阅读说明：本技术 用于高温烟气除尘的玄武岩纤维机织布及其制备方法 (Basalt fiber woven fabric for high-temperature flue gas dust removal and preparation method thereof ) 是由 姜昊 罗洪杰 张鸿帅 王诏田 于 2020-07-16 设计创作，主要内容包括：本发明实施例公开了一种用于高温烟气除尘的玄武岩纤维机织布及其制备方法,所述玄武岩纤维机织布包括玄武岩纤维基布和覆盖于所述玄武岩基布表面的涂层膜；其中,所述玄武岩纤维基布是复合纤维纱线交错编制形成；所述复合纤维纱线是由玄武岩纤维纱线和聚四氟乙烯纤维纱线并线形成。本发明的玄武岩纤维机织布具有耐弯折、耐酸碱、耐湿和高温下强度保留率高、机织物的使用寿命等优点。(The embodiment of the invention discloses basalt fiber woven fabric for high-temperature flue gas dust removal and a preparation method thereof, wherein the basalt fiber woven fabric comprises basalt fiber base cloth and a coating film covering the surface of the basalt fiber base cloth; the basalt fiber base cloth is formed by interweaving composite fiber yarns; the composite fiber yarn is formed by combining basalt fiber yarn and polytetrafluoroethylene fiber yarn. The basalt fiber woven fabric has the advantages of bending resistance, acid and alkali resistance, high strength retention rate under moisture resistance and high temperature, long service life of woven fabric and the like.)

1. The basalt fiber woven fabric for dedusting high-temperature flue gas is characterized by comprising basalt fiber base cloth and a coating film covering the surface of the basalt fiber base cloth; the basalt fiber base cloth is formed by interweaving composite fiber yarns; the composite fiber yarn is formed by combining basalt fiber yarn and polytetrafluoroethylene fiber yarn.

2. The basalt fiber woven cloth for dedusting high temperature flue gas according to claim 1,

the basalt fiber yarn is formed by twisting a plurality of strands of basalt fibers, and the diameter of each basalt fiber is 5-13 mu m.

3. The basalt fiber woven cloth for dedusting high temperature flue gas according to claim 1,

the polytetrafluoroethylene fiber yarn is formed by twisting a plurality of strands of polytetrafluoroethylene fibers, and the diameter of each polytetrafluoroethylene fiber is 1-50 mu m.

4. The basalt fiber woven cloth for dedusting high temperature flue gas according to claim 1,

in the composite fiber yarn, the ratio of the basalt fiber yarn to the polytetrafluoroethylene fiber yarn is 99:1-1: 1.

5. The basalt fiber woven cloth for dedusting high temperature flue gas according to claim 1,

the twist of the composite fiber yarn is 100-350 twist.

6. The basalt fiber woven cloth for dedusting high temperature flue gas according to claim 1,

the coating film includes a polytetrafluoroethylene film, a polyurethane film, and a polyimide film.

7. A method for preparing the basalt fiber woven fabric for high-temperature flue gas dust removal of claim 1, which is characterized by comprising the following steps:

combining the basalt fiber yarns and the polytetrafluoroethylene fiber yarns to form composite fiber yarns;

and weaving the composite fiber yarns in a staggered manner to form basalt fiber base cloth, and coating the coating film on the basalt fiber base cloth to form the basalt woven fabric.

8. The method of claim 7,

the basalt fiber yarn is prepared by dewaxing, twisting, dipping and baking basalt fibers.

9. The method of claim 7,

the composite fiber yarn is prepared by high-temperature heat setting treatment.

10. The method of claim 7,

the preparation method of the basalt fiber woven fabric further comprises the following steps:

immersing the basalt fiber woven fabric into a treating agent for treatment;

the treatment agent comprises a film forming agent, a nano-roughening agent and a softening agent;

wherein the film forming agent comprises one or more of acrylic resin, silicone-acrylic resin, styrene-acrylic resin, polyurethane and epoxy resin;

the roughening agent comprises one or more of silica sol, silicate aqueous solution and superfine graphite milk;

the softening agent comprises one or more of silicone oil, imidazoline lubricant, pentaerythritol stearate and pentaerythritol oleate.

Technical Field

The embodiment of the invention relates to the technical field of environment-friendly purification equipment, in particular to basalt fiber woven fabric for high-temperature flue gas dust removal and a preparation method thereof.

Background

The basalt fiber is a novel high-performance inorganic fiber prepared by taking natural basalt ore as a raw material through a wire drawing process, and the diameter of the basalt fiber is generally 7-13 mu m. The basalt fiber has the characteristics of no toxicity and harm to the environment, good high and low temperature resistance, high modulus, insulativity and the like. It is widely applied to reinforced composite materials, geotextiles, automobile curtain fabrics, filtration fields, ballistic protective fabrics and the like. In the field of high-temperature filter materials, the temperature resistance and the acid and alkali resistance of the basalt fiber are superior to those of glass fiber and other organic fibers, so that the service environment of the basalt fiber is more severe. However, basalt fibers are difficult to weave alone due to the defects of no crimp, difficult processing and the like of the fibers, and often need to be mixed with other fibers with crimp property to be processed into a high-temperature resistant filtering textile fabric, but the high-temperature resistance of the basalt fibers is also reduced after the soft fibers are added. In the temperature range of 300-350 ℃, the strength of the basalt fiber is rapidly attenuated, namely 40% in 1 hour and 80% in 3 hours. Furthermore, as the exposure time of the woven fabric in a high temperature environment is prolonged, the mechanical properties of the woven fabric are reduced, and the woven fabric is brittle and hard to withstand the pressure of high temperature smoke, resulting in local breakage. In the prior art, the filter material prepared by utilizing basalt fibers has the defects of poor high-temperature resistance, high fiber loss rate and low durability.

Disclosure of Invention

Therefore, the embodiment of the invention provides a basalt fiber woven fabric for high-temperature flue gas dust removal and a preparation method thereof, and aims to solve the problems of high temperature resistance and low durability of the woven fabric in the prior art.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

the basalt fiber woven fabric comprises basalt fiber base cloth and a coating film covering the surface of the basalt fiber base cloth; the basalt fiber base cloth is formed by interweaving composite fiber yarns; the composite fiber yarn is formed by combining basalt fiber yarn and polytetrafluoroethylene fiber yarn.

Preferably, the basalt fiber yarn is formed by twisting a plurality of basalt fibers, and the diameter of each basalt fiber is 5-13 mu m.

Preferably, the polytetrafluoroethylene fiber yarn is formed by twisting a plurality of polytetrafluoroethylene fibers, and the diameter of the polytetrafluoroethylene fibers is 1-50 μm.

Preferably, in the composite fiber yarn, the ratio of the basalt fiber yarn to the polytetrafluoroethylene fiber yarn is 99:1-1: 1.

Preferably, the twist of the composite fiber yarn is 100-350 twist.

Preferably, the coating film includes a polytetrafluoroethylene film, a polyurethane film, and a polyimide film.

The invention also provides a method for preparing the basalt fiber woven fabric for high-temperature flue gas dust removal, which is characterized by comprising the following steps of:

combining the basalt fiber yarns and the polytetrafluoroethylene fiber yarns to form composite fiber yarns;

and weaving the composite fiber yarns in a staggered manner to form basalt fiber base cloth, and coating the coating film on the basalt fiber base cloth to form the basalt woven fabric.

Preferably, the basalt fiber yarn is prepared by dewaxing, twisting, dipping and baking basalt fibers.

Preferably, the composite fiber yarn is prepared by high-temperature heat setting treatment.

Preferably, the basalt fiber woven fabric manufacturing method further comprises:

immersing the basalt fiber woven fabric into a treating agent for treatment;

the treatment agent comprises a film forming agent, a nano-roughening agent and a softening agent;

wherein the film forming agent comprises one or more of acrylic resin, silicone-acrylic resin, styrene-acrylic resin, polyurethane and epoxy resin;

the roughening agent comprises one or more of silica sol, silicate aqueous solution and superfine graphite milk;

the softening agent comprises one or more of silicone oil, imidazoline lubricant, pentaerythritol stearate and pentaerythritol oleate.

The embodiment of the invention has the following advantages:

the basalt fiber woven fabric has the advantages of bending resistance, acid and alkali resistance, high strength retention rate under moisture resistance and high temperature, long service life of woven fabric and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

Fig. 1 is a schematic structural view of a basalt fiber woven fabric for dedusting high-temperature flue gas according to an embodiment of the present invention, wherein a is a basalt fiber base fabric, B is a coating film, and C is a flue gas flowing direction;

fig. 2 is a schematic structural view of a basalt fiber woven fabric for high-temperature flue gas dust removal according to another embodiment of the present invention, wherein a is a basalt fiber base fabric, B is a coating film, and C is a flue gas flow direction.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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.