72results about How to "Permanent Flame Retardancy" patented technology

The invention provides a high-strength stretch-proof flame-retardant textile. The flame-retardant textile is formed by weaving a flame-retardant composite yarn, wherein the flame-retardant composite yarn is formed by compounding a core yarn and a leather yarn and is one of a covering yarn and a fasciated yarn; the core yarn adopts a flame-retardant filament yarn as a raw material; the leather yarn adopts a flame-retardant short fiber as a raw material; and the weight ratio of the flame-retardant filament yarn to the flame-retardant short fiber is 30-90:10-70. Compared with the conventional flame-retardant textile, the high-strength stretch-proof flame-retardant textile has higher strength and overcomes the defects of difficult weaving, difficult dyeing and uncomfortableness of the high-strength fiber; the high-strength stretch-proof flame-retardant textile has permanent flame retardance which cannot decrease after the textile is washed, and better textile strength; the textile has soft and comfortable handfeel, rich color and good strength, meets the requirements of various flame-retardant clothes and related standards; the product has rich and varied appearances and is durable; and the combustion performance of the textile can meet the national standards of flame-retardant products.

The invention provides a preparation method of nylon resin, which comprises the following steps of mixing a polymer monomer, a catalyst, a reaction type flame retardant and a charring agent, and performing a condensation polymerization reaction to obtain the nylon resin, wherein the polymer monomer is one or more of compounds containing amino and carboxyl and lactam, or the polymer monomer is diacid and diamine; the reaction type flame retardant is one or more of the compounds with the structures of formulas (I)-(IV). According to method provided by the invention, the reaction type flame retardant is a phosphorus-containing flame retardant; after being copolymerized with a monomer, the reaction type flame retardant is stably stored in the polymer without being transferred or lost and has a permanent flame retardant property. Moreover, the reaction type flame retardant is polymerized in a polymer, causes little influence on the viscosity of the nylon resin and has excellent mechanical properties.

The invention discloses double-layer flame-retardant fabric with a water-repellent surface layer and a hydrophil inner layer, and a preparation technology thereof. The double-layer flame-retardant fabric comprises the surface layer and the inner layer, wherein the surface layer is composed of at least one of aramid fibers, polyimide fibers, polysulfonamide fibers, flame-retardant viscose and ; the inner layer is formed by mixing flame-retardant modacrylic fibers with chloride, Tencel fibers and partner fibers, and the partner fiber is one selected from flame-retardant nylon fibers, aramid fibers and polysulfonamide fibers; water-repellency of the surface layer is implemented by the technology comprising the steps of preparing three proofing auxiliary size, soaking surface layer yarn into the three proofing auxiliary size, drying with high temperature, weaving and hot rolling with rollers; and water absorption of the inner layer is implemented by the technology comprising the steps of preparing hydrophil and sweat-releasing auxiliary size, soaking inner layer yarn into the size, drying, weaving and decating. The double-layer flame-retardant fabric with the water-repellent surface layer and the hydrophil inner layer has the characteristics of being soft, comfortable, air and moisture permeable and skin-friendly, has multifunctional protection performance, and meanwhile is high in comfort, so as to be applicable to special protection clothing in industries of firefighting, military police, electric power and smelting.

The invention discloses a three-layer co-extrusion PVC-M tubular product for coal mine, characterized in that the tubular product comprises an antistatic inner layer, an antistatic outer layer and a PVC-M interlayer, wherein the antistatic inner and outer layer compositions comprise the following ingredients: 100 weight parts of PVC resin, 0.8-1.2 weight parts of heat stabilizer, 4-8 weight parts of toughening agent, 1.3-2.0 weight parts of lubricating agent, 5-10 weight parts of flow modifier, and 6 weight parts of nano conductive carbon black; the PVC-M interlayer composition comprises the following ingredients: 100 weight parts of PVC resin, 1.0-1.5 weight parts of heat stabilizer, 10-15 weight parts of toughening agent, 2.1-3.5 weight parts of lubricating agent, and 0-5 weight parts of filling agent. According to the invention, the composition of the tubular product has high strength, the shock resistance of the tubular product can be comparable to that of polyethylene antistatic tubular products for coal mine, the modulus reaches to 2231MPa, the tensile strength reaches to 46.3Mpa, the impact strength of the simple-supported beam reaches to 97.6Mpa, the mechanical property shows toughness and balance and permanent antistatic property, thus the requirements of the tubular product for coal mine are satisfied.

The invention relates to flame-retardant yarn made of polyphenylene sulfide fibers and blended fibers based on aromatic polyamide and Astrel 360, fabric and garments made of the yarn, and production method of the yarn, the fabric and the garments. The yarn comprises the polyphenylene sulfide fibers (A) and blended fibers (B) based on aromatic polyamide and Astrel 360. The blended fibers comprises 40-98wt% of aromatic polyamide and 2-60wt% of Astrel 360, and the aromatic polyamide and the Astrel 360 are blended. The yarn is excellent in high temperature resistance and chemical resistance and widely applicable to high-temperature work environments with chemical corrosion.

The invention discloses a fire-resistant fiber fabric and a preparation method thereof. The fabric comprises broken filaments, central filaments and base filaments; the mass ratio of the broken filaments to the fabric is 50-80%, and the mass ratio of the central filaments and the base filaments to the fabric is 20-50%, wherein the broken filaments adopt polyester fibers of 120-150 D, the central filaments and the base filaments adopt fire-resistant fibers, and the fabric is woven by utilizing a two-needle-bar 288/292 warp knitting machine. According to the fire-resistant fiber fabric and the preparation method thereof, the fabric adopts the fire-resistant fibers and the polyester fibers, is woven by utilizing five guide bars, and has the permanent fire resistance, reduction of the fire resistance caused by the times of washing does not occur, and the fabric also has the characteristic of soft hand feeling.

The invention relates to copolymerized flame-retardant polyamide and a preparation method thereof. The preparation method comprises the following steps: mixing a flame retardant salt with a polyamide6 oligomer and/or a polyamide 66 oligomer, and carrying out condensation polymerization to obtain copolymerized flame-retardant polyamide. The flame retardant salt is prepared from a DOPO derivative and diamine NH2R2NH2 through a high-temperature and high-pressure reaction. The temperature of the high temperature is 200-250 DEG C, and the pressure of the high pressure is 1.2-1.8 MPa. The structural formula of the finally obtained copolymerized flame-retardant polyamide is as follows. In the structural formula, x is the polymerization degree of the polyamide 6 oligomer, y is the polymerizationdegree of the polyamide 66 oligomer, and the structural formula of Rz is as follows. The preparation method disclosed by the invention is simple to operate, and the prepared product has excellent flame retardance, good impact resistance and processability.

The invention relates to a copolymerized flame-retardant polyamide fiber and a preparation method thereof. The preparation method comprises the following steps of spinning by taking a flame-retardantpolyamide copolymer as all or parts of spinning raw materials to obtain the copolymerized flame-retardant polyamide fibers, wherein the flame-retardant polyamide copolymer is prepared by mixing a flame retardant salt with a polyamide 6 oligomer and/or a polyamide 66 oligomer and then carrying out a condensation polymerization reaction, the flame retardant salt is prepared from a DOPO derivative and diamine NH2R2NH2 through a high-temperature and high-pressure reaction, the temperature of the high temperature is 200-250 DEG C, the pressure of the high pressure is 1.2-1.8 MPa, and the main material of the finally prepared copolymerized flame-retardant polyamide fiber is the flame-retardant polyamide copolymer. The preparation method disclosed by the invention is simple to operate, the flame-retardant polyamide copolymer is excellent in flame retardance and good in spinnability, and the prepared copolymerized flame-retardant polyamide fiber is a functional fiber with flame retardance andcan better meet the requirements of the fields of medical treatment and public health, professional clothing, clothing home textiles and the like in modern life of the flame-retardant polyamide fiber.

The invention provides a permanent flame retardant anti-static light color fabric and a preparation method thereof. The fabric is prepared from, by mass, 97%-99% of raw materials and 1%-3% of electrically conductive filament; the raw materials comprise aramid fiber 1313 fiber accounting for 70%-80% by mass of the raw materials, aramid fiber 1414 fiber accounting for 5%-10% by mass of the raw materials and flame retardant polyester fiber accounting for 10%-20% by mass of the raw materials. Accordingly, the excellent anti-static property and permanent flame retardant property of the fabric are achieved, the appearance is improved, and wearing is comfortable.

The invention discloses flame retardant fabric which is interwoven by warps and wefts according to a certain pattern. The warps are perpendicular to the wefts. The warps are made of cotton yarn. The wefts are made of flame retardant polyester filament yarn. The flame retardant fabric is soft, comfortable and breathable, and has permanent flame retardancy and no pungent smell.

The invention discloses insulation aramid fiber felt with high-temperature resistance and a preparation method of the insulation aramid fiber felt. The insulation aramid fiber felt with high-temperature resistance comprises at last two layers of aramid fiber 1313 non-woven fabric prepared from aramid fibers 1313, every two adjacent layers of the aramid fiber 1313 non-woven fabric are subjected to spunlace composition, and the linear density of the aramid fibers 1313 is 2D or 1.5D. Compared with the prior art, the insulation aramid fiber felt with high-temperature resistance has permanent flame retardance and is good in safety, physical and mechanical property and insulativity and aging-resistant.

The present invention discloses one kind of flame retardant polyacrylic and polyester fiber and its production process. The production process includes adding antimony pentoxide colloid solution and dimethyl formamide water solution into the polymerized solution, filtering and spinning to produce flame retardant polyacrylic and polyester fiber containing flame retardant antimony pentoxide. By means of the synergistic flame retarding effect of antimony and chlorine, the present invention has greatly raised flame retardant performance, limiting oxygen index up to 30-34 % and excellent comprehensive performance. The present invention may find its wide application in different fields, especially in flame retardant fabric.

The invention relates to copolymerized flame-retardant polyamide and a preparation method thereof. The preparation method comprises the following steps: mixing a flame retardant salt with a polyamide66 oligomer and/or a polyamide 6 oligomer, and carrying out condensation polymerization to obtain copolymerized flame-retardant polyamide; wherein the flame retardant salt is prepared from N, Ndi (6aminohexyl) phenyl phosphoramide and binary acid HOOCR1COOH through a high-temperature and high-pressure reaction; wherein the temperature of the high temperature is 210-220 DEG C, and the pressure of the high pressure is 1.7-1.9 MPa; wherein in the structural formula, x is the polymerization degree of the polyamide 66 oligomer, y is the polymerization degree of the polyamide 6 oligomer, and the structural formula of Rz1 is as follows: the structural formula of Rz2 is as follows: the preparation method disclosed by the invention is simple to operate, and the prepared product has excellent flameretardance, good impact resistance and processability.

The invention relates to flame-retardant and antibacterial polyester fiber for mattress filling and a manufacturing method of the fiber, and belongs to the technical field of polyester fiber fillers. The manufacturing method of the flame-retardant and antibacterial polyester fiber for mattress filling comprises the steps of step I, raw material treatment; step II, PET resin modification; step III, polyester fiber modification; step IV, loosening. According to the flame-retardant and antibacterial polyester fiber for mattress filling and the manufacturing method of the fiber, blending modification of nano-montmorillonite, nano silica micro powder, HAPCP and PET resin is adopted, the polyester fiber with permanent flame retardant performance is prepared, and then the polyester fiber is endowed with excellent antibacterial property and comfort through immersion treatment of treating fluid. Besides, the flame-retardant and antibacterial polyester fiber for mattress filling has excellent heat retention property, mildew resistance and antibacterial activity, and at the same time, the mechanical property of the polyester fiber is improved greatly.

The invention relates to flame-retardant yarn made of polyphenylene sulfide fibers and aromatic polymer fibers containing sulphone, fabric and garments made of the yarn, and a production method of the yarn, the fabric and the garments. The yarn comprises the polyphenylene sulfide fibers (B) and the aromatic polymer fibers (A) containing sulphone. The aromatic polymer fibers (A) containing sulphone is made of aromatic polymer containing sulphone. The aromatic polymer containing sulphone is polymerized by meta-position aromatic monomer (a) containing diamino, monomer (b) containing sulphone and amino and para-position aromatic monomer (c) containing dicarboxylic acid groups or yl halide (c) of the para-position aromatic monomer. The sulphone accounts for 4-10% in the aromatic polymer. The yarn is good in high temperature resistance and chemical resistance and widely applicable to high-temperature work environments with chemical corrosion.

An environment-friendly and flame-proof nylon 66 with high conductivity and a preparation method thereof. The environment-friendly and flame-proof nylon 66 with high conductivity is prepared by carrying out high-speed mixing on a nylon 66 resin, carbon fiber filament, a phosphorus nitrogen flame retardant, a coupling agents, an antioxidant and processing agent according to a proportion, and sending the mixture into an extruder for extrusion. The nylon 66 invention obtained by the invention has obviously improved mechanical properties as well as good flame retardance and permanent antistatic performance.