3734 results about "Maleic acid" patented technology

The invention relates to the field of matt films, in particular to a BOPP matt film suitable for a direct coating process and a preparation method of the BOPP matt film. The BOPP matt film suitable for the direct coating process comprises an upper surface layer, a middle core layer and a lower surface layer which are sequentially arranged, the upper surface layer is an extinction layer and comprises polypropylene random copolymer, 40-51 wt% of high-density polyethylene, 2-3 wt% of n-alkyl chain modified hyperbranched polyester and 5-8 wt% of maleic anhydride-styrene melt grafted polypropylene random copolymer; the middle core layer comprises homo-polypropylene; and the lower surface layer comprises homo-polypropylene. According to the matt film, the roughness of the matt layer can be improved by optimizing the components of the matt layer, the problem of whitening'hard spots' on the surface of the matt film in a direct coating process is solved, and then the quality of a coated matt film product is improved, so that the appearance quality of products such as laminated paper, paper boxes and labels which are subsequently laminated is ensured.

The invention discloses a polypropylene composite material based on rare earth element modification and a preparation method and application thereof, and belongs to the technical field of medical instruments, and the polypropylene composite material comprises the following raw materials in parts by weight: 100 parts of medical grade PP, 3-8 parts of a rare earth organic complex, 5-10 parts of nano-hydroxyapatite, 2-5 parts of a maleic anhydride grafted PP compatilizer and 0.3-0.5 part of an antioxidant, the invention also provides specific preparation steps and application thereof. According to the invention, oxide + salt bimorphological rare earth and an organic ligand are complexed to form a rare earth organic complex, so that the problem of poor dispersity of inorganic rare earth is solved, and meanwhile, the material is endowed with antibacterial and antistatic functions; through a melt blending-in-situ fiber forming process, the rare earth complex forms gradient distribution in a polypropylene matrix, the surface layer is enriched with antibacterial components, and the inner layer is enhanced in mechanical property, so that a low-cost solution with high strength, antibacterial property and biocompatibility is provided for high-end medical instruments, and the market blank is filled.

The invention belongs to the technical field of flame retardants, and particularly relates to a high-thermal-stability polyphosphate flame retardant and a preparation method thereof. The DOPO is modified through the polyethylene glycol acrylate, methyl methacrylate and dicumyl peroxide composite solution, double bonds of the polyethylene glycol acrylate and P-H bonds of the DOPO can be subjected to nucleophilic addition to form stable C-P bonds, and thermal migration of the DOPO is hindered; dOPO has polymerization double bonds of methyl methacrylate and long carbon chains of polyethylene glycol acrylate, so that the compatibility of the polyphosphate flame retardant and a polymer substrate is improved, and phase separation is avoided; maleic anhydride grafted silicone oil is connected to the surface of an amino modified gamma-cyclodextrin-modified DOPO inclusion compound, so that the polyphosphate flame retardant has high thermal stability and high compatibility after long-chain alkyl modification; amino groups in the modified gamma-cyclodextrin react with maleic anhydride grafted silicone oil to generate an amido bond cross-linked network, so that the thermal migration of DOPO is reduced together, and the high thermal stability of the polyphosphate flame retardant is improved.

The invention relates to the technical field of high polymer materials, in particular to ethylene-vinyl acetate copolymer modified polypropylene high-toughness plastic particles and a preparation process thereof. The composite material is prepared from the following raw materials in parts by weight: 60 to 80 parts of polypropylene, 15 to 30 parts of ethylene-vinyl acetate copolymer, 5 to 10 parts of maleic anhydride-2-ethylhexyl acrylate copolymer grafted ethylene-vinyl acetate copolymer, 3 to 8 parts of nano silicon dioxide / graphene quantum dot composite filler, 5 to 12 parts of polyolefin elastomer, 0.5 to 2 parts of antioxidant and 0.5 to 2 parts of lubricant. The content of vinyl acetate in the ethylene-vinyl acetate copolymer is 20-33 wt%, the composite filler is modified through a silane coupling agent KH-560, the grafting rate of the grafted ethylene-vinyl acetate copolymer is 1.5-3.5 wt%, and the composite filler is prepared through a melt grafting method. Through multi-component collaborative design and process optimization, the low-temperature toughness, rigidity, heat resistance and aging resistance of the material are improved, the problems of rigidity and toughness imbalance, low-temperature brittleness, poor stability and the like of a traditional modification system are solved, and the material is excellent in comprehensive performance and wide in application range.

The invention discloses a high-strength polyethylene film and a preparation method thereof, and relates to the technical field of high polymer materials. The invention discloses a high-strength polyethylene film. The high-density polyethylene composite material is prepared from the following raw materials in parts by weight: 35 to 45 parts of high-density polyethylene, 25 to 35 parts of linear low-density polyethylene, 12 to 18 parts of ethylene-vinyl acetate copolymer, 5 to 10 parts of nano silicon dioxide, 3 to 7 parts of organic montmorillonite, 1.5 to 3.5 parts of hindered amine light stabilizer, 1.5 to 2.5 parts of antioxidant 1010, 0.8 to 1.2 parts of calcium stearate, 0.8 to 1.2 parts of zinc stearate, 0.8 to 1.2 parts of silane coupling agent and 4 to 6 parts of maleic anhydride grafted polyethylene. The composite material is prepared from the following components in parts by weight: 1.5-3.5 parts of a quaternized chitosan-nano silver compound, 6-9 parts of a modified toughening agent, 4-7 parts of a modified heat-resistant agent, 1.5-3.5 parts of a processing aid, 0.15-0.35 part of dibenzoyl peroxide and 0.5-1.5 parts of a nucleating agent DBS. The composite material is excellent in comprehensive performance, high in strength, good in flexibility and puncture resistance, excellent in aging resistance, heat resistance, chemical resistance and antibacterial property, good in processability, capable of meeting the requirements of multiple fields such as packaging and agriculture, scientific in preparation method and high in practical value.

The present invention relates to the technical field of regenerated plastics, and in particular relates to a flame-retardant regenerated plastic and a preparation method therefor. The regenerated plastic comprises the following specific components: 90-100 parts of regenerated high-density polyethylene, 5-10 parts of high-density polyethylene, 1-2 parts of calcium stearate, 1-2 parts of carbon black, 8-12 parts of maleic-anhydride-grafted polyethylene, 2-3 parts of an antioxidant, and 6-8 parts of a polyurethane elastomer. The regenerated high-density polyethylene is used as a main material, the high-density polyethylene is added thereto, the maleic-anhydride-grafted polyethylene is used as a compatibilizer, and then polyhydroxy polybutadiene, epoxidized hydroxyl-terminated polybutadiene and polypropylene oxide glycol are compounded and react with diphenylmethane diisocyanate to generate a polyurethane elastomer, thereby toughening the regenerated polyethylene; moreover, a flame-retardant effect is achieved by means of the synergy of phosphorus and nitrogen; therefore, a regenerated polyethylene plastic with high tensile strength and good flame-retardant performance is prepared. The regenerated plastic can be widely used in a plurality of fields, and has a relatively high level of practicability.

The invention discloses a high-bonding-strength flame-retardant composite current collector base film and a preparation method thereof. The high-bonding-strength flame-retardant composite current collector base film is prepared from the following raw materials in parts by weight: 100 parts of PP resin, 1.5 parts of a lubricant, 0.8 part of an antioxidant and 16 parts of reinforced flame-retardant composite particles, the reinforced flame-retardant composite particles are prepared by the following steps: S1, preparing amidated porous carbon microspheres; s2, compounding the amidated porous carbon microspheres with mica powder to prepare a composite carrier; s3, loading a flame retardant to prepare a flame-retardant compound; s4, in-situ grafting of maleic anhydride grafted polypropylene is carried out, and the reinforced flame-retardant composite particles are obtained. By adding the reinforced flame-retardant composite particles into the PP resin, the flame retardance and mechanical strength of the PP-based composite current collector base film and the interface bonding force between the PP base film and the metal conductive layer can be comprehensively improved.

A biodegradable polymer composite, a method of making the same and use for same are provided. The biodegradable polymer composite has about 30 to 99.5% by weight of a polymer selected from a group consisting of polybutylene adipate terephthalate (PBAT), polybutylene succinate (PBS), polyhydroxyalkanoates (PHA), and polycaprolactone (PCL) grafted with a compatibilizer selected from a group consisting of maleic anhydride, glycidyl methacrylate, pyromellitic anhydride, acrylic acid, polyacrylic acid, methylene diphenyl diisocyanate, poly(glycidyl methacrylate, copolymer(s) of glycidyl methacrylate; and about 0.5 to 50 % by weight a nano-filler or a micro-filler. The biodegradable polymer composite does not contain polylactic acid. Surfaces of the nano-filler or the micro-filler may be modified using a grafting agent so that the biodegradable polymer composite has enhanced mechanical properties, increased heat resistance, compostablity and / or improved processability. The biodegradable polymer composite may be used to make flexible articles, such as a freezer wrap and a farming sheet.

The invention relates to the technical field of cables, and provides a fireproof flame-retardant 10kV power cable and a preparation method thereof. The fire-resistant flame-retardant 10kV power cable comprises a conductor and a fire-resistant flame-retardant layer, the fireproof flame-retardant layer is prepared from the following raw materials in parts by weight: 35 to 45 parts of linear low-density polyethylene, 40 to 50 parts of ethylene-vinyl acetate copolymer, 25 to 30 parts of modified aluminum hydroxide, 5 to 8 parts of polyethylene grafted maleic anhydride, 10 to 12 parts of phosphate modified halloysite nanotube, 5 to 8 parts of ZIF-8 loaded zinc borate core-shell particles, 15 to 20 parts of magnesium hydroxide and 2 to 3 parts of silane coupling agent. 0.5 to 1 part of antioxidant, 0.5 to 1 part of calcium stearate and 1 to 1.5 parts of polyethylene wax. According to the cable prepared in the invention, the situation that a conductor is exposed and the fire resistance is lost due to cracking and falling under long-time high-temperature baking is avoided; the continuous effectiveness of the flame retardant at high temperature is improved.

The present invention provides the application of Lewis acid in preparing ethylene-maleic anhydride alternating copolymer. The present invention introduces a co-catalyst Lewis acid into a copolymerization catalytic system, greatly improves the copolymerization activity of ethylene and maleic anhydride, reduces the polymerization temperature, shortens the polymerization reaction time, significantly reduces ethylene pressure, reduces energy consumption, avoids high-pressure production equipment, improves the safety factor during production operation, and then improves monomer conversion, significantly improves production efficiency. Moreover, the present invention provides a preparation method, which is simple and easy, has mild process conditions, and is more suitable for industrial production and promotion and application.

The invention discloses an anti-shrinkage light, soft and elastic sole foaming material and a preparation method thereof, and belongs to the technical field of footwear products. The light, soft and elastic sole foaming material is formed by chemically foaming an EVA (Ethylene Vinyl Acetate) composite raw material, the EVA composite raw material is prepared from 50 to 70 parts of EVA, 20 to 40 parts of olefin thermoplastic elastomer, 10 to 20 parts of styrene elastomer, 1.5 to 3 parts of maleic anhydride grafted ethylene-octylene copolymer compatilizer, 0.4 to 0.8 part of peroxide cross-linking agent, 3 to 4 parts of foaming agent, 1 to 1.5 parts of zinc oxide, 1 to 1.5 parts of polyethylene wax substance and 0.5 to 1.5 parts of poly (butylene succinate). 0.3 to 1 part of polyamide 12 microspheres and 2 to 3 parts of nano montmorillonite. The foaming material can resist shrinkage when being used as a shoe sole part, and has good rebound performance and the like, so that the high-quality requirement of sneakers, the mass production stability and the like are met.

The invention belongs to the technical field of high polymer materials, and particularly relates to a PVB (Polyvinyl Butyral) film and a preparation method thereof. The PVB film provided by the invention is prepared from the following components in parts by mass: 100 parts of PVB resin, 33 to 36 parts of triethylene glycol di-2-ethylhexoate, 7 to 9 parts of integrated anti-radiation toughening filler, 1 to 2 parts of organic montmorillonite, 0.8 to 1.2 parts of composite coupling agent, 0.5 to 1 part of ultraviolet light absorber, 0.6 to 0.8 part of antioxidant and 0.8 to 1 part of heat stabilizer. The integrated anti-radiation toughening filler adopts a core-shell structure, the anti-radiation core is composed of bismuth oxide and tungsten oxide according to the mass ratio of 3: 1, and the elastic coating layer is maleic anhydride grafted modified POE. The preparation method comprises the steps of pre-dispersion treatment, component mixing, melt extrusion, film casting, graded cooling, two-way stretching and the like. Through the core-shell structure design of the integrated anti-radiation toughening filler and the optimized processing technology, the anti-radiation performance and the toughening performance are synergistically improved, and the prepared film has the advantages of excellent anti-radiation effect, high toughness and good transparency.

The invention belongs to the technical field of sole materials, and particularly discloses an anti-skid sole material and a preparation method thereof. The anti-skid sole material comprises a sole body, the sole body comprises an anti-skid layer and a rubber layer, and the anti-skid layer comprises the following raw material components in parts by weight; comprising 50-55 parts of polyurethane, 16-20 parts of a silicon carbide composite material, 10-14 parts of polyethylene composite fibers, 4-8 parts of a maleic anhydride grafted polyethylene octylene co-elastomer, 3-5 parts of a silane coupling agent, 1-2 parts of an antioxidant and 0.5-0.8 part of a lubricant. The anti-skid sole material prepared in the invention has excellent mechanical strength, skid resistance and wear resistance, and can provide protection for feet and prolong the service life of soles.

The invention relates to the technical field of cable materials, and provides a flexible EVA cable sheath material and a preparation method thereof. The cable sheath material is prepared from the following raw materials in parts by weight: 25 to 50 parts of ethylene-vinyl acetate copolymer EVA, 15 to 30 parts of ultra-low density polyethylene, 2 to 10 parts of grafted EVA, 2 to 10 parts of flame retardant, 2 to 10 parts of polydopamine modified montmorillonite-boron nitride fiber composite material, 0.5 to 3 parts of flexibilizer, 0.2 to 1 part of silicone and 0.2 to 1 part of organopolysiloxane. A grafting monomer for grafting EVA comprises maleic anhydride and / or an acrylate compound; the polydopamine modified montmorillonite-boron nitride fiber composite material is prepared from montmorillonite, boron nitride fibers, hydroxylated lignin, dopamine hydrochloride and polyethyleneimine through a reaction. Various functional raw materials are compounded, and the obtained cable sheath has good flexibility, flame retardance, thermal deformation resistance, aging resistance and mechanical performance.

The invention relates to the technical field of asphalt modifiers, and particularly discloses an asphalt regenerant as well as a preparation method and application thereof. The asphalt modifier comprises an oil phase, a polymer phase, a nano reinforced phase and a functional additive phase, wherein the oil phase comprises petrochemical oil and vegetable oil; the polymer phase comprises four-arm radiation star-shaped SBS and a rubber powder lysis solution; the nano reinforced phase comprises silane coupling agent modified nano montmorillonite and graphene; the functional additive phase comprises maleic anhydride grafted polyethylene and sucrose ester. The asphalt regenerant provided by the invention is suitable for various types of aged asphalt, in particular to aged polymer modified asphalt, each failure phase of the aged polymer modified asphalt is accurately repaired through a multi-phase synergistic mechanism, full-dimension regeneration of the aged polymer modified asphalt from a molecular scale to macroscopic performance is realized, and the asphalt regenerant has a wide application prospect. Excellent applicability and reliability are shown in regeneration of various types of aged asphalt, and a powerful guarantee is provided for high-quality implementation of road engineering.

The invention discloses unsaturated polyester resin for an unmanned aerial vehicle fuselage and a preparation method of the unsaturated polyester resin, and relates to the field of high polymer materials. When the unsaturated polyester resin for the unmanned aerial vehicle fuselage is prepared, a flame-retardant monomer reacts with 2-hydroxy-5-(hydroxymethyl) benzaldehyde to prepare a modified flame-retardant monomer; reacting cellulose with acrylic acid to obtain pre-modified cellulose; the pre-modified cellulose, 1-allyl-1, 1, 3, 3-tetramethyldisiloxane and chloroplatinic acid are subjected to a reaction, and modified cellulose is prepared; maleic anhydride, 5-(1H-imidazole-1-yl)-1, 3-phthalic acid, propylene glycol and the modified flame-retardant monomer are subjected to a reaction, and pre-polyester is prepared; and stirring the pre-polyester, zinc chloride, modified cellulose, benzophenone peroxide and styrene to obtain the anti-aging coating. The prepared unsaturated polyester resin for the unmanned aerial vehicle fuselage has good anti-aging, self-repairing, flame-retardant and self-cleaning performance.

The invention relates to the field of new materials, and discloses a method for preparing a composite material by filling PLA / PBS with fibers, and the composite material comprises the following raw materials by weight: 30-40 parts of polylactic acid, 10-20 parts of poly (butylene succinate), 40-50 parts of fibers, and 1-3 parts of maleic anhydride grafted polylactic acid. Comprising the following steps: S1, performing gradient modification on fibers: S101, pretreating the fibers by using a compound enzyme; s102, in a polylactic acid melt blending stage, adding maleic anhydride to carry out in-situ grafting compatibilization; s2, low-temperature high-shear dispersion: mixing the fibers modified in the step S1 with polylactic acid, poly (butylene succinate) and maleic anhydride grafted polylactic acid. Through a fiber gradient modification technology, bio-enzyme pretreatment and maleic anhydride in-situ grafting compatibilization are utilized, and an interpenetrating network structure of a polylactic acid chain segment is formed on the fiber surface, so that the tensile strength of the composite material is effectively improved to 80-90 MPa.

The invention discloses an interface covalently bonded core-shell structure boron nitride polypropylene composite dielectric material and a method. The interface covalently bonded core-shell structure boron nitride polypropylene composite dielectric material comprises a maleic anhydride grafted polypropylene matrix and a core-shell structure filler dispersed in the maleic anhydride grafted polypropylene matrix, the core-shell structure filler comprises hydroxylated boron nitride nanoparticles covalently grafted on a polymer shell layer on the surface of the core-shell structure filler; the polymer shell layer is polyglycidyl methacrylate; the epoxy group of the polymer shell layer reacts with the anhydride group of the maleic anhydride grafted polypropylene matrix to form a covalent bond. The invention has the characteristics of strong interface bonding force, uniform filler dispersion, and excellent comprehensive electrical properties and processability.

The invention discloses a flame-retardant ABS (Acrylonitrile Butadiene Styrene) composition as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The flame-retardant ABS composition provided by the invention comprises the following components in parts by mass: 50-80 parts of ABS resin; 8 to 12 parts of styrene-acrylonitrile copolymer; 3 to 5 parts of styrene-acrylonitrile-maleic anhydride terpolymer; 2 to 6 parts of a fluorine-containing maleimide copolymer; 5 to 15 parts of graphite nanosheet modified high rubber powder; 12 to 18 parts of brominated flame retardant; 3-7 parts of a phosphorus-based flame retardant; 0.1-1 part of a processing aid; the phosphorus-based flame retardant is prepared from the following components in parts by mass: 80 to 95 parts of diethyl phosphinate; 0.3 to 3 parts of ethyl butyl phosphinate; 0.1 to 2 parts of ethyl phosphonate; and 5 to 20 parts of melamine polyphosphate. The flame-retardant ABS composition prepared by the invention is good in flame retardant property, good in welding strength and low in cost.

The invention discloses sodium ion battery positive electrode slurry, a positive electrode plate and a sodium ion battery. The sodium ion battery positive electrode slurry is prepared from the following materials in percentage by mass: 93-97% of a positive electrode main material; 1%-3% of a binder; 1%-5% of a conductive agent; 0.1%-0.5% of an alkaline regulator; and the positive electrode main material is a mixture of a layered oxide sodium battery positive electrode and a polyanion sodium battery positive electrode. The positive pole piece prepared from the layered oxide and polyanion mixed positive pole material is high in compaction, and the obtained sodium ion battery has excellent first effect, energy density, cycle performance and safety performance. The method is simple to operate, slurry mixing is performed in a low-humidity environment in a manner of neutralizing residual alkali on the surface of the material by adopting maleic anhydride, and the obtained positive electrode slurry is good in viscosity and stability, excellent in dispersion effect and excellent in gel resistance.

The invention discloses a high-performance fluororubber sealing material and a preparation method thereof, and relates to the technical field of fluororubber. The high-performance fluororubber sealing material comprises the following components in parts by weight: 100 parts of raw fluororubber, 20-35 parts of modified fluororubber, 4-8 parts of maleic anhydride grafted ethylene propylene diene monomer, 20-35 parts of a reinforcing agent, 2.5-3.5 parts of a vulcanizing agent and 4-8 parts of an auxiliary agent. Wherein the modified fluororubber is prepared by reacting amino-containing perfluoropolyether, amino-terminated cyclotriphosphazene and epoxy-terminated liquid fluororubber; the reinforcing agent is obtained by uniformly mixing polydopamine coated silicon dioxide and carbon black and then modifying the mixture with (3, 3, 3-trifluoropropyl) methyldimethoxysilane. By combining the modified fluororubber, the maleic anhydride grafted ethylene propylene diene monomer and the reinforcing agent, the processability, the mechanical property, the high temperature resistance and other properties of the fluororubber are effectively enhanced synergistically.

The invention relates to the technical field of cables, and provides a high-temperature-resistant flame-retardant power cable and a preparation method thereof. A high-temperature-resistant flame-retardant power cable comprises a conductor and a high-temperature-resistant flame-retardant outer layer wrapping the conductor. The high-temperature-resistant flame-retardant outer layer is prepared from the following raw materials in parts by weight: linear low-density polyethylene, an ethylene-vinyl acetate copolymer, ethylene propylene diene monomer, chopped polyimide fibers, nano-coated magnesium hydroxide, zinc borate, zinc stannate, polyethylene grafted maleic anhydride, an anti-aging agent, dicumyl peroxide, an antioxidant, polyethylene wax, calcium stearate and cerium dioxide. According to the cable prepared in the invention, the reliability of an existing high-temperature-resistant flame-retardant power cable under thermal cycle is improved, and the problem of local temperature resistance difference caused by agglomeration and high-temperature migration of nanoparticles in a polymer matrix is improved.

The invention relates to the technical field of flame-retardant materials, in particular to a halogen-free flame-retardant glass fiber modified polypropylene material and a preparation method thereof. The material comprises the following components in parts by mass: 60-80 parts of polypropylene, 15-30 parts of long glass fiber, 8-15 parts of a halogen-free intumescent flame retardant, 2-5 parts of a synergist, 3-8 parts of a compatilizer, 2-3 parts of an interface modifier, 2-4 parts of a dynamic cross-linking agent and 1-3 parts of a functional additive. According to the halogen-free flame-retardant glass fiber modified polypropylene material and the preparation method thereof, an intumescent halogen-free flame retardant melamine polyphosphate is compounded with organic montmorillonite, nano zinc borate and MXene, so that the flame-retardant efficiency is improved through a synergistic effect, and the release of smoke and toxic gas in a combustion process is inhibited; the halogen-free flame-retardant glass fiber modified polypropylene material has a good flame-retardant effect by introducing the halogen-free flame-retardant glass fiber, and maleic anhydride grafted polypropylene is introduced as a compatilizer to modify the surface of the long glass fiber and enhance the interface bonding force between the long glass fiber and a matrix.

The invention relates to the technical field of chinlon industrial yarns, and discloses a preparation method of a high-strength and high-toughness chinlon industrial yarn, which comprises the following steps: (1) preparing raw materials; (2) mixing the materials; (3) melt spinning; (4) stretching and heat treatment; (5) fiber surface modification; according to the invention, by fusing the advantages of high crystallization speed of nylon 6 and high melting point and high strength of nylon 66, a matrix material with good processing fluidity is formed, and the strength and fatigue cycle resistance of the chinlon industrial fiber are obviously improved. By introducing the maleic anhydride grafting agent, polar groups can be introduced among molecular chains through grafting reaction, so that the hydrogen bond density and crystallinity are remarkably improved, the molecular chains are arranged more regularly, and the tensile strength and heat resistance of the material are improved. The sea-island structure of the polyether ester elastomer effectively absorbs impact energy, so that the elongation at break is greater than or equal to 28%; the nano silicon dioxide inhibits crack propagation, and the service life of the material is remarkably prolonged.

The invention discloses a high-toughness flame-retardant polyurethane cable insulation layer material and a preparation method and application thereof.According to the preparation method, firstly, a phosphorus-containing compound is grafted to polyhydric alcohol, molecular-level uniform dispersion of flame-retardant elements is achieved, and meanwhile the problems that a traditional additive type flame retardant is prone to migration and precipitation and deteriorates the mechanical property of polyurethane are solved; then polymerizing with a diisocyanate monomer and a chain extender, and then extruding and granulating with an antioxidant, a layered nano filler and a maleic anhydride grafted toughening agent through a double-screw extruder to obtain the polyurethane elastomer. The prepared polyurethane cable insulation layer material has the advantages of no halogen, environmental protection, high flexibility, excellent flame retardant property and the like. Besides, the strong polarity of the maleic anhydride grafted flexibilizer and the twin-screw extrusion process can promote the uniform dispersion of the layered nanofiller, so that not only are the flexibility and impact resistance of the material improved, but also the flame-retardant effect is further enhanced through the synergistic effect of the nanofiller, and the material has a wide application prospect in the field of wires and cables.

The invention relates to the technical field of high polymer materials, in particular to a resin composite material with flame-retardant and insulating properties and a preparation method thereof. The problems that in the prior art, a resin composite material is poor in flame retardance and insufficient in insulating property are solved. The preparation method comprises the following steps: modifying epoxy resin with maleic anhydride and carboxyl modified nitrile rubber to obtain modified epoxy resin; a modified flame-retardant system is obtained by processing the carbon nanotube loaded melamine polyphosphate, the triphenyl phosphate and the magnesium hydroxide; the preparation method comprises the following steps: mixing modified epoxy resin and a modified flame-retardant system, adding modified nano silicon dioxide through a supercritical fluid technology and ultrasonic dispersion, and performing staged curing through a curing agent to obtain a resin composite material; the flame retardant property of the composite material is improved through the synergistic effect of the flame retardant and loading of the carbon nanotubes; and through the synergistic effect of the modified nano silicon dioxide and the carbon nanotubes, the insulating property of the composite material is improved.

The invention discloses a high-weatherability sound insulation wood plastic wallboard and a preparation method thereof, the high-weatherability sound insulation wood plastic wallboard comprises the following raw materials by weight: 30-40 parts of wood flour or plant fiber, 25-35 parts of a sound insulation functional filler, 35-45 parts of high density polyethylene, 2-2.5 parts of maleic anhydride grafted high density polyethylene, 1-1.5 parts of stearic acid, 3-4.5 parts of a weatherability auxiliary agent, and 1-1.5 parts of azodicarbonamide. The problems of cracking, deformation and the like caused by moisture absorption expansion are relieved by optimizing the proportion and compatibility of the wood flour and the plastic, and then the problems of weather resistance and sound insulation of the wallboard outdoors are solved by filling the porous sound absorption material.

The invention relates to a safety early warning method and system for continuous production of hydrolytic polymaleic anhydride, and the method comprises the steps: L1, in the continuous production process of hydrolytic polymaleic anhydride, obtaining the data information of the temperature of a reaction kettle in real time based on a temperature sensor on the reaction kettle, data information of pressure of the reaction kettle is acquired in real time based on a pressure sensor on the reaction kettle, data information of rotating speed of a stirrer in the reaction kettle is acquired in real time based on a tachometer on the reaction kettle, and data of temperature and pressure of the reaction kettle and data of the rotating speed of the stirrer are fused by adopting an improved multi-modal model level fusion algorithm. And constructing a combined characteristic matrix of the reaction kettle. According to the invention, the operation state of the reaction kettle can be accurately predicted in advance, and safety early warning is carried out, so that the quality of the product is ensured to meet the standard, the whole monitoring process does not need manual participation, the manual error is reduced, and the production efficiency of hydrolytic polymaleic anhydride is improved.

The invention belongs to the technical field of 3PE corrosion prevention, and particularly relates to a high-temperature-resistant and cathodic disbonding-resistant 3PE corrosion-resistant pipeline and a preparation method thereof. A pipeline epoxy bottom layer, a middle adhesive layer and a polyethylene surface layer are subjected to systematic chemical synergistic modification, specifically, the epoxy bottom layer is modified with phenolic resin and amino silane, and a heat-resistant compact barrier is formed; the middle layer reacts with maleic anhydride grafted polyethylene through amino silane to construct a chemical bridge for simultaneously connecting the upper layer and the lower layer; the surface layer is grafted with high-density polyethylene through fluoroprimary amine modified glycidyl methacrylate, and a hydrophobic and oleophobic chain and a reactive functional group are introduced; according to the structure, through the synergistic effect of the high-temperature stability of the bottom layer, the two-way chemical bridging capacity of the middle layer and the inert hydrophobic characteristic of the surface layer, the long-term use temperature upper limit, the stripping resistance and the medium infiltration resistance of the pipeline are improved, and a solution is provided for long-term protection of the pipeline in the severe environment.

The present invention provides an electrolyte-resistant hot melt tape, which comprises a PET substrate and a rubber hot melt adhesive layer coated on its surface. The rubber hot melt adhesive layer comprises the following components in parts by weight: 60-160 parts of styrene-butadiene rubber, 10-40 parts of maleic anhydride-modified polyolefin, 1-5 parts of epoxy curing agent, 10-40 parts of hydroxyl-terminated liquid polybutadiene, 1-5 parts of polyisocyanate curing agent, and 20-60 parts of rosin tackifying resin. The rubber hot melt adhesive layer of the electrolyte-resistant hot melt tape is tightly compounded with the polar PET substrate. At the same time, the moderate cross-linking between the components of the rubber hot melt adhesive layer can reduce the infiltration of the electrolyte, so that the electrolyte-resistant hot melt tape has excellent bonding strength before and after being immersed in the electrolyte, does not bubble or delaminate, improves the passing rate of the battery drop test, meets the requirements of the lithium battery industry for tape products, and improves the battery safety factor.