CN103481210B - A kind of emery wheel mesh sheet bonding agent and preparation method thereof - Google Patents
A kind of emery wheel mesh sheet bonding agent and preparation method thereof Download PDFInfo
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- CN103481210B CN103481210B CN201310406598.XA CN201310406598A CN103481210B CN 103481210 B CN103481210 B CN 103481210B CN 201310406598 A CN201310406598 A CN 201310406598A CN 103481210 B CN103481210 B CN 103481210B
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Abstract
The present invention relates to a kind of emery wheel mesh sheet bonding agent and preparation method thereof, this bonding agent by novolac resin 80-110 part, curing agent 1-6 part, thermosetting phenolic resin liquid 20-40 part, alcohol 60-140 part, flexibilizer 0.5-2 part, coupling agent 0.5-2 part, plasticizer 0.5-2 part forms.Its preparation method adds alcohol in agitator, add novolac resin while stirring, stir 3-4 hour, treat that phenolic resins block all dissolves, add the thermosetting phenolic resin liquid containing coupling agent, plasticizer and alcoholic flexibilizer, stir and add curing agent in 3-4 hour, continue to stir 4-6 hour, obtain this bonding agent.Bonding agent prepared by the present invention can instantly be joined, decreasing pollution and waste, good stability, and it is mainly used in dipping emery wheel mesh sheet, improves emery wheel mesh sheet fragility, improves intensity, adhesive property, thus improve emery wheel wearability, the highest revolution rotating speed and service life.
Description
Technical field
The present invention relates to a kind of bonding agent and preparation method thereof, particularly relate to a kind of emery wheel mesh sheet bonding agent and preparation method thereof.
Background technology
Emery wheel mesh sheet is the bone in resin wheel, plays a part particularly important to the intensity of whole emery wheel, directly determines the quality of emery wheel.Emery wheel mesh sheet is die-cut after adopting emery wheel screen cloth to be coated with bonding agent oven dry forming, and laminating non-woven fabrics, black paper and plastic sheeting when needing, have excellent tensile strength and warp resistance performance, is the enhancing base material of various resin wheel the best.And superior service life and the tear resistance directly affecting emery wheel of the adhesive performance of emery wheel mesh sheet.
The reactor reaction of traditional emery wheel mesh sheet bonding agent Dou Shi manufacturer forms, and memory time is short, and bonding agent take methyl alcohol as solvent, and transport and storage all exist very large potential safety hazard.And a large amount of waste water can be caused in the building-up process of bonding agent, waste liquid, cause very large impact to environment.And traditional caking agent formula is single, cause the adhesion of emery wheel backing wire sheet and sand and resin weak, in conjunction with not tight, cause the not wear-resisting of emery wheel, service life is low.
About emery wheel mesh sheet bonding agent, have been reported in prior art.As Chinese invention patent (publication number: CN102952449A) relates to a kind of coating formula of emery wheel mesh sheet, this coating composition comprises novolac resin 50-60 part, thermosetting phenolic resin 10-15 part, solvent 30 parts, silane coupler 1-2 part.Adopt emery wheel mesh sheet prepared by this coating, plasticity and fragility is poor, intensity is low, adhesive effect is general, the emery wheel made wears no resistance, the highest revolution rotating speed is low, service life is short.
Summary of the invention
The present invention is directed to the above-mentioned problems in the prior art, a kind of environmental protection, stable performance and can improve the bonding agent of emery wheel mesh sheet plasticity and fragility, raising intensity and adhesive effect are provided, thus improve the wearability of emery wheel, the highest revolution rotating speed and service life.
Object of the present invention realizes by following technical proposal: a kind of emery wheel mesh sheet bonding agent, and this bonding agent is made up of the raw material of following parts by weight:
Novolac resin: 80-110 part curing agent: 1-6 part
Thermosetting phenolic resin liquid: 20-40 part alcohol: 60-140 part
Flexibilizer: 0.5-2 part coupling agent: 0.5-2 part plasticizer: 0.5-2 part.
Phenolic resins adhesion, heat resistance, Burning corrosion resistance, excellent in flame retardance that the present invention selects, and material is easy to get, cheap.Wherein novolac resin has thermoplasticity under without the effect of curing agent, still there is after making its impregnated glass fiber the ability of reprocessing, thermosetting phenolic resin liquid does not need curing agent to have curing characteristics equally yet, make mesh sheet in emery wheel be combined with good cementability to abrasive material, and the dry wet degree of mesh sheet can be regulated so that better acclimatization factor is on the impact of mesh sheet.In addition add the fragility that flexibilizer improves phenolic resins, improve its adhesive property and mechanical strength, the flexibilizer of employing is lower to requirement for environmental conditions, and simple mechanical mixture just can reach modification object at normal temperatures.The present invention simultaneously also adds plasticizer, and it plays synergy together with flexibilizer, can increase the plasticity of mesh sheet for emery wheel mesh sheet, improves the fragility of mesh sheet, and abrasive material in emery wheel mesh sheet and emery wheel is better combined.The present invention adopts alcohol as solvent in addition, not only can reduce the injury to human body, improve working conditions, and make full use of similar dissolve mutually theory, reach the object that various component is fully dissolved.And the production equipment that bonding agent of the present invention adopts in manufacturing process is simple, easy to operate, can make at normal temperatures, economize energy, production safety.When making emery wheel mesh sheet, adopt solid phenolic resin sheet as raw material, then formula of the present invention is utilized to make bonding agent by being simply uniformly mixed, the object needing at any time to prepare at any time can being accomplished, avoiding because buying when bonding agent is deposited affected by environment large and cause properties of product unstable.The bonding agent of the present invention's preparation can improve emery wheel mesh sheet plasticity and fragility, the intensity of raising emery wheel mesh sheet and adhesive effect, and performance formula of the present invention is more stable in addition, and memory time is longer.
As preferably, described bonding agent is made up of the raw material of following parts by weight:
Novolac resin: 90-100 part curing agent: 2-4 part
Thermosetting phenolic resin liquid: 25-35 part alcohol: 80-120 part
Flexibilizer: 0.5-1 part coupling agent: 1-1.5 part plasticizer: 0.5-1 part.
Above-mentioned preparation is the further optimization to binder formula of the present invention, not only better in environmental protection, the performance such as stable by above-mentioned optimization blends bonding of the present invention, and improves emery wheel mesh sheet plasticity and fragility further, improves its intensity and adhesive effect.
As preferably, described curing agent is methenamine.The present invention adopts urotropine firming agent, when resin melting, its phenyl ring has unreacted active site, and now methenamine decomposes and coupled together by two phenol rings with methine bridge, makes resin polycondensation form three-dimensional-structure.If but methenamine addition very little, resin solidification crosslinking degree is inadequate, and room temperature tensile strength and the hot toughness of bonding agent are all lower; And methenamine addition is excessive, can make resin crosslinks overreact, there is more defect in adhesion bridge, core produces obvious fragility, and intensity and hot toughness all obviously decline, so the addition of methenamine need be controlled in weight range of the present invention.
As preferably, described flexibilizer is one or both in polyvinyl butyral resin, epoxy resin.Further preferably: the present invention selects model to be polyvinyl butyral resin or the epoxy resin of 4-25 second.Polyvinyl butyral contains the high polymer of hydroxyl, acetal radical and acetyl group side chain, can improve the fragility of phenolic resins, improves adhesive force and mechanical strength.And containing hydroxyl in epoxy resin, ehter bond and active epoxy base, can substantially improve the fragility of phenolic resins, improves its adhesive property.And both are comparatively simple to the modification of phenolic resins, and mechanical mixture just can reach modification object at normal temperatures.
As preferably, described coupling agent is one or more in silane coupler Si-603, silane resin acceptor kh-550, silane coupler KH-560, Silane coupling reagent KH-570, silane coupler DL-602, silane coupler DL-171.The lower alkyloxy of the coupling agent that the present invention adopts not only containing close inorganic group, can in fiber surface generation exchange reaction; The long-chain molecule such as ester acyl group, chain alkyl containing close organic group; can react with resin; well be dissolved in the surface of resin; improve the cohesive force between interface; the combination property of significant raising phenolic resins, and the service life of phenolic resins can be extended and reduce the water imbibition of fiber self.And after gluing, rely on the diffusion of molecule, move to bonding interface place and produce coupled action.In order to obtain better intensity and bond properties, obtaining better outward appearance simultaneously and better improving mesh sheet fragility, further preferably: the coupling agent that the present invention adopts is one or both in silane coupler Si-603 or KH-550.
As preferably, described plasticizer is one or both in dibutyl phthalate, dioctyl phthalate.The plasticizer that the present invention adopts plays synergy together with flexibilizer, increases the plasticity of fiber mat, improves the fragility of mesh sheet, abrasive material in fiber mat and emery wheel is better combined.
Another object of the present invention is the preparation method providing this emery wheel mesh sheet bonding agent, comprises the following steps:
S1: add coupling agent in thermosetting phenolic resin liquid, stir, places for subsequent use;
S2: get flexibilizer and be dissolved in alcohol, fully dissolves for subsequent use;
S3: add alcohol in agitator, starts agitator and stirs, add novolac resin, stir about 3-4 hour, until phenolic resins block all dissolves, adds the thermosetting phenolic resin liquid containing coupling agent that step S1 obtains, stir, add the flexibilizer that plasticizer and step S2 obtain;
S4: stir and add curing agent after 3-4 hour, continue to stir 4-6 hour, blowing barrelling seals, and obtains emery wheel mesh sheet bonding agent.
The preparation method of bonding agent of the present invention is simple, and production equipment is simple, and can make at normal temperatures, namely can join and namely use.
The present invention has the following advantages:
1. emery wheel mesh sheet bonding agent of the present invention is mainly used in the dipping of emery wheel mesh sheet, makes that emery wheel mesh sheet fragility is very significantly improved, intensity improves, adhesive property is better, use and can suitably reduce mesh sheet specification and quantity in the emery wheel of same performance, cost-saving.
2. emery wheel mesh sheet bonding agent of the present invention overcomes the shortcoming of a large amount of dry linting, reduces dust pollution, improves the working environment of workers.
3. emery wheel mesh sheet bonding agent preparation of the present invention is simple, does not produce the pollutants such as waste water,waste gas and industrial residue, can instantly join, produce emery wheel mesh sheet, decreases and pollutes and waste, and when avoiding bonding agent to deposit, the properties of product that cause affected by environment are unstable.
4. the emery wheel mesh sheet of bonding agent dipping of the present invention is used for, in emery wheel, improving the wearability of emery wheel, the highest revolution rotating speed and service life.
Detailed description of the invention
Be below specific embodiments of the invention, technical scheme of the present invention is further described, but the present invention is not limited to these embodiments.
Table 1 embodiment 1-5 raw material composition and parts by weight
Embodiment 1:
According to table 1 embodiment 1 Raw composition and parts by weight, in 25 parts of thermosetting phenolic resin liquid, add 1.2 parts of silane coupler Si-603, stir, place for subsequent use.Getting 0.5 part of flexibilizer polyvinyl butyral resin is dissolved in 2 parts of alcohol, fully dissolves for subsequent use.80 parts of alcohol are added afterwards in large stirrer, start agitator to stir, add novolac resin 90 parts, stir about 3 hours, add prepare containing the thermosetting phenolic resin liquid of coupling agent, to be mixed evenly after add the flexibilizer and 0.5 part of plasticizer phthalic acid dibutyl ester that prepare.Stir and add curing agent methenamine 3 parts after 3 hours, and with the container more than 3 parts of alcohol rinse used, add agitator and continue stirring 4 hours, blowing barrelling sealing, obtains emery wheel mesh sheet bonding agent.
Embodiment 2:
According to table 1 embodiment 2 Raw composition and parts by weight, in 30 parts of thermosetting phenolic resin liquid, add 1.2 parts of silane coupler DL-602, stir, place for subsequent use.Getting 0.8 part of flexibilizer epoxy resin is dissolved in 4 parts of alcohol, fully dissolves for subsequent use.90 parts of alcohol are added afterwards in large stirrer, start agitator to stir, add novolac resin 100 parts, stir about 4 hours, add prepare containing the thermosetting phenolic resin liquid of coupling agent, to be mixed evenly after add the flexibilizer and 0.8 part of plasticizer phthalic acid dioctyl ester that prepare.Stir and add curing agent methenamine 4 parts after 3 hours, and with the container more than 6 parts of alcohol rinse used, add agitator and continue stirring 5 hours, blowing barrelling sealing, obtains emery wheel mesh sheet bonding agent.
Embodiment 3:
According to table 1 embodiment 3 Raw composition and parts by weight, in 35 parts of thermosetting phenolic resin liquid, add 1.2 parts of silane resin acceptor kh-550s, stir, place for subsequent use.Getting 1 part of flexibilizer polyvinyl butyral resin is dissolved in 5 parts of alcohol, fully dissolves for subsequent use.100 parts of alcohol are added afterwards in large stirrer, start agitator to stir, add novolac resin 95 parts, stir about 3.5 hours, add prepare containing the thermosetting phenolic resin liquid of coupling agent, to be mixed evenly after add the flexibilizer and 1 part of plasticizer phthalic acid dibutyl ester that prepare.Stir and add curing agent methenamine 2 parts after 4 hours, and with the container more than 5 parts of alcohol rinse used, add agitator and continue stirring 5 hours, blowing barrelling sealing, obtains emery wheel mesh sheet bonding agent.
Embodiment 4:
According to table 1 embodiment 4 Raw composition and parts by weight, in 35 parts of thermosetting phenolic resin liquid, add 1.2 parts of silane coupler KH-560, stir, place for subsequent use.Get 0.5 part of polyvinyl butyral resin and 0.5 part of epoxy resin is dissolved in 5 parts of alcohol, fully dissolve for subsequent use.85 parts of alcohol are added afterwards in large stirrer, start agitator to stir, add novolac resin 100 parts, stir about 3.5 hours, add prepare containing the thermosetting phenolic resin liquid of coupling agent, to be mixed evenly after add the flexibilizer and 1 part of plasticizer phthalic acid dibutyl ester that prepare.Stir and add curing agent methenamine 2 parts after 4 hours, and with the container more than 5 parts of alcohol rinse used, add agitator and continue stirring 6 hours, blowing barrelling sealing, obtains emery wheel mesh sheet bonding agent.
Embodiment 5:
According to table 1 embodiment 5 Raw composition and parts by weight, in 25 parts of thermosetting phenolic resin liquid, add 0.5 part of silane coupler Si-603 and 0.5 part silane resin acceptor kh-550, stir, place for subsequent use.Getting 0.8 part of flexibilizer epoxy resin is dissolved in 5 parts of alcohol, fully dissolves for subsequent use.90 parts of alcohol are added afterwards in large stirrer, start agitator to stir, add novolac resin 95 parts, stir about 3.5 hours, add prepare containing the thermosetting phenolic resin liquid of coupling agent, to be mixed evenly after add the flexibilizer and 0.5 part of dibutyl phthalate and 0.5 part of dioctyl phthalate that prepare.Stir and add curing agent methenamine 4 parts after 4 hours, and with the container more than 5 parts of alcohol rinse used, add agitator and continue stirring 6 hours, blowing barrelling sealing, obtains emery wheel mesh sheet bonding agent.
Comparative example:
Common phenolic resin adhesive commercially.
Performance test:
Choose the binder-impregnated emery wheel mesh sheet in bonding agent obtained in embodiment of the present invention 1-5 and comparative example, and carry out performance test to the emery wheel mesh sheet after dipping, result is as shown in table 2.
The performance test results of the emery wheel mesh sheet that table 2 floods with embodiment 1-5 and comparative example bonding agent
The grinding wheel performance test result that the emery wheel mesh sheet that table 3 embodiment 1-5 and comparative example bonding agent flood prepares
Draw from table, use the emery wheel mesh sheet that bonding agent of the present invention floods, radial, broadwise is stretched fracture strength intensity and is all increased, and uses and can suitably reduce mesh sheet specification and quantity in the emery wheel of same performance, cost-saving.Use the emery wheel that the emery wheel mesh sheet that bonding agent of the present invention floods prepares, the emery wheel revolving strength of 2# and 3# promotes larger.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although made a detailed description the present invention and quoted some specific embodiments as proof, to those skilled in the art, only otherwise leaving the spirit and scope of the present invention can make various changes or revise.
Claims (3)
1. an emery wheel mesh sheet bonding agent, it is characterized in that, described bonding agent is made up of the raw material of following parts by weight: novolac resin: 90-100 part, curing agent: 2-4 part, thermosetting phenolic resin liquid: 25-35 part, alcohol: 80-120 part, flexibilizer: 0.5-1 part, coupling agent: 1-1.5 part, plasticizer: 0.5-1 part; Wherein, described curing agent is methenamine, and flexibilizer is one or both in the polyvinyl butyral resin of 4-25 second or epoxy resin;
The preparation method of this bonding agent comprises the following steps:
S1: add coupling agent in thermosetting phenolic resin liquid, stir, places for subsequent use;
S2: get flexibilizer and be dissolved in alcohol, fully dissolves for subsequent use;
S3: add alcohol in agitator, starts agitator and stirs, add novolac resin, stir 3-4 hour, until phenolic resins block all dissolves, add the thermosetting phenolic resin liquid containing coupling agent that step S1 obtains, stir, add the flexibilizer that plasticizer and step S2 obtain;
S4: stir and add curing agent after 3-4 hour, continue to stir 4-6 hour, blowing barrelling seals, and obtains emery wheel mesh sheet bonding agent.
2. a kind of emery wheel mesh sheet bonding agent according to claim 1, it is characterized in that, described coupling agent is one or more in silane coupler Si-603, silane resin acceptor kh-550, silane coupler KH-560, Silane coupling reagent KH-570, silane coupler DL-602, silane coupler DL-171.
3. a kind of emery wheel mesh sheet bonding agent according to claim 1, is characterized in that, described plasticizer is one or both in dibutyl phthalate, dioctyl phthalate.
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