CN111360709B - Non-woven fabric polishing wheel containing composite phase change microcapsules and preparation method thereof - Google Patents
Non-woven fabric polishing wheel containing composite phase change microcapsules and preparation method thereof Download PDFInfo
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- CN111360709B CN111360709B CN202010241844.0A CN202010241844A CN111360709B CN 111360709 B CN111360709 B CN 111360709B CN 202010241844 A CN202010241844 A CN 202010241844A CN 111360709 B CN111360709 B CN 111360709B
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- woven fabric
- polishing wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/001—Manufacture of flexible abrasive materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/02—Backings, e.g. foils, webs, mesh fabrics
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
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- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention provides a non-woven fabric polishing wheel containing composite phase-change microcapsules and a preparation method thereof, belonging to the technical field of polishing wheel production, and comprising non-woven fabric, abrasive, resin, a curing agent, a lubricant and a heat absorbent, wherein the heat absorbent is the composite phase-change microcapsules and comprises a core and a shell coated on the surface of the core, and the core is an organic phase-change material; and by S1: uniformly mixing the composite phase-change microcapsule with other materials, roll-coating the composite phase-change microcapsule on non-woven fabric fiber cotton, fixing the non-woven fabric fiber cotton in a grinding tool, and curing and molding the non-woven fabric fiber cotton in an oven; s2: and (4) taking out of the die, airing, punching in a punch press, and carrying out post-curing reaction to obtain a finished product. The organic phase change material is subjected to microencapsulation treatment, so that the condition that the adhesive force and the mechanical strength of the original non-woven fabric polishing wheel are damaged by directly adding the organic phase change material is avoided, the preparation method is not required to be simplified and quick, and the adhesive capacity and the wear resistance of the polishing wheel and the brightness of a polished workpiece can be improved.
Description
Technical Field
The invention relates to the technical field of polishing wheel production, in particular to a non-woven fabric polishing wheel containing composite phase change microcapsules and a preparation method thereof.
Background
The non-woven fabrics generate a large amount of heat during grinding and polishing, and although the non-woven fabrics rotate at high speed to play a certain role in cooling, the non-woven fabrics cannot completely meet the requirement of high-quality workpiece grinding. Because the workpiece is easily burnt at high temperature, and the interior of the non-woven fabric polishing wheel can be softened by heat accumulation and even burnt out, the phase-change material is added into the non-woven fabric polishing wheel, which is an effective solution.
The phase change material mainly comprises an inorganic phase change material and an organic phase change material. The inorganic phase change material has low use latent heat at low temperature, low release temperature, moisture absorption and no lubrication effect, so the inorganic phase change material is less in use. The organic phase-change material has high latent heat of phase change and has a lubricating effect, so that the organic phase-change material is commonly used in a non-woven fabric polishing wheel.
At present, organic phase-change materials are directly added into a non-woven fabric polishing wheel in an adding mode to prepare the non-woven fabric polishing wheel. However, the addition method has a limited amount of the organic phase change material, and can play a certain role in lubrication and heat absorption, but cannot meet the requirement of high-quality polishing; in addition, the processing procedure of the organic phase-change material can destroy the mechanical strength and hardness of the non-woven fabric polishing wheel of the original system and the adhesive force of the mortar to a certain extent, so that the non-woven fabric polishing wheel has a series of problems of reduced grinding force, softening, sand falling, fluffing and the like.
Disclosure of Invention
Aiming at the defects and shortcomings in the background technology, the invention provides the non-woven fabric polishing wheel containing the composite phase change microcapsules, and the non-woven fabric polishing wheel has more reasonable components and structure, so that the phenomenon that the mechanical strength, hardness and adhesive force of mortar are damaged due to the fact that an organic phase change material is directly added into a non-woven fabric glue curing system is avoided, the original non-woven fabric polishing wheel is protected to keep good grinding force, and the structure is stable and durable.
Meanwhile, the invention also aims to provide a preparation method of the non-woven fabric polishing wheel containing the composite phase change microcapsules, which can overcome the defects that the organic phase change material damages the adhesive force and the mechanical strength of the original non-woven fabric polishing wheel, so that the addition amount of the organic phase change material can be adjusted randomly according to the demand of the non-woven fabric polishing wheel, and the polishing and grinding requirements of high-quality workpieces are met.
In order to realize the purpose, the invention adopts the following technical scheme to realize the purpose:
a non-woven fabric polishing wheel containing composite phase-change microcapsules comprises non-woven fabrics, abrasive materials, resin, a curing agent, a lubricant and a heat absorbent, wherein the heat absorbent is the composite phase-change microcapsules and comprises a core and a shell coated on the surface of the core, and the core is made of an organic phase-change material.
The organic phase-change material is prepared by compounding one or more organic phase-change materials selected from stearic acid and salts thereof, paraffin, edible wax, fully refined paraffin, semi-refined paraffin, crude paraffin, soap wax, high molecular wax, palm wax and Fischer-Tropsch wax.
The shell of the composite phase-change microcapsule is formed by compounding resin, including one or more of urea-formaldehyde resin, phenolic resin, polyurethane, melamine ester and acrylic resin.
The resin raw materials for preparing the shell comprise urea, formaldehyde, acrylic acid, methyl methacrylate, styrene, melamine, an emulsifier, an initiator, an alkaline inhibitor and an acidic initiator.
The emulsifier comprises one or a mixture of more of Styrene Maleic Anhydride (SMA), dioctyl sodium sulfosuccinate, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, octyl phenol polyoxyethylene ether 0P10, nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and isomeric alcohol ether.
The initiator comprises one or a mixture of more of dibenzoyl peroxide, ammonium peroxodisulfate, di-tert-butyl hydroperoxide, azobisisobutyronitrile, cumene hydroperoxide, dimethyl azobisisobutyrate and tert-amyl peroxy-2-ethylhexanoate.
The alkaline inhibitor comprises organic alkali and inorganic alkali, including one or more of sodium carbonate, sodium bicarbonate, sodium hydroxide, sodium ethoxide, triethanolamine, diethanolamine and monoethanolamine.
The acidic initiator comprises a mixture of one or more of formic acid, acetic acid, sulfamic acid, glycolic acid, hydrochloric acid, phosphoric acid, nitric acid and sulfuric acid.
A preparation method of a non-woven fabric polishing wheel containing composite phase change microcapsules comprises the following steps:
s1 sizing: uniformly mixing the composite phase-change microcapsule, resin, a curing agent, a lubricant, an abrasive and toner, uniformly coating the mixture on non-woven fabric cellucotton in a rolling mode, laminating the non-woven fabric cellucotton in a fixed grinding tool according to the required thickness, and placing the non-woven fabric cellucotton in an oven for curing reaction and forming;
s2 solidification after punch forming: and (4) releasing the non-woven fabric fiber cotton block subjected to the step S1 from a fixed die, airing to a certain hardness, punching out the required size specification in a punch press, and finally entering an oven for post-curing reaction to obtain a finished product.
Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) according to the method, microencapsulation treatment is carried out on the organic phase-change material, and the surface microstructure of the phase-change material is changed, so that the microcosmic distribution state of the phase-change material on the non-woven fabric polishing wheel is changed, the direct addition of the organic phase-change material is avoided, the adhesive force and the mechanical strength of the original non-woven fabric polishing wheel are damaged, and a series of problems of grinding force reduction, softening, sand falling, fluffing and the like of the original non-woven fabric polishing wheel are easily caused.
(2) The composite phase-change microcapsule adopted by the invention can play roles of large phase-change latent heat and lubrication, and can not damage the performance of the original non-woven fabric polishing wheel, so that the addition amount of the organic phase-change material can be randomly adjusted according to the requirements of the non-woven fabric polishing wheel, and the effect of meeting polishing and grinding requirements of high-quality workpieces is achieved.
(3) The preparation method of the non-woven fabric polishing wheel is simple and rapid, the preparation method can keep the characteristics of the composite phase change microcapsules, and can avoid destroying the system structure and mechanical strength of the original non-woven fabric polishing wheel, so that the addition amount of the phase change material can be randomly adjusted, and the bonding capability, the wear resistance and the glossiness of a polished workpiece are improved.
Drawings
FIG. 1 is a diagram: the surface structure chart of the non-woven fabric polishing wheel is shown;
FIG. 2 is a diagram of: the structure of the composite phase-change microcapsule of the invention;
in the figure, 1, non-woven fabric; 2. an abrasive; 3. a resin; 4. a heat absorber; 5. a kernel; 6. a housing.
Detailed Description
In order to clearly understand the technical solutions adopted by the present invention, the following description is made on the preferred embodiments of the present invention, and it should be understood that the embodiments described herein are only used for illustrating and explaining the present invention, and are not used to limit the present invention.
Referring to fig. 1-2, example 1: a non-woven fabric polishing wheel containing composite phase change microcapsules comprises non-woven fabrics 1, an abrasive 2, resin 3, a curing agent, a lubricant and a heat absorbent 4, wherein the heat absorbent is the composite phase change microcapsules and comprises cores 5 and shells 6 coated on the surfaces of the cores, and the cores are made of organic phase change materials.
The organic phase change material is stearic acid or lithium stearate.
The shell of the composite phase-change microcapsule is urea-formaldehyde resin; the resin raw materials for preparing the shell are urea, formaldehyde, an emulsifier, an initiator, an alkaline inhibitor and an acidic initiator.
The emulsifier is styrene maleic anhydride and fatty alcohol polyoxyethylene ether; the initiator is dibenzoyl peroxide; the alkaline inhibitor is sodium bicarbonate; the acidic initiator is formic acid.
Referring to FIGS. 1-2, example 2: a non-woven fabric polishing wheel containing composite phase change microcapsules comprises non-woven fabrics 1, an abrasive 2, resin 3, a curing agent, a lubricant and a heat absorbent 4, wherein the heat absorbent is the composite phase change microcapsules and comprises cores 5 and shells 6 coated on the surfaces of the cores, and the cores are made of organic phase change materials.
The organic phase change material is stearic acid or palmitic acid.
The shell of the composite phase-change microcapsule is urea-formaldehyde resin and melamine ester; the resin raw materials for preparing the shell are urea, melamine, formaldehyde, an emulsifier, an initiator, an alkaline inhibitor and an acidic initiator.
The emulsifier is dioctyl sodium sulfosuccinate and styrene maleic anhydride; the initiator is ammonium persulfate; the alkaline inhibitor is triethanolamine; the acid initiator is sulfamic acid or formic acid.
Referring to FIGS. 1-2, example 3: a non-woven fabric polishing wheel containing composite phase change microcapsules comprises non-woven fabrics 1, an abrasive 2, resin 3, a curing agent, a lubricant and a heat absorbent 4, wherein the heat absorbent is the composite phase change microcapsules and comprises cores 5 and shells 6 coated on the surfaces of the cores, and the cores are made of organic phase change materials.
The organic phase-change material is paraffin, palmitic acid and lithium stearate.
The shell of the composite phase-change microcapsule is a mixture of urea-formaldehyde resin and acrylic resin; the resin raw materials for preparing the shell are urea, formaldehyde, acrylic acid, methyl methacrylate, styrene, an emulsifier, an initiator, an alkaline inhibitor and an acidic initiator.
The emulsifier is styrene maleic anhydride and isomeric alcohol ether; the initiator is azodiisobutyronitrile and dibenzoyl oxide; the alkaline inhibitor is triethanolamine; the acidic initiator is hydrochloric acid.
The nonwoven polishing wheels of examples 1-3 above were prepared by the following steps:
s1 sizing: uniformly mixing the composite phase-change microcapsule, resin, a curing agent, a lubricant, an abrasive and toner, uniformly coating the mixture on non-woven fabric cellucotton in a rolling mode, laminating the non-woven fabric cellucotton in a fixed grinding tool according to the required thickness, and placing the non-woven fabric cellucotton in an oven for curing reaction and forming;
s2 solidification after punch forming: and (4) releasing the non-woven fabric fiber cotton block subjected to the step S1 from a fixed die, airing to a certain hardness, punching out the required size specification in a punch press, and finally entering an oven for post-curing reaction to obtain a finished product.
In the nonwoven fabric polishing wheel prepared in examples 1 to 3, the organic phase change material is dispersed in the nonwoven fabric polishing wheel system in the form of an independent microcapsule, so that the nonwoven fabric polishing wheel of the original system is not damaged, the phase change material dispersed in the nonwoven fabric polishing wheel plays a role in absorbing heat and lubricating, the grinding force is not weakened, and the polishing wheel is not softened, and the sand falling and fluffing are not caused.
Therefore, the quality of the non-woven fabric polishing wheel is not reduced due to the fact that too much phase-change material is added into the non-woven fabric, the addition amount of the phase-change material can be adjusted randomly according to requirements in production, and polishing requirements of high-quality workpieces are met.
In addition, the preparation method is simple and rapid, can keep the characteristics of the composite phase change microcapsule, does not damage the system structure and the mechanical strength of the original non-woven fabric polishing wheel, enables the addition amount of the phase change material to be randomly adjusted, improves the bonding capability, the wear resistance and the glossiness of a polished workpiece, and is suitable for popularization and application.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (1)
1. A non-woven fabric polishing wheel containing composite phase-change microcapsules comprises non-woven fabrics, abrasive materials, resin, a curing agent, a lubricant and a heat absorbent, and is characterized in that: the heat absorbent is a composite phase-change microcapsule and comprises a core and a shell coated on the surface of the core, wherein the core is an organic phase-change material;
the shell of the composite phase-change microcapsule is formed by compounding resin comprising one or more of urea-formaldehyde resin, phenolic resin, polyurethane, melamine ester and acrylic resin;
the resin raw materials for preparing the shell comprise urea, formaldehyde, acrylic acid, methyl methacrylate, styrene, melamine, an emulsifier, an initiator, an alkaline inhibitor and an acidic initiator;
the organic phase change material is prepared by compounding one or more organic phase change materials of stearic acid and salt thereof, paraffin, edible wax, fully refined paraffin, semi-refined paraffin, crude paraffin, soap wax, high molecular wax, palm wax and Fischer-Tropsch wax;
the emulsifier comprises one or a mixture of more of Styrene Maleic Anhydride (SMA), dioctyl sodium sulfosuccinate, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, octyl phenol polyoxyethylene ether 0P10, nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and isomeric alcohol ether;
the initiator comprises one or a mixture of more of dibenzoyl peroxide, ammonium peroxydisulfate, di-tert-butyl hydroperoxide, azobisisobutyronitrile, cumene hydroperoxide, dimethyl azobisisobutyrate and tert-amyl peroxy-2-ethylhexanoate;
the alkaline inhibitor comprises organic alkali and inorganic alkali, and comprises one or more of sodium carbonate, sodium bicarbonate, sodium hydroxide, sodium ethoxide, triethanolamine, diethanolamine and monoethanolamine;
the acidic initiator comprises one or more of formic acid, acetic acid, sulfamic acid, glycolic acid, hydrochloric acid, phosphoric acid, nitric acid and sulfuric acid;
the preparation method of the non-woven fabric polishing wheel containing the composite phase-change microcapsules comprises the following steps:
s1 sizing: uniformly mixing the composite phase-change microcapsule, resin, a curing agent, a lubricant, an abrasive and toner, uniformly coating the mixture on non-woven fabric cellucotton in a rolling mode, laminating the non-woven fabric cellucotton in a fixed grinding tool according to the required thickness, and placing the non-woven fabric cellucotton in an oven for curing reaction and forming;
s2 solidification after punch forming: and (4) releasing the non-woven fabric fiber cotton block subjected to the step S1 from a fixed die, airing to a certain hardness, punching out the required size specification in a punch press, and finally entering an oven for post-curing reaction to obtain a finished product.
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| CN202010241844.0A CN111360709B (en) | 2020-03-31 | 2020-03-31 | Non-woven fabric polishing wheel containing composite phase change microcapsules and preparation method thereof |
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| CN202010241844.0A CN111360709B (en) | 2020-03-31 | 2020-03-31 | Non-woven fabric polishing wheel containing composite phase change microcapsules and preparation method thereof |
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| CN111360709B true CN111360709B (en) | 2022-03-25 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1259006A (en) * | 1969-02-05 | 1972-01-05 | ||
| JPH08108373A (en) * | 1994-10-07 | 1996-04-30 | Minnesota Mining & Mfg Co <3M> | Nonwoven fabric abrasive material containing capsule incorporating lubricant as core substance |
| JPH09201762A (en) * | 1996-01-30 | 1997-08-05 | Matsushita Electric Ind Co Ltd | Fine polishing tool, and manufacturing, dressing and polishing method for it |
| CN1888303A (en) * | 2006-06-09 | 2007-01-03 | 华南理工大学 | Method for producing textile cloth and packaging material containing micro-capsule phase change material |
| CN201023216Y (en) * | 2007-04-02 | 2008-02-20 | 天津市克鲁格科工贸有限公司 | Shallow anther sac polishing cloth |
| CN104816257B (en) * | 2015-05-14 | 2017-10-17 | 湖北小蚂蚁金刚石工具有限公司 | The manufacturing process of wire mark formula casting method diamond dry grinding disc |
| CN109048698B (en) * | 2018-06-22 | 2020-08-28 | 广东伟艺研磨技术开发有限公司 | Polyurethane polishing wheel and preparation method thereof |
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