746results about How to "Good expansion performance" patented technology

The invention provides a low-expansion coefficient polyvinyl chloride alloy material and a manufacturing method thereof. The ingredients of raw materials of the alloy material comprise a polyvinyl chloride substrate, a heat-resistant modifier, a heat stabilizer, a lubricator, a filler and a processing agent, and the alloy material is manufactured by a melt blending technique. The processing agent and the filler in the ingredients of the raw materials of the invention are the processing agent that is subjected to modification by a new method and the filler that is subjected to organic treatment, and by means of a mechanochemical reaction, self-plastification, toughening and reinforcement of the PVC can be combined organically to improve compatibility and dispersity of the polyvinyl chloride, the filler and heat-resistant resin, thus settling the problem about the contraction between the improvement of heat expansion performance and heat resistance of the PVC, and processing performance, strength and toughness of the PVC; the polyvinyl chloride engineering plastic with low expansion coefficient, high heat resistance, high strength, high toughness, excellent aging resistance and outstanding processing performance is manufactured; the invention has extensive industrial market prospect and the manufacturing method thereof is simple in technology, convenient in operation and control, stable in quality and high in production efficiency.

The invention relates to thermoexpandable thermoplastic microspheres which are mainly prepared by carrying out suspension polymerization on olefine polymerizable monomers and expandable substances. The thermoexpandable thermoplastic microspheres have a core-shell structure which uses the thermoplastic polymers as the shell and the expandable substances as the cure. The invention is characterized in that on the basis of 100 wt% as the total weight of the olefine polymerizable monomers, the olefine polymerizable monomers are composed of 30-90 wt% of acrylonitrile, 5-50 wt% of methacrylate monomers, 1-20 wt% of acrylamide monomers, 0.01-1.0 wt% of fluorine-containing acrylate monomers and 0-40 wt% of acrylic monomers. The start T of the thermoexpandable thermoplastic microspheres is 160-200 DEG C.

The present invention relates to a process for producing monodisperse anion-exchanger gels with high stability, purity and coarse particle size greater than 800 μm starting from a monodisperse bead polymer with a swelling index of from 2.5 to 7.5 and more than one subsequent feed procedure without any separation between the polymerization steps and then modifying to give the anion exchanger.

The invention discloses a functional nutrition fertilizer, which comprises the following raw materials in parts by weight: 200-500 parts of organic wastes, 20-60 parts of grass carbon, 60-120 parts of livestock manure, 200-600 parts of rice washing water, 50-100 parts of seaweed mud, 10-50 parts of EM bacteria agent, 1-3 parts of ferrous sulfate, 1-3 parts of copper sulfate, 1-3 parts of zinc sulfate, 0.5-2 parts of manganese sulfate, 0.5-3 parts of ammonium molybdate, 0.3-2 parts of sodium tetraborate, 0.3-3 parts of strontium nitrate, 0.5-1 parts of selenium dioxide, 2-6 parts of magnesium sulfate, 3-8 parts of potassium chloride, 2-8 parts of calcium carbonate, 3-10 parts of bentonite, 5-10 parts of urea, 10-50 parts of traditional Chinese medicine extract, and 10-30 parts of traditional Chinese medicine residue fermented product. According to the functional nutrition fertilizer, the nutrition components are complete and balanced, the disease and insect resistance capacity of soil can be enhanced, the fertilizer efficiency of soil can be increased, and the functional nutrition fertilizer has no environment pollution. The invention further discloses a preparation method of the functional nutrition fertilizer.

The present invention discloses a watermelon juice probiotic fermented beverage and a preparation method thereof. The beverage preparation method uses watermelons as raw materials, scientifically blends prebiotic factors, does not add any essences and coloring matters, mainly uses low-temperature processing technology such as ultrasonic wave cleaning, high-pressure pulsed electric field treatment, biological enzymolysis, vacuum degassing, etc. in the whole process, replaces the existing heat sterilization and enzyme blunting technology, maintains the color and luster, flavor and mouth feel of the natural watermelon juice to a maximum degree, enhances the non-biological stability and biological stability of the watermelon juice, reduces the addition of chemical additives, increases the juice squeezing rate and food safety of the watermelon juice, and has a probiotic live bacteria content of 7 multiplied by 10^11 to 8 multiplied by 10^11 cfu/ml. The watermelon juice probiotic fermented beverage is environmentally friendly, can be processed into probiotic solid beverage and quantitatively packaged beverage which have natural taste, are nutritious and health-care, are convenient to drink, and have longer shelf lives, opens up a new way for watermelon deep processing and industrial development, and can achieve better economic and social benefits.

The present invention discloses process of synthesizing expanded granular profile control agent with oil production mud, and the synthesized profile control agent is used in the deep profile control of macroporous oil reservoir. The expanded granular profile control agent is prepared with ternary polymer system of acrylic acid, acrylamide and cross-linking agent and through adding oil production mud, oxidant and reductant in certain weight proportion to produce adiabatic free radical polymerization forming colloid block and subsequent palletizing, stoving and crushing to required granularity. The said process changes the oil production mud into useful resource and the prepared expanded granular profile control agent has the features of heat resistance, salt tolerance, high expanding performance, long stable period, etc.

This invention discloses a method for preparing bentonite inorganic gel. The method comprises: mixing bentonite filter cake, sodium salt powder and urea powder to obtain a mixture, drying, pulverizing, and uniformly mixing with gelating agent to obtain bentonite inorganic gel. The sodium salt powder is one or more of sodium carbonate, sodium fluoride and sodium silicate. The addition amounts of sodium salt powder and urea powder are 2-10 wt. % and 0-20 wt. % of bentonite filter cake, respectively. The gelating agent is one or more of glues and cellulose substances, and the addition amount is 1-30 wt. % of the mixture. The method has such advantages as simple process, high efficiency, and high product performance, no toxicity and no harm, and is suitable for mass production.

The invention discloses a self-compacting non-shrinkage concrete-filled steel tube, belonging to the technical field of concrete. The self-compacting non-shrinkage concrete-filled steel tube is prepared from the following components in parts by weight: 360-400 parts of cement, 53-100 parts of coal ash, 15-35 parts of ground slag, 50-80 parts of a compound expansion agent, 700-770 parts of mixed sand, 1040-1070 parts of gravel, 150-160 parts of drinking water and a high performance admixture, wherein the amount of the high performance admixture accounts for 1.7-1.8% of the total mass of a cementing material by mass percent. The self-compacting non-shrinkage concrete-filled steel tube provided by the invention has good self-compacting property, expansibility, fluidity, slump loss resistance,cohesiveness, segregation resistance and higher compression strength; furthermore, the expansion process and strength of concrete-filled steel tube are synergistically developed.

A self-leveling cement mortar dry powder for insulated composite wallboard waterproof cover, and an insulated wallboard solve technical problem in a prior art that self-leveling cement mortar with weak waterproofness causes weak insulation effect of an insulated wallboard. A self-leveling cement mortar dry powder for insulated composite wallboard waterproof cover is employed as a technique. Ingredients of the self-leveling cement mortar dry powder comprise a compound impervious component; and the impervious component is prepared by mixing a redispersible high-molecular polymer and one of an organosilicon waterproof agent and a stearate, or a mixture of the two, and accounts for 0.6-4.3wt% of the self-leveling cement mortar dry powder. A special impervious ingredient is added to enhance compactness, microdilatancy and low dry shrinkage property of the cement based self-leveling mortar, so as to substantially increase waterproof function and endurance of the cement based self-leveling mortar. Therefore, a problem that a cladded super-light foaming cement sheet material loses insulation function due to water penetration and problems of flame resistance and endurance are solved fundamentally.

The invention relates to a gel hemostatic material and a preparation method thereof. The gel hemostatic material achieves the effect of blocking hemostasis in such a way that a nucleophilic polymer and an amino acid oligomer are in cross-linking reaction with an electrophile polymer to generate a three-dimensional polymer in situ. A gel hemostatic material composition and a preparation method thereof have the advantages that the raw material ratio is controlled accurately, the reasonable gel forming time can be achieved, the gel forming time is less than 10 seconds, the expected strength is relatively high, and the testing result shows that the elongation at break of the biologic gel hemostatic material is 300-600 percent, and the compression strength of the biologic gel hemostatic material is larger than 3 Mpa; the requirement of surgical operation can be met well.

The invention discloses a high-temperature wear-resisting coating for casting and a preparation method thereof. The coating comprises the following components: a fireproof material, a carrier, a bonding agent, a suspension agent and an auxiliary agent. The invention further designs the preparation method of the high-temperature wear-resisting coating for casting. The preparation method comprises the following steps: putting the suspension agent and the carrier into a dispersion machine and uniformly agitating; then adding the fireproof material and continually agitating; and slowly adding the bonding agent and the auxiliary agent in sequence under an agitating state; and agitating uniformly to obtain the high-temperature wear-resisting coating for casting. The high-temperature wear-resisting coating for casting is low in price, and is clean and is free from pollution; the preparation method is simple and the coating is high temperature resistant and wear resistant and is not easy to release; and a die for casting can be protected and the quality of a casting piece can be improved.

The invention relates to the field of nano silica processing treatment and in particular relates to a method for preparing high-expansion nano silica composite microspheres. The method for preparing high-expansion nano silica composite microspheres comprises the following steps: performing surface grafting modification on SiO2 nanoparticles by using a surface modifier; adding the modified SiO2 nanoparticles into an organic solvent, simultaneously adding a dispersing agent, monomer acrylamide, acrylic acid, a cross-linking agent and an initiator, and ultrasonically and uniformly dispersing; introducing nitrogen into the dispersed solution for bubbling to remove oxygen; carrying out a polymerization reaction after oxygen removal; and repeatedly washing by using ethanol, thereby obtaining the composite microspheres. The microspheres disclosed by the invention have high structural stability, even if the solution temperature is close to the boiling point, the microspheres do not split, and the expansion properties are improved; and moreover, the initial size of the microspheres is less than 1 micron, the microspheres can be applied to plugging of tiny cracks, the final expansion ability can be over 10 times, and the microspheres have good salt tolerance, wide application range and reliable plugging capacity.

The invention discloses a Russian fat coal participant coking and coal blending method, which comprises a step of mixing and blending various single coking coals. The single coking coals in percentage by weight comprise 0-6 percent of gas coal, 8-12 percent of Russian fat coal, 15-18 percent of 1/3 coking coal of G being more than 85, 12-15 percent of 1/3 coking coal of G being less than 85, 15-20 percent of coal of G being more than 85, 20 percent of coal of G being less than 85 and 15-20 percent of lean coal. Under the process condition without stage crushing, coal briquette process or tamping coking, the method of the invention reasonably and efficiently utilizes the Russian fat coal, the coke quality is not deteriorated, and the coal blending cost can be reduced.

The invention discloses a high titanium-bearing heavy slag C50 self-compacting weakly expansive concrete-filled steel tube, and belongs to the field of building materials. The concrete-filled steel tube is prepared from the following raw materials: cement, coal ash, composite expanding agent, macadam, high titanium-bearing heavy slag, a tackifying plasticity-maintaining super-dispersing additive, micron-sized modified absorbent cotton cellulose and water. The prepared concrete-filled steel tube has the characteristics of high flow state, low gas content, large strength extra coefficient and stable expansibility; the problem of poor working performance caused by application of high titanium-bearing heavy slag to concrete is solved; due to the water absorption and water releasing effect of the porous structure, the internal maintenance effect on the concrete-filled steel tube can be realized, the shrinkage compensation effect of the expanding agent on the concrete-filled steel tube is improved, the concrete-filled steel tube is weakly expansive to be suitable for jacking pouring of upper chord pipes and lower chord pipes of a concrete-filled steel tube arched bridge and a concrete-filled steel tube truss bridge, as well as high-casting pouring of a concrete-filled steel tube pier column. Therefore, the problem of disengaging caused by poor-density pouring of the concrete-filled steel tube is solved effectively.

The invention relates to a regeneration method of casting wet type mixed old sand. The regeneration method comprises the following steps: preprocessing casting wet type mixed old sand; wiping with water; drying; preheating; roasting; and post-processing. In the invention, components, such as bentonite, coal dust and ashes, in wet type old sand are effectively removed by a water wiping process, and a residual resin film in mixed old sand is thoroughly decomposed by a roasting process. The regeneration cost is low, and the regeneration effect is great. Actual production and verification show that the performance indexes of regenerated sand reach or surpass those of new sand. The regeneration method is successively applied to the core making production of cold boxes and has remarkable economical and social benefits.

The invention discloses an unmanned aerial vehicle-based real-time three-dimensional reconstruction method. The method comprises the following steps of: 1, acquiring scene data, obtaining depth data through a depth sensor according to the acquired scene data, and obtaining a depth map; 2, carrying out noise preprocessing on the depth map obtained in the step 1, wherein the noise preprocessing comprises a morphological operation and a filtering operation; 3, carrying out acceleration processing on the noise preprocessed depth map, wherein the acceleration processing comprises carrying out uniform sampling on two-dimensional points in the noise preprocessed depth map; 4, converting the depth map accelerated in the step 3 into a point cloud; 5, modeling the point cloud obtained in the step 4;and 6, carrying out noise re-processing on the modeled point cloud obtained in the step 5, so as to realize three-dimensional reconstruction. According to the method, real-time three-dimensional reconstruction can be carried out on scenes, so that possibility is provided for subsequent intelligent processing of unmanned aerial vehicles and application of the unmanned aerial vehicles can be propelled.

The invention discloses lithium ion battery positive electrode material precursor nickel-cobalt-manganese hydroxide powder and a preparation method thereof. The lithium ion battery positive electrode material precursor nickel-cobalt-manganese hydroxide powder is represented by the general formula NixCoyMnz(OH)2. The preparation method comprises the steps that an alkali solution is added into a reaction device; a metal salt solution comprising nickel-cobalt-manganese and an alkali solution are continuously dropped on the liquid level of the alkali solution, such that a neutralization precipitation reaction is carried out; the produced nickel-cobalt-manganese hydroxide slurry is concentrated and is introduced into the reaction device, and a reaction is continued; final product nickel-cobalt-manganese hydroxide slurry is fetched, and is filtered and dried. The nickel-cobalt-manganese hydroxide provided by the invention has the advantages of uniform particle size, less micro-powder, high crystallinity, and large primary particles.

The invention discloses a light filling material for mines. The filling material is prepared from components in parts by mass as follows: 65-85 parts of a base material, 10-15 parts of a coagulant, 1-5 parts of an excitant, 1-10 parts of an adjusting admixture, 0.1-1 part of a foaming agent and 0.1-1 part of a foam stabilizer. To meet the demands for upper corner filling and airtight wall construction, the light filling material has the characteristics of being light in weight, non-ignitable, small in density, adjustable in strength and setting time, excellent in expansibility and crushing resistance, free of obvious attenuation of water passing strength, environment-friendly, low in cost and the like and has remarkable effects on filling in a drilling site and upper corners of the mine, and the problems of gas accumulation and spontaneous combustion of coal can be effectively solved.

The invention discloses a probiotic foodstuff and a preparation method thereof. In the fermentation process of yoghourt, a functional starter, germinated brown rice, Chinese herbal medicine extract with anti-heat-and-cold irritability and a stabilizing agent capable of effectively enhancing stability are added; temperature-varying yoghurt fermentation enables propagation of lactic acid bacteria to be maximized and anti-heat-and-cold stress capability of lactic acid bacteria to be improved; non-thermal processing technology is employed for pretreatment of yoghurt and fruit and vegetable pulp so as to prevent infection with infectious microbes in preparation process, improve juice yield of the fruit and vegetable pulp, increase the content of soluble cellulose in the fruit and vegetable pulp and prevent browning of the fruit and vegetable pulp; and a scientifically compounded cryoprotectant with good anti-refrigeration effect is added during mixing of the fruit and vegetable pulp and the yoghurt. Eventually, the prepared probiotic foodstuff has fine mouthfeel, uniform texture, stable state, natural quality, a great number of live bacteria, strong functionality and long shelf life, wherein the content of the live bacteria is 1.75 * 10<11> to 2.55 * 10<11> CFU/g, and the shelf life is 30 to 36 months at normal temperature.

The invention provides artificial sodium bentonite, comprising the following substances in parts by mass: 100 parts of bentonite, 3-10 parts of sodium modifier, 0.5-2 parts of synergist and 1-3 parts of tackifier, wherein the sodium modifier is a sodium salt. By adopting the artificial sodium bentonite provided by the invention, non-sodium bentonite, especially calcium bentonite can be effectively remodeled into sodium bentonite, so that the overall physical and chemical properties of the bentonite are improved to compensate the deficiency of the sodium bentonite storage amount, and the requirements of the society are met.

The invention provides a thermal expansion microspherical composition with foaming performance at low temperature. The composition comprises an alkene unsaturated monomer and a foaming agent, wherein the alkene unsaturated monomer comprises the following components: acrylonitrile, acrylics monomer and polar end-containing monomer. Mainly by replacing vinylidene chloride monomers in the prior art with acrylics monomers, the thermal expansion microspheres with low Tstart (70-90DEG C) and high expansion performance can be obtained, the dispersibility of the microspheres in water can be improved to achieve the intended purpose by adding polar end-containing alkene unsaturated monomer.