CN101966694B - High-performance elastic composite abrasive sheet and preparation method thereof - Google Patents

High-performance elastic composite abrasive sheet and preparation method thereof Download PDF

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Publication number
CN101966694B
CN101966694B CN2010105076460A CN201010507646A CN101966694B CN 101966694 B CN101966694 B CN 101966694B CN 2010105076460 A CN2010105076460 A CN 2010105076460A CN 201010507646 A CN201010507646 A CN 201010507646A CN 101966694 B CN101966694 B CN 101966694B
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glue
percent
elastic composite
sand
abrasive sheet
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CN2010105076460A
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Chinese (zh)
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CN101966694A (en
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王鹏
王荣生
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江苏省新型复合研磨材料及制品工程技术研究中心
江苏锋芒复合材料科技集团有限公司
扬中市江南砂布有限公司
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Abstract

The invention belongs to the field of coated abrasives, and relates to a high-performance elastic composite abrasive sheet and a preparation method thereof. The high-performance elastic composite grinding sheet comprises a vulcanized paper back base, bottom glue, abrasive and complex glue, wherein the bottom glue comprises the following compositions in percentage by weight: 25 to 40 percent of phenolic resin A, 15 to 40 percent of phenolic resin B, 30 to 58 percent of fillers, 0.1 to 1.5 percent of surfactant and 0.1 to 15 percent of diluent; and the complex glue comprises the following compositions in percentage by weight: 15 to 70 percent of phenolic resin C, 15 to 70 percent of phenolic resin D, 0.1 to 3 percent of efficient flatting agent, 5 to 60 percent of fillers, 0.1 to 1.0 percent of coupling agent, 1 to 5 percent of pigment, and 0.1 to 10 of thinner. The method for preparing the high-performance elastic composite abrasive sheet comprises the steps of bottom glue coating process, grain coating process, complex glue coating process, post curing process, curly sand surface flatting process, laser cutting process, vulcanized paper deformation preventing process and storage process, wherein in the post curing process, the sand surface is curly outwards, and after the curly sand surface flatting process, the sand surface is curly inwards so as to enable the sand surface to be flat. The invention can effectively prevent deformation, and has the advantages of strong tensile strength, good adhesive performance and strong grinding performance.

Description

High-effect elastic composite abrasive sheet and preparation method thereof

Technical field

The invention belongs to the coated abrasive tool field, relate to high-effect elastic composite abrasive sheet and preparation method thereof.

Background technology

The vulcan fibre emery disc is claimed vulcan fibre abrasive disc, high speed abrasive disc, abrasive disk again, and it is to be base material with the vulcan fibre, is a kind of plate-like coated abrasive tool that binding agent is processed with synthetic resin.Its tensile strength is big, the wearability extra-heavy; Can be installed on the electronic or pneumatic electric angle grinder to metal and the various profiles of nonmetallic materials eliminate rust, deburring, coating removal, polishing welding seams; The ideal tools that is grinding in furniture manufacturing and the repair of machine work, polishes, polishes is widely used in timber, furniture, shipbuilding, metallurgy, automobile, machinery, instrument, bridge and building trade.

At present, both at home and abroad to the research of vulcan fibre emery disc with use morely, be mainly reflected in and improve application performance and anti-deformation aspect of performance.CN201420209Y has proposed a kind of new waterleaf paper for velcanized fiber, mainly is evenly to be coated with the strong fibrage that one deck is processed by cotton fiber on the vulcan fibre surface, makes that the parchmentizing of body paper is effective, water imbibition is strong.CN201419364Y has proposed a kind of high strength steel cardboard, mainly is in vulcanized fiber board basic unit, to have zinc chloride gel layer, makes that its service time is longer, grinding effect is better.CN101180159A has improved the distortion situation of vulcan fibre emery disc significantly through the vulcan fibre backing is handled effectively, has improved service life simultaneously.CN200939582Y has proposed a kind of enhancing noise reduction vulcan fibre emery disc, mainly is through on emery disc, increasing well-regulated open-work and curved grooves, when grinding is used, improve aerodynamic profile, reaching the effect of obvious reduction grinding noise.CN101235261A has proposed a kind of preparation method of aerodux, and the vulcan fibre emery disc that uses this phenol aldehyde adhesive to make has significantly improved adhesive property, shear strength and moisture resistance ability.CN201179618Y is bonding layer of glass grid cloth on the vulcan fibre base material, has improved the mechanical strength and the adhesive strength of goods; Improve the distortion that receives temperature and humidity to influence generation simultaneously, improved service life.CN201276524Y has proposed a kind of resin laminate abrasive sheet, mainly is through fabricbase being sticked on the epoxy resin fiberglass laminate with 5 layers, improving performances such as distortion, mechanical strength, impact strength, antistatic with this.CN201376239Y proposes a kind of anti-deformation chuck, can conveniently be used for fixing coated abrasive tool products such as vulcan fibre emery disc, has realized use a slice taking-up a slice, has prevented the distortion of vulcan fibre emery disc in storing process effectively.

Though the problem that below from different perspectives the vulcan fibre emery disc is existed has proposed concrete solution, the use of vulcan fibre emery disc is a comprehensive problem, still need continue to improve.

Summary of the invention

Technical problem to be solved by this invention is: the shortcoming to above prior art exists, high-effect elastic composite abrasive sheet and preparation method thereof is proposed, and can effectively prevent distortion, tensile strength is big, and adhesive property is good, and grinding performance is strong.

The technical scheme that the present invention solves above technical problem is:

A kind of high-effect elastic composite abrasive sheet comprises vulcan fibre back of the body base, primer, abrasive material and multiple glue;

Primer comprises following component by weight percentage:

Phenol-formaldehyde A 25-40%

Bakelite B 15-40%

Filler 30-58%

Surfactant 0.1-1.5%

Diluent 0.1-15%;

Phenol-formaldehyde A is the lower first rank water soluble phenol resin of free phenol content, and its index is following: solid content 72-75%, and viscosity 800-1500cps/25 ℃, pH is 7.5-8.5/25 ℃, gel time 7-10min/130 ℃, free phenol content 3-5%; Bakelite B is the higher first rank water soluble phenol resin of free phenol content, and its index is following: solid content 72-75%, and viscosity 800-1500cps/25 ℃, pH is 7.5-8.5/25 ℃, gel time 7-10min/130 ℃, free phenol content＞8%; Filler is at least a in coarse whiting, fine particle calcium carbonate, chalky soil, diatomite or the wollastonite powder; Surfactant is at least a in aliphatic sulfonic thing, alkyl aryl sulphonic acid thing, alkyl naphthalene sulfonic acid thing, Span or the polyoxyethylene sorbitan fatty acid ester; Diluent is at least a in methyl alcohol, ethanol, acetone, ethyl acetate, ethylene glycol monoethyl ether, diethylene glycol ether or the water;

Multiple glue comprises following component by weight percentage:

Bakelite C, 15-70%

Phenolic resins D, 15-70%

Efficient levelling agent, 0.1-3%

Filler, 5-60%

Coupling agent, 0.1-1.0%

Pigment, 1-5%

Diluent 0.1-10%;

Bakelite C is low viscous first rank water soluble phenol resins, and its index is following: solid content 72-75%, and viscosity 400-800cps/25 ℃, pH is 7.5-8.5/25 ℃, gel time 8-12min/130 ℃; Phenolic resins D is full-bodied first rank water soluble phenol resins, and its index is following: solid content 72-75%, and viscosity 1500-3000cps/25 ℃, pH is 7.5-8.5/25 ℃, gel time 8-10min/130 ℃; Efficient levelling agent is at least a in organic silicon modified by polyether, alkyl-modified organosilicon, fluorin modified crylic acid ester polymer, alkyl diphenyl base oxide disulfonate, Span or the polyoxyethylene sorbitan fatty acid ester; Filler is at least a in calcium carbonate, silicate, hexafluoro sodium aluminate, potassium fluoborate, sodium fluoborate, calcirm-fluoride, sodium fluoride, calcium stearate or the zinc stearate; Coupling agent is at least a in silane coupler or the zirconium class coupling agent; Pigment is at least a in iron oxide red, iron oxide yellow, iron oxide black, iron oxide brown, phthalocyanine blue or the phthalocyanine green; Diluent is at least a in methyl alcohol, ethanol, acetone, ethyl acetate, ethylene glycol monoethyl ether, diethylene glycol ether or the water.

The preparation method of high-effect elastic composite abrasive sheet comprises the upper base glue process, plants the sand operation, upward glue process, back curing process, flexure band water conservancy project preface, cut operation, the anti-deformation process operation of vulcan fibre and storage operation again; Adopt sand to make the sand face keep smooth outward in the back curing process towards the mode of curling, adopt sand to combine again after the flexure band water conservancy project preface towards crimped, like this can the release of rational and effective control internal stress, reduce product deformation.

The technical scheme that the present invention further limits is:

Increase anti-blocking performance, product of the present invention can also contain the anti-clogging coating, and this coating can be embodied in the multiple glue, also can outside multiple glue, apply one deck again; Mainly contain compositions such as stearate, fluoride in the said anti-clogging coating, like stearic acid, zinc stearate, calcium stearate, hexafluoro sodium aluminate, potassium fluoborate, sodium fluoborate, calcirm-fluoride, sodium fluoride etc.;

Abrasive material is one or more in aluminium oxide, the calcining of middle temperature, high-temperature calcination aluminium oxide, carborundum, fused alumina zirconia, fused alumina zirconia or the microcrystalline alumina.

It is 0.6mm, 0.8mm or 1.0mm that vulcan fibre is carried on the back basic thickness.Wherein the performance indications of 0.8mm vulcan fibre back of the body base are: tensile strength:＞90MPa (MD),＞45MPa (CD); Percentage elongation:＜15% (MD),＜25% (CD); Percent thermal shrinkage (105 ℃/5h):＜2% (MD),＜3% (CD),＜6% (ZD); Density＞1.25g/cm3; Rupture strength＞2000kPa (23 ± 1 ℃, 50 ± 2%RH).

Adopt anti-deformation resin that vulcan fibre back of the body base is sprayed or coating processing, this operation can be carried out after cut, also can before printing, accomplish.Said anti-deformation resin is solvent type polyurethane resin, waterborne polyurethane resin, epoxy resin, phenolic resins, amino resins or acrylic resin.

In the flexure band water conservancy project preface, only carry out 90 ° of unidirectional flexures, water amount≤20g/m 2Use fixedly vulcan fibre emery disc of chuck, and store after using the waterproof plastic film to cover.

Advantage of the present invention is: in the manufacturing, can effectively prevent distortion, the product tensile strength is big, and adhesive property is good, and grinding performance is strong.

The specific embodiment

Embodiment one

Employing 0.8mm vulcan fibre (23 ± 1 ℃, 50 ± 2%RH): tensile strength:＞90MPa (MD),＞45MPa (CD); Percentage elongation:＜15% (MD),＜25% (CD); Percent thermal shrinkage (105 ℃/5h):＜2% (MD),＜3% (CD),＜6% (ZD); Density＞1.25g/cm3; Rupture strength＞2000kPa; Adopt 100# one-level palm fibre corundum, carry out electrostatic sand-planting; The part by weight prescription of its primer, multiple glue is following:

The part by weight prescription of the multiple glue in table 1 end

The preparation method of high-effect elastic composite abrasive sheet comprises the upper base glue process, plants the sand operation, upward glue process, back curing process, flexure band water conservancy project preface, cut operation and storage operation again; Adopt sand towards outer curling in the back curing process, adopt sand towards crimped again after the flexure band water conservancy project preface.

It is following to plant behind the sand curing process of primer: 60 ℃/10min+75 ℃/20min+90 ℃/20min; The curing process of multiple glue is following: 65 ℃/10min+75 ℃/30min+85 ℃/30min+90 ℃/20min+100 ℃/10min; Carried out cured then 118 ℃/6 hours, and carried out 90 ° of unidirectional flexures after the cooling, band water 9g/m 2, carry out laser cutting after parking 24h, the packing storage.

Embodiment two

Employing 0.8mm vulcan fibre (23 ± 1 ℃, 50 ± 2%RH): tensile strength:＞90MPa (MD),＞45MPa (CD); Percentage elongation:＜15% (MD),＜25% (CD); Percent thermal shrinkage (105 ℃/5h):＜2% (MD),＜3% (CD),＜6% (ZD); Density＞1.25g/cm3; Rupture strength＞2000kPa; Adopt 100# one-level high-temperature calcination aluminium oxide, carry out electrostatic sand-planting; The part by weight prescription of its primer, multiple glue is following:

The part by weight prescription of the multiple glue in table 2 end

The preparation method of high-effect elastic composite abrasive sheet comprises the upper base glue process, plants the sand operation, upward glue process, back curing process, flexure band water conservancy project preface, cut operation, the anti-deformation process operation of vulcan fibre and storage operation again; Adopt sand towards outer curling in the back curing process, adopt sand towards crimped again after the flexure band water conservancy project preface.

It is following to plant behind the sand curing process of primer: 60 ℃/10min+75 ℃/20min+90 ℃/20min; The curing process of multiple glue is following: 65 ℃/10min+75 ℃/30min+85 ℃/30min+90 ℃/20min+100 ℃/10min; Carried out cured then 118 ℃/6 hours, and carried out 90 ° of unidirectional flexures after the cooling, band water 9g/m 2, carry out laser cutting after parking 24h; Use the waterproof polyurethane resin to carry out the spraying of vulcan fibre back of the body base, the amount of being coated with 15g/m 2Back, dry back uses the anti-deformation chuck to fix the vulcan fibre emery disc, and uses the waterproof plastic film to cover the back storage.

Embodiment detects:

The mensuration of crimpness: the vulcan fibre emery disc is nature in (20 ± 2) ℃, (65 ± 5) %RH condition held 12h, concave surface is downward, lies on the flat board, measures the sunken value of maximum empty between dull and stereotyped and vulcan fibre emery disc with chi.

The mensuration of revolving strength: adopt the high speed rotary testing machine, revolution inspection speed is 112m/s, returns back to the constant 30s of desired speed and does not break.

Testing result:

The contrast of table 3 embodiment testing result

Numbering Crimpness, mm Revolving strength Embodiment one 10 Do not break Embodiment two 5 Do not break

The present invention can also have other embodiment, and the technical scheme that equal replacement of all employings or equivalent transformation form all drops within the scope of requirement protection of the present invention.

Claims (7)

1. high-effect elastic composite abrasive sheet comprises vulcan fibre back of the body base, primer, abrasive material and multiple glue, it is characterized in that:
Said primer comprises following component by weight percentage:
Phenol-formaldehyde A 25-40%
Bakelite B 15-40%
Filler 30-58%
Surfactant 0.1-1.5%
Diluent 0.1-15%;
Said phenol-formaldehyde A is the lower water-soluble resol of free phenol content, and its index is following: solid content 72-75%, and viscosity 800-1500cps/25 ℃, pH is 7.5-8.5/25 ℃, gel time 7-10min/130 ℃, free phenol content 3-5%; Said bakelite B is the higher water-soluble resol of free phenol content, and its index is following: solid content 72-75%, and viscosity 800-1500cps/25 ℃, pH is 7.5-8.5/25 ℃, gel time 7-10min/130 ℃, free phenol content＞8%; Said filler is at least a in coarse whiting, fine particle calcium carbonate, chalky soil, diatomite or the wollastonite powder; Said surfactant is at least a in aliphatic sulfonic thing, alkyl aryl sulphonic acid thing, alkyl naphthalene sulfonic acid thing, Span or the polyoxyethylene sorbitan fatty acid ester; Said diluent is at least a in methyl alcohol, ethanol, acetone, ethyl acetate, ethylene glycol monoethyl ether, diethylene glycol ether or the water;
Said multiple glue comprises following component by weight percentage:
Bakelite C, 15-70%
Phenolic resins D, 15-70%
Efficient levelling agent, 0.1-3%
Filler, 5-60%
Coupling agent, 0.1-1.0%
Pigment, 1-5%
Diluent 0.1-10%;
Said bakelite C is low viscous water-soluble resol, and its index is following: solid content 72-75%, and viscosity 400-800cps/25 ℃, pH is 7.5-8.5/25 ℃, gel time 8-12min/130 ℃; Said phenolic resins D is full-bodied water-soluble resol, and its index is following: solid content 72-75%, and viscosity 1500-3000cps/25 ℃, pH is 7.5-8.5/25 ℃, gel time 8-10min/130 ℃; Said efficient levelling agent is at least a in organic silicon modified by polyether, alkyl-modified organosilicon, fluorin modified crylic acid ester polymer, alkyl diphenyl base oxide disulfonate, Span or the polyoxyethylene sorbitan fatty acid ester; Said filler is at least a in calcium carbonate, silicate, hexafluoro sodium aluminate, potassium fluoborate, sodium fluoborate, calcirm-fluoride, sodium fluoride, calcium stearate or the zinc stearate; Described coupling agent is at least a in silane coupler or the zirconium class coupling agent; Said pigment is at least a in iron oxide red, iron oxide yellow, iron oxide black, iron oxide brown, phthalocyanine blue or the phthalocyanine green; Said diluent is at least a in methyl alcohol, ethanol, acetone, ethyl acetate, ethylene glycol monoethyl ether, diethylene glycol ether or the water.
2. high-effect elastic composite abrasive sheet as claimed in claim 1 is characterized in that: also contain the anti-clogging coating, said anti-clogging coating is located in the multiple glue or outside multiple glue and applies one deck again; Said anti-clogging coating contains stearate and fluoride; Said stearate is zinc stearate or calcium stearate, and said fluoride is hexafluoro sodium aluminate, potassium fluoborate, sodium fluoborate, calcirm-fluoride or sodium fluoride.
3. according to claim 1 or claim 2 high-effect elastic composite abrasive sheet, it is characterized in that: said abrasive material is one or more in middle temperature calcined alumina, high-temperature calcination aluminium oxide, carborundum, fused alumina zirconia or the microcrystalline alumina.
4. according to claim 1 or claim 2 high-effect elastic composite abrasive sheet, it is characterized in that: it is 0.6mm, 0.8mm or 1.0mm that said vulcan fibre is carried on the back basic thickness.
5. method for preparing high-effect elastic composite abrasive sheet as claimed in claim 1 comprises the upper base glue process, plants the sand operation, upward glue process, back curing process, flexure band water conservancy project preface, cut operation, the anti-deformation process operation of vulcan fibre and storage operation again; It is characterized in that: adopt sand to curl in the curing process of said back, adopt sand to make the maintenance of sand face smooth after the said flexure band water conservancy project preface again towards crimped towards outer.
6. the method for the high-effect elastic composite abrasive sheet of preparation as claimed in claim 5 is characterized in that: adopt anti-deformation resin that vulcan fibre back of the body base is sprayed or coating processing, this spraying or coating processing operation are being carried out after the cut or before printing, are being accomplished; Said anti-deformation resin is solvent type polyurethane resin, waterborne polyurethane resin, epoxy resin, phenolic resins, amino resins or acrylic resin.
7. the preparation method of high-effect elastic composite abrasive sheet as claimed in claim 5 is characterized in that: in the said flexure band water conservancy project preface, only carry out 90 ° of unidirectional flexures, water amount≤20g/m 2
CN2010105076460A 2010-10-15 2010-10-15 High-performance elastic composite abrasive sheet and preparation method thereof CN101966694B (en)

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