KR101323240B1 - Industrial coated fabric, and method for preparing the same - Google Patents

Abstract

The present invention relates to an industrial coating fabric, and a method of manufacturing the same, and more particularly, to an industrial fabric dough, a silicon coating layer formed on one or both sides of the industrial fabric dough, and a silane treated between the industrial fabric dough and the silicone coating layer. The present invention relates to an industrial coating fabric comprising a primer, and a method for producing the same.

Industrial coating fabric of the present invention has the advantage of excellent adhesion of the fabric dough and coating layer does not peel off the coating layer even in high temperature, low temperature, or high humidity environment.

Industrial fabrics, coatings, silicone, silane primer, durable

Description

INDUSTRIAL COATED FABRIC, AND METHOD FOR PREPARING THE SAME

1 is a photograph of peeling test results after the humid environment treatment of the industrial fabric prepared according to Comparative Example 1.

Figure 2 is a peeling test result photograph after the humid environment treatment of the industrial fabric produced according to Comparative Example 2.

Figure 3 is a photograph of peeling test results after the humid environment treatment of the industrial fabric prepared according to Example 1.

Figure 4 is a peeling test result photograph after the humid environment treatment of the industrial fabric prepared according to Example 3.

[Industrial use]

The present invention relates to an industrial coating fabric, and a method for producing the same, and more particularly, to an industrial coating fabric having excellent durability of a silicone coating layer, and a manufacturing method thereof.

BACKGROUND ART [0002]

Generally, the term industrial fabric refers to various fabrics used for the purpose, such as vehicle airbags, protective equipment, civil fabrics, and may also include all fabrics except clothing fabrics.

Among these various industrial fabrics, there are products that require various special treatments on the surface of the fabric depending on the specificity of the use.

For example, products that have a special coating applied to the surface of the fabric to provide effects such as waterproofing, heat dissipation, and air blocking. These industrial fabrics are used as waterproof flooring during construction by waterproof coating on the surface, or as a material for fireproof clothing and fireproof gloves by heat-resistant coating, or as airbags for automobiles by air blocking coating on the fabric. .

For coating the coating on the industrial fabrics, Korean Patent Publication No. 2002-0059911, Korean Patent Publication No. 2000-0041534, Korean Patent Publication No. 1997-0027510, US Patent No. 6,846,004, and US Patent 6,491,980, and the like.

Among these, Korean Patent Laid-Open Publication No. 2002-0059911 describes a method of uniformly applying a silicone coating agent to the surface of a fabric and then curing the coating. Korean Patent Laid-Open Publication No. 2000-0041534 describes a silicone rubber in a synthetic fiber fabric. A method of coating a resin is described, and Korean Patent Publication No. 1997-0027510 discloses a method of increasing the tear strength of a coated fabric by adding a crosslinking agent to a silicone coating agent, and at least US Patent No. 6,846,004. A method of coating a surface of a fabric by dissolving a silicone polymer in one or more volatile solvents is described. US Pat. No. 6,491,980 describes a coating method of applying and drying and curing silicone.

However, the industrial coating fabric coated by these methods can maintain the coating performance without any problems at room temperature, but when exposed to high temperature, low temperature, or humid environment for a long time, the adhesive force between the fabric and the coated surface is weakened, and thus, repeated friction There is a problem that the coating surface is easily peeled off.

 In order to solve this problem, a method of coating a fabric by adding an adhesion promoter to a silicone coating agent has been proposed, but it has an effect of improving the adhesion between the fabric and the coated surface at room temperature, but the lecture of the coated fabric As it changes the degree, it still has the problem that it does not have the performance suitable for the special use of industrial fabrics, and when the long-term exposure to high temperature, low temperature, or high humidity environment, the effect of improving adhesion is insignificant, and the coating surface is also peeled off. Have.

The present invention is to solve the above problems, it is an object of the present invention to provide an industrial coating fabric excellent in adhesion of the silicone coating layer, and a method of manufacturing the same.

The present invention provides an industrial coating fabric comprising an industrial fabric dough, a silicon coating layer formed on one or both sides of the industrial fabric dough, and a silane-based primer treated between the industrial fabric dough and the silicone coating layer. to provide.

The present invention also comprises the steps of treating the silane primer on one or both sides of the industrial fabric dough; And it provides a method for producing an industrial coating fabric comprising the step of forming a silicon coating layer on the surface treated with the silane primer.

Hereinafter, the present invention will be described in more detail.

Currently, there are many examples of coating a silicone coating on a commercial fabric, but the high temperature, low temperature, or high humidity environment has the same problem as described above, and there is no method for solving the problem.

Industrial coating fabric of the present invention comprises an industrial fabric dough, a silicone coating layer formed on one or both sides of the industrial fabric dough, and a silane primer treated between the industrial fabric dough and the silicone coating layer.

The industrial fabric dough may be used as long as it is a general industrial fabric, preferably an industrial fabric used for the purpose of waterproofing, heat dissipation, air blocking.

In the present invention, the industrial fabric dough is preferably an airbag fabric, and more preferably an airbag fabric containing polyamide-based fibers.

The type of polyamide fiber included in the fabric for airbags is not particularly limited, but is preferably a polyamide fiber having strength and foldability suitable for use in fabrics for airbags, and includes nylon 6, nylon 66, and nylon 610. More preferably, it is one or more selected from the group consisting of nylon 46.

The weaving density of the industrial fabric dough, or the fineness of the fibers included in the fabric can be appropriately selected according to the use of the industrial coating fabric within a conventional range, it is not limited to a particular range in the present invention.

In general, the silicone coating layer included in the industrial coating fabric of the present invention is preferably a silicone coating layer widely used in industrial fabrics, and more preferably a coating layer containing a siloxane compound having a Si—O—bond.

In order to exert the excellent coating effect of the silicone coating layer, the thickness of the coating layer is preferably 0.25 to 0.75 mm.

The silane-based primer treated between the industrial fabric dough and the silicone coating layer preferably includes at least one selected from the compounds represented by the following formula (1).

[Formula 1]

Where

R ¹ , R ² , and R ³ are methoxy,

R ⁴ is alkylene having 1 to 2 carbon atoms.

The silane-based primer includes an epoxy group at the end, and the epoxy group has an effect of improving the adhesion between the fabric and the silicone coating layer by chemical bonding force forming a molecular bond between the fabric dough and the silicone coating layer.

In addition, the silane-based primer imparts a sticky property to the surface of the industrial fabric dough, thereby improving the physical adhesion between the industrial fabric dough and the silicone coating layer.

In order to obtain the effect of improving the adhesion of the silicone coating layer of the industrial coating fabric of the present invention, it is preferable that the pick-up amount of the silane primer is 0.1 parts by weight or more based on 100 parts by weight of the industrial fabric dough, and the silane primer is solidified in the form of polysiloxane. In order to prevent the phenomenon from becoming, it is preferable that it is 0.5 weight part or less.

Industrial coating fabric of the present invention is a high temperature environment exposed to more than 300 hours in a high temperature environment of 125 ℃, a low temperature environment exposed to more than 24 hours in a low temperature environment of -40 ℃, a humid environment exposed to more than 24 hours at 85 ℃ 95% humidity conditions , And after undergoing an extreme environment exposed to at least 15 days in an environment where the high temperature, low temperature, and high humidity conditions are circulated, and performing a surface repeated friction test according to the method of ISO 5981, the coating layer may be subjected to repeated The ductility change ratio, which is a relative ratio of the stiffness of the industrial coated fabric to the stiffness of the industrial fabric which does not peel off and does not form a primer coating layer under the same conditions, is 30% or less, more preferably 20% or less.

As described above, the industrial coating fabric of the present invention exhibits coating properties suitable for special applications without any change in the stiffness, which is the basic property of the fabric, and maintains excellent coating adhesion for a long time even in a high temperature, low temperature, or high humidity environment. It has the advantage that the coating surface does not come off by friction.

The industrial coating fabric is a step of treating the silane primer on one or both sides of the industrial fabric dough; And it can be prepared according to the manufacturing method of the industrial coating fabric comprising the step of forming a silicon coating layer on the surface treated with the silane-based primer.

The step of treating the silane primer on one or both sides of the industrial fabric dough is to dissolve a certain amount of silane primer in a solvent to prepare a silane primer solution, then apply it to one surface of the industrial fabric dough, or industrial fabric After immersing the dough in the silane primer solution, it may be dried by volatilizing the solvent.

At this time, the concentration of the silane primer solution is preferably 0.5 to 2.5% by weight, the solvent used in the preparation of the solution is most preferably water.

In addition, the pick-up amount of the silane-based primer remaining in the industrial fabric dough after the drying process is preferably to be 0.1 to 0.5 parts by weight based on 100 parts by weight of the industrial fabric dough, the drying temperature is appropriate to volatilize the solvent The temperature can be selected according to the solvent.

Forming the silicon coating layer on the surface of the industrial fabric treated with the silane-based primer may be performed in the same manner as the conventional method of forming a silicon coating layer. However, it is preferable to carry out knife coating using a solventless type two-component mixed silicone, and the drying temperature of the coating liquid is preferably 120 to 200 ° C.

In addition, since the coating amount of the silicon coating layer, the thickness of the coating layer can be selected in various ways depending on the use of the industrial coating fabric, it is not particularly limited, the coating amount is preferably coated to 20 to 150 gsm, The thickness of the silicon coating layer is preferably coated so as to be 0.25 to 0.75 mm.

Hereinafter, preferred embodiments of the present invention will be described. However, the following examples are only a preferred embodiment of the present invention, and the present invention is not limited by the following examples.

[Example]

Example  One

Industrial fabric dough was prepared using 420 denier nylon 66 multifilament yarns as warp and weft yarns. The dough was woven by an one piece woven weaving method using an air jet loom, the weaving density was 49 weft / inch weft, the slope was 57 / inch.

In addition, after dissolving the silane primer represented by the following formula (2) in water at a concentration of 0.6% by weight to prepare a silane primer solution, and then double-side treatment at 80 ℃ in the fabric dough, dried at 190 ℃ to pick up the silane primer Primers were applied to both sides of the industrial fabric dough so that the amount was 0.1 parts by weight based on 100 parts by weight of dough.

 (2)

After coating the solvent-free type two-component mixed silicone coating agent on both sides of the primer-treated fabric by a knife coating method, and dried at a temperature of 120 to 190 ℃ to form a silicon coating layer of 85 gsm, 0.4 mm thick coating industrial coating fabric Was prepared.

The chemical bond form between the silane primer and the polyamide fabric dough in the industrial coating fabric prepared according to Example 1 is shown in the following formula (3), the chemical bond form between the silane primer and the silicone coating layer is represented by the formula Same as

(3)

[Formula 4]

Example  2

After preparing the silane primer solution by dissolving the silane primer of Formula 2 in water at a concentration of 1.8% by weight, except that the pickup amount of the silane primer was 0.3 parts by weight based on 100 parts by weight of the fabric dough. Industrial coating fabrics were prepared in the same manner as in Example 1.

Example  3

After preparing the silane primer solution by dissolving the silane primer of Formula 2 in water at a concentration of 3.0 wt%, the pick up amount of the silane primer was 0.5 parts by weight based on 100 parts by weight of the fabric dough. Industrial coating fabrics were prepared in the same manner as.

Comparative Example  One

Except that the silane primer was not treated to the industrial fabric dough in the same manner as in Example 1 to form a silicone coating to prepare an industrial coating fabric.

Comparative Example  2

After preparing a silane primer solution by dissolving the silane primer of Formula 2 in water at a concentration of 0.3 wt%, the pick-up amount of the silane primer was adjusted to 0.05 parts by weight based on 100 parts by weight of the fabric dough. Industrial coating fabrics were prepared in the same manner as in Example 1.

Comparative Example  3

After preparing the silane primer solution by dissolving the silane primer of Formula 2 in water at a concentration of 4.8 wt%, the pick-up amount of the silane primer was 0.8 parts by weight based on 100 parts by weight of the fabric dough Industrial coating fabrics were prepared in the same manner as in Example 1.

Comparative Example  4

An industrial coating fabric was manufactured in the same manner as in Example 1, except that the silicone coating agent to which the adhesion promoter was added in place of the silane primer was coated by knife coating on both sides of the industrial fabric.

Industrial coating fabrics prepared according to Examples 1 to 3 and Comparative Examples 1 to 4 were subjected to a high temperature environment (125 ° C., 336 hours), a low temperature environment (-40 ° C., 24 hours), and a high humidity environment (85 ° C., 95%). Humidity, 24 hours), and circulating environment ((90 ° C, 15.5 hours-> -40 ° C, 7.5 hours-> 80 ° C, 95% humidity, 15.5 hours-> -40 ° C, 7.5 hours) x 8 repetitions) After each stand, the surface repeated friction test was performed 2000 times or more by the method according to ISO 5981 to visually observe whether the silicon coating layer was peeled off from the surface of the coated fabric, and the photographs are shown in FIGS. 1 to 4. The presence or absence of peeling is shown in Table 1 below.

Figure 1 is a photograph showing the test results after the humid environment treatment of the industrial fabric prepared according to Comparative Example 1, Figures 2 to 4 are in the industrial fabric prepared according to Comparative Example 2, Example 1, and Example 3, respectively This is a picture showing the test results.

In addition, the stiffness was measured according to the ASTM D 1388 method for the industrial coating fabrics prepared according to Examples 1 to 3, and Comparative Examples 1 to 3, the change rate of the stiffness of the fabric of Comparative Example 1 not subjected to the primer treatment It is summarized in Table 1 below as a relative rate of change with respect to the lecture.

[Table 1]

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 After high temperature treatment
Peel off none none none none none none none After low temperature treatment
Peel off none none none none none none none After humid treatment
Peel off none none none exfoliation exfoliation none none After circulation
Peel off none none none none none none none Lecture Rate
(%) 13.3 20.0 17.8 0 4.4 28.9 80.0

As shown in FIGS. 1 to 4 and Table 1, the industrial coating fabric according to the present invention is excellent in adhesion of the silicone coating layer due to the silane primer treatment, while the change in the ductility is small, the silane primer treatment In the case of Comparative Examples 1 and 4 that are not, or Comparative Examples 2 and 3 outside the treatment range of the present invention, it can be seen that the silicon coating layer is peeled off or the stiffness is severely changed.

 Industrial coating fabric of the present invention has the advantage of excellent adhesion of the fabric dough and coating layer does not peel off the coating layer even in high temperature, low temperature, or high humidity environment.

Claims (9)

Industrial fabric dough, Silicone coating layer formed on one side or both sides of the industrial fabric dough, and Silane primer treated between the industrial fabric dough and the silicone coating layer Including, The silane-based primer is an industrial coating fabric comprising one or more selected from compounds represented by the following formula (1). [Formula 1]

Where R ¹ , R ² , and R ³ are methoxy, R ⁴ is alkylene having 1 to 3 carbon atoms. The method of claim 1, The industrial fabric dough is an industrial coating fabric that is a fabric for airbags. 3. The method of claim 2, The industrial fabric dough is an industrial coating fabric which is a fabric for airbags containing polyamide fibers. delete The method of claim 1, Pick-up amount of the silane-based primer is 0.1 to 0.5 parts by weight based on 100 parts by weight of the industrial fabric dough. The method of claim 1, The silicon coating layer is an industrial coating fabric is coated with a thickness of 0.25 to 0.75 mm. The method according to any one of claims 1 to 3, 5 or 6, The industrial coating fabrics can be used in high temperature environment (125 ° C, 336 hours), low temperature environment (-40 ° C, 24 hours), high humidity environment (85 ° C, 95% humidity, 24 hours), and circulating environment (90 ° C, 15.5 hours). -> -40 ° C, 7.5 hours-> 80 ° C, 95% humidity, 15.5 hours-> -40 ° C, 7.5 hours) × 8 times), and the surface is repeated 2000 times or more by the method according to ISO 5981. An industrial coating fabric in which a silicone coating layer does not peel off from the surface of the coating fabric by performing a friction test. The method according to any one of claims 1 to 3, 5 or 6, The industrial coating fabric is an industrial coating fabric having a change rate of less than 30%, the relative ratio of the stiffness to the stiffness of the industrial fabric that does not form a primer coating layer under the same conditions. Treating the silane-based primer on one or both sides of the industrial fabric dough; And Forming a silicon coating layer on the side treated with the silane-based primer, The silane-based primer is a method for producing an industrial coating fabric comprising at least one selected from the compounds represented by the following formula (1). [Formula 1]

Where R ¹ , R ² , and R ³ are methoxy, R ⁴ is alkylene having 1 to 3 carbon atoms.

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