CN110774183A - Ultrathin and ultra-soft smooth abrasive cloth and production process thereof - Google Patents
Ultrathin and ultra-soft smooth abrasive cloth and production process thereof Download PDFInfo
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- CN110774183A CN110774183A CN201911059913.XA CN201911059913A CN110774183A CN 110774183 A CN110774183 A CN 110774183A CN 201911059913 A CN201911059913 A CN 201911059913A CN 110774183 A CN110774183 A CN 110774183A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0072—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using adhesives for bonding abrasive particles or grinding elements to a support, e.g. by gluing
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Abstract
The invention discloses an ultrathin and ultra-soft smooth abrasive cloth and a production process thereof, belonging to the field of coated abrasive tools. The ultrathin and ultra-soft smooth abrasive cloth comprises a cloth base substrate, a bottom glue layer positioned on one side surface of the cloth base substrate, an abrasive layer at least partially embedded into the bottom glue layer and a compound glue layer coated on the abrasive layer, wherein the compound glue layer contains epoxy modified phenolic resin; the epoxy modified phenolic resin is prepared from phenolic resin, epoxy resin, sodium oxide and water. The epoxy modified phenolic resin is used as the compound adhesive layer, has the advantages of small shrinkage rate, good adhesion and mechanical properties, difficult falling of the middle abrasive layer, longer service life and obviously improved flatness, softness and strength parameters of the product.
Description
Technical Field
The invention belongs to the field of coated abrasive tools, and particularly relates to an ultrathin and ultra-soft smooth abrasive cloth and a production process thereof.
Background
The coating mould is a grinding tool which fixes abrasive materials on flexible base materials such as paper, cloth, films or composite matrixes and the like by using an adhesive, is also called as a flexible grinding tool, mainly comprises abrasive cloth (paper) or abrasive belts, and is widely used for grinding, polishing and sanding of non-metal materials such as metal materials, wood, ceramics, plastics, leather, rubber, paint putty and the like. Coated abrasives are generally composed of an abrasive, a binder and a matrix, and are generally manufactured by a process including the steps of matrix treatment, primer coating, sand planting, glue coating (coating), drying, cutting and shaping.
The prior art with the Chinese patent application publication number of CN107344336A discloses a composite substrate polishing grinding tool and a preparation method thereof, wherein the composite substrate polishing grinding tool comprises a composite substrate and an abrasive adhered to the composite substrate, the composite substrate is formed by compounding a TPU film and a PET film through a modified adhesive, and the modified adhesive is prepared from 100 parts of modified polyurethane resin, 10-20 parts of a curing agent, 5-30 parts of a filler and 10-40 parts of an organic solvent. The prior art enables the high-elasticity TPU film and the high-strength PET film to be firmly bonded together, so that the composite base material has high mechanical strength, heat resistance, wear resistance and excellent elasticity and flexibility, and the manufactured polishing grinding tool meets the requirements of precise polishing such as paint surface repair, irregular surface and curved surface. However, the use of TPU film as a substrate has problems such as easy damage of the film, poor adhesion, short service life, and high import price, and how to improve the service life of the abrasive cloth without affecting other characteristics of the abrasive cloth is a technical problem to be solved in the art.
The prior art with the Chinese patent application publication number of CN102039561A discloses a special grinding material for a high-precision PCB and a manufacturing method thereof, wherein the composite grinding abrasive cloth comprises a base material, a primer adhesive, a grinding material and a compound adhesive; the primer adhesive includes: phenolic resin, filler, surfactant and diluent; the compound adhesive comprises: phenolic resin, a high-efficiency leveling agent, an antistatic agent, a filler, a coupling agent, an inorganic pigment and a diluent. The manufacturing method comprises a base material treatment process, a sand planting process, a curing process, a water-carrying bending process and a cutting and belt-connecting process; the base material processing procedure comprises a singeing procedure, an alkali washing procedure, a water washing procedure, a high-temperature shaping procedure, a shaping treatment procedure, an elastic treatment procedure, a coating procedure and an edge cutting procedure. This prior art PCB board surface is effectual when grinding, and Ra is low, can not corrode the surface during grinding, can not have too much residue.
However, the final formed abrasive cloth in the prior art is hard, the finished abrasive cloth has poor softness, and the work piece is easily scratched, and the development of the abrasive cloth with good softness is urgently needed to solve the problems.
Disclosure of Invention
1. Problems to be solved
Aiming at the problem of poor softness of abrasive cloth in the prior art, the invention provides the ultrathin and ultra-soft smooth surface abrasive cloth and the production process thereof.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the utility model provides an ultra-thin super soft plain noodles emery cloth, includes cloth base material, is located primer layer, at least partial embedding on the side of cloth base material the abrasive material layer of primer layer and coat in compound glue film on the abrasive material layer, compound glue film contains epoxy degeneration phenolic resin.
Preferably, the epoxy modified phenolic resin is prepared from phenolic resin, epoxy resin, sodium oxide and water.
Preferably, the molecular weight of the epoxy denatured phenolic resin is controlled to be 360-400, and the viscosity is 1200-1600 cps.
Preferably, in the preparation process of the epoxy modified phenolic resin, the weight percentage of the phenolic resin, the epoxy resin, the sodium oxide and the water is 100:96-98:2-3:4-6, and preferably 100:98:3: 6.
Preferably, the epoxy modified phenolic resin is dispersed in a mixed solvent, and the mixed solvent is a mixed solvent of toluene, methanol and butanone.
Preferably, the weight percentage of the toluene, the methanol and the butanone is 1:1: 1.
Preferably, the weight percentage of the epoxy modified phenolic resin to the mixed solvent is 207: 100.
Preferably, the compound adhesive layer is prepared by heating epoxy modified phenolic resin to 120 ℃, keeping the temperature for 2 hours, immediately cooling to 80 ℃, and mixing with a solvent.
Preferably, the surface of the compound adhesive layer is further coated with an anti-blocking coating, and the anti-blocking coating comprises modified water-based zinc stearate.
Preferably, the modified water-based zinc stearate is a mixed water solution of zinc stearate and cellulose, the weight percentage of the zinc stearate to the cellulose is 10 (3-5), and the modified water-based zinc stearate is fully stirred until the zinc stearate and the cellulose are dissolved and dispersed.
Preferably, the gram weight absolute dry weight of the cloth-based substrate is 40-100g/m
2. The fabric base material has good softness, good fitting property when being attached to a sponge or a flexible matrix, good metal performance when being used for polishing plastic glass fibers.
Preferably, the cloth-based substrate is made of chemical fibers, and is impregnated and coated with a mixed solution of latex, phenolic resin and polyvinyl alcohol (PVA) and is shaped at a high temperature of 130-160 ℃.
Preferably, the mass ratio of each component of the mixed solution is as follows: latex, phenolic resin and polyvinyl alcohol (PVA) ═ 10-15: 1: 1.5.
Preferably, the bottom glue layer is made of a soft polyurethane waterproof material, such as PU-3541 waterborne polyurethane resin of Guangzhou Hunyyuke New Material Co.
Preferably, the soft polyurethane waterproof material comprises the following components in percentage by weight: polyurethane: the curing agent is 5: 1.
A production process of ultrathin and ultra-soft smooth abrasive cloth comprises the following steps:
s1 processing the cloth base substrate;
s2 manufacture of abrasive cloth product, sequentially comprising the following steps: coating base glue, electrostatic sand planting, drying, coating compound glue, drying, rolling, curing, flexing, coating an anti-blocking coating and splitting.
Preferably, the step S1 includes: dipping the cloth base substrate into a mixed solution consisting of latex, phenolic resin and polyvinyl alcohol (PVA), coating and drying by a tentering setting machine to ensure that the cloth surface is smooth and impermeable, and setting at high temperature in drying rooms with different temperature regions of 130-;
preferably, the step S2 includes:
s2-1, after the cloth-based base material is shaped and dried, coating a soft polyurethane waterproof material on the sand-planted surface to form a primer layer;
s2-2, when the bottom glue layer is semi-dry, performing electrostatic sand planting through an electrostatic sand planting machine to form a grinding material layer;
s2-3, predrying the bottom glue layer through a drying room, mixing the epoxy modified phenolic resin with a solvent, extruding and coating the mixture to the abrasive layer through a pair of rollers, and primarily curing the mixture through a constant-temperature drying room at 120 ℃ for 2-4 hours to primarily cure the epoxy modified phenolic resin and then rolling the cured mixture;
s2-4 curing: placing the mixture in a curing furnace for curing for 48 hours, taking the mixture out of the furnace and placing the mixture for 2 days, and then cooling and radiating the mixture;
s2-5, coating modified water-based zinc stearate after bending to form an anti-blocking layer;
and S2-6, splitting.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) the epoxy modified phenolic resin is adopted as the compound adhesive layer, and the epoxy resin is adopted as the modifier, so that the modified epoxy phenolic resin not only has excellent toughness of the epoxy resin, but also has better adhesive property with the primer layer, the epoxy modified phenolic resin has small shrinkage rate, good adhesive property and mechanical property, the middle abrasive layer is not easy to fall off, the service life is longer, and the flatness, the softness and the strength parameters of the product are obviously improved and are better than those of imported products; meanwhile, the base material of the cloth is adopted, so that compared with an imported product with a TPU film as the base material, the base material is not easy to damage in the using process, and the service life of the abrasive cloth is further prolonged;
(2) the adhesive coating of the abrasive cloth adopts epoxy modified phenolic resin which is prepared from phenolic resin, epoxy resin, sodium oxide and water, the molecular weight of the epoxy modified phenolic resin is controlled to be 360-inch-plus 400 and/or the viscosity is 1200-inch-plus 1600cps, the finally formed abrasive cloth has good flexibility under the condition, and the radial breaking strength, the transverse breaking strength, the 600N elongation, the radial breaking elongation and the transverse breaking elongation can reach the level equivalent to that of imported TPU;
(3) in the preparation process of the epoxy modified phenolic resin, the phenolic resin is dispersed in a mixed solvent of toluene, methanol and butanone, so that the preparation of the epoxy modified phenolic resin with specific required molecular weight and viscosity is facilitated;
(4) the anti-blocking coating adopted by the invention has good anti-blocking performance after being coated, and the service life is prolonged.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention is further described with reference to specific examples.
Example 1
Preparation of soft polyurethane waterproof material
The bottom glue layer is made of a soft polyurethane waterproof material, and the polyurethane is made of PU-3541 waterborne polyurethane resin of Guangzhou Henyuan new material company Limited. The soft polyurethane waterproof material comprises the following components in percentage by weight: polyurethane: the curing agent is 10:1 toluene solution, wherein the curing agent adopts amine curing agent, in particular to Guangzhou Henryzing new material company H-1001 curing agent.
Process for preparing epoxy modified phenolic resin
Putting 100KG of phenol, 86KG of formaldehyde, 0.35KG of oxalic acid and 10KG of water into a reaction kettle, stirring (60-100 rpm), and heating (refluxing) at 60 ℃; adding 10% by mass of HCl to adjust pH to 5, heating at 90 ℃ for 2 hours to 135 minutes for condensation, adding 100kg of cold water after the reaction is stopped, standing for 30 minutes, and removing external water by using a water absorption pipe to obtain the phenolic resin. The molecular weight of the phenolic resin obtained by the method is 360-400; the viscosity was 1200-1600 cps.
The phenolic resin prepared by the method is 100 KG: epoxy resin (epoxy resin: purchased from China petrochemical, model number CYD-128)98 KG: sodium oxide 3 KG: heating 6KG water at 120 deg.c for 2 hr, stopping heating, lowering the temperature to 80 deg.c, adding 100KG of mixture, and obtaining mixed glue as the epoxy modified phenolic resin as the glue coating layer.
Preparation process of modified water-based zinc stearate
Taking 30-50KG of cellulose (the larger the viscosity is, the larger the cellulose component is), adding a proper amount of water, fully stirring until the cellulose is completely dissolved, adding a 100KG zinc stearate stirring machine, and stirring for 4 hours to obtain the modified water-based zinc stearate used as the anti-blocking layer.
Production process of abrasive cloth
A production process of ultrathin and ultra-soft smooth abrasive cloth comprises the following steps: the method comprises the following steps of (1) treating a cloth base material and manufacturing an abrasive cloth product, wherein the manufacturing of the abrasive cloth product comprises the following steps: coating base glue, electrostatic sand planting, drying, coating compound glue, drying, rolling, curing, flexing, coating a third coating and coiling, and the method specifically comprises the following steps:
the cloth base treatment comprises the following specific processes:
the absolute dry weight of the gram weight is 40 to 60g/m
2The cloth-based base material is soaked in a mixed solution of latex, phenolic resin and polyvinyl alcohol (PVA) in a weight ratio of 10:1:1, the cloth surface is smooth and impermeable by coating and drying through a tentering setting machine, and then the cloth is set at a high temperature in a drying room with different temperature zones of 130-160 ℃ (the inlet temperature is gradually increased to the outlet temperature);
(II) after the base material layer is shaped and dried, coating the soft polyurethane waterproof material on the surface of the base material to be planted with sand to form a primer layer, wherein the coating amount of the primer layer is 5-10g/m
2；
Thirdly, when the bottom glue layer is semi-dry, the sand is planted through the electrostatic sand planting machine imported from Germany, the sand granularity is 2500 meshes, and the sand planting amount is 30-50g/m
2Forming an abrasive layer;
(IV) predrying the bottom glue layer through a drying room, preliminarily curing the bottom glue layer, bonding the abrasive layer to ensure that the abrasive does not fall off when the composite glue layer is coated, mixing the prepared epoxy modified phenolic resin of the composite glue layer into a solvent, and then extruding and coating the epoxy modified phenolic resin of the composite glue layer to the abrasive layer through a pair of rollers, wherein the coating amount is 20-40g/m
2Then primarily curing the epoxy modified phenolic aldehyde for 2 to 4 hours (adjusting curing time according to the length of a production line) by a constant-temperature drying room with the temperature of 120 ℃ so as to primarily cure the epoxy modified phenolic aldehyde and then rolling the epoxy modified phenolic aldehyde;
(V) curing: placing in a curing furnace, curing at 80-90 deg.C for 48 hr, taking out, standing for 2 days, cooling and dissipating heat;
(VI) after the dough is kneaded, the modified water-based zinc stearate is coated, and the coating amount is 10-20g/m
2Adjusted according to the size of the abrasive particles;
and (seventhly) dividing into rolls.
The emery cloth prepared in this example is 2500 meshes, and the weight is 150-
20.14mm in thickness, which is similar to the thinnest 2500 TPU soft film sold under the same conditions; the sand hardness is 75 +/-3 (Shore hardness).
The strength parameters of the abrasive cloth prepared in the embodiment were measured at normal temperature using a drawing apparatus model YG026C, a second textile apparatus and plant Ltd, Changzhou, to obtain an abrasive cloth with a radial breaking strength of 656N/5CM and a transverse breaking strength of 386N/5 CM; the elongation at 600N is 16.5%, the elongation at break in the radial direction is 18.6%, the elongation at break in the transverse direction is 20.7%, and under the same test conditions, the radial breaking strength and the transverse breaking strength of the abrasive cloth made of the 2500-mesh TPU soft film (only the cloth base is replaced by the TPU film) adopting the same scheme in the embodiment are 661N/5CM and 375N/5CM respectively; the elongation of 600N is 16.2%, the elongation at break in the radial direction is 19.0%, and the elongation at break in the transverse direction is 20.5%, so that the cloth-based abrasive cloth obtained by adopting the scheme of the invention can reach the strength similar to that of the imported TPU soft film abrasive cloth, and the obtained abrasive cloth product can effectively replace the abrasive cloth made of the imported TPU soft film, thereby saving the cost.
The abrasive cloth of the cloth-based substrate prepared by the embodiment has good softness, good fitting property when being attached to a sponge or a flexible substrate, and good metal performance when being used for polishing plastic glass fibers. The product with the knife lines on the surface is polished by the abrasive paper of the model, the surface of the product is smooth and fine after sanding, and bad results such as sanding marks and the like caused by the abrasive paper are avoided.
Comparative example 1A
In this comparative example, the other preparation methods were the same as in example 1 except that:
the compound glue layer adopts phenolic resin before epoxy modification in example 1; the coating amount and other conditions were the same as those in example 1, and a coated abrasive 2500-1A was obtained.
Measuring the strength parameters of the abrasive cloth 2500-1A prepared in the comparative example by adopting equipment with the same model and conditions as those of the example 1 to obtain the abrasive cloth with the radial rupture strength of 493N/5CM and the transverse rupture strength of 221N/5 CM; the elongation at 600N was 9.5%, the elongation at break in the radial direction was 10.2%, and the elongation at break in the transverse direction was 11.1%.
From the above results, it can be seen that: compared with the unmodified phenolic resin as the compound adhesive, the epoxy modified phenolic resin in the embodiment 1 is adopted as the compound adhesive, the strength parameter is obviously improved, and the elongation under each condition is also obviously improved.
Example 2
The method and materials for preparing the abrasive cloth in the embodiment are basically the same as those in the embodiment 1, except that:
the gram weight absolute dry weight of the cloth-based base material is 50-80g/m
2；
The coating amount of the primer layer is 7-12g/m
2；
The grain size of the planting sand is 1500 meshes, and the planting sand amount is 40-60g/m
2；
The coating amount of the compound adhesive layer is 30-50g/m
2；
The coating amount of the modified waterborne zinc stearate of the anti-blocking coating is 10-18g/m
2；
The emery cloth prepared in this example is 1500 meshes, and the weight is 160-
2And the thickness is 0.14 mm.
Measuring the strength parameters of the abrasive cloth prepared in the embodiment by adopting the stretching equipment with the same model as the embodiment 1 under the normal temperature condition to obtain the radial breaking strength of the abrasive cloth of 638N/5CM and the transverse breaking strength of the abrasive cloth of 361N/5 CM; the elongation at 600N was 16.1%, the elongation at break in the radial direction was 17.9%, and the elongation at break in the transverse direction was 20.5%.
The prepared abrasive cloth has good softness, is well attached to a sponge or a flexible substrate, and the properties of the plastic glass fiber and the metal can reach the level of imported TPU soft membrane abrasive cloth.
Example 3
The method and materials for preparing the abrasive cloth in the embodiment are basically the same as those in the embodiment 1, except that:
the gram weight absolute dry weight of the cloth-based base material is 50-80g/m
2；
The coating amount of the primer layer is 10-15g/m
2；
The grain size of the planting sand is 400 meshes, and the planting sand amount is 70-100g/m
2；
The coating amount of the compound adhesive layer is 50-70g/m
2；
The coating amount of the modified waterborne zinc stearate of the anti-blocking coating is 20-30g/m
2；
The emery cloth prepared in this example is 400 meshes, and the weight is 220-240g/m
2The thickness is 0.2 mm.
Measuring the strength parameters of the abrasive cloth prepared in the embodiment by adopting the stretching equipment with the same model as the embodiment 1 under the normal temperature condition to obtain the radial breaking strength of the abrasive cloth of 634N/5CM and the transverse breaking strength of 400N/5 CM; the elongation at 600N was 16.4%, the elongation at break in the radial direction was 18.9%, and the elongation at break in the transverse direction was 19.5%.
The prepared abrasive cloth is soft, has good adhesion on a sponge or a flexible substrate, and has good metal performance after being polished by plastic glass fibers.
The 400-mesh abrasive cloth is made into 3-inch sponge sand with back fluff for polishing test pieces, and the requirements of customers on hundred-grade polishing effects are met.
Example 4
The method and materials for preparing the abrasive cloth in the embodiment are basically the same as those in the embodiment 1, except that:
the gram weight absolute dry weight of the cloth-based base material is 50-80g/m
2；
The coating amount of the primer layer is 15-20g/m
2；
The grain size of the planting sand is 280 meshes, and the planting sand amount is 80-100g/m
2；
The coating amount of the compound adhesive layer is 80-90g/m
2；
The coating amount of the modified waterborne zinc stearate of the anti-blocking coating is 30-40g/m
2；
The emery cloth prepared in the embodiment is 280 meshes, and the weight is 260-290g/m
2The thickness is 0.4-0.8 mm.
Example 5
The method and materials for preparing the abrasive cloth in the embodiment are basically the same as those in the embodiment 1, except that:
the gram weight absolute dry weight of the cloth-based base material is 50-80g/m
2；
The coating amount of the primer layer is 20-30g/m
2；
The grain size of the planting sand is 180 meshes, and the planting sand amount is 110-120g/m
2；
The coating amount of the complex adhesive layer is 110-120g/m
2；
The coating amount of the modified waterborne zinc stearate of the anti-blocking coating is 50-60g/m
2；
The emery cloth prepared in this example is 180 meshes, and the weight is 320-340g/m
2The thickness is 0.5-1.0 mm.
Example 6
The method and materials for preparing the abrasive cloth in the embodiment are basically the same as those in the embodiment 1, except that:
the gram weight absolute dry weight of the cloth-based base material is 50-80g/m
2；
The coating amount of the primer layer is 25-30g/m
2；
The grain size of the planting sand is 150 meshes, and the planting sand amount is 130-140g/m
2；
The coating amount of the complex adhesive layer is 120-130g/m
2；
The coating amount of the modified waterborne zinc stearate of the anti-blocking coating is 50-70g/m
2；
The emery cloth prepared in the embodiment is 150 meshes, and the weight is 350-370g/m
2The thickness is 0.5-1.0 mm.
The above description is illustrative of the present invention and its embodiments, and is not to be construed as limiting, and the actual techniques are not limited thereto. Therefore, if the person skilled in the art receives the teaching, it is within the scope of the present invention to design the similar manner and embodiments without departing from the spirit of the invention.
Claims (10)
1. The utility model provides an ultra-thin super soft plain noodles emery cloth, its characterized in that includes the base material of cloth, is located primer layer, at least partial embedding on the side of base material of cloth abrasive layer and coat in compound glue film on the abrasive layer, compound glue film contains epoxy modified phenolic resin.
2. The ultra-thin, ultra-soft smooth cloth of claim 1 wherein the epoxy modified phenolic resin is prepared from phenolic resin, epoxy resin, sodium oxide and water.
3. The ultra-thin ultra-soft smooth cloth of claim 2, wherein the molecular weight of the epoxy modified phenolic resin is controlled to be 360-400 and/or the viscosity is 1200-1600 cps.
4. The ultra-thin super-soft smooth surface abrasive cloth according to claim 3, wherein in the preparation process of the epoxy modified phenolic resin, the weight percentage of the phenolic resin, the epoxy resin, the sodium oxide and the water is 100:96-98:2-3: 4-6.
5. The ultra-thin ultra-soft smooth cloth of claim 4, wherein the epoxy modified phenolic resin is dispersed in a mixed solvent, and the mixed solvent is a mixed solvent of toluene, methanol and butanone.
6. The ultra-thin ultra-soft smooth abrasive cloth according to any one of claims 1 to 5, wherein the surface of the compound adhesive layer is further coated with an anti-clogging coating, and the anti-clogging coating comprises modified water-based zinc stearate.
7. The ultra-thin super-soft smooth abrasive cloth of claim 6, wherein the modified water-based zinc stearate is a mixed aqueous solution of zinc stearate and cellulose, the weight percentage of the zinc stearate to the cellulose is 10 (3-5), and the mixture is fully stirred until dissolved and dispersed.
8. The ultra-thin and ultra-soft smooth abrasive cloth of claim 7, wherein the cloth-based substrate is made of chemical fiber, and the cloth-based substrate is impregnated and coated with a mixture of latex, phenolic resin and polyvinyl alcohol.
9. A production process of the ultrathin and ultra-soft plain abrasive cloth according to any one of claims 1 to 5, characterized by comprising the following steps:
s1 processing the cloth base substrate;
s2 manufacture of abrasive cloth product, sequentially comprising the following steps: coating base glue, electrostatic sand planting, drying, coating compound glue, drying, rolling, curing, flexing, coating an anti-blocking coating and splitting.
10. The process of claim 9, wherein the step S1 includes: dipping the cloth base substrate into a mixed solution consisting of latex, phenolic resin and polyvinyl alcohol, coating and drying by a tentering setting machine to enable the cloth surface to be smooth and impermeable, and setting at high temperature in drying rooms with different temperature regions of 130-;
and/or said step S2 comprises:
s2-1, after the cloth-based base material is shaped and dried, coating a soft polyurethane waterproof material on the sand-planted surface to form a primer layer;
s2-2, when the bottom glue layer is semi-dry, performing electrostatic sand planting through an electrostatic sand planting machine to form a grinding material layer;
s2-3, predrying the bottom glue layer through a drying room, mixing the epoxy modified phenolic resin with a solvent, extruding and coating the mixture to the abrasive layer through a pair of rollers, and primarily curing the epoxy modified phenolic resin through the drying room and then rolling the epoxy modified phenolic resin after the epoxy modified phenolic resin is primarily cured;
s2-4 curing: placing the mixture in a curing furnace for curing, and taking the mixture out of the furnace for cooling and radiating;
s2-5, coating modified water-based zinc stearate after bending to form an anti-blocking layer;
and S2-6, splitting.
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| CN112792752A (en) * | 2021-01-29 | 2021-05-14 | 韶关辰锐研磨材料有限公司 | Abrasive cloth |
| CN113770927A (en) * | 2021-09-18 | 2021-12-10 | 北京利研科技有限公司 | Long-life stamping grinding belt and preparation method thereof |
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| CN102699837A (en) * | 2012-06-26 | 2012-10-03 | 谢泽 | Method for manufacturing hard cloth-based industrial abrasive belt based on non-woven fabric |
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| CN112792752A (en) * | 2021-01-29 | 2021-05-14 | 韶关辰锐研磨材料有限公司 | Abrasive cloth |
| CN113770927A (en) * | 2021-09-18 | 2021-12-10 | 北京利研科技有限公司 | Long-life stamping grinding belt and preparation method thereof |
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Denomination of invention: An ultra-thin and ultra soft smooth abrasive cloth and its production process Effective date of registration: 20220531 Granted publication date: 20210423 Pledgee: China Construction Bank Corporation Tongcheng sub branch Pledgor: Goodsun new material technology Hubei Co.,Ltd. Registration number: Y2022980006842 |
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