65 results about "Coir fibre" patented technology

PCT No. PCT/AU97/00535 Sec. 371 Date May 24, 1999 Sec. 102(e) Date May 24, 1999 PCT Filed Aug. 21, 1997 PCT Pub. No. WO98/07804 PCT Pub. Date Feb. 26, 1998A fire retardant absorbent material including coir fibres and/or coir dust, an effective quantity of a fire retardant material in the form of small particles, the particle size of the fire retardant material being of the order of less than 1 micron to ensure that the fire retardant material substantially penetrates or substantially coats at least a substantial proportion of the coir fibres present in the absorbent material.

A method and system for the production of fibers for use in biocomposites is provided that includes the ability to use both retted and unretted straw, that keeps the molecular structure of the fibers intact by subjecting the fibers to minimal stress, that maximizes the fiber's aspect ratio, that maximizes the strength of the fibers, and that minimizes time and energy inputs, along with maintaining the fibers in good condition for bonding to the polymer(s) used with the fibers to form the biocomposite material. This consequently increases the functionality of the biocomposites produced (i.e. reinforcement, sound absorption, light weight, heat capacity, etc.), increasing their marketability. Additionally, as the disclosed method does not damage the fibers, oilseed flax straw, as well as all types of fibrous materials (i.e. fiber flax, banana, jute, industrial hemp, sisal, coir) etc., can be processed in bio composite materials.

The invention provides a preparation method of a coconut shell charcoal/three-dimensional graphene composite material. The preparation method comprises the following steps: S1, pretreating coconut shells to obtain a three-dimensional coconut shell fiber skeleton; S2, carbonizing the three-dimensional coconut fiber skeleton in an inert atmosphere, and then performing broaching and activating treatment to obtain a three-dimensional porous activated carbon fiber skeleton; S3, preparing a graphene oxide dispersion liquid, and adding functional components into the graphene oxide dispersion liquid to obtain a composite solution; S4, reacting the activated carbon fiber skeleton with the composite solution at high temperature and high pressure for 0.5-24 hours, and cleaning and drying after the reaction is finished; and S5, sintering the sample obtained in the step S4 in an inert atmosphere to obtain the coconut shell charcoal/three-dimensional graphene composite material. According to the preparation method of the coconut shell charcoal/three-dimensional graphene composite material, the problem that three-dimensional graphene is easy to crack in the preparation process is solved, and theobtained coconut shell charcoal/three-dimensional graphene composite material has better mechanical properties and electromagnetic wave absorption performance.

The invention discloses a production process of environment-friendly colored non-woven fabric, and relates to the technical field of non-woven fabric production. The preparation method comprises the following steps of: preparing raw materials, specifically, preparing 20-25 parts by weight of polypropylene, 2-3 parts by weight of bamboo fiber, 1-3 parts by weight of flax, 2-5 parts by weight of coconut fiber, 1-2 parts by weight of kapok fiber, 5-7 parts by weight of sisal hemp, 3-4 parts by weight of sawdust and 1.5-3 parts by weight of silk; performing scutching and mixing, bisecting the polypropylene, respectively mixing and scutching the bisected polypropylene and the other raw materials in the step 1; performing carding to form a screen, carding all the raw materials except the polypropylene into a base layer, then carding the bisected polypropyleneinto covering layers respectively; and adhering the two covering layers to the upper surface and the lower surface of the base layer respectively by using an adhesive to form a fiber screen. The soft degree of the outer layer of the non-woven fabric can be improved, and the comfort level can be improved conveniently; the toughness of the base layer in the non-woven fabric can be improved, and the overall bending strength and breaking strength of the non-woven fabric can be improved.

The invention provides a method for producing C40 concrete. The method comprises the following steps: (1) preparing the following raw materials in parts by weight for each cubic meter of concrete: 230-240Kg of cement, 95-105g of coal ash, 160-170kg of water, 830-840kg of sand, 935-955kg of bluestone, 120-130kg of mineral powder, 8-10kg of a composite water reducing agent and 12-18kg of a mixed fiber, wherein the composite water reducing agent comprises a polycarboxylate superplasticizer, an aliphatic water reducing agent, a reinforcing agent, an expanding agent, an anti-sinking agent, a defoaming agent and water; the mixed fiber is a mixture of aluminum oxide fine powder, short carbon fiber, polyethylene long fiber and coconut shell fiber, and the bluestone is crushed for certain size grading; (2) preparing the composite water reducing agent; and (3) adding the coal ash and the mineral powder into an upright stirrer, performing stirring, adding bluestone, sand and cement, performing stirring at a speed of 90-105r/min, adding the mixed fiber, performing stirring at a speed of 230-260r/min, adding the composite water reducing agent and water, performing stirring at a speed of 130-150r/min firstly, and further performing stirring at a speed of 160-180r/min, so as to obtain the C40 concrete. The C40 self-compacted concrete produced by using the production method which is provided by the invention and is used for producing the C40 concrete takes both good compensation shrinkage and peaceability into account.

The invention discloses a luggage shell material which comprises an outer side layer, an inner side layer and a middle layer located between the outer side layer and the inner side layer, the outer side layer is made of a biodegradable antifouling material, the middle layer is made of a coconut shell fiber/polybutylene succinate composite material, the inner side layer is made of an inorganic fiber reinforced material, the coconut fiber/polybutylene succinate composite material and the inorganic fiber reinforced material are compounded into a plate through heating and pressurizing, and the biodegradable anti-fouling material is uniformly attached to the surface of the coconut fiber/polybutylene succinate composite material through spraying. The invention belongs to the technical field of high polymer materials, and particularly relates to the luggage shell material which is good in drawing depth, high in bending strength, high in impact strength and capable of being biodegraded.

The invention discloses a coconut fiber and coconut geotextile composite reinforced expansive soil roadbed and a construction method thereof. The coconut fiber and coconut geotextile composite reinforced expansive soil roadbed comprises a foundation layer, a roadbed layer laid on the top surface of the foundation layer and a pavement layer laid on the top surface of the roadbed layer, wherein the roadbed layer comprises a roadbed base body and a plurality of reinforced structure layers; the roadbed base body is formed by mixing and compacting coconut shell fibers and expansive soil, and the reinforced structure layer is mainly composed of coconut shell geotechnical cloth. The expansive soil roadbed mainly solves the problems of poor permeability, water swelling, water loss shrinkage, multiple cracks, humidification and the like of a current expansive soil roadbed, the coconut shell fibers and the coconut shell geotextile are used, the coconut shell fibers and the coconut shell geotextile serve as rib materials, the strength of a soil body is greatly improved, the coconut shell geotextile and the coconut shell fibers are environment-friendly materials, and therefore the expansive soil roadbed is environmentally friendly. And the method plays an important role in protecting the environment and saving resources.

The invention relates to the field of regenerated bricks, and particularly discloses an environment-friendly regenerated brick and a preparation method thereof. The preparation method of the environment-friendly recycled brick comprises the following steps: step a, mixing Portland cement, water, nano silica fume and fatty alcohol-polyoxyethylene ether to form a prefabricated mixture, then infiltrating the prefabricated mixture into gaps of recycled aggregate, and mixing the prefabricated mixture with the filled recycled aggregate to obtain a mixture; step b, performing modification operation on silicon dioxide to obtain modified silicon dioxide; c, performing modification operation on the coconut shell fibers to obtain modified coconut shell fibers; step d, mixing the mixed material, the modified silicon dioxide and the modified coconut fiber, and standing, curing and forming to obtain the environment-friendly regenerated brick. The preparation method disclosed by the invention has the advantages that the environment-friendly recycled brick can completely utilize the recycled aggregate to replace natural aggregate, resources are saved, and the production cost is reduced.

The invention relates to a mechanical coconut fiber extraction method and device. The device is composed of a preliminary extraction mechanism, a soaking mechanism, a coconut shell smashing mechanism, a mechanical loosening mechanism, a drying mechanism, an impurity removing and screening mechanism and a collecting mechanism. Mature coconuts are placed in the preliminary extraction mechanism, and preliminary extraction of coconut fibers is completed by fixing, clamping and cutting the mature coconuts. Then the coconut fibers enter the soaking mechanism, after soaking is completed, large coconut shells are smashed, the coconut fibers are mechanically loosened through the mechanical loosening mechanism, and the coconut fibers are dried under the action of the drying mechanism. Finally, the coconut fibers and impurities are screened through the impurity removing and screening mechanism, and the coconut fibers and the impurities are subpackaged in a coconut fiber collecting box and an impurity collecting box, so that the whole process of coconut fiber extraction is completed. The mechanical coconut fiber extraction method and device provided by the invention are suitable for extraction of the coconut fibers of the mature coconuts, and manual operation is replaced, so that the workload is reduced, and the working efficiency is improved.

The invention relates to a preparation method of a natural coconut fiber reinforced epoxy resin composite fiber. The preparation method of the natural coconut shell fiber reinforced epoxy resin composite fiber comprises the steps of trimming the prepared coconut shell fiber into fiber segments with the length of 0.5-5 cm; mixing and stirring the fiber segments and molten epoxy resin for 10-20 minin a spherical stirrer according to the mass ratio of 5%-20%; coating a first layer of release agent on the inner surface of a mold, standing for 5-10min and waiting for solidification of the releaseagent, then coating a second layer of release agent on the surface of the first layer of release agent, and slowly injecting the composite resin melt into the mold after the two layers of release agents are completely solidified; sealing and vacuumizing the mold filled with the composite resin melt; and extruding the composite resin melt through an extrusion molding method, and manufacturing a molded composite fiber body. The preparation method of the natural coconut fiber reinforced epoxy resin composite fiber has the advantage of high durability.

The invention discloses a high-strength environment-friendly carton and a preparation method thereof. The high-strength environment-friendly carton is finally obtained through pulping, papermaking and hot press molding. The paper base is reinforced through the synergistic effect of the two kinds of environment-friendly fibers, the mechanical strength of the carton is enhanced, the adopted polylactic acid/polycaprolactone composite fibers have biodegradability, polylactic acid and polycaprolactone are mixed, so that the brittleness of polylactic acid is reduced, the toughness is enhanced; and the coconut shell fibers modified through magnesium oxide act together, therefore, the high-strength environment-friendly carton has excellent mechanical strength.