59 results about "Flame test" patented technology

A resin composition comprising 100 parts by mass of lactic acid resin (A), 50 to 100 parts by mass of metal hydroxide (B) and 0.1 to 30 parts by mass of fiber (C), wherein the fiber (C) is a natural fiber or / and a fiber derived from natural material. Moldings thereof satisfy the V-0 standard or VTM-0 standard according to UL94 vertical flame test (UL94V, UL94VTM).

The invention relates to the use of a flame resistant three-layer double-knit or woven fabric, also know as a matelasse fabric. The top layer is of standard non-flame resistant face yarn, the middle layer is of flame resistant filler yarn and the bottom layer is of flame resistant core wrap spun yarn. This flame resistant matelasse fabric can be used to protect a mattress, foundation, mattress pad, pillow, comforter, upholstery cushion, pillow, office panel, transportation seat or any other article requiring flame resistant protection. In this invention, a matelasse fabric is formed by circular double knitting or weaving a flame resistant core spun yarn into the bottom portion of the fabric, utilizing a heavy cotton count flame resistant filler yarns for the middle layer and using conventional non-flame resistant yarns for the top layer. The invention has particular applicability in the formation of flame resistant mattresses and foundations that require passage of large open flame tests such as CPSC's 16 CFR part 1633, California's Test Bulletin 603 and Test Bulletin 129 and in the formation of flame resistant upholstered furniture that requires passage of California's Test Bulletin 133 or British Standard 5852 using the crib 5 ignition source or higher.

The invention provides plastics for low smoke halogen-free highly fire-retardant wire cables. The raw material formula of the plastics in weight portion is as follows: 50 to 75 portions of polyolefine, 25 to 50 portions of maleic anhydride grafting olefinic copolymer and 60 to 70 portions of humidity resistance phosphorus-nitrogen system expanding type fire retardant material. In the invention, the fire retardant performance, the mechanical and physical performance and the product hardness are comprehensively considered in the whole formula, the tensile strength is more than and equal to 13.8MPa and the extension rate is more than and equal to 300 percent; when the plastics is used for the production of the wire cables, the wire cables can pass the VW-1 vertical wire flame test, and after the wire cables are subject to the aging in an air oven with the temperature of 180 DEG C for 168h, the retention rates of the tensile strength and the elongation at break of the wire cables are more than or equal to 80 percent; when the wire cables are dipped in water at the room temperature for 7 days, at the temperature of 20 DEG C, the volume resistivity is less than 10 times reduced, therefore, the plastics is a macro molecular hybrid material for the highly fire-retardant environment-friendly polyolefine wire cables, which is good in mechanical property.

The invention discloses a needle flame grade semitransparent PC (polycarbonate) material for an anti-collision strip and a preparation method thereof. The needle flame grade semitransparent PC material for the anti-collision strip consists of the following components in percentage by weight: 87-92% of polycarbonate, 8-12% of flame retardant, 0.3-0.5% of flame-retarding synergist and 0.2-0.4% of antioxidant, and the flame retardant is bromotriazine. The needle flame grade semitransparent PC material for the anti-collision strip, which is prepared by the preparation method, has excellent over-all properties, high strength, good ductility and high heat resistance; grains and a workpiece after injection molding are semitransparent; during a needle flame test, the PC material extinguishes once the PC material leaves fire; further, combusting cotton does not drip; and the PC material has quite high safety performance.

This heat-resistant, flame-retardant fabric for protective clothing is constituted from a uniform blended spun yarn, and when the fabric contains 100% by mass of the spun yarn, the spun yarn includes 25-75% by mass of a polyetherimide fiber, 20-50% by mass of at least one fiber selected from wool and flame retardant rayon, and 5-25% by mass of a para-aramid fiber. When the fabric is exposed to a heat flux of 80 kW / m2+ / -5% for three seconds in accordance with the ISO 9151 Determination of Heat Transmission on Exposure to Flame test, there is no thermal shrinkage, and in a combustion test in accordance with JIS L 1091A-4, the char length in both the vertical and the horizontal direction is 10 cm or less. Consequently provided are a fabric for protective clothing, and a spun yarn for use therein, said protective clothing remaining comfortable even if the wearer perspires while working or wears the clothing in hot weather, having high heat resistance and flame retardancy, having good dyeability, and low production costs.

The invention relates to a cutting nozzle applied to a welding gun, which comprises a cutting nozzle body (1), wherein the cutting nozzle (1) is made from a tellurium copper material and vent holes on the cutting nozzle body (1) are drilled by a drilling machine. The method for manufacturing the cutting nozzle comprises the following steps: material selection: selecting a tellurium copper round bar, cutting off the tellurium copper round bar, flattening the front end face and the rear end face, and performing metalworking on a concave surface (12) of the rear end; hole drilling: drilling holes on a blank with the concave surface (12) through the metalworking; forging and stamping: performing once forging and stamping on the vent holes at the front end; dimension processing: performing angle outer diameter processing at the front end, performing matched angle processing at the rear end, and performing washing with hot water; and finished product: performing flame test on the processed cutting nozzle (1), rolling characters, performing surface treatment and obtaining the finished product through packaging. The cutting nozzle has the advantages that: by adopting the tellurium copper as the raw material instead of red copper, the fastening performance of the tellurium copper is good; the stickness is lower than that of the red copper; the vent holes are not easy to block; the tellurium copper has better heat resistance and long service life; the drilling machine hole drilling is adopted to replace artificial hole drilling and most of the forging and stamping process steps so that the workload is greatly reduced, and the quality of the formed vent holes is ensured effectively, the drilled vent holes are more normative, and the drill ways are smoother; and the manufacturing procedures are reduced.

The invention discloses a high tenacity low smoke zero halogen flame retardant polypropylene and a preparation method thereof and the polypropylene comprises the following components according to the parts by weight; 10-90 parts of polypropylene, 10-90 parts of flexibilizer, 100-160 parts of inorganic flame retardant, 2-20 parts of flame-retardant synergist, 2-5 parts of reactive compatibilizer, 0.1-2 parts of antioxidant, 0.5-5 parts of flow modifier, 0.1-5 parts of surface modifier and a defined amount of coloring agent. The low smoke zero halogen flame retardant polypropylene has the advantage of good mechanical properties, good flame resistance (the vertical flame test of the polypropylene passes UL94V-0 level), low smoke density which is not more than 20%, good aging resistance and low cost, and can meet the processing demands for injection and extrusion molding.

The purpose of the present invention is to provide a thermoplastic elastomer composition that shows outstanding flexibility over a wide temperature range from normal temperatures to low temperatures, has rank V-0 flame retardancy in a UL94 vertical flame test without the use of halogen-based flame retardants, has outstanding thermal conductivity, electrical insulation performance, and electrolysis resistance, and can be suitably used as a protective member for a soft battery pack. The present invention provides a thermoplastic elastomer composition for a battery pack protective member, the composition containing: 100 parts by mass of a resin composition that comprises (a) 20-80% by mass of a hydrogen additive that is a copolymer of an aromatic vinyl compound and a conjugated diene compound and (b) 80-20% by mass of a non-aromatic rubber softener, with the total of (a) and (b) being 100% by mass; (c) 0.1-10 parts by mass of a modified resin; and (d) 250-400 parts by mass of magnesium hydroxide.