JPS5996944A - Fiber structure having excellent strength on exfoliation - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fibrous material whose peel strength is improved by graft polymerization treatment of the fibers.

It is known that a synthetic resin film is formed on the surface of a cloth to make it waterproof9, and that paper is attached to it for use as wall material, sliding door paper, etc. However, in order to fill in the product notes,

The combination of 111 pieces of fiber and adhesive or synthetic resin coating material 1 was the limit, and its range of applications was limited. Particularly in the case of fabrics using filament systems, it has been difficult to obtain products with sufficient peel strength, and further improvements have been required.

The present invention improves the above-mentioned drawbacks of the prior art by graft polymerizing a patented monomer to Japanese fibers, and provides a fiber structure with a wide range of applications.

The fibrous structure of the present invention is made of fibers containing active hydrogen. At least one chemical compound selected from the group consisting of N'-methylenebisacrylamide, N,N'-methylenebimethacrylamide, N,N'-methylenebisguethylamide, and triacryloylhexahydrotriazine is graft polymerized. A sheet material selected from rubber or resin coatings, fabrics, and papers is bonded to at least one side of the fabric.

Here, typical fibers containing active hydrogen grapes are:
Examples include polyamide fibres, silk and wool. Also, I11
Fabrics include woven fabrics, knitted fabrics, and non-woven fabrics, and are not limited to those made of a single fiber, but also include blended fabrics, mixed woven fabrics, mixed fabrics, and the like.

Graft polymerization to the fabric fibers may be carried out by pouring into the yarn before forming the fabric, or after forming the fabric. The treatment liquid for graft polymerization contains the monomers described in J, an acid, and a polymerization initiator if necessary.

The concentration of monomer in the treated film is selected depending on the amount of monomer attached to the fiber at any one time, but it is always 0.
．． It is used in an amount of 01 to 15% by weight. In addition, (according to official regulations), the amount of polymerization initiator is 0.1 to 10% relative to the amount of monomer.
It is about % by weight. vil-1: This is for adjusting the pH of the processing solution. Normally, the processing solution is used at a pH of 5.5 or less. After dissolving, adjust the pH of the solution with acid.
can be easily obtained by adjusting.

Graft polymerization involves uniformly applying such a treatment solution to fibers by dipping, impregnating, spraying, etc., and then applying moist heat treatment at 50 to 100°C for about 10 to 60 minutes. This can be achieved by doing.

The bath ratio in the immersion method may be about 1:5 to 1:100.

Examples of acids to be included in the treatment liquid include phosphoric acid, hydrochloric acid, acetic acid, formic acid, oxalic acid, tartaric acid, monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, and the like. For the dipping method, formic acid, monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, sulfuric acid, and hydrochloric acid are preferable, and for the impregnation method, (pogyic acid, acetic acid, monochloroacetic acid, sulfuric acid, and Hanabana are preferable).

Polymerization i3 used as necessary (initiators include ammonium persulfate, potassium persulfate, peroxides such as benzoyl sulfide: ceric ammonium sulfate,
4. Cerium salts such as ceric ammonium nitrate;
4-azobis-4-cyanovaleric acid sodium salt, 4.4
-Azobis-4-cyan TM grass i = ammonium salt,
Examples include water-soluble azo compounds such as 2.2'-azobis(2-acydinopropane) hydrochloride.

Although the grafting rate to the 91 fabric in the second aspect of the present invention is not particularly limited, it is preferably 0.001 to 5%, particularly 0.001% to 5%.
It is preferably about 1 to 2%.

Next, when the sheet-like material is joined to the graft-polymerized fabric, l) the sheet-like material I is attached to the fabric via a grafting agent;
11) A method of bonding suspended sheet materials by heating and pressurizing them through a solvent;
A substance? Learn how to form.

The method 1) is applicable to both pre-manufactured rubber or ballast film fabrics and papers, and the bonding is preferably carried out by heating and pressing.

As synthetic resin films, films such as polyvinyl chloride, polyvinylidene chloride, polyamide, polyester, acrylic resin JJr7, natural rubber, and NBRlSBR are mainly used, and as papers, h/)' 7 hole, kraft paper, etc. It will be put into use.

Examples of thinning agents include one-component or two-component polyurethane, polyamide, polyvinyl chloride, ethylene-hinyl acetate copolymer, chloroprene thread latex, epoxy resin, vinyl acetate emulsion, acrylic handle resin, PVA, and Any normal adhesive agent such as starch can be used depending on the purpose.

One method is suitable for bonding a fabric to a rubber or resin film, where the solvent is used to bond the fabric to the IC-polymerized graft polymer and/or the resin film, especially the resin film. Those that dissolve or swell are preferred, such as dimethylformamide, methyl ethyl ketone, dioxane, niluene, 1-lichloroethylene, methyl inbutyl ketone,
Carbinol etc. are mainly used.

11 methods (principally, synthetic rubber or synthetic resin bath) are applied to the fabric using a conventional coating method to form a resin film directly on the fabric. In adhesion of materials, in addition to chemical bonding force or intermolecular force, physical bonding force can be used to separate two materials.

In the present invention, N,N-methylenebisacrylamide, N
, N'-methylenebismethacrylamide, N, N'-
Despite the relatively large molecular weights of methylenebis-α-ethylamide and 1-liacroylhexahydrotriazine, they have strong 9-polar polarity and are graph l-polymerized with active water-soluble monomers into the fabric fibers. The chemical bonding strength between the fabric and the sheet material is significantly improved without impairing the texture of the fabric.Furthermore, fine irregularities are formed on the fiber surface by graft polymerization, which makes the fabric more attractive. The physical bonding force between the material and the sheet material (or adhesive) is also very strong.

The irregularities on the surface of ta fi + ff1 formed by graft polymerization exhibit the effect of a hook or anchor,
For example, when an adhesive or synthetic resin coating liquid is completely applied to a fabric, the adhesive penetrates into the tissue of the fabric, hardens and takes the form of countless hooks or wood or grass plates within the structure, and the surface of the fibers is hardened. Compatible with the unevenness of the surface. Therefore, in extreme cases, the peel strength necessary to break the adhesive may be obtained without any chemical bonding of the adhesive.

Since the fiber structure of the present invention has extremely excellent peel strength,
Raincoats, leather wear, gloves, tablecloths,
It can be used not only for normal purposes such as diaper covers, shower curtains, umbrellas, shoes, bags, tents, etc., but also for life jackets, rubber bows 1-1, water 11-d, etc. very effectively. Also,. In the present invention, by laminating the fabric with cardboard, it is now possible to manufacture a clothing box that seals the surface of the fabric, which was previously considered difficult.

Next, examples of the present invention will be shown, and the peel strength in the examples was measured according to JIS K 6328-1977. The number 1 is expressed as the average of 1 for 2 test pieces.

Real Kai 1e2su (1) Scouring, heat setting Shida 6-nylon oxford (210d/24fin, weight 1101i'/yy
i, width 112CI++) in a treatment bath containing 1% -N,N'-methylenebisacrylamide and 015% acetic acid, and then squeezed with nip rolls to a pickup rate of 100%.
The treated fabric was steam-treated at 100°C for 1 hour at 60°C2.
After washing in hot water for 0 minutes and then in water, the treated fabric and a 60μ thick polyurethane film (manufactured by Nippon Matai Co., Ltd.) were bonded together using an adhesive (
A mixture of 100 parts of Atcoat 527 and 100 parts of Atcoat 9 L manufactured by Toyo Morton Co., Ltd.) was heated and pressed with a heated roll at 130° C. at a pressure of 5 Icg/cm and bonded together. The peel strength of the product after 24 hours at 60°C and then 2 days at room temperature is 3.4 k
q/2.5 on.

In comparison, 6
- The peel strength of a product made by pasting nylon oxford and polyurethane film using the same method as above is 2. Ok
g/2.5 on.

Example (2) In the same manner as in Example (1), 6-nylon oxford was subjected to graft polymerization treatment, and one side of the treated cloth was coated with 30 parts dimethylformamide 30 parts methyl ethyl ketone 30 parts toluene
A 10 part polyurethane resin solution was applied to a thickness of about 20,097 nods using a knife over roll coater and dried at 80-100°C. The peel strength of this product was 3° Okq/2.5 on.

In comparison, a product in which a polyurethane resin solution was directly applied to 6-nylon oxford in the same manner as described above without graft polymerization had a peel strength of 2.5.
kg/2.5 on.

Example (3) In the same manner as in Example (1), a treated fabric subjected to the Graph 1 polymerization treatment was laminated to cardboard coated with a water-soluble starch paste at a ratio of 201/ytf. The peel strength of the product is 40
It was fl/aJ.

In comparison, a product in which 6-nylon oxford without graft polymerization was laminated to cardboard in the same manner as described above had a peel strength of 15';l/c+#.

Example (4) Scoured and heat-set brushed nylon (diameter 40 d/
10 fi6. i Wei 20A Serataru thread, 1 with FA
151/y) 21 width 100 cln), N1N'-
Immerse in a treatment bath containing methylene bisacrylamide (20% of fiber weight), ammonium persulfate (N,N'-methylene bisacrylamide part 2), and formic acid (adjust the pH of the bath to 2), then gradually add the treatment bath. The temperature was raised to 80°C in 20 minutes. After treatment at 80°C for 30 minutes with occasional stirring, washing with hot water at 60°C for 20 minutes, followed by washing with water for 20 minutes/ζ.

50 parts of Crisbon 4216 (manufactured by Inu Nippon Kagaku Kogyo Co., Ltd.) was applied to one side of the treated cloth thus obtained.
An adhesive consisting of 4.070 () 50 parts rt CL-2 () 10 parts toluene 15 parts was applied with a doctor knife at a ratio of about 701/yn' and dried at 70°C for 1 minute and at 120°C for 1 minute. .

Thereafter, within 24 hours, a polyvinyl chloride film with a thickness of 8μ was placed on this adhesive layer, and a 5kg film was placed at 150°C.
A polyvinyl chloride film was bonded onto the nylon base fabric by heating and pressing with / C1#.

The peel strength of the product was 3.3 kg/2.5 on.

In comparison, a product in which the adhesive was directly applied to brushed nylon that did not undergo graft polymerization and a polyvinyl chloride film was bonded thereto had a peel strength of 2.3 kq/2.5 cm.

Patent applicant Kanebo Co., Ltd. Agent Kenbe Niimi (11 people in the evening)

Claims (3)

[Claims] (1) A fabric made of fibers having active hydrogen, wherein the MM m is N,N-methylenebisacrylamide, N,,N'-methylenebimethacrylamide, N1N
'-Methylenebis-α-ethylamide21)')! At least one side of the fabric is polymerized with at least one monomer selected from the group consisting of J Acroy/L//\xahydrotriazine. A fiber structure with excellent peel strength characterized by bonded substances. (2) Claim 1, in which a sheet-like material is bonded to a graft-polymerized fabric via an adhesive.
Fiber structure as described in the text. (3) The fibrous material according to item 1, wherein a rubber or resin film is bonded to the fabric.