CN109909895A - A kind of preparation method of multiple grinding piece - Google Patents
A kind of preparation method of multiple grinding piece Download PDFInfo
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Abstract
The present invention relates to a kind of preparation methods of multiple grinding piece, belong to grinding-material technical field.The present invention is using polyurethane-modified silicone resin as material, prepare multiple grinding piece, organic siliconresin is using silicon oxygen bond as main chain, also organic group is connected on silicon atom, when organosilicon is heated, the organic group connected on side chain and silicon atom can remove under the action of heat, form more stable more heat-resisting silicon oxygen bond, to assign multiple grinding piece excellent thermal stability, polyurethane molecular is using polyether polyol or polyester polyol as soft segment, soft segment structure is random to be crimped into place to form continuous phase region, using ammonia ester bond and urea bond as hard section, hard segment structure is arranged together to form hard segment domains, hard segment domains are scattered in one by one in continuous phase region, form the structure of " microphase-separated ", this is distinctive structure in polyurethane molecular, so that polyurethane has excellent wear-resisting property, the wearability of multiple grinding piece can be effectively improved.
Description
Technical field
The present invention relates to a kind of preparation methods of multiple grinding piece, belong to grinding-material technical field.
Background technique
Abrasive sheet refers to using ultraprecise coating technique, by selected micron or nanoscale abrasive micropowder (diamond, carbonization
Silicon, aluminium oxide, silica, cerium oxide etc.) with high performance adhesive it is evenly dispersed after, be coated on substrate surface, then through excessively high
Precision cuts technique and is process.Abrasive sheet is very extensive with field, such as optical communication field, micromotor field, hard disk neck
Domain etc..Such as the vulcan fibre emery disc that uses on the market, vulcan fibre emery disc are also known as vulcanized paper sanding discs, high speed grinding, abrasive disk at present, it be with
Vulcan fibre is substrate, using synthetic resin as a kind of plate-like coated abrasive tool made of binder.Its tensile strength is big, wearability extra-heavy,
It is mountable derusted on electronic or pneumatic electric angle grinder to metal and the various type faces of nonmetallic materials, deburring, coating removal,
Polishing welding seams are the ideal tools for being ground, polishing, polishing in Furniture manufacture and repair of machine work, are widely used in timber, family
Tool, shipbuilding, metallurgy, automobile, machinery, instrument, bridge and building trade.But existing abrasive sheet wears no resistance, service life
The drawbacks such as short are more and more obvious.Therefore, it needs to develop a kind of high-performance multiple grinding piece, deformation can be effectively prevented, anti-tensile is strong
Degree is big, and adhesive property is good, and grinding performance is strong, the sharp quick, long service life of the abrasive sheet produced.
The domestic emery disc used is generally red steel paper emery disc at present, i.e., base material is red steel paper, but red steel paper emery disc
When in use especially in the summer meeting moisture absorption, so that the emery disc toughness reduction of red steel paper eventually leads to emery disc cracking, thus very much
Producer is using the toughness for improving emery disc in the form of intermediate plus glass fiber mesh, as patent CN201420209Y proposes one
The new waterleaf paper for velcanized fiber of kind, mainly in one layer of strong fibrous layer made of cotton fiber of vulcan fibre surface even spread, so that body paper
Water imbibition it is strong, patent CN201276524Y proposes a kind of resin laminated board grinding sheet, mainly by be arranged tool be of five storeys
Epoxy resin fiberglass laminate on, the performances such as deformation, mechanical strength, impact strength, toughness are improved with this, but
It is that this increased glass fiber mesh can generate many dusts in the grinding process, simultaneously because the increase of hardness is easy
The red steel paper to splash when polishing will cause the injury of staff.
In addition, people propose a specific solution for the problems in emery disc is corresponding, as CN201419364Y is mentioned
A kind of high strength steel cardboard is gone out, has had zinc chloride gelatinization layer mainly in vulcanized fiber board base, so that it uses the time more
Long, grinding effect is more preferably.CN101180159A is by effectively handling vulcan fibre backing, it will be apparent that improves vulcan fibre sand
The deformation condition of disk, while improving service life.CN200939582Y proposes a kind of enhancing silencing steel-paper sand disk, mainly
It is to improve aerodynamic profile by increasing well-regulated open-work and curved grooves on emery disc when being ground application, reach bright
The aobvious effect for reducing grinding noise.CN101235261A proposes a kind of preparation method of aerodux, uses this phenol
The vulcan fibre emery disc of aldehyde adhesive manufacture, significantly improves adhesive property, shear strength and moisture resistance energy.
Although above from different perspectives to vulcan fibre emery disc there are the problem of propose specific solution, vulcan fibre sand
Itself is a comprehensive problems for the use of disk, it is still necessary to which those skilled in the art continue research and development to play vulcan fibre emery disc
In the maximum use value of its application field.
Summary of the invention
The technical problems to be solved by the invention: wearing no resistance for existing abrasive sheet, and the short problem of service life mentions
A kind of preparation method of multiple grinding piece is supplied.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
(1) thermoplastic phenolic resin is added in polyurethane-modified silicone resin, with 150 ~ 200r/min stirring at 180 ~ 200 DEG C
45 ~ 60min obtains molten liquid；
(2) will vinyl trichlorosilane, ammonium polyphosphate, polyimide resin be added molten liquid in, be warming up to 300 ~ 350 DEG C and with
200 ~ 250r/min revolving speed is stirred 1 ~ 2h, and heat preservation obtains mixed melting liquid；
(3) p-hydroxybenzenyl sulfonate, ethylenediamine are added in mixed melting liquid, with 400 ~ 500r/min revolving speed at 300 ~ 350 DEG C
2 ~ 3h is stirred, 160 ~ 180 DEG C is cooled to, obtains adhesive；
(4) abrasive material is added in adhesive, 30 ~ 45min is stirred with 300 ~ 350r/min revolving speed at 160 ~ 180 DEG C, is obtained
Mixture is uniformly applied on polyester base material, room temperature cooling by mixture, is cut, is obtained multiple grinding piece.
The thermoplastic phenolic resin, polyurethane-modified silicone resin, vinyl trichlorosilane, ammonium polyphosphate, polyamides are sub-
Polyimide resin, ethylenediamine, p-hydroxybenzenyl sulfonate parts by weight be 10 ~ 20 parts of thermoplastic phenolic resins, 20 ~ 30 parts of polyurethane-modified silicon
Resin, 1 ~ 3 part of vinyl trichlorosilane, 1 ~ 3 part of ammonium polyphosphate, 10 ~ 20 parts of polyimide resins, 0.3 ~ 0.5 part of ethylenediamine, 5 ~
10 parts of p-hydroxybenzenyl sulfonates.
Mixture is on polyester base material described in step (4) with a thickness of 1.2 ~ 1.5mm.
The specific preparation step of polyurethane-modified silicone resin described in step (1) are as follows:
(1) by '-diphenylmethane diisocyanate be added dimethylformamide in, under room temperature with 150 ~ 200r/min revolving speed stirring 10 ~
20min obtains solution；
(2) polyester polyol is added in solution, 1.5 ~ 2.5h is stirred to react with 200 ~ 250r/min revolving speed at 65 ~ 75 DEG C,
Obtain reaction solution；
(3) gamma-aminopropyl-triethoxy-silane is slowly added dropwise into reaction solution, 5 ~ 10min of time for adding at normal temperature with
200 ~ 300r/min revolving speed is stirred to react 0.5 ~ 1h, obtains organosilicon end capping base polyurethane prepolymer for use as；
(4) by methyltriethoxysilane, dimethyl diethoxysilane, phenyltrimethoxysila,e, diphenyl dimethoxy
Silane mixture stirs 20 ~ 30min with 250 ~ 300r/min revolving speed under room temperature, obtains organosilicon mixed liquor；
(5) by organosilicon end capping base polyurethane prepolymer for use as, organosilicon mixed liquor be added deionized water in, under 65 ~ 75 DEG C of water-baths with
500 ~ 600r/min revolving speed is stirred to react 4 ~ 6h, then is placed in 30 ~ 40min of air-distillation at 80-90 DEG C, and hydrochloric acid is added, is depressurizing
Under the conditions of be warming up to 140 ~ 150 DEG C, keep the temperature 4 ~ 6h, obtain polyurethane-modified silicone resin.
The ester polyol, '-diphenylmethane diisocyanate, dimethylformamide, gamma-aminopropyl-triethoxy silicon
Alkane, methyltriethoxysilane, dimethyl diethoxysilane, phenyltrimethoxysila,e, dimethoxydiphenylsilane, salt
Sour, deionized water parts by weight are 20 ~ 30 parts of polyester polyol, 10 ~ 20 parts of '-diphenylmethane diisocyanates, 40 ~ 50 parts of diformazans
Base formamide, 10 ~ 30 parts of gamma-aminopropyl-triethoxy-silanes, 20 ~ 30 parts of methyltriethoxysilane, 20 ~ 30 parts of dimethyl
Diethoxy silane, 5 ~ 10 parts of phenyltrimethoxysila,es, 10 ~ 20 parts of dimethoxydiphenylsilanes, 1 ~ 3 part of mass concentration
10% hydrochloric acid, 10 ~ 20 parts of deionized waters.
The specific preparation step of abrasive material described in step (3) are as follows:
By alumina ceramic powder, silicon carbide powder, silicon-dioxide powdery, diamond powder, Zirconium powder, magnesia powder
It is placed under blender under body, cubic boron nitride powder room temperature and 1.5 ~ 2h is stirred with 300 ~ 400r/min revolving speed, obtain abrasive material.
The alumina ceramic powder, silicon carbide powder, silicon-dioxide powdery, diamond powder, Zirconium powder, oxygen
Change magnesium powder body, cubic boron nitride powder parts by weight be 50 ~ 60 parts of alumina ceramic powders, 20 ~ 30 parts of silicon carbide powders, 10 ~
15 parts of silicon-dioxide powderies, 5 ~ 10 parts of diamond powders, 1 ~ 3 part of Zirconium powder, 1 ~ 3 part of magnesium oxide powder, 5 ~ 10 parts cubes
Boron nitride powder.
The alumina ceramic powder average grain diameter is 8 ~ 12nm, silicon carbide powder average grain diameter is 12 ~ 15nm, dioxy
SiClx powder average grain diameter is 10 ~ 12nm, diamond diameter of particle is 0.1 ~ 0.3 μm, Zirconium powder average grain diameter be 8 ~
10nm, magnesium oxide powder average grain diameter are 10 ~ 12nm, cubic boron nitride powder average grain diameter is 0.3 ~ 0.6 μm.
The specific preparation step of the alumina ceramic powder are as follows:
(1) hydrazine aluminum sulfate is added in deionized water, 10 ~ 15min is stirred with 100 ~ 150r/min revolving speed under room temperature, obtains sulfuric acid
Aluminum solutions；
(2) by polyvinyl alcohol be added aluminum sulfate solution in, under 85 ~ 95 DEG C of water-baths with 200 ~ 300r/min revolving speed stirring 30 ~
40min, heat preservation, obtains mixed solution；
(3) urea is slowly added in mixed solution, and 1 ~ 2h is stirred with 300 ~ 400r/min revolving speed under 85 ~ 95 DEG C of water-baths,
Obtain dispersion liquid；
(4) dispersion liquid is placed in a centrifuge and 5 ~ 10min is centrifugated with 4000 ~ 5000r/min revolving speed, taken lower layer's solid, go
Ion water washing 3 ~ 5 times, it is placed at 120 ~ 160 DEG C dry 1 ~ 2h, obtains presoma；
(5) presoma is placed in 1 ~ 2h of calcining at 1200 ~ 1300 DEG C, obtains alumina ceramic powder.
It is described close aluminum sulfate, urea, polyvinyl alcohol, deionized water parts by weight be 40 ~ 50 parts of hydrazine aluminum sulfates, 10 ~
20 parts of urea, 1 ~ 3 part of polyvinyl alcohol, 60 ~ 80 parts of deionized waters.
The present invention is compared with other methods, and advantageous effects are:
(1) present invention prepares multiple grinding piece, alumina ceramic powder using alumina ceramic powder, silicon carbide powder as raw material
Hardness it is high, hardness is only second to diamond, and chemical property is stablized, and toughness is big, and wearability is strong, particle is sharp and cheap, fits
The high metal of processing tensile strength is closed, silicon carbide powder hardness is high, and brittleness is big, and abrasive grain is sharp, and thermal conductivity is preferable, and wearability is strong,
It is suitble to processing hard crisp metal and non-metallic products that can effectively improve multiple grinding piece using the two as the primary raw material of abrasive material
Wearability.
The present invention prepares multiple grinding piece, diamond chemical property is steady by addition diamond powder and boron carbide powder
It is fixed, there is acid resistance and alkali resistance, it is substance most hard in nature that diamond, which is a kind of mineral being made of carbon,
Diamond belongs to the simple substance of carbon, with superhard, wear-resisting, temperature-sensitive, heat conduction, semiconductor and thoroughly far excellent physical property, in gold
In hard rock crystal, carbon atom is interconnected by tetrahedron bonding mode, forms unlimited three-dimensional framework, is that typical atom is brilliant
Body.Each carbon atom forms covalent bond with SP3 hybridized orbit and other 4 carbon atoms, constitutes positive tetrahedron.Due in diamond
C-C key it is very strong, so all valence electrons have been involved in the formation of covalent bond, without free electron, so diamond is not only hard
Degree is big, and fusing point is high, and non-conductive, diamond can Pattern In Grinding Cemented Carbide, optical glass, ceramics and adjective stone etc. it is hard crisp
Material, for cubic boron nitride crystal structure similar to diamond, hardness is slightly below diamond, cubic boron nitride be by hexagonal boron nitride and
What catalyst synthesized at high temperature under high pressure, it has very high hardness, thermal stability and chemical inertness and good infrared shape
It is only second to diamond with excellent properties, its hardness such as wider forbidden bandwidths, thermal stability is higher than diamond, to Ferrious material
Member is known as biggish chemical stability, and the grinding performance of cubic boron nitride is very excellent, can not only be competent at the processing of difficult grind material,
Improve productivity, moreover it is possible to effectively improve the grinding quality of workpiece, cubic boron nitride powder can bear 1300 DEG C ~ 1400 DEG C of height
Temperature, big to iron family element chemical inertness, thermal conductivity is good, and resection rate when grinding steel material is high, and grinding ratio is big, and wearability is good, is grinding
The best abrasive material of the big metal of the high rigidity toughness such as hardened steel, high-speed steel, high strength steel, stainless steel and heat-resisting alloy, and be applicable in
In superhigh speed grinding.
The present invention prepares multiple grinding piece, organic siliconresin is based on silicon oxygen bond using polyurethane-modified silicone resin as material
Chain also connects organic group on silicon atom, and when organosilicon is heated, the organic group connected on side chain and silicon atom can be in warm
Under the action of remove, form more stable more heat-resisting silicon oxygen bond, to assign multiple grinding piece excellent thermal stability, gather
Using polyether polyol or polyester polyol as soft segment, soft segment structure is random to be crimped into place to be formed continuously urethane molecule
Phase region, using ammonia ester bond and urea bond as hard section, hard segment structure is arranged together to form hard segment domains, and hard segment domains are scattered in one by one
In continuous phase region, the structure of " microphase-separated " is formed, this is distinctive structure in polyurethane molecular, so that polyurethane is with excellent
Wear-resisting property, the wearability of multiple grinding piece can be effectively improved.
Specific embodiment
According to parts by weight, respectively weigh 40 ~ 50 parts of hydrazine aluminum sulfates, 10 ~ 20 parts of urea, 1 ~ 3 part of polyvinyl alcohol, 60 ~
Hydrazine aluminum sulfate is added in deionized water 80 parts of deionized waters, stirs 10 ~ 15min under room temperature with 100 ~ 150r/min revolving speed,
Aluminum sulfate solution is obtained, polyvinyl alcohol is added in aluminum sulfate solution, with the stirring of 200 ~ 300r/min revolving speed under 85 ~ 95 DEG C of water-baths
30 ~ 40min, heat preservation, obtains mixed solution, urea is slowly added in mixed solution, and under 85 ~ 95 DEG C of water-baths with 300 ~
400r/min revolving speed stirs 1 ~ 2h, obtains dispersion liquid, and dispersion liquid is placed in a centrifuge with the centrifugation point of 4000 ~ 5000r/min revolving speed
From 5 ~ 10min, take lower layer's solid, deionized water is washed 3 ~ 5 times, be placed at 120 ~ 160 DEG C dry 1 ~ 2h, obtain presoma, will before
It drives body and is placed in 1 ~ 2h of calcining at 1200 ~ 1300 DEG C, obtain alumina ceramic powder, then according to parts by weight, weigh 50 ~ 60 parts respectively
Alumina ceramic powder, 20 ~ 30 parts of silicon carbide powders, 10 ~ 15 parts of silicon-dioxide powderies, 5 ~ 10 parts of diamond powders, 1 ~ 3 part of oxygen
Change zirconium powder body, 1 ~ 3 part of magnesium oxide powder, 5 ~ 10 parts of cubic boron nitride powders, by alumina ceramic powder, silicon carbide powder, two
It is placed under blender under silica powder, diamond powder, Zirconium powder, magnesium oxide powder, cubic boron nitride powder room temperature
With 300 ~ 400r/min revolving speed stir 1.5 ~ 2h, obtain abrasive material, then according to parts by weight, respectively weigh 20 ~ 30 parts of polyester polyol,
10 ~ 20 parts of '-diphenylmethane diisocyanates, 40 ~ 50 parts of dimethylformamides, 10 ~ 30 parts of gamma-aminopropyl-triethoxy-silanes,
20 ~ 30 parts of methyltriethoxysilane, 20 ~ 30 parts of dimethyl diethoxysilanes, 5 ~ 10 parts of phenyltrimethoxysila,es, 10 ~
20 parts of dimethoxydiphenylsilanes, the hydrochloric acid of 1 ~ 3 part of mass concentration 10%, 10 ~ 20 parts of deionized waters, diphenyl-methane two is different
Cyanate is added in dimethylformamide, stirs 10 ~ 20min under room temperature with 150 ~ 200r/min revolving speed, obtains solution, and polyester is more
First alcohol is added in solution, is stirred to react 1.5 ~ 2.5h at 65 ~ 75 DEG C with 200 ~ 250r/min revolving speed, obtains reaction solution, by γ-
Aminopropyl triethoxysilane is slowly added dropwise into reaction solution, and 5 ~ 10min of time for adding is turned at normal temperature with 200 ~ 300r/min
Speed is stirred to react 0.5 ~ 1h, obtains organosilicon end capping base polyurethane prepolymer for use as, by methyltriethoxysilane, dimethyl diethoxy silicon
Alkane, phenyltrimethoxysila,e, dimethoxydiphenylsilane mixing, under room temperature with 250 ~ 300r/min revolving speed stirring 20 ~
30min obtains organosilicon mixed liquor, organosilicon end capping base polyurethane prepolymer for use as, organosilicon mixed liquor is added in deionized water, 65
4 ~ 6h is stirred to react with 500 ~ 600r/min revolving speed under ~ 75 DEG C of water-baths, then is placed in 30 ~ 40min of air-distillation at 80 ~ 90 DEG C, is added
Enter hydrochloric acid, be warming up to 140 ~ 150 DEG C at reduced pressure conditions, keeps the temperature 4 ~ 6h, obtain polyurethane-modified silicone resin, then in parts by weight
Meter, respectively weigh 10 ~ 20 parts of thermoplastic phenolic resins, 10 ~ 20 parts of polyimide resins, 20 ~ 30 parts of polyurethane-modified silicone resin,
1 ~ 3 part of vinyl trichlorosilane, 1 ~ 3 part of ammonium polyphosphate, 0.3 ~ 0.5 part of ethylenediamine, 5 ~ 10 parts of p-hydroxybenzenyl sulfonates, 70 ~ 80 parts
Thermoplastic phenolic resin is added in organic silicon modified polyurethane resin, is stirred at 180 ~ 200 DEG C with 150 ~ 200r/min by abrasive material
45 ~ 60min is mixed, molten liquid is obtained, vinyl trichlorosilane, ammonium polyphosphate, polyimide resin are added in molten liquid, are warming up to
300 ~ 350 DEG C and 1 ~ 2h is stirred with 200 ~ 250r/min revolving speed, keeps the temperature, mixed melting liquid is obtained, by p-hydroxybenzenyl sulfonate, second
Diamines is added in mixed melting liquid, stirs 2 ~ 3h at 300 ~ 350 DEG C with 400 ~ 500r/min revolving speed, is cooled to 160 ~ 180 DEG C,
Adhesive is obtained, abrasive material is added in adhesive, 30 ~ 45min is stirred with 300 ~ 350r/min revolving speed at 160 ~ 180 DEG C,
Mixture is obtained, mixture is uniformly applied on polyester base material, mixture cuts, obtains with a thickness of 1.2 ~ 1.5mm, room temperature cooling
Multiple grinding piece.
According to parts by weight, 40 parts of hydrazine aluminum sulfates, 10 parts of urea, 1 part of polyvinyl alcohol, 60 parts of deionizations are weighed respectively
Hydrazine aluminum sulfate is added in deionized water water, stirs 10min under room temperature with 100r/min revolving speed, obtains aluminum sulfate solution, will gather
Vinyl alcohol is added in aluminum sulfate solution, stirs 30min under 85 DEG C of water-baths with 200r/min revolving speed, and heat preservation obtains mixed solution, will
Urea is slowly added in mixed solution, and stirs 1h under 85 DEG C of water-baths with 300r/min revolving speed, obtains dispersion liquid, dispersion liquid is set
5min is centrifugated with 4000r/min revolving speed in centrifuge, takes lower layer's solid, deionized water is washed 3 times, is placed at 120 DEG C
Dry 1h, obtains presoma, presoma is placed at 1200 DEG C and calcines 1h, obtains alumina ceramic powder, then according to parts by weight, point
Also known as amount 50 parts of alumina ceramic powders, 20 parts of silicon carbide powders, 10 parts of silicon-dioxide powderies, 5 parts of diamond powders, 1 part of oxygen
Change zirconium powder body, 1 part of magnesium oxide powder, 5 parts of cubic boron nitride powders, by alumina ceramic powder, silicon carbide powder, silica
It is placed under blender under powder, diamond powder, Zirconium powder, magnesium oxide powder, cubic boron nitride powder room temperature with 300r/
Min revolving speed stirs 1.5h, obtains abrasive material, then according to parts by weight, and it is different to weigh 20 parts of polyester polyol, 10 parts of diphenyl-methanes two respectively
Cyanate, 40 parts of dimethylformamides, 10 parts of gamma-aminopropyl-triethoxy-silanes, 20 parts of methyltriethoxysilane, 20 parts
Dimethyl diethoxysilane, 5 parts of phenyltrimethoxysila,es, 10 parts of dimethoxydiphenylsilanes, 1 part of mass concentration 10%
Hydrochloric acid, 10 parts of deionized waters, by '-diphenylmethane diisocyanate be added dimethylformamide in, under room temperature with 150r/min turn
Speed stirring 10min, obtains solution, polyester polyol is added in solution, is stirred to react 1.5h at 65 DEG C with 200r/min revolving speed,
Reaction solution, gamma-aminopropyl-triethoxy-silane is slowly added dropwise into reaction solution, time for adding 5min at normal temperature with
200r/min revolving speed is stirred to react 0.5h, obtains organosilicon end capping base polyurethane prepolymer for use as, by methyltriethoxysilane, dimethyl two
Ethoxysilane, phenyltrimethoxysila,e, dimethoxydiphenylsilane mix, with the stirring of 250r/min revolving speed under room temperature
20min obtains organosilicon mixed liquor, organosilicon end capping base polyurethane prepolymer for use as, organosilicon mixed liquor is added in deionized water, 65
4h is stirred to react with 500r/min revolving speed under DEG C water-bath, then is placed in air-distillation 30min at 80 DEG C, hydrochloric acid is added, in decompression item
It is warming up to 140 DEG C under part, keeps the temperature 4h, obtains polyurethane-modified silicone resin, then according to parts by weight, weighs 10 parts of thermoplasticity phenol respectively
Urea formaldehyde, 10 parts of polyimide resins, 20 parts of polyurethane-modified silicone resin, 1 part of vinyl trichlorosilane, 1 part of ammonium polyphosphate,
0.3 part of ethylenediamine, 5 parts of p-hydroxybenzenyl sulfonates, 70 parts of abrasive materials, are added organic silicon modified polyurethane resin for thermoplastic phenolic resin
In, 45min is stirred with 150r/min at 180 DEG C, molten liquid is obtained, by vinyl trichlorosilane, ammonium polyphosphate, polyimides tree
Rouge is added in molten liquid, is warming up to 300 DEG C and is stirred 1h with 200r/min revolving speed, keeps the temperature, obtains mixed melting liquid, will be to hydroxyl
Base benzene sulfonic acid, ethylenediamine are added in mixed melting liquid, stir 2h at 300 DEG C with 400r/min revolving speed, are cooled to 160 DEG C, obtain
Abrasive material is added in adhesive, is stirred 30min at 160 DEG C with 300r/min revolving speed, obtains mixture, will mix by adhesive
It closes material to be uniformly applied on polyester base material, mixture cuts with a thickness of 1.2mm, room temperature cooling, obtains multiple grinding piece.
According to parts by weight, 45 parts of hydrazine aluminum sulfates, 15 parts of urea, 2 parts of polyvinyl alcohol, 70 parts of deionizations are weighed respectively
Hydrazine aluminum sulfate is added in deionized water water, stirs 13min under room temperature with 125r/min revolving speed, obtains aluminum sulfate solution, will gather
Vinyl alcohol is added in aluminum sulfate solution, stirs 35min under 90 DEG C of water-baths with 250r/min revolving speed, and heat preservation obtains mixed solution, will
Urea is slowly added in mixed solution, and stirs 1.5h under 90 DEG C of water-baths with 350r/min revolving speed, dispersion liquid is obtained, by dispersion liquid
It is placed in a centrifuge and 7min is centrifugated with 4500r/min revolving speed, take lower layer's solid, deionized water is washed 4 times, is placed in 140 DEG C
Lower dry 1.5h, obtains presoma, and presoma is placed at 1250 DEG C and calcines 1.5h, obtains alumina ceramic powder, then by weight
Number meter, weighs 55 parts of alumina ceramic powders, 25 parts of silicon carbide powders, 13 parts of silicon-dioxide powderies, 7 parts of bortz powders respectively
Body, 2 parts of Zirconium powders, 2 parts of magnesium oxide powders, 7 parts of cubic boron nitride powders, by alumina ceramic powder, silicon carbide powder,
Blender is placed under silicon-dioxide powdery, diamond powder, Zirconium powder, magnesium oxide powder, cubic boron nitride powder room temperature
Under with 350r/min revolving speed stir 1.7h, obtain abrasive material, then according to parts by weight, respectively weigh 25 parts of polyester polyol, 15 part two
Phenylmethane diisocyanate, 45 parts of dimethylformamides, 20 parts of gamma-aminopropyl-triethoxy-silanes, 25 parts of methyl triethoxies
Silane, 25 parts of dimethyl diethoxysilanes, 7 parts of phenyltrimethoxysila,es, 15 parts of dimethoxydiphenylsilanes, 2 parts of matter
Measure the hydrochloric acid of concentration 10%, 15 parts of deionized waters, '-diphenylmethane diisocyanate be added in dimethylformamide, under room temperature with
175r/min revolving speed stirs 15min, obtains solution, and polyester polyol is added in solution, is stirred at 70 DEG C with 225r/min revolving speed
Reaction 2.0h is mixed, reaction solution is obtained, gamma-aminopropyl-triethoxy-silane is slowly added dropwise into reaction solution, time for adding 7min exists
0.7h is stirred to react with 250r/min revolving speed under room temperature, obtains organosilicon end capping base polyurethane prepolymer for use as, by methyltriethoxysilane,
Dimethyl diethoxysilane, phenyltrimethoxysila,e, dimethoxydiphenylsilane mix, and are turned under room temperature with 275r/min
Speed stirring 25min, obtains organosilicon mixed liquor, and deionized water is added in organosilicon end capping base polyurethane prepolymer for use as, organosilicon mixed liquor
In, 5h is stirred to react with 550r/min revolving speed under 70 DEG C of water-baths, then be placed in air-distillation 35min at 85 DEG C, hydrochloric acid is added,
It is warming up to 145 DEG C under reduced pressure, keeps the temperature 5h, obtains polyurethane-modified silicone resin, then according to parts by weight, weighs 15 parts of heat respectively
Plastic phenolic resin, 15 parts of polyimide resins, 25 parts of polyurethane-modified silicone resin, 2 parts of vinyl trichlorosilanes, 2 parts of poly- phosphorus
Organic-silicon-modified poly- ammonia is added in thermoplastic phenolic resin by sour ammonium, 0.4 part of ethylenediamine, 7 parts of p-hydroxybenzenyl sulfonates, 75 parts of abrasive materials
In ester resin, 52min is stirred with 175r/min at 190 DEG C, molten liquid is obtained, by vinyl trichlorosilane, ammonium polyphosphate, polyamides
Imide resin is added in molten liquid, is warming up to 325 DEG C and is stirred 1.5h with 225r/min revolving speed, keeps the temperature, obtains mixed melting
P-hydroxybenzenyl sulfonate, ethylenediamine are added in mixed melting liquid liquid, stir 2.5h, cooling at 325 DEG C with 450r/min revolving speed
To 170 DEG C, adhesive is obtained, abrasive material is added in adhesive, 37min is stirred with 325r/min revolving speed at 170 DEG C, is obtained mixed
Material is closed, mixture is uniformly applied on polyester base material, mixture cuts with a thickness of 1.3mm, room temperature cooling, obtains multiple grinding
Piece.
According to parts by weight, 50 parts of hydrazine aluminum sulfates, 20 parts of urea, 3 parts of polyvinyl alcohol, 80 parts of deionizations are weighed respectively
Hydrazine aluminum sulfate is added in deionized water water, stirs 15min under room temperature with 150r/min revolving speed, obtains aluminum sulfate solution, will gather
Vinyl alcohol is added in aluminum sulfate solution, stirs 40min under 95 DEG C of water-baths with 300r/min revolving speed, and heat preservation obtains mixed solution, will
Urea is slowly added in mixed solution, and stirs 2h under 95 DEG C of water-baths with 400r/min revolving speed, obtains dispersion liquid, dispersion liquid is set
10min is centrifugated with 5000r/min revolving speed in centrifuge, takes lower layer's solid, deionized water is washed 5 times, is placed at 160 DEG C
Dry 2h, obtains presoma, presoma is placed at 1300 DEG C and calcines 2h, obtains alumina ceramic powder, then according to parts by weight, point
Also known as amount 60 parts of alumina ceramic powders, 30 parts of silicon carbide powders, 15 parts of silicon-dioxide powderies, 10 parts of diamond powders, 3 parts of oxygen
Change zirconium powder body, 3 parts of magnesium oxide powders, 10 parts of cubic boron nitride powders, by alumina ceramic powder, silicon carbide powder, titanium dioxide
Be placed under blender under silicon powder, diamond powder, Zirconium powder, magnesium oxide powder, cubic boron nitride powder room temperature with
400r/min revolving speed stirs 2h, obtains abrasive material, then according to parts by weight, weighs 30 parts of polyester polyol, 20 parts of diphenyl-methanes respectively
Diisocyanate, 50 parts of dimethylformamides, 30 parts of gamma-aminopropyl-triethoxy-silanes, 30 parts of methyltriethoxysilane,
30 parts of dimethyl diethoxysilanes, 10 parts of phenyltrimethoxysila,es, 20 parts of dimethoxydiphenylsilanes, 3 parts of quality are dense
The hydrochloric acid of degree 10%, 20 parts of deionized waters '-diphenylmethane diisocyanate are added in dimethylformamide, with 200r/ under room temperature
Min revolving speed stirs 20min, obtains solution, and polyester polyol is added in solution, is stirred to react at 75 DEG C with 250r/min revolving speed
2.5h obtains reaction solution, and gamma-aminopropyl-triethoxy-silane is slowly added dropwise into reaction solution, and time for adding 10min is in room temperature
Under 1h is stirred to react with 300r/min revolving speed, organosilicon end capping base polyurethane prepolymer for use as is obtained, by methyltriethoxysilane, dimethyl
Diethoxy silane, phenyltrimethoxysila,e, dimethoxydiphenylsilane mix, with the stirring of 300r/min revolving speed under room temperature
30min obtains organosilicon mixed liquor, organosilicon end capping base polyurethane prepolymer for use as, organosilicon mixed liquor is added in deionized water, 75
6h is stirred to react with 600r/min revolving speed under DEG C water-bath, then is placed in air-distillation 40min at 90 DEG C, hydrochloric acid is added, in decompression item
It is warming up to 150 DEG C under part, keeps the temperature 6h, obtains polyurethane-modified silicone resin, then according to parts by weight, weighs 20 parts of thermoplasticity phenol respectively
Urea formaldehyde, 20 parts of polyimide resins, 30 parts of polyurethane-modified silicone resin, 3 parts of vinyl trichlorosilanes, 3 parts of ammonium polyphosphate,
Organic silicon modified polyurethane tree is added in thermoplastic phenolic resin by 0.5 part of ethylenediamine, 10 parts of p-hydroxybenzenyl sulfonates, 80 parts of abrasive materials
In rouge, 60min is stirred with 200r/min at 200 DEG C, molten liquid is obtained, by vinyl trichlorosilane, ammonium polyphosphate, polyimides
Resin is added in molten liquid, is warming up to 350 DEG C and is stirred 2h with 250r/min revolving speed, keeps the temperature, obtains mixed melting liquid, will be right
Hydroxy benzene sulfonic acid, ethylenediamine are added in mixed melting liquid, stir 3h at 350 DEG C with 500r/min revolving speed, are cooled to 180 DEG C,
Adhesive is obtained, abrasive material is added in adhesive, 45min is stirred with 350r/min revolving speed at 180 DEG C, obtains mixture, it will
Mixture is uniformly applied on polyester base material, and mixture cuts with a thickness of 1.5mm, room temperature cooling, obtains multiple grinding piece.
Multiple grinding piece prepared by the present invention and commercially available abrasive sheet are detected, specific testing result such as following table table 1:
Detection method:
Installation Example 1~3 and the commercially available abrasive sheet of comparative example are distinguished using the angle sanding machine that revolution is 1000r/min or more, are used
No. 45 U-steels carry out strong pressure grinding test, and the performance and used life of more various abrasive sheets grinds piece performance knockout
Than indicating, is defined as:
Knockout ratio=grinding steel material/abrasive sheet knockout amount
Service life is made relatively with the accumulative polishing time；
1 multiple grinding piece performance of table characterization
Multiple grinding piece prepared by the present invention as shown in Table 1, wear-resisting property is good, long service life, has extremely wide market
Prospect and application value.
Claims (10)
1. a kind of preparation method of multiple grinding piece, which is characterized in that specific preparation step are as follows:
(1) thermoplastic phenolic resin is added in polyurethane-modified silicone resin, with 150 ~ 200r/min stirring at 180 ~ 200 DEG C
45 ~ 60min obtains molten liquid；
(2) will vinyl trichlorosilane, ammonium polyphosphate, polyimide resin be added molten liquid in, be warming up to 300 ~ 350 DEG C and with
200 ~ 250r/min revolving speed is stirred 1 ~ 2h, and heat preservation obtains mixed melting liquid；
(3) p-hydroxybenzenyl sulfonate, ethylenediamine are added in mixed melting liquid, with 400 ~ 500r/min revolving speed at 300 ~ 350 DEG C
2 ~ 3h is stirred, 160 ~ 180 DEG C is cooled to, obtains adhesive；
(4) abrasive material is added in adhesive, 30 ~ 45min is stirred with 300 ~ 350r/min revolving speed at 160 ~ 180 DEG C, is obtained
Mixture is uniformly applied on polyester base material, room temperature cooling by mixture, is cut, is obtained multiple grinding piece.
2. a kind of preparation method of multiple grinding piece according to claim 1, which is characterized in that the thermoplastic phenolic
Resin, polyurethane-modified silicone resin, vinyl trichlorosilane, ammonium polyphosphate, polyimide resin, ethylenediamine, para hydroxybenzene sulphur
The parts by weight of acid are 10 ~ 20 parts of thermoplastic phenolic resins, 20 ~ 30 parts of polyurethane-modified silicone resin, 1 ~ 3 part of vinyl trichlorine silicon
Alkane, 1 ~ 3 part of ammonium polyphosphate, 10 ~ 20 parts of polyimide resins, 0.3 ~ 0.5 part of ethylenediamine, 5 ~ 10 parts of p-hydroxybenzenyl sulfonates.
3. a kind of preparation method of multiple grinding piece according to claim 1, which is characterized in that gather described in step (4)
Mixture is on ester group material with a thickness of 1.2 ~ 1.5mm.
4. a kind of preparation method of multiple grinding piece according to claim 1, which is characterized in that gather described in step (1)
The specific preparation step of urethane modified silicone resin are as follows:
(1) by '-diphenylmethane diisocyanate be added dimethylformamide in, under room temperature with 150 ~ 200r/min revolving speed stirring 10 ~
20min obtains solution；
(2) polyester polyol is added in solution, 1.5 ~ 2.5h is stirred to react with 200 ~ 250r/min revolving speed at 65 ~ 75 DEG C,
Obtain reaction solution；
(3) gamma-aminopropyl-triethoxy-silane is slowly added dropwise into reaction solution, 5 ~ 10min of time for adding at normal temperature with
200 ~ 300r/min revolving speed is stirred to react 0.5 ~ 1h, obtains organosilicon end capping base polyurethane prepolymer for use as；
(4) by methyltriethoxysilane, dimethyl diethoxysilane, phenyltrimethoxysila,e, diphenyl dimethoxy
Silane mixture stirs 20 ~ 30min with 250 ~ 300r/min revolving speed under room temperature, obtains organosilicon mixed liquor；
(5) by organosilicon end capping base polyurethane prepolymer for use as, organosilicon mixed liquor be added deionized water in, under 65 ~ 75 DEG C of water-baths with
500 ~ 600r/min revolving speed is stirred to react 4 ~ 6h, then is placed in 30 ~ 40min of air-distillation at 80-90 DEG C, and hydrochloric acid is added, is depressurizing
Under the conditions of be warming up to 140 ~ 150 DEG C, keep the temperature 4 ~ 6h, obtain polyurethane-modified silicone resin.
5. a kind of preparation method of multiple grinding piece according to claim 4, which is characterized in that the ester polyol,
'-diphenylmethane diisocyanate, dimethylformamide, gamma-aminopropyl-triethoxy-silane, methyltriethoxysilane, diformazan
Base diethoxy silane, phenyltrimethoxysila,e, dimethoxydiphenylsilane, hydrochloric acid, deionized water parts by weight be 20 ~
30 parts of polyester polyol, 10 ~ 20 parts of '-diphenylmethane diisocyanates, 40 ~ 50 parts of dimethylformamides, 10 ~ 30 parts of γ-ammonia third
Ethyl triethoxy silicane alkane, 20 ~ 30 parts of methyltriethoxysilane, 20 ~ 30 parts of dimethyl diethoxysilanes, 5 ~ 10 parts of phenyl three
Methoxy silane, 10 ~ 20 parts of dimethoxydiphenylsilanes, the hydrochloric acid of 1 ~ 3 part of mass concentration 10%, 10 ~ 20 parts of deionized waters.
6. a kind of preparation method of multiple grinding piece according to claim 1, which is characterized in that mill described in step (3)
Expect specific preparation step are as follows:
By alumina ceramic powder, silicon carbide powder, silicon-dioxide powdery, diamond powder, Zirconium powder, magnesia powder
It is placed under blender under body, cubic boron nitride powder room temperature and 1.5 ~ 2h is stirred with 300 ~ 400r/min revolving speed, obtain abrasive material.
7. a kind of preparation method of multiple grinding piece according to claim 6, which is characterized in that the aluminium oxide ceramics
Powder, silicon carbide powder, silicon-dioxide powdery, diamond powder, Zirconium powder, magnesium oxide powder, cubic boron nitride powder
Parts by weight be 50 ~ 60 parts of alumina ceramic powders, 20 ~ 30 parts of silicon carbide powders, 10 ~ 15 parts of silicon-dioxide powderies, 5 ~ 10 parts
Diamond powder, 1 ~ 3 part of Zirconium powder, 1 ~ 3 part of magnesium oxide powder, 5 ~ 10 parts of cubic boron nitride powders.
8. a kind of preparation method of multiple grinding piece according to claim 6, which is characterized in that the aluminium oxide ceramics
Powder average grain diameter is 8 ~ 12nm, silicon carbide powder average grain diameter is 12 ~ 15nm, silicon-dioxide powdery average grain diameter be 10 ~
12nm, diamond diameter of particle are 0.1 ~ 0.3 μm, Zirconium powder average grain diameter is 8 ~ 10nm, magnesium oxide powder average grain diameter
It is 0.3 ~ 0.6 μm for 10 ~ 12nm, cubic boron nitride powder average grain diameter.
9. a kind of preparation method of multiple grinding piece according to claim 6, which is characterized in that the aluminium oxide ceramics
The specific preparation step of powder are as follows:
(1) hydrazine aluminum sulfate is added in deionized water, 10 ~ 15min is stirred with 100 ~ 150r/min revolving speed under room temperature, obtains sulfuric acid
Aluminum solutions；
(2) by polyvinyl alcohol be added aluminum sulfate solution in, under 85 ~ 95 DEG C of water-baths with 200 ~ 300r/min revolving speed stirring 30 ~
40min, heat preservation, obtains mixed solution；
(3) urea is slowly added in mixed solution, and 1 ~ 2h is stirred with 300 ~ 400r/min revolving speed under 85 ~ 95 DEG C of water-baths,
Obtain dispersion liquid；
(4) dispersion liquid is placed in a centrifuge and 5 ~ 10min is centrifugated with 4000 ~ 5000r/min revolving speed, taken lower layer's solid, go
Ion water washing 3 ~ 5 times, it is placed at 120 ~ 160 DEG C dry 1 ~ 2h, obtains presoma；
(5) presoma is placed in 1 ~ 2h of calcining at 1200 ~ 1300 DEG C, obtains alumina ceramic powder.
10. a kind of preparation method of multiple grinding piece according to claim 9, which is characterized in that the conjunction aluminum sulfate,
Urea, polyvinyl alcohol, deionized water parts by weight be 40 ~ 50 parts of hydrazine aluminum sulfates, 10 ~ 20 parts of urea, 1 ~ 3 part of polyvinyl alcohol,
60 ~ 80 parts of deionized waters.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114434898A (en) * | 2022-02-11 | 2022-05-06 | 江苏欣鑫纺织科技有限公司 | Anti-melting metal heat insulation fabric and preparation method thereof |
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Application publication date: 20190621 |