阅读说明：本技术 一种柔性软管及其制备方法 (Flexible hose and preparation method thereof ) 是由 耿金红 于 2019-10-23 设计创作，主要内容包括：本发明涉及一种柔性软管及其制备方法。本发明的软管以热塑性树脂丝为支撑骨架,起到支撑、承压的作用,单面压延硅胶的玻璃纤维布用于软管管体,其内表面压延的硅胶具有降噪音的作用,管头由玻璃纤维预浸硅胶布制成来降低飞机空气分配系统中通风软管的重量,在满足通风功能要求的前提下,使管路重量降低并同时使管路保持充分的柔韧性能,从而使飞机整体重量降低；本发明的的软管各部分采用特定原料制成,使得本发明的软管材料比传统柔性软管材料的密度减小40％,同时抗拉强度、弹性模量、抗冲击性性能更加优异,内部采用热塑性树脂丝作为支撑骨架,比传统柔性软管中钢/铜制金属丝密度更小,其重量显著的降低。(The invention relates to a flexible hose and a preparation method thereof. The hose takes the thermoplastic resin filaments as a supporting framework to play a role in supporting and bearing, the glass fiber cloth with silica gel calendered on one surface is used for the hose body, the silica gel calendered on the inner surface has a noise reduction function, the hose head is made of glass fiber pre-impregnated silica gel cloth to reduce the weight of the ventilation hose in an air distribution system of an airplane, and on the premise of meeting the ventilation function requirement, the weight of a pipeline is reduced and the pipeline keeps sufficient flexibility, so that the overall weight of the airplane is reduced; each part of the hose is made of specific raw materials, so that the density of the hose material is reduced by 40% compared with that of the traditional flexible hose material, the tensile strength, the elastic modulus and the impact resistance are more excellent, the thermoplastic resin wires are adopted in the hose material as a supporting framework, the density of the hose material is lower than that of steel/copper metal wires in the traditional flexible hose, and the weight of the hose material is obviously reduced.)

1. The utility model provides a flexible hose, its characterized in that, flexible pipe include body and tube head, the body include supporting framework and body, body and tube head form through the binder bonding solidification, supporting framework and body form through the glass cement bonding solidification, supporting framework make by thermoplastic resin silk, the body make by the glass fiber cloth of single face calendering silica gel, the tube head make by glass fiber preimpregnation silica gel cloth.

2. The flexible hose of claim 1, wherein said thermoplastic resin filaments are polyetheretherketone, nylon, polyimide or polyurethane.

3. The flexible hose of claim 1, wherein the glass fiber cloth with the single-sided rolled silicone rubber is formed by attaching a layer of silicone rubber to one side of the glass fiber cloth by a rolling process.

4. The flexible hose according to claim 3, wherein the silicone rubber has a thickness of 0.03 to 0.07mm, the silicone rubber has a hardness of 60 to 70 Shore, the single-side-rolled silicone rubber glass fiber cloth has a thickness of 0.10 to 0.16mm, preferably, the silicone rubber has a thickness of 0.05mm, the silicone rubber has a hardness of 65 Shore, and the single-side-rolled silicone rubber glass fiber cloth has a thickness of 0.13 mm.

5. The flexible hose of claim 1, wherein the glass fiber pre-impregnated silicone fabric is formed by attaching a layer of silicone rubber to each of two sides of the glass fiber fabric by a calendering process.

6. The flexible hose according to claim 5, wherein the silicone rubber has a thickness of 0.03 to 0.07mm, the silicone rubber has a hardness of 60 to 70 Shore, the glass fiber pre-impregnated silicone cloth has a thickness of 0.15 to 0.21mm, preferably, the silicone rubber has a thickness of 0.05mm, the silicone rubber has a hardness of 65 Shore, and the glass fiber pre-impregnated silicone cloth has a thickness of 0.18 mm.

7. The flexible hose of claim 1, wherein said adhesive is silicone rubber.

8. A method of manufacturing a flexible hose according to any one of claims 1 to 7, comprising the steps of:

(1) preparing a pipe body: firstly, sticking glass fiber cloth with silica gel rolled on one side on the surface of a core mold to obtain a tube body, winding thermoplastic resin filaments on the outer surface of the tube body, curing for 22-26 hours, demolding, and processing the shape to obtain the tube body;

(2) preparing a tube head: paving glass fiber pre-impregnated silica gel cloth on a mold, manufacturing a vacuum bag, curing, demolding and processing the shape to obtain the pipe head;

(3) and (3) bonding the pipe body and the pipe head: respectively coating the end parts of the inner surface and the outer surface of the tube head with adhesives, bonding the tube body and the tube head, putting the tube body and the tube head into a mold, curing at room temperature for 22-26 hours, demolding, and processing the shape to obtain the hose.

9. The method of claim 8, wherein the vacuum bag formed in step (2) has a vacuum degree of not less than 0.08MPa and a vacuum permeability of not more than 0.017MPa/5 min.

10. The method for preparing the flexible hose according to claim 8, wherein the curing in the step (2) is carried out by heating to a curing temperature at a heating rate of 1-4 ℃/min, and then cooling to a temperature below 60 ℃ at a cooling rate of not more than 4 ℃/min to remove the part in vacuum.

Technical Field

The invention belongs to the technical field of hoses, and particularly relates to a flexible hose and a preparation method thereof.

Background

The flexible hose is a flexible hose made of thermoplastic resin wire support silica gel cloth, has the functions of conveying liquid, flowing air and the like, is a silica gel pipeline supported by stainless steel wires and is heavy in weight when a flexible pipe used in an air distribution system in the field of domestic aviation at present is used, and the pipeline relates to a rubber vulcanization process in a production process, so that the flexible hose is high in energy consumption, heavy in pollution and harmful to human health.

The present invention has been made in view of the above circumstances.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a flexible hose and a preparation method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a flexible hose, flexible hose include body and tube head, the body include support chassis and body, body and tube head form through the binder bonding solidification, support chassis and body form through the glass cement bonding solidification, support chassis make by thermoplastic resin silk, the body make by the glass fiber cloth of single face calendering silica gel, the tube head make by glass fiber preimpregnation silica gel cloth.

Further, the thermoplastic resin filaments are polyether ether ketone, nylon, polyimide or polyurethane.

Further, the density of the polyether-ether-ketone is 1.31g/cm³The melting point is more than 300 ℃, the use temperature is-55-260 ℃, and the tensile strength is 132-148 MPa.

The density of the nylon is 1.15g/cm³The melting point is more than 215 ℃, the use temperature is-55-250 ℃, and the tensile strength is more than 65 MPa.

The density of the polyimide was 1.4g/cm³The melting point is more than 400 ℃, the use temperature is-200-300 ℃, and the tensile strength is more than 100 MPa.

The density of the polyurethane was 1.1g/cm³The using temperature is-55-120 ℃, and the tensile strength is more than 50 MPa.

The thermoplastic resin yarn has the physical and chemical properties of high temperature resistance, chemical corrosion resistance and the like, and in the field of aviation, the polyether-ether-ketone, the nylon, the polyimide or the polyurethane meets the requirements of space shuttles on high-performance materials due to high strength, small density and strong damage resistance, and is widely applied to producing parts of airplanes.

Furthermore, the glass fiber cloth with the single-sided rolled silica gel is formed by adhering a layer of silica gel to one side of the glass fiber cloth by adopting a rolling process.

Further, the thickness of the silicon rubber is 0.03-0.07mm, the hardness of the silicon rubber is 60-70 Shore, and the thickness of the glass fiber cloth with the single-side rolled silica gel is 0.10-0.16 mm.

Further, the thickness of the silicon rubber is 0.05mm, the hardness of the silicon rubber is 65 Shore, and the thickness of the glass fiber cloth with the single-side rolled silica gel is 0.13 mm.

Furthermore, the glass fiber pre-impregnated silica gel cloth is formed by respectively attaching a layer of silicon rubber on two sides of the glass fiber cloth through a calendering process.

Further, the thickness of the silicon rubber is 0.03-0.07mm, the hardness of the silicon rubber is 60-70 Shore, and the thickness of the glass fiber pre-impregnated silica gel cloth is 0.15-0.21 mm.

Further, the thickness of the silicon rubber is 0.05mm, the hardness of the silicon rubber is 65 Shore, and the thickness of the glass fiber pre-impregnated silica gel cloth is 0.18 mm.

The glass fiber degree in the invention is selected from alkali-free glass fiber cloth with a base material of 1080 standard, and the thickness is 0.08 mm. The calendering processes described in the present invention are all made by the prior art, are outside the scope of the present invention and are not described in detail.

Further, the adhesive is silicone rubber.

The silicone rubber reacts with water vapor in the air and is dried at room temperature to form durable and elastic silicone rubber for bonding articles, has good adaptability to climate, vibration, moisture, ozone and over-high or over-low temperature, and cannot be influenced in the flying process of an airplane.

The preparation method of the flexible hose comprises the following steps:

(1) preparing a pipe body: firstly, sticking glass fiber cloth with silica gel rolled on one side on the surface of a core mold to obtain a tube body, winding thermoplastic resin filaments on the outer surface of the tube body, curing for 22-26 hours, demolding, and processing the shape to obtain the tube body;

(2) preparing a tube head: paving glass fiber pre-impregnated silica gel cloth on a mold, manufacturing a vacuum bag, curing, demolding and processing the shape to obtain the pipe head;

(3) and (3) bonding the pipe body and the pipe head: and (3) coating an adhesive on the inner surface of the tube head and the end part of the outer surface of the tube body, adhering the tube body and the tube head, putting the tube body and the tube head into a mold, curing for 22-26 hours at room temperature, demolding, and processing the shape to obtain the hose.

Further, the vacuum degree of the vacuum bag manufactured in the step (2) is not lower than 0.08MPa, and the vacuum permeability is not more than 0.017MPa/5 min.

Further, in the step (2), the temperature is raised to the curing temperature at the temperature raising rate of 1-4 ℃/min, and then the temperature is lowered to below 60 ℃ at the temperature lowering rate of not more than 4 ℃/min, and the part is taken out in vacuum.

Wherein the curing temperature is determined according to the curing temperature of the adhesive.

Compared with the prior art, the invention has the beneficial effects that:

(1) the hose takes the thermoplastic resin filaments as a supporting framework to play a role in supporting and bearing, the glass fiber cloth with silica gel calendered on one surface is used for the hose body, the silica gel calendered on the inner surface has a noise reduction function, the hose head is made of glass fiber pre-impregnated silica gel cloth to reduce the weight of the ventilation hose in an air distribution system of an airplane, and on the premise of meeting the ventilation function requirement, the weight of a pipeline is reduced and the pipeline keeps sufficient flexibility, so that the overall weight of the airplane is reduced;

(2) each part of the hose is made of specific raw materials, so that the density of the hose material is reduced by 40% compared with that of the traditional flexible hose material, the tensile strength, the elastic modulus and the impact resistance are more excellent, the thermoplastic resin wires are adopted in the hose material as a supporting framework, the density of the hose material is lower than that of steel/copper metal wires in the traditional flexible hose, and the weight of the hose material is obviously reduced.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.