271 results about "Contraction rate" patented technology

The invention discloses a lightweight high-performance foam concrete, which is composed of the following components in parts by weight: 50 to 60 parts of cement, 20 to 35 parts of mineral slag, 15 to 20 parts of fly ash, 5 to 10 parts of gypsum, 60 to 80 parts of fine aggregate, 2.7 to 7.3 parts of additive, 0.1 to 0.2 part of fiber, 32 to 45 parts of water, and 5 to 25 parts of foam. The invention also discloses a preparation method of the foam concrete. The foam concrete has the advantages of small volume-weight, high strength, low water absorption, and small contraction rate, and has the waterproof and anti-cracking functions at the same time.

The invention discloses a high performance cement-base self-leveling mortar. The mortar is characterized by comprising cement, an auxiliary gel material, fine aggregate, a filling material, an additive, and water; wherein the cement is common silicate cement and sulphoaluminate-silicate cement, the auxiliary gel material comprises mineral slag, fly ash, silica fume, and gypsum, and the ratio of common silicate cement to sulphoaluminate-silicate cement to gypsum is equal to 1:0.2-0.6:0.1-0.4. The mortar has a self-leveling function without vibration, so the surface flatness is very high. The curing speed of the mortar is very quick, and after two hours, the strength of the mortar can meet the requirements of subsequent construction. Moreover the mortar has the advantages of low contraction rate, good volume stability, good surface wear resistance, and high compression strength.

The disposable pull-on garment has a longitudinal centerline, a front region, a crotch region, and a back region, the front region and the back region being joined at seams to form a waist opening and leg openings. The pull-on garment comprises a main portion, a side portion, and a waist portion. The side portion is disposed transversely outboard of the main portion. The waist portion comprises a center waist portion, an outer side waist portion, and an inner side waist portion. The center waist portion is disposed longitudinally outboard of the main portion. The outer side waist portion is disposed longitudinally outboard of the side portion, transversely outboard of the center waist portion, and contiguous with the seam. The inner side waist portion is disposed longitudinally outboard of the side portion, transversely inboard of the outer side waist portion, and transversely outboard of the center waist portion. The side portion is elasticized to provide elasticity and comprising a side elastic material to contract and gather at least a portion of the side portion. The waist portion is elasticized to provide elasticity and comprising a waist elastic material to contract and gather at least a portion of the waist portion. Contraction rate of the inner side waist portion is less than that of the center waist portion, and contraction rate of the side portion longitudinally inboard of the inner side waist potion is greater than that of the inner side waist portion.

To provide a composition for a hologram recording material, a hologram recording material and a hologram recording method applicable to a high density optical recording medium, a three-dimensional display, a holographic optical element etc. and capable of attaining a high sensitivity, a high diffraction efficiency, a satisfactory storage property, a low shrinkage rate, a dry process, a multiplex recording property and a high recording density. An unrewritable hologram recording method including a step in which a sensitizing dye absorbs light by an exposure to form an excited state, a chemical reaction step including a color forming reaction involving an electron transfer or an energy transfer from such excited state, and a hologram-forming step by such chemical reaction.

This invention discloses pole plates of Li ionic cells, in which, a micro-porous film is set on the pole plate with PVDF as the matrix and chemical gel formed by chimical cross-link is set in the micro-porous film.This invention also discloses a Li-ionic cell core with said pole plates and a preparation method including: the PVDF film forming chemical gel inside by irradiation and cross-link has the heat contraction rate of nearly zero under 100-220deg.C, which can prevent electronic short circuit of positive and negative pole plates caused by over contraction of intensified switchable Polyolefin micro-hole septums under high temperature when being coated on the pole plates.

The invention discloses a rapid repairing material for table dislocation of a cement concrete road surface, which comprises cement, water, fine aggregate and styrene butadiene latex. The weight ratios of the ingredients are as following: the concrete cement in one cubic meter is less than or equal to 500 kg, the ratio of the water and the cement is from 0.3 to 0.36, the water content in the ratio of the water and the cement contains the water content in the styrene butadiene latex, the solid content in the styrene butadiene latex is 5 percent to 10 percent of the cement, the weight of the repairing material of one cubic meter is about 2400 kg, and the content of the fine aggregate is the weight difference obtained by subtracting the weight of the other ingredients from the total weight of the repairing material of one cubic meter. The invention also discloses a method for rapidly repairing the table dislocation of a cement concrete road surface. The invention has the following advantages that the strength can be rapidly increased, the traffic can be open in 12 hours, the contraction rate is low, and the thin layer repair with the height difference about 1 cm can be carried out.

In an inductance component, a stress is not locally applied even in the condition where heat is applied to entire component, such as when implementing soldering, so that high reliability is realized. For realizing this, the component includes element (5), coil (6) formed in element (5), terminals (7, 8) electrically connected to coil (6), and magnetic layers (9A, 9B) arranged so as to be substantially parallel to a winding surface of coil (6) are formed in element (5) and entire magnetic layers (9A, 9B) is covered with a material of which thermal expansion and contraction rates are constant.

A self-forming container having a continuous side wall with opposing top and bottom edges connected by an interior side wall surface, said side wall preferably having less than 10% shrink at 90° C., and more preferably being nonshrinkable; and a heat shrinkable connecting wall connected to at least first and second opposing portions of the sidewall and forming therewith a adapted for heat activated self-forming into a stand up con figuration having a stable base connected to and supporting said side wall.

The invention provides an optically transparent glue composition with organic silicone liquid.The optically transparent glue composition mainly comprises acrylate-terminated vinyl silicone oil, vinyl MQ silicone resin, vinyl MDT silicone oil, tackifiers, hydrogen-containing silicone oil, photoinitiators, catalysts, inhibitors and the like.The invention further provides a method for preparing the optically transparent glue composition.The method includes proportionally preparing materials; blending the materials to obtain mixtures; purifying the mixtures; defoaming the mixtures at high speeds and packaging the mixtures at high speeds.The optically transparent glue composition and the method have the advantages that glue with the organic silicone liquid can be simultaneously subjected to ultraviolet curing and heat curing, accordingly, the problem of incapability of completing curing on the peripheral edges of screens at one step can be solved, production processes and the manufacturing time can be greatly shortened, the reject ratio of finished products can be reduced, and effects of saving energy and time, reducing the production cost and improving the productivity can be realized; the glue is excellent in impact resistance, bending resistance, high-temperature and high-humidity resistance and yellowing resistance and low in dimensional contraction rate after being cured; bubble and impurities in the optically transparent glue with the organic silicone liquid can be prevented by the aid of the method.

The invention relates to a glass substrate for display device and a method for manufacturing same and provides a glass substrate which is high in strain point and capable of preventing a melting tank from melting loss, a glass substrate which is high in strain point and capable of suppressing devitrification, a glass substrate which is high in strain point and etching speed, and a method for manufacturing the glass substrate. The glass substrate contains Sio2 and Al2O3, 0-8% of B2O3, 0.01-0.8 % of R2O, and 0.05-1 of BaO/RO in mol%, and the strain point is over 670 DEG C. The glass substrate may contain Sio2, Al2O3 and MgO, 0.1-0.9 of MgO/(RO+ZnO), the strain point is over 700 DEG C, and the contraction rate is 5ppm-75ppm. The glass substrate may contain Sio2, Al2O3 and BaO, 0-7% of B2O3, 1-15% of BaO, and less than 6.0 of Sio2/Al2O3, and the strain point is over 700 DEG C. RO represents (MgO+CaO+SrO+BaO), and R2O represents (Li2O+Na2O+K2O).

The invention discloses a shield synchronization slip casting construction technology, comprising the following steps: A) stirring the slip casting material into single grout via a grout mix and feeding system of a mixing station; B) conveying the mixed single grout to shield grout groove through a transportation system; and C) conducting synchronous slip casting to tailskin building interspaces through a shield slip casting system; wherein, in step A), the initial slump is 9-14cm, the sand factor is 50-60%, the specific gravity is not less than 1.9kg/L, the bleeding rate is not more than 5%, the anti-cutting yield strength 8h is more than or equal to 800Pa and the later-stage solid shrinkage is not more than 1%; in step C), the slip casting pressure P=P1+P2, wherein, P1 is a water-soil pressure value around the slip casting point and P2 is pressure loss of the slip casting pipe. The grout in the invention has the advantages of higher anti-cutting yield strength, long service time, no occurrence of eduction and pipe blocking and good peaceability and the like. The invention further has the advantages of low production cost of grout, low slip casting rate, low slip casting volume, no need of secondary supplement slip casting, controllable distortion and settlement of completed ground surface and high quality of tunnel circular forming.

The invention relates to epoxy silsesquioxane/epoxy resin hybridized glue for packaging photoelectric devices and a preparation method thereof. The hybridized glue is prepared by mixing substrate resins, a curing agent and other components, wherein other components comprise the following materials in mass percentage: 12%-18% of modified epoxy silsesquioxane, 36%-42% of bisphenol A type epoxy resins, 30%-38% of polyamide, 5%-10% of N,N-diaminodiphenyl-methane and 0.5%-1.5% of triethylamine, and the structural formula of the modified epoxy silsesquioxane is shown in the specification, wherein Ris shown in the specification. The epoxy silsesquioxane synthesized in the method has high molecular weight, the maximum-average molecular weight reaches 1.1*10<6>, and the weight-average molecular weight reaches 1.21*10<6>. The prepared glue has the advantages of the epoxy silsesquioxane and the epoxy resins and has good heat resistance, cold resistance and corrosion resistance, high bonding performance, low curing contraction rate, good electrical performance, simple preparation process and easy operation of a preparation process, and excellent ultraviolet radiation resistance, chemical corrosion resistance and mechanical performance, wherein the electrical performance achieves the packaging requirements on the photoelectric devices.

A scratch proof film is prepared for arranging a microstructure layer at bottom side of base material and a scratch proof layer on top side of base material, setting concave-convex structure on scratch proof layer, making scratch proof layer have fog degree of 30-98% and surface resistivity of 10 to the power 8-10 Omega/„ as well as pencil hardness of 3H.

The invention relates to preparation and a construction method of a grouting material (referred to as RE-GD) for track filling and secondary grouting. The RE-GD comprises three components, A, B and C. The component A is a modified epoxy resin mixing system, which comprises modified epoxy resin, an active diluent, a toughening agent, an antioxidant, a leveling agent, a defoaming agent and a coupling agent. The component B is a curing agent. The component C is a filler. The high-strength precise non-contraction epoxy resin grouting material for tracking provided by the invention has the advantages of high adhesion to a cement base and a steel base, high strength, good toughness, no expansion, extremely low contraction rate and small amount of dense porosity; excellent properties of polymer material enables the material with characteristics, unmatched by other materials, in corrosion resistance and weatherability performance, and can satisfy usage in different climate environment. The material provided by the invention has long cycle of usage and a general service life of up to 30 years, and can be used as a substitute or be applied to environment and position, which CA mortar or cement base grouting material can not be applied to.

The invention relates to a double curing encapsulating adhesive and a preparation method thereof. The double curing encapsulating adhesive comprises the following raw materials in percentage by weight: 35 to 60 percent of epoxy resin, 2 to 20 percent of polyol, 1 to 20 percent of silane coupling agent, 0.1 to 2 percent of photoinitiator, 0.1 to 2 percent of thermal initiator and 30 to 60 percent of filler. The double curing encapsulating adhesive provided by the invention with low contraction rate and high water resistance and cold and heat circulation resistance can effectively guarantee that encapsulated elements are reliable; the adhesive can cure quickly and completely under ultraviolet (UV) and heat while delivering quick positioning and excellent mechanical properties; with light smell after curing, the adhesive is environment-friendly; and with high storage stability, the adhesive is suitable to adhere electronic elements.

The invention relates to the field of the production of a floor board, and particularly discloses a composite floor with small expansion rate and contraction rate and a production method thereof. The composite floor board comprises a wearable layer, a color film layer and a base material layer from top to bottom in sequence, wherein the base material layer consists of calcium carbonate, PVC (Polyvinyl Chloride), a plasticizer, a stabilizer and a modifier ACR (Acrylics); the production method comprises the steps of processing for shaping, implementing thermal compounding, implementing surface UV (Ultraviolet) and tempering, cooling and finally implementing slicing and grooving. According to the composite floor board and the production method thereof, the calcium carbonate adopted for the composite floor board has a specification of over 500 meshes; the processing temperature is rationally controlled through the production method, so that the contraction rate and the expansion rate can be effectively lowered; consequently, the lowest contraction rate can reach 0.04% and the lowest expansion rate can reach 0.1%; as the volume change of the composite floor board caused by expansion and contraction is greatly decreased, the use performance and the service life of the composite floor board can be effectively improved.

The invention relates to a single-component polyurethane binder and a preparing method and application of the binder, and pertains to the technical field of chemical binder. The binder is got by the following procedures: mixing low-hydroxyl-value dehydrated castor oil and polyaryl polymethylene isocyanate as main raw materials with toluene diisocyanate, refined castor oil, and trimethylolpropane-oxypropylene polyether troil; using stannous octanoate, triethylenediamine and N, N-dimethylbenzylamine as complexing catalyst, and 4-tert-butyl-catechol as antioxidant, and allowing them reacting under 50-60 DEG C. The single-component polyurethane binder is for binding color steel sheets and polystyrene foam sheets, is a castor oil type single-component polyurethane binder; the curing flexibility is good, and the contraction rate is high; the binder is of high binding strength for two interfacing surfaces, and is of low cost in term of raw materials.

A hologram recording material with high sensitivity, high diffraction efficiency, good storability, a small shrinkage ratio, dry processing applicability and a multiple recording performance, which is applicable to high density optical recording media and the like, is provided. The hologram recording material contains the specific acid generator of sensitizing dye.

A flexible substrate includes a flexible mother substrate and a planarization layer on the flexible mother substrate. Here, the flexible mother substrate includes a transparent textile and a resin layer. The transparent textile includes a plurality of first transparent fibers and a plurality of second transparent fibers crossing the plurality of first transparent fibers, and the resin layer coats the transparent textile to fill a space between the first and second transparent fibers. The planarization layer includes an organic material having a curable contraction rate of no greater than about 20%.

A Kinetic Recliner Bed or Chair apparatus intended for enhancing blood circulation, and lymph and neural fluid flow throughout a person's body. The person is placed supinely in a comfortable and relaxed state on a bed or chair member that is driven, either at the nominal cyclic rate of a human lymph system's normal lymphangion contraction rate divided by 2, or alternately, at the nominal cyclic rate of a human lymph system's normal lymphangion contraction rate, in a cyclic tilting seesaw mode that alternatively raises the person's upper torso and head above his or her lower extremities, and vice-versa.