CN112677063A - High-strength antistatic coated abrasive cloth base and treatment process thereof - Google Patents
High-strength antistatic coated abrasive cloth base and treatment process thereof Download PDFInfo
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Abstract
The invention provides a treatment process of a high-strength antistatic coated abrasive cloth base, which comprises the following steps: s1, desizing; s2, preparing an antistatic dipping glue stock, an antistatic non-sand-planting surface scraping glue stock and an antistatic sand-planting surface scraping glue stock respectively; s3, dipping by adopting a dipping sizing material; s4, adopting a non-sand-planting surface scraping glue to scrape the non-sand-planting surface of the cloth base; s5, adopting a sand-planting surface scraping glue to scrape the sand-planting surface of the cloth base; and S6, carrying out ironing and shaping treatment and quick cooling and shaping treatment on the fabric base treated by the steps. The invention also provides a coated abrasive cloth base. Through dipping treatment, non-sand planting surface scraping coating and sand planting surface scraping coating, a conductive channel is formed from the non-sand planting surface to the sand planting surface of the treated cloth base, and the antistatic property of the cloth base is improved; the sizing material in the cloth base improves the mechanical strength of the cloth base; ironing and shaping and quick cooling and shaping treatment are carried out, so that the molecules of the fabric base are arranged in a directional manner in the shaping process, and the strength of the fabric base is improved.
Description
Technical Field
The invention relates to the technical field of grinding tools, in particular to a high-strength antistatic coated grinding tool cloth base and a treatment process thereof.
Background
Conventional antistatic coated abrasive cloth substrates are typically treated to resist static in two ways, such as: antistatic agent is added into the sizing material, and the conductive material or metal wires are added into the base material for antistatic treatment of the product. However, the metal wire is easy to discharge in the electrostatic field, which causes uneven sand planting or the inclination of the abrasive particles to affect the quality of the electrostatic sand planting. The antistatic agent and the conductive material added into the sizing material cannot achieve the expected effect because no path is formed inside the cloth base. In addition, the traditional cloth foundation reinforcement generally adopts thicker yarn count or density to improve the strength of the cloth foundation, but the yarn count and the density of the cloth foundation have certain limits, and cannot be increased continuously after reaching a certain value.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a treatment process of a high-strength antistatic coated abrasive cloth base, and the antistatic property and the strength of the treated cloth base are improved.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
The first purpose of the invention is to provide a treatment process of a high-strength antistatic coated abrasive cloth base, which comprises the following steps:
s1, desizing, padding the gray fabric with a desizing agent, cleaning with clear water, ironing and drying;
s2, preparing an antistatic dipping glue stock, an antistatic non-sand-planting surface scraping glue stock and an antistatic sand-planting surface scraping glue stock respectively;
s3, soaking the desized cloth base by using a soaking sizing material;
s4, adopting a non-sand-planting surface scraping glue to scrape the non-sand-planting surface of the cloth base;
s5, adopting a sand-planting surface scraping glue to scrape the sand-planting surface of the cloth base;
s6, carrying out ironing and shaping treatment and quick cooling and shaping treatment on the cloth base processed in the steps;
wherein the ironing and shaping treatment comprises the steps of placing the non-blade-coated surface of the fabric base under a first ironing roller to iron for 10-30 s, and controlling the ironing temperature to be 180-185 ℃; then, placing the scraped surface of the cloth base under a second ironing roller for ironing for 10-30 s, and controlling the ironing temperature to be 180-185 ℃;
and the quick cooling and shaping treatment comprises the step of carrying out quick cooling and shaping treatment on the fabric base subjected to ironing and shaping treatment for 10-15 s through a cooling roller with the temperature of 6-10 ℃.
Preferably, the impregnating compound comprises the following materials in parts by weight:
preferably, the method further comprises the step of configuring the desizing agent, wherein the desizing agent comprises the following materials in parts by weight:
preferably, the non-vegetable-sand-surface knife coating sizing material comprises the following materials in parts by weight:
the sand-planting surface scrape coating sizing material comprises the following materials in parts by weight:
preferably, in step S3, the dip coating amount is 170-180 g/m2Clamping and drying the soaked product for 2-3 min in an oven, and controlling the drying temperature to be 90-160 ℃; in step S4, the non-sand-planted surface is coated with sizing material with a coating amount of 110-120 g/m2Scraping and then drying for 1-3 min at the drying temperature of 80-150 ℃; in step S5, the spreading amount of the sizing material on the sand-planted surface is 90-100 g/m2And scraping and then drying for 1-3 min at the drying temperature of 90-160 ℃.
Preferably, the heat conductivity coefficient of the electric and heat conductive material is 160-165W/m.K; the solid content of the aqueous polyurethane emulsion is 48-50%, the glass transition temperature is 80-85 ℃, the pH value is 7-8, and the viscosity at 25 ℃ is 50-80 CP; the solid content of the liquid water-soluble phenolic resin is 70-75%, the water solubility is 1000-2000%, the pH value is 7-8, the viscosity at 25 ℃ is 200-400 CP, and the polymerization speed of 0.5g of the liquid water-soluble phenolic resin at 135 ℃ is 40-50S.
Preferably, the solid content of the vinyl chloride-vinyl acetate copolymer emulsion is 45-50%, the glass transition temperature is 70-75 ℃, the pH value is 7-8, and the viscosity at 25 ℃ is 30-60 CP; the solid content of the melamine resin is 49-51%, the pH value is 7-8, and the viscosity at 25 ℃ is 80-100 CP; the physical and chemical parameters of the butylbenzene emulsion are as follows: the solid content is 48-50%, the glass transition temperature is 80-90 ℃, the PH value is 7-8, and the viscosity at 25 ℃ is 60-80 CP.
Preferably, the viscosity of the impregnated rubber material at 20 ℃ is 100-200 CP; the viscosity of the non-sand-planted surface scraping and coating glue material at 20 ℃ is 4500-5500 CP; the viscosity of the sand-planting surface scraping sizing material at 25 ℃ is 380-450 CP.
A second object of the present invention is to provide a coated abrasive cloth substrate prepared by the above-described treatment process of a high-strength antistatic coated abrasive cloth substrate.
Preferably, the grey cloth for preparing the cloth base is blended cloth of 70-80 parts by weight of carbon fibers and 20-30 parts by weight of polyester fibers.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a treatment process of a high-strength antistatic coated abrasive cloth base, which adopts the steps of dipping treatment by adopting an antistatic dipping sizing material, blade coating by adopting an antistatic non-sand-planting surface and blade coating by adopting an antistatic blade coating sizing material, blade coating by adopting an antistatic sand-planting surface and blade coating by adopting an antistatic blade coating sizing material, so that a conductive channel is formed from the non-sand-planting surface to the sand-planting surface of the treated cloth base, and the antistatic property of the cloth base is improved. The mechanical strength of the cloth base is improved by processing the sizing material in the three procedures. In addition, in the cloth base shaping procedure, through the ironing shaping and the quick cooling shaping treatment which are carried out in sequence, the molecules of the cloth base are arranged in an oriented way in the shaping process, and the strength, the surface smoothness and the shaping quality of the cloth base are improved. In conclusion, the strength and the antistatic property of the treated cloth base are improved by adopting the process.
In a preferred scheme, the antistatic impregnated rubber material, the antistatic non-planted sand surface scraping rubber material and the antistatic planted sand surface scraping rubber material all comprise conductive and heat-conducting materials, so that a heat dissipation channel and a conductive channel are formed inside a cloth base during grinding of a grinding tool, heat and charges generated in the grinding process of a product are timely led out, dust is not adhered to a sand belt during grinding, and the durability of the sand belt is improved.
According to the coated abrasive tool cloth base provided by the invention, in a preferred scheme, the gray fabric for preparing the cloth base is blended cloth of 70-80 parts by weight of carbon fibers and 20-30 parts by weight of polyester fibers, so that the high temperature resistance, the conductivity, the chemical corrosion resistance and the mechanical property of the cloth base are improved, and the requirements of the cloth base on grinding under the conditions of high strength and strong static electricity and efficient and precise processing under the chemical corrosion condition are met.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented according to the content of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of the steps of the process for treating a high strength, anti-static coated abrasive cloth substrate of the present invention.
Detailed Description
The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, which will enable those skilled in the art to practice the present invention with reference to the accompanying specification. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
The invention provides a treatment process of a high-strength antistatic coated abrasive cloth base, as shown in figure 1, comprising the following steps:
s1, desizing, padding the gray fabric with a desizing agent, cleaning with clear water, ironing and drying;
specifically, desizing and washing the grey cloth by a washing machine to remove residual sizing agent on the grey cloth so as to prevent the existence of the sizing agent from influencing the permeability of the grey cloth and hindering the permeability of subsequent dipping sizing agent, non-sand-planting surface scrape coating sizing agent and antistatic sand-planting surface scrape coating sizing agent; the desizing agent is used for padding the grey cloth, and the grey cloth is dried after being cleaned by clear water so as to be used for the subsequent treatment process; further, before desizing treatment is carried out on the grey cloth, finishing and singeing treatment can be carried out on the grey cloth, wherein the finishing is to grind and shear the grey cloth to remove the surface defects of the grey cloth, and the singeing is to remove fluff on the surface of the grey cloth to enable the permeability of each part of the grey cloth to be similar or consistent;
s2, preparing an antistatic dipping glue stock, an antistatic non-sand-planting surface scraping glue stock and an antistatic sand-planting surface scraping glue stock respectively;
specifically, the dipping glue stock, the non-sand-planting surface scraping glue stock and the sand-planting surface scraping glue stock contain antistatic components, so that the antistatic performance is certain;
s3, soaking the desized cloth base with a soaking sizing material to enable the soaking sizing material to penetrate into the cloth base, covering part of the soaking sizing material on the surface of the cloth base, filling part of the soaking sizing material into gaps between warps and wefts of the cloth base, and forming a conductive channel inside the cloth base;
s4, adopting a non-sand-planting surface scraping sizing material to scrape the non-sand-planting surface of the cloth base, and forming a conductive channel on the non-sand-planting surface of the cloth base;
s5, adopting a sand planting surface scraping glue to scrape the sand planting surface of the cloth base, and forming a conductive channel on the sand planting surface of the cloth base;
s6, carrying out ironing and shaping treatment and quick cooling and shaping treatment on the cloth base processed in the steps;
wherein the ironing and shaping treatment comprises the steps of placing the non-blade-coated surface of the fabric base under a first ironing roller to iron for 10-30 s, and controlling the ironing temperature to be 180-185 ℃; then, placing the scraped surface of the cloth base under a second ironing roller for ironing for 10-30 s, and controlling the ironing temperature to be 180-185 ℃; furthermore, Teflon materials are sprayed on the surfaces of the first ironing roller and the second ironing roller, Teflon is polytetrafluoroethylene and is a non-stick coating, namely when the Teflon materials are used as a coating, the coating film is not stuck to most substances, is resistant to acid, alkali and various solvents, and can protect the ironing rollers;
and the quick cooling and shaping treatment comprises the step of carrying out quick cooling and shaping treatment on the fabric base subjected to ironing and shaping treatment for 10-15 s through a cooling roller with the temperature of 6-10 ℃. Through ironing and shaping and quick cooling and shaping treatment, molecules in fibers of the fabric base are directionally arranged when the fabric base is shaped, the strength of the fabric base is improved, the surface smoothness of the fabric base can be effectively improved, and the shaping quality of the fabric base is improved. According to the treatment process, through the use of the impregnated rubber material, the non-sand-planted surface scraping rubber material and the sand-planted surface scraping rubber material, the non-sand-planted surface, the inner part and the sand-planted surface of the cloth base contain conductive components to form a conductive path, so that the conductivity of the cloth base is improved, the electric charges of the cloth base are conducted to the ground through the metal shell of the contact equipment, the antistatic function is realized, and the antistatic effect is good.
Further, the impregnating compound comprises the following materials in parts by weight:
further, in the dipping sizing material, the physical and chemical parameters of the aqueous polyurethane emulsion are as follows: the solid content is 48-50%, the glass transition temperature is 80-85 ℃, the PH value is 7-8, and the viscosity at 25 ℃ is 50-80 CP. Further, the physical and chemical parameters of the liquid water-soluble phenolic resin are as follows: the solid content is 70-75%, the water solubility is 1000-2000%, the pH value is 7-8, the viscosity at 25 ℃ is 200-400 CP, and the polymerization speed of 0.5g of liquid water-soluble phenolic resin at 135 ℃ is 40-50S.
The water-based polyurethane emulsion and the liquid water-soluble phenolic resin can generate a synergistic effect, improve the bonding property and improve the mechanical property of the cloth base. The wollastonite can improve the heat resistance and the setting performance of the cloth base, and in addition, the wollastonite can play a bridging role between the liquid water-soluble phenolic resin and the cloth base fiber, so that the bonding between the liquid water-soluble phenolic resin and the cloth base fiber is enhanced, the strength of the cloth base is improved, and the conductive and heat-conducting material is fixed to prevent the conductive and heat-conducting material from being forced to move to damage a conductive channel. The organic fluorine modified styrene-acrylic emulsion improves the chemical resistance, the corrosion resistance and the durability of the cloth base.
Furthermore, the viscosity of the dipping glue stock at 20 ℃ is 100-200 CP, which is beneficial to dipping operation.
In one embodiment, the method further comprises the step of configuring the desizing agent, wherein the desizing agent comprises the following materials in parts by weight:
the propyl alcohol polyoxyethylene ether phosphate is a surfactant which can enable liquid to quickly permeate into fibers, and can effectively improve removal slurry of amylase and gluconic acid; glyceryl monostearate is a non-ionic wetting agent suitable for desizing various slurries. Potassium sulfite is an oxygen absorber and delays aging. The lauric acid monoglyceride is a nonionic surfactant, and is beneficial to uniform mixing and desizing treatment of the desizing agent. The desizing agent can accelerate the desizing treatment speed of the grey cloth and improve the removal rate of the grey cloth sizing agent.
In one embodiment, the non-vegetable-sand-based knife coating compound comprises the following materials in parts by weight:
further, in the non-sand-planted surface scrape coating sizing material, the physical and chemical parameters of the aqueous polyurethane emulsion are as follows: the solid content is 48-50%, the glass transition temperature is 80-85 ℃, the PH value is 7-8, and the viscosity at 25 ℃ is 50-80 CP. Further, the physical and chemical parameters of the liquid water-soluble phenolic resin are as follows: the solid content is 70-75%, the water solubility is 1000-2000%, the pH value is 7-8, the viscosity at 25 ℃ is 200-400 CP, and the polymerization speed of 0.5g of liquid water-soluble phenolic resin at 135 ℃ is 40-50S. The water-based polyurethane emulsion and the liquid water-soluble phenolic resin can generate a synergistic effect, improve the bonding property and improve the mechanical property of the non-sand-planting surface scraping coating sizing material of the cloth base. The light calcium carbonate is used as filling filler to improve the wear resistance of the non-sand-planted surface of the cloth base.
Further, the physical and chemical parameters of the vinyl chloride-vinyl acetate copolymer emulsion are as follows: the solid content is 45-50%, the glass transition temperature is 70-75 ℃, the pH value is 7-8, and the viscosity at 25 ℃ is 30-60 CP. The physical and chemical parameters of the melamine resin are as follows: the solid content is 49-51%, the pH value is 7-8, and the viscosity at 25 ℃ is 80-100 CP. In addition, the vitrification temperature of the vinyl chloride-vinyl acetate copolymer emulsion used for blade coating of the non-planted sand surface is 70-75 ℃, the melamine resin and the liquid water-soluble phenolic resin have good setting performance, when the three raw materials are dried and cured, three organic compounds are mutually crossed and cured to form three mutually-interpenetrated stable reticular structures so as to form a fabric protective layer on the back surface of the fabric base, and the hardness, heat resistance and wear resistance of the coated abrasive tool fabric base are effectively improved. In addition, the three-dimensional interpenetrating net-shaped structure formed by curing the vinyl chloride-vinyl acetate copolymer emulsion, the melamine resin and the liquid water-soluble phenolic resin is doped with the electric and heat conducting material, namely a three-dimensional electric and heat conducting structure is formed, so that the electric conductivity and the heat dissipation performance are enhanced.
Furthermore, the non-sand-planting surface scraping sizing material also comprises 10-20 parts by weight of inorganic filler, and is used for playing a bridging role between resin and cloth-based fibers in the non-sand-planting surface scraping sizing material, enhancing the bonding between the non-sand-planting surface scraping sizing material and the cloth-based fibers, improving the cloth-based strength, and fixing the conductive and heat-conductive material to prevent the conductive channel from being damaged due to forced movement. Further, the inorganic filler for bridging includes, but is not limited to, quartz glass, alumina powder, silica powder.
Furthermore, the viscosity of the non-sand-planted surface scraping sizing material at 20 ℃ is 4500-5500 CP, which is beneficial to scraping.
In one embodiment, the sand-coated doctor-blade sizing composition comprises the following materials in parts by weight:
further, in the step of scraping and coating a sizing material on a sand-planting surface, the solid content of the aqueous polyurethane emulsion is 48-50%, the glass transition temperature is 80-85 ℃, the pH value is 7-8, and the viscosity at 25 ℃ is 50-80 CP; the solid content of the liquid water-soluble phenolic resin is 70-75%, the water solubility is 1000-2000%, the pH value is 7-8, the viscosity at 25 ℃ is 200-400 CP, and the polymerization speed of 0.5g of the liquid water-soluble phenolic resin at 135 ℃ is 40-50S. The water-based polyurethane emulsion and the liquid water-soluble phenolic resin can generate a synergistic effect, improve the bonding property and improve the mechanical property of the sizing material scraped on the sand planting surface of the cloth base. The heat dissipation material in the sand-planted surface scrape coating glue improves the heat dissipation performance of the cloth-based sand-planted surface, and accelerates the heat generated by friction in the grinding process.
Further, in the coating sizing material of the sand-planted surface, the physical and chemical parameters of the styrene-butadiene emulsion are as follows: the solid content is 48-50%, the glass transition temperature is 80-90 ℃, the PH value is 7-8, and the viscosity at 25 ℃ is 60-80 CP. The styrene-butadiene emulsion used for the blade coating of the sand-planted surface ensures the hardness and the shaping quality of the cloth base by using the styrene-butadiene and the aqueous polyurethane emulsion with the glass transition temperature of 80-90 ℃.
Furthermore, the sand-planting surface scraping sizing material also comprises 10-20 parts by weight of inorganic filler, and is used for bridging between resin and cloth-based fibers in the sand-planting surface scraping sizing material, enhancing the bonding between the sand-planting surface scraping sizing material and the cloth-based fibers, improving the cloth-based strength, and fixing the conductive and heat-conductive material to prevent the conductive and heat-conductive material from being forced to move to damage a conductive channel. Further, the inorganic filler for bridging includes, but is not limited to, quartz glass, alumina powder, silica powder.
Furthermore, the viscosity of the sizing material coated on the sand-planted surface at 25 ℃ is 380-450 CP, which is beneficial to coating the sizing material.
In one embodiment, in step S3, the dip coating amount is 170-180 g/m2Clamping and drying the impregnated cloth base for 2-3 min by an oven, and controlling the drying temperature to be 90-160 ℃ so as to improve the amount and uniformity of the impregnated cloth base; in step S4, the non-sand-planted surface is coated with sizing material with a coating amount of 110～120g/m2Drying for 1-3 min after blade coating, wherein the drying temperature is 80-150 ℃, so that the cloth base non-sand-planted surface is uniformly coated with the blade coating glue material; in step S5, the spreading amount of the sizing material on the sand-planted surface is 90-100 g/m2And drying for 1-3 min after blade coating, wherein the drying temperature is 90-160 ℃, and the cloth-based sand-planting surface is uniformly coated with the rubber material by blade coating.
In one embodiment, the heat conductivity coefficient of the electric and heat conductive material contained in the impregnated rubber material, the non-sand-planted surface blade coating rubber material and the sand-planted surface blade coating rubber material is 160-165W/m.K, so that the cloth base subjected to impregnation treatment, non-sand-planted surface blade coating and sand-planted surface blade coating has good heat dissipation performance, heat generated in the grinding process is timely led out, and the durability of the abrasive belt is improved.
Further, the electric and heat conductive material contained in the impregnating sizing material, the non-sand-planting-surface scraping sizing material and the sand-planting-surface scraping sizing material is a filler with high heat conductivity coefficient and high electric conductivity, and includes but is not limited to metal powder or carbon. Furthermore, the metal powder is nano-scale metal powder and can be uniformly dispersed in corresponding sizing materials.
In one embodiment, 70-80 parts by weight of carbon fibers and 20-30 parts by weight of polyester fiber blended grey cloth are adopted for cloth base treatment, the breaking strength of the prepared cloth base is improved by more than 30% compared with that of a common polyester cloth base, the elongation is reduced by 20-30%, namely, the modulus, the high temperature resistance, the conductivity, the chemical corrosion resistance and the mechanical property of the cloth base are improved by optimizing the structure of the grey cloth.
The cloth base obtained by the treatment process has the advantages of improved strength, reduced elongation and smooth surface, and is suitable for production of high-efficiency and high-precision grinding coated abrasive tools. The abrasive belt has the advantages of good heat conduction and electric conduction performance, excellent antistatic performance and quick heat dissipation, heat and electric charges generated by the cloth base in the grinding process can be timely led out, dust is not easy to adhere to the abrasive belt in grinding, and the durability of the abrasive belt is improved. The surface smoothness of the cloth base can be effectively improved through ironing and shaping and quick cooling and shaping treatment, and the shaping quality of the cloth base is improved.
The invention also provides a coated abrasive cloth base which is prepared by adopting the treatment process of the high-strength antistatic coated abrasive cloth base.
Furthermore, the gray fabric for preparing the fabric base is blended fabric of 70-80 parts by weight of carbon fibers and 20-30 parts by weight of polyester fibers, so that the modulus, the high temperature resistance, the conductivity, the chemical corrosion resistance and the mechanical property of the fabric base are improved, and the requirements of the fabric base on grinding under the conditions of high strength and strong static electricity and efficient precision processing under the chemical corrosion condition are met.
Compared with the common polyester fabric base, the breaking strength of the fabric base prepared by blending the carbon fibers and the polyester fibers is improved by more than 30%, the elongation is reduced by 20-30%, and the surface of the fabric base is smooth. The obtained cloth base has high antistatic performance and the surface resistance value is less than 10 by adopting the grey cloth blended by the carbon fiber and the polyester fiber and applying the treatment process5Omega, the heat dissipation is fast, and the rupture strength of cloth base can be further improved to the use of three processes of flooding, non-sand planting face knife coating, sand planting face knife coating sizing material, is applicable to the production of high-strength high-efficient antistatic coated abrasive article cloth base product. The breaking strength of the traditional polyester fiber cloth base reaches 5000N/5cm at most, while the cloth base is made of carbon fiber and polyester fiber blended grey cloth, the breaking strength can reach 6000N/5cm, and the strength is high.
In order to illustrate the invention herein, specific examples are set forth below. It should be understood that these examples are for illustrative purposes only and are not to be construed as limiting the invention in any way.
Example 1
A treatment process of a high-strength antistatic coated abrasive cloth base comprises the following steps:
(1) the grey cloth blended by carbon fiber and polyester fiber is adopted for preparing the cloth base, the grey cloth comprises 70 parts by weight of polyester and 30 parts by weight of carbon fiber, the yarn count is 12 multiplied by 10 (namely 12 yarn counts in the radial direction and 10 yarn counts in the weft direction), the density is 102 multiplied by 42 (namely 102 yarn counts in the radial direction and 42 yarn counts in the weft direction), and the single weight is 330g/m2；
(2) Preparing a desizing agent;
(3) adopting a desizing agent to carry out padding, desizing treatment of cleaning with clear water at 50 ℃ and ironing and drying treatment at 130 ℃;
(4) respectively preparing an antistatic dipping sizing material, an antistatic non-sand-planting surface scraping sizing material and an antistatic sand-planting surface scraping sizing material;
(5) dipping the desized cloth base by using dipping sizing material, and controlling the dipping coating amount to be 170g/m2Holding and drying for 2min in an oven after dipping, and controlling the drying temperature to be 160 ℃;
(6) adopting non-sand-planting antistatic scraping sizing material to scrape the non-sand-planting surface of the cloth base, and controlling the scraping amount to be 110g/m2Scraping and drying for 1min, and controlling the drying temperature to be 150 ℃;
(7) adopting the sand-planting surface of the sand-planting surface antistatic knife coating sizing material cloth base to carry out knife coating, and controlling the knife coating amount to be 90g/m2Scraping and drying for 1min, and controlling the drying temperature to be 160 ℃;
(8) carrying out ironing and shaping treatment and quick cooling and shaping treatment on the treated cloth base: placing the non-knife-coated cloth surface under a first ironing roller with the surface sprayed with Teflon material, ironing for 10s, and controlling the ironing temperature to be 180 ℃; and then, scraping the coated surface of the cloth base, putting the coated surface of the cloth base under a second ironing roller with the surface sprayed with the Teflon material, ironing for 10s, controlling the ironing temperature to be 180 ℃, and then carrying out quick cooling setting treatment on the cloth base for 10s through a cooling roller with the temperature of 6 ℃. The diameters of the first ironing roller and the second ironing roller are both 3 meters.
Further, the desizing agent comprises 2 parts by weight of isopropanol polyoxyethylene ether phosphate, 3 parts by weight of gluconic acid, 20 parts by weight of amylase, 3 parts by weight of glycerol monostearate, 0.5 part by weight of potassium sulfite, 1 part by weight of glycerol monolaurate and 63 parts by weight of deionized water; slowly adding the prepared desizing agent into a desizing water tank, soaking the cloth base in the desizing agent, then carrying out soaking and desizing by three soaking and binding rollers with the pressure of 5bar, and then adopting clear water at 50 ℃ for cleaning and 12 ironing and drying by 130 ℃ rollers.
Further, the dipping glue stock comprises 82 parts by weight of aqueous polyurethane emulsion, 15 parts by weight of organic fluorine modified styrene-acrylic emulsion, 20 parts by weight of liquid water-soluble phenolic resin, 30 parts by weight of wollastonite, 8 parts by weight of conductive and heat-conductive material and 15 parts by weight of water; the viscosity of the impregnated size at 20 ℃ is 100 CP. Further, the physical and chemical parameters of the aqueous polyurethane emulsion are as follows: the solids content was 48%, the glass transition temperature was 80 ℃, the pH 7 and the viscosity at 25 ℃ was 50 CP. The physical and chemical parameters of the liquid water-soluble phenolic resin are as follows: the solid content was 70%, the water solubility was 1000%, the pH was 7, the viscosity at 25 ℃ was 200CP, and the polymerization rate of 0.5g of liquid water-soluble phenol resin at 135 ℃ was 40S.
Further, the non-sand-planting surface blade coating sizing material comprises 65 parts by weight of vinyl chloride-vinyl acetate copolymer emulsion, 15 parts by weight of melamine resin, 35 parts by weight of liquid water-soluble phenolic resin, 40 parts by weight of light calcium carbonate, 8 parts by weight of electric and heat conducting material and 15 parts by weight of aqueous polyurethane emulsion; the non-sand-planted surface scrape coating glue stock has the viscosity of 4500CP at the temperature of 20 ℃. Further, the physical and chemical parameters of the vinyl chloride-vinyl acetate copolymer emulsion are as follows: the solids content was 45%, the glass transition temperature was 70 ℃, the pH 7 and the viscosity at 25 ℃ was 30 CP. The physical and chemical parameters of the melamine resin are as follows: the solids content was 49%, the pH was 7 and the viscosity at 25 ℃ was 100 CP.
Further, the sand-planting surface blade coating sizing material comprises 100 parts by weight of styrene-butadiene emulsion, 30 parts by weight of liquid water-soluble phenolic resin, 15 parts by weight of aqueous polyurethane emulsion, 8 parts by weight of heat dissipation material and 8 parts by weight of conductive and heat conductive material; the viscosity of the sand-planting surface scraping sizing material at 25 ℃ is 380 CP. Further, the physical and chemical parameters of the butylbenzene emulsion are as follows: the solids content is 50%, the glass transition temperature is 80 ℃, the pH is 7 and the viscosity at 25 ℃ is 80 CP. The heat conductivity coefficient of the electric and heat conductive material is 160W/m.K. The heat dissipation material changes phase state at 195 ℃, and the heat dissipation material and the conductive heat conduction material effectively dissipate grinding heat and static charge, thereby ensuring the grinding efficiency and the service life of the grinding tool.
Example 2
A treatment process of a high-strength antistatic coated abrasive cloth base comprises the following steps:
(1) the carbon fiber and polyester fiber blended grey cloth is used for preparing a cloth base, and the grey cloth contains 80 parts by weight of polyester and 20 parts by weight of polyesterThe weight portion of carbon fiber has yarn count of 12 multiplied by 10, density of 102 multiplied by 42 and single weight of 330g/m2；
(2) Preparing a desizing agent;
(3) adopting a desizing agent to carry out padding, desizing treatment of cleaning with clear water at 50 ℃ and ironing and drying treatment at 130 ℃;
(4) respectively preparing an antistatic dipping sizing material, an antistatic non-sand-planting surface scraping sizing material and an antistatic sand-planting surface scraping sizing material;
(5) dipping the desized cloth base by using a dipping sizing material, and controlling the dipping coating amount to be 180g/m2After impregnation, clamping and drying for 3min in an oven, and controlling the drying temperature to be 90 ℃;
(6) adopting non-sand-planting antistatic scraping sizing material to scrape the non-sand-planting surface of the cloth base, and controlling the scraping amount to be 120g/m2Scraping and drying for 3min, and controlling the drying temperature to be 80 ℃;
(7) adopting the sand-planting surface of the sand-planting surface antistatic knife coating sizing material cloth base to carry out knife coating, and controlling the knife coating amount to be 100g/m2Scraping and drying for 3min, and controlling the drying temperature to be 90 ℃;
(8) carrying out ironing and shaping treatment and quick cooling and shaping treatment on the treated cloth base: placing the non-knife-coated cloth surface under a first ironing roller with a Teflon material sprayed on the surface, ironing for 30s, and controlling the ironing temperature to be 170 ℃; and then, scraping the coated surface of the cloth base, putting the coated surface of the cloth base under a second ironing roller with the surface sprayed with the Teflon material, ironing for 30s, controlling the ironing temperature to be 170 ℃, and then carrying out 15s quick cooling and shaping treatment on the cloth base by a cooling roller with the temperature of 10 ℃. The diameters of the first ironing roller and the second ironing roller are both 3 meters.
Further, the desizing agent comprises 2 parts by weight of isopropanol polyoxyethylene ether phosphate, 2 parts by weight of gluconic acid, 25 parts by weight of amylase, 4 parts by weight of glycerol monostearate, 0.8 part by weight of potassium sulfite, 2 parts by weight of glycerol monolaurate and 71 parts by weight of deionized water; slowly adding the prepared desizing agent into a desizing water tank, soaking the cloth base in the desizing agent, then carrying out soaking and desizing by three soaking and binding rollers with the pressure of 5bar, and then adopting clear water at 50 ℃ for cleaning and 12 ironing and drying by 130 ℃ rollers.
Further, the dipping glue stock comprises 80 parts by weight of aqueous polyurethane emulsion, 10 parts by weight of organic fluorine modified styrene-acrylic emulsion, 15 parts by weight of liquid water-soluble phenolic resin, 25 parts by weight of wollastonite, 5 parts by weight of conductive and heat-conductive material and 10 parts by weight of water; the viscosity of the impregnated size at 20 ℃ is 200 CP. Further, the physical and chemical parameters of the aqueous polyurethane emulsion are as follows: the solids content is 50%, the glass transition temperature is 80 ℃, the pH is 7 and the viscosity at 25 ℃ is 50 CP. The physical and chemical parameters of the liquid water-soluble phenolic resin are as follows: the solid content was 75%, the water solubility was 1500%, the pH was 7, the viscosity at 25 ℃ was 300CP, and the polymerization rate of 0.5g of liquid water-soluble phenol resin at 135 ℃ was 42S.
Further, the non-sand-planting surface blade coating sizing material comprises 60 parts by weight of vinyl chloride-vinyl acetate copolymer emulsion, 10 parts by weight of melamine resin, 30 parts by weight of liquid water-soluble phenolic resin, 35 parts by weight of light calcium carbonate, 5 parts by weight of electric and heat conducting material and 12 parts by weight of aqueous polyurethane emulsion; the non-vegetable-sand-surface knife coating sizing material has the viscosity of 4800CP at the temperature of 20 ℃. Further, the physical and chemical parameters of the vinyl chloride-vinyl acetate copolymer emulsion are as follows: the solids content was 50%, the glass transition temperature was 75 ℃, the pH was 7 and the viscosity at 25 ℃ was 60 CP. The physical and chemical parameters of the melamine resin are as follows: the solids content was 51%, the pH 7 and the viscosity at 25 ℃ was 100 CP.
Further, the sand-planting surface blade coating sizing material comprises 90 parts by weight of styrene-butadiene emulsion, 20 parts by weight of liquid water-soluble phenolic resin, 10 parts by weight of aqueous polyurethane emulsion, 5 parts by weight of heat dissipation material and 5 parts by weight of conductive and heat conductive material; the viscosity of the sand-planted surface scrape coating sizing material at 25 ℃ is 400 CP. Further, the physical and chemical parameters of the butylbenzene emulsion are as follows: the solids content was 48%, the glass transition temperature was 90 ℃, the pH 7 and the viscosity at 25 ℃ was 70 CP. The thermal conductivity of the electric and heat conductive material is 163W/m.K. The heat dissipation material undergoes a phase change at 198 ℃. The heat dissipation material and the conductive heat conduction material effectively dissipate grinding heat and static charge, and the grinding efficiency and the service life of the grinding tool are ensured.
Example 3
(1) The grey cloth blended by carbon fiber and polyester fiber is used for preparing a cloth base, and the grey cloth contains 75 parts by weight of polyester and 25 parts by weight of carbon fiber, the yarn count is 12 multiplied by 10, the density is 102 multiplied by 42, and the single weight is 330g/m2；
(2) Preparing a desizing agent;
(3) adopting a desizing agent to carry out padding, desizing treatment of cleaning with clear water at 50 ℃ and ironing and drying treatment at 130 ℃;
(4) respectively preparing an antistatic dipping sizing material, an antistatic non-sand-planting surface scraping sizing material and an antistatic sand-planting surface scraping sizing material;
(5) adopting antistatic dipping sizing material, controlling the dipping coating amount to be 175g/m2Holding and drying for 2.5min in an oven after dipping, and controlling the drying temperature to be 120 ℃;
(6) adopting non-sand-planting antistatic scraping sizing material to scrape the non-sand-planting surface of the cloth base, and controlling the scraping amount to be 115g/m2Scraping and drying for 2min, and controlling the drying temperature to be 130 ℃;
(7) adopting the sand-planting surface of the sand-planting surface antistatic knife coating sizing material cloth base to carry out knife coating, and controlling the knife coating amount to be 95g/m2Scraping and drying for 2min, and controlling the drying temperature to be 130 ℃;
(8) carrying out ironing and shaping treatment and quick cooling and shaping treatment on the treated cloth base: placing the non-knife-coated cloth surface under a first ironing roller with Teflon material sprayed on the surface, ironing for 20s, and controlling the ironing temperature to be 175 ℃; and then, the coated surface of the cloth base is arranged under a second ironing roller with the surface sprayed with the Teflon material to be ironed for 20s, the ironing temperature is controlled to be 175 ℃, and then the cloth base is subjected to 13s quick cooling setting treatment through a cooling roller with the temperature of 8 ℃. The diameters of the first ironing roller and the second ironing roller are both 3 meters.
Further, the desizing agent comprises 2.5 parts by weight of isopropanol polyoxyethylene ether phosphate, 2.5 parts by weight of gluconic acid, 22 parts by weight of amylase, 4 parts by weight of glyceryl monostearate, 0.7 part by weight of potassium sulfite, 1.8 parts by weight of lauric acid monoglyceride and 65 parts by weight of deionized water; slowly adding the prepared desizing agent into a desizing water tank, soaking the cloth base in the desizing agent, then carrying out soaking and desizing by three soaking and binding rollers with the pressure of 5bar, and then adopting clear water at 50 ℃ for cleaning and 12 ironing and drying by 130 ℃ rollers.
Further, the dipping glue comprises 81 parts by weight of aqueous polyurethane emulsion; 13 parts of organic fluorine modified styrene-acrylic emulsion; 18 parts of liquid water-soluble phenolic resin; 28 parts of wollastonite; 7 parts of electric and heat conducting material; 12 parts of water; the viscosity of the impregnated size at 20 ℃ was 150 CP. Further, the physical and chemical parameters of the aqueous polyurethane emulsion are as follows: the solids content was 49%, the glass transition temperature was 80 ℃, the pH was 7 and the viscosity at 25 ℃ was 50 CP. The physical and chemical parameters of the liquid water-soluble phenolic resin are as follows: the solids content was 72%, the water solubility was 2000%, the pH was 7, the viscosity at 25 ℃ was 350CP, and the polymerization rate of 0.5g of the phenolic resin was 44S at 135 ℃.
Further, the non-sand-planting surface blade coating sizing material comprises 63 parts by weight of vinyl chloride-vinyl acetate copolymer emulsion, 13 parts by weight of melamine resin, 35 parts by weight of liquid water-soluble phenolic resin, 38 parts by weight of light calcium carbonate, 7 parts by weight of electric and heat conduction material and 14 parts by weight of aqueous polyurethane emulsion; the non-vegetable-sand-surface knife coating glue stock has the viscosity of 5000CP at the temperature of 20 ℃. Further, the physical and chemical parameters of the vinyl chloride-vinyl acetate copolymer emulsion are as follows: the solids content was 49%, the glass transition temperature was 72 ℃, the pH was 7 and the viscosity at 25 ℃ was 50 CP. The physical and chemical parameters of the melamine resin are as follows: the solids content was 50%, the pH 7 and the viscosity at 25 ℃ 90 CP.
Further, the sand-planting surface blade coating sizing material comprises 95 parts by weight of styrene-butadiene emulsion, 28 parts by weight of liquid water-soluble phenolic resin, 13 parts by weight of aqueous polyurethane emulsion, 6 parts by weight of heat dissipation material and 7 parts by weight of conductive and heat conductive material; the viscosity of the sand-planted surface scraping sizing material at 25 ℃ is 420 CP. Further, the physical and chemical parameters of the butylbenzene emulsion are as follows: the solids content was 49%, the glass transition temperature was 85 ℃, the pH was 7 and the viscosity at 25 ℃ was 70 CP. The heat conductivity coefficient of the electric and heat conductive material is 165W/m.K. The heat dissipation material has a phase change at 200 ℃. The heat dissipation material and the conductive heat conduction material effectively dissipate grinding heat and static charge, and the grinding efficiency and the service life of the grinding tool are ensured.
The fabric base obtained by the treatment of the embodiments 1, 2 and 3 has improved conductivity because the grey fabric is formed by blending the carbon fiber and the terylene; in addition, in the process of treating the cloth base, the cloth base is soaked by adopting an antistatic dipping glue stock, coated by adopting an antistatic non-sand-planting surface scraping glue stock and coated by adopting an antistatic sand-planting surface scraping glue stock, so that the cloth base forms a conductive channel from the non-sand-planting surface to the sand-planting surface (from inside to outside), and the conductivity is further improved, therefore, the surface resistance value of the cloth base is less than 105Omega. Because grey cloth is carbon fiber and dacron blending, the base cloth breaking strength improves more than 30% than ordinary dacron base cloth, the elongation reduces 20 ~ 30%, the mechanical properties of base cloth has been improved, and antistatic flooding sizing material flooding, antistatic non-planting sand face knife coating sizing material knife coating, antistatic planting sand face knife coating sizing material knife coating is handled, increase the mechanical strength of base cloth when improving base cloth antistatic property, the base cloth surface is level and smooth, intensity is higher, electric conductivity is more excellent, be applicable to the production of the high-strength high-efficient grinding apparatus of scribbling attaches the base cloth product.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; those skilled in the art can readily practice the invention as shown and described in the drawings and detailed description herein; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. A treatment process of a high-strength antistatic coated abrasive cloth base is characterized by comprising the following steps:
s1, desizing, padding the gray fabric with a desizing agent, cleaning with clear water, ironing and drying;
s2, preparing an antistatic dipping glue stock, an antistatic non-sand-planting surface scraping glue stock and an antistatic sand-planting surface scraping glue stock respectively;
s3, soaking the desized cloth base by using a soaking sizing material;
s4, adopting a non-sand-planting surface scraping glue to scrape the non-sand-planting surface of the cloth base;
s5, adopting a sand-planting surface scraping glue to scrape the sand-planting surface of the cloth base;
s6, carrying out ironing and shaping treatment and quick cooling and shaping treatment on the cloth base processed in the steps;
wherein the ironing and shaping treatment comprises the steps of placing the non-blade-coated surface of the fabric base under a first ironing roller to iron for 10-30 s, and controlling the ironing temperature to be 180-185 ℃; then, placing the scraped surface of the cloth base under a second ironing roller for ironing for 10-30 s, and controlling the ironing temperature to be 180-185 ℃;
and the quick cooling and shaping treatment comprises the step of carrying out quick cooling and shaping treatment on the fabric base subjected to ironing and shaping treatment for 10-15 s through a cooling roller with the temperature of 6-10 ℃.
2. The process of claim 1, wherein the impregnated size comprises the following materials in parts by weight:
3. the process of claim 1, further comprising the step of providing the desizing agent, wherein the desizing agent comprises the following materials in parts by weight:
4. the process of claim 1, wherein the non-vegetable-sand-coated sizing material comprises the following materials in parts by weight:
the sand-planting surface scrape coating sizing material comprises the following materials in parts by weight:
5. the process of claim 1, wherein the dip coating amount in step S3 is 170-180 g/m2Clamping and drying the soaked product for 2-3 min in an oven, and controlling the drying temperature to be 90-160 ℃; in step S4, the non-sand-planted surface is coated with sizing material with a coating amount of 110-120 g/m2Scraping and then drying for 1-3 min at the drying temperature of 80-150 ℃; in step S5, the spreading amount of the sizing material on the sand-planted surface is 90-100 g/m2And scraping and then drying for 1-3 min at the drying temperature of 90-160 ℃.
6. The treatment process of the high-strength antistatic coated abrasive cloth base according to claim 2 or 4, wherein the heat conductivity coefficient of the electric and heat conductive material is 160-165W/m.K; the solid content of the aqueous polyurethane emulsion is 48-50%, the glass transition temperature is 80-85 ℃, the pH value is 7-8, and the viscosity at 25 ℃ is 50-80 CP; the solid content of the liquid water-soluble phenolic resin is 70-75%, the water solubility is 1000-2000%, the pH value is 7-8, the viscosity at 25 ℃ is 200-400 CP, and the polymerization speed of 0.5g of the liquid water-soluble phenolic resin at 135 ℃ is 40-50S.
7. The treatment process of the high-strength antistatic coated abrasive cloth base according to claim 4, wherein the chloroethylene-vinyl acetate copolymer emulsion has a solid content of 45-50%, a glass transition temperature of 70-75 ℃, a pH value of 7-8 and a viscosity of 30-60 CP at 25 ℃; the solid content of the melamine resin is 49-51%, the pH value is 7-8, and the viscosity at 25 ℃ is 80-100 CP; the physical and chemical parameters of the butylbenzene emulsion are as follows: the solid content is 48-50%, the glass transition temperature is 80-90 ℃, the PH value is 7-8, and the viscosity at 25 ℃ is 60-80 CP.
8. The process for treating a high-strength antistatic coated abrasive cloth substrate according to any one of claims 1 to 5, wherein the viscosity of the impregnated rubber material at 20 ℃ is 100 to 200 CP; the viscosity of the non-sand-planted surface scraping and coating glue material at 20 ℃ is 4500-5500 CP; the viscosity of the sand-planting surface scraping sizing material at 25 ℃ is 380-450 CP.
9. A coated abrasive cloth substrate prepared by the process of treating a high strength, anti-static coated abrasive cloth substrate according to any one of claims 1 to 8.
10. The coated abrasive cloth base according to claim 9, wherein the raw cloth for preparing the cloth base is a blended cloth of 70 to 80 parts by weight of carbon fibers and 20 to 30 parts by weight of polyester fibers.
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| US20030205320A1 (en) * | 2000-10-13 | 2003-11-06 | 3M Innovative Properties Company | Coated abrasive having laminate backing material and method of making the same |
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