaque function, is durable, and does not have multiple defects of coatings, so that the fabric has a wide application prospect.
Owner:温多利遮阳材料(德州)股份有限公司

Method for extracting marine nutrients by using both ultramicro grinding and supercritical carbon dioxide extraction

The invention relates to the technical field of biological extraction, in particular to a method for extracting marine nutrients by using both ultramicro grinding and supercritical carbon dioxide extraction. The method comprises the following steps: feeding a marine product to be extracted into an ultramicro grinder for smashing to obtain marine product powder; and mixing, in parts by mass, 100 parts of the marine product powder and 0.05-0.2 part of tert-butylhydroquinone, then feeding the obtained mixture into a supercritical carbon dioxide extraction kettle, and carrying out extraction at apressure of 30-40 MPa and a temperature of 40-60 DEG C for 2-4 h under the conditions that absolute ethyl alcohol with a flow of 5-8 L/h serves as a carrying agent and the flow of carbon dioxide is 400-500 L/h. According to the method, the manner of performing ultramicro grinding at first and performing supercritical carbon dioxide extraction next is adopted, so the obtained superfine powder is infull contact with a supercritical carbon dioxide fluid, good extraction effect is obtained, other impurities are not introduced, and the thermal degradation of an extract at high temperature is avoided. Meanwhile, the nutrient substances of the marine product are wrapped and protected by tert-butylhydroquinone before extraction, so the nutrient substances are prevented from deterioration and damage during extraction, and the integrity of the nutrient substances can be guaranteed.
Owner:福建启元堂生物技术有限公司
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