A sulfur-carbon composite including porous carbon material, and sulfur, wherein at least a portion of an inside and a surface of the porous carbon material coated with the sulfur, the sulfur-carbon composite has a pore volume of 0.180 cm.sup.3/g to 0.300 cm.sup.3/g, and the sulfur-carbon composite has an average pore size of 40.0 nm to 70.0 nm, and a method of manufacturing the same. Also, a method of manufacturing a sulfur-carbon composite, which includes (a) mixing a porous carbon material with sulfur particles, wherein the sulfur particles have a particle size of 1 nm to 1 μm using a Henschel mixer; and (b) drying the resulting mixture of (a).

The present invention relates to a processing technology for manufacturing seepage irrigation pipe with alternating effluent sections and non-effluent sections, and in particular, to the field of underground seepage irrigation in agriculture and forestry. The processing technology combines the production unit for water-effluent pipes with the production unit for non-effluent pipes, and produces the seepage irrigation pipeline by adjusting the raw material ratios, controlling the spindle speed, spindle acceleration time, and spindle deceleration time of the two pipeline production units, to generate a seepage irrigation pipe with alternating effluent sections and non-effluent sections. The lengths of the effluent sections and non-effluent sections can be adjusted, the pipe wall thickness can also be adjusted by adjusting the inner and outer diameter of the internal mold of the pipe forming unit, a seepage irrigation pipe with alternating effluent sections and non-effluent sections is environment-friendly, efficient, water-saving, and useful for underground irrigation.

A resin powder material comprising copolymerized polybutylene terephthalate resin powder and an inorganic substance, for example, fumed silica, having an average primary particle diameter of 100 nm or less in an amount up to 1.0 wt %. The polybutylene terephthalate resin comprises from 5 mol % to 15 mol % of Isophthalic acid and has powder with average particles diameter of 79 μm and a maximum particles diameter of 106 μm. Powder is obtained by grinding pellets of the copolymerized polybutylene terephthalate resin having a viscosity of 0.85 to 1.0 dl/g. Powder composition used for production of molded articles by powder laminate molding process.

The present disclosure provides an ultralow-glossiness, ultralow-temperature resistant ASA resin composition and preparation method thereof. The composition includes the following components in parts by weight: 20˜60 parts of an acrylonitrile-styrene-acrylate graft copolymer, 40˜80 parts of an acrylonitrile-styrene copolymer, 1˜20 parts of an ultralow-glossiness, low temperature resistant modifier, and 0.1˜5 parts of a processing aid. The ultralow-glossiness, low temperature resistant modifier includes a carrier copolymer, a fluorinated copolymer, a low-temperature flexibilizer, a coupling agent, fumed silica and an assistant. The ASA resin composition prepared by the present disclosure has an ultralow-glossiness, can be used to replace mold processing technology such leather marking and texturing, which greatly saves mold cost and processing production cost; and meanwhile it also has excellent low temperature resistance and can be applied in cases having requirements on low temperature resistance and low glossiness such as automobile parts, outdoor profiles, building materials and electrical appliances.

Disclosed is a preparation method for corncob-shaped HNT-PANI/PP, specifically comprising: polymerizing aniline in situ on cleaned HNTs in an ice-water bath; mixing corncob-shaped HNT-PANI composite powder obtained by vacuum drying and PP plastic in a high-speed mixer in a certain ratio, performing extrusion granulation by using a twin-screw extruder, and performing injection molding by using an injection molding machine to prepare standard sample strips of an HNT-PANI/PP composite material. The corncob-shaped HNT-PANI composite material prepared according to the present invention has excellent electrical conductivity, thermal conductivity and flame retardance, the mechanical properties of the composite material can be improved, electrical and flame-retardant properties of PP engineering materials can be improved, and thus the application field of PP is greatly broadened.

Disclosed is a preparation method for corncob-shaped HNT-PANI/PP, specifically comprising: polymerizing aniline in situ on cleaned HNTs in an ice-water bath; mixing corncob-shaped HNT-PANI composite powder obtained by vacuum drying and PP plastic in a high-speed mixer in a certain ratio, performing extrusion granulation by using a twin-screw extruder, and performing injection molding by using an injection molding machine to prepare standard sample strips of an HNT-PANI/PP composite material. The corncob-shaped HNT-PANI composite material prepared according to the present invention has excellent electrical conductivity, thermal conductivity and flame retardance, the mechanical properties of the composite material can be improved, electrical and flame-retardant properties of PP engineering materials can be improved, and thus the application field of PP is greatly broadened.

A method for producing a powder comprising at least one polymer for use in a method for the additive manufacture of a three-dimensional object is described. The method includes the step of mechanically treating the powder in a mixer with at least one rotating mixing blade, wherein the powder is exposed to a temperature T.sub.B and T.sub.B is at least 30° C. and is below the melting point T.sub.m of the polymer (determined according to DIN EN ISO 11357) if the polymer is a semi-crystalline polymer, or wherein T.sub.B is at least 30° C. and wherein T.sub.B is at most 50° C. above the glass transition temperature T.sub.g of the polymer (determined according to DIN EN ISO 11357) if the polymer is a melt-amorphous polymer. Compared to a time before the start of the treatment, it may be achieved that after the treatment, the bulk density of the powder is increased by at least 10% (or in the case of polymer, copolymer or polymer blend of polyamide at least 2% and more) and the BET surface area is decreased by at least 10%, and optionally also the pourability is improved by at least 10%.

The present invention relates to a processing technology for manufacturing seepage irrigation pipe with alternating effluent sections and non-effluent sections, and in particular, to the field of underground seepage irrigation in agriculture and forestry. The processing technology combines the production unit for water-effluent pipes with the production unit for non-effluent pipes, and produces the seepage irrigation pipeline by adjusting the raw material ratios, controlling the spindle speed, spindle acceleration time, and spindle deceleration time of the two pipeline production units, to generate a seepage irrigation pipe with alternating effluent sections and non-effluent sections. The lengths of the effluent sections and non-effluent sections can be adjusted, the pipe wall thickness can also be adjusted by adjusting the inner and outer diameter of the internal mold of the pipe forming unit, a seepage irrigation pipe with alternating effluent sections and non-effluent sections is environment-friendly, efficient, water-saving, and useful for underground irrigation.

The present invention relates to a processing technology for manufacturing seepage irrigation pipe with alternating effluent sections and non-effluent sections, and in particular, to the field of underground seepage irrigation in agriculture and forestry. The processing technology combines the production unit for water-effluent pipes with the production unit for non-effluent pipes, and produces the seepage irrigation pipeline by adjusting the raw material ratios, controlling the spindle speed, spindle acceleration time, and spindle deceleration time of the two pipeline production units, to generate a seepage irrigation pipe with alternating effluent sections and non-effluent sections. The lengths of the effluent sections and non-effluent sections can be adjusted, the pipe wall thickness can also be adjusted by adjusting the inner and outer diameter of the internal mold of the pipe forming unit, a seepage irrigation pipe with alternating effluent sections and non-effluent sections is environment-friendly, efficient, water-saving, and useful for underground irrigation.

A sulfur-carbon composite including porous carbon material, and sulfur, wherein at least a portion of an inside and a surface of the porous carbon material coated with the sulfur, the sulfur-carbon composite has a pore volume of 0.180 cm.sup.3/g to 0.300 cm.sup.3/g, and the sulfur-carbon composite has an average pore size of 40.0 nm to 70.0 nm, and a method of manufacturing the same. Also, a method of manufacturing a sulfur-carbon composite, which includes (a) mixing a porous carbon material with sulfur particles, wherein the sulfur particles have a particle size of 1 nm to 1 m using a Henschel mixer; and (b) drying the resulting mixture of (a).