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Lipophilic mineral composite fibers and preparation method thereof

A composite fiber and lipophilic technology, applied in glass manufacturing equipment, manufacturing tools, etc., can solve the problems of poor alkali resistance, strength and toughness degradation of glass fiber, etc., and achieve the effect of simple preparation method and easy access to raw materials

Inactive Publication Date: 2013-08-07
JIANGSU AOMI BUILDING MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its poor alkali resistance, glass fiber has serious strength and toughness degradation problems in concrete

Method used

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  • Lipophilic mineral composite fibers and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Raw material pretreatment: crush brucite and serpentinite with a crushing and ball milling machine to sort out the materials with a particle size of 80-90 mesh, and send them to the dust removal equipment for dust removal to obtain the fine materials required for production. Loosen and sieve to remove powdery mineral impurities to obtain crude mineral fiber;

[0037] (2) The crude mineral fiber is dried in a rotary temperature-controlled dryer, and the temperature of the dryer is controlled between 180°C and 240°C. After the material is dried, it is sent to the depolymerization machine for depolymerization. The linear speed of the depolymerization machine is 100-130m / s, so that the bundled fibers are depolymerized into monofilaments without destroying the aspect ratio;

[0038] (3) Chemically modify the fiber surface in the intermittent sub-storage surface modification equipment: inject the silicone penetrant into the buffer mixing tank with a high-pressure metering pump...

Embodiment 2

[0047] (1) Raw material pretreatment: crush brucite and serpentinite with a crushing and ball milling machine to sort out the materials with a particle size of 80-90 mesh, and send them to the dust removal equipment for dust removal to obtain the fine materials required for production. Loosen and sieve to remove powdery mineral impurities to obtain crude mineral fiber;

[0048] (2) The crude mineral fiber is dried in a rotary temperature-controlled dryer, and the temperature of the dryer is controlled between 180°C and 240°C. After the material is dried, it is sent to the depolymerization machine for depolymerization. The linear speed of the depolymerization machine is 100-130m / s, so that the bundled fibers are depolymerized into monofilaments without destroying the aspect ratio;

[0049] (3) Chemical modification of the fiber surface in the intermittent sub-storage surface modification equipment: the silicone penetrant is injected into the buffer mixing tank with a high-pressure m...

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Abstract

The invention discloses a preparation method of lipophilic mineral composite fibers, which comprises the following steps: pretreating the raw material, drying, depolymerizing, loosening, carrying out chemical treatment on the fiber surface, processing auxiliary materials, compounding the fibers and the like. The composite fibers prepared by the preparation method disclosed by the invention can obviously enhance the compression strength, bending resistance and other properties of asphalt concrete. Compared with the asphalt mixture without lipophilic mineral composite fibers, the compression strength of the asphalt mixture doped with 0.1% of lipophilic mineral composite fibers at 20 DEG C is enhanced by 17.9%; the compression strength at 15 DEG C is enhanced by 17.4%; the split strength at 15 DEG C is enhanced by 4.1%; the freeze-thaw split residual strength is enhanced by 7.5%; the water immersion Marshall residual stability is enhanced by 2.8%; the low-temperature bending rupture strain is enhanced by 8%; the dynamic stability is enhanced by 19.8%; and the fatigue life under 200 mu-epsilon conditions is enhanced by 26.4%.

Description

Technical field [0001] The invention relates to an inorganic fiber used in asphalt concrete, in particular to a lipophilic mineral composite fiber and a preparation method thereof. Background technique [0002] Fiber Reinforced Concrete (FRC) is the abbreviation of fiber reinforced concrete, usually a cement-based composite material composed of cement paste, mortar or concrete as the matrix and metal fiber, inorganic fiber or organic fiber reinforced material . It is a new type of building material formed by uniformly dispersing short and thin fibers with high tensile strength, high ultimate elongation, high alkali resistance and other good properties in the concrete matrix. Fiber in the concrete limits the occurrence of early concrete cracks and the further expansion of cracks under the action of external forces. In the initial stage of fiber concrete stress, fiber and concrete are stressed together. At this time, concrete is the main bearer of external force. With the continu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B37/00C03C13/06
Inventor 潘殿晖
Owner JIANGSU AOMI BUILDING MATERIALS TECH
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