207 results about "Polystyrene particle" patented technology

The invention relates to the field of polystyrene auxiliaries, and particularly discloses a coating agent for expandable polystyrene as well as a preparation method and application of the coating agent. The coating agent for expandable polystyrene is prepared from the following raw materials in parts by weight: 28 to 42 parts of mono / diglycerol fatty acid ester, 32 to 42 parts of triglyceride, 22 to 32 parts of stearate, 1 to 5 parts of ethylene bis stearamide and 2 to 3 parts of polyvinyl alcohol, and the granularity of the raw materials is 300 to 325 meshes. The coating agent provided by the invention can be used for light-grade, flame-retardant and common-grade expandable polystyrene, and can reduce adhesion and agglomeration among expandable polystyrene particles, enhance the demolding effect and reduce volatilization and loss of a foaming agent and an auxiliary agent.

The invention discloses a co-extrusion-molded microporous polyphenyl particle phase change energy storage gradient water stop thermal insulation structural slab, the thermal insulation structural slab sequentially comprises an EVA water stop layer, a strength layer and a thermal insulation layer from outside to inside, the EVA water stop layer is prepared by doping EVA rubber powder and fly ash into cement; the strength layer is made of high-strength cement; the heat preservation layer is made of microporous polystyrene foaming particles, microcapsules containing phase change materials and foaming cement. Through innovative design and material selection, the heat preservation performance of the gradient water stop heat preservation layer structural slab is gradually reduced from inside to outside so as to meet the requirements of different environment temperatures, the highest waterproof performance is provided on the outermost layer of the structure, and the heat preservation performance is gradually reduced inwards so as to reduce condensation of internal moisture; and an efficient, environment-friendly and economical solution is provided for the building industry. The invention solves the problem of balance between thermal insulation performance and fireproof performance of the traditional building thermal insulation material, and improves the problems of insufficient waterproof performance, limited heat energy storage capacity and the like of the traditional material.

The invention relates to the field of high polymer materials, and particularly discloses a high-resilience TPU shoe sole and a preparation method thereof. The high-resilience TPU sole is prepared from the following raw materials in parts by weight: 100 parts of TPU resin, 4 to 8 parts of carboxylated multi-walled carbon nanotubes, 15 to 20 parts of an aramid fiber porous material, 15 to 20 parts of polystyrene particles, 7 to 10 parts of a thermoplastic polyester elastomer, 0.1 to 0.5 part of an antioxidant, 0.5 to 2 parts of a nucleating agent, 1 to 2 parts of stearic acid and 0.1 to 0.5 part of a foam stabilizer. The TPU sole has the advantages of being high in rebound rate, small in permanent compression deformation, high in wear resistance and good in air permeability.

The invention relates to a mould pressing inorganic modified graphite polystyrene composite insulation board and a preparation method thereof, and the mould pressing inorganic modified graphite polystyrene composite insulation board comprises an insulation layer which comprises an insulation base layer formed by inorganic slurry and graphite modified polystyrene particles; wherein in the thermal insulation base layer, graphite modified polystyrene particles are uniformly coated with inorganic slurry, the peripheries of the graphite modified polystyrene particles are mutually connected through the inorganic slurry, and the graphite modified polystyrene particles and the inorganic slurry form a honeycomb structure; the molded inorganic modified graphite polystyrene composite insulation board comprises the following components: 10-15 parts of graphite modified polystyrene particles; the inorganic slurry is prepared from 80 to 100 parts of cement; 10 to 20 parts of industrial waste residue; 50 to 60 parts of water; 3-5 parts of building rubber powder; and 2-3 parts of an additive.

The invention belongs to the field of building materials technology. For the problem that the building insulation material of the present stage polystyrene board is difficult to recycle after being discarded, the present invention discloses a method for composite modified asphalt using waste polystyrene and cement, comprising the following steps: waste polystyrene is cleaned, crushed into polystyrene particles for standby use after drying, then the matrix asphalt is stirred while heating, polystyrene particles and cement are mixed when being heated to 160-180 DEG C, stirring evenly, then placed in a 120-160 DEG C oven and cultivated at a constant temperature for 0.5-3h, then placed in a high-speed shearing machine and stirred at 200-400r / min for 3-10min, finally placed in a 120-160 DEG C oven and cultivated at a constant temperature for 15-60min, to obtain modified asphalt; the dosage of the waste polystyrene is 0.1-6%, and the dosage of the cement is 0.1-4%. The composite modifier composed of polystyrene / cement of the present invention can improve the high and low temperature performance of asphalt as a whole, realizes the recycling of waste polystyrene, reduces project cost, and realizes the sustainable development of civil engineering materials.

The invention relates to the field of building materials, in particular to a straw fiber recycled aggregate concrete filling block for a composite dense rib plate and a preparation method of the straw fiber recycled aggregate concrete filling block. The straw fiber recycled aggregate concrete filling block is prepared from the following raw materials: 300 to 350 parts of cement, 1200 to 1300 parts of construction waste recycled aggregate, 50 to 100 parts of fly ash, 50 to 100 parts of silica powder, 10 to 20 parts of straw fiber, 5 to 10 parts of polyphenyl particles, 5 to 10 parts of a polycarboxylic acid water reducing agent, 0.1 to 1 part of a foaming agent and 180 to 220 parts of water. And waste is recycled, so that resources are saved, environmental pollution is reduced, and the requirement of sustainable development is met.

The invention relates to the field of building materials, in particular to a template-free multi-layer composite structure self-heat-preservation sound-insulation light inner wall which comprises a light foam concrete layer, a heat-preservation sound-insulation layer, a waterproof layer and a decorative layer. The light foam concrete layer is composed of cement, fly ash, hydrogen peroxide, polyphenyl particles, glass fibers, crushed crude pearlite, vermiculite powder, calcium stearate, expanded graphite, magnesium aluminum hydroxide, magnesium calcium lignosulphonate, ammonium molybdate pentaerythritol ester and titanate melamine salt. According to the contrast test, the construction efficiency, the light weight effect, the heat preservation performance, the sound insulation performance, the waterproof performance and the like of the building interior wall are remarkably superior to those of a traditional interior wall technology, and the building interior wall has wide application prospects and market value.

The present invention relates to the technical field of building thermal insulation materials, specifically to a production process for a flame-retardant polystyrene foam board, comprising the following components in parts by weight: 100 parts of polystyrene particles, 8-12 parts of hydroxy polydimethylsiloxane, 5-15 parts of a foaming agent, 0.5-2 parts of a cross-linking agent, 3-8 parts of flame-retardant particles, and 2-5 parts of a plasticizer. In the present invention, by further processing the polystyrene foam board by puncturing and soaking it three times, a firm adhesion layer is formed on the surface of the foam board, and a multi-layer cooperative structure is constructed inside. In terms of thermal insulation, a dense interface layer suppresses air convection, and a flame retardant and perfluorohexanone fill the pores, effectively reducing thermal conductivity and enhancing thermal insulation effects. In terms of flame retardancy, a silane coupling agent firmly locks perfluorohexanone, ensuring that sufficient flame-retardant gas is released during combustion. The heat-insulating carbon layer formed in conjunction with the flame retardant achieves a synergistic effect of gas-phase flame retardancy and condensed phase barrier, thereby greatly improving flame retardancy.

The invention discloses a fabricated light thermal insulation wallboard and a preparation process thereof, and relates to the technical field of light thermal insulation wallboards, the preparation process comprises the following steps: adding a water reducing agent into deionized water, uniformly stirring, adding cellulose ether, and uniformly stirring to obtain a cellulose ether solution; adding the polyimide hybrid aerogel and a surfactant into a cellulose ether solution, and uniformly stirring to obtain an aerogel cellulose ether solution; cement, silica fume, fly ash and hollow glass beads are stirred uniformly, the aerogel cellulose ether solution is added and stirred uniformly, expanded polystyrene particles are added and stirred uniformly, the mixture is poured into a mold, and vibration, demolding and maintenance are performed to obtain the light thermal insulation wallboard.

The application belongs to the technical field of thermal insulation materials, and particularly relates to a novel thermal insulation material, a preparation method thereof and a cold plate. The novel thermal insulation material comprises the following raw material components: polystyrene particles 70-80 parts; methyl octabromo ether 5-7 parts; ethanol 0.5-1 part; freon 2-5 parts; and modified graphite powder 14-16 parts. The novel thermal insulation material has simple components, and after being prepared through compounding, the thermal conductivity coefficient is significantly reduced, and the novel thermal insulation material also has high strength and pressure resistance, fire resistance and water resistance. When the novel thermal insulation material is used for manufacturing a cold plate, the thickness can be greatly reduced under the same thermal insulation requirement, the space for use is saved, the self-weight is also reduced, and the novel thermal insulation material has a wide application prospect.

The utility model relates to the technical field of polystyrene processing, and discloses a temporary storage box for polystyrene particle processing, which comprises a box body, an open groove is arranged at the top of the box body, a first groove plate is arranged behind the open groove, a second groove plate is arranged in front of the open groove, and the first groove plate and the second groove plate are arranged in parallel. The bottom of the first groove plate and the bottom of the second groove plate are fixedly connected with the top of the box body, sliding plates are slidably connected to the opposite sides of the first groove plate and the second groove plate, motors are fixedly connected to the tops of the sliding plates, rotating rods are fixedly connected to the output ends of the motors, and gears are fixedly connected to the upper portions of the exteriors of the rotating rods. The front side of the first groove plate is fixedly connected with a rack. According to the screening device, the motor, the gear, the rack, the rotating rod, the stirring blades, the open groove and the protective cover are matched to work, the rotating rod and the stirring blades are driven by the motor to rotate and do reciprocating motion in the open groove at the same time, caked materials on the screening plate are scattered, and the screening efficiency is improved.

The invention relates to a vacuum cleaner filter bag for ophthalmic lens sculpture and a method of making a vacuum cleaner filter bag. The vacuum cleaner filter bag includes a filter bag body forming a volume, and expandable polystyrene (EPS) particles disposed within the volume. The service life of the filter bag is prolonged.

The invention discloses an enhanced Raman scattering (SERS) sensor based on a Ti3C2Tx / (001) TiO2 / W18O49 composite heterostructure and application of the SERS sensor, and relates to the technical field of micro-plastics and nano-plastics, and the SERS sensor is prepared by the following steps: dissolving LiF in HCl, stirring, adding Ti3AlC2, carrying out water bath reaction, centrifuging, washing, collecting Ti3C2Tx MXene precipitate, drying, dispersing in deionized water, adding NaBF4 and HCl, stirring, carrying out ultrasonic treatment, reacting, filtering, washing, and drying to obtain the SERS sensor based on the Ti3C2Tx / (001) TiO2 / W18O49 composite heterostructure, thus obtaining the SERS sensor based on the Ti3C2Tx / (001) TiO2 / W18O49 composite heterostructure. And centrifugally washing and drying to obtain the Ti3C2Tx / (001) TiO2 powder. And adding the obtained Ti3C2Tx / (001) TiO2 powder into isopropanol, adding WCl6, stirring, reacting in a reaction kettle, carrying out centrifugal washing, carrying out suction filtration on the Ti3C2Tx / (001) TiO2 / W18O49 on a cellulose filter membrane, drying, and manufacturing the three-dimensional SERS sensor by using a puncher. The detection limit of the sensor on polystyrene (PS) particles is 25 mu g / mL, strong linear correlation (R2 = 0.98) is shown, and the sensor can be used for analyzing an MNPs mixture of three components of PS, polyethylene (PE) and polypropylene (PP) and quantitatively detecting PS microplastics in rainwater, soil and industrial wastewater.

The utility model relates to the technical field of conveying pipelines, and discloses a raw material conveying pipeline for polystyrene particle production, which comprises a pipe body, the front end of the pipe body is fixedly connected with a discharge pipe, the outside of the pipe body is provided with a cleaning mechanism, and the front end of the discharge pipe is provided with a butt joint mechanism; the cleaning mechanism comprises a first fixing plate, a second fixing plate is arranged outside the first fixing plate, dismounting and mounting assemblies are arranged in the first fixing plate and the second fixing plate, a motor is fixedly connected to the front end of the second fixing plate, a rotating disc is fixedly connected to the driving end of the motor, a clamping block is fixedly connected to the rear end of the rotating disc, and the clamping block is fixedly connected to the rear end of the rotating disc. And the exterior of the clamping block is slidably connected with a scraping plate. According to the utility model, the scraping plate scrapes on the inner wall of the pipe body by virtue of the rotating block, so that raw materials are prevented from being attached, a good anti-blocking effect is achieved, the fixed plate assembly is disassembled, the pipeline is conveniently and comprehensively maintained and cleaned, and the long-term stable operation of the pipeline is ensured.

The application relates to the field of polymer material processing, and particularly discloses a coating agent for expandable polystyrene particles, a preparation method and application thereof. The coating agent for expandable polystyrene particles is prepared from the following components in parts by weight: 20-30 parts of a film forming agent; 30-40 parts of an emulsifier; 30-35 parts of a lubricant; and 10-15 parts of an anti-permeation material. The emulsifier comprises decaglycerin decastearate and glycerin monostearate in a weight ratio of 1: (1-2). The anti-permeation material is prepared from a functional monomer and activated graphene. The functional monomer comprises 2-acrylamide-2-methylpropanesulfonic acid and / or sodium p-styrenesulfonate. The product can be used for apparent protection of expandable polystyrene particles, can effectively improve the problems of adhesion and caking of EPS particles in the foaming process, and greatly reduces the possibility of damage to the coating part in the process of friction between different EPS particles.

The invention belongs to the technical field of building thermal insulation materials, and particularly relates to an environment-friendly furniture wall material and a preparation method thereof. The wall material comprises a thermal insulation layer and a decorative coating arranged on the surface of the thermal insulation layer, wherein the thermal insulation layer comprises the following raw materials in parts by weight: 30-45 parts of cement, 20-30 parts of fly ash, 8-13 parts of polystyrene particles, 5-9 parts of high-entropy boride aerogel, 3-4 parts of alkali-resistant gridding cloth, 0.2-0.5 part of a surfactant, 0.3-0.5 part of a water reducing agent, 0.2-0.6 part of a water retaining agent and 25-40 parts of water. The high-entropy boride aerogel is added into the thermal insulation layer, and the alkali-resistant gridding cloth is used, so that the wall material has good mechanical property and thermal insulation property, and is good in water resistance and permeability resistance. Besides, solid wastes such as fly ash and ardealite are adopted to replace part of raw materials of the wall material, so that high-value utilization of the wastes can be promoted, environmental pollution is reduced, and the wall material is environmentally friendly.

The utility model provides a basement waterproof protection component which is installed at the corner position of a waterproof layer, the basement waterproof protection component comprises a transverse edge and a vertical edge, the transverse edge is horizontally distributed, the vertical edge is vertically distributed, the vertical edge is divided into a long arm and a short arm relative to the transverse edge, the long arm is located on the lower portion, and the short arm is located on the upper portion; the basement waterproof protection component is filled with modified polystyrene particle lightweight concrete. And the short arm of the vertical side is a side mold for pouring concrete above the top plate of the basement. The basement waterproof layer can be protected, the side formwork can serve as a side formwork to facilitate follow-up cast-in-place concrete operation on a basement top plate, the risk that waterproof materials are damaged and reworked is greatly reduced, and meanwhile the construction cost is reduced; the components are light in self weight and convenient to install and transport, and the overall protection effect is improved due to the non-uniform interiors of the components; in addition, due to the steel wire mesh embedded in the component and the gridding cloth laid on part of the surface, the strength and reliability of the component can be further improved under the condition that the weight of the component is not obviously increased.

The invention relates to the technical field of refining of high-purity boric acid, and particularly discloses a method for removing divalent metal ions in high-purity boric acid, which comprises the following steps: dissolving the high-purity boric acid in water, filtering, adsorbing by adsorbent resin, filtering to obtain a refined boric acid solution, cooling, crystallizing, evaporating, crystallizing, carrying out suction filtration, and crushing to obtain the refined boric acid. The preparation method of the adsorption resin comprises the following steps: (1) blending polystyrene master batches with acetyl chloride, dispersing, and adding Lewis acid for reaction to obtain acetylated polystyrene particles; and (2) dispersing acetylated polystyrene particles, mixing with p-aminobenzene arsenic acid to react, filtering, and washing with alcohol to obtain the adsorption resin. After the high-purity boric acid is treated by the adsorbent resin prepared by the invention, the purity of the high-purity boric acid can reach 99.99%, and the effect of removing divalent metal ions in the high-purity boric acid can be realized.

The utility model relates to the technical field of aluminum alloy, and discloses a sound insulation and heat preservation aluminum alloy section bar convenient to install, which comprises an aluminum alloy section bar body, an installation structure is arranged on the aluminum alloy section bar body, and the aluminum alloy section bar is conveniently positioned and fixed by a nut through an installation positioning hole. A worker can conveniently control a tool to conduct installation operation on the aluminum alloy profile, installation of the aluminum alloy profile is facilitated by arranging an installation structure, the aluminum alloy profile is reinforced by arranging a reinforcing structure, a reinforcing heat insulation block is fixed through an arranged connecting column, and polystyrene particles are added into the connecting column, so that the heat insulation effect of the aluminum alloy profile is improved. The inner corners of the aluminum alloy profile are reinforced and prevented from deformation by arranging the triangular reinforcing blocks, the sound insulation effect and the heat insulation capacity of the aluminum alloy profile are improved by integrating the sound insulation layer and the heat insulation layer in the aluminum alloy profile, and the wear resistance of the aluminum alloy profile is improved by arranging the wear-resistant layer on the surface of the aluminum alloy profile.

This invention discloses a high-performance vitrified microsphere composite polystyrene particle insulation board and its preparation method, comprising the following steps: premixing hydrophobic vitrified microspheres and expandable polystyrene particles coated with expanded graphite at a mass ratio of (2.5~4):1 to obtain composite lightweight aggregate. The insulation board prepared by this invention, with a dry density of only 184-193 kg / m³, exhibits a compressive strength as high as 0.275-0.302 MPa, significantly superior to traditional inorganic insulation boards (0.15-0.25 MPa) and organic insulation boards (0.10-0.15 MPa); its thermal conductivity is as low as 0.034-0.041 W / (m·K), and its insulation efficiency is more than 40% higher than that of traditional inorganic materials, while also possessing Class A fire safety performance; furthermore, the process is simple and controllable, with an industrial solid waste utilization rate of up to 70%, demonstrating significant economic benefits and environmental value, and possessing broad prospects for widespread application.

The application relates to a preparation method of an anti-shrinkage shock-absorbing gasket and the shock-absorbing gasket, and the preparation method comprises the following steps of S1: mixing and stirring 95-105 parts of polystyrene particles with 1-3 parts of polyvinyl alcohol particles or polycarbonate particles according to weight parts to form mixed particles; S2: heating the mixed particles until melting to form molten materials; S3: after the molten materials are cooled and formed at least once, sheet blank is formed, an insulating sheet is arranged between two pieces of the sheet blank, and the two pieces of the sheet blank are connected to each other to form a three-layer sheet, the three-layer sheet is extrusion formed to form a smooth sheet, and the smooth sheet is dried; S4: the dried smooth sheet is extrusion formed again to form a textured sheet; and S5: the textured sheet is cut to obtain the anti-shrinkage shock-absorbing gasket. The anti-shrinkage shock-absorbing gasket can improve the resilience of the gasket, thereby improving the utilization rate of the gasket, and the gasket has high anti-shrinkage.

The present invention relates to the field of modified diene-containing (co)polymers, in particular a modified styrene-butadiene copolymer, which can be used as flame retardants for expandable polystyrene polymer compositions; in particular, the invention relates to a modified diene-containing (co)polymer, a method for preparing it, and its use as a flame retardant for expandable polystyrene; the modified diene-containing (co)polymer claimed in the invention is characterized by high thermostability, namely a 5% weight loss temperature of at least 180°C, a molecular weight of at least 1500 g / mol, and a halogen content of at least 35% by weight; the tertiary and / or allyl halide content is on the scale of 0 to less than 1.5%, and it does not affect the polymerization process and the formation of polystyrene granules, and it allows obtaining polystyrene granules with a yellowness index of 2 to 6 units, comparable to the yellowness index of polystyrene granules containing HBCD (from 0 to 3 units).

The invention relates to the technical field of plastic processing, and discloses a drying integrated process for expandable polystyrene particle production, which comprises the following steps: step 1, a pre-foaming stage: reducing the density of EPS particles; according to the drying integrated process for production of the expandable polystyrene particles, three key steps of pre-foaming, curing and drying are integrated in a closed and intelligently controlled system, in the pre-foaming stage, the EPS particles containing a foaming agent are expanded into large-volume light foam particles through steam heating, and then the light foam particles are separated from the foaming agent; the preliminarily expanded particles enter a curing area and stay for a period of time at a relatively low temperature to stabilize the internal structure and preliminarily dehydrate, then the cured particles are directly conveyed to a drying area, residual moisture is thoroughly removed by adopting a microwave technology, and an intelligent control system is arranged in the whole process to monitor and adjust operation parameters of each stage in real time; therefore, a plurality of steps of the process can be integrated into a continuous process.

The utility model discloses a heat insulation plate with a rubber powder polyphenyl granule protective layer, which relates to the technical field of heat insulation plates, is used for solving the technical problem that the adhesive force of the rubber powder polyphenyl granule protective layer of the existing heat insulation plate is not strong, and comprises a core body, a coating layer and a protective layer formed by rubber powder polyphenyl granules, the core body is wrapped by the wrapping layer, the wrapping layer comprises a metal wire mesh formed by metal wires, the metal wire mesh is arranged on the outer side of the wrapping layer, the protective layer is attached to the outer side of the metal wire mesh, and a glass wire mesh formed by cross combination of glass wires is arranged in the protective layer. The metal wire mesh is additionally arranged between the coating layer and the protective layer and wraps the outer side of the coating layer, the adhesive force of the protective layer is enhanced, the compactness and stability of the whole structure are enhanced, and the technical problem that the adhesive force of a rubber powder polyphenyl granule protective layer of an existing heat insulation plate is not high is solved.

The invention relates to the technical field of high polymer materials, and discloses a polystyrene composition suitable for free foaming, polystyrene particles and a polystyrene free foaming body. The polystyrene composition contains rubber, thermoplastic resin and modified polystyrene, and the weight ratio of the content of the modified polystyrene to the content of the thermoplastic resin is 1 or below. Relative to 1000 parts by weight of the total weight of the thermoplastic resin and the modified polystyrene, the content of the rubber is less than 250 parts by weight; the modified polystyrene comprises a poly (conjugated diene-styrene) grafted structure; the content of a poly conjugated diene-styrene grafted structure in the modified polystyrene is more than 100 ppm. According to the polystyrene composition and the polystyrene particles formed by the polystyrene composition, the migration phenomenon of polystyrene molecules and thermoplastic resin in the free foaming forming period can be effectively avoided, and a polystyrene free foaming body with foaming performance and excellent physical performance can be obtained through smooth foaming.

The invention discloses a novel energy-saving and environment-friendly secondary structure building wall and a preparation process, and relates to the technical field of semiconductor chip processing, the novel energy-saving and environment-friendly secondary structure building wall comprises a light steel structure frame, lining plates are fixedly connected to the two sides of the outer surface of the light steel structure frame, and the light steel structure frame is filled with a light concrete layer; the heat insulation supporting connecting mechanism is high in manufacturing speed, materials are saved, on-site manufacturing and pouring are achieved, the heat insulation supporting connecting mechanism is light, the load of a main body structure can be reduced, water and electricity pipelines can be pre-buried in advance, doors and windows can be conveniently installed, the heat insulation supporting connecting mechanism can be directly connected with the light steel structure frame, and a window beam does not need to be additionally arranged; and the lightweight concrete layer prepared by mixing the modified polyphenyl particles and the concrete has heat preservation and sound insulation functions, and the vertical rods and the transverse rods inside and outside can be separated through the arranged heat insulation supporting and connecting mechanism, so that the contact area between the vertical rods and the transverse rods on the two sides is reduced, heat bridges can be reduced, and the heat preservation and heat insulation effects are improved.

The application relates to the technical field of new wall building materials, and discloses a building energy-saving thermal insulation wall composite material and a preparation method thereof. The preparation method of the building energy-saving thermal insulation wall composite material comprises the following steps: loading eutectic hydrated salt in modified diatomite to obtain a diatomite-based phase change material; modifying the diatomite-based phase change material through 3-(2,3-epoxypropoxy) propyl trimethoxysilane and a flame retardant to obtain a functionally modified diatomite-based phase change material; mixing microsilica powder, the functionally modified diatomite-based phase change material, calcium oxide, double-coated foamed polystyrene particles, a polycarboxylic acid-based high-performance water reducing agent and deionized water in proportion, performing mold pressing, standing, demolding and obtaining the building energy-saving thermal insulation wall composite material; the building energy-saving thermal insulation wall composite material has good heat insulation performance and simultaneously has flame retardant performance, and can be used in an outer wall thermal insulation material with high fireproof performance.

This invention relates to a high-flowability, high-toughness, and high-gloss ABS resin and its preparation method, belonging to the field of synthetic resin technology. The invention involves introducing small-particle-size polystyrene latex as a seed latex during the preparation of EBR latex, constructing an EBR latex with a polystyrene core and a polybutadiene shell. This is followed by the preparation of high-rubber ABS resin powder. SAN resin, additives, and antioxidants are then added and thoroughly mixed before extrusion using a twin-screw extruder at 200–220°C to obtain the aforementioned high-flowability, high-toughness, and high-gloss ABS resin. The increased volume of the polystyrene particles within the rubber particles improves the mechanical properties of the ABS resin. Furthermore, the small-particle-size polystyrene particles melt into molten styrene during ABS resin processing, significantly improving the flowability and deformation capacity of the polybutadiene rubber particles, thus enhancing the flowability and gloss of the ABS resin.

A premixing method of expandable polystyrene particles and sodium silicate solution, characterized in that a premixing device is provided above a drying stirrer and is connected with an expandable polystyrene particle bin and a sodium silicate solution bin respectively, when it is needed to premix expandable polystyrene particles and sodium silicate solution, expandable polystyrene particles are provided, and according to the volume ratio, 0.3-0.4 times of the volume of the expandable polystyrene particles of sodium silicate solution, while spraying industrial sodium silicate solution in the cylinder by starting the atomizing nozzle, the expandable polystyrene particles are carried by the pressurized gas and sprayed to the sprayed sodium silicate solution, and the premixing of the expandable polystyrene particles and the sodium silicate solution is completed in the cylinder of the premixing device. The method provided by the application can greatly reduce the input amount of sodium silicate solution.

The invention relates to the field of high polymer material processing, and particularly discloses a coating agent for expandable polystyrene particles as well as a preparation method and application of the coating agent. The invention discloses a coating agent for expandable polystyrene particles. The coating agent is prepared from the following raw materials in parts by weight: 20-30 parts of a film-forming agent; 30 to 40 parts of an emulsifier; 30 to 35 parts of a lubricant; 10 to 15 parts of an impermeable material; the emulsifier comprises polyglycerol decastearate and glyceryl monostearate according to a weight ratio of 1: (1-2), the impermeable material is prepared from a functional monomer and activated graphene, and the functional monomer comprises 2-acrylamide-2-methylpropanesulfonic acid and / or sodium p-styrenesulfonate. The product provided by the invention can be used for apparent protection of the EPS particles, can effectively improve the adhesion and caking problems of the EPS particles in the foaming process, and greatly reduces the possibility of the situation that the coating part is damaged in the friction process of different EPS particles.