TWI618827B - Composite reinforced fabric and preparation method thereof - Google Patents

Abstract

The present invention relates to a composite reinforced fabric comprising a high- and low-hardness thermoplastic elastomer yarn having a surface that is micro-melted to adhere to the surface of the high-hardness thermoplastic elastomer yarn. The method for preparing a composite reinforced fabric comprises: woven a high-hardness thermoplastic elastomer yarn and a low-hardness thermoplastic elastomer yarn into a fabric having a melting point of 50 ° C to 150 ° C; The fabric is heat-pressed at a hot pressing temperature to obtain a composite reinforced fabric having a hot pressing temperature greater than or equal to the melting point of the low-hardness thermoplastic elastomer yarn and less than the melting point of the high-hardness thermoplastic elastomer yarn. By the above technical means, a composite reinforced fabric having strong tensile strength and high impact strength can be obtained in a relatively simple and environmentally friendly process.

Description

Composite reinforced fabric and preparation method thereof

The invention is applied to the field of textile technology, in particular to a method for preparing a composite reinforced fabric and a composite reinforced fabric.

In recent years, due to advances in technology, there has been an increasing demand for functional textiles, which have different characteristics depending on the application. In the case of high-strength textiles, the strength can generally be increased by the addition of a strengthening treatment agent or a technique of film processing.

The addition of a strengthening treatment agent is a widely used method in which a fabric is immersed in a processing solution containing a strengthening treatment agent to adhere a layer of a polymer to the surface of the fabric, thereby increasing the strength of the fabric.

However, in order to maintain the hand of the fabric, it is necessary to limit the addition amount of the reinforcing treatment agent (for example, a tear strength enhancer, a rubbing fastness improver or a fabric hardness enhancer) to less than 5%, resulting in a limited effect of improving the strength of the fabric. Moreover, the use of the strengthening treatment agent to increase the strength of the fabric needs to be subjected to impregnation processing and drying treatment, resulting in complicated process, high processing time and high cost; and a large amount of water and solvent is used in the process, which is easy to load on the environment, and is not suitable for a large amount. Production of reinforced fabrics.

Since the above method has limited improvement on the strength of the fabric, the prior art further provides a technique for film processing, which applies a hot melt adhesive solution on the surface of the fabric, and then coats the surface of the fabric coated with the hot melt adhesive solution with a reinforced film. A laminate structure is formed, and the laminate structure is further heat-pressed at a hot pressing temperature of 200 ° C to 300 ° C to finally obtain a reinforced fabric.

However, the hot melt adhesive layer ages over time, and there is a problem that the reinforcing film peels off from the fabric after a long period of use, thereby losing the advantage of high strength. In addition, the hot melt adhesive solution contains The solvent is used to form the reinforced fabric in this way, and there is a concern that the solvent remains on the reinforced fabric, so that the usability of the reinforced fabric is limited.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a processing technique that is different from the prior art, thereby solving the problems of conventional reinforced film peeling and the like, while simplifying the process complexity of the prior art reinforced fabric.

In order to achieve the foregoing object, the present invention provides a method for producing a composite reinforced fabric comprising: woven a high hardness thermoplastic elastomer yarn and a low hardness thermoplastic elastomer yarn into a fabric having a melting point of the low hardness thermoplastic elastomer yarn The temperature is from 50 ° C to 150 ° C; at a hot pressing temperature (less than 200 ° C), the fabric is hot pressed to obtain a composite reinforced fabric having a hot pressing temperature greater than or equal to the melting point of the low hardness thermoplastic elastomer yarn and Less than the melting point of the high hardness thermoplastic elastomer yarn.

The invention uses two thermoplastic elastomer yarns of different hardness or melting point to make a fabric, and then heat-pressing the fabric under appropriate temperature conditions, so that the surface of the low-hardness thermoplastic elastomer yarn is micro-melted and adhered to A surface of the high hardness thermoplastic elastomer yarn is thereby obtained as a composite reinforced fabric. The above technical means can achieve the effect of improving the tensile strength and impact strength of the fabric without using the hot melt adhesive solution, so the invention can not only overcome the reinforced film of the prior art due to the aging of the hot melt adhesive layer. The problem of peeling off on the fabric and the solvent remaining on the fabric to limit its usability, and the like, can further simplify the process of the composite reinforced fabric.

Preferably, the hot pressing pressure is from 0.1 kgf/cm ² to 10 kgf/cm ² .

In the above method for producing a composite reinforced fabric, the difference between the hot pressing temperature and the melting point of the low-hardness thermoplastic elastomer yarn is from 10 ° C to 50 ° C. Preferably, the hot pressing temperature and the low hardness thermoplastic The difference in melting point of the elastomeric yarn is from 10 ° C to 20 ° C. Accordingly, the present invention can perform a hot pressing process at a temperature lower than 200 ° C, and achieve the purpose of micro-melting the low-hardness thermoplastic elastomer yarn, so that a composite reinforced fabric can be obtained at a lower hot pressing temperature. .

According to the present invention, the hot pressing temperature set in the process can be adjusted depending on the melting point of the low hardness thermoplastic elastomer yarn and the high hardness thermoplastic elastomer yarn. Preferably, the low hardness thermoplastic elastomer yarn has a melting point of 50 ° C to 150 ° C; preferably, the low hardness thermoplastic elastomer yarn has a melting point of 70 ° C to 150 ° C; accordingly, the method of the present invention can be A composite reinforced fabric is produced at a lower processing temperature. Further, the high hardness thermoplastic elastomer yarn has a melting point of from 150 ° C to 300 ° C; preferably, the high hardness thermoplastic elastomer yarn has a melting point of from 160 ° C to 300 ° C; more preferably, the high hardness thermoplastic elastomer The melting point of the yarn is from 180 ° C to 250 ° C.

Preferably, the low hardness thermoplastic elastomer yarn has a Shore hardness of 10A to 90A, and the high hardness thermoplastic elastomer yarn has a Shore hardness of 95A to 90D.

Further, in the method of the present invention, the step of woven the high-hardness thermoplastic elastomer yarn and the low-hardness thermoplastic elastomer yarn into the fabric comprises: combining a high-hardness thermoplastic elastomer fiber with a reinforcing fiber. And producing the high hardness thermoplastic elastomer yarn; and weaving the high hardness thermoplastic elastomer yarn and the low hardness thermoplastic elastomer yarn into the fabric.

The step of combining the high-hardness thermoplastic elastomer fiber and the reinforced fiber into a high-hardness thermoplastic elastomer yarn can make the high-hardness thermoplastic elastomer yarn have the characteristics of reinforcing fiber and can increase the application of the composite reinforced fabric. The tensile strength and impact strength of the high hardness thermoplastic elastomer yarn can also be increased.

Preferably, the reinforcing fiber is carbon fiber, glass fiber, rayon, Kevlar fiber or Dyneema fiber, and the reinforcing fiber accounts for 10% by weight to 90% by weight of the high hardness thermoplastic elastomer yarn.

According to the method for producing a composite reinforced fabric of the present invention, the step of woven the high-hardness thermoplastic elastomer yarn and the low-hardness thermoplastic elastomer yarn into the woven fabric comprises: forming the high hardness using a high-hardness thermoplastic elastomer polymer. a thermoplastic elastomer yarn, and the low-hardness thermoplastic elastomer yarn is used to form the low-hardness thermoplastic elastomer yarn, and the high-hardness thermoplastic elastomer yarn and the low-hardness thermoplastic elastomer yarn are woven into the fabric; The high hardness thermoplastic elastomer polymer may be a thermoplastic rubber elastomer (TPR), a thermoplastic polyurethane elastomer (TPU), a styrene-base thermoplastic elastomer (TPS), Thermoplastic olefinic elastomer (TPO), thermoplastic vulcanizate elastomer (TPV), thermoplastic polyether ester elastomer (TPEE) or thermoplastic polyamine Elastomer (thermoplastic polyamide elastom Er, TPAE); and the low hardness thermoplastic elastomer polymer may also be a thermoplastic rubber elastomer, a thermoplastic polyurethane elastomer, a thermoplastic styrene elastomer, a thermoplastic polyolefin elastomer, a dynamically vulcanized thermoplastic polyolefin elastomer, and a thermoplastic A polyether ester elastomer or a thermoplastic polyamide polymer.

Preferably, the type of the high hardness thermoplastic elastomer polymer is the same as the type of the low hardness thermoplastic elastomer polymer. When the high- and low-hardness thermoplastic elastomer yarns are drawn from high-strength, low-hardness thermoplastic elastomer polymers of the same material type, the high- and low-hardness thermoplastic elastomer yarns may be similar in polarity and structure. It has better affinity, which leads to better bonding effect, thereby further improving the tensile strength and impact strength of the composite reinforced fabric.

The thermoplastic elastomer polymer is composed of a rubber component (also referred to as a soft segment) and a plastic component (also referred to as a hard segment), and the thermoplastic elastomer polymer has physical properties such as hardness and melting point. It can be adjusted according to the structure or proportion of the soft segment and the hard segment.

According to the present invention, the soft segment of the above thermoplastic elastomer polymer may be selectively selected from butadiene rubber (BR), isoprene rubber (IR), natural rubber (NR). ), ethylene propylene diene monomer (EPDM), butyl rubber (also known as isobutylene isoprene rubber, IIR), polyisobutylene (PIB), polyethylene/polybutylene, amorphous Polyethylene, polyether polyol, polyester polyol or polyester; and the hard segment of the thermoplastic elastomer polymer can be selectively made of polystyrene (PS) ), polyethylene (PE), polypropylene (PP), syndiotactic polymerization 1,2 polybutadiene, trans 1,4 polyisoprene, polyurethane (PU), diisocyanate ( Diisocyanate) or polyamine (PA).

In addition, in the TPEE system, the soft segment of the polyester polyether TPEE can be synthesized by polyether, while the hard segment can be synthesized by aromatic crystalline polyester; in the soft segment of polyester polyester TPEE can be fat The polyester is synthesized, and the hard segment can be synthesized from an aromatic crystalline polyester.

Preferably, the high-hardness thermoplastic elastomer polymer and the low-hardness thermoplastic elastomer polymer each comprise a soft segment and a hard segment, and the ratio of the soft segment of the high-hardness thermoplastic elastomer polymer to the hard segment is 25 : 75 to 50:50, the ratio of the soft segment of the low-hardness thermoplastic elastomer polymer to the hard segment is 51:49 to 80:20.

Preferably, the high hardness thermoplastic elastomer polymer and the low hardness thermoplastic elastomer polymer are thermoplastic polyurethane elastomers, and the high hardness thermoplastic elastomer polymer and the low hardness thermoplastic elastomer polymer each contain a soft material. Segment and a hard segment, the high hardness thermoplastic elasticity The ratio of the soft segment to the hard segment in the bulk polymer is from 30:70 to 50:50, and the ratio of the soft segment to the hard segment in the low hardness thermoplastic elastomer polymer is from 56:44 to 70:30.

Preferably, the high hardness thermoplastic elastomer polymer and the low hardness thermoplastic elastomer polymer are thermoplastic polyether ester elastomers, and the high hardness thermoplastic elastomer polymer and the low hardness thermoplastic elastomer polymer each contain a soft segment and a hard segment, wherein the ratio of the soft segment to the hard segment in the high hardness thermoplastic elastomer polymer is from 30:70 to 40:60, and the soft segment of the low hardness thermoplastic elastomer polymer is relative to the hard segment The ratio is 52:48 to 75:25.

Preferably, the high hardness thermoplastic elastomer polymer and the low hardness thermoplastic elastomer polymer are thermoplastic polyolefin elastomers, and the high hardness thermoplastic elastomer polymer and the low hardness thermoplastic elastomer polymer each contain a soft segment and a hard segment, wherein the ratio of the soft segment to the hard segment in the high hardness thermoplastic elastomer polymer is from 30:70 to 40:60, and the soft segment of the low hardness thermoplastic elastomer polymer is relative to the hard segment The ratio is 55:45 to 75:25.

The invention can use the circular knitting, knitting, woven, plain weaving, knitting and shuttle weaving interaction, plain weave, rib weave or corrugated weaving to make the high and low hardness thermoplastic elastomer yarn into a fabric, but the weaving is used. Technology is not limited to this.

Further, the present invention further provides a composite reinforced fabric obtained by the above process, the composite reinforced fabric comprising a high hardness thermoplastic elastomer yarn and a low hardness thermoplastic elastomer yarn, the low hardness thermoplastic elastomer yarn The surface is micro-fused and adhered to the surface of the high-hardness thermoplastic elastomer yarn.

In summary, the composite reinforced fabric of the present invention and its preparation method have the following advantages:

(1) High-strength mechanical properties:

By using high-temperature and low-hardness thermoplastic elastomer yarns, the creation has been subjected to hot pressing and cooling to obtain a composite reinforced fabric with high tensile strength and high impact strength.

(2) Simple process and environmental protection:

The preparation method of the composite reinforced fabric of the invention can eliminate the steps of adding the strengthening treatment agent or the tempering film by using the hot melt adhesive solution in the prior art, so the preparation method of the invention has the advantages of being more convenient and environmentally friendly than the method of the prior art.

(3) Low processing temperature:

By controlling the melting point of the high and low hardness thermoplastic elastomer yarns, the process of the present invention can control the hot pressing temperature correspondingly, and the composite reinforced fabric can be smoothly produced at a lower processing temperature.

1A‧‧‧fabric

1B‧‧‧ fabric

2‧‧‧High hardness thermoplastic elastomer yarn

3‧‧‧Low hardness thermoplastic elastomer yarn

Figure 1 is a schematic view of a woven fabric having a high and low hardness thermoplastic elastomer yarn ratio of 1:1.

Figure 2 is a schematic view of a woven fabric having a 2:1 ratio of high and low hardness thermoplastic elastomer yarns.

In order to prove that the composite reinforced fabric of the present invention has high tensile strength and high impact strength, the following materials and preparation manners of several composite reinforced fabrics are provided to illustrate the embodiments of the present invention; those skilled in the art can use the present specification. The contents of the present invention are susceptible to the advantages and effects of the present invention, and various modifications and changes can be made without departing from the spirit of the present invention.

Example 1

In the first embodiment, a thermoplastic polyurethane (TPU) polymer is used as a raw material, wherein a raw material has a soft segment of a polyol and a diisocyanate as a hard segment, and the ratio of the soft segment of the raw material to the hard segment is 44: 56. A high-hardness thermoplastic elastomer yarn (150D/72F) was produced by spinning the raw material, and the high-hardness thermoplastic elastomer yarn had a Shore hardness of 95 A and a melting point of 190 °C. In addition, another raw material uses a polyol as a soft segment and a diisocyanate as a hard segment, and the soft segment of the raw material is relatively The ratio of the hard segment is 65:35, and the raw material is drawn to form a low-hardness thermoplastic elastomer yarn (150D/72F) having a Shore hardness of 80A and a melting point of 100 °C. .

Next, the high- and low-hardness thermoplastic elastomer yarns were woven into a fabric having a size of 21 cm × 30 cm at a ratio of 1:1, and the fabric structure was as shown in Fig. 1.

As shown in Fig. 1, the fabric 1A comprises a high-hardness thermoplastic elastomer yarn 2 and a low-hardness thermoplastic elastomer yarn 3 made of a 1:1 high-hardness thermoplastic elastomer yarn 2 and a low-hardness thermoplastic elastomer. The body yarn 3 is composed of a 1:1 high hardness thermoplastic elastomer yarn 2 and a low hardness thermoplastic elastomer yarn 3, that is, a high hardness thermoplastic elastomer yarn in the longitudinal direction of the fabric 1A. 2 is interlaced with a low-hardness thermoplastic elastomer yarn 3, and its transverse direction is formed by staggering a high-hardness thermoplastic elastomer yarn 2 and a low-hardness thermoplastic elastomer yarn 3.

Next, the fabric 1A was preheated at 100 ° C for half an hour, and then hot pressed at 110 ° C under a pressure of 1 kgf / cm ² for 3 minutes, and after being lowered to room temperature, a composite reinforced fabric was obtained.

Example 2

In the second embodiment, a thermoplastic polyurethane (TPU) polymer is used as a raw material, wherein a raw material is a soft segment of a polyol, and a diisocyanate is a hard segment. The ratio of the soft segment of the raw material to the hard segment is 44:56, and the raw material is extracted. The yarn was made into a high hardness thermoplastic elastomer yarn (150D/72F) having a Shore hardness of 95 A and a melting point of 190 °C. In addition, another raw material uses a polyol as a soft segment and a diisocyanate as a hard segment. The ratio of the soft segment of the raw material to the hard segment is 65:35, and the raw material is drawn to form a low-hardness thermoplastic elastomer yarn ( 150D/72F), the low hardness thermoplastic elastomer yarn has a Shore hardness of 80 A and a melting point of 100 °C.

Next, using the above-mentioned high- and low-hardness thermoplastic elastomer yarn, a fabric having a size of 21 cm × 30 cm was woven in a 2:1 interlacing ratio, and the fabric was as shown in Fig. 2 .

As shown in Fig. 2, the fabric 1B comprises a high-hardness thermoplastic elastomer yarn 2 and a low-hardness thermoplastic elastomer yarn 3 composed of a 2:1 high-hardness thermoplastic elastomer yarn 2 and a low-hardness thermoplastic elastomer. The body yarn 3 is composed of a 2:1 high hardness thermoplastic elastomer yarn 2 and a low hardness thermoplastic elastomer yarn 3, that is, two high hardness thermoplastic elastomer yarns in the longitudinal direction of the fabric 1B. 2 is repeated with a low-hardness thermoplastic elastomer yarn 3, and the transverse direction is formed by repeating the two high-hardness thermoplastic elastomer yarns 2 and one low-hardness thermoplastic elastomer yarn 3.

Next, the fabric 1B was preheated at 100 ° C for half an hour, and then hot pressed at 110 ° C under a pressure of 1 kgf / cm ² for 3 minutes, and after being lowered to room temperature, a composite reinforced fabric was obtained.

Example 3

In the third embodiment, a thermoplastic polyester polyether elastomer (TPEE) polymer is used as a raw material, wherein one of the raw materials is an aliphatic polyester as a soft segment, and an aromatic crystalline polyester is a hard segment, and the soft segment of the raw material is relatively hard. The ratio of the segments was 37:63, and the high-hardness thermoplastic elastomer yarn (150D/72F) was obtained by spinning the raw material. The high-hardness thermoplastic elastomer yarn had a Shore hardness of 72D and a melting point of 220 °C. In addition, the other raw material is a soft segment of the aliphatic polyester, and the aromatic crystalline polyester is a hard segment, and the ratio of the soft segment of the raw material to the hard segment is 62:38, and the raw material is drawn to obtain a low hardness. Thermoplastic elastomer yarn (150D/72F) having a Shore hardness of 30D and a melting point of 150 °C.

Next, the high- and low-hardness thermoplastic elastomer yarn was woven into a fabric having a size of 21 cm × 30 cm at a ratio of 1:1, and the woven fabric structure was as shown in Example 1.

The fabric 1A was preheated at 150 ° C for half an hour, and then hot pressed at 170 ° C under a pressure of 1 kgf / cm ² for 3 minutes. After being lowered to room temperature, a composite reinforced fabric was formed.

Example 4

In the fourth embodiment, a thermoplastic polyolefin elastomer (TPO) polymer is used as a raw material, and one of the raw materials is a soft segment of EPDM and a soft segment of a polypropylene (PP) segment, and the soft segment of the raw material is used. The ratio of the hard segment is 35:65, and the raw material is drawn to form a high-hardness thermoplastic elastomer yarn (150D/72F) having a Shore hardness of 75D and a melting point of 160 ° C. . In addition, the other raw material uses EPDM rubber as the soft segment and the polypropylene segment as the hard segment. The ratio of the soft segment of the raw material to the hard segment is 68:32, and the raw material is drawn to make the low hardness thermoplastic. Elastomeric yarn (150D/72F) having a Shore hardness of 56A and a melting point of 70 °C.

Next, the high- and low-hardness thermoplastic elastomer yarn was woven into a fabric having a size of 21 cm × 30 cm at a ratio of 1:1, and the woven fabric structure was as shown in Example 1.

The fabric 1A was preheated at 70 ° C for half an hour, and then hot pressed at 100 ° C under a pressure of 1 kgf / cm ² for 3 minutes. After being lowered to room temperature, a composite reinforced fabric was formed.

Example 5

In Example 5, the raw materials of the same manner as in Example 1 were used, and the high-hardness thermoplastic elastomer fibers (75D/36F) and the low-hardness thermoplastic elastomer yarns (150D/72F) were separately drawn. The main difference between Example 5 and Example 1 is that Example 5 has the same Danny number and count of high hardness thermoplastic elastomer fibers (75D/36F) and polyethylene terephthalate (PET). Fiber (75D/36F) is combined into a high-hardness thermoplastic elastomer yarn (150D/72F), and then woven with high-hardness thermoplastic elastomer yarn and low-hardness thermoplastic elastomer yarn in a ratio of 1:1. The fabric having a size of 21 cm × 30 cm was also constructed as in Example 1. Finally, the fabric was combined with the operation of Example 1 to obtain a composite reinforced fabric.

Example 6

In the embodiment 6, the raw material of the same manner as in the first embodiment was used, and the high-hardness thermoplastic elastomer yarn and the low-hardness thermoplastic elastomer yarn were separately drawn. The main difference between Example 6 and Example 1 is that Example 6 is woven by a high-hardness thermoplastic elastomer yarn and a low-hardness thermoplastic elastomer yarn in a 1:1 interlacing manner in a knitting manner well known in the art. 21 cm x 30 cm of fabric; finally, the fabric was heat pressed in the manner described in Example 1 to obtain a composite reinforced fabric.

Example 7

Example 7 was prepared using the same material as in Example 5, and in the same manner as the high hardness thermoplastic elastomer yarn and the low hardness thermoplastic elastomer yarn. The main difference between Example 7 and Example 5 is that Example 7 is woven into a high-hardness thermoplastic elastomer yarn and a low-hardness thermoplastic elastomer yarn at a ratio of 1:1 by a knitting method well known in the art. A fabric of 21 cm x 30 cm; finally, the fabric was heat-pressed in the manner described in Example 5, and a composite reinforced fabric was obtained.

Example 8

Example 8 The same raw material as in Example 1 was used, and a high-hardness thermoplastic elastomer yarn was produced in the same manner. The difference between Example 8 and Example 1 is that the low-hardness thermoplastic elastomer yarn of Example 8 is made of a thermoplastic polyolefin elastomer (TPO) polymer, wherein the raw material is EPDM rubber as a soft segment. The polypropylene segment is a hard segment, and the ratio of the soft segment of the raw material to the hard segment is 68:32, and the raw material is drawn to form a low-hardness thermoplastic elastomer yarn (150D/72F), the low hardness thermoplastic The elastomer yarn had a Shore hardness of 56 A and a melting point of 70 °C.

Next, the high- and low-hardness thermoplastic elastomer yarns were woven into a fabric having a size of 21 cm × 30 cm at a ratio of 1:1, and the fabric structure was as shown in Fig. 1.

The fabric 1A was preheated at 70 ° C for half an hour, and then hot pressed at 100 ° C under a pressure of 1 kgf / cm ² for 3 minutes, and after being lowered to room temperature, a composite reinforced fabric was obtained.

Comparative example 1

Comparative Example 1 The same raw material as in Example 1 was used, and a high-hardness thermoplastic elastomer yarn was produced in the same manner. Comparative Example 1 differs from Example 1 in that Comparative Example 1 is a woven fabric of a size of 21 cm × 30 cm in a 1:1 interlacing ratio of the above two high-hardness thermoplastic elastomer yarns. Figure 1 shows.

Next, the fabric 1A is preheated at 100 ° C for half an hour, and then hot pressed at 110 ° C for 1 minute at a pressure of 1 kgf / cm ² , and the above two high hardness thermoplastic elastomer yarns are to be lowered to room temperature. The line remains in its original state, and its appearance does not change significantly before and after hot pressing.

Comparative example 2

Comparative Example 2 used the same material as in Example 1 and was formed into a high-hardness thermoplastic elastomer yarn in the same manner. The difference between Comparative Example 2 and Example 1 is that Comparative Example 2 is a woven fabric of a size of 21 cm × 30 cm in a 1:1 interlacing ratio of the above two high-hardness thermoplastic elastomer yarns. Figure 1 shows. Another difference between Comparative Example 2 and Example 1 is that the fabric 1A is preheated at 190 ° C for half an hour, and then hot pressed at 230 ° C for 1 minute at a pressure of 1 kgf / cm ² , at which time the above two are the same. The high-hardness thermoplastic elastomer yarns melt and lose the original fabric form, forming a structure of a TPU polymer. Therefore, the use of two thermoplastic elastomer yarns of the same hardness loses the form and feel of the fabric after the hot pressing treatment, and is different from the composite reinforced fabrics produced in the above Examples 1 to 8.

Characteristic analysis

In order to facilitate clarification of the difference in the process conditions of Examples 1 to 8, the thermoplastic elastomer polymer of the high hardness thermoplastic elastomer yarn and the low hardness thermoplastic elastomer yarn used in the composite reinforcing fabrics of the above Examples 1 to 8 The ratio of the raw material, the soft segment to the hard segment, the Shore hardness and the melting point of the yarn are summarized in Table 1 below.

In order to evaluate the mechanical properties of the composite reinforced fabric, the present invention measures the tensile strength of the composite fabric after hot pressing and the composite tempered fabric after hot pressing according to the ASTM-D142 method specified by the American Society for Testing and Materials (ASTM); The impact strength of the composite reinforced fabric after hot pressing and the hot pressing was measured according to the ASTM-D256 method. In order to facilitate the comparison of the process conditions of Examples 1 to 7, the ratios of the high and low hardness thermoplastic elastomer yarns used in Examples 1 to 8, the preheating temperature, the hot pressing temperature conditions, and the fabric before hot pressing and the hot pressing. The measurement results of the composite reinforced fabric are listed in Table 2 below.

As shown in Table 1 above, in order to form a composite reinforced fabric after hot pressing of the high and low hardness thermoplastic elastomer yarns, Examples 1 to 8 control the soft segment of the thermoplastic elastomer polymer relative to the hard segment. A thermoplastic elastomer yarn having a ratio of hardness and melting point.

A composite reinforced fabric having high tensile strength and high impact strength can be produced by using thermoplastic elastomer yarns having different hardnesses and melting points, as can be seen from Examples 1 to 8 in Table 2, compared to fabrics before hot pressing. The tensile strength and impact strength test results show that the tensile strength and the high impact strength of the composite reinforced fabric after hot pressing have a significant improvement effect.

Further, in order to obtain a high compatibility between the high and low hardness thermoplastic elastomer yarns, the raw material types of the high hardness thermoplastic elastomer polymers of Examples 1 to 7 are each lower than those of Examples 1 to 7. The hardness of the thermoplastic elastomer polymer is the same as the raw material.

Specifically, from the results shown in Examples 1, 2, and 5 to 8 in Table 1, it is understood that when the material of the thermoplastic elastomer polymer selected is TPU, the ratio of the soft segment to the hard segment in the TPU is controlled. From 56:44 to 70:30, the drawn low hardness thermoplastic elastomer yarn has a Shore hardness of 10A to 90A and a melting point of 50 ° C to 150 ° C; on the other hand, by controlling the soft segment of the TPU The ratio of the hard segments is from 30:70 to 50:50, and the drawn high hardness thermoplastic elastomer yarn has a Shore hardness of 95A to 90D and a melting point of 170 ° C to 300 ° C.

In addition, from the results shown in Example 3 of Table 1, it can be seen that when the material of the thermoplastic elastomer polymer selected is TPEE, the ratio of the soft segment to the hard segment in the TPEE is controlled from 52:48 to 75:25. The drawn low hardness thermoplastic elastomer yarn has a Shore hardness of 30D to 60D and a melting point of 100 ° C to 180 ° C; on the other hand, by controlling the ratio of the soft segment to the hard segment in the TPEE is 30 From 70 to 40:60, the drawn high hardness thermoplastic elastomer yarn has a Shore hardness of 65D to 80D and a melting point of 185 ° C to 280 ° C.

Further, from the results shown in Examples 4 and 8 in Table 1, it is understood that when the material of the thermoplastic elastomer polymer selected is TPO, the ratio of the soft segment to the hard segment in the TPO is controlled from 55:45 to 75. : 25, the drawn low hardness thermoplastic elastomer yarn has a Shore hardness of 30A to 60A and a melting point of 50 ° C to 80 ° C; on the other hand, by controlling the ratio of the soft segment to the hard segment in the TPO The high-hardness thermoplastic elastomer yarn drawn from 30:70 to 40:60 has a Shore hardness of 65A to 90A and a melting point of 100 ° C to 180 ° C.

A high-strength composite reinforced fabric can also be obtained by using the same thermoplastic elastomer polymer as a raw material, and it can be seen from Examples 1 to 7 in Table 2 that the tensile strength of the fabric before hot pressing is obtained. And the impact strength test results, the tensile strength and impact strength of the composite reinforced fabric after hot pressing have a significant improvement effect.

Referring to the results of Table 2, Examples 1 and 8 were compared, in which both Examples 1 and 8 were made of the same high hardness thermoplastic elastomer yarn using the TPU raw material. The difference between Example 1 and Example 8 was that Example 1 was used. The same TPU material was made into a low hardness thermoplastic elastomer yarn, and Example 8 was made using a TPO material to make a low hardness thermoplastic elastomer yarn. As can be seen from the results of Table 2, when the same high-hardness thermoplastic elastomer yarn is used, when the raw material of the low-hardness thermoplastic elastomer yarn in the composite reinforced fabric is the same as the raw material of the high-hardness thermoplastic elastomer yarn, The high- and low-hardness thermoplastic elastomer yarns have better compatibility. The composite reinforced fabric after hot pressing in Example 1 has higher tensile strength and impact strength than that in Example 8. Composite reinforced fabrics all have better results.

Referring to the results of Table 2, Examples 4 and 8 were compared, in which both Examples 4 and 8 were made of the same low-hardness thermoplastic elastomer yarn using TPO raw materials, and Example 4 differed from Example 8 in that Example 4 was used. The TPO raw materials were made into high and low hardness thermoplastic elastomer yarns, and in Example 8, two different raw materials were used to form high and low hardness thermoplastic elastomer yarns. As can be seen from the results of Table 2, when thermoplastic elastomers of different raw materials (such as Example 8) were mixed to form high- and low-hardness thermoplastic elastomer yarns, in Example 8, TPU was used to provide reinforcing tensile strength. Therefore, the tensile strength of the composite reinforced fabric after hot pressing in Example 8 is significantly better than that of the composite reinforced fabric after hot pressing in Example 4; on the other hand, when a thermoplastic elastomer of the same TPO is used ( If the high- and low-hardness thermoplastic elastomer yarn is prepared as in the embodiment 4, the impact strength of the composite reinforced fabric after the hot pressing can be improved, and the impact resistance of the composite reinforced fabric after the hot pressing in the embodiment 4 is improved. The strength may be superior to the impact strength of the heat-compressed composite reinforced fabric of Example 8.

Furthermore, the present invention can also combine other types of fibers in a yarn to produce composite reinforced fabrics having different characteristics. Referring to the results of Examples 5 and 7 in Table 2, the high hardness thermoplastic elastomer yarns of Examples 5 and 7 were combined with PET fibers and TPU fibers, and the high hardness thermoplastic elastomer yarns were low in hardness. The thermoplastic elastomer yarn is made into a woven fabric, and a composite reinforced fabric can be obtained by hot pressing treatment, and the composite reinforced fabric still has high tensile strength and high impact strength. It can be seen from Example 5 that the tensile strength after hot pressing is 531 kgf/cm ² and the impact strength is 287 J/m; as seen from Example 7, the tensile strength after hot pressing is 267 kgf/cm ² and impact resistance. The strength is 148 J/m.

Referring to Table 2, Comparative Examples 1 to 5 and Examples 6 and 7 were comprehensively analyzed, in which Examples 1 to 5 were composite reinforced fabrics which were woven by weaving, and Examples 6 and 7 were composited by knitting. The reinforced fabric, as shown by the analysis of tensile strength and impact strength in Table 2, shows that the composite reinforced fabric obtained by the woven or knitted fabric can obtain better tensile strength and impact strength.

Thereby, the method for producing the composite reinforced fabric of the present invention is applicable to various weaving techniques, but different weaving methods also have an effect on the tensile strength and impact strength of the fabric produced therefrom. The woven and knitted methods will be compared with two sets of data, the first group being Examples 1 and 6, and the second group being Examples 5 and 7, the raw materials and yarns used in the second of the above groups. The conditions of the wire, the yarn interlacing ratio, and the hot pressing process are the same. The difference between the examples in the respective groups is that different weaving techniques are used, and the composite reinforcing fabrics of Examples 1 and 5 are woven by the weaving method and hot pressed. Thus, the composite reinforced fabrics of Examples 6 and 7 were obtained by weaving by knitting and hot pressing. As can be seen from the results of Table 2, the composite reinforced fabric made by the woven weaving technique has strong resistance. Tensile strength and impact strength.

Referring to the results of Table 2, Comparative Example 1 and Comparative Example 1 were compared. The difference between Example 1 and Comparative Example 1 was that Comparative Example 1 was not woven into a woven fabric using thermoplastic elastomer yarns having different hardnesses, and thus even Comparative Example 1 The composite reinforced fabric could not be formed by the hot pressing step. As can be seen from the results of Table 2, the tensile strength and the impact strength of Comparative Example 1 were not improved.

Referring to the results of Table 2, Comparative Example 1 and Comparative Example 2 were compared. The difference between Example 1 and Comparative Example 2 was that Comparative Example 2 was not woven into a fabric using thermoplastic elastomer yarns having different hardnesses, and was compared. The hot pressing temperature of Example 2 did not meet the conditions of greater than or equal to the melting point of the low hardness thermoplastic elastomer yarn and less than the melting point of the high hardness thermoplastic elastomer yarn. From the experimental results, the fabric of Comparative Example 2 could not be made into a composite reinforcement. The fabric loses the appearance and feel of the original fabric after hot pressing.

Claims (14)

A method for producing a composite reinforced fabric, comprising: woven a high-hardness thermoplastic elastomer yarn and a low-hardness thermoplastic elastomer yarn into a fabric having a melting point of 50 ° C to 150 ° C; The fabric is heat-pressed at a hot pressing temperature to obtain a composite reinforced fabric having a hot pressing temperature greater than or equal to the melting point of the low-hardness thermoplastic elastomer yarn and less than the melting point of the high-hardness thermoplastic elastomer yarn. The method of claim 1, wherein the difference between the hot pressing temperature and the melting point of the low hardness thermoplastic elastomer yarn is from 10 ° C to 50 ° C. The process of claim 1, wherein the high hardness thermoplastic elastomer yarn has a melting point of from 150 ° C to 300 ° C. The method of claim 1, wherein the low hardness thermoplastic elastomer yarn has a Shore hardness of 10A to 90A, and the high hardness thermoplastic elastomer yarn has a Shore hardness of 95A to 90D. The method of claim 1, wherein the step of weaving the high hardness thermoplastic elastomer yarn and the low hardness thermoplastic elastomer yarn into the fabric comprises: adding a high hardness thermoplastic elastomer fiber to a reinforcing fiber. The high hardness thermoplastic elastomer yarn is obtained by combining; and the high hardness thermoplastic elastomer yarn and the low hardness thermoplastic elastomer yarn are woven into the fabric. The method according to claim 5, wherein the reinforcing fiber is carbon fiber, glass fiber, rayon, Kevlar fiber or Dyneema fiber, and the reinforcing fiber accounts for 10% by weight to 90% by weight of the high hardness thermoplastic elastomer yarn. The method of any one of claims 1 to 4, wherein the step of weaving the high hardness thermoplastic elastomer yarn and the low hardness thermoplastic elastomer yarn into the fabric comprises: The high-hardness thermoplastic elastomer yarn is made of a high-hardness thermoplastic elastomer polymer, and the low-hardness thermoplastic elastomer yarn is made using a low-hardness thermoplastic elastomer polymer, and the high-hardness thermoplastic elastomer yarn is used. And woven the fabric with the low-hardness thermoplastic elastomer yarn; wherein the high-hardness thermoplastic elastomer polymer and the low-hardness thermoplastic elastomer polymer are each independently a thermoplastic rubber elastomer, a thermoplastic polyurethane elastomer, and a thermoplastic styrene elastic A thermoplastic, a polyolefinic elastomer, a dynamically vulcanized thermoplastic polyolefin elastomer, a thermoplastic polyetherester elastomer or a thermoplastic polyamide elastomer. The method according to claim 7, wherein the type of the high hardness thermoplastic elastomer polymer is the same as the type of the low hardness thermoplastic elastomer polymer. The method of claim 7, wherein the high hardness thermoplastic elastomer polymer and the low hardness thermoplastic elastomer polymer each comprise a soft segment and a hard segment, and the soft segment of the high hardness thermoplastic elastomer polymer is relative to The ratio of the hard segment is from 25:75 to 50:50, and the ratio of the soft segment of the low hardness thermoplastic elastomer polymer to the hard segment is from 51:49 to 80:20. The method of claim 7, wherein the high hardness thermoplastic elastomer polymer and the low hardness thermoplastic elastomer polymer are thermoplastic polyurethane elastomer, the high hardness thermoplastic elastomer polymer and the low hardness thermoplastic elastomer Each of the high-hardness thermoplastic elastomer polymer has a ratio of the soft segment to the hard segment of 30:70 to 50:50, and the low-hardness thermoplastic elastomer polymer The ratio of the soft segment to the hard segment is 56:44 to 70:30. The method of claim 7, wherein the high hardness thermoplastic elastomer polymer and the low hardness thermoplastic elastomer polymer are a thermoplastic polyether ester elastomer, the high hardness thermoplastic elastomer polymer and the low hardness thermoplastic Each of the elastomeric polymers contains a soft segment and a hard segment, and the ratio of the soft segment to the hard segment in the high hardness thermoplastic elastomer polymer is 30:70. To 40:60, the ratio of the soft segment to the hard segment in the low hardness thermoplastic elastomer polymer is from 52:48 to 75:25. The method of claim 7, wherein the high hardness thermoplastic elastomer polymer and the low hardness thermoplastic elastomer polymer are a thermoplastic polyolefin elastomer, the high hardness thermoplastic elastomer polymer and the low hardness thermoplastic Each of the elastomeric polymers contains a soft segment and a hard segment. The ratio of the soft segment to the hard segment in the high hardness thermoplastic elastomer polymer is from 30:70 to 40:60. The low hardness thermoplastic elastomer polymer The ratio of the soft segment to the hard segment is 55:45 to 75:25. A composite reinforced fabric comprising a high hardness thermoplastic elastomer yarn and a low hardness thermoplastic elastomer yarn, the surface of the low hardness thermoplastic elastomer yarn being micro-melted to adhere to the surface of the high hardness thermoplastic elastomer yarn . The composite reinforced fabric of claim 13, wherein the composite reinforced fabric is produced by the process of any one of claims 1 to 12.