236 results about "Sodium polyacrylate" patented technology

The invention relates to the technical field of medical dressings, in particular to a perianal drug dressing of a multi-layer flow guide composite fabric and a preparation method and application of the perianal drug dressing of the multi-layer flow guide composite fabric. The perianal drug dressing is of a four-layer structure, a wet tissue adhesion layer is made of polydopamine modified chitosan / oxidized hyaluronic acid hydrogel, and wet-state adhesion is achieved; the drug sustained-release layer is used for dispersing mesoporous silica loaded with ciprofloxacin hydrochloride / defensin and chitosan microspheres loaded with epidermal growth factors / lonicera japonica into a polycaprolactone fiber membrane to achieve synergistic antibacterial and healing promotion; the directional flow guide layer is of a gradient wettability sandwich structure with a bionic micro-channel, and one-way rapid drainage can be achieved; the high-absorption outer layer is carboxymethyl cellulose / sodium polyacrylate composite sponge, liquid is locked efficiently, the wound surface is kept dry and comfortable, the clinical problem in perianal infection wound treatment can be effectively solved, and the treatment effect and the patient comfort are remarkably improved.

The invention relates to the technical field of building materials, in particular to a high-elasticity polyurethane-asphalt composite road crack repair material and a preparation method thereof, and the high-elasticity polyurethane-asphalt composite road crack repair material comprises the following raw materials: an asphalt-based material, functional modified polyurethane, a polyether-polyolefin block copolymer, functional rubber, 2, 6-di-tert-butyl-4-methylphenol and sodium polyacrylate. According to the invention, a lipophilic functional group is introduced into a molecular chain of the functionalized modified polyurethane, so that the functionalized modified polyurethane can interact with alkyl in asphalt to form a more stable synergistic network structure, and the phase separation phenomenon of the polyurethane and the asphalt is effectively reduced; the modified polyurethane not only improves the elasticity, flexibility, temperature resistance and crack resistance of the composite material, but also optimizes the processability of the material, enhances the interface bonding force, and further improves the repair effect and the road durability.

The invention discloses a solid ultrasonic gel patch as well as a preparation method and application thereof, and belongs to the technical field of medical chemistry. The solid ultrasonic gel patch is prepared from an acrylamide monomer, polyvinyl alcohol, sodium polyacrylate, sodium carboxymethyl cellulose, nano silicon dioxide, propylene glycol, glycerol, acrylic acid, triethanolamine, a cross-linking agent, an initiator and water according to a specific ratio. The prepared solid ultrasonic gel patch is highly matched with human soft tissue in acoustic impedance (about 1.62-1.63 * 10 < 6 > Pa.s / m), low in acoustic attenuation coefficient (less than or equal to 0.034 dB / (cm.MHz)), moderate in skin adhesion, excellent in flexibility and moisture retention, capable of solving the problems that a traditional ultrasonic coupling agent is inconvenient to use, easy to dry, poor in experience and the like, and suitable for acoustic wave conduction in ultrasonic examination and treatment.

The invention discloses an engineering residue soil improvement matrix and application thereof, the engineering residue soil improvement matrix comprises a base layer and a planting layer, the base layer comprises 50-70 wt% of engineering residue soil, 10-15 wt% of humus soil, 6-8 wt% of a fiber material, 3-5 wt% of a slow release fertilizer, 1-2 wt% of sulfur powder, 2-4 wt% of sodium polyacrylate, 3-5 wt% of polyacrylamide, 2-4 wt% of sodium hydroxide, and 3-4 wt% of a straw decomposition agent; the planting layer comprises 25 to 50 wt% of engineering residue soil, 20 to 30 wt% of peat soil, 4 to 6 wt% of compost, 6 to 8 wt% of a fiber material, 3 to 5 wt% of a slow release fertilizer, 1 to 2 wt% of sodium polyacrylate, 1 to 2 wt% of sodium hydroxide, 3 to 4 wt% of straw biochar, 3 to 4 wt% of a straw decomposition agent, 2 to 4 wt% of zeolite, 3 to 5 wt% of desulfurized gypsum, 1 to 2 wt% of nitrogen-fixing bacteria and 1.5 to 3 wt% of plant seeds. On the basis of a thick-layer base material spraying slope protection technology, spray-seeding materials are improved, waste muck is recycled, and land occupation and water and soil pollution caused by traditional muck landfill or stacking are avoided.

The invention provides a sodium ion specific fluorescence labeled transparent soil sample as well as a preparation method and application thereof, and belongs to the technical field of rock soil and geological engineering. The method comprises the following steps: firstly, sequentially carrying out hydrophilization treatment, solvent evaporation and dissolution on a sodion combined benzofuran isophthalate probe to obtain a probe mother solution; mixing the probe mother solution, a buffer solution, an inorganic sodium salt solution and a solvent to prepare a fluorescence labeling pore solution; and finally, mixing the sodium polyacrylate particles and the fluorescence labeled pore liquid, and performing vacuum saturation treatment to obtain the transparent soil sample. The transparent soil sample provided by the invention still keeps excellent optical transparency while having sodium ion specific response capability, so that a stable and reliable experimental medium is provided for in-situ, real-time and full-field observation of sodium ion migration.

The invention relates to an additive for improving refrigeration efficiency of liquid water and a production process thereof, and belongs to the technical field of water additives. The additive comprises 70-80 parts by weight of a carrier, 3-6 parts by weight of modified sophorolipid, 1-2 parts by weight of sodium polyacrylate and 0.5-1.5 parts by weight of sodium molybdate, the carrier is of a core-shell structure, the core of the carrier is nano-copper, and the shell of the carrier is hydrophilic mesoporous silica doped with carboxylated carbon nanotubes; according to the additive prepared by the invention, the refrigeration efficiency of water is improved through the interaction among the carrier, the surfactant and liquid water.

The utility model discloses a fresh-keeping device for agricultural product transportation, and relates to the technical field of agricultural product transportation, the fresh-keeping device comprises a box body, a sealing cover, a phase change material layer, a humidity adjusting system, a buffer structure and an intelligent monitoring module, the box body is of a double-layer heat insulation structure, the outer layer is an EPS heat insulation layer, the inner layer is a PE layer, and the middle is filled with phase change materials; the humidity adjusting system comprises a water absorption pad located at the bottom of the box body and a breathable film located at the top of the sealing cover, the buffering structure is a supporting frame, and the surface of the buffering structure is covered with a nano-silver antibacterial coating. Through the cooperation of the double-layer heat insulation structure (EPS + PE) and the phase change material (the phase change temperature of 0-10 DEG C), the temperature in the box is kept stable in a passive mode, the respiration and microbial activity of agricultural products are inhibited, and compared with traditional normal-temperature packaging, the fresh-keeping period is prolonged by 30%-50% (for example, the fresh-keeping period of strawberries is prolonged from 3 days to 7 days). The water absorption pad (sodium polyacrylate) absorbs condensate water, redundant water vapor is discharged in combination with the BOPP anti-fog breathable film (the micropores are 0.1-1 micron), and the humidity is accurately controlled to be 85%-95%.

The invention discloses a high-porosity low-thermal-conductivity cement aerogel plate and a preparation method thereof, and belongs to the technical field of preparation of aerogel materials. The method comprises the following steps: preparing nano water-saturated resin from sodium polyacrylate alkali-resistant water-absorbent resin, mixing the nano water-saturated resin with cement, silica fume and other raw materials, and performing strickling or spray layering molding and microwave heating curing to obtain a finished product. Through the synergistic effect of the nanometer sacrificial template and microwave curing, the porosity of the product is larger than or equal to 96%, the heat conductivity coefficient is smaller than or equal to 0.026 W / (m.K), the compressive strength is larger than or equal to 0.8 MPa, the problems that in the prior art, the porosity is insufficient, the heat conductivity coefficient is high, the period is long, and performance is difficult to consider are solved, the process is simple and controllable, and the method is suitable for large-scale application of building heat preservation.

The invention discloses a sodium polyacrylate and attapulgite dual-network hemostatic hydrogel and a preparation method thereof. The preparation method comprises the following steps: firstly, dispersing attapulgite in ethanol to form an attapulgite dispersion liquid; then modifying the surface of the attapulgite by utilizing a silane coupling agent; and dissolving a certain amount of surfactant, sodium acrylate and initiator, adding the modified attapulgite and cross-linking agent to obtain a water phase, slowly adding the oil phase material, and carrying out high-speed shearing and heating polymerization to obtain the double-network hydrogel with the hemostatic effect. Compared with a single-network hydrogel, the double-network hydrogel has the advantages that the strain linear viscoelastic area is wider, the deformation resistance is better, the hemostatic property and the mechanical strength are synchronously improved, and the organic-inorganic hybrid hydrogel has a good application prospect in the fields of hemostasis and wound healing and has a wide application prospect in the fields of hemostasis and wound healing. The device is especially suitable for acute wound hemostasis and medical scenes needing certain mechanical support, and has high practical application value.

The invention discloses easy-to-disperse diamond grinding fluid and a preparation method thereof, and relates to the technical field of grinding fluid. The easy-to-disperse diamond grinding fluid is prepared from the following raw materials in parts by weight: 1 to 20 parts of modified diamond micro powder, 40 to 80 parts of deionized water, 1 to 10 parts of polyethylene glycol 6000, 0.5 to 1.2 parts of sodium carboxymethyl cellulose, 1 to 20 parts of glycerol, 1 to 10 parts of triethanolamine, 0.3 to 0.7 part of sodium polyacrylate, 0.05 to 5 parts of 1, 2-benzisothiazolin-3-ketone and 1 to 10 parts of a modified silane coupling agent. According to the easy-to-disperse diamond grinding fluid, through the synergistic effect of the modified diamond micro powder and the modified silane coupling agent, the dispersity is excellent, and the stability is high; the formula is scientific, polyethylene glycol and other assistants are matched, precise process parameters and graded filtration are combined, the grinding efficiency is high, the surface smoothness of a workpiece is good, the antibacterial property and storage stability are good, and the application scene is wide.

This invention belongs to the field of roadbed solidification technology and relates to an additive for solidifying slag and its preparation method. Calculated by weight, it includes the following components: 15-25 parts mineral admixture, 5-10 parts modified diatomaceous earth, 1-1.5 parts activator, and the balance cement, with a total mass of 100 parts. This application uses an activator and steel slag and blast furnace slag powder to prepare a solidification material. The combined effect of these two components can simultaneously improve the early and late strength of the solidified soil. Simultaneously, by modifying the diatomaceous earth, the dispersibility of diatomaceous earth and carbonaceous powder in the cementitious material is improved, enhancing the bonding performance of cement. Utilizing the property that diatomaceous earth and sodium polyacrylate aggregate in the aqueous environment and calcium oxide in cement to form water-insoluble crystalline substances, the strength and water erosion resistance of the solidified soil are improved.

The invention relates to porous hydrogel based on a photo-thermal material as well as a preparation method and application of the porous hydrogel, and relates to the technical field of hydrogel. The preparation method comprises the following steps: mixing a photo-thermal material with sodium alginate and sodium polyacrylate, adding lauryl sodium sulfate for foaming, and then performing freeze crosslinking and electrostatic self-assembly, thereby obtaining the photo-thermal composite material. The porous hydrogel based on the photo-thermal material prepared by the preparation method provided by the invention can efficiently realize interface evaporation and has excellent salt resistance and antibacterial performance, the pure water evaporation rate can reach 3.03 kg.m <-2 >. H <-1 >, the evaporation rate in 20% saline water is kept at 2.43 kg.m <-2 >. H <-1 >, and after the porous hydrogel is in dynamic contact with escherichia coli for 18 hours, macroscopic bacterial colonies do not exist, and the antibacterial rate reaches 99%; in addition, self-floating can be achieved, cost can be saved in practical application, and a new thought is provided for the interface evaporator for sea water desalination.

The invention discloses a water retention and disease prevention type Chinese cabbage seedling culture substrate based on a mineral composite material and a preparation method thereof, and relates to the technical field of agricultural seedling culture, the Chinese cabbage seedling culture substrate comprises the following materials: modified zeolite, activated vermiculite, decomposed straw powder, ground phosphate rock, decomposed sheep manure, sepiolite powder, a sodium polyacrylate water retention agent and a functional agent, the modified zeolite, the activated vermiculite, the sepiolite powder and the sodium polyacrylate water-retaining agent are added to form a high-efficiency synergistic effect, so that the balance of water retention, fertilizer retention and air permeability of the matrix is realized, stable water and nutrients are continuously supplied to root systems of Chinese cabbage seedlings, and the utilization efficiency of water and fertilizer is remarkably improved; the functional agent, the decomposed straw powder and the decomposed sheep manure are added to form an efficient synergistic effect, the absorption efficiency of nutrients in the matrix is improved, meanwhile, functional bacterium metabolites can promote root development, and finally, the synergistic growth promoting effect of sufficient nutrient supply and efficient nutrient absorption is achieved while it is guaranteed that the matrix is free of disease hidden danger.

This invention relates to the field of textile dyeing and finishing technology, specifically to a dispersing and leveling agent and its application in the dyeing and finishing of high-proportion spandex blended fabrics. The dispersing and leveling agent comprises the following components by mass percentage: 50%–56% polyethylene glycol fatty acid ester, 6%–12% low-foaming EO / PO block polyether, 5%–8% branched isomeric alcohol polyoxyethylene ether, 5%–8% polyol fatty acid ester, 1%–4% low molecular weight sodium polyacrylate, and the balance being deionized water. The dispersing and leveling agent prepared by this invention not only significantly improves the dispersion stability of dyes but also effectively enhances the lubrication and protection of spandex fibers, thereby effectively suppressing defects such as color spots and patches caused by fiber stress release during the dyeing process. It is particularly suitable for polyester-spandex blended fabrics with a spandex content as high as 25%–40%.

The invention relates to the technical field of filtering materials, and mainly relates to an air filtering material and a preparation method thereof. The invention relates to an air filtering material, which comprises the following components: 60-70 parts by weight of wood pulp fiber; 10 to 20 parts by weight of a modified PAN nanofiber; 1-3 parts by weight of a modified PTFE emulsion; 5 to 10 parts by weight of modified PLA; 0.1 to 1 part by weight of chitosan; and 0.01 to 0.1 part by weight of sodium polyacrylate. The preparation method of the air filtering material comprises the following steps: soaking wood pulp fibers in water, and pulping; mixing the pulped wood pulp fibers, the modified PAN nanofibers, the modified PTFE emulsion, the modified PLA, chitosan and sodium polyacrylate to obtain mixed paper pulp; carrying out papermaking by utilizing the mixed paper pulp; and drying and calendering to obtain the air filtering material. The air filtering material provided by the invention also has the effects of high moisture resistance and strong antibacterial property while ensuring high filtering performance.

The invention particularly relates to an anti-skid coating material with a wet self-adhesion function and a preparation method thereof, and the method comprises the following steps: adding a sodium polyacrylate aqueous solution into a dopamine hydrochloride aqueous solution, uniformly mixing, then adding a buffer solution to adjust the pH value to be alkaline, standing for reaction, filtering, washing, and drying to obtain the anti-skid coating material with the wet self-adhesion function. A mixed solution containing sodium polyacrylate / polydopamine is obtained; drying, crushing and ball-milling the obtained mixed solution to obtain sodium polyacrylate / polydopamine micro powder; adding PVB into absolute ethyl alcohol, dissolving to obtain a PVB ethanol solution, then adding the obtained sodium polyacrylate / polydopamine micro powder into the PVB ethanol solution, homogenizing at a high speed to obtain a mixed liquid, and carrying out vacuum defoaming to obtain the anti-skid coating material which takes PVB as a binder and has a wet self-adhesion function. When the obtained coating material is coated on an object, the micro powder is bonded on a base body to form a rough surface, so that the friction force of the ground can be effectively increased, the dry and wet friction coefficient is remarkably improved, and people are safer during walking.

The application discloses a kind of based on asphalt pavement milling material's prefabricated asphalt brick and its preparation method, belong to recycling technology field of renewable resources, the method includes: waste asphalt pavement is broken and is screened to obtain recycled asphalt mixture;First with regenerant, aromatic compound and basalt fiber dry mixing and standing activation;Again with cement, silica ash dry mixing;Subsequently, add water and polyacrylic acid sodium wet mixing mortar;In the state of stirring, add emulsified asphalt and mix to obtain mixing material;Finally, vibration forming, demolding curing prefabricated asphalt brick is prepared.Compared with prior art, by step mixing process and the synergistic effect of multiple functional components, high-mixing resource utilization of asphalt milling material is realized.The prefabricated asphalt brick prepared has a dense structure, high bulk density, high compressive strength and excellent water resistance, effectively solves the problem of milling material solid waste disposal, is economical and environmentally friendly, and is suitable for popularization and application.

The invention relates to a lotus root starch pearl powder ball and a making method thereof. The lotus root starch pearl powder ball comprises the following components in parts by weight: 10-35 parts of lotus root starch, 0-15 parts of cassava starch, 5-10 parts of acetylated distarch phosphate, 0-10 parts of white granulated sugar, 0.1-0.5 part of guar gum, 0.1-0.3 part of sodium polyacrylate, 30-45 parts of water, 0-15 parts of soft stuffing and 30-35 parts of sweet water. The preparation method has the advantages that lotus root starch is used as a main raw material, and the instant pearl balls which can be repeatedly frozen and thawed and have better normal-temperature storage stability after being reheated are provided.

This invention provides a medical cold compress hydrogel bandage, relating to the biomedical field. It is a bandage roll structure, primarily comprising a bandage fabric body capable of being rolled into a roll. In its unfolded state, the bandage fabric body has a gel layer and a connector fixedly disposed on one surface, with the gel layer and connector positioned near the two ends of the bandage. The gel layer is used for direct contact with the skin during bandaging, and the connector is used to fix the bandage ends to the fabric surface of the bandage fabric body after bandaging. When the bandage fabric body is rolled into a roll, the gel layer end is located at the outer end of the roll, and the connector is located at the core of the roll. The gel layer includes component A, component B, and purified water. Component A mainly includes glycerin, sodium polyacrylate, and a self-made composite crosslinking agent, while component B mainly includes kaolin and tartaric acid. This invention ensures both the ease of use of the bandage roll and its ability to be easily unrolled and used within a relatively long shelf life.

The application discloses a kind of nano silver slow-release particles, preparation method and self-cleaning mask atomizer, the nano silver slow-release particles are made of 0.1% to 5% silver powder, 20% to 50% sodium hexametaphosphate, 30% to 50% calcium acetate, 1% to 10% zinc oxide and 10% to 20% polyacrylic acid sodium composition.The nano silver slow-release particles of the application can release silver ions in the nano material in water body, with the advantages of drinking safety, persistent antibacterial and the like.The nano silver slow-release particles are fixed in the mask atomizer, the nano silver slow-release particles can release ppb level concentration of silver ions in water body or liquid, and the silver ion-containing bacteriostatic water body can efficiently clean and bacteriostatic treatment of atomizing cup, mask, atomizing device and connecting piece, and can also be drunk or inhaled by people along with the atomization process.Meanwhile, the bacteriostatic water body does not cause damage to the atomization function of the atomizing device, and the silver ions remaining on the surface after washing the mask atomizer with clean water can also keep the atomizing equipment clean for a long time, and the practicability is better.

The invention relates to the technical field of cosmetics, in particular to a skin care product composition containing deep sea water mineral powder as well as a preparation method and application of the skin care product composition. The skin care product composition is prepared from deep sea water mineral powder, butanediol, glycerin, trehalose, DNA sodium, fucose, adenosine, nicotinamide, hydrolyzed hyaluronic acid, sodium hyaluronate, allantoin, dipotassium glycyrrhizinate, a licorice root extract, a white perilla leaf extract, an angelica koreana root extract, a herba houttuyniae extract, a pinus densiflora leaf extract, sodium polyacrylate, EDTA disodium and phenoxyethanol. The preservative is prepared from the following raw materials: chlorphenesin, 1, 2-hexanediol, lactobacillus fermentation lysate and deionized water. The skin care product composition can synergistically promote collagen synthesis, improve skin roughness, improve glossiness and repair a barrier, and has the characteristics of stability and safety.

The invention relates to the technical field of polymer composite materials, in particular to a phenolic melt-blown fabric applied to tunnel fire prevention and a preparation method of the phenolic melt-blown fabric. 5-18 parts of a space-time adaptive heterogeneous flame retardant topological agent; 10 to 25 parts of dynamic self-adaptive strain energy storage ceramic microspheres; 10 to 20 parts of ammonium polyphosphate; 5 to 10 parts of melamine cyanurate; 3-8 parts of a modified triazine charring agent; 1 to 3 parts of plasma modified two-dimensional transition metal sulfide nanosheets; 0.5 to 2 parts of fluoroalkyl silane modifier steam; 2 to 6 parts of a microencapsulated silicate ester self-repairing agent; 50 to 100 parts of deionized water; 1 to 5 parts of sodium carboxymethyl cellulose; and 1 to 5 parts of sodium polyacrylate. Intelligent flame retardance is realized through phase change and network reconstruction of the space-time adaptive heterogeneous flame retardant topological agent at high temperature, so that the material has excellent adaptive fire resistance, high mechanical strength, damage self-repairing and super-hydrophobic characteristics.

This invention relates to a hydrogel isolation and protection device for cervical cancer brachytherapy and its preparation method. The preparation method includes the following steps: S1. Obtaining dried sodium polyacrylate particles and polyacrylamide powder separately, and mechanically mixing them uniformly in a dry state to obtain a highly absorbent dry-state mixed filler; S2. Preparing a polymer bag using a polymer material; S3. Inserting the outlet end of a water injection conduit into the polymer bag, and filling the polymer bag with the dry-state mixed filler; S4. Sealing the open end of the polymer bag to the outer wall of the water injection conduit to form a closed isolation device. The entire preparation process is carried out in a non-sterile environment, and microbial control of the device is limited to the outer surface of the polymer bag. This hydrogel isolation and protection device can be prepared using the above method.

The application discloses a rough grinding liquid for diamond substrates and a preparation method thereof, and a rough grinding method for diamond substrates, and relates to the technical field of diamond processing. The rough grinding liquid for diamond substrates comprises the following components in mass parts: diamond 0.5-1.5 parts, dispersing agent 0.1-1 part, pH regulator 1-5 parts, suspending agent 0.1-1 part, and water 88-98 parts; wherein the D50 of the diamond is 10-50 mu m; the suspending agent comprises at least one of xanthan gum, carbomer, sodium polyacrylate and bentonite; and the dispersing agent comprises at least one of polymaleic anhydride, sodium pyrophosphate, anhydrous sodium metasilicate and polyacrylamide. The technical scheme of the application can solve the problems of low grinding rate, large surface roughness and high total thickness deviation of the existing grinding liquid for diamond substrates by adjusting the particle size of the abrasive and the composition of the suspending agent and the dispersing agent.

The invention relates to the technical field of functional paste, and particularly discloses water-based conductive silver paste, which is prepared from the following components: 50 to 60 percent of silver-coated copper powder, 0.5 to 1 percent of sodium polyacrylate, 1.5 to 3 percent of sodium carboxymethyl cellulose, 0.5 to 1.5 percent of polyvinyl alcohol, 0.3 to 2.0 percent of copovidone, 0.5 to 4.0 percent of fumed silica, 0.2 to 2.0 percent of surfactant, 0.6 to 1.4 percent of cosolvent and the balance of 0.08 to 0.12 M sodium dihydrogen phosphate / disodium hydrogen phosphate buffer solution. The content of silver in the silver-coated copper powder is 25-35%; furthermore, the water-based conductive silver paste can also comprise one or more conductive filler auxiliary materials selected from carbon nanotubes and silver-plated glass beads, and the content of the conductive filler auxiliary materials is 1-4%. The water-based conductive silver paste provided by the invention has the advantages of low cost, good environmental protection property, low drying temperature, stable performance and the like, and has a very good application prospect.

The invention discloses tailing-based autoclaved aggregate as well as a preparation method and application thereof, and belongs to the technical field of building materials. The tailing-based autoclaved aggregate is prepared from the following raw materials in percentage by mass based on the total weight of the dry basis of the aggregate: 66-70% of composite tailing powder, 21-25% of calcium-based solid waste and 5-9% of a composite adhesive, wherein the composite tailing powder is composed of iron tailings and gold tailings according to the mass ratio of 3: 4-1: 1, the composite adhesive comprises calcium sulfate dihydrate, hydroxypropyl modified starch and sodium polyacrylate, and the mass ratio of the three components is (3-6): (1-1.5): (1-1.5). The coarse aggregate for the concrete is prepared by compounding the gold tailings and the iron tailings together and adopting the composite adhesive composed of the calcium sulfate dihydrate, the hydroxypropyl modified starch and the sodium polyacrylate through the static pressure molding and autoclaved curing process, so that the problem that in the prior art, when tailing slag is adopted as the concrete aggregate, the coarse aggregate is not easy to deform can be effectively solved. And the strength and durability of the concrete cannot be ensured.

The invention discloses a self-curing pavement base material based on modified household garbage incineration slag and a preparation method thereof, belongs to the technical field of preparation of pavement base materials, and aims to solve the technical problem that the water-retaining property, crack resistance and durability of the pavement base material in the prior art need to be further improved. The method specifically comprises the following steps: uniformly dry-mixing cement, aggregate and hydrophilic modified slag aggregate in a mixer, adding mixing water, and uniformly mixing to obtain a mixture; according to the invention, the pretreated household garbage incineration slag is used as a functional aggregate, and a hydrophilic functional layer formed by a dopamine copolymer, self-repairing modified silica sol and sodium polyacrylate is introduced into pores of the functional aggregate, so that the aggregate-cement interface performance is synergistically enhanced, and the water-retaining property, crack resistance and durability of a base material are improved.

The invention provides a freeze-drying composition capable of improving skin feeling as well as a preparation method and application of the freeze-drying composition. The freeze-drying composition comprises hydrolyzed collagen, sodium polyacrylate, sodium alginate and functional components, the functional component comprises any one or a combination of at least two of madecassoside, pentapeptide-48 or oat beta-glucan. The hydrolyzed collagen, the sodium polyacrylate and the sodium alginate in the freeze-dried composition disclosed by the invention are synergistically matched, so that the stability of a product and the use skin feeling of the product can be improved, and the activity of functional components is improved.

The invention relates to the technical field of oil-gas field development, in particular to a mechanical property modifier, a preparation method and application. The invention relates to a mechanical property modifier. The mechanical property modifier is prepared from the following raw materials: serpentine, silica sol, allyl polyglycol ether polycarboxylic acid and sodium polyacrylate. The invention provides a mechanical modifier preparation method, which comprises: (1) crushing serpentine, and carrying out acid washing to obtain serpentine wet powder; (2) carrying out a reaction I on a mixture I containing serpentine wet powder and silica sol to obtain modified serpentine; and (3) carrying out a reaction II on a mixture II containing the modified serpentine, the allyl polyglycol ether polycarboxylic acid solution and the sodium polyacrylate solution to obtain the mechanical property modifier. The mechanical property modifier provided by the invention can obviously improve and enhance the mechanical property of high-temperature oil well set cement, so that the high-temperature oil well set cement has the characteristics of high strength and high toughness.

The application provides a kind of bionic anti-crack asphalt mixture and its preparation method, belong to building material modification technical field, the bionic anti-crack asphalt modifier, raw material includes polyacrylic acid sodium solution, sodium chloride solution and calcium chloride solution.The bionic anti-crack asphalt modifier provided in the application forms a three-dimensional structure of interaction by the interaction of hydrogen bond, ionic bond and covalent bond, so that the ions in chitosan solution, polyacrylic acid sodium solution, sodium chloride solution and calcium chloride solution form a three-dimensional structure of interaction, while improving the mechanical strength, significantly improve the anti-crack performance and self-repairing ability of the material.The bionic anti-crack asphalt modifier and matrix asphalt, mineral aggregate are combined, so that the obtained bionic anti-crack asphalt mixture has better anti-crack function without affecting the performance of asphalt pavement.