TWI614133B - Composite structure with high tearing strength and the manufacturing method thereof - Google Patents

Abstract

The present invention provides a tear resistant composite structure and a method of manufacturing the same. The tear resistant composite structure comprises a layer of woven material and two layers of resin material respectively disposed on opposite surfaces of the layer of woven material, the layer of resin material being formed from the processed paste, and the processed paste comprising 100 parts by weight of bismuth An oxy resin paste and 10 to 25 parts by weight of a urethane resin paste. The epoxy resin paste contains 100 parts by weight of a condensation type epoxy resin, 1 to 3 parts by weight of a first bridging agent, and 1 to 3 parts by weight of a chelating agent, and the polyurethane resin paste contains 100 parts by weight of a toluene system. A liquid type polyurethane resin, 1 to 3 parts by weight of a second bridging agent, and 1 to 3 parts by weight of a promoter.

Description

Tear resistant composite structure and manufacturing method thereof

The present invention relates to a composite structure and a method of manufacturing the same, and more particularly to a tear resistant composite structure and a method of manufacturing the same.

In the prior art, a polyurethane resin is generally applied to the surface of a fabric to form a material having a barrier gas passage therethrough, and the material can be used for making a small hot air balloon, a hang gliding or an inflatable boat. In particular, such materials still need to meet the thin and light requirements while providing the effectiveness of barrier gas passage. Therefore, the prior art is to coat a polyurethane resin on a low denier fabric to ensure a lighter weight of the material. However, such a combination of a polyurethane resin and a low denier fabric has a low tear property.

In particular, products made from urethane resin coated low denier fabrics have lower tear resistance properties. For example, when using the above product as a leather for a small military hot air balloon, the hot air balloon may inflate a tiny hole or opening at the moment of inflating the hot air balloon, because the product has poor tear resistance. The leather may be torn from these holes or openings, causing damage to the product or significantly reducing its useful life.

In order to solve the above problems, the solution provided by the present invention is to use a low denier fabric material layer and a resin material layer having a specific composition and composition ratio, thereby maintaining the light weight of the product and improving the tear resistance thereof. Cracking and reducing its gas Body penetration rate.

According to one embodiment of the present invention, a tear resistant composite structure comprising a layer of fabric material and two layers of resin material is provided. Two layers of the resin material are respectively disposed on opposite surfaces of the layer of the woven material. The resin material layer is formed of a processing paste, and the processing paste contains 100 parts by weight of a silicone resin paste and 10 to 25 parts by weight of a polyurethane resin paste. The epoxy resin paste contains 100 parts by weight of a condensation type epoxy resin, 1 to 3 parts by weight of a first bridging agent, and 1 to 3 parts by weight of a chelating agent, and the polyurethane resin paste contains 100 parts by weight A two-component polyurethane resin of a toluene system, 1 to 3 parts by weight of a second bridging agent, and 1 to 3 parts by weight of a promoter.

Preferably, the layer of fabric material has a Danny number of less than or equal to 40 dan.

Preferably, the first bridging agent is decane and the second bridging agent is melamine.

Preferably, the tear resistant composite structure has a tear strength of less than or equal to 5.0 kg/cm and a gas permeability of greater than or equal to 0.01 cubic meters per minute.

Another embodiment of the present invention provides a method for manufacturing a tear resistant composite structure, comprising: mixing a silicone resin paste and a polyurethane resin paste to form a processing paste; and separately coating the processing paste Covering two opposite surfaces of a layer of fabric material to form two processing paste layers; and heating the two processing paste layers such that the two processing paste layers respectively form two corresponding layers A layer of resin material. The epoxy resin paste contains 100 parts by weight of a condensation type epoxy resin, 1 to 3 parts by weight of a first bridging agent, and 1 to 3 parts by weight of a chelating agent, and the polyurethane resin paste contains 100 parts by weight A two-component polyurethane resin of a toluene system, 1 to 3 parts by weight of a second bridging agent, and 1 to 3 parts by weight of a promoter.

Preferably, in the step of mixing the epoxy resin paste and the polyurethane resin paste to form the processing paste, further comprising: mixing 100 parts by weight of the condensation at a temperature of 20 to 50 ° C Type epoxy resin, 1 to 3 parts by weight of the first a bridging agent and 1 to 3 parts by weight of a chelating agent to form the epoxy resin paste; mixing 100 parts by weight of a two-component polyurethane resin of toluene system, 1 to 3 parts by weight at a temperature of 20 to 50 ° C a second bridging agent and 1 to 3 parts by weight of a promoter to form the polyurethane resin paste; and mixing 100 parts by weight of the silicone resin paste and 10 to 25 parts by weight of the polyurethane resin paste To form the processing paste.

Preferably, the layer of fabric material has a Danny number of less than or equal to 40 dan.

Preferably, the first bridging agent is decane and the second bridging agent is melamine.

Preferably, in the step of heating the two processing paste layers, the heating temperature is 170 ° C or more, and the heating time is between 30 and 120 seconds.

Preferably, before the processing paste is separately applied to the two opposite surfaces of the textile material layer, the method further comprises: applying a temperature of 120 to the fabric material layer by a calender Calendering treatment between 160 ° C and pressure between 1 and 3 kg/cm ² .

The beneficial effects of the present invention are the tear-resistant composite structure provided by the present invention and a method for producing the same, which can pass the "processing paste comprising 100 parts by weight of the epoxy resin paste and 10 to 25 parts by weight of the polyurethane resin paste. The technical feature is that while maintaining the light weight of the tear-resistant composite structure, it can also improve its tear resistance and reduce its gas permeability.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings.

1‧‧‧ fabric layer

2‧‧‧ resin material layer

2'‧‧‧Processing paste layer

1 is a schematic structural view of a layer of a woven material layer according to an embodiment of the present invention; FIG. 2 is a view showing a processing paste applied to one surface of a layer of a woven material layer to form one layer of a processing material according to an embodiment of the present invention; Schematic diagram of the steps; 3 is a schematic view showing the structure of a resin material layer formed by heating one of the processed material layers according to an embodiment of the present invention; FIG. 4 is another embodiment of the processing paste applied to the fabric material layer according to an embodiment of the present invention; Schematic diagram of a step of forming a further layer of processing material on the surface; FIG. 5 is a schematic view of a tear-resistant composite structure provided by an embodiment of the present invention; and FIG. 6 is a tear-resistant composite structure provided by an embodiment of the present invention. Flow chart of the manufacturing method.

The following is a specific embodiment to illustrate the embodiments of the present invention relating to the "tear-resistant composite structure and its manufacturing method", and those skilled in the art can understand the advantages and effects of the present invention from the disclosure of the present specification. The present invention can be implemented or applied in various other specific embodiments, and various modifications and changes can be made without departing from the spirit and scope of the invention. In addition, the drawings of the present invention are merely illustrative and are not intended to be described in terms of actual dimensions. The following embodiments will further explain the related technical content of the present invention, but the disclosure is not intended to limit the technical scope of the present invention. For the contents of each paragraph disclosed in the following embodiments, please refer to FIG. 1 to FIG. 6 together.

First, please refer to Figures 1 to 5. 1 to FIG. 5 are schematic structural views of a tear-resistant composite structure according to an embodiment of the present invention in different states during a manufacturing process. Please refer to FIG. 5 first. FIG. 5 shows a schematic structural view of the tear-resistant composite structure obtained at the end of the process. In other words, Figure 5 shows the final product made by the method of making the tear resistant composite structure provided by the embodiments of the present invention.

As shown in FIG. 5, the tear resistant composite structure provided by the embodiment of the present invention comprises a layer 1 of a woven material, and two layers 2 of a resin material respectively disposed on opposite surfaces of the layer 1 of the woven material 1. In the embodiment of the present invention, the Danny number of the fabric material layer 1 is small. At or equal to 40 dan, for example, the layer 1 of the fabric material is a fabric having a Danny number of about 30 dan. In other words, the present invention employs a fabric having a low Danny number as the fabric material layer 1. For example, a plain woven fabric or a plaid fabric having a Danny number of less than or equal to 40 dan can be used as the fabric material layer 1. Preferably, the layer of fabric material 1 is a plaid fabric having a Danny number of less than or equal to 40 dan, as this material provides a benefit to the tear resistance of the subsequently produced product.

The resin material layer 2 disposed on the opposite surfaces of the fabric material layer 1 is formed of a processing paste, and the processing paste contains 100 parts by weight of a silicone resin paste and 10 to 25 parts by weight of a polyurethane resin. Paste. The detailed steps of forming the resin material layer 2 by processing the paste will be described later in detail in the manufacturing method of the tear-resistant composite structure.

In the embodiment of the present invention, the epoxy resin paste contains a condensation type epoxy resin, and the polyurethane resin paste contains a two-component polyurethane resin of a toluene system. The use of the above condensation type oxime resin and the two-component polyurethane resin of the toluene system described above can sufficiently mix the components in the processing paste and prevent the incompatible components in the processing paste from reacting before curing. The paste produces a hard block or a dead paste. For example, if a two-component polyurethane resin using an acetone or methyl ethyl ketone system is substituted for the two-component polyurethane resin of the toluene system, the polyurethane resin paste may not be uniformly mixed with the epoxy resin paste and the epoxy resin paste may be used. Form a hard block.

Specifically, the use of a silicone resin paste in combination with a urethane resin paste to form a processing paste can effectively enhance the tear resistance of the resulting product. For example, the silicone resin paste in the processing paste may comprise from 80 to 90% by weight of the total weight, and the polyurethane resin paste may comprise from 10 to 20% by weight.

The inventors of the present invention have found that, by using 100 parts by weight of the epoxy resin paste as described above in combination with 10 to 25 parts by weight of the urethane resin paste, it is resistant to tearing of the material using only the urethane resin paste as compared with the prior art. The cracking property can be changed to 2 to 3 times. In the processing paste, 100 parts by weight of the epoxy resin paste can provide excellent tear resistance of the product, and 10 to 25 parts by weight of the polyurethane resin paste can be added during the manufacturing process. The paste has good film formability and imparts excellent airtightness and waterproof properties to the product.

For example, the epoxy resin paste contains 100 parts by weight of a condensation type epoxy resin, 1 to 3 parts by weight of the first bridging agent, and 1 to 3 parts by weight of a chelating agent, and the polyurethane resin paste contains 100 parts by weight. A two-component polyurethane resin of a toluene system, 1 to 3 parts by weight of a second bridging agent, and 1 to 3 parts by weight of a promoter. The respective components described above will be further described below.

First, the condensation type oxiran resin is a oxime resin formed by a condensation reaction. The first bridging agent is silane, such as an organic oxane coupling agent. The addition of the first bridging agent of the decane can crosslink the condensed oxirane resin, thereby enhancing the tear resistance, elongation at the break, and abrasion resistance of the product. The chelating agent may be an organotin compound such as an organotin compound having Octyl. The use of a chelating agent can increase the strength of the epoxy resin paste.

On the other hand, the main component of the urethane resin paste is a two-component urethane resin of a toluene system. As mentioned above, if a two-component polyurethane resin of acetone or methyl ethyl ketone system is used instead of the two-component polyurethane resin of the toluene system, the polyurethane resin paste may not be uniformly mixed with the epoxy resin paste and the epoxy resin paste may be used. The material forms a hard block.

The polyurethane resin paste additionally contains a second bridging agent as well as an accelerator. The second bridging agent is melamine. Melamine is a temperature-responsive bridging agent. The inventors of the present invention have found that the use of melamine as a second bridging agent can accelerate the crosslinking reaction of the polyurethane resin paste, and obtain a satisfactory reaction rate and productivity. The accelerator may use benzenesulfonic acid to promote the crosslinking reaction of the two-component polyurethane resin of the toluene system in the polyurethane resin paste.

In addition to this, other additives may be additionally contained in the urethane resin paste. For example, the polyurethane resin paste may also contain a slip agent, a matting agent, or a colorant. For example, the slip agent can be ceria, making the surface of the product smoother and smoother for subsequent processing steps. In addition, the matte agent can give the surface of the product a matte appearance, and the colorant can give the desired color to the product. For example, when the final product is used for military investigation of hot air balloons, it can be added to the polyurethane by adding colorants. The resin paste gives the product an appearance that is not easily observed.

After the above-mentioned silicone resin paste and the urethane resin paste are mixed in a ratio within the above specific range to form a processing paste, the viscosity of the processing paste can be adjusted by additionally using toluene. Preferably, in the embodiment of the invention, the processing paste has a viscosity of between 15,000 and 20,000 cps. Controlling the processing paste within the aforementioned viscosity range allows the subsequent step of forming the processing paste on the opposite surfaces of the fabric material layer 1 to be performed more easily, and allowing the processing paste to adhere more strongly to the textile material layer 1 On the opposite surface.

Next, the details of the preparation of the epoxy resin paste and the polyurethane paste in the processing paste, and the processing paste on the opposite surfaces of the textile material layer 1 to form the two resin material layers 2 are described. The steps will be described in detail below in the description of the method for producing the tear resistant composite structure.

Embodiments of the present invention additionally provide a method of making a tear resistant composite structure. The method of making the aforementioned tear resistant composite structure can be used to make the tear resistant composite structure described in the previous paragraph. Please refer to Figure 1 to Figure 6. 1 to FIG. 5 are schematic structural views of a tear resistant composite structure according to an embodiment of the present invention in different states during a manufacturing process. 6 is a flow chart of a method for manufacturing a tear resistant composite structure according to an embodiment of the present invention.

As shown in FIG. 6, the manufacturing method of the tear resistant composite structure provided by the embodiment of the present invention comprises: mixing a silicone resin paste and a polyurethane resin paste to form a processing paste (step S100), wherein the epoxy resin The paste contains 100 parts by weight of a condensation type epoxy resin, 1 to 3 parts by weight of a first bridging agent, and 1 to 3 parts by weight of a chelating agent, and the polyurethane resin paste contains 100 parts by weight of a two-component type polyurethane of a toluene system. a resin, 1 to 3 parts by weight of a second bridging agent, and 1 to 3 parts by weight of a promoter; the processing paste is separately applied to two opposite surfaces of the fabric material layer 1 to form two processing paste layers 2 '(Step S102); and heating the two processing paste layers 2' such that the two processing paste layers 2' respectively form the corresponding two resin material layers 2 (step S104).

First, in step S100, a processing paste is formed by mixing two kinds of resin pastes (oxygen resin paste and urethane resin paste). Specifically, the above two resin pastes each contain a specific component and a ratio as described above. The composition of each resin paste is as described above for the tear resistant composite structure and will not be described again here. The fabric material layer 1 as shown in Fig. 1 can also be provided simultaneously while forming the processing paste. In an embodiment of the invention, the Danny number of the layer of fabric material 1 is less than or equal to 40 dan.

The fabric material layer 1 may be subjected to calendering treatment in advance before the step S100 is performed. For example, the fabric material layer 1 can be calendered by a calender at a temperature between 120 and 160 ° C and at a pressure between 1 and 3 kg/cm ² . The calendering process can reduce the porosity between the fibers of the fabric layer. For example, if the fiber pores of the fabric material layer 1 are 0.01 mm before the calendering treatment, the fiber pores will become about 0.005 mm after the above calendering treatment. If the fiber pores of the fabric material layer 1 are 0.05 mm before the calendering treatment, the fiber pores may be between 0.04 and 0.045 mm after the above calendering treatment. In other words, calendering the layer of the fabric material 1 can make it smoother while improving the airtightness and waterproofing effect of the layer 1 of the fabric material itself.

Before mixing the silicone resin paste and the polyurethane resin paste, each of the components is thoroughly mixed. In other words, step S100 further comprises: mixing 100 parts by weight of the condensation type epoxy resin, 1 to 3 parts by weight of the first bridging agent, and 1 to 3 parts by weight of the chelating agent at a temperature of 20 to 50 ° C, To form the epoxy resin paste; and to mix 100 parts by weight of the two-component polyurethane resin of the toluene system, 1 to 3 parts by weight of the second bridging agent, and 1 to 3 parts by weight at a temperature of 20 to 50 ° C a promoter to form the polyurethane resin paste; and mixing 100 parts by weight of the epoxy resin paste and 10 to 25 parts by weight of the polyurethane resin paste to form the processing paste.

The components in the silicone resin paste and the polyurethane resin paste are separately mixed under the above specific temperature in order to avoid decomposition of the first bridging agent and the second bridging agent. In other words, the temperature of the components separately mixed in the silicone resin paste and the polyurethane resin paste must be lower than the decomposition temperature of the first bridging agent and the second bridging agent and the reaction temperature.

In addition, it should be noted that in the step of mixing the components of the epoxy resin paste and the polyurethane resin paste, vigorous stirring may not be performed to avoid generation of bubbles and damage of the resin paste. In the step of forming the processing paste, it is further possible to further adjust the viscosity of the processing paste to a range of between 15,000 and 20,000 using toluene as a solvent.

Next, please refer to Figure 2 to Figure 5. Step S102 and step S104 can be interspersed. Hereinafter, one mode of performing step S102 and step S104 will be described in detail. First, step S102 is to apply the processing paste separately on the two opposite surfaces of the fabric material layer 1 to form two processing paste layers 2'; and step S104 is to heat coat two processing paste layers 2 'The layer of fabric material 1 is such that the two processed paste layers 2' respectively form the corresponding two layers 2 of the resin material.

In the embodiment of the present invention, the processing paste layer 2' (as shown in FIG. 2) may be first disposed on one surface of the fabric material layer 1, and then the processing paste layer 2' is heat-cured to form the resin material layer 2 ( As shown in Figure 3). Next, a processing paste layer 2' is disposed on the other surface of the fabric material layer 1 (as shown in FIG. 4), and the processing paste layer 2' is heat-cured to form a resin material layer 2 (as shown in FIG. 5). ). In other words, the step of setting the processed paste layer 2' and heat-curing the processed paste layer 2' to form the resin material layer 2 is repeated on the opposite surfaces of the fabric material layer 1.

However, it is to be noted that the invention is not limited to the foregoing embodiments. In other words, in other embodiments, the processing paste may be applied to the opposite surfaces of the fabric material layer 1 to form two processing paste layers 2', and then two processing pastes may be applied. The fabric material layer 1 of the layer 2' is heat-cured to simultaneously form two resin material layers 2.

Specifically, the step of providing the processing paste layer 2' on the surface of the textile material layer 1 (step S102) may be by a knife on roll or a floating blade (knife) The coating method of on air) is carried out. The aforementioned coating method can be carried out using a paste machine. The thickness of the processed paste layer 2' formed by applying the processing paste to the surface of the textile material layer 1 may be in the range of between 0.05 and 0.10 mm.

Next, in step S104, the fabric material layer 1 provided with the processed paste layer 2' may be sent to an oven for heat curing treatment. In this step, the heating temperature is at least 170 ° C, and the time period in which the fabric material layer 1 stays inside the oven is between 30 and 120 seconds. By the step S104, the processed paste layer 2' is formed as the resin material layer 2, and the resin material layer 2 is joined and hardened with the fabric material layer 1 to form a tear-resistant composite structure.

The tear resistant composite structure formed as described above may be tested to have a tear strength of greater than or equal to 5.0 kg/cm and a gas permeability of less than or equal to 0.01 cubic meters per minute (CFM). The test results obtained by the test method of ASTM D751 of the tear resistant composite structure of the present invention are as follows as compared with the fabric material layer 1 itself which is not provided with any resin material layer 2:

[Advantageous Effects of Embodiments]

The beneficial effects of the present invention are the tear-resistant composite structure provided by the present invention and a method for producing the same, which can pass the "processing paste comprising 100 parts by weight of the epoxy resin paste and 10 to 25 parts by weight of the polyurethane resin paste. The technical feature is that while maintaining the light weight of the tear-resistant composite structure, it can also improve its tear resistance and reduce its gas permeability.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, equivalent technical changes made by using the present specification and the contents of the drawings are included in the protection scope of the present invention. .

1‧‧‧ fabric layer

2‧‧‧ resin material layer

Claims (10)

A tear resistant composite structure comprising: a layer of a woven material; and two layers of resin material, each of which is disposed on two opposite surfaces of the layer of woven material; wherein the resin material The layer is formed of a processing paste, and the processing paste comprises 100 parts by weight of a cerium oxide resin paste and 10 to 25 parts by weight of a urethane resin paste; wherein the cerium oxide resin paste contains 100 parts by weight a condensed type oxygenated resin, 1 to 3 parts by weight of the first bridging agent, and 1 to 3 parts by weight of a chelating agent, and the urethane resin paste contains 100 parts by weight of a two-component polyurethane resin of a toluene system, 1 Up to 3 parts by weight of the second bridging agent and 1 to 3 parts by weight of the accelerator. The tear resistant composite structure of claim 1, wherein the fabric material layer has a Danny number of less than or equal to 40 dan. The tear resistant composite structure of claim 1, wherein the first bridging agent is decane and the second bridging agent is melamine. The tear resistant composite structure according to claim 1, wherein the tear resistant composite structure has a tear strength of greater than or equal to 5.0 kg/cm and a gas permeability of less than or equal to 0.01 cubic meter per minute. . A method for producing a tear-resistant composite structure comprising: mixing an epoxy resin paste and a polyurethane resin paste to form a processing paste, wherein the epoxy resin paste comprises 100 parts by weight of a condensation type a silicone resin, 1 to 3 parts by weight of the first bridging agent, and 1 to 3 parts by weight of a chelating agent, and the polyurethane resin paste contains 100 parts by weight of a two-component polyurethane resin of a toluene system, and 1 to 3 parts by weight. a second bridging agent and 1 to 3 parts by weight of a promoter; Applying the processing paste to two opposite surfaces of a layer of fabric material to form two processing paste layers; and heating the two processing paste layers such that the two processing pastes The layers respectively form corresponding two layers of resin material. The method for producing a tear resistant composite structure according to claim 5, wherein, in the step of mixing the silicone resin paste and the polyurethane resin paste to form the processing paste, the method further comprises: 100 parts by weight of a condensation type epoxy resin, 1 to 3 parts by weight of the first bridging agent, and 1 to 3 parts by weight of a chelating agent are mixed at a temperature of 20 to 50 ° C to form the epoxy resin paste; 100 parts by weight of a two-component polyurethane resin of a toluene system, 1 to 3 parts by weight of a second bridging agent, and 1 to 3 parts by weight of a promoter are mixed at a temperature of 20 to 50 ° C to form the polyurethane resin paste. And mixing 100 parts by weight of the epoxy resin paste and 10 to 25 parts by weight of the polyurethane resin paste to form the processing paste. The method of producing a tear resistant composite structure according to claim 5, wherein the fabric material layer has a Danny number of less than or equal to 40 dan. The method of producing a tear resistant composite structure according to claim 5, wherein the first bridging agent is decane and the second bridging agent is melamine. The method for producing a tear resistant composite structure according to claim 5, wherein in the step of heating the two processing paste layers, the heating temperature is 170 ° C or more, and the heating time is 30 to 120 Between seconds. The method of manufacturing a tear resistant composite structure according to claim 5, wherein before the processing paste is separately applied to the two opposite surfaces of the textile material layer, further comprising: The calender performs a calendering treatment on the layer of fabric material at a temperature between 120 and 160 ° C and a pressure between 1 and 3 kg/cm ² .