阅读说明：本技术 一种聚四氟乙烯纤维滤料及其使用方法 (Polytetrafluoroethylene fiber filter material and use method thereof ) 是由 蔡军 邓迎卉 张萍 冯金梅 葛光芹 胡海林 孔颖 于 2021-09-10 设计创作，主要内容包括：本发明公开的属于纤维滤料技术领域,具体为一种聚四氟乙烯纤维滤料及其使用方法,该聚四氟乙烯纤维滤料具体组成成分配比包括：聚四氟乙烯30-40份、聚苯酯20-30份、粘合剂10-20份和水适量,使滤布平均克重均匀,透光量均匀,综合拉力,抱合力有效提高。(The invention belongs to the technical field of fiber filter materials, and particularly relates to a polytetrafluoroethylene fiber filter material and a using method thereof, wherein the polytetrafluoroethylene fiber filter material comprises the following components in percentage by weight: 30-40 parts of polytetrafluoroethylene, 20-30 parts of polyphenyl ester, 10-20 parts of adhesive and a proper amount of water, so that the average gram weight of the filter cloth is uniform, the light transmission amount is uniform, the comprehensive tension and the cohesive force are effectively improved.)

1. A polytetrafluoroethylene fiber filter material is characterized in that: the polytetrafluoroethylene fiber filter material comprises the following specific components in percentage by weight: 30-40 parts of polytetrafluoroethylene, 20-30 parts of polyphenyl ester, 10-20 parts of adhesive and a proper amount of water.

2. A polytetrafluoroethylene fiber filter material according to claim 1, wherein: the polytetrafluoroethylene, the polyphenyl ester, the adhesive and the water are used for preparing polytetrafluoroethylene fiber filtrate, and the specific preparation step flow of the polytetrafluoroethylene fiber filtrate is as follows: mixing polytetrafluoroethylene, polyphenyl ester and adhesive, stirring for 3-5 min, adding water, stirring thoroughly until the mixture is completely mixed to obtain polytetrafluoroethylene fiber filtrate.

3. A polytetrafluoroethylene fiber filter material according to claim 1, wherein: the polytetrafluoroethylene fiber filter material comprises the following specific components in percentage by weight: 30 parts of polytetrafluoroethylene, 20 parts of polyphenyl ester, 10 parts of adhesive and a proper amount of water.

4. A polytetrafluoroethylene fiber filter material according to claim 1, wherein: the polytetrafluoroethylene fiber filter material comprises the following specific components in percentage by weight: 35 parts of polytetrafluoroethylene, 25 parts of polyphenyl ester, 15 parts of adhesive and a proper amount of water.

5. A polytetrafluoroethylene fiber filter material according to claim 1, wherein: the polytetrafluoroethylene fiber filter material comprises the following specific components in percentage by weight: 40 parts of polytetrafluoroethylene, 30 parts of polyphenyl ester, 20 parts of adhesive and a proper amount of water.

6. A method of using a polytetrafluoroethylene fiber filter according to claims 1-5, wherein: the specific using method of the filtrate prepared by the polytetrafluoroethylene fiber filter material comprises the following steps:

humidifying: firstly, placing filter cloth at the upper end of a lapping machine, lapping the filter cloth to enable the filter cloth to be tidy, then conveying the filter cloth into a humidifying device, keeping the temperature of the humidifying device at 10-20 ℃, and continuously humidifying the filter cloth for 30-40 minutes;

drafting: placing the humidified filter cloth into a drafting force device for stretching, and additionally arranging a roller pre-needling machine in the drafting force device to further process the filter cloth through stretching and pre-needling;

soaking and coating: placing the treated filter cloth into a soaking container, pouring polytetrafluoroethylene fiber filtrate into the container, heating the filtrate by a heating device, stopping heating when the temperature rises to 20-25 ℃, soaking the filter cloth in the filtrate for 2-3 hours, taking out the filter cloth after soaking, placing the filter cloth in an outdoor airing device, keeping the airing temperature at 20-30 ℃, continuously airing for 10-12 hours, coating the surface of the filter cloth for 3-5 times by the filtrate after airing, placing the filter cloth into a drying device after coating, adjusting the temperature of the drying device to 20-25 ℃, and continuously drying for 1-2 hours to obtain the polytetrafluoroethylene fiber filter cloth.

Technical Field

The invention relates to the technical field of fiber filter materials, in particular to a polytetrafluoroethylene fiber filter material and a using method thereof.

Background

The polytetrafluoroethylene fiber is a synthetic fiber polytetrafluoroethylene prepared by spinning or making a film and then cutting or fibrillating polytetrafluoroethylene, the fiber strength is 17.7-18.5 cN/dtex, and the elongation is 25-50%. In the molecular structure, the fluorine atom volume is larger than that of a hydrogen atom, the binding force of a fluorocarbon bond is strong, the function of protecting the whole carbon-carbon main chain is achieved, the polytetrafluoroethylene fiber has excellent chemical stability, the corrosion resistance is superior to other synthetic fiber varieties, the surface of the fiber has a waxy feeling and a small friction coefficient, the actual use temperature is 120-180 ℃, the polytetrafluoroethylene fiber also has good weather resistance and flexibility resistance, but the dyeing property and the heat conductivity are poor, the wear resistance is not good, the thermal expansion coefficient is large, and the easily generated electrostatic polytetrafluoroethylene fiber is mainly used as a high-temperature dust filter bag, a strong-corrosion-resistant filter material for filtering gas or liquid, a filler of a pump and a valve, a sealing tape, a self-lubricating bearing, a reinforcing material of a perfluorinated ion exchange membrane for alkali preparation, a tarpaulin of a launching rocket platform and the like.

The existing filter cloth processed and produced by filter materials cannot be uniform in average gram weight, light transmittance is not uniform enough, and comprehensive tension and cohesive force are poor.

Disclosure of Invention

The invention aims to provide a polytetrafluoroethylene fiber filter material and a using method thereof, and aims to solve the problems that the average gram weight of the filter cloth produced by processing the conventional filter material cannot be uniform, the light transmission amount is not uniform enough, and the comprehensive tension and cohesive force are poor in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a polytetrafluoroethylene fiber filter material comprises the following specific components in percentage by weight: 30-40 parts of polytetrafluoroethylene, 20-30 parts of polyphenyl ester, 10-20 parts of adhesive and a proper amount of water.

Preferably, the polytetrafluoroethylene, the polyphenyl ester, the adhesive and the water are used for preparing polytetrafluoroethylene fiber filtrate, and the specific preparation steps of the polytetrafluoroethylene fiber filtrate are as follows: mixing polytetrafluoroethylene, polyphenyl ester and adhesive, stirring for 3-5 min, adding water, stirring thoroughly until the mixture is completely mixed to obtain polytetrafluoroethylene fiber filtrate.

Preferably, the polytetrafluoroethylene fiber filter material comprises the following specific components in percentage by weight: 30 parts of polytetrafluoroethylene, 20 parts of polyphenyl ester, 10 parts of adhesive and a proper amount of water.

Preferably, the polytetrafluoroethylene fiber filter material comprises the following specific components in percentage by weight: 35 parts of polytetrafluoroethylene, 25 parts of polyphenyl ester, 15 parts of adhesive and a proper amount of water.

Preferably, the polytetrafluoroethylene fiber filter material comprises the following specific components in percentage by weight: 40 parts of polytetrafluoroethylene, 30 parts of polyphenyl ester, 20 parts of adhesive and a proper amount of water.

Preferably, a method for using the polytetrafluoroethylene fiber filter material as defined in claims 1-5, the filtrate prepared from the polytetrafluoroethylene fiber filter material is specifically used in the following steps:

humidifying: firstly, placing filter cloth at the upper end of a lapping machine, lapping the filter cloth to enable the filter cloth to be tidy, then conveying the filter cloth into a humidifying device, keeping the temperature of the humidifying device at 10-20 ℃, and continuously humidifying the filter cloth for 30-40 minutes;

drafting: placing the humidified filter cloth into a drafting force device for stretching, and additionally arranging a roller pre-needling machine in the drafting force device to further process the filter cloth through stretching and pre-needling;

soaking and coating: placing the treated filter cloth into a soaking container, pouring polytetrafluoroethylene fiber filtrate into the container, heating the filtrate by a heating device, stopping heating when the temperature rises to 20-25 ℃, soaking the filter cloth in the filtrate for 2-3 hours, taking out the filter cloth after soaking, placing the filter cloth in an outdoor airing device, keeping the airing temperature at 20-30 ℃, continuously airing for 10-12 hours, coating the surface of the filter cloth for 3-5 times by the filtrate after airing, placing the filter cloth into a drying device after coating, adjusting the temperature of the drying device to 20-25 ℃, and continuously drying for 1-2 hours to obtain the polytetrafluoroethylene fiber filter cloth.

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

the filter cloth is processed by the steps of humidification, drafting and soaking coating, so that the average gram weight of the filter cloth is uniform, the light transmittance is uniform, the comprehensive tension and the cohesive force are effectively improved.

Drawings

FIG. 1 is a composition diagram of a polytetrafluoroethylene fiber filter material;

FIG. 2 is a flow chart of the processing of the polytetrafluoroethylene fiber filter cloth.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a polytetrafluoroethylene fiber filter material comprises the following specific components in percentage by weight: 30-40 parts of polytetrafluoroethylene, 20-30 parts of polyphenyl ester, 10-20 parts of adhesive and a proper amount of water.

The polytetrafluoroethylene, the polyphenyl ester, the adhesive and the water are used for preparing polytetrafluoroethylene fiber filtrate, and the specific preparation step flow of the polytetrafluoroethylene fiber filtrate is as follows: mixing polytetrafluoroethylene, polyphenyl ester and adhesive, stirring for 3-5 min, adding water, stirring thoroughly until the mixture is completely mixed to obtain polytetrafluoroethylene fiber filtrate.

The polytetrafluoroethylene fiber filter material comprises the following specific components in percentage by weight: 30 parts of polytetrafluoroethylene, 20 parts of polyphenyl ester, 10 parts of adhesive and a proper amount of water.

The polytetrafluoroethylene fiber filter material comprises the following specific components in percentage by weight: 35 parts of polytetrafluoroethylene, 25 parts of polyphenyl ester, 15 parts of adhesive and a proper amount of water.

The polytetrafluoroethylene fiber filter material comprises the following specific components in percentage by weight: 40 parts of polytetrafluoroethylene, 30 parts of polyphenyl ester, 20 parts of adhesive and a proper amount of water.

A method for using the polytetrafluoroethylene fiber filter material as defined in claims 1-5, wherein the filtrate prepared from the polytetrafluoroethylene fiber filter material is prepared by the following steps:

humidifying: firstly, placing filter cloth at the upper end of a lapping machine, lapping the filter cloth to enable the filter cloth to be tidy, then conveying the filter cloth into a humidifying device, keeping the temperature of the humidifying device at 10-20 ℃, and continuously humidifying the filter cloth for 30-40 minutes;

drafting: placing the humidified filter cloth into a drafting force device for stretching, and additionally arranging a roller pre-needling machine in the drafting force device to further process the filter cloth through stretching and pre-needling;

soaking and coating: placing the treated filter cloth into a soaking container, pouring polytetrafluoroethylene fiber filtrate into the container, heating the filtrate by a heating device, stopping heating when the temperature rises to 20-25 ℃, soaking the filter cloth in the filtrate for 2-3 hours, taking out the filter cloth after soaking, placing the filter cloth in an outdoor airing device, keeping the airing temperature at 20-30 ℃, continuously airing for 10-12 hours, coating the surface of the filter cloth for 3-5 times by the filtrate after airing, placing the filter cloth into a drying device after coating, adjusting the temperature of the drying device to 20-25 ℃, and continuously drying for 1-2 hours to obtain the polytetrafluoroethylene fiber filter cloth.

Example 1:

the specific using method of the filtrate prepared by the polytetrafluoroethylene fiber filter material comprises the following steps:

humidifying: firstly, placing filter cloth at the upper end of a lapping machine, lapping the filter cloth to enable the filter cloth to be tidy, then conveying the filter cloth into a humidifying device, keeping the temperature of the humidifying device at 10 ℃, and continuously humidifying the filter cloth for 30 minutes;

drafting: placing the humidified filter cloth into a drafting force device for stretching, and additionally arranging a roller pre-needling machine in the drafting force device to further process the filter cloth through stretching and pre-needling;

soaking and coating: placing the treated filter cloth into a soaking container, pouring polytetrafluoroethylene fiber filtrate into the container, heating the filtrate by a heating device, stopping heating when the temperature rises to 20 ℃, soaking the filter cloth in the filtrate for 2 hours, taking out the filter cloth after soaking, placing the filter cloth in the outdoor for airing, keeping the airing temperature at 20 ℃, continuously airing for 10 hours, coating the surface of the filter cloth for 3 times by the filtrate again after airing, placing the filter cloth into a drying device after coating, adjusting the temperature of the drying device to 20 ℃, and continuously drying for 1 hour to obtain the polytetrafluoroethylene fiber filter cloth;

example 2:

the specific using method of the filtrate prepared by the polytetrafluoroethylene fiber filter material comprises the following steps:

humidifying: firstly, placing filter cloth at the upper end of a lapping machine, lapping the filter cloth to enable the filter cloth to be tidy, then conveying the filter cloth into a humidifying device, keeping the temperature of the humidifying device at 15 ℃, and continuously humidifying the filter cloth for 35 minutes;

drafting: placing the humidified filter cloth into a drafting force device for stretching, and additionally arranging a roller pre-needling machine in the drafting force device to further process the filter cloth through stretching and pre-needling;

soaking and coating: placing the treated filter cloth into a soaking container, pouring polytetrafluoroethylene fiber filtrate into the container, heating the filtrate by a heating device, stopping heating when the temperature rises to 23 ℃, soaking the filter cloth in the filtrate for 2.5 hours, taking out after soaking, placing the filter cloth in the outdoor for airing, keeping the airing temperature at 25 ℃, continuously airing for 11 hours, coating the surface of the filter cloth for 4 times by the filtrate again after airing, placing the filter cloth into a drying device after coating, adjusting the temperature of the drying device to 23 ℃, and continuously drying for 1.5 hours to obtain the polytetrafluoroethylene fiber filter cloth;

example 3:

the specific using method of the filtrate prepared by the polytetrafluoroethylene fiber filter material comprises the following steps:

humidifying: firstly, placing filter cloth at the upper end of a lapping machine, lapping the filter cloth to enable the filter cloth to be tidy, then conveying the filter cloth into a humidifying device, keeping the temperature of the humidifying device at 20 ℃, and continuously humidifying the filter cloth for 40 minutes;

drafting: placing the humidified filter cloth into a drafting force device for stretching, and additionally arranging a roller pre-needling machine in the drafting force device to further process the filter cloth through stretching and pre-needling;

soaking and coating: placing the treated filter cloth into a soaking container, pouring polytetrafluoroethylene fiber filtrate into the container, heating the filtrate through a heating device, stopping heating when the temperature rises to 25 ℃, soaking the filter cloth in the filtrate for 3 hours, taking out the filter cloth after soaking, placing the filter cloth in an outdoor airing, keeping the temperature of the airing at 30 ℃, continuously airing for 12 hours, coating the surface of the filter cloth for 5 times through the filtrate again after the airing, placing the filter cloth into a drying device after the coating is finished, adjusting the temperature of the drying device to 25 ℃, and continuously drying for 2 hours to obtain the polytetrafluoroethylene fiber filter cloth.

While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

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.