CN115368021A - Corrosion-resistant glass fiber and production method and application thereof - Google Patents
Corrosion-resistant glass fiber and production method and application thereof Download PDFInfo
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- CN115368021A CN115368021A CN202210069343.8A CN202210069343A CN115368021A CN 115368021 A CN115368021 A CN 115368021A CN 202210069343 A CN202210069343 A CN 202210069343A CN 115368021 A CN115368021 A CN 115368021A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/001—Alkali-resistant fibres
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/022—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from molten glass in which the resultant product consists of different sorts of glass or is characterised by shape, e.g. hollow fibres, undulated fibres, fibres presenting a rough surface
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/10—Non-chemical treatment
- C03B37/12—Non-chemical treatment of fibres or filaments during winding up
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/18—Stirring devices; Homogenisation
- C03B5/183—Stirring devices; Homogenisation using thermal means, e.g. for creating convection currents
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/12—General methods of coating; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/40—Organo-silicon compounds
Abstract
The invention provides a corrosion-resistant glass fiber which has good acid and alkali resistance and high tensile strength and can produce low linear density fiber, which is used for solving the defect that the alkali-free glass component in the prior art has insufficient acid and alkali resistance and can not be applied to an alkali environment, and comprises the following components in percentage by mass: siO 2 2 ：55～69%；MgO：1%～2.1%；CaO：9.3～12.5%；Na 2 O：10～12%；K 2 O：0.8～2.5%；Al 2 O 3 ：9.5～15%；Fe 2 O 3 :0.4 to 0.9 percent; the balance of impurities, which is obtained by mixing the following raw materials of quartz sand: 8-11, nano feldspar: 65-68.5, limestone: 16.5-19, dolomite: 5.3-7, soda: 10.5 to 12, fluorite: 1.5 to 3.5; mirabilite: 0.5 to 2.5 portions of the raw materials are crushed and added into a stirrer to be uniformly stirred, and then the mixture is put into a gas-electric kiln to be melted and drawn to obtain the product. The yarn produced by the invention has excellent performance, the tensile strength reaches 3500MPa, the corrosion resistance loss rate is less than 40 percent, the acid resistance loss rate is less than 30 percent, the fiber density is about 3 percent lower than that of alkali-free glass fiber, and the yarn can be used for weaving mesh cloth, window screening and filter bags.
Description
Technical Field
The invention belongs to the technical field of glass fiber production, and particularly relates to a corrosion-resistant glass fiber and a production method thereof.
Background
At present, common glass fibers are C glass fibers and E glass fibers. The glass component of the glass fiber is about 12 percent of alkali metal oxide, and the glass fiber is poor in water resistance and alkali resistance, the glass fiber is alkali-free glass fiber and is mainly used for reinforcing an electric insulating material, the glass component of the glass fiber does not contain alkali metal oxide, the glass fiber is excellent in acid resistance but not alkali resistance, and the glass fiber cannot be applied to an alkali environment and can not be used for producing low linear density fiber.
Disclosure of Invention
The invention aims to overcome the defects that alkali-free glass components in the prior art are insufficient in acid resistance and alkali resistance and cannot be applied to an alkali environment, and provides the corrosion-resistant glass fiber which is good in acid resistance and alkali resistance, high in tensile strength and capable of producing low-linear-density fibers.
In order to realize the purpose, the technical scheme provided by the invention is as follows:
in a first aspect, the invention provides a corrosion-resistant glass fiber, which comprises the following components in percentage by mass:
SiO 2 ：55～69％；MgO：1％～2.1％；CaO：9.3～12.5％；Na 2 O：10～12％；K 2 O：0.8～2.5％； Al 2 O 3 ：9.5～15％；Fe 2 O 3 :0.4 to 0.9 percent; the balance being impurities.
Preferably, the corrosion-resistant glass fiber provided by the invention comprises the following components in percentage by mass:
SiO 2 ：57～67％；MgO：1.2％～2％；CaO：9.8～12.2％；Na 2 O：10.5～11.7％；K 2 O：1～2.3％； Al 2 O 3 ：10～14％；Fe 2 O 3 :0.5 to 0.8 percent; the balance being impurities.
Preferably, the corrosion-resistant glass fiber provided by the invention comprises the following components in percentage by mass:
SiO 2 ：59～64％；MgO：1.5％～1.8％；CaO：10.2～11.5％；Na 2 O：11～11.2％；K 2 O：1.5～ 2％；Al 2 O 3 ：11.2～13.8％；Fe 2 O 3 :0.6 to 0.7 percent; the balance being impurities.
In a second aspect, the present invention provides a method for producing the above corrosion-resistant glass fiber, comprising the following process steps:
1) The raw materials comprise the following components in parts by weight:
quartz sand: 8-11, nano feldspar: 65-68.5, limestone: 16.5-19, dolomite: 5.3-7, soda: 10.5 to 12, fluorite: 1.5 to 3.5; mirabilite: 0.5 to 2.5;
2) Crushing the raw materials into 100-200 meshes, adding the raw materials into a stirrer, uniformly stirring, and then putting the mixture into a gas-electric kiln to melt and draw the mixture into a corrosion-resistant glass fiber spun yarn with the diameter of 7-9 mu m; the temperature of a melting zone in the gas-electric kiln is controlled to be 1400-1500 ℃, the temperature of a clarification and homogenization zone is controlled to be 1250-1300 ℃, and the temperature of a platinum-rhodium alloy bushing plate in an operation zone is controlled to be 1180-1220 ℃;
3) Coating a layer of polymer impregnating compound on the surface of the corrosion-resistant glass fiber spun yarn in the drawing process;
4) Placing the drawn corrosion-resistant glass fiber spun yarn at normal temperature for conditioning for 12-24 hours to control the surface water content to be less than or equal to 5%;
5) And twisting the conditioned corrosion-resistant glass fiber spun yarn protofilaments into yarns with the twist number of 25-35 by using twisting equipment, wherein the twisting direction is Z twisting.
Preferably, the glass liquidus temperature of the operation area in the step 2) is controlled to be 1100-1150 ℃.
Preferably, the raw materials in the step 1) are as follows in parts by weight:
quartz sand: 8.5-10.4, nano feldspar: 65.5-68, limestone: 17-18.5, dolomite: 6-6.8, soda: 10.7 to 11.8, fluorite: 2 to 3; mirabilite: 1 to 2.
Preferably, the raw materials in the step 1) are as follows in parts by weight:
quartz sand: 9-10, nano feldspar: 66.5-67, limestone: 17.5-18, dolomite: 6.3-6.5, sodium carbonate: 11 to 11.5, fluorite: 2.5 to 2.8; mirabilite: 1.3 to 1.8.
Preferably, the step 5) is specifically: the prepared corrosion-resistant glass fiber spun yarn protofilaments are placed on a twisting machine support or a platform in order, 2 found yarn ends are led out, the yarn ends respectively bypass a 8-shaped hook tension rod, a roller rear tension rod, a transverse yarn guide hook, a lower upper roller and a fender yarn guide hook in parallel and tightly, the yarn is wound on a spindle blade and is unwound on a yarn bobbin during high-speed rotation, the twisting direction is Z-shaped twisting, and the twist is 25-35.
Preferably, the polymer impregnating compound in the step 3) is a polymer emulsion composed of a main film forming agent, an auxiliary film forming agent, a lubricant, an antistatic agent, a coupling agent and water; the main film-forming agent adopts modified vinyl acetate-acrylate copolymer emulsion; the auxiliary film-forming agent adopts water-soluble epoxy resin; the lubricant adopts alkyl ester imidazoline carboxylate; the antistatic agent is one or two of fatty acid ester and ethoxy amide; the coupling agent is silane coupling agent.
Preferably, the antistatic agent is mixed by fatty acid ester and ethoxylated amide; the weight ratio of the ethoxy amide to the fatty acid ester is 1.
Preferably, the coupling agent is aminopropyltriethoxysilane coupling agent.
Preferably, the ratio of the components of the polymer emulsion is as follows: the main film forming agent and the auxiliary film forming agent are as follows: lubricant, antistatic agent, coupling agent and water are 14-16: 7-9: 0.8-1: 0.3-0.4: 75.
In a third aspect, the present invention provides the use of the above corrosion-resistant glass fiber in corrosion-resistant industrial fabrics (e.g., filter bags, mesh fabrics, window screens, etc.).
The invention provides a corrosion-resistant glass fiber formula, which belongs to Na 2 O-CaO-SiO 2 -Al 2 O 3 Quaternary system in the definition of fourOn the basis of the content and the mutual proportion of the components, the corrosion resistance of the glass fiber is improved, the mass proportion relation among the components is adjusted and optimized, and Al is increased in the formula 2 O 3 Content of Al in the composition of the present invention 2 O 3 /Na 2 The O value is selected to be 1.1-1.6, so that the crystallization temperature of the glass is effectively reduced, and the durability of the glass is improved. The inventor researches and discovers that the existence of Fe in glass has great influence on the heat transfer property of glass color and glass, and in order to ensure that the glass has good wire drawing stability, accelerate the forming wire root speed of the glass and improve the iron content in the glass, the Fe in the corrosion-resistant glass fiber component provided by the invention 2 O 3 The content is obviously increased, and the hardening speed of the fiber roots is accelerated when the glass fiber is formed. Introduction of small amount of alkali metal oxide K 2 O reduces the melting temperature and viscosity of the glass and reduces the devitrification capability. Simultaneously increases the content of Ca, ca and Na 2 The O forms mixed alkali effect, has positive effects of improving the chemical stability and hardness of the glass, reducing the crystallization capacity of the glass and protecting the glass framework, and can increase the gloss of the glass to obviously improve the performance of the glass. In the production method provided by the invention, the difference between the fiber forming temperature and the liquid phase temperature is 70-80 ℃, and the production method has good filamentation requirements. The glass fiber forming temperature is as follows: 1180-1220 ℃, and the liquid phase temperature is as follows: 1100-1150 ℃. The corrosion-resistant glass fiber provided by the invention does not contain boron and fluorine and harmful clarifying agent.
The yarn produced by the invention has excellent performance, the tensile strength reaches 3500MPa, the corrosion resistance loss rate is less than 40 percent, the acid resistance loss rate is less than 30 percent, the fiber density is about 3 percent lower than that of alkali-free glass fiber, and the yarn can be used for weaving mesh cloth, window screening and filter bags.
The corrosion-resistant glass fiber provided by the invention is a modified C glass fiber, and the component composition of the modified C glass fiber contains Al 2 O 3 /Na 2 The O value is greatly improved, so that the glass structure is more stable, the acid resistance is superior to that of C glass fiber and that of E glass fiber, the alkali resistance is superior to that of C glass fiber and that of E glass fiber and is close to that of ECR glass fiber and E glass fiber; is more resistant to hydrolysis than medium alkali glass fiber under high humidity condition. Tensile strength is better thanMedium alkali glass fiber and common alkali-free glass fiber; excellent fracture strain performance and good toughness. The corrosion-resistant glass fiber has the advantages of environment-friendly production process, high forming efficiency, good mechanical property, light weight and good acid and alkali resistance, can completely replace medium-alkali glass fiber, and has better performance; the glass fiber can replace the common E glass fiber in the occasions with low electrical property requirements, the acid resistance and the mechanical property are greatly improved, the fine fiber forming property and the weaving property are good, and the glass fiber has incomparable advantages in the field of corrosion-resistant industrial fabrics. The acid-resistant and acid-resistant composite material has good application in the fields of chemical conveying pipelines and storage tanks, acid-resistant filter bags, screen cloth, window screens and the like.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
Example 1:
the corrosion-resistant glass fiber is produced by the following steps:
1) The raw materials comprise the following components in parts by weight: quartz sand: 10.5, nano feldspar: 66.5, limestone: 17.8, dolomite: 6.3, soda: 11, fluorite: 1.9; mirabilite: 1.
2) Crushing the raw materials into 100-200 meshes, adding the raw materials into a stirrer, stirring the mixture evenly, putting the mixture into a gas-electric kiln, and melting and drawing the mixture into corrosion-resistant glass fiber fine powder with the diameter of 7 mu mYarn of SiO composition 2 ：63.3％；MgO：1.1％；CaO：11.5％；Na 2 O： 10.5％；K 2 O：2％；Al 2 O 3 ：11％；Fe 2 O 3 :0.5 percent; the balance being impurities.
The temperature of the melting zone in the gas-electric kiln is controlled to be 1400-1500 ℃, the temperature of the clarification and homogenization zone is controlled to be 1250-1300 ℃, the temperature of the platinum-rhodium alloy bushing plate in the operation zone is controlled to be 1180-1220 ℃, and the temperature of the glass liquid phase in the operation zone is controlled to be 1100-1150 ℃.
3) Coating a layer of polymer impregnating compound on the surface of the corrosion-resistant glass fiber spun yarn in the drawing process; the polymer impregnating compound is a polymer emulsion composed of a main film-forming agent, an auxiliary film-forming agent, a lubricant, an antistatic agent, a coupling agent and water; the main film forming agent adopts modified vinyl acetate-acrylate copolymer emulsion; the auxiliary film-forming agent adopts water-soluble epoxy resin; the lubricant adopts alkyl ester imidazoline carboxylate; the antistatic agent adopts fatty acid ester; the coupling agent is a silane coupling agent. The high molecular emulsion comprises the following components in percentage by weight: the main film forming agent and the auxiliary film forming agent are as follows: lubricant, antistatic agent, coupling agent, water = 15: 8: 1: 0.4: 75.
4) The drawn corrosion-resistant glass fiber spun yarn is conditioned for 12 to 24 hours at normal temperature, so that the surface water content is less than or equal to 5 percent.
5) The prepared corrosion-resistant glass fiber spun yarn protofilaments are placed on a twisting machine support in order, 2 found yarn ends are led out, the yarn ends respectively bypass a 8-shaped hook tension rod, a roller rear tension rod, a transverse yarn guide hook, a lower upper roller and a fender yarn guide hook in parallel and tightly, the yarn is wound on a spindle blade and is unwound on a yarn bobbin during high-speed rotation, the twisting direction is Z-twisting, and the twist is 35.
And (3) detecting a product:
detection of alkali resistance in alkaline environment:
| standard of merit | Sample immersion conditions | pH value of alkali solution | Alkali-resistant retention rate |
| JC/T841-2007 | 5% NaOH solution by soaking at room temperature for 28 days | 14 or more | 70％ |
| JG158-2013 | Soaking 10% of cement filtrate in water at 80 deg.C for 4 hr | 12 or more | 68％ |
Acid resistance in an acidic environment:
| sample soaking conditions | Retention of acid resistance |
| 20％H 2 SO 4 Soaking the solution at room temperature for 3 days | 83％ |
| 20％H 2 SO 4 Soaking the solution at room temperature for 7 days | 80％ |
| 20％H 2 SO 4 Soaking the solution at room temperature for 14 days | 75％ |
Example 2:
the corrosion-resistant glass fiber is produced by the following steps:
1) The raw materials comprise the following components in parts by weight: quartz sand: 9.1, nano feldspar: 67, limestone: 17.5, dolomite: 6, soda ash: 11.2, fluorite: 3; mirabilite: 1.5.
2) The raw materials are crushed, mixed, added into a stirrer, stirred uniformly, conveyed into a gas-electric kiln at 1400-1500 ℃ to be melted, and drawn into corrosion-resistant glass fiber spun yarn with the diameter of 9 mu m, and the component is SiO 2 ：64％；MgO：1.5％；CaO： 10％；Na 2 O：10.6％；K 2 O：1％；Al 2 O 3 ：12％；Fe 2 O 3 :0.8 percent; the balance being impurities.
The temperature of the melting zone in the gas-electric kiln is controlled to be 1400-1500 ℃, the temperature of the clarification and homogenization zone is controlled to be 1250-1300 ℃, the temperature of the platinum-rhodium alloy bushing plate in the operation zone is controlled to be 1180-1220 ℃, and the temperature of the glass liquid phase in the operation zone is controlled to be 1100-1150 ℃.
3) Coating a layer of polymer impregnating compound on the surface of the corrosion-resistant glass fiber spun yarn in the drawing process; the polymer impregnating compound is a polymer emulsion composed of a main film-forming agent, an auxiliary film-forming agent, a lubricant, an antistatic agent, a coupling agent and water; the main film-forming agent adopts modified vinyl acetate-acrylate copolymer emulsion; the auxiliary film-forming agent adopts water-soluble epoxy resin; the lubricant adopts alkyl ester imidazoline carboxylate; the antistatic agent is mixed by fatty acid ester and ethoxy amide; the weight ratio of ethoxylated amide to fatty acid ester is 1. The coupling agent is a silane coupling agent. The high molecular emulsion comprises the following components in percentage by weight: the main film forming agent and the auxiliary film forming agent are as follows: lubricant, antistatic agent, coupling agent, water = 14: 9: 0.8: 0.3: 0.4: 75.
4) The drawn corrosion-resistant glass fiber spun yarn is conditioned for 12 to 24 hours at normal temperature, so that the surface water content is controlled to be less than or equal to 5 percent.
5) The prepared corrosion-resistant glass fiber spun yarn protofilaments are placed on a twisting machine support in order, 2 found yarn ends are led out, the obtained yarn ends are parallelly and tightly wound around an 8-shaped hook tension rod, a roller rear tension rod, a transverse moving yarn guide hook, a lower upper roller and a lappet yarn guide hook respectively, the yarn is wound on a spindle blade and is unwound on a yarn bobbin during high-speed rotation, the twisting direction is Z twisting, and the twist is 25.
And (3) detecting a product:
detection of alkali resistance in alkaline environment:
| standard of reference | Sample immersion conditions | pH of alkaline solution | Alkali-resistant retention rate |
| JC/T841-2007 | 5% NaOH solution by soaking at room temperature for 28 days | 14 or more | 65％ |
| JG158-2013 | Soaking 10% of cement filtrate in water at 80 deg.C for 4 hr | 12 or more | 61％ |
Acid resistance was tested in an acidic environment:
| sample soaking conditions | Retention of acid resistance |
| 20％H 2 SO 4 Soaking the solution at room temperature for 3 days | 81％ |
| 20％H 2 SO 4 Soaking the solution at room temperature for 7 days | 79％ |
| 20％H 2 SO 4 Soaking the solution at room temperature for 14 days | 73％ |
Example 3:
the corrosion-resistant glass fiber is produced by the following steps:
1) The raw materials comprise the following components in parts by weight: quartz sand: 10, nano feldspar: 67, limestone: 18, dolomite: 6.3, soda: 11.5, fluorite: 2.7; mirabilite: 1.8.
2) The raw materials are crushed, mixed, added into a stirrer, uniformly stirred, conveyed into a gas-electric kiln at 1400-1500 ℃ to be melted, and drawn into corrosion-resistant glass fiber spun yarn with the diameter of 8 mu m, and the corrosion-resistant glass fiber spun yarn comprises the following components: siO 2 2 ：61.2％；MgO：1.5％；CaO： 10.5％；Na 2 O：11％；K 2 O：2％；Al 2 O 3 ：13％；Fe 2 O 3 :0.7 percent; the balance being impurities.
The temperature of the melting zone in the gas-electric kiln is controlled to be 1400-1500 ℃, the temperature of the clarification and homogenization zone is controlled to be 1250-1300 ℃, the temperature of the platinum-rhodium alloy bushing plate in the operation zone is controlled to be 1180-1220 ℃, and the temperature of the glass liquid phase in the operation zone is controlled to be 1100-1150 ℃.
3) Coating a layer of polymer impregnating compound on the surface of the corrosion-resistant glass fiber spun yarn in the drawing process; the polymer impregnating compound is a polymer emulsion composed of a main film-forming agent, an auxiliary film-forming agent, a lubricant, an antistatic agent, a coupling agent and water; the main film-forming agent adopts modified vinyl acetate-acrylate copolymer emulsion; the auxiliary film-forming agent adopts water-soluble epoxy resin; the lubricant adopts alkyl ester imidazoline carboxylate; the antistatic agent is mixed by fatty acid ester and ethoxy amide; the weight ratio of ethoxylated amide to fatty acid ester is 1. The coupling agent adopts aminopropyl triethoxysilane coupling agent. The high molecular emulsion comprises the following components in percentage by weight: the main film forming agent and the auxiliary film forming agent are as follows: lubricant to antistatic agent to coupling agent to water = 16: 7: 1: 0.4: 0.3: 75.
4) The drawn corrosion-resistant glass fiber spun yarn is conditioned for 12 to 24 hours at normal temperature, so that the surface water content is controlled to be less than or equal to 5 percent.
5) The prepared corrosion-resistant glass fiber spun yarn protofilaments are placed on a twisting machine support in order, 2 found yarn ends are led out, the obtained yarn ends are parallelly and tightly wound around an 8-shaped hook tension rod, a roller rear tension rod, a transverse moving yarn guide hook, a lower upper roller and a lappet yarn guide hook respectively, the yarn is wound on a spindle blade and is unwound on a yarn bobbin during high-speed rotation, the twisting direction is Z twisting, and the twist is 30.
And (3) detecting a product:
detection of alkali resistance in alkaline environment:
| standard of merit | Sample soaking conditions | pH of alkaline solution | Alkali-resistant retention rate |
| JC/T841-2007 | 5% NaOH solution by soaking at room temperature for 28 days | 14 or more | 68％ |
| JG158-2013 | Soaking 10% of cement filtrate at 80 deg.C for 4 hr | 12 or more | 65％ |
Acid resistance in an acidic environment:
| sample soaking conditions | Retention of acid resistance |
| 20％H 2 SO 4 Soaking the solution at room temperature for 3 days | 83％ |
| 20％H 2 SO 4 Soaking the solution at room temperature for 7 days | 80％ |
| 20％H 2 SO 4 Soaking the solution at room temperature for 14 days | 75％ |
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A corrosion resistant glass fiber characterized by: the composition comprises the following components in percentage by mass:
SiO 2 ：55～69%；MgO：1%～2.1%；CaO：9.3～12.5%；Na 2 O：10～12%；K 2 O：0.8～2.5%；Al 2 O 3 ：9.5～15%；Fe 2 O 3 :0.4 to 0.9 percent; the balance being impurities.
2. The corrosion-resistant glass fiber of claim 1, wherein: the composition comprises the following components in percentage by mass:
SiO 2 ：57～67%；MgO：1.2%～2%；CaO：9.8～12.2%；Na 2 O：10.5～11.7%；K 2 O：1～2.3%；Al 2 O 3 ：10～14%；Fe 2 O 3 :0.5 to 0.8 percent; the balance being impurities.
3. The corrosion-resistant glass fiber of claim 1, wherein: the composition comprises the following components in percentage by mass:
SiO 2 ：59～64%；MgO：1.5%～1.8%；CaO：10.2～11.5%；Na 2 O：11～11.2%；K 2 O：1.5～2%；Al 2 O 3 ：11.2～13.8%；Fe 2 O 3 :0.6 to 0.7 percent; the rest isImpurities.
4. A method of producing the corrosion-resistant glass fiber of any one of claims 1 to 3, wherein: the method comprises the following process steps:
1) The raw materials comprise the following components in parts by weight:
quartz sand: 8-11, nano feldspar: 65-68.5, limestone: 16.5-19, dolomite: 5.3-7, soda: 10.5 to 12, fluorite: 1.5 to 3.5; mirabilite: 0.5 to 2.5;
2) Crushing the raw materials into 100-200 meshes, adding the raw materials into a stirrer, uniformly stirring, and then putting the mixture into a gas-electric kiln to melt and draw the mixture into a corrosion-resistant glass fiber spun yarn with the diameter of 7-9 mu m; the temperature of a melting zone in the gas-electric kiln is controlled to be 1400-1500 ℃, the temperature of a clarification homogenization zone is controlled to be 1250-1300 ℃, and the temperature of a platinum-rhodium alloy bushing plate in an operation zone is controlled to be 1180-1220 ℃;
3) Coating a layer of polymer impregnating compound on the surface of the corrosion-resistant glass fiber spun yarn in the drawing process;
4) The drawn corrosion-resistant glass fiber spun yarn is conditioned for 12 to 24 hours at normal temperature, so that the surface water content is controlled to be less than or equal to 5 percent;
5) Twisting the conditioned corrosion-resistant glass fiber spun yarn precursor into a yarn with the twist degree of 25-35 by a twisting device, wherein the twisting direction is Z twisting.
5. The method of producing corrosion-resistant glass fibers of claim 4, wherein: the glass liquid phase temperature of the operation area in the step 2) is controlled to be 1100-1150 ℃.
6. The method of producing corrosion-resistant glass fibers of claim 4, wherein: the raw materials in the step 1) are as follows in parts by weight:
quartz sand: 8.5-10.4, nano feldspar: 65.5-68, limestone: 17-18.5, dolomite: 6-6.8, sodium carbonate: 10.7 to 11.8, fluorite: 2 to 3; mirabilite: 1 to 2.
7. The method for producing corrosion-resistant glass fibers of claim 4, wherein: the raw materials in the step 1) are as follows in parts by weight:
quartz sand: 9-10, nano feldspar: 66.5-67, limestone: 17.5-18, dolomite: 6.3-6.5, sodium carbonate: 11 to 11.5, fluorite: 2.5 to 2.8; mirabilite: 1.3 to 1.8.
8. The method of producing corrosion-resistant glass fibers of claim 4, wherein: the polymer impregnating compound in the step 3) is a polymer emulsion composed of a main film-forming agent, an auxiliary film-forming agent, a lubricant, an antistatic agent, a coupling agent and water; the main film-forming agent adopts modified vinyl acetate-acrylate copolymer emulsion; the auxiliary film-forming agent adopts water-soluble epoxy resin; the lubricant adopts alkyl ester imidazoline carboxylate; the antistatic agent is one or two of fatty acid ester and ethoxy amide; the coupling agent is silane coupling agent.
9. The method of producing corrosion-resistant glass fibers of claim 8, wherein: the antistatic agent is prepared by mixing fatty acid ester and ethoxy amide; the weight ratio of the ethoxylated amide to the fatty acid ester is 1 to 8-10.
10. Use of the corrosion resistant glass fiber of any one of claims 1 to 3 in corrosion resistant industrial fabrics.
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