WO2006016499A1 - Fibres de résine thermoplastique destinées à renforcer le ciment - Google Patents

Fibres de résine thermoplastique destinées à renforcer le ciment Download PDF

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Publication number
WO2006016499A1
WO2006016499A1 PCT/JP2005/014072 JP2005014072W WO2006016499A1 WO 2006016499 A1 WO2006016499 A1 WO 2006016499A1 JP 2005014072 W JP2005014072 W JP 2005014072W WO 2006016499 A1 WO2006016499 A1 WO 2006016499A1
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Prior art keywords
fiber
thermoplastic resin
cement
resin fiber
sulfonic acid
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PCT/JP2005/014072
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English (en)
Japanese (ja)
Inventor
Kazumasa Nakashima
Michio Okuhira
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Hagihara Industries Inc.
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Publication of WO2006016499A1 publication Critical patent/WO2006016499A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B16/04—Macromolecular compounds
    • C04B16/06—Macromolecular compounds fibrous
    • C04B16/0616—Macromolecular compounds fibrous from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B16/0625—Polyalkenes, e.g. polyethylene
    • C04B16/0633—Polypropylene
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/144—Alcohols; Metal alcoholates
    • D06M13/148—Polyalcohols, e.g. glycerol or glucose
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
    • D06M13/248—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing sulfur
    • D06M13/256—Sulfonated compounds esters thereof, e.g. sultones
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds

Definitions

  • the present invention relates to a thermoplastic resin fiber for cement reinforcement having an excellent reinforcing effect for concrete or mortar.
  • the concrete mixed with steel fibers is difficult to transport and mix with the material because the specific gravity of steel fibers is as high as 7.8, and in sprayed concrete, it falls due to rebounding during spraying. It has been pointed out that there is a high risk of injury due to trampling of the damaged steel fibers, and that the steel fibers are glaring.
  • the concrete mixed with polybulualcohol fiber has water absorbency, and when the fiber is alkali and high in temperature, it hydrolyzes, and the slump is significantly reduced compared to the fiber not mixed with fiber. This tends to cause inconveniences such as the need to increase the unit water volume to secure the slump required for spraying.
  • Patent Document 2 In order to solve such problems, in recent years, there have been attempts to use polyolefin fibers instead of steel fibers and polyvinyl alcohol fibers for reasons such as good formability, light weight, and low cost (for example, Patent Document 2).
  • Polyolefin fibers are generally single yarns, bundled yarns, or split yarn short fibers having a fineness of lOOdt or less and a fiber length of 5 mm or less. This fiber shape force is also a property, and a fiber lump called a fiber ball is formed with short fibers with low fineness. However, if the fineness is increased to improve the dispersibility, the fiber will be pulled out if the adhesion to the cement is poor and bending stress is applied. There is a tendency that a sufficient reinforcing effect cannot be obtained.
  • Patent Document 1 Japanese Patent Publication No. 1-40786 (1 page)
  • Patent Document 2 JP-A-9 86984 (2 pages)
  • Patent Document 3 Japanese Patent Laid-Open No. 11 116297 (2 pages)
  • Patent Document 4 Japanese Unexamined Patent Application Publication No. 2004-168645 (2 pages)
  • the present invention was made in order to solve the problems of the prior art as described above, and can permanently impart hydrophilicity to thermoplastic resin, particularly polypropylene-based resin fiber, Seme It is an object of the present invention to provide a cement-reinforced thermoplastic resin or polypropylene-based resin fiber that has good dispersibility with the cement and physical bond with the cement and improves the bending toughness of the cement molded product.
  • the present invention performs surface oxidation treatment on a thermoplastic resin fiber, in particular, a polypropylene resin fiber, and coats the oxidized surface with a specific surface treatment agent.
  • a thermoplastic resin fiber in particular, a polypropylene resin fiber
  • coats the oxidized surface with a specific surface treatment agent.
  • the first gist of the present invention is that the surface of the thermoplastic resin fiber is subjected to surface oxidation treatment, and the sulfonic acid compound, polyols and polycarboxylic acid compound force are also selected on the surface.
  • a thermoplastic resin fiber for cement reinforcement characterized by adhering 0.1 to 5% by weight of at least one kind of compound
  • the second gist is that the fiber is spun from polypropylene-based resin.
  • a surface oxidation treatment is applied to the fiber surface, and at least one selected compound or mixture of two or more selected sulfonic acid compounds, polycarboxylic acids and polyols is adhered to the surface by 0.1 to 5% by weight.
  • the characteristic feature is polypropylene fiber for cement reinforcement.
  • thermoplastic resin fiber for cement reinforcement of the present invention is subjected to surface oxidation treatment on the surface of the fiber of the thermoplastic resin, in particular, the surface of the polypropylene fiber, and is then used as a surface treatment liquid.
  • the hydrophilicity imparted by the oxidation treatment of the fiber surface by applying a specific amount of at least one compound of a compound, a polyol complex or a polycarboxylic acid compound and applying it by drying.
  • the thermoplastic resin used in the present invention is not particularly limited, but is not limited to polyolefin resin, polychlorinated bur, polyester, polyamide, polybulal alcohol, poly Examples thereof include styrene.
  • polyolefin resin include high-density polyethylene, medium-density polyethylene, linear low-density polyethylene, ethylene-a-olefin copolymer produced using a meta-octane catalyst, polypropylene-based resin, and polybutene. 1.
  • Poly-4-methylpentene 1 ethylene acetate butyl copolymer, ethylene acrylate ethyl copolymer, maleic anhydride modified polyolefin, etc. are used, but power polypropylene-based resin is preferred.
  • polyester polyethylene terephthalate, polybutylene terephthalate, or the like is used.
  • polypropylene-based resin a polypropylene copolymer such as a propylene homopolymer, an ethylene-propylene block copolymer or a random copolymer, or a mixture thereof can be used.
  • propylene homopolymers are particularly desirable for cement reinforcement where high strength and heat resistance are required, and it is particularly desirable to select those having an isotactic pentad ratio of 0.95 or more.
  • This polypropylene resin melt melt rate (hereinafter abbreviated as MFR) is selected in the range of 0.1 to 30 g / 10 min, preferably l to 10 g / 10 min in terms of continuous and stable productivity. It is good.
  • polystyrene resin may be added to the polypropylene-based resin as necessary.
  • Other polyolefins here include high-density polyethylene, linear low-density polyethylene, low-density polyethylene, ethylene acetate butyl copolymer, ethylene alkyl acrylate copolymer, and other polyethylene-based resins, polybutene 1, etc. is there.
  • a form of drawn yarn that also has thermoplastic resin fiber strength a flat yarn obtained by slitting a film, a split yarn obtained by splitting a flat yarn, a monofilament obtained by drawing a filament that also extrudes a spinning nozzle force, The ability to use multi-filaments with converged low-definition filaments. Flat yarns and monofilaments are preferred.
  • thermoplastic resin The case where polypropylene-based resin is used as the thermoplastic resin is described in detail below.
  • a film is formed by a T-die method or an inflation method, and a formed film (hereinafter, undrawn) is used. (Referred to as film) is slit and then stretched, and then heat treated to form a flat yarn. Stretching is performed at a temperature below the melting point of polypropylene and above the softening point. Heating methods include hot roll type, hot plate type, infrared type, hot air. Any of these methods can be employed, and among these, the hot roll method is preferable in view of stretching efficiency, high-speed productivity, and stability.
  • the slit polypropylene film is heated and stretched by the difference in peripheral speed between the front and rear rolls.
  • the draw ratio is 5 times or more, preferably 7 to 15 times, more preferably 9 to 13 times.
  • the production method is not particularly limited, and a production technique for extruding a circular, elliptical, irregular, or other continuous yarn-shaped die force filament is used. Can be adopted.
  • a composite monofilament having a polypropylene high-melting component as a core layer and a polypropylene low-melting component as a sheath layer can also be used as the monofilament structure.
  • polypropylene of each layer is melt-kneaded with an extruder, and a core layer made of a high melting point component is supplied from a central discharge hole of a die in which two layers of discharge holes are provided on a substantially concentric circle.
  • a composite monofilament is obtained by extruding and coating a sheath layer having a melting point component force.
  • the substantial strength depends on the physical properties of the core layer, it is preferable to use a propylene homopolymer, a isotactic polypropylene or the like as the high melting point component, while propylene ethylene propylene is used as the low melting point component. Copolymers, random copolymers and syndiotactic polypropylene are preferred.
  • the monofilament is subjected to heat stretching and heat relaxation treatment, and the rigidity of the filament is increased by this heat treatment to obtain a polypropylene monofilament suitable for cement reinforcement having a small elongation.
  • This hot drawing is performed at a temperature below the melting point of polypropylene and above the softening point. Usually, the drawing temperature is 90 to 150 ° C, and the draw ratio is usually 5 to 12 times, preferably? ⁇ 9 times.
  • the hot stretching method methods such as a hot roll method, a hot plate method, an infrared irradiation method, a hot air oven method, and a hot water method can be adopted.
  • the tensile strength of the flat yarn or filament of polypropylene is 5 g / d or more, and preferably 6 g / d or more. Further, the tensile elongation is 20% or less, preferably 15% or less. If the tensile strength and tensile elongation are outside these ranges, the strength as a polypropylene fiber for cement reinforcement is insufficient, which is preferable!
  • the single yarn fineness of the formed flat yarn or filament of polypropylene is in the range of 5 to 10,00 Odt, preferably in the range of 200 to 6,500 dt.
  • the single yarn fineness is less than 200 dt, the fibers are too thin and the dispersion in the concrete mixture is uneven and tends to become fiber balls, which causes problems in terms of workability and reinforcement.
  • the single yarn fineness exceeds 10,000 dt The contact area of the fiber with the concrete admixture is reduced, and it tends to be pulled out with respect to bending stress.
  • the flat yarn or filament of polypropylene needs to have irregularities on the surface as the next step of hot drawing.
  • the contact area between the fiber and the concrete can be increased, and the reinforcing effect can be enhanced by suppressing the pull-out of the fiber after the concrete is hardened.
  • Examples of a method for forming irregularities on the surface include a method of embossing a flat yarn or a filament. Embossing is performed by passing a flat yarn or filament through an embossing roll before or after stretching, so that unevenness is continuously formed in the longitudinal direction of the flat yarn or filament.
  • the shape such as the length and depth of the emboss may be arbitrary, but the average flatness ratio of the fiber cross section by crushing is in the range of 1.5 / 1 to 7/1, preferably 1.8 / 1 to It needs to be 7/1.
  • This average flatness is a numerical value showing the average ratio of width and height in the cross-sections of various shaped shapes. If the average flatness is less than 1.5 / 1, While there are few uneven shapes, there is no difference in the reinforcing effect from smooth surface fibers.On the other hand, when the average flatness ratio exceeds 7/1, strength deterioration due to shaping is significant. Dispersibility in concrete tends to be poor, which is a problem.
  • the polypropylene fiber includes an antioxidant, a lubricant, an ultraviolet absorber, an antistatic agent, an inorganic filler, an organic filler, a crosslinking agent, a foaming agent, a nucleating agent and the like without departing from the gist of the present invention. These additives may be blended.
  • the surface of the polypropylene fiber is subjected to a surface oxidation treatment, and the surface has a wet tension of 40 mN / m or more, preferably 40 to 70 mN / m. And If the surface wetting tension is less than 40 mN / m, hydrophilicity cannot be sufficiently imparted to the polyolefin resin fiber, and the bending strength and impact strength of the cement molded product cannot be increased. It cannot be improved.
  • the wetting tension is a value based on “JIS K 6768 Wetting Tension Test Method”.
  • the surface oxidation treatment is at least one treatment method selected from corona discharge treatment, plasma treatment, flame plasma treatment, electron beam irradiation treatment, and ultraviolet irradiation treatment, and corona discharge treatment and plasma treatment are preferred.
  • Corona discharge treatment is a treatment condition that is usually used, for example, a distance of 0.2 to 5 mm between the electrode tip and the substrate to be treated.
  • the treatment amount is 10 W 'min or more per lm 2 of polypropylene fiber.
  • the range is preferably 10 to 200 W. min, and more preferably 10 to 180 W. min. If it is less than 10 W 'min / m 2 , the effect of corona discharge treatment is insufficient, the wetting tension of the fiber surface cannot be within the above range, and the bending strength and impact strength of the cement molded product are improved. I can't.
  • the plasma treatment step is performed by using a single gas such as argon, helium, krypton, neon, xenon, hydrogen, nitrogen, oxygen, ozone, carbon monoxide, carbon dioxide, sulfur dioxide or a mixed gas thereof, for example,
  • a plasma jet is generated electronically by generating a plasma discharge by applying a voltage between counter electrodes under a pressure close to atmospheric pressure with a mixed gas of oxygen and nitrogen containing an oxygen concentration of 5 to 15% by volume. After excitation, the charged particles are removed, and an electrically neutral excitation mixed gas is sprayed onto the surface of the plastic substrate.
  • the distance between the electrodes through which the plastic substrate to be treated passes is a force that is appropriately determined according to the thickness of the substrate, the magnitude of the applied voltage, the flow rate of the mixed gas, etc.
  • it is in the range of 2 to 30 mm
  • the voltage applied between the electrodes is preferably applied so that the electric field strength at the time of application is 40 kV / cm.
  • the frequency of the AC power supply at that time is l is in the range of 100kHz.
  • the flame plasma treatment step can be carried out by blowing ionized plasma in a flame generated when natural gas or propane is burned onto the surface of the plastic substrate.
  • the electron beam irradiation treatment step is performed by irradiating the surface of the plastic substrate with an electron beam generated by an electron beam accelerator.
  • an electron beam irradiation device for example, a device that can irradiate a uniform electron beam in the form of a curtain from a linear filament "elect mouth curtain" ( Product name) can be used.
  • the ultraviolet irradiation treatment step is carried out, for example, by irradiating the surface of the plastic substrate with ultraviolet rays having a wavelength of 200 to 400 ⁇ m.
  • the surface treatment agent used in the present invention is mainly composed of at least one compound of a sulfonic acid compound, a polyol, or a polycarbonate compound, and one or two of these compounds The above is used.
  • sulfonic acid compounds include ligne sulfonic acid compounds, naphthalene sulfonic acid formalin condensates, melamine sulfonic acid formalin condensates, anthracene sulfonic acid formalin condensates, and aromatic amino sulfonic acid compounds.
  • polyols examples include neopentyl glycol, pentaerythritol, neopentyl darlicol hydroxyhydroxyphosphate or derivatives thereof, hexanediol or pentanediol.
  • Polycarboxylic acid compounds include styrene maleic anhydride copolymers and partially esterified products thereof, aryl ether maleic anhydride copolymers and derivatives thereof, vinyl ether maleic anhydride copolymers and derivatives thereof, ( (Branched) pentyl ether maleic anhydride copolymer and derivatives thereof, (meth) acrylic acid (meth) acrylic acid ester copolymers and derivatives thereof.
  • water-reducing agents and high-performance water-reducing agents used for the purpose of imparting high fluidity to ready-mixed concrete for example, water-reducing agents from the Phenoris series of NEMBEE, Leo Build SP series of high-performance water reducing agents and the like can be mentioned, and these can be suitably used as the surface treatment agent of the present invention.
  • the method of attaching the surface treatment agent to the polypropylene fiber is generally performed by a method of applying the surface treatment agent to the polypropylene fiber.
  • a coating method Dip coating method (dipping method) in which polypropylene fiber is dipped in surface treatment solution, spray coating method in which surface treatment solution is sprayed onto polypropylene fiber, and applied to polypropylene fiber using brush coating or roll coater
  • dipping method in which polypropylene fiber is dipped in surface treatment solution
  • spray coating method in which surface treatment solution is sprayed onto polypropylene fiber, and applied to polypropylene fiber using brush coating or roll coater
  • Examples thereof include a method of applying a surface treating agent solution, a knot dry method and the like, and among these, a dip coating method is preferable.
  • the surface treatment agent is applied to the polypropylene fiber and then dried.
  • the drying temperature is usually 10 ° C or higher, preferably 20 to 90 ° C, more preferably 30 to 90 ° C. It is a range. When the drying temperature is 30 to 90 ° C., it is preferable because the wet tension increases, the adhesion to the cement increases, and the bending toughness coefficient and bending toughness increase.
  • the amount of the surface treatment agent attached to the polypropylene fiber is 0.1 to 5% by weight, preferably 0.5 to 5% by weight, based on the total fiber. If the adhesion amount is less than 0.1% by weight with respect to the total fiber, the polypropylene fiber is not sufficiently hydrophilic, and the bending strength and bending toughness of the cement molded body are insufficiently improved. The effect of imparting hydrophilicity is not further improved, and therefore, the bending strength and bending toughness of the cement molded body reach an equilibrium, and conversely the cost increases.
  • the polypropylene fiber subjected to the surface treatment in this manner is cut into a predetermined length and becomes a short fiber for cement reinforcement.
  • the length of the short fiber is 5 to 100 mm, preferably 20 to 70 mm. If the fiber length is less than 5 mm, the cement will come off, and if it exceeds 100 mm, the dispersibility will be poor.
  • the polypropylene fiber for cement reinforcement of the present invention is used as a reinforcing fiber material by blending with cement, fine aggregate, coarse aggregate, water and an appropriate amount of concrete admixture.
  • the cement include hydraulic cements such as Portland cement, blast furnace cement, silica cement, fly ash cement, white Portland cement, and alumina cement, and cements such as plaster, air-hardening cement such as lime, and the like.
  • fine aggregates examples include river sand, sea sand, mountain sand, crushed sand, quartz sand, glass sand, iron sand, ash sand, and other artificial sand.
  • Coarse aggregates include reki, gravel, crushed stone, slag, and various artificial sands.
  • a typical example is lightweight aggregate.
  • cement reinforcing polypropylene fiber spraying construction for use if the concrete of the present invention, the amount is, cement, fine aggregate, coarse aggregate, the concrete mixture lm 3 consisting of water, etc.
  • a concrete mixture made of cement, fine aggregate, coarse aggregate, water or the like is added to form base concrete, and after mixing this base concrete, polypropylene fiber is mixed. It is preferable to add and knead.
  • the mixing time is the power by the amount of mixing per time. Generally, mixing of base concrete is 45 to 90 seconds, mixing polypropylene fiber after mixing. Even the range of 45 to 90 seconds is appropriate.
  • the spray nozzle for constructing spray concrete in such a slump range should be arranged at right angles to the spray surface and the distance between the nozzle and the spray surface should be 0.5 to 1.5 m. It becomes.
  • the wetting tension of the obtained monofilament surface was 32 mNZm.
  • This polypropylene monofilament was subjected to corona discharge treatment at 30 W'min per lm 2 of polypropylene monofilament surface as surface acid treatment, and the wetting tension of the obtained monofilament surface was 45 mNZm.
  • the polypropylene monofilament is immersed in a treatment solution (Polylith No. 70, manufactured by ENUMB Co., Ltd.) consisting of a lignosulfonic acid compound and a polyol composite as a surface treatment agent. After the pickling treatment, it was dried at 20 ° C to adhere 1% by weight of the surface treatment solution. The polypropylene monofilament was cut to a fiber length of 48 mm to obtain polypropylene fiber.
  • a treatment solution Polylith No. 70, manufactured by ENUMB Co., Ltd.
  • the polypropylene fiber obtained above was subjected to a fiber adhesion test by the following method, and the results are shown in Table 2.
  • the specimen preparation method and loading test method were in accordance with the Japan Concrete Engineering Association “JCI-SF8 Fiber Adhesion Test Method”.
  • Partition plate thickness 0.5 (mm)
  • Polypropylene fiber was used which was stored for 180 days at room temperature after the surface treatment agent was applied and dried.
  • Curing was carried out at 20 ° C under water for 14 days.
  • the polypropylene fiber obtained above was tested for concrete reinforcement effect by the following method, and the results are shown in Table 3.
  • Admixture High-performance AE water reducing agent ENEBBY Rheobuild SP8SB 4.42kg / m 3 Fiber: Polypropylene fiber is a volume that is stored for 180 days at room temperature after it has been surface-treated and dried. As a result, 0.3% was blended.
  • Kneading is performed by adding coarse aggregate, fine aggregate and cement for 30 seconds, then adding water and admixture, mixing for 120 seconds, adding reinforcing fibers and mixing for 60 seconds. Mix and drain.
  • Example 1 the obtained polypropylene monofilament was subjected to corona discharge treatment, followed by the same treatment except that a surface treatment agent was adhered and dried at 60 ° C. for 4 hours.
  • the results are shown in Tables 1 to 3.
  • Example 1 plasma treatment was performed on the surface of the obtained polypropylene monofilament at 2.5 kW in a two-stage treatment, and then a surface treatment agent was attached and dried at 60 ° C for 4 hours. The procedure was the same except for the above. The results are shown in Tables 1 to 3.
  • Example 4 In Example 1, plasma treatment was performed on the surface of the obtained polypropylene monofilament in a two-step treatment at 2.5 kW, and then a surface treatment agent was adhered and dried at 20 ° C. The same was done. The results are shown in Tables 1 to 3.
  • Example 1 the same procedure was performed except that the obtained polypropylene monofilament was not subjected to corona discharge treatment and adhesion of the surface treatment agent at all. The results are shown in Tables 1 to 3.
  • Example 1 the same procedure was performed except that the surface treatment agent was not adhered to the polypropylene monofilament obtained by corona discharge treatment. The results are shown in Tables 1 to 3.
  • Example 1 plasma treatment was performed on the surface of the obtained polypropylene monofilament in the same manner except that the surface treatment agent was not adhered after performing a two-step treatment at 2.5 kW. .
  • the results are shown in Tables 1 to 3.
  • the polypropylene fiber cement was treated with a surface treatment solution and then dried by applying a surface treatment solution, compared to the one without the surface treatment solution. It was found that the adhesive strength to was high.

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  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
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  • Ceramic Engineering (AREA)
  • Health & Medical Sciences (AREA)
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  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
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Abstract

Cette invention concerne des fibres de résine thermoplastique permettant de renforcer le ciment, dont l’hydrophilie est permanente et s’avérant donc excellentes dans la dispersibilité du ciment et la liaison physique avec le ciment. Par ailleurs, elles peuvent apporter aux moulages en sable au ciment une meilleure résistance à la flexion. Selon l’invention, on produit une fibre de résine thermoplastique (en particulier la fibre de polypropylène) en oxydant en surface la fibre de résine thermoplastique, en appliquant un traitement de surface contenant au moins un composé sélectionné parmi les acides sulfoniques, les complexes de polyol et les acides de polycarbonate, à la fibre de résine thermoplastique oxydée en surface, afin que le composé adhère à la surface de la fibre pour un volume de 0,1 à 5 % en poids, puis en séchant la fibre obtenue à 20 à 90 °C. La fibre de résine thermoplastique produite présente une hydrophilie supérieure à celle obtenue par la seule oxydation en surface, ce qui lui attribue d’excellentes propriétés dans la dispersibilité dans le ciment et la liaison physique avec le ciment, permettant ainsi d’obtenir des moulages en sable au ciment dont la ténacité et la résistance à la flexion sont excellentes.
PCT/JP2005/014072 2004-08-09 2005-08-02 Fibres de résine thermoplastique destinées à renforcer le ciment WO2006016499A1 (fr)

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JP2004232152 2004-08-09
JP2004-232152 2004-08-09
JP2004-237175 2004-08-17
JP2004237175A JP2007284256A (ja) 2004-08-09 2004-08-17 セメント強化用ポリプロピレン繊維

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Cited By (10)

* Cited by examiner, † Cited by third party
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WO2008123173A1 (fr) * 2007-03-26 2008-10-16 Kuraray Co., Ltd. Fibre de polypropylène, son procédé de fabrication et son utilisation
JP2008266872A (ja) * 2007-03-27 2008-11-06 Kuraray Co Ltd ポリプロピレン繊維
JP2009007727A (ja) * 2007-05-25 2009-01-15 Kuraray Co Ltd 耐熱性および強度に優れるポリプロピレン繊維の製造方法
JP2009084140A (ja) * 2007-09-10 2009-04-23 Kuraray Co Ltd 水硬性組成物および水硬化物
CN102492074A (zh) * 2011-11-24 2012-06-13 华东理工大学 一种侧链接枝萘磺酸基的梳型共聚物及其制备方法和应用
RU2457290C2 (ru) * 2007-03-26 2012-07-27 Курарей Ко., Лтд. Полипропиленовые волокна, способы их получения и их применение
WO2015136290A1 (fr) * 2014-03-12 2015-09-17 Enviromate Limited Matériau de construction et son procédé de fabrication
US10131579B2 (en) 2015-12-30 2018-11-20 Exxonmobil Research And Engineering Company Polarity-enhanced ductile polymer fibers for concrete micro-reinforcement
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US10717673B2 (en) 2015-12-30 2020-07-21 Exxonmobil Research And Engineering Company Polymer fibers for concrete reinforcement
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CN111996612B (zh) * 2020-08-10 2022-10-11 中国纺织科学研究院有限公司 一种增强增韧纤维及其制备方法

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