阅读说明：本技术 一种高韧性涂覆布 (High-toughness coating cloth ) 是由 刘文广 王德文 王永弟 杨玉宝 于 2021-09-17 设计创作，主要内容包括：本发明提供一种高韧性涂覆布,涉及涂覆布技术领域。该高韧性涂覆布,包括粘结于内纤维层外侧的外纤维层,所述内纤维层和外纤维层之间通过粘接层粘结；所述外纤维层的外侧喷涂有外涂料层；所述内纤维层的内侧喷涂有内涂料层；所述外涂料层的外侧镀有纳米膜；所述内纤维层是由芳纶纤维纺织而成；所述外纤维层是由纤维布制成；所述外涂料层和内涂料层均是采用静电喷涂工艺分别均匀喷涂在外纤维层的外侧和内纤维层的外侧。通过采用双层高韧性纤维材料复合而成的涂覆布,并通过在其内外层喷涂聚氨酯涂料,该涂覆布结构更为牢固稳定,同时其整体的韧性也更好,在实际使用的过程中,具有更好的抗震性能、缓冲性能,同时也能减少对人体的损伤。(The invention provides high-toughness coating cloth, and relates to the technical field of coating cloth. The high-toughness coating cloth comprises an outer fiber layer bonded on the outer side of an inner fiber layer, wherein the inner fiber layer and the outer fiber layer are bonded through a bonding layer; the outer side of the outer fiber layer is sprayed with an outer coating layer; the inner side of the inner fiber layer is sprayed with an inner coating layer; the outer side of the outer coating layer is plated with a nano film; the inner fiber layer is formed by spinning aramid fibers; the outer fiber layer is made of fiber cloth; the outer coating layer and the inner coating layer are respectively and uniformly sprayed on the outer side of the outer fiber layer and the outer side of the inner fiber layer by adopting an electrostatic spraying process. By adopting the coating cloth compounded by double layers of high-toughness fiber materials and spraying the polyurethane coating on the inner layer and the outer layer of the coating cloth, the structure of the coating cloth is firmer and more stable, the overall toughness of the coating cloth is better, and the coating cloth has better anti-seismic performance and buffering performance and can reduce the damage to a human body in the actual use process.)

1. A high-toughness coated fabric, characterized in that: the fiber-reinforced composite material comprises an outer fiber layer (2) bonded on the outer side of an inner fiber layer (1), wherein the inner fiber layer (1) and the outer fiber layer (2) are bonded through a bonding layer (3);

an outer coating layer (4) is sprayed on the outer side of the outer fiber layer (2);

the inner side of the inner fiber layer (1) is sprayed with an inner coating layer (5);

the outer side of the outer coating layer (4) is plated with a nano film (6).

2. A high tenacity coated fabric according to claim 1, wherein: the inner fiber layer (1) is formed by spinning aramid fibers.

3. A high tenacity coated fabric according to claim 2, wherein: the preparation process of the aramid fiber cloth comprises the following steps:

the method comprises the following steps: processing a poly (phenylene terephthalamide) raw material into fine powder;

step two: dissolving the fine powder in the first step in sulfuric acid to generate a liquid crystal solution;

step three: soaking the filament yarn to be woven in the liquid crystal solution generated in the step two to ensure that the liquid crystal solution is uniformly attached to the outer surface of the filament yarn to be woven, taking out the filament yarn after soaking is completed, and drying the filament yarn;

step four: and (3) spinning the fine silk yarns to be spun after drying treatment in the third step, soaking the fine silk yarns for 1 hour by using weak alkaline water at the temperature of 50-55 ℃ after the spinning is finished, and drying to obtain the aramid fiber cloth.

4. A high tenacity coated fabric according to claim 3, wherein: and the filament yarns to be woven need to be soaked in the liquid crystal solution for 5-6 hours at normal temperature.

5. A high tenacity coated fabric according to claim 1, wherein: the outer fiber layer (2) is made of fiber cloth.

6. A high tenacity coated fabric according to claim 5, wherein: the preparation process of the fiber cloth comprises the following steps:

s1: spinning the synthetic fiber silk thread into synthetic fiber cloth;

s2: melting polyetherimide particles at high temperature, stopping heating after the polyetherimide particles are fully melted, uniformly spraying the polyetherimide particles on the inner surface and the outer surface of the synthetic fiber cloth by using an electrostatic spray gun after the temperature of polyetherimide liquid is reduced to 100 ℃, and naturally cooling to obtain the fiber cloth.

7. A high tenacity coated fabric according to claim 1, wherein: the outer coating layer (4) and the inner coating layer (5) are uniformly sprayed on the outer side of the outer fiber layer (2) and the inner side of the inner fiber layer (1) respectively by adopting an electrostatic spraying process.

8. A high tenacity coated fabric according to claim 1, wherein: the nano film (6) is processed by adopting an ultrasonic atomization spraying process.

Technical Field

The invention relates to the technical field of coating cloth, in particular to high-toughness coating cloth.

Background

The coating cloth is a composite cloth formed by compounding two or more layers of materials, is commonly used for freight tarpaulin, tent tarpaulin, air cushion bed and various waterproof and heat preservation occasions, and various different types of coating cloth are available in the market at present and generally have certain waterproof, sealing, high-temperature resistance and other performances.

The coating cloth has wide application in the field of fire fighting, including training or rescue equipment such as various shock pads or fire-fighting air cushions, but the whole material selection and the production processing technology of the coating cloth applied in the field of fire fighting and the like still have certain defects at present, and have certain problems in the actual use process; although the existing coating cloth for the fire fighting field has high integral strength, the toughness is relatively poor, and in the actual use process, the coating cloth can play a good role in shock absorption and protection, but easily causes certain damage to a human body in the process of hard contact with the human body; for this reason, we developed a new high-toughness coated fabric.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides high-toughness coating cloth, which solves the problems that the existing coating cloth for the fire fighting field has relatively poor toughness although the overall strength is high, and can play a better role in shock absorption and protection in the actual use process, but is easy to cause certain damage to a human body in the hard contact process with the human body.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a high-toughness coated fabric comprises an outer fiber layer bonded to the outer side of an inner fiber layer,

the inner fiber layer and the outer fiber layer are bonded through the bonding layer; the adhesive layer is made of special glue for silica gel, the special glue for silica gel has outstanding high-temperature resistance, low-temperature resistance and aging resistance, excellent electrical insulation property and moisture-proof and shock-resistant properties, the cured glue layer is in a soft transparent state, can resist high temperature above 250 ℃, has excellent high-temperature resistance and hot water resistance, and the existing special glue for Jinggu KINGKOUK-780 silica gel in the market can be used as the adhesive layer.

The outer side of the outer fiber layer is sprayed with an outer coating layer; the inner side of the inner fiber layer is sprayed with an inner coating layer;

and the outer side of the outer coating layer is plated with a nano film.

Preferably, the inner fiber layer is formed by spinning aramid fibers, has high temperature resistance, flame retardance and high toughness, and is used as an inner layer main body structure of the coating cloth, so that the coating cloth has a more stable and firm main body structure, and has better toughness, high temperature resistance and other properties, and can be applied to various severe environments.

Preferably, the preparation process of the aramid fiber cloth is as follows:

the method comprises the following steps: processing a poly (phenylene terephthalamide) raw material into fine powder;

step two: dissolving the fine powder in the first step in sulfuric acid to generate a liquid crystal solution;

step three: soaking the filament yarn to be woven in the liquid crystal solution generated in the step two to ensure that the liquid crystal solution is uniformly attached to the outer surface of the filament yarn to be woven, taking out the filament yarn after soaking is completed, and drying the filament yarn;

step four: and (3) spinning the fine silk yarns to be spun after drying treatment in the third step, soaking the fine silk yarns for 1 hour by using weak alkaline water at the temperature of 50-55 ℃ after the spinning is finished, and drying to obtain the aramid fiber cloth.

Preferably, the filament yarn to be woven needs to be soaked in the liquid crystal solution for 5-6 hours at normal temperature.

Preferably, the preparation process of the fiber cloth is as follows:

s1: spinning the synthetic fiber silk thread into synthetic fiber cloth;

s2: melting polyetherimide particles at high temperature, stopping heating after the polyetherimide particles are fully melted, uniformly spraying the polyetherimide particles on the inner surface and the outer surface of the synthetic fiber cloth by using an electrostatic spray gun after the temperature of polyetherimide liquid is reduced to 100 ℃, and naturally cooling to obtain the fiber cloth.

Preferably, the outer fiber layer is made of fiber cloth, the fiber cloth has strong high-temperature stability, even though the non-reinforced polyetherimide has good toughness and strength, the polyetherimide has excellent mechanical property, electrical insulation property, radiation resistance, high and low temperature resistance and wear resistance, and can penetrate through microwaves, the polyetherimide also has good flame retardance, chemical reaction resistance and electrical insulation property, and the whole strength and toughness of the coating cloth can be greatly enhanced by taking the polyetherimide as an outer layer main body structure of the coating cloth.

Preferably, outer dope layer and interior dope layer all adopt the electrostatic spraying technology evenly spray respectively in the outside of outer fibrous layer and the outside of interior fibrous layer, outer dope layer and interior dope layer all adopt polyurethane coating, through adopting the electrostatic spraying technology with outer dope layer and interior dope layer evenly spray respectively in the outside of outer fibrous layer and the inboard of interior fibrous layer, can make outer dope layer and interior dope layer spraying more even, make the whole quality of coating cloth higher, the performance is more excellent, outer dope layer and interior dope layer that polyurethane coating spraying formed both can play cover and guard action to the outside of outer fibrous layer and the inboard of interior fibrous layer respectively, also can strengthen the bulk strength and the toughness of this coating cloth simultaneously.

Preferably, the nano film is processed by adopting an ultrasonic atomization spraying process, and the nano film processed by adopting the ultrasonic atomization spraying process can form a waterproof layer on the outer side of the outer coating layer, so that the coating cloth has better waterproof performance.

(III) advantageous effects

The invention provides a high-toughness coating cloth. The method has the following beneficial effects:

1. the high-toughness coating cloth is compounded by selecting high-strength and high-toughness fiber materials and high-toughness coating materials and adopting a simple production and processing process, so that the coating cloth has more excellent performance, and can also play a better role in protecting a human body in the process of hard contact of the human body with the coating cloth.

2. The high-toughness coating cloth is formed by compounding the double-layer high-toughness fiber material, and the polyurethane coating is sprayed on the inner layer and the outer layer of the coating cloth, so that the structure of the coating cloth is firmer and more stable, the overall toughness of the coating cloth is better, and the coating cloth has better anti-seismic performance and buffering performance and can reduce the damage to a human body in the actual use process.

Drawings

FIG. 1 is a schematic view of the structure of a high tenacity coated fabric of the present invention;

FIG. 2 is a schematic view showing the structure of a fiber layer in a high tenacity coated fabric according to the present invention;

FIG. 3 is a schematic structural diagram of an outer fiber layer of a high-toughness coated fabric.

Wherein, 1, an inner fiber layer; 2. an outer fibrous layer; 3. an adhesive layer; 4. an outer coating layer; 5. an inner coating layer; 6. and (4) a nano film.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1 to 3, an embodiment of the present invention provides a high-toughness coated fabric, including an outer fiber layer 2 bonded to an outer side of an inner fiber layer 1, where the inner fiber layer 1 is woven from aramid fibers, and the inner fiber layer 1 woven from aramid fibers has high-temperature resistance, flame retardancy, and high toughness, and is used as an inner layer main body structure of the coated fabric, so that the coated fabric has a more stable and firm main body structure, and also has better toughness, high-temperature resistance, and other properties, so that the coated fabric can be applied in various harsh environments;

the preparation process of the aramid fiber cloth comprises the following steps:

the method comprises the following steps: processing a poly (phenylene terephthalamide) raw material into fine powder;

step two: dissolving the fine powder in the first step in sulfuric acid to generate a liquid crystal solution;

step three: soaking the filament yarn to be spun in the liquid crystal solution generated in the step two to ensure that the liquid crystal solution is uniformly attached to the outer surface of the filament yarn to be spun, taking out the filament yarn after soaking is finished, and drying the filament yarn;

step four: and (3) spinning the filaments dried in the third step, soaking the filaments for 1 hour by using weak alkaline water at the temperature of 50-55 ℃ after the spinning is finished, and drying to obtain the aramid fiber cloth.

The filament yarn to be woven needs to be soaked in the liquid crystal solution for 5-6 hours at normal temperature.

The outer fiber layer 2 is made of fiber cloth, the fiber cloth has strong high-temperature stability, even though the non-reinforced polyetherimide has good toughness and strength, the polyetherimide has excellent mechanical property, electrical insulation property, irradiation resistance, high and low temperature resistance and wear resistance, and can penetrate through microwaves, the polyetherimide also has good flame retardance, chemical reaction resistance and electrical insulation property, and the polyetherimide is used as an outer layer main body structure of the coating cloth, so that the overall strength and toughness of the coating cloth can be greatly enhanced.

The preparation process of the fiber cloth comprises the following steps:

s1: spinning the synthetic fiber silk thread into synthetic fiber cloth;

s2: melting polyetherimide particles at high temperature, stopping heating after the polyetherimide particles are fully melted, uniformly spraying the polyetherimide particles on the inner surface and the outer surface of the synthetic fiber cloth by using an electrostatic spray gun after the temperature of polyetherimide liquid is reduced to 100 ℃, and naturally cooling to obtain the fiber cloth.

The inner fiber layer 1 and the outer fiber layer 2 are bonded through the bonding layer 3; the adhesive layer 3 is made of special glue for silica gel, the special glue for silica gel not only has outstanding high-temperature resistance, low-temperature resistance and aging resistance, but also has excellent electrical insulation property and moisture-proof and shock-resistant properties, and the cured glue layer is in a soft transparent state, can resist high temperature of more than 250 ℃, has excellent high-temperature resistance and hot water resistance, and the adhesive layer 3 can be made of special glue for Jingguo KINGKOUK-780 silica gel in the market.

The outer side of the outer fiber layer 2 is sprayed with an outer coating layer 4; the inner side of the inner fiber layer 1 is sprayed with an inner coating layer 5; the outer coating layer 4 and the inner coating layer 5 are uniformly sprayed on the outer side of the outer fiber layer 2 and the inner side of the inner fiber layer 1 respectively by adopting an electrostatic spraying process, the outer coating layer 4 and the inner coating layer 5 are respectively made of polyurethane coating, the outer coating layer 4 and the inner coating layer 5 are respectively and uniformly sprayed on the outer side of the outer fiber layer 2 and the inner side of the inner fiber layer 1 by adopting the electrostatic spraying process, the spraying of the outer coating layer 4 and the inner coating layer 5 can be more uniform, the overall quality of the coated cloth is higher, the performance is more excellent, the outer coating layer 4 and the inner coating layer 5 formed by spraying the polyurethane coating can respectively cover and protect the outer side of the outer fiber layer 2 and the inner side of the inner fiber layer 1, and the overall strength and toughness of the coated cloth can be enhanced.

The outer side of the outer coating layer 4 is plated with a nano film 6; the nano film 6 is processed by adopting an ultrasonic atomization spraying process, and the nano film 6 processed by adopting the ultrasonic atomization spraying process can form a waterproof layer on the outer side of the outer coating layer 4, so that the coating cloth has better waterproof performance.

The nanomembrane 6 may be a mixture of elastomeric plastic particles of polydimethylsiloxane used on the surface of the outer paint layer 4 to tightly wrap the pores, thereby forming a finer network in the pores, which also means that 95-99% of the coating forms air pockets, so that any liquid contacting the coating does not reach its solid surface, thereby providing a better water-repellent effect.

The working principle is as follows: the outer fiber layer 2 outside the inner fiber layer 1 of the coating cloth is characterized in that the inner fiber layer 1 formed by spinning aramid fibers has high temperature resistance, flame retardance and high toughness, the outer fiber layer 2 is made of fiber cloth, the outer fiber layer 2 has excellent high temperature resistance and high flexibility and has certain flame retardance, and the outer fiber layer is used as an outer layer main body structure of the coating cloth, so that the overall strength and the toughness can be greatly enhanced; the outer side of the outer fiber layer 2 is sprayed with an outer coating layer 4, which can respectively cover and protect the outer side of the outer fiber layer 2 and the inner side of the inner fiber layer 1, and can also enhance the overall strength and toughness of the coating cloth; the outer side of the outer coating layer 4 is plated with the nano film 6, and the nano film 6 processed by the ultrasonic atomization spraying process can form a waterproof layer on the outer side of the outer coating layer 4, so that the coating cloth has better waterproof performance.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.