CN105328587A - Fiber modified resin sand wheel and preparing method thereof - Google Patents

Fiber modified resin sand wheel and preparing method thereof Download PDF

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Publication number
CN105328587A
CN105328587A CN201510657728.6A CN201510657728A CN105328587A CN 105328587 A CN105328587 A CN 105328587A CN 201510657728 A CN201510657728 A CN 201510657728A CN 105328587 A CN105328587 A CN 105328587A
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Prior art keywords
hour
phenol
minute
fibre
parts
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CN201510657728.6A
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Chinese (zh)
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薛典荣
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Priority to CN201510657728.6A priority Critical patent/CN105328587A/en
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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
    • 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
    • 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
    • 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
    • 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
    • B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
    • B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
    • C08G8/28—Chemically modified polycondensates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/1409—Abrasive particles per se

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

The invention discloses a fiber modified resin sand wheel. The fiber modified resin sand wheel is prepared from, by weight, 570-600 parts of CBN abrasive, 90-100 parts of phenol, 96-110 parts of 35-40% formaldehyde solution, 5-7 parts of boric acid, 2-6 parts of hexamethylenetetramine, 13-20 parts of aniline, 0.3-1 part of fatty alcohol polyoxyethylene ether ammonium sulfate, 3-4 parts of polytetrafluoroethylene fiber, 1-2 parts of polyethylene terephthalate fiber, 1-2 parts of oleic acid and 30-40 parts of bone black. According to the fiber modified resin sand wheel, the adhesiveness between the resin and a binding agent can be improved through the added polytetrafluoroethylene fibers and polyethylene terephthalate fibers, and hair-cracking grains, collapsing and the like can be prevented effectively.

Description

A kind of fibre modification resin wheel and preparation method thereof
Technical field
The present invention relates to emery wheel technical field, particularly relate to a kind of fibre modification resin wheel and preparation method thereof.
Background technology
Along with automobile, the improving constantly of aircraft uniform velocity, more strict to the requirement of the friction material such as transmission, braking, and matrix is exploitation and the emphasis of research as the important component part of friction material always.Phenolic resins, epoxy resin, butadiene-styrene rubber and polytetrafluoroethylene (PTFE) all can be used as the matrix of friction material, but epoxy resin, butadiene-styrene rubber and polytetrafluoroethylene (PTFE) limit its application in friction material due to poor anti-wear performance, heat resistance and bond performance.The advantage of phenolic resins in heat resistance, bond performance, mechanical property, moulding processability and cost etc., becomes the most frequently used adhesive matrix material of composite friction material.But the defects such as when pure phenolic resin exists that fragility is large, poor toughness, hardness are high, heat resistance is not enough, intensity is low and use noise is large, extreme influence Properties of Friction Materials, therefore, carrying out modification to phenolic resins is the effective ways improving its combination property.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of fibre modification resin wheel and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of fibre modification resin wheel, it is made up of the raw material of following weight parts:
CBN abrasive material 570-600, phenol 90-100,35-40% formalin 96-110, boric acid 5-7, hexamethylenetetramine 2-6, aniline 13-20, ethoxylated alkyl ammonium sulfate 0.3-1, polytetrafluoroethylene fibre 3-4, dacron fibre 1-2, oleic acid 1-2, bone black 30-40.
A preparation method for described fibre modification resin wheel, comprises the following steps:
(1) being joined in 16-20 times of absolute ethyl alcohol by above-mentioned dacron fibre, add ethoxylated alkyl ammonium sulfate, stir, is fibre emulsion;
(2) 70-75% of 68-75%, 35-40% formalin weight of above-mentioned phenol weight is mixed, stir, add NaOH, adjustment PH is 8-9, and raised temperature is 70-75 DEG C, insulated and stirred 1.6-2 hour, add boric acid, raised temperature is 110-120 DEG C, decompression dehydration 50-60 minute, add the absolute ethyl alcohol of mixed system weight 2-3%, stir, first at 80-90 DEG C, heat 8-10 hour, then at 110-115 DEG C, heat 8-9 hour, cooling, obtains boric acid phenolic resins;
(3) above-mentioned boric acid phenolic resins is joined in fibre emulsion, be uniformly mixed 30-40 minute, decompression distillation, remove ethanol, mix with hexamethylenetetramine, wear into fine powder, cross 160-200 mesh sieve, obtain boric acid phenol-formaldehyde resin powder;
(4) by remaining phenol, the mixing of 35-40% formalin, add mixed liquor weight 1-1.5 butanone doubly, stir, be heated to 80-85 DEG C, drip aniline, insulation reaction 4-6 hour at the temperature disclosed above after dropwising, heating decompression distillation to system temperature is 100-105 DEG C, cooling, obtains benzoxazine monomer;
(5) by above-mentioned boric acid phenol-formaldehyde resin powder, the mixing of benzoxazine monomer, join in compound weight 2-3 butanone doubly, stirring and dissolving, vacuum drying 2.6-3 hour at 76-80 DEG C, concentrated, be cured under following intensification system, described intensification system is: 80-90 DEG C, 50-60 minute; 100-110 DEG C, 100-120 minute; 130-140 DEG C, 40-50 minute are benzoxazine phenol-formaldehyde resin modified;
(6) by bone black, polytetrafluoroethylene fibre mixing, 40-50 minute is heated at 300-350 DEG C, cooling discharging, mix with benzoxazine phenol-formaldehyde resin modified, stir, add each raw material of residue, hot-forming, described hot pressing temperature is 160-170 DEG C, pressure 39O-410T, hot pressing time are 30-32 minute, and in hot pressing, every 4-5 minute steam bleeding once;
(7) by above-mentioned hot-forming after resin grinding wheels thickness closed assembly according to demand get up, separate with sheet iron plate, put into the hardening furnace preset and harden, the intensification system of sclerosis is: 100-120 DEG C, 4-5 hour; 125-140 DEG C, 7-8 hour; 150-170 DEG C, 1-2 hour; 180-185 DEG C, 8-9 hour; Naturally cool after stopping heating, obtain described resin wheel.
Advantage of the present invention is:
Emery wheel of the present invention has good heat endurance, and this is owing to introducing benzoxazine resin in phenolic cure structure, and it is a kind of containing phenyl ring and the heteroatomic dicyclic compound of N, O, so heat endurance is strong;
Wheel hardness of the present invention is high, and this is owing to adding benzoxazine monomer, and in its hot pressing at emery wheel and hardening process, volatile substances is few, reduces the porosity of emery wheel, improves compactness and hardness;
Emery wheel revolving strength of the present invention is high, and this is that emery wheel after hardening volume contraction is little owing to adding benzoxazine monomer, decreases internal stress and micro-crack;
The present invention introduces boron at emery wheel in phenolic resins, improve the combination property of finished product, this is because phenolic resins is to connect phenyl ring by C-C key, and boron bakelite resin is by B-" key connects phenyl ring; wherein the bond energy of C-C is the bond energy of 347KJ/mol, B-O is 523KJ/mol, far above the bond energy of C-C; define the three-dimensional cross-linked structure of boracic, can significantly improve the heat resistance of emery wheel, instantaneous heat-resisting quantity, ablation resistance;
The polytetrafluoroethylene fibre that the present invention adds, dacron fibre can strengthen the cohesive between resin and binding agent, effectively can prevent micro-crack, defeated and dispersed etc.
Detailed description of the invention
A kind of fibre modification resin wheel, it is made up of the raw material of following weight parts:
CBN abrasive material 570, phenol 90,35% formalin 96, boric acid 5, hexamethylenetetramine 2, aniline 13, ethoxylated alkyl ammonium sulfate 0.3, polytetrafluoroethylene fibre 3, dacron fibre 1, oleic acid 1, bone black 30.
A preparation method for described fibre modification resin wheel, comprises the following steps:
(1) being joined in 16 times of absolute ethyl alcohols by above-mentioned dacron fibre, add ethoxylated alkyl ammonium sulfate, stir, is fibre emulsion;
(2) mix 70% of 68%, 35% formalin weight of above-mentioned phenol weight, stir, add NaOH, regulate PH to be 8, raised temperature is 70 DEG C, insulated and stirred 1.6 hours, add boric acid, raised temperature is 110 DEG C, decompression dehydration 50 minutes, add the absolute ethyl alcohol of mixed system weight 2%, stir, first heat 8 hours at 80 DEG C, then heat 8 hours at 110 DEG C, cooling, obtains boric acid phenolic resins;
(3) above-mentioned boric acid phenolic resins is joined in fibre emulsion, be uniformly mixed 30 minutes, decompression distillation, remove ethanol, mix with hexamethylenetetramine, wear into fine powder, cross 160 mesh sieves, obtain boric acid phenol-formaldehyde resin powder;
(4) by remaining phenol, 35% formalin mixing, add the butanone of mixed liquor weight 1 times, stir, be heated to 80 DEG C, drip aniline, insulation reaction 4 hours at the temperature disclosed above after dropwising, heating decompression distillation to system temperature is 100 DEG C, and cooling, obtains benzoxazine monomer;
(5) by above-mentioned boric acid phenol-formaldehyde resin powder, the mixing of benzoxazine monomer, join in the butanone of compound weight 2 times, stirring and dissolving, vacuum drying 2.6 hours at 76 DEG C, concentrated, be cured under following intensification system, described intensification system is: 80 DEG C, 50 minutes; 100 DEG C, 100 minutes; 130 DEG C, 40 minutes is benzoxazine phenol-formaldehyde resin modified;
(6) by bone black, polytetrafluoroethylene fibre mixing, heat 40 minutes at 300 DEG C, cooling discharging, mix with benzoxazine phenol-formaldehyde resin modified, stir, add each raw material of residue, hot-forming, described hot pressing temperature is 160 DEG C, pressure 39OT, hot pressing time are 30 minutes, and in hot pressing, every 4 minutes steam bleedings once;
(7) by above-mentioned hot-forming after resin grinding wheels thickness closed assembly according to demand get up, separate with sheet iron plate, put into the hardening furnace preset and harden, the intensification system of sclerosis is: 100 DEG C, 4 hours; 125 DEG C, 7 hours; 150 DEG C, 1 hour; 180 DEG C, 8 hours; Naturally cool after stopping heating, obtain described resin wheel.
Performance test:
Heat decomposition temperature: >=420 DEG C;
Revolving strength 139m/s;
Abrasion test: with commercially available phenolic resins emery wheel and the emery wheel of the present invention of identical weight, same size, weight is 1kg, cut channel-section steel continuously in the same way respectively, emery wheel weight after commercially available phenol resin sand wheel cutting is 973g, weight after emery wheel cutting of the present invention is 980g, wear away little, durability is high.

Claims (2)

1. a fibre modification resin wheel, is characterized in that what it was made up of the raw material of following weight parts:
CBN abrasive material 570-600, phenol 90-100,35-40% formalin 96-110, boric acid 5-7, hexamethylenetetramine 2-6, aniline 13-20, ethoxylated alkyl ammonium sulfate 0.3-1, polytetrafluoroethylene fibre 3-4, dacron fibre 1-2, oleic acid 1-2, bone black 30-40.
2. a preparation method for fibre modification resin wheel as claimed in claim 1, is characterized in that comprising the following steps:
(1) being joined in 16-20 times of absolute ethyl alcohol by above-mentioned dacron fibre, add ethoxylated alkyl ammonium sulfate, stir, is fibre emulsion;
(2) 70-75% of 68-75%, 35-40% formalin weight of above-mentioned phenol weight is mixed, stir, add NaOH, adjustment PH is 8-9, and raised temperature is 70-75 DEG C, insulated and stirred 1.6-2 hour, add boric acid, raised temperature is 110-120 DEG C, decompression dehydration 50-60 minute, add the absolute ethyl alcohol of mixed system weight 2-3%, stir, first at 80-90 DEG C, heat 8-10 hour, then at 110-115 DEG C, heat 8-9 hour, cooling, obtains boric acid phenolic resins;
(3) above-mentioned boric acid phenolic resins is joined in fibre emulsion, be uniformly mixed 30-40 minute, decompression distillation, remove ethanol, mix with hexamethylenetetramine, wear into fine powder, cross 160-200 mesh sieve, obtain boric acid phenol-formaldehyde resin powder;
(4) by remaining phenol, the mixing of 35-40% formalin, add mixed liquor weight 1-1.5 butanone doubly, stir, be heated to 80-85 DEG C, drip aniline, insulation reaction 4-6 hour at the temperature disclosed above after dropwising, heating decompression distillation to system temperature is 100-105 DEG C, cooling, obtains benzoxazine monomer;
(5) by above-mentioned boric acid phenol-formaldehyde resin powder, the mixing of benzoxazine monomer, join in compound weight 2-3 butanone doubly, stirring and dissolving, vacuum drying 2.6-3 hour at 76-80 DEG C, concentrated, be cured under following intensification system, described intensification system is: 80-90 DEG C, 50-60 minute; 100-110 DEG C, 100-120 minute; 130-140 DEG C, 40-50 minute are benzoxazine phenol-formaldehyde resin modified;
(6) by bone black, polytetrafluoroethylene fibre mixing, 40-50 minute is heated at 300-350 DEG C, cooling discharging, mix with benzoxazine phenol-formaldehyde resin modified, stir, add each raw material of residue, hot-forming, described hot pressing temperature is 160-170 DEG C, pressure 39O-410T, hot pressing time are 30-32 minute, and in hot pressing, every 4-5 minute steam bleeding once;
(7) by above-mentioned hot-forming after resin grinding wheels thickness closed assembly according to demand get up, separate with sheet iron plate, put into the hardening furnace preset and harden, the intensification system of sclerosis is: 100-120 DEG C, 4-5 hour; 125-140 DEG C, 7-8 hour; 150-170 DEG C, 1-2 hour; 180-185 DEG C, 8-9 hour; Naturally cool after stopping heating, obtain described resin wheel.
CN201510657728.6A 2015-10-10 2015-10-10 Fiber modified resin sand wheel and preparing method thereof Pending CN105328587A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105965406A (en) * 2016-05-25 2016-09-28 安徽砥钻砂轮有限公司 Nano ceramic-modified silane resin grinding wheel and preparation method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4920159A (en) * 1987-12-28 1990-04-24 Allies-Signal Inc. Friction resistant composition
CN1082565A (en) * 1993-09-08 1994-02-23 肖宏遥 Contain boron modified phenolic resin composite material of glass flake and preparation method thereof
US5344854A (en) * 1992-02-07 1994-09-06 Mitsubishi Gas Company, Inc. Friction material for brake
CN102814759A (en) * 2012-07-31 2012-12-12 安徽威铭耐磨材料有限公司 Diamond resin grinding wheel and preparation method thereof
CN103396650A (en) * 2013-07-25 2013-11-20 南京市荣达树脂有限公司 Modified phenolic resin-base friction material
CN104861650A (en) * 2015-06-10 2015-08-26 花秀兵 Heat-resistant benzoxazine resin and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4920159A (en) * 1987-12-28 1990-04-24 Allies-Signal Inc. Friction resistant composition
US5344854A (en) * 1992-02-07 1994-09-06 Mitsubishi Gas Company, Inc. Friction material for brake
CN1082565A (en) * 1993-09-08 1994-02-23 肖宏遥 Contain boron modified phenolic resin composite material of glass flake and preparation method thereof
CN102814759A (en) * 2012-07-31 2012-12-12 安徽威铭耐磨材料有限公司 Diamond resin grinding wheel and preparation method thereof
CN103396650A (en) * 2013-07-25 2013-11-20 南京市荣达树脂有限公司 Modified phenolic resin-base friction material
CN104861650A (en) * 2015-06-10 2015-08-26 花秀兵 Heat-resistant benzoxazine resin and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105965406A (en) * 2016-05-25 2016-09-28 安徽砥钻砂轮有限公司 Nano ceramic-modified silane resin grinding wheel and preparation method thereof

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