14results about How to "Reduce burn rate" patented technology

The invention discloses a preparation method of a flame-retardant anti-aging polyolefin plastic, and belongs to the technical field of polyolefin material processing.The preparation method comprises the steps that a modified anti-aging agent is mixed with a DOPO-based flame retardant modified by introducing isocyanate and epoxy groups, the mixture is added into a polyolefin material, during combustion, carbon formation is promoted by the phosphorus element, and the flame-retardant anti-aging polyolefin plastic is obtained. The flame retardant and nitrogen element synergistically play a flame-retardant role, meanwhile, epoxy groups in the flame retardant and carboxyl of polypropylene are subjected to a ring-opening reaction, the crosslinking degree of the material is enhanced, the modified anti-aging agent can effectively capture free radicals and inhibit oxidative degradation, and the mechanical strength and flame-retardant effect of the material are improved. According to the modification method, the anti-aging, high-temperature-resistant and flame-retardant properties of the polyolefin plastic are remarkably improved, the stability of the polyolefin plastic in high-temperature and severe environments is enhanced, the service life is prolonged, and the mechanical property and the thermal stability of the polyolefin plastic are improved.

The invention relates to the field of polyolefin plastics, in particular to a glass fiber reinforced modified polyolefin plastic and a preparation method thereof, which are used for solving the problem that the application of the existing glass fiber reinforced modified polyolefin plastic in some high-performance fields is limited due to poor mechanical strength and flame-retardant and fireproof performance of the existing glass fiber reinforced modified polyolefin plastic. According to the preparation method, the organic phosphorus-nitrogen modified glass fiber is added into the polyolefin resin to serve as a reinforcing agent, so that the polyolefin plastic not only is obviously improved in mechanical property, but also can keep relatively good performance in a high-temperature environment, and the flame retardant property and the fireproof grade are obviously improved; and the fireproof door can meet the fireproof standard with higher requirements. Meanwhile, according to the preparation method, a reasonable production process and technical means are adopted, and good combination of the glass fiber and the polyolefin material is ensured, so that comprehensive optimization of the plastic performance is realized, the performance and the application range of the polyolefin plastic are remarkably improved, and the requirement of high-performance application under various complex environmental conditions is met.

The invention relates to a flame-retardant rubber and plastic thermal insulation material and a preparation method thereof, and belongs to the technical field of high polymer materials. The flame-retardant rubber-plastic thermal insulation material comprises the following components in parts by weight: 50-75 parts of nitrile rubber, 20-45 parts of PVC resin, 10-15 parts of a plasticizer, 1-10 parts of a foaming agent, 1-5 parts of a foaming promoter, 10-40 parts of a composite flame retardant and 2-6 parts of a modified anti-aging agent, cyclohexanehexol phosphate in the composite flame retardant is heated and dehydrated into phosphoric acid, a barrier layer is formed to inhibit release of combustible materials, and dimethylallylamine combusts to absorb heat and cooperates with phosphorus-oxygen double bonds for flame retardance; a pre-product in the modified anti-aging agent reacts with a free radical of a rubber molecular chain, so that the heat resistance and the aging resistance of the material are improved, a maleimide group enhances an intermolecular acting force, the rigidity and the heat resistance of the molecular chain are improved, and material aging caused by high temperature is reduced; the flame-retardant rubber and plastic thermal insulation material prepared by the invention not only has an excellent anti-aging effect, but also has good flame retardance.

The invention discloses a preparation method of a cement-based artificial lawn blanket, and belongs to the technical field of greening engineering. According to the preparation method, the cement-based artificial lawn blanket comprises three-dimensional mesh cloth, simulated green plants, a cement-based composite material and a packaging layer; the simulated green plant comprises a green leaf part and a grass root part; the preparation method comprises the following steps: S01, preparing the three-dimensional mesh cloth; s02, preparing simulated green plants from low-density polyethylene flame retardant resin, and arranging the simulated green plants in the three-dimensional mesh cloth; s03, pouring a cement-based composite material into the three-dimensional mesh cloth; s04, spraying a packaging layer on the bottom of the three-dimensional mesh cloth; wherein in the step S02, linear low-density polyethylene is used as a matrix for preparing the low-density polyethylene flame retardant resin, and the low-density polyethylene flame retardant resin comprises a composite flame-retardant material composed of an electrodeless flame-retardant material and an organic flame-retardant material. According to the cement-based artificial lawn carpet obtained through the preparation method of the cement-based artificial lawn carpet, simulated green plants are good in flame retardance, and the outdoor color is stable.

The present invention discloses a high-toughness, flame-retardant non-woven fabric and a preparation method thereof, and belongs to the technical field of non-woven fabric preparation. The present invention is used to solve the technical problem that the preparation process of non-woven fabric materials in the prior art is complicated, and the toughness and flame-retardant properties of non-woven fabrics need to be further improved. A high-toughness, flame-retardant non-woven fabric is obtained by alternately stacking polyurethane spinning membranes and composite polyester spinning membranes to obtain a multilayer spinning membrane with upper and lower surface layers being polyurethane spinning membranes, and then steam hot rolling the multilayer spinning membranes. The present invention synthesizes a composite polyurethane having polyethylene glycol and polysiloxane segments, and then modifies it to prepare a polyurethane fiber membrane, and then stacks it layer by layer with a composite polyester spinning membrane composed of modified polysiloxane and polyethylene terephthalate to prepare a composite non-woven fabric, which not only effectively simplifies the preparation process of the non-woven fabric, but also improves the breaking strength, tensile properties and flame-retardant properties of the non-woven fabric material.

The invention relates to the technical field of water-borne epoxy resin coating preparation, in particular to a multifunctional water-borne epoxy resin coating containing modified fly ash and a preparation method thereof.The preparation method comprises the steps that 2-5 parts of fly ash is dispersed into 100-500 parts of absolute ethyl alcohol, 10-50 parts of deionized water is added, then 3-10 parts of silane coupling agent is added, the temperature is increased to 50-80 DEG C, a reflux reaction is conducted for 2-8 hours, after the reaction is completed, the temperature is reduced to the room temperature, and the modified fly ash-containing multifunctional water-borne epoxy resin coating is obtained; centrifugally washing with deionized water to obtain functionalized fly ash; 2, dispersing the functionalized fly ash obtained in the step 1 into 2.5-10 parts of deionized water, mixing with 3.75-15 parts of a water-borne epoxy resin curing agent, and stirring to prepare a component B of the water-borne epoxy resin coating; 3-12 parts of bisphenol A type epoxy resin is used as a component A of the water type epoxy resin coating; when in use, the component A and the component B are uniformly stirred and mixed and then are scraped to form a film. The curing effect of a water-borne epoxy resin system is greatly improved, so that the water-borne epoxy resin coating with excellent performance is obtained.

The invention provides a high-performance olefin polymer-based composite material, and belongs to the technical field of high polymer materials. The preparation process comprises the following steps: preparing the antistatic flame-retardant composite filler; preparing a phase change microcapsule; preparation of a PDMA-SH homopolymer; preparing high-temperature-resistant nano powder; preparing a high and low temperature resistant composite coating; and preparing the polypropylene-based battery shell material. By adding the antistatic flame-retardant composite filler into polypropylene, the antistatic performance of the polypropylene material can be remarkably improved, and the antistatic flame-retardant composite filler can form a conductive network in the polypropylene material, so that the surface resistance is effectively reduced, electrostatic accumulation is reduced, and potential safety hazards caused by static electricity are prevented; the antistatic flame-retardant composite filler can improve the flame retardant property of polypropylene, and the nano antimony-doped tin oxide and other components can release flame-retardant gas at high temperature to form a protective layer, prevent flame spread and reduce the combustion rate, thereby improving the safety of the material.

The present invention relates to the field of polyolefin plastics, and specifically to a glass fiber reinforced modified polyolefin plastic and a preparation method thereof, which is used to solve the problem that the existing glass fiber reinforced modified polyolefin plastic has poor mechanical strength and flame retardant and fireproof performance, which limits its application in some high-performance fields; the preparation method adds organic phosphorus nitrogen modified glass fiber as a reinforcing agent to the polyolefin resin, so that the polyolefin plastic not only has a significant improvement in mechanical properties, but also can maintain good performance under high temperature environment, and the flame retardant performance and fireproof grade are significantly improved, so that it can meet higher fireproof standards. At the same time, the preparation method adopts reasonable production process and technical means to ensure the good combination of glass fiber and polyolefin materials, thereby realizing the comprehensive optimization of plastic performance, significantly improving the performance and application range of polyolefin plastics, and meeting the needs of high-performance applications under various complex environmental conditions.

The invention belongs to the technical field of adhesives, and discloses a flame-retardant organic silicon adhesive as well as a preparation method and application thereof. According to the adhesive, 4, 4 '-(propane-2, 2-diyl) bis (2-(pent-4-ene-1-yl) cyclopentane-1-formic acid) is used as a starting raw material, and esterification, siloxane ester exchange, polymerization and other reactions are carried out, so that the organic silicon flame-retardant adhesive with good thermal stability, flame retardance and safety is obtained. The flame-retardant organic silicon adhesive prepared by the invention has a wide market prospect in manufacturing of fireproof building materials, fireproof clothes, fireproof containers, automobiles and electronic products.

This invention relates to the field of polymer materials technology, specifically to a toughened halogen-free heat-resistant polyolefin elastomer material and its preparation method. The invention involves mixing ethylene-vinyl acetate copolymer, polyolefin elastomer, polyethylene, compatibilizer, halogen-free flame retardant, flame retardant synergist, antioxidant, and lubricant in a mixer for 10-15 minutes to obtain a mixture. This mixture is then extruded and granulated using a twin-screw extruder and dried to obtain a toughened halogen-free heat-resistant polyolefin elastomer material. This material not only possesses excellent mechanical and flame-retardant properties but also exhibits good heat resistance, allowing it to maintain its mechanical properties even at high temperatures, making it suitable for a wider range of applications.

This invention discloses a reinforced and toughened composite polyethylene material for plastic pipe processing and its preparation method, belonging to the field of polyethylene material processing technology. The invention comprises the following components by weight: 90-100 parts low-density polyethylene, 8-12 parts glycidyl methacrylate, 5-6 parts flame retardant, 15-22 parts composite filler, 20-30 parts reinforcing elastomer, 0.5-0.8 parts initiator, and 3-5 parts auxiliary additives. By reinforcing the low-density polyethylene matrix with a strong elastomer, composite filler, flame retardant, and glycidyl methacrylate, the tensile properties and impact toughness of the composite polyethylene material are effectively improved, as are its flame retardant properties and aging resistance.

The present invention provides a low-odor and aging-resistant flame-retardant recycled polypropylene material and a preparation method thereof, wherein the flame-retardant recycled polypropylene material comprises the following components: recycled polypropylene resin, composite adsorbent, modified Al-MOFs, auxiliary antioxidant, lubricant and optional filling material. The present invention utilizes Al-MOFs material to modify the main antioxidant, so that the antioxidant is stably and evenly dispersed in the recycled material, and is not easy to migrate to the surface of the material and cause loss, so that the recycled material has the ability of aging resistance and low odor at the same time; by adding fly ash to graft and modify carbon nanotubes, the specific surface area and adsorption points of fly ash are increased, the dispersion of carbon nanotubes is effectively improved, and while taking into account the odor and aging resistance, the horizontal combustion rate of the composite material is effectively reduced, and the comprehensive performance is excellent.

The invention relates to the technical field of electric wires and cables, in particular to a fire-resistant shipboard cable, comprising a cable core, an outer fire-resistant layer, a shielding layer and an outer sheath layer, wherein the cable core consists of a conductor, an inner fire-resistant layer and an inner sheath layer; the outer fire-resistant layer and the inner fire-resistant layer are made of the same material, and the outer fire-resistant layer and the inner fire-resistant layer are made of the same material, and the outer fire-resistant layer and the inner fire-resistant layer are made of the following components in parts by weight: 100-120 parts of polyvinyl chloride resin, 25-35 parts of ABS resin, 5-15 parts of polyionic liquid-containing block copolymer, 40-60 parts of carbon black, 20-30 parts of nano magnesium aluminum hydrotalcite, 5-10 parts of nano boron oxide, 5-10 parts of nano zinc oxide, 1-2 parts of a plasticizer and 1-2 parts of a silane coupling agent. The fire-resistant shipboard cable prepared by the invention can still maintain normal power supply after burning in a flame of 950-1000°C for 90 minutes, exhibits extremely high fire resistance and reaches Class A standards.

The invention discloses a novel B1-level NW-type polypropylene insulating environment-friendly low-voltage power cable, which belongs to the technical field of wires and cables and comprises conductors, a plurality of conductors are mutually twisted, a protective layer is arranged on the outer side of each conductor, a protective layer is arranged on the outer side of the twisted conductors, and a filling layer is arranged in a gap between the protective layer and the protective layer. The outer side of the protection layer is provided with an oxygen isolation layer, and the outer side of the oxygen isolation layer is provided with a sheath layer. The protective layer comprises a fireproof layer, a nylon layer and an insulating layer from inside to outside, the protective layer comprises two layers of glass fiber tapes, and a ceramic silica gel tape is arranged between the glass fiber tapes. According to the invention, the protection layer can bear high temperature and does not change the shape in a certain time, so that stable forms of the fireproof layer, the nylon layer and the insulating layer which are arranged on the outer side of the conductor are ensured, and the situation that in the combustion process of the cable, drippings in a molten state fall to other places, other inflammables are ignited, and a secondary fire is caused is avoided.