101results about How to "Low water absorption" patented technology

The application discloses a kind of composite super-hydrophobic paper based on alkyl ketene dimer and metal polyphenol network and preparation method thereof, belong to functional paper-based material field.The method is first immersed in 0.25%~5% alkyl ketene dimer emulsion in cellulose paper, is dried at 90~110 DEG C and is cured 48-96h to prepare modified paper;Then, the pH is 8.0-9.0 of tris-hydroxymethyl aminomethane hydrochloride buffer solution, hydrochloric acid dopamine is dissolved in the buffer solution to form dopamine solution, and the concentration is 0.25~20mg / mL of metal ion solution;Finally, the modified paper is immersed in dopamine solution and metal ion solution in turn, and is dried to obtain composite super-hydrophobic paper.The obtained composite super-hydrophobic paper uses cellulose paper-based material as substrate, and hydrophobic layer and metal polyphenol network layer are formed on the surface in turn, the composite paper has super-hydrophobic performance, water barrier performance and photo-thermal response performance, the preparation process is simple, and is suitable for waterproof packaging, self-cleaning surface, anti-icing and deicing and photo-thermal antibacterial and other fields.

The invention provides a low-water-absorption glass bead modified PBT (polybutylene terephthalate) material and a preparation method thereof. The low-water-absorption glass bead modified PBT material comprises the following components in parts by weight: 70-100 parts of PBT resin; 0 to 30 parts of solid glass beads; 0-5 parts of a toughening agent; 0-2 parts of an antioxidant; 0-2 parts of a lubricant; 0-2 parts of black color master batch; 0-2 parts of a coupling agent; 0-5 parts of polytetrafluoroethylene wax; wherein the average particle size of the solid glass beads is 1-50 [mu] m; the average particle size of the polytetrafluoroethylene wax is 3-15 [mu] m, and the weight-average molecular weight of the polytetrafluoroethylene wax is 10000-30000 g / mol; the weight ratio of the solid glass beads to the polytetrafluoroethylene wax is (5-10): 1. According to the invention, the polytetrafluoroethylene wax is added into the solid glass bead modified PBT material, so that the shrinkage difference between the material flow direction and the vertical flow direction is effectively reduced, the water absorption rate of the material is remarkably reduced, the preparation process is simple, and the production process is easy to control.

This invention relates to the field of polymer materials technology, specifically disclosing a flame-retardant thermoplastic elastomer compound and its preparation method. The flame-retardant thermoplastic elastomer compound comprises 50-80 parts SEBS, 10-30 parts PP, 5-15 parts compatibilizer, 10-30 parts composite flame retardant, 3-10 parts plasticizer, 0.2-1 parts antioxidant, and 0.1-0.5 parts lubricant. The composite flame retardant is prepared by reacting and mixing an intumescent flame retardant, barium metaphosphate, boron nitride, triallyl isocyanurate, and SEBS. The flame-retardant thermoplastic elastomer compound of this application possesses good flame retardancy, mechanical properties, and water resistance stability.

The invention provides a composite carbon black material for artificial stone as well as a preparation method and application thereof, the composite carbon black material for artificial stone comprises the following raw materials in parts by weight: 10 parts of carbon black and 3 parts of a siloxane complexing agent, the moisture content of the composite carbon black material is less than 1%, and the particle size is less than or equal to 10 microns. The composite carbon black material for the artificial stone can be applied to production of quartz plates, and the composite carbon black accounts for 2-6% of the mass of the quartz plates. According to the composite carbon black material for the artificial stone as well as the preparation method and the application of the composite carbon black material, the compatibility with a quartzite base material can be enhanced, and the water absorption rate of a plate is reduced, so that the anti-knock performance and the waterproof and impermeable performance are improved.

The application discloses a kind of multistage synergic covalent grafting type hydrolysis-resistant self-cleaning PET submarine cable monofilament and preparation method, the monofilament includes three parts of core layer, skin layer and surface layer, the core layer is the high viscosity polyethylene terephthalate resin containing carbodiimide anti-hydrolysis agent;Skin layer is the modified PET resin of functional polysiloxane covalent grafting, wherein the functional polysiloxane has epoxy end group or isocyanate end group, and main chain has Si-H group;Surface layer is the fluorine-free low surface energy layer formed by polyvinyl long side chain alkane polysiloxane and residual Si-H group in skin layer through hydrosilylation reaction.The application significantly improves the durability of monofilament in humid heat environment, so that it is suitable for long-term humid heat service environment such as marine cable and industrial fabric, and can maintain stable mechanical strength and self-cleaning performance for a long time.

The invention discloses a high-simulation and high-performance stone-imitating bright ceramic tile which sequentially comprises a high-strength green body layer, a functional ground glaze layer, a multi-mode digital texture layer, an interface strengthening-optical adaptation transition layer and a high-transmittance protective glaze layer from bottom to top. The raw materials of the high-strength green body layer comprise spodumene tailing powder and a compound of zirconium silicate and zinc oxide serving as a sintering aid, the water absorption rate is smaller than or equal to 0.2% after sintering, the fracture modulus is larger than or equal to 42 MPa, the high-strength green body layer is covered with the functional ground coat layer, and the raw materials of the functional ground coat layer comprise a porous forming agent and active components capable of reacting with follow-up ink. According to the invention, through multi-modal data acquisition and morphology channel printing, full-dimensional physical recarving of natural stone from macroscopic color veins to micro-crystal fluctuations is realized, and high-refractive-index ink and an interface strengthening-optical adaptation transition layer are combined, so that the appearance of the natural stone is enhanced. The product can present the specific deep feeling, moist feeling and mineral crystal flash of natural stone under any illumination, and the vivid degree which is difficult to distinguish by naked eyes is achieved.

The invention relates to the technical field of packaging materials for electrical components, and discloses a single-component epoxy adhesive for thermosensitive components, which comprises the following components: 5-25 parts by mass of flexible resin; 1-5 parts by mass of high-temperature-resistant resin; 30-50 parts by mass of epoxy resin; 0-5 parts by mass of a pigment; 0-3 parts by mass of an additive; 30-50 parts by mass of a filler; 0-3 parts by mass of a rheological aid; and 5-15 parts by mass of a curing agent. The invention also discloses a preparation and use method of the single-component epoxy adhesive. The adhesive provided by the invention is moderate in viscosity, and a formed adhesive cured product is high-temperature-resistant and high in insulating strength.

The invention discloses ship lock large-volume air-entraining concrete and a pouring vibration exhaust method, and belongs to the technical field of concrete.The ship lock large-volume air-entraining concrete is prepared from 130-160 kg / m < 3 > of cement, 50-70 kg / m < 3 > of fly ash, 50-70 kg / m < 3 > of mineral powder, 600-750 kg / m < 3 > of sand, 1300-1500 kg / m < 3 > of gravel, 3-5 kg / m < 3 > of a water reducing agent, 90-130 kg / m < 3 > of water and 3-4 kg / m < 3 > of an air-entraining anti-cracking agent according to the mixing proportion; a nano-scale super absorbent material is adopted as an air-entraining anti-cracking agent, internal humidity is maintained and a temperature peak value is reduced through water absorption and slow water release, and corresponding nano micropores are reserved in a microstructure through water release and polymer shrinkage, so that the effects of enhancing mechanical properties and resisting cracking after air entraining are achieved.

The application discloses a kind of building waste self-reinforced recycled aggregate preparation methods, comprising the following steps: (1), the building waste containing red brick and hardened cement paste is crushed, and red brick material and the block of hardened cement paste containing are separated out;(2), red brick material is mixed with the solution containing carboxyl ether and is ground, and the modified slurry containing nanoscale red brick particle material is obtained;(3), the block of hardened cement paste containing separated out is immersed in modified slurry, after immersion is completed, the block of hardened cement paste containing is taken out and is dried, and building waste self-reinforced recycled aggregate is obtained;In the solution containing carboxyl ether, solvent is water, and the concentration of carboxyl ether is 0.1-0.8mol / L;The particle size range of nanoscale red brick particle material is 50-200nm;During the process of immersion, the mixture is heated and stirred, and the heating temperature is 40-80 DEG C.The method can prepare building waste self-reinforced recycled aggregate with high strength and low water absorption.

The application discloses a cationic polymer containing a fused ring structure and a preparation method and application thereof, and an anion exchange membrane based on the cationic polymer is prepared by using the cationic polymer containing a fused ring structure in a main chain. By introducing a fused ring structure element into the main chain of the cationic polymer, the interaction force between the formed polymer chains is increased by using the pi-pi interaction between the fused ring structures, the water absorption and swelling of the cationic polymer are inhibited, and thus the anti-swelling ability and the dimensional stability of the anion exchange membrane prepared from the cationic polymer are improved. In addition, by using the high reactivity of the fused ring structure monomer, the molecular weight of the cationic polymer is increased, and other monomers are copolymerized to regulate the performance of the cationic polymer, so that the anion exchange membrane prepared from the cationic polymer has excellent comprehensive performance, and is beneficial to the application in the fields of anion exchange membrane fuel cells and water electrolysis.

The invention discloses a diamine monomer with a side chain containing tertiary butyl and a preparation method and application thereof.The diamine monomer is special in structure, polyesteramide or polyimide can be prepared through reaction of the diamine monomer and a tetracarboxylic acid derivative, the obtained polyesteramide is narrow in molecular weight distribution, the molecular chain is provided with the special structure introduced by the diamine monomer, and the molecular chain is not prone to being damaged. The resin prepared by the preparation method not only has good dissolution film-forming property, but also has excellent dielectric property and lower water absorption property, is high-performance resin, and is widely applied to the fields of communication electronics and aerospace.

The utility model discloses a portable oxygenerator and its gas path system, including outer shell, install the lift handle between the rotating shaft, the one end of telescopic groove inner wall is communicated and installs the accommodation groove, and the telescopic groove inner wall is inserted and installs the telescopic support block, the one end of telescopic support block is fixedly connected with the fixed plate, and the fixed plate is fixed on the fixed plate. And a supporting block is inserted into the inner wall of the fixing plate. According to the portable oxygen generator and the gas path system thereof, the passive pressure equalizing valve does not need to be driven by electricity, the manufacturing cost is reduced by about% compared with that of an electromagnetic valve, moisture can be isolated through the straight-through preventing one-way valve, and the water absorption rate of the molecular sieve is reduced to 10 day lt; the catheter can be wrapped and protected through a wrapping block, can be adsorbed and supported through a supporting foot pad, a telescopic supporting block, a supporting block and a fixing plate, is stably placed, can be conveniently folded and stored through a lifting handle, can be clamped and fixed through a sealing cover and a supporting clamping groove, is prevented from being bent and damaged, and is convenient to use and safer.

The application discloses a kind of thermosetting resin materials for semiconductor chip sealing and preparation method thereof, it is related to epoxy resin technical field.The thermosetting resin materials for semiconductor chip sealing, including the following weight fraction raw materials: epoxy resin 50-60 parts, modified benzo-oxazin 10-15 parts, toughening agent 4-6 parts, inorganic filler 250-300 parts, silane coupling agent 10-15 parts, release agent 1-2 parts, curing agent 25-30 parts, curing accelerator 0.5-0.8 parts;The thermosetting resin materials for semiconductor chip sealing prepared by the application has excellent spiral flow length, bending strength, thermal conductivity, glass transition temperature and lower water absorption.

The invention relates to the technical field of cement insulation board processing, in particular to a foamed cement insulation board and a preparation method thereof.The foamed cement insulation board is of a composite structure with an inner insulation layer and an outer bearing layer, the inner layer is of a closed-cell porous structure formed by foaming Portland cement, polystyrene and hydrogen peroxide, and reinforcing master batch, anti-crack fibers and a water repellent are matched, so that the foam cement insulation board is formed; low heat conduction, low water absorption and high hole wall strength are realized; the outer layer is a compact high-strength hard shell composed of cement, quartz sand, steel fibers, polypropylene, polyvinyl alcohol and PET organic fibers, and has the functions of high fracture resistance, impact resistance, frost heaving resistance, crack resistance and decoration. The two components synergistically solve the contradiction between heat preservation and strength, and have the advantages of no slag falling, no peeling, no thermal bridge, low volume water absorption, slow durability and aging, and excellent comprehensive performance during construction and cutting.

The embodiment of the present application provides a solid buoyancy material and a preparation method and application thereof. The solid buoyancy material comprises an epoxy resin matrix and light fillers dispersed in the epoxy resin matrix; the light fillers comprise hollow glass microbeads A, hollow glass microbeads B and elastic organic expanded beads, and the particle size of the hollow glass microbeads A is greater than that of the hollow glass microbeads B. The solid buoyancy material has excellent waterproof property while having a relatively low density.

The application discloses a kind of halogen-free high-frequency copper-clad plate and its manufacturing method, belong to copper-clad plate preparation technical field, manufacturing method is as follows: fluorine-containing mercaptan grafting polybutadiene, styrene-butadiene-styrene copolymer, dicyclopentadiene phenol epoxy resin, toluene, butanone, propylene glycol monomethyl ether are added into mixing machine, after stirring and mixing, initiator, active ester curing agent, diamond-based flame-retardant filler are added, stirring and mixing 2-4h, obtain resin glue liquid;Glass cloth is placed in resin glue liquid and immersed after taking out, baking, obtain prepreg;Prepreg is laminated, the copper-clad plate obtained by the application has lower dielectric constant, better flame-retardant property, higher heat dissipation performance, lower water absorption and good mechanical processing, etc.Advantages, in the field of communication, vehicle-mounted millimeter wave radar, internet of things, automobile electronics and other fields of high multilayer high-frequency circuit board have broad application prospect.

The invention relates to transparent light-heat curing acrylate modified epoxy resin and a preparation method and application thereof, and the transparent light-heat curing acrylate modified epoxy resin comprises the following components: aliphatic polyurethane acrylate oligomer, acrylate monomer, styrene-maleic anhydride copolymer, adhesion promoter, amino resin, photoinitiator, hydrogenated epoxy resin A and hydrogenated epoxy resin B, the composition is prepared from a thixotropic agent, an anti-aging agent, a UV absorbent, a light stabilizer, a curing agent and an accelerant. The problems that the requirement for glass fibers is high, holes are prone to occurring inside and the like due to insufficient infiltration of pure acrylic ester are solved, and the light photovoltaic flexible assembly prepared from the epoxy resin is excellent in performance and has good market application prospects.

The invention discloses an outdoor magnesium oxysulfate fireproof plate and a preparation method thereof, and belongs to the technical field of light building materials, and the preparation method comprises the steps of filler pretreatment, cement paste preparation, filling reinforcement, molding pouring and segmented maintenance. According to the invention, the recycled foamed ceramic leftover material is used as a core filler, so that the problem of treatment of foamed ceramic processing waste is effectively solved, and the environmental pressure caused by industrial solid waste accumulation is reduced. Meanwhile, part of traditional filler is replaced with waste, the raw material cost for preparing the fireproof plate is greatly reduced, the dual benefits of environmental protection, waste reduction and cost optimization are achieved, and the development trend of green building materials is met.

The application discloses a kind of high weather-proof outer wall special-purpose inorganic stone gel and its preparation process and a kind of inorganic stone preparation process, the inorganic stone gel includes the following weight parts components: geopolymer precursor 35-50 parts;Sulfoaluminate clinker 25-45 parts;Alkali activator 15-17 parts;Nano titanium dioxide 1-4 parts;Hollow glass bead 2-8 parts;Basalt-PVA composite fiber 1.3-1.9 parts;Anti-alkali bleeding stabilizer 0.25-0.8 parts.The beneficial effects of the application are: carbonization resistance, yellowing resistance, long-term ultraviolet aging resistance, low water absorption, excellent impermeability, excellent freeze-thaw resistance, crack resistance and impact resistance, long weathering life, suitable for all scenarios, suitable for industrial production.

The invention belongs to the technical field of polyurethane waterproof coatings, and relates to a bio-based water-based single-component polyurethane waterproof coating and a preparation method thereof, and the waterproof coating comprises the following components in parts by weight: 0.01 to 0.3 part of cellulose ether, 20 to 70.0 parts of bio-based water-based polyurethane emulsion, 0.01 to 0.3 part of pH regulator, 0.1 to 1.2 parts of defoaming agent, 0.1 to 1.0 part of stabilizer, 1 to 50.0 parts of filler and 0 to 40.0 parts of water. The water-based single-component polyurethane waterproof coating disclosed by the invention not only has the excellent performance of polyurethane, but also has the characteristics of greenness, safety and environmental protection of a water-based coating, and accords with a sustainable development concept; the water-based paint has excellent mechanical properties, the water absorption rate of the paint is less than 5%, which far exceeds the standard performance requirements of related water-based products, and the problem of high water absorption rate of the water-based paint is solved, so that the water-based paint can be applied to the long-term water contact environments such as basement side wall waterproofing and road, bridge and tunnel waterproofing.

This invention discloses a low-temperature rapid-fired high-density building ceramic brick and its preparation method, belonging to the technical field of building ceramic materials. The ceramic brick uses potassium-sodium feldspar, kaolin, clay, quartz sand, calcined talc, wollastonite, waste ceramic powder, a low-temperature eutectic densifying component, sodium carboxymethyl cellulose, sodium polycarboxylate dispersant, and water as raw materials. The low-temperature eutectic densifying component has a borosilicate glassy phase coating layer, lithium aluminum silicon crystal nuclei, and a calcium-magnesium flux phase. The brick is prepared by ball milling, spray granulation, aging, pressing, drying, and rapid firing. This invention can promote liquid phase wetting, interstitial filling, and glassy phase bridging under low-temperature rapid firing, improving density, mechanical properties, and the utilization rate of waste ceramic powder.

The invention relates to the technical field of building materials and ocean engineering protection, in particular to a preparation method of a marine concrete heavy anti-corrosion coating. Comprising the following steps: 1, preparing materials and carrying out dry mixing to obtain an inorganic dry powder base material; step 2, preparing and mixing wet materials, taking polymer emulsion, a silane coupling agent and water, and uniformly mixing the polymer emulsion, the silane coupling agent and the water; in a stirring state, slowly dropwise adding the mixed solution into the inorganic dry powder base material in the step 1; step 3, dispersion and defoaming: stirring is kept in the dropwise adding process, a defoaming agent is added, high-speed dispersion is performed until the slurry is in a uniform flow state and has no obvious bubbles, and heavy-duty cement-based composite coating slurry is obtained; 4, film forming construction is conducted, specifically, a concrete base surface is coated with the slurry obtained in the step 3 through a layered coating technology, and an anti-corrosion coating is formed after standing and curing. According to the invention, the physical compactness of the coating is greatly improved, the water absorption rate of the coating is obviously reduced, and the anti-permeability pressure is improved.

This invention relates to the field of new energy vehicle battery pack accessories technology, and discloses an ICCS integrated busbar mechanism and its processing technology. The mechanism includes an FPCA module, an aluminum busbar, an insulating bracket, and series aluminum busbars. The FPCA module is mounted on the insulating bracket to form an independent module. Its flexible circuit board uses a modified fluorinated polyimide insulating substrate, which is polymerized from 2,2'-bis(trifluoromethyl)biphenyl-4,4'-diamine and pyromellitic dianhydride in a specific ratio. The aluminum busbar is soldered to the acquisition pad of the FPCA module, and the series aluminum busbars are connected to the aluminum busbars of each module. The processing technology includes hot-pressing copper-clad board fabrication, reflow soldering, ultrasonic welding of the aluminum busbar, and laser welding of the aluminum busbars. This invention improves the high-temperature resistance and low dielectric properties of the insulating substrate, ensuring the electrical reliability of the busbar mechanism for high-current transmission and signal acquisition under complex operating conditions.

The invention relates to the technical field of mortar preparation, in particular to high-performance waterproof dry-mixed mortar and a preparation method thereof. The high-performance waterproof dry-mixed mortar is prepared from the following raw materials in parts by weight: 300 to 400 parts of cement, 550 to 650 parts of quartz sand, 1.5 to 3.0 parts of silane waterproof agent, 15 to 25 parts of hydrophobic redispersible latex powder, 0.2 to 0.5 part of water-retaining thickening agent, 0.5 to 1.5 parts of polycarboxylic acid water reducing agent, 3 to 8 parts of thixotropic lubricant, 0.3 to 1 part of coagulation accelerator, 20 to 50 parts of superfine filler and 0.5 to 1.5 parts of polypropylene fiber. The technical problem of non-uniform dispersion of trace components in high-performance mortar production is solved through the process combination of premixing the water-retaining thickening agent, the polycarboxylate superplasticizer, the thixotropic lubricant and the coagulant and then performing staged low-speed main mixing on the mixture and other raw materials; the effects of excellent waterproof and anti-seepage performance, excellent mechanical property and bonding strength, excellent crack resistance and high durability are achieved.

The application discloses a resin composition and application thereof, and the resin composition comprises, in terms of solid weight, 10-70 parts of a benzoxazine resin containing unsaturated bonds, and 20-100 parts of a maleimide resin; wherein the benzoxazine resin containing unsaturated bonds is a mixture of a benzoxazine resin containing double bonds and a benzoxazine resin containing triple bonds. Compared with the prior art, the resin composition and application thereof can not only control the reactivity between the maleimide resin and the benzoxazine resin, improve the crosslinking network density, but also is beneficial to controlling the production speed of prepreg, and the prepreg has good apparent quality, and meanwhile has excellent high heat resistance, high modulus, low water absorption, low thermal expansion coefficient and low curing shrinkage.

The utility model discloses an automatic foam light soil pore structure regulation and control device based on rheological properties, and relates to the technical field of foam light soil production equipment. Comprising a pre-stirring system used for weighing cement and circulating fluidized bed fly ash and mixing the cement and the circulating fluidized bed fly ash into a dry material, and the pre-stirring system is communicated with a stirring system used for performing water injection stirring on the mixed dry material; the stirring system is communicated with a foaming system used for foaming a dry material injected with water and a pouring system used for conveying prepared foam light soil, an intelligent regulation and control instrument is arranged on the stirring system, and the pre-stirring system, the stirring system, the foaming system and the pouring system are electrically connected with the intelligent regulation and control instrument. According to the utility model, cement and circulating fluidized bed fly ash are weighed and mixed into a dry material through the pre-stirring system, and then the dry material is injected with water through the stirring cylinder and is stirred and foamed, so that the foamed light soil with better pore structure characteristics such as porosity, pore sphericity and pore size distribution is prepared.

This invention relates to a bio-based polyamide carbon fiber reinforced material, comprising the following components: 100 parts by weight of pentanediamine polyamide resin; 10-30 parts by weight of furanyl polyester resin; 1-5 parts by weight of chain extender; and 10-50 parts by weight of carbon fiber. The preparation method includes acid-alcohol treatment of the carbon fiber: impregnating the carbon fiber in a liquid of polybasic acid and polyol, heating and dehydrating it, then blending the acid-alcohol treated carbon fiber with pentanediamine polyamide resin, furanyl polyester resin, and chain extender, and curing to obtain the reinforced material. This invention improves the bond strength and water absorption of pentanediamine polyamide and carbon fiber, resulting in a reinforced material with strong mechanical properties, low water absorption, and a certain degree of biomass content.

The invention discloses an inorganic microcrystal plastic insulation board and a preparation method thereof. Comprising an aggregate system, a gelling material system and polyvinyl alcohol (PVA) short fibers, and the gelling material system comprises a gelling base material and process water; the ratio of the aggregate system to the gelling base material is (1-1.1 m): 100Kg, and the mass ratio of the process water to the gelling base material is (60-70): 100; the polyvinyl alcohol (PVA) short fibers account for 0.5%-2.0% of the total mass of the cementing material system; the inorganic microcrystal plastic insulation board and the preparation method have the advantages of high strength, low heat conductivity coefficient, light weight and low water absorption.

The application discloses carbonation reinforced coral reef aggregate and a preparation method thereof, and comprises the following steps: mixing 100 parts of carbonation cementing material, 40-70 parts of water and 1-5 parts of cellulose according to mass fraction, fully stirring to obtain a slurry; placing coral reef aggregate A on a screen and fully soaking the coral reef aggregate A in the slurry, taking out the coral reef aggregate A after oscillating the screen for a period of time to obtain coral reef aggregate B; pre-drying the coral reef aggregate B to obtain coral reef aggregate C; and carbonation curing the coral reef aggregate C in a carbon dioxide environment to obtain the carbonation reinforced coral reef aggregate. The application can make more carbonation cementing material penetrate into the pores of the coral reef aggregate under the same water-solid ratio, and can discharge air bubbles in the aggregate by oscillation, so that the pores can be filled with the carbonation cementing material. Then, the carbonation curing technology is used to carbonize calcium silicate and other minerals in the carbonation cementing material to generate calcium carbonate to fill the pores, reduce the water absorption and improve the mechanical properties of the coral reef aggregate.

The invention discloses equipment and a process for preparing hollow glass microspheres for a distributed floating body, specifically, a hollow and porous-wall basic sphere structure design is adopted, and then a dipping strengthening and surface plugging process is adopted, so that the strength of a shell layer is specifically improved, surface pores are plugged, and the water absorption rate is reduced; meanwhile, the surface epoxy shell layer is also used as a transition layer between the small balls and the resin matrix when the distributed floating body is produced.