CN108857935A - A kind of silicon rubber phenolic resin grinding wheel and preparation method thereof - Google Patents
A kind of silicon rubber phenolic resin grinding wheel and preparation method thereof Download PDFInfo
- Publication number
- CN108857935A CN108857935A CN201810535183.5A CN201810535183A CN108857935A CN 108857935 A CN108857935 A CN 108857935A CN 201810535183 A CN201810535183 A CN 201810535183A CN 108857935 A CN108857935 A CN 108857935A
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- China
- Prior art keywords
- parts
- phenolic resin
- grinding wheel
- silicon rubber
- modified
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
- B24D3/285—Reaction products obtained from aldehydes or ketones
-
- 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
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
Abstract
The invention discloses a kind of silicon rubber phenolic resin grinding wheels, it is made of the raw material of following weight parts：100-120 parts of silicon carbide, 50-70 parts of inorganic heat filling, 2-5 parts of di-iron trioxide, 5-7 parts of boric acid, 10-15 parts of polyvinyl alcohol, 15-20 parts of phenol, 10-20 parts of 35-40% formalin, 10-15 parts of liquid phenolic resin, 5-10 parts of organosilicon glue, 3-5 parts of quick lime.The present invention is modified phenol-formaldehyde resin modified grinding wheel using silicon rubber, reduces the brittleness and hardness of grinding wheel.
Description
Technical field
The invention belongs to finishing technical fields, and in particular to a kind of silicon rubber phenolic resin grinding wheel and its preparation side
Method.
Background technique
Resin wheel is to use benzoic acid and polyamide or other resins as binder, by by abrasive material and inorganic filler glue
A kind of tool made of conjunction has many advantages, such as that grinding force is small, grinding temperature is low, self-sharpening is good, grinding efficiency is high.Therefore, resin
Glued grinding wheel is a kind of biggish tool of demand, and this tool is just being effectively applied to various grinding operations, such as flat stone mill
It cuts, cylindrical centerless type grinding, fluting and internal grinding etc..The common resinoid bond of resin wheel be phenolic resin, epoxy resin,
Butadiene-styrene rubber and polytetrafluoroethylene (PTFE) etc., and it is epoxy resin, the heat resistance of butadiene-styrene rubber and polytetrafluoroethylene (PTFE), mechanical property, resistance to
It is weaker to grind performance, limits their applications in terms of friction material.Phenolic resin is in heat resistance, adhesive property and mechanical property
Energy etc. just has biggish advantage, has become the common bonding agent of resin wheel.But there are brittleness for pure phenolic resin
Greatly, the disadvantages such as poor toughness, hardness are high, intensity is low affect the frictional behaviour of phenolic resin grinding wheel, therefore carry out to phenolic resin
Modification is to improve the effective way of its comprehensive performance.
Summary of the invention
The purpose of the present invention is to provide a kind of silicon rubber phenolic resin grinding wheels and preparation method thereof, to solve above-mentioned background
The problem of being proposed in technology.
To achieve the above object, the present invention provides the following technical solutions：
A kind of silicon rubber phenolic resin grinding wheel, it is made of the raw material of following weight parts：
100-120 parts of silicon carbide, 50-70 parts of inorganic heat filling, 2-5 parts of di-iron trioxide, 5-7 parts of boric acid, polyvinyl alcohol 10-
15 parts, 15-20 parts of phenol, 10-20 parts of 35-40% formalin, 10-15 parts of liquid phenolic resin, 5-10 parts of organosilicon glue, it is raw
3-5 parts of lime.
A kind of preparation method of the silicon rubber phenolic resin grinding wheel, includes the following steps：
（1）It after above-mentioned phenol, 35-40% formalin are mixed, stirs evenly, the pH of mixed liquor is adjusted using sodium hydroxide
Boric acid is then added insulated and stirred 1-2 hours at 65-70 DEG C to 8-9, increases temperature to 100-110 DEG C, decompression dehydration is anti-
It answers 80-100 minutes, the dehydrated alcohol that polyvinyl alcohol and mixed system weight 5-7% is added first is cooled to 70- after mixing evenly
It 80 DEG C, reacts 10-12 hours, is then warming up to 100-110 DEG C of reaction 10-12 hours again, obtains phenol-formaldehyde resin modified after cooling；
（3）By above-mentioned phenol-formaldehyde resin modified grinding at fine powder, 100-150 mesh is crossed, modified phenolic resin cosmetics is obtained；
（4）Above-mentioned modified phenolic resin cosmetics is uniformly mixed at 30 DEG C with remaining each raw material, mould is added in molding mass after mixing
It is bulldozed in tool, cold moudling, obtains grinding wheel base；
（5）Grinding wheel base is separated with sheet iron plate and is stacked up, is sent into hardening furnace, the temperature requirement of hardening is with 2 DEG C/min
Speed be increased to 80 DEG C from room temperature；Then 10 DEG C of heat preservation 30min of every raising keep the temperature 2-3 hours when 110 DEG C of temperature arrival；
It is every to increase 10 DEG C of heat preservations 3 hours after 120 DEG C；When 170-185 DEG C of temperature arrival, 12-15 hours are kept the temperature；Stop after heating certainly
It is so cooling to get the silicon rubber phenolic resin grinding wheel.
Preferably, the viscosity of the organosilicon glue is 3000-4500cps.
Preferably, the organosilicon glue is vulcanization type organosilicon glue.
Compared with prior art, the beneficial effects of the invention are as follows：
（1）The phenyl ring that can will be keyed by C-C is modified to phenolic resin through boric acid and polyvinyl alcohol, partial replacement is served as reasons
B-C key connects, and polyvinyl alcohol can be keyed on modified phenolic resin by B-O, and polyvinyl alcohol can be with modified phenolic
Resin forms three-dimensional crosslinking structure, and wherein the bond energy of C-C is 347KJ/mol, and the bond energy of B-C is 393KJ/mol, the key of B-O
It can be 523KJ/mol, therefore be modified heat resistance, instantaneous heat-resisting quantity, ablation resistance, intensity and the punching that phenolic resin can be improved
Hit toughness；
（2）The inorganic heat filling of addition enables the heat generated in cutting process to propagate in time, will not be because of hot-spot
Lead to the damage of grinding wheel and product；
（3）Compared to phenolic resin, sulphurated siliastic has the advantages that high-temperature stability and elasticity is good, system mixed with phenolic resin
Make resin wheel, the brittleness and hardness of grinding wheel can be reduced；
（4）When grinding wheel in use, due to grinding heat aggregation, silicon rubber can be made to generate decomposed, when decomposition generates SO2It is toxic
Gas, quick lime, which is added, in grinding wheel can be absorbed SO2, and generate CaSO3CaSO with reproducibility3, and can prevent processing when
Product is by thermal oxide.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of creative work.
A kind of silicon rubber phenolic resin grinding wheel, it is made of the raw material of following weight parts：
110 parts of silicon carbide, 70 parts of inorganic heat filling, 5 parts of di-iron trioxide, 6 parts of boric acid, 12 parts of polyvinyl alcohol, 20 parts of phenol,
20 parts of 35-40% formalin, 15 parts of liquid phenolic resin, 8 parts of organosilicon glue, 3 parts of quick lime.
A kind of preparation method of the silicon rubber phenolic resin grinding wheel, includes the following steps：
（1）It after above-mentioned phenol, 35-40% formalin are mixed, stirs evenly, the pH of mixed liquor is adjusted using sodium hydroxide
To 9, then boric acid is added in insulated and stirred 2 hours at 70 DEG C, increases temperature to 110 DEG C, decompression dehydration reacts 100 minutes, adds
Enter the dehydrated alcohol of polyvinyl alcohol and mixed system weight 7%, after mixing evenly, be first cooled to 80 DEG C, react 12 hours, then
It is warming up to 110 DEG C again to react 12 hours, obtains phenol-formaldehyde resin modified after cooling；
（3）By above-mentioned phenol-formaldehyde resin modified grinding at fine powder, 150 meshes are crossed, modified phenolic resin cosmetics is obtained；
（4）Above-mentioned modified phenolic resin cosmetics is uniformly mixed at 30 DEG C with remaining each raw material, mould is added in molding mass after mixing
It is bulldozed in tool, cold moudling, obtains grinding wheel base；
（5）Grinding wheel base is separated with sheet iron plate and is stacked up, is sent into hardening furnace, the temperature requirement of hardening is with 2 DEG C/min
Speed be increased to 80 DEG C from room temperature；Then 10 DEG C of heat preservation 30min of every raising keep the temperature 2 hours when 110 DEG C of temperature arrival；120
It is every to increase 10 DEG C of heat preservations 3 hours after DEG C；When 180 DEG C of temperature arrival, 12 hours are kept the temperature；Stop heating after natural cooling to get
The silicon rubber phenolic resin grinding wheel.
Preferably, the viscosity of the organosilicon glue is 4000cps.
Preferably, the organosilicon glue is vulcanization type organosilicon glue.
The phenyl ring that can will be keyed by C-C is modified to phenolic resin through boric acid and polyvinyl alcohol, partial replacement is
It is connected by B-C key, polyvinyl alcohol can be keyed on modified phenolic resin by B-O, and polyvinyl alcohol can be with modified phenol
Urea formaldehyde forms three-dimensional crosslinking structure, and wherein the bond energy of C-C is 347KJ/mol, and the bond energy of B-C is 393KJ/mol, B-O's
Bond energy is 523KJ/mol, thus the modified heat resistance that phenolic resin can be improved, instantaneous heat-resisting quantity, ablation resistance, intensity and
Impact flexibility；The inorganic heat filling of addition enables the heat generated in cutting process to propagate in time, will not be because of local mistake
The damage of thermal conductivity cause grinding wheel and product；Compared to phenolic resin, sulphurated siliastic has the advantages that high-temperature stability and elasticity is good,
Production resin wheel mixed with phenolic resin, can reduce the brittleness and hardness of grinding wheel；When grinding wheel in use, if due to grinding heat
Aggregation, silicon rubber can be made to generate decomposed, when decomposition generates SO2Toxic gas, quick lime, which is added, in grinding wheel to inhale
Receive SO2, and generate CaSO3CaSO with reproducibility3, and can prevent processing when product by thermal oxide.
Performance test：
Thermal decomposition temperature：≥437℃；
Revolving strength 148m/s
Abrasion test：It is with identical weight, the commercially available phenolic resin grinding wheel of same size and grinding wheel of the invention, weight
1kg continuously cuts channel steel in the same way respectively, and the grinding wheel weight after commercially available phenolic resin emery wheel cuts is 973g, this
Weight after the emery wheel cuts of invention is 979g, wears away small, durability height.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that：It still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (4)
1. a kind of silicon rubber phenolic resin grinding wheel, it is characterised in that it is made of the raw material of following weight parts：
100-120 parts of silicon carbide, 50-70 parts of inorganic heat filling, 2-5 parts of di-iron trioxide, 5-7 parts of boric acid, polyvinyl alcohol 10-
15 parts, 15-20 parts of phenol, 10-20 parts of 35-40% formalin, 10-15 parts of liquid phenolic resin, 5-10 parts of organosilicon glue, it is raw
3-5 parts of lime.
2. a kind of preparation method of silicon rubber phenolic resin grinding wheel as described in claim 1, it is characterised in that including following step
Suddenly：
（1）It after above-mentioned phenol, 35-40% formalin are mixed, stirs evenly, the pH of mixed liquor is adjusted using sodium hydroxide
Boric acid is then added insulated and stirred 1-2 hours at 65-70 DEG C to 8-9, increases temperature to 100-110 DEG C, decompression dehydration is anti-
It answers 80-100 minutes, the dehydrated alcohol that polyvinyl alcohol and mixed system weight 5-7% is added first is cooled to 70- after mixing evenly
It 80 DEG C, reacts 10-12 hours, is then warming up to 100-110 DEG C of reaction 10-12 hours again, obtains phenol-formaldehyde resin modified after cooling；
（3）By above-mentioned phenol-formaldehyde resin modified grinding at fine powder, 100-150 mesh is crossed, modified phenolic resin cosmetics is obtained；
（4）Above-mentioned modified phenolic resin cosmetics is uniformly mixed at 30 DEG C with remaining each raw material, mould is added in molding mass after mixing
It is bulldozed in tool, cold moudling, obtains grinding wheel base；
（5）Grinding wheel base is separated with sheet iron plate and is stacked up, is sent into hardening furnace, the temperature requirement of hardening is with 2 DEG C/min
Speed be increased to 80 DEG C from room temperature；Then 10 DEG C of heat preservation 30min of every raising keep the temperature 2-3 hours when 110 DEG C of temperature arrival；
It is every to increase 10 DEG C of heat preservations 3 hours after 120 DEG C；When 170-185 DEG C of temperature arrival, 12-15 hours are kept the temperature；Stop after heating certainly
It is so cooling to get the silicon rubber phenolic resin grinding wheel.
3. modified silicon rubber phenolic resin grinding wheel according to claim 1, it is characterised in that：The organosilicon glue
Viscosity is 3000-4500cps.
4. modified silicon rubber phenolic resin grinding wheel according to claim 1, it is characterised in that：The organosilicon glue is
Vulcanization type organosilicon glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810535183.5A CN108857935A (en) | 2018-05-30 | 2018-05-30 | A kind of silicon rubber phenolic resin grinding wheel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810535183.5A CN108857935A (en) | 2018-05-30 | 2018-05-30 | A kind of silicon rubber phenolic resin grinding wheel and preparation method thereof |
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| Publication Number | Publication Date |
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| CN108857935A true CN108857935A (en) | 2018-11-23 |
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| CN201810535183.5A Pending CN108857935A (en) | 2018-05-30 | 2018-05-30 | A kind of silicon rubber phenolic resin grinding wheel and preparation method thereof |
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Citations (8)
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|---|---|---|---|---|
| EP2295496A1 (en) * | 2005-06-29 | 2011-03-16 | Saint-Gobain Abrasives, Inc. | High performance resin for abrasive products |
| CN102343560A (en) * | 2011-10-20 | 2012-02-08 | 宁波大华砂轮有限公司 | Resin grinding wheel and manufacturing method thereof |
| CN105234839A (en) * | 2015-10-09 | 2016-01-13 | 芜湖市鸿坤汽车零部件有限公司 | Resin grinding wheel and preparation method thereof |
| CN105294964A (en) * | 2015-10-10 | 2016-02-03 | 薛典荣 | Zinc oxide coated CBN (cubic boron nitride) grinding material resin grinding wheel and preparation method of zinc oxide coated CBN grinding material resin grinding wheel |
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| CN107629181A (en) * | 2017-10-30 | 2018-01-26 | 湖南金泰检测检验有限公司 | Phenol-formaldehyde resin modified, modified phenolic resin grease article and its preparation method and application |
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2018
- 2018-05-30 CN CN201810535183.5A patent/CN108857935A/en active Pending
Patent Citations (8)
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|---|---|---|---|---|
| EP2295496A1 (en) * | 2005-06-29 | 2011-03-16 | Saint-Gobain Abrasives, Inc. | High performance resin for abrasive products |
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| CN105234839A (en) * | 2015-10-09 | 2016-01-13 | 芜湖市鸿坤汽车零部件有限公司 | Resin grinding wheel and preparation method thereof |
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| CN105294964A (en) * | 2015-10-10 | 2016-02-03 | 薛典荣 | Zinc oxide coated CBN (cubic boron nitride) grinding material resin grinding wheel and preparation method of zinc oxide coated CBN grinding material resin grinding wheel |
| CN107201203A (en) * | 2017-04-29 | 2017-09-26 | 成都博美实润科技有限公司 | A kind of preparation method of boric acid modified thermostable phenolic resin adhesive |
| CN107378803A (en) * | 2017-08-09 | 2017-11-24 | 安徽昌悌进出口贸易有限公司 | A kind of resin base high-strength abrasion-proof emery wheel material and preparation method thereof |
| CN107629181A (en) * | 2017-10-30 | 2018-01-26 | 湖南金泰检测检验有限公司 | Phenol-formaldehyde resin modified, modified phenolic resin grease article and its preparation method and application |
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Application publication date: 20181123 |
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