阅读说明：本技术 一种可防腐耐化学性软管及其制备方法 (Anticorrosion and chemical-resistant hose and preparation method thereof ) 是由 陈军 周明 黄裕中 张小红 卜小海 吴宏亮 于 2021-08-26 设计创作，主要内容包括：本发明公开一种可防腐耐化学性软管及其制备方法,软管由外向内依次包括外胶层,编织增强层,内胶层和耐高温、耐腐蚀特种涂层；耐高温、耐腐蚀特种涂层包括如下重量份的组分：乙烯基树脂100份、功能性填料10-20份、促进剂0.5-1份和助剂4-8份。制备：S1、将乙烯基树脂、功能性填料和促进剂混合,得到混合物料；S2、向混合物料中加入助剂并搅拌,得到喷涂浆料；S3、采用管内离心喷涂的方式,将喷涂浆料喷涂在内胶层的内壁上,固化形成耐高温、耐腐蚀特种涂层,即得到可防腐耐化学性软管。本发明通过对特种涂层的配方调配使得该涂层均匀、光滑,可降低远距离输送的压力损失,柔韧性好,环保经济,成为多功能多用途的特种产品,有效提高了产品价值。(The invention discloses an anticorrosive chemical-resistant hose and a preparation method thereof, wherein the hose sequentially comprises an outer rubber layer, a woven reinforcement layer, an inner rubber layer and a high-temperature-resistant and corrosion-resistant special coating from outside to inside; the high-temperature-resistant and corrosion-resistant special coating comprises the following components in parts by weight: 100 parts of vinyl resin, 10-20 parts of functional filler, 0.5-1 part of accelerator and 4-8 parts of auxiliary agent. Preparation: s1, mixing vinyl resin, functional filler and accelerator to obtain a mixed material; s2, adding an auxiliary agent into the mixture and stirring to obtain spraying slurry; and S3, spraying the spraying slurry on the inner wall of the inner rubber layer by adopting a centrifugal spraying mode in the hose, and curing to form a special high-temperature-resistant and corrosion-resistant coating, thereby obtaining the anticorrosive and chemical-resistant hose. The invention can make the coating even and smooth by blending the formula of the special coating, can reduce the pressure loss of long-distance transmission, has good flexibility, is environment-friendly and economical, becomes a multifunctional and multipurpose special product, and effectively improves the product value.)

1. The hose is characterized by comprising an outer adhesive layer (1), a woven reinforcing layer (2), an inner adhesive layer (3) and a high-temperature-resistant and corrosion-resistant special coating (4) from outside to inside in sequence; the high-temperature-resistant and corrosion-resistant special coating (4) comprises the following components in parts by weight: 100 parts of vinyl resin, 10-20 parts of functional filler, 0.5-1 part of accelerator and 4-8 parts of auxiliary agent.

2. An antiseptic and chemical resistant hose according to claim 1, characterized in that said high temperature and corrosion resistant specialty coating (4) comprises the following components in parts by weight: 100 parts of vinyl resin, 15-20 parts of functional filler, 0.5-0.8 part of accelerator and 5-7 parts of assistant.

3. An antiseptic and chemical resistant hose according to claim 2, characterized in that said high temperature and corrosion resistant specialty coating (4) comprises the following components in parts by weight: 100 parts of vinyl resin, 15 parts of functional filler, 0.6 part of accelerator and 6 parts of auxiliary agent.

4. A corrodible and chemical resistant hose according to any one of claims 1 to 3, wherein said functional filler is aqueous PU.

5. A corrodible, chemical resistant hose according to any one of claims 1 to 3, wherein said accelerator is cobalt iso-octoate.

6. A corrodible, chemical resistant hose according to any one of claims 1 to 3, wherein said auxiliary agent is a polysiloxane.

7. An antiseptic and chemical resistant hose according to claim 1, characterized in that the thickness of said special high temperature and corrosion resistant coating (4) is 650-850 μm.

8. A method of making an antiseptic and chemical resistant hose according to any one of claims 1 to 7, comprising the steps of:

s1, mixing and uniformly stirring the vinyl resin, the functional filler and the accelerator according to the weight part ratio to obtain a mixed material;

s2, adding the auxiliary agent into the mixed material and uniformly stirring to obtain spraying slurry;

s3, spraying the spraying slurry on the inner wall of the inner rubber layer (3) in a centrifugal spraying mode in the pipe, and curing to form the high-temperature-resistant corrosion-resistant special coating (4), namely the anticorrosive chemical-resistant hose.

9. The method as claimed in claim 8, wherein the stirring speed in step S1 is 800-1000rpm, and the stirring time is 10-20 min; the stirring speed in step S2 is 1100-1200rpm, and the stirring time is 15-30 minutes.

10. The method for preparing the anticorrosive chemical-resistant hose according to claim 8, wherein an aviation-grade high-speed fan is used as a power source for centrifugal spraying in the step S3, the spraying speed is 8-10 m/min, and the spraying temperature is 15-35 ℃.

Technical Field

The invention relates to the technical field of anti-corrosion pipelines, in particular to an anti-corrosion chemical-resistant hose. The hose with the corrosion resistance and the chemical resistance is mainly applied to scenes of emergency rescue, industrial and mining drainage, agricultural dragging water/excrement delivery, field delivery of chemical substance-containing liquid and the like, and is convenient to lay, roll and store relative to a hard pipeline.

Background

At present, metal pipelines or hard pipelines are generally adopted for conveying corrosion-resistant fluid, but the metal pipelines or the hard pipelines are relatively heavy, are difficult to lay on the pipelines, are only suitable for short-distance installation, and are relatively complex in construction and long in construction period. Therefore, it is necessary to lay the hose for a long distance using a corrosion-resistant hose, and the hose has a short construction period, is easy to lay, and is easy to handle.

However, the existing production process of the hose generally adopts the polyester industrial yarn as the weaving reinforcement layer, and the inner rubber layer and the outer rubber layer are respectively used as the anti-leakage layer and the wear-resistant protective layer. The inner rubber layer serving as an anti-leakage layer generally does not have corrosion resistance, and if the inner rubber layer meets the corrosion resistance function, the cost is high; and when the inner glue layer has the corrosion-resistant function through the prior art, the adhesion of the inner glue layer and the woven reinforcing layer is difficult.

Disclosure of Invention

Aiming at the problems that the inner rubber layer in the existing hose production process does not meet the corrosion resistance function, if the inner rubber layer meets the corrosion resistance function, the production cost is increased, the adhesion between the inner rubber layer and the woven reinforcement layer is difficult to a certain degree, and the defects can cause the problems that the existing anticorrosive hose is high in production cost, the functional layers in the hose are difficult to adhere and the like; aiming at the defects and shortcomings, the invention provides the anticorrosion chemical-resistant hose which is low in cost, good in anticorrosion performance and free of influence on adhesion among functional layers in the hose.

The invention is realized by the following technical scheme:

the hose is characterized by comprising an outer rubber layer, a woven reinforcement layer, an inner rubber layer and a high-temperature-resistant and corrosion-resistant special coating from outside to inside in sequence; the high-temperature-resistant and corrosion-resistant special coating comprises the following components in parts by weight: 100 parts of vinyl resin, 10-20 parts of functional filler, 0.5-1 part of accelerator and 4-8 parts of auxiliary agent.

Specifically, the functional filler is added to increase the affinity and flexibility of the high-temperature-resistant and corrosion-resistant special coating, and simultaneously, the adhesion effect between the high-temperature-resistant and corrosion-resistant special coating and the inner rubber layer is favorably improved. Specifically, the anticorrosion and chemical-resistant hose provided by the invention is designed by adding a special high-temperature-resistant and corrosion-resistant coating layer in the original hose and optimizing the formula of the special coating layer, so that the coating layer has excellent corrosion resistance; the process of the invention does not need the inner glue layer to have the corrosion resistance function, thereby solving the problems in the prior art that: if the inner rubber layer is required to satisfy the corrosion resistance function, the production cost is high, and the adhesion between the inner rubber layer and the woven reinforcing layer is difficult. When the anticorrosion and chemical-resistant hose is used for conveying corrosive fluid media, the medium of the corrosive fluid can be safely conveyed through the high-temperature-resistant and corrosion-resistant special coating arranged in the hose, so that the hose is effectively protected from being corroded; long-term use proves that the anticorrosion and chemical-resistant hose is durable and has excellent anticorrosion performance; meanwhile, the high-temperature resistance of the whole hose is further improved due to the special high-temperature-resistant and corrosion-resistant coating arranged in the hose.

The anticorrosive chemical-resistant hose selects the components such as high-temperature-resistant and corrosion-resistant vinyl resin, other functional fillers (aqueous PU), an accelerator, an auxiliary agent (polysiloxane) and the like, and strictly controls the proportion of the components to prepare a thick-film type compound as a high-temperature-resistant and corrosion-resistant special coating inside the hose; the invention has the advantages of uniform and smooth coating, good flexibility, environmental protection and economy, can reduce the pressure loss of long-distance transmission, is suitable for different rescue or application places by matching, enlarges the application range, becomes a multifunctional and multipurpose special product, and effectively improves the product value. The high-temperature-resistant and corrosion-resistant special coating arranged in the hose disclosed by the invention has the advantages that the formula and the formula proportion are optimized, so that the coating not only meets the functions of high temperature resistance and corrosion resistance, but also has stronger bonding capability with an inner adhesive layer in the original pipeline.

Further, the high-temperature-resistant and corrosion-resistant special coating comprises the following components in parts by weight: 100 parts of vinyl resin, 15-20 parts of functional filler, 0.5-0.8 part of accelerator and 5-7 parts of assistant.

Further, the high-temperature-resistant and corrosion-resistant special coating comprises the following components in parts by weight: 100 parts of vinyl resin, 15 parts of functional filler, 0.6 part of accelerator and 6 parts of auxiliary agent.

Further, the functional filler is water-based PU. The introduction of the functional filler can increase the blocking effect and the flexibility of the coating.

Further, the promoter is selected from cobalt isooctanoate. The accelerant used in the invention is a low-cobalt environment-friendly cobalt isooctanoate accelerant.

Further, the auxiliary agent is polysiloxane.

Further, the thickness of the special coating with high temperature resistance and corrosion resistance is 650-850 mu m. Preferably, the thickness of the special high-temperature-resistant and corrosion-resistant coating is set to 650-.

A method for preparing a corrosionproof chemical resistant hose, characterized in that the method comprises the following steps: specifically, the preparation method of the anticorrosion and chemical resistant hose comprises the steps of compounding a layer of high-temperature-resistant and corrosion-resistant special coating on the basis of the original hose, and specifically adhering the high-temperature-resistant and corrosion-resistant special coating to the inner wall of the inner glue layer, so as to form the anticorrosion and chemical resistant hose; the specific production process is as follows (the original hose production process is not described in detail here, and the existing original hose can be used directly):

s1, mixing and uniformly stirring the vinyl resin, the functional filler and the accelerator according to the weight part ratio to obtain a mixed material;

s2, adding the auxiliary agent into the mixed material and uniformly stirring to obtain spraying slurry;

s3, spraying the spraying slurry on the inner wall of the inner rubber layer in a centrifugal spraying mode in the pipe, and curing to form the high-temperature-resistant corrosion-resistant special coating, so that the anticorrosive chemical-resistant hose is obtained.

Further, the stirring speed in step S1 is 800-; the stirring speed in step S2 is 1100-1200rpm, and the stirring time is 15-30 minutes. Preferably, the stirring speed in step S1 is preferably 800-1000 rpm; if the stirring speed is lower than the range, the dispersion among the components is not facilitated, and if the stirring speed is higher than the range, the shearing force borne by the material during stirring greatly affects the structure among the components, so that the performance of the finally formed high-temperature-resistant and corrosion-resistant special coating is affected, the adverse effect is brought to the high-temperature-resistant and corrosion-resistant performance, and the bonding capability between the coating and the inner glue layer of the original pipeline is also affected.

Further, in step S3, an aviation-grade high-speed fan is selected as a power source for centrifugal spraying, the spraying speed is 8-10 m/min, and the spraying temperature is 15-35 ℃. Specifically, in the preparation process, an aviation-grade high-speed fan is selected as a power source for driving, the spraying speed can reach 10 m/min at most, the flow of a spray gun is adjusted according to a PLC flow control valve, the coating is highly atomized, the atomized particles are uniform, and the linear speed is high; the coating is uniform and smooth and has no bubbles and pinholes; the coating has good adhesive force, and the required thickness can be achieved by one-time spraying; the construction speed is fast, efficient.

The invention has the beneficial effects that:

(1) the hose capable of preventing corrosion and resisting chemicals provided by the invention has the advantages of simple structure and lower production cost; the design idea of the hose is that a layer of high-temperature-resistant and corrosion-resistant special coating is added in the original hose, and the formula of the special coating is optimized, so that the coating has excellent corrosion resistance; the hose of the invention is designed with a special high-temperature resistant and corrosion resistant coating, so that the inner glue layer in the original pipeline is not required to have a corrosion resistant function, and the hose of the invention solves the problems in the prior art that: if the inner rubber layer is required to satisfy the corrosion resistance function, the production cost is high, and the adhesion between the inner rubber layer and the woven reinforcing layer is difficult.

(2) The anticorrosive chemical-resistant hose selects the components such as high-temperature-resistant and corrosion-resistant vinyl resin, aqueous PU, an accelerator, polysiloxane and the like, and strictly controls the proportion of the components to prepare a thick-film type compound as a high-temperature-resistant and corrosion-resistant special coating inside the hose, so that the hose is a brand-new anticorrosive pipeline preparation idea compared with the prior art that the hose has an anticorrosive function by improving the inner adhesive layer. The coating is uniform and smooth by blending the formula of the high-temperature-resistant and corrosion-resistant special coating, can reduce pressure loss of long-distance transmission, has good flexibility, is environment-friendly and economical, is suitable for different rescue or application places, expands the application range, becomes a multifunctional and multipurpose special product, and effectively improves the product value.

(3) The high-temperature-resistant and corrosion-resistant special coating arranged in the hose disclosed by the invention has the advantages that the formula and the formula proportion are optimized, so that the coating not only meets the functions of high temperature resistance and corrosion resistance, but also has stronger bonding capability with an inner adhesive layer in the original pipeline.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a conventional hose;

fig. 2 is a schematic structural view of the corrosionproof chemical-resistant hose prepared by the present invention.

In the figure: 1 outer glue layer, 2 weaving enhancement layer, 3 inner glue layer, 4 high temperature resistant, corrosion resistant special coating.

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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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 1

An anticorrosion chemical-resistant hose, which comprises an outer adhesive layer 1, a woven reinforcing layer 2, an inner adhesive layer 3 and a high-temperature-resistant anticorrosion special coating 4 from outside to inside in sequence (the structure diagram of the anticorrosion chemical-resistant hose is shown in figure 2); the high-temperature-resistant and corrosion-resistant special coating 4 comprises the following components in parts by weight: 100 parts of vinyl resin, 15 parts of functional filler, 0.6 part of accelerator and 6 parts of auxiliary agent. The functional filler is water-based PU; the accelerant is low-cobalt environment-friendly cobalt isooctanoate; the auxiliary agent is polysiloxane.

Example 2

An anticorrosion chemical-resistant hose, which comprises an outer adhesive layer 1, a woven reinforcing layer 2, an inner adhesive layer 3 and a high-temperature-resistant anticorrosion special coating 4 from outside to inside in sequence (the structure diagram of the anticorrosion chemical-resistant hose is shown in figure 2); the high-temperature-resistant and corrosion-resistant special coating 4 comprises the following components in parts by weight: 100 parts of vinyl resin, 10 parts of functional filler, 1 part of accelerator and 8 parts of auxiliary agent. The functional filler is water-based PU; the accelerant is low-cobalt environment-friendly cobalt isooctanoate; the auxiliary agent is polysiloxane.

Example 3

An anticorrosion chemical-resistant hose, which comprises an outer adhesive layer 1, a woven reinforcing layer 2, an inner adhesive layer 3 and a high-temperature-resistant anticorrosion special coating 4 from outside to inside in sequence (the structure diagram of the anticorrosion chemical-resistant hose is shown in figure 2); the high-temperature-resistant and corrosion-resistant special coating 4 comprises the following components in parts by weight: 100 parts of vinyl resin, 20 parts of functional filler, 0.8 part of accelerator and 5 parts of auxiliary agent. The functional filler is water-based PU; the accelerant is low-cobalt environment-friendly cobalt isooctanoate; the auxiliary agent is polysiloxane.

Example 4

An anticorrosion chemical-resistant hose, which comprises an outer adhesive layer 1, a woven reinforcing layer 2, an inner adhesive layer 3 and a high-temperature-resistant anticorrosion special coating 4 from outside to inside in sequence (the structure diagram of the anticorrosion chemical-resistant hose is shown in figure 2); the high-temperature-resistant and corrosion-resistant special coating 4 comprises the following components in parts by weight: 100 parts of vinyl resin, 12 parts of functional filler, 0.6 part of accelerator and 7 parts of auxiliary agent. The functional filler is water-based PU; the accelerant is low-cobalt environment-friendly cobalt isooctanoate; the auxiliary agent is polysiloxane.

Example 5

An anticorrosion chemical-resistant hose, which comprises an outer adhesive layer 1, a woven reinforcing layer 2, an inner adhesive layer 3 and a high-temperature-resistant anticorrosion special coating 4 from outside to inside in sequence (the structure diagram of the anticorrosion chemical-resistant hose is shown in figure 2); the high-temperature-resistant and corrosion-resistant special coating 4 comprises the following components in parts by weight: 100 parts of vinyl resin, 18 parts of functional filler, 0.7 part of accelerator and 8 parts of auxiliary agent. The functional filler is water-based PU; the accelerant is low-cobalt environment-friendly cobalt isooctanoate; the auxiliary agent is polysiloxane.

The difference between the above embodiments 1 to 5 lies in that the component contents in the high temperature resistant and corrosion resistant special coating 4 are different, and the rest are the same.

Example 6

The method for preparing the corrosionproof chemical resistant hose of embodiment i above, comprising the steps of: the preparation method of the anticorrosion chemical-resistant hose is characterized in that on the basis of the original hose, a special high-temperature-resistant and corrosion-resistant coating 4 is compounded on an inner rubber layer 3 in the hose, so that the anticorrosion chemical-resistant hose in the embodiment 1 is formed; the specific production process is as follows (the original hose production process is not described in detail here, and the existing original hose can be directly used, and the structure of the original hose is shown in fig. 1):

s1, mixing 100 parts of vinyl resin, 15 parts of functional filler (namely 15 parts of waterborne PU) and 0.6 part of accelerator according to the weight part ratio, and mechanically stirring for 15 minutes at 900rpm to uniformly mix the components to obtain a mixed material;

s2, adding 6 parts of an auxiliary agent (namely 6 parts of polysiloxane) into the mixed material, and mechanically stirring at 1100rpm for 20 minutes to uniformly mix the mixture to obtain spraying slurry;

s3, selecting an aviation-grade high-speed fan as a power source for centrifugal spraying, and spraying the spraying slurry on the inner wall of the inner glue layer 3 in a tube-in-tube centrifugal spraying mode (wherein the spraying speed is 8 m/min, the spraying temperature is 15 ℃), and curing to form a high-temperature-resistant and corrosion-resistant special coating 4 with the thickness of 780 microns; finally obtaining the anticorrosive chemical-resistant hose.

Example 7

The method for preparing the corrosionproof chemical resistant hose of the embodiment 2 comprises the following steps:

s1, mixing 100 parts of vinyl resin, 10 parts of functional filler (namely 10 parts of waterborne PU) and 1 part of accelerator according to the weight part ratio, and mechanically stirring for 20 minutes at 800rpm to uniformly mix the mixture to obtain a mixed material;

s2, adding 8 parts of auxiliary agent (namely 8 parts of polysiloxane) into the mixed material, and mechanically stirring for 15 minutes at 1200rpm to uniformly mix the mixture to obtain spraying slurry;

s3, selecting an aviation-grade high-speed fan as a power source for centrifugal spraying, and spraying the spraying slurry on the inner wall of the inner glue layer 3 in a pipe-in centrifugal spraying mode (wherein the spraying speed is 9 m/min, the spraying temperature is 20 ℃), and curing to form a high-temperature-resistant and corrosion-resistant special coating 4 with the thickness of 760 micrometers; finally obtaining the anticorrosive chemical-resistant hose.

Example 8

The preparation method of the anticorrosive chemical-resistant hose of the embodiment 3 comprises the following steps:

s1, mixing 100 parts of vinyl resin, 20 parts of functional filler (namely 20 parts of waterborne PU) and 0.8 part of accelerator according to the weight part ratio, and mechanically stirring for 10 minutes at 1000rpm to uniformly mix the components to obtain a mixed material;

s2, adding 5 parts of an auxiliary agent (namely 5 parts of polysiloxane) into the mixed material, and mechanically stirring at 1100rpm for 20 minutes to uniformly mix the mixture to obtain spraying slurry;

s3, selecting an aviation-grade high-speed fan as a power source for centrifugal spraying, and spraying the spraying slurry on the inner wall of the inner glue layer 3 in a pipe-in centrifugal spraying mode (wherein the spraying speed is 8 m/min, the spraying temperature is 25 ℃), and curing to form a high-temperature-resistant and corrosion-resistant special coating 4 with the thickness of 760 micrometers; finally obtaining the anticorrosive chemical-resistant hose.

Example 9

The preparation method of the anticorrosive chemical-resistant hose of the embodiment 4 comprises the following steps:

s1, mixing 100 parts of vinyl resin, 12 parts of functional filler (namely 12 parts of waterborne PU) and 0.6 part of accelerator according to the weight part ratio, and mechanically stirring for 15 minutes at 850rpm to uniformly mix the components to obtain a mixed material;

s2, adding 7 parts of auxiliary agent (namely 7 parts of polysiloxane) into the mixed material, and mechanically stirring for 25 minutes at 1150rpm to uniformly mix the mixture to obtain spraying slurry;

s3, selecting an aviation-grade high-speed fan as a power source for centrifugal spraying, and spraying the spraying slurry on the inner wall of the inner glue layer 3 in a centrifugal spraying mode in a pipe (wherein the spraying speed is 8 m/min, the spraying temperature is 30 ℃), and curing to form a high-temperature-resistant and corrosion-resistant special coating 4 with the thickness of 720 microns; finally obtaining the anticorrosive chemical-resistant hose.

Example 10

The method for preparing the corrosion-resistant and chemical-resistant hose of the embodiment 5 comprises the following steps:

s1, mixing 100 parts of vinyl resin, 18 parts of functional filler (namely 18 parts of waterborne PU) and 0.7 part of accelerator according to the weight part ratio, and mechanically stirring for 15 minutes at 950rpm to uniformly mix the mixture to obtain a mixed material;

s2, adding 8 parts of auxiliary agent (namely 8 parts of polysiloxane) into the mixed material, and mechanically stirring at 1100rpm for 20 minutes to uniformly mix the mixture to obtain spraying slurry;

s3, selecting an aviation-grade high-speed fan as a power source for centrifugal spraying, and spraying the spraying slurry on the inner wall of the inner glue layer 3 in a centrifugal spraying mode in a pipe (wherein the spraying speed is 8 m/min, the spraying temperature is 35 ℃), and curing to form a high-temperature-resistant and corrosion-resistant special coating 4 with the thickness of 720 microns; finally obtaining the anticorrosive chemical-resistant hose.

And (3) testing: the preparation parameters of the anticorrosive and chemical resistant hoses prepared in the above examples 6 to 10 were summarized and tested for adhesion to the inner rubber layer, which were prepared as follows:

the test data in the table show that under the controllable speed and different production environment temperatures, the corrosion-resistant coating achieves the effective design thickness, and the adhesive force between the coating and the inner adhesive layer is verified to meet the adhesive requirement.

The above-mentioned preferred embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention. Obvious variations or modifications of the present invention are within the scope of the present invention.