Fiber surface treatment method

A treatment method and fiber surface technology, which is applied in fiber treatment, fiber type, textiles and papermaking, etc., can solve the problems of poor bonding performance between fiber and resin matrix, achieve large-scale production, good application prospects, and improve mechanical properties. performance effect

Active Publication Date: 2021-07-09
HARBIN INST OF TECH
10 Cites 2 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the interface between the fiber and the resin matrix is ​​poor due to the inertness of the fiber surface, and to pr...
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Method used

Embodiment five: a kind of fiber surface treatment method described in embodiment one, in step 2, described polymer is agarose, methyl cellulose, hyaluronic acid, gelatin, chitosan, elastic Protein-like polypeptide, polyacrylamide, polyvinyl alcohol, sodium polyacrylate, acrylate or one or more compounds. These polymers can form a cross-linked network on the fiber surface, replace the original inert surface of the fiber, increase the surface activity of the fiber, and increase the speci...
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Abstract

The invention provides a fiber surface treatment method, and belongs to the field of fiber surface modification. The method comprises the following steps: placing fibers in a micromolecular surfactant for surface activation, dipping the fibers in a polymer dilute solution, and drying surface moisture after ultrasonic treatment; dipping the fibers in a cross-linking agent for chemical cross-linking to form a layer of polymer cross-linked network structure on the surfaces of the fibers; and placing the fibers in a resin solution, filling the resin solution into the polymer cross-linked network structure through solution replacement, and constructing a cross-linked dual-network structure on the surface of the fibers. Compared with the prior art, the method provided by the invention has the following advantages that the tensile strength of a fiber body is improved while the bonding strength of the fiber and the resin matrix is improved, and the method is simple and beneficial to large-scale production and use.

Application Domain

Technology Topic

Polymer chemistrySurface moisture +5

Image

  • Fiber surface treatment method
  • Fiber surface treatment method
  • Fiber surface treatment method

Examples

  • Experimental program(8)

Example Embodiment

[0023] DETAILED DESCRIPTION OF THE INVENTION A fiber surface treatment method is described in this embodiment, the method comprising the steps of:
[0024] Step 1: The fiber is immersed in 0.1% to 15% small molecular surfactant solution 1 to 120 min, and the small molecule surface activator can form a chemical link to the fiber inert surface, improve the surface of the fiber surface, and activate fiber 1;
[0025] Step 2: Immersion of the activated fiber 1 in a concentration of 1% to 40% polymer solution 1 min ~ 60min, ultrasonic treatment, after drying, the surface is dried to activate the fiber 2;
[0026] Step 3: Immerse the activation fibers 2 in a 0.1% to 60% crosslinker solution, chemically crosslinking, the polymer forms a three-dimensional crosslinked network structure on the surface of the fiber to obtain activated fibers 3;
[0027] Step 4: Immersion the activated fiber 3 in a 0.1% -15% resin solution 1min to 60 min, and fill the resin solution to the polymer cross-linking network structure by solvent replacement, forming a dual network surface, removing the solvent, to obtain activation fiber 4;
[0028] Step 5: Mix the activated fibers 4 with resins and prepared high performance fiber composites.
[0029] The present invention activates the fiber to the small molecule surfactant, forms a polymer cross-linking resin dual crosslinked network in the surface of the fiber, and the high-performance fiber composite material is prepared with resin.

Example Embodiment

[0030] DETAILED DESCRIPTION OF THE INVENTION 2: DETAILED DESCRIPTION OF THE INVENTION A Fiber Surface Treatment Method of FIG. 1, in step one, the fiber is PBO fiber, aramid fiber, carbon fiber, polyester fiber, glass fiber, nylon 66, polyphenylene sulfide One of the fibers, basalt fibers or ultra-high molecular weight polyethylene fibers.

Example Embodiment

[0031] DETAILED DESCRIPTION OF THE INVENTION 3: DETAILED DESCRIPTION OF THE INVENTION A fiber surface treatment method, in step one, the small molecule surface activator is a silane coupling agent, ethylene chloride, adipic chloride, butylene diacyl chloride, C One or more mixed in diachlor chloride, glutaraldehyde or caprolactone. These small molecular surface activators are capable of activating the fiber surface, increasing the fiber surface active group, facilitating the composite of the fibers and the polymer network.
[0032] DETAILED DESCRIPTION OF THE INVENTION 4: DETAILED DESCRIPTION OF THE INVENTION A fiber surface treatment method according to the third embodiment, the silane coupling agent is KH-550, KH-560, KH-570, KH-151, KH-171 or KH-792. One or more compounds. These silane coupling agents can form an amine group on the surface of the fibers to increase the surface energy of the fibers.
[0033] DETAILED DESCRIPTION OF THE INVENTION 5: DETAILED DESCRIPTION OF THE INVENTION A fiber surface treatment method, in step 2, the polymer is agarose, methylcellulose, hyaluronic acid, gelatin, chitosan, elastic protein-like polypeptide , Polyacrylamide, polyvinyl alcohol, sodium polyacrylate, one or more compounds in acrylate. These polymers can form crosslinking networks on the surface of the fibers, replacing the fiber original inert surface, increase the surface activity of the fibers, and increase the specific surface area of ​​the fibers.
[0034] DETAILED DESCRIPTION OF THE INVENTION Six: A fiber surface treatment method according to the fifth embodiment, in step three, the crosslinking agent can form a bridge between the polymer molecular chain, so that the polymer becomes three-dimensional structure structure.
[0035] DESCRIPTION 7: A fiber surface treatment method according to the specific embodiment, in step four, the resin solution is a solution of a thermoplastic resin or a thermosetting resin. These resin solutions can be swollen into the polymer crosslinked network by solvent replacement to form a dual-interular network polymer, and can be combined with the resin to increase the adhesion of the fibers and the resin.
[0036] BEST MODE FOR CARRYING OUT THE INVENTION A Fiber Surface Treatment Method according to FIG 7, wherein the thermoplastic resin is PE-polyethylene, PP-polypropylene, PVC-PVC, PS-Polystyrene, PA-polyamide. , POM-polyoxymethylene, PC-polycarbonate, polyphenylene ether, polysulfone, rubber in one or more compounds.
[0037] BEST MODE FOR CARRYING OUT THE INVENTION Nine: A fiber surface treatment method according to the seventh embodiment, the thermosetting resin is an epoxy resin, a polyester resin, a vinyl ester, a double maleamide, a thermosetting polyimide, a cyanate One or more of the phenolic resin, silicone resin, polybutylene resin, furan resin.
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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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