CN103481210A - Adhesive for grinding wheel meshes and preparation method of adhesive - Google Patents
Adhesive for grinding wheel meshes and preparation method of adhesive Download PDFInfo
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- CN103481210A CN103481210A CN201310406598.XA CN201310406598A CN103481210A CN 103481210 A CN103481210 A CN 103481210A CN 201310406598 A CN201310406598 A CN 201310406598A CN 103481210 A CN103481210 A CN 103481210A
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Abstract
The invention relates to an adhesive for grinding wheel meshes and a preparation method of the adhesive. The adhesive comprises 80-110 parts of thermoplastic phenolic resin, 1-6 parts of curing agent, 20-40 parts of thermosetting phenol resin liquid, 60-140 parts of alcohol, 0.5-2 parts of flexibilizer, 0.5-2 parts of coupling agent and 0.5-2 parts of plasticizer. The preparation method includes adding the alcohol into a stirrer, adding the thermoplastic phenolic resin whiling stirring, stirring for 3-4 hours, adding the thermosetting phenol resin liquid containing the coupling agent, the plasticizer and the flexibilizer containing the alcohol after phenolic resin blocks are totally dissolved, stirring for 3-4 hours prior to adding the curing agent, and continue stirring for 4-6 hours to obtain the adhesive. The adhesive prepared by the method can be ready-to-use and ready-to-prepare and is good in stability pollution and mainly used for impregnation of the grinding wheel meshes, pollution and waste are reduced, brittleness of the grinding wheel mashes, strength and adhesive performance are improved, and accordingly wear resistance of grinding wheels is improved, highest rotation speed of the grinding wheel is increased, and service life of the grinding wheel is improved.
Description
Technical field
The present invention relates to a kind of bonding agent and preparation method thereof, relate in particular to bonding agent and preparation method thereof for a kind of emery wheel net sheet.
Background technology
Emery wheel net sheet is the bone in resin wheel, the intensity of whole emery wheel is played a part particularly important, directly determines the quality of emery wheel.Emery wheel net sheet is to adopt the emery wheel screen cloth to be coated with bonding agent to dry rear die-cut forming, and while needing, laminating nonwoven, black paper and plastic sheeting, have excellent tensile strength and warp resistance performance, is the enhancing base material of various resin wheel the bests.And superior service life and the tear resistance that directly affects emery wheel of the adhesive performance of emery wheel net sheet.
Traditional emery wheel net sheet bonding agent is all that manufacturer forms with the reactor reaction, and memory time is short, and bonding agent be take methyl alcohol as solvent, and all there are very large potential safety hazard in transportation and storage.And can cause a large amount of waste water in the building-up process of bonding agent, waste liquid, cause very large impact to environment.And traditional caking agent formula is single, a little less than causing the adhesion of emery wheel backing wire sheet and sand and resin, in conjunction with not tight, cause the not wear-resisting of emery wheel, service life is low.
About emery wheel net sheet bonding agent, in prior art, have been reported.As Chinese invention patent, (publication number: CN102952449A) relate to a kind of coating formula of emery wheel net sheet, this coating composition comprises novolac resin 50-60 part, thermosetting phenolic resin 10-15 part, 30 parts of solvents, silane coupler 1-2 part.The emery wheel net sheet that adopts this coating to prepare, plasticity and fragility are poor, intensity is low, adhesive effect is general, and the emery wheel of making 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 are provided and can improve emery wheel net sheet plasticity and the bonding agent of fragility, raising intensity and adhesive effect, thus wearability, the highest revolution rotating speed and the service life of improving emery wheel.
Purpose of the present invention can realize by following technical proposal: a kind of emery wheel net sheet bonding agent, and this bonding agent is made by 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 the effect without curing agent, make after its impregnated glass fiber still to have the ability of reprocessing, thermosetting phenolic resin liquid does not need curing agent to have curing characteristics equally yet, make net sheet in emery wheel be combined with good cementability to abrasive material, and can regulate the dry wet degree of net sheet so that the better impact of acclimatization factor on the net sheet.Add in addition flexibilizer to improve the fragility of 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 the modification purpose at normal temperatures.The present invention simultaneously also adds plasticizer, and it plays synergy together with flexibilizer, can increase the plasticity of net sheet for emery wheel net sheet, improves the fragility of net sheet, makes the better combination of abrasive material in emery wheel net sheet and emery wheel.The present invention adopts alcohol as solvent in addition, not only can reduce the injury to human body, improves working conditions, and takes full advantage of the similar compatibility principle, reaches the purpose that various components are 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, save the energy, production safety.When making emery wheel with the net sheet, adopt the solid phenolic resin sheet as raw material, then utilize formula of the present invention to make bonding agent by simply being uniformly mixed, can accomplish needs the purpose of preparing at any time at any time, avoids affected by environment when buying bonding agent and deposit and causes properties of product unstable greatly.The bonding agent of the present invention preparation can improve intensity and the adhesive effect of emery wheel net sheet plasticity and fragility, raising emery wheel net sheet, and performance formula of the present invention is more stable in addition, and memory time is longer.
As preferably, described bonding agent is made by 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 performance such as stable by above-mentioned optimization compatibility bonding of the present invention, and further improves emery wheel net sheet plasticity and fragility, improves its intensity and adhesive effect.
As preferably, described curing agent is methenamine.The present invention adopts urotropine firming agent, when resin melts, unreacted active site is arranged on its phenyl ring, and now methenamine decomposes and with the methine bridge, two phenol rings coupled together, and makes the resin polycondensation form three-dimensional-structure.If, but the methenamine addition very little, the resin solidification crosslinking degree is inadequate, the room temperature tensile strength of bonding agent and hot toughness are all lower; And the methenamine addition is excessive, can make the resin crosslinks overreact, there is more defect in adhesion bridge, core produces obvious fragility, and intensity and hot toughness all obviously descend, 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: it is 4-25 polyvinyl butyral resin or the epoxy resin of second that the present invention selects model.The high polymer that polyvinyl butyral contains 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 the modification purpose 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 coupling agent that the present invention adopts not only contains the short chain alkoxyl of close inorganic group, can be in fiber surface generation exchange reaction; The long-chain molecules such as the ester acyl group that contains close organic group, chain alkyl; can react with resin; well be dissolved in the surface of resin; improve the cohesive force between interface; the significant combination property that improves phenolic resins, and can extend the service life of phenolic resins and the water imbibition of reduction fiber self.And rely on the diffusion of molecule after gluing, move to the bonding interface place and produce coupled action.In order to obtain better intensity and bond properties, obtain better outward appearance simultaneously and better improve net 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 net sheet, makes the better combination of abrasive material in fiber mat and emery wheel.
Another object of the present invention is to provide the preparation method of this emery wheel net sheet with bonding agent, comprises the following steps:
S1: add coupling agent in thermosetting phenolic resin liquid, stir, place standby;
S2: get flexibilizer and be dissolved in alcohol, fully dissolve standby;
S3: add alcohol in agitator, start agitator and stir, add novolac resin, stir about 3-4 hour, until the phenolic resins piece all dissolves, the thermosetting phenolic resin liquid containing coupling agent that adds step S1 to obtain, stir, the flexibilizer that adds plasticizer and step S2 to obtain;
S4: stir and add curing agent after 3-4 hour, continue to stir 4-6 hour, blowing barrelling sealing, obtain emery wheel net 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, can join and use.
The present invention has the following advantages:
1. emery wheel net sheet of the present invention is mainly used in the dipping of emery wheel net sheet with bonding agent, makes that emery wheel net sheet fragility is very significantly improved, intensity improves, adhesive property is better, in the emery wheel of same performance, uses and can suitably reduce net sheet specification and quantity, cost-saving.
2. emery wheel net sheet of the present invention has overcome the shortcoming of a large amount of dry lintings with bonding agent, has reduced dust pollution, has improved the working environment of workers.
3. emery wheel net sheet of the present invention is simple with the bonding agent preparation, does not produce the pollutants such as waste water,waste gas and industrial residue, can instantly join, and produces emery wheel net sheet, has reduced and has polluted and waste, and while avoiding bonding agent to deposit, the properties of product that cause affected by environment are unstable.
4. the emery wheel net sheet of bonding agent dipping of the present invention, for emery wheel, can improve the wearability of emery wheel, the highest revolution rotating speed and service life.
The specific embodiment
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 embodiment.
Table 1 embodiment 1-5 raw material forms and parts by weight
Embodiment 1:
Form and parts by weight according to table 1 embodiment 1 Raw, add 1.2 parts of silane coupler Si-603 in 25 parts of thermosetting phenolic resin liquid, stir, place standby.Get 0.5 part of flexibilizer polyvinyl butyral resin and be dissolved in 2 parts of alcohol, fully dissolve standby.Add afterwards 80 parts of alcohol in large stirrer, starting agitator stirs, add 90 parts of novolac resins, stir about 3 hours, add the thermosetting phenolic resin liquid containing coupling agent prepared, add the flexibilizer and the 0.5 part of plasticizer phthalic acid dibutyl ester that prepare after stirring.Stir after 3 hours and add 3 parts of curing agent methenamines, and rinse the above container used with 3 parts of alcohol, add agitator to continue to stir 4 hours, blowing barrelling sealing, obtain emery wheel net sheet bonding agent.
Embodiment 2:
Form and parts by weight according to table 1 embodiment 2 Raws, add 1.2 parts of silane coupler DL-602 in 30 parts of thermosetting phenolic resin liquid, stir, place standby.Get 0.8 part of flexibilizer epoxy resin and be dissolved in 4 parts of alcohol, fully dissolve standby.Add afterwards 90 parts of alcohol in large stirrer, starting agitator stirs, add 100 parts of novolac resins, stir about 4 hours, add the thermosetting phenolic resin liquid containing coupling agent prepared, add the flexibilizer and the 0.8 part of plasticizer phthalic acid dioctyl ester that prepare after stirring.Stir after 3 hours and add 4 parts of curing agent methenamines, and rinse the above container used with 6 parts of alcohol, add agitator to continue to stir 5 hours, blowing barrelling sealing, obtain emery wheel net sheet bonding agent.
Embodiment 3:
Form and parts by weight according to table 1 embodiment 3 Raws, add 1.2 parts of silane resin acceptor kh-550s in 35 parts of thermosetting phenolic resin liquid, stir, place standby.Get 1 part of flexibilizer polyvinyl butyral resin and be dissolved in 5 parts of alcohol, fully dissolve standby.Add afterwards 100 parts of alcohol in large stirrer, starting agitator stirs, add 95 parts of novolac resins, stir about 3.5 hours, add the thermosetting phenolic resin liquid containing coupling agent prepared, add the flexibilizer and the 1 part of plasticizer phthalic acid dibutyl ester that prepare after stirring.Stir after 4 hours and add 2 parts of curing agent methenamines, and rinse the above container used with 5 parts of alcohol, add agitator to continue to stir 5 hours, blowing barrelling sealing, obtain emery wheel net sheet bonding agent.
Embodiment 4:
Form and parts by weight according to table 1 embodiment 4 Raws, add 1.2 parts of silane coupler KH-560 in 35 parts of thermosetting phenolic resin liquid, stir, place standby.Get 0.5 part of polyvinyl butyral resin and 0.5 part of epoxy resin is dissolved in 5 parts of alcohol, fully dissolve standby.Add afterwards 85 parts of alcohol in large stirrer, starting agitator stirs, add 100 parts of novolac resins, stir about 3.5 hours, add the thermosetting phenolic resin liquid containing coupling agent prepared, add the flexibilizer and the 1 part of plasticizer phthalic acid dibutyl ester that prepare after stirring.Stir after 4 hours and add 2 parts of curing agent methenamines, and rinse the above container used with 5 parts of alcohol, add agitator to continue to stir 6 hours, blowing barrelling sealing, obtain emery wheel net sheet bonding agent.
Embodiment 5:
Form and parts by weight according to table 1 embodiment 5 Raws, add 0.5 part of silane coupler Si-603 and 0.5 part of silane resin acceptor kh-550 in 25 parts of thermosetting phenolic resin liquid, stir, place standby.Get 0.8 part of flexibilizer epoxy resin and be dissolved in 5 parts of alcohol, fully dissolve standby.Add afterwards 90 parts of alcohol in large stirrer, starting agitator stirs, add 95 parts of novolac resins, stir about 3.5 hours, add the thermosetting phenolic resin liquid containing coupling agent prepared, add the flexibilizer and 0.5 part of dibutyl phthalate and the 0.5 part of dioctyl phthalate that prepare after stirring.Stir after 4 hours and add 4 parts of curing agent methenamines, and rinse the above container used with 5 parts of alcohol, add agitator to continue to stir 6 hours, blowing barrelling sealing, obtain emery wheel net sheet bonding agent.
Comparative Examples:
The common phenolic resin adhesive of buying from the market.
Performance test:
Choose in the embodiment of the present invention 1-5 bonding agent that makes and the binder-impregnated emery wheel net sheet in Comparative Examples, and the emery wheel net sheet after dipping is carried out to performance test, result is as shown in table 2.
The performance test results of the emery wheel net sheet of embodiment 1-5 and Comparative Examples bonding agent dipping for table 2
The grinding wheel performance test result that the emery wheel net sheet of table 3 embodiment 1-5 and Comparative Examples bonding agent dipping prepares
Draw from table, uses the emery wheel net sheet of bonding agent of the present invention dipping, radially, broadwise stretches fracture strength intensity and all increase, in the emery wheel of same performance, use can suitably reduce net sheet specification and quantity, cost-saving.The emery wheel that uses the emery wheel net sheet of bonding agent of the present invention dipping to prepare, 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 modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although the present invention has been made a detailed description and has quoted as proof some specific embodiments, to those skilled in the art, only otherwise leaving the spirit and scope of the present invention can make various changes or revise.
Claims (7)
1. an emery wheel net sheet bonding agent, is characterized in that, described bonding agent is made by 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.
2. a kind of emery wheel net sheet bonding agent according to claim 1, is characterized in that, described bonding agent is made by 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.
3. a kind of emery wheel net sheet bonding agent according to claim 1, is characterized in that, described curing agent is methenamine.
4. a kind of emery wheel net sheet bonding agent according to claim 1, is characterized in that, described flexibilizer is one or both in polyvinyl butyral resin, epoxy resin.
5. a kind of emery wheel net 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.
6. a kind of emery wheel net sheet bonding agent according to claim 1, is characterized in that, described plasticizer is one or both in dibutyl phthalate, dioctyl phthalate.
7. one kind as the described emery wheel net of claim 1-6 any one sheet bonding agent, it is characterized in that, the preparation method of described bonding agent comprises the following steps:
S1: add reinforcing agent in thermosetting phenolic resin liquid, stir, place standby;
S2: get flexibilizer and be dissolved in alcohol, fully dissolve standby;
S3: add alcohol in agitator, start agitator and stir, add novolac resin, stir about 3-4 hour, until the phenolic resins piece all dissolves, the thermosetting phenolic resin liquid containing coupling agent that adds step S1 to obtain, stir, the flexibilizer that adds plasticizer and step S2 to obtain;
S4: stir and add curing agent after 3-4 hour, continue to stir 4-6 hour, blowing barrelling sealing, obtain emery wheel net sheet bonding agent.
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Cited By (11)
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| CN104312472A (en) * | 2014-09-19 | 2015-01-28 | 宁波大华砂轮有限公司 | Anti-ageing mesh and preparation method thereof |
| CN104790105A (en) * | 2015-05-08 | 2015-07-22 | 南通天燕纺织器材有限公司 | Wooden shuttle |
| CN105255102A (en) * | 2015-11-06 | 2016-01-20 | 江苏九鼎新材料股份有限公司 | Glass fiber mesh for grinding wheel and manufacturing method of glass fiber mesh |
| CN106243907A (en) * | 2016-08-25 | 2016-12-21 | 南通启吾农产品有限公司 | A kind of coating formula of emery wheel mesh sheet |
| CN106985086A (en) * | 2017-04-28 | 2017-07-28 | 山东圣泉新材料股份有限公司 | A kind of phenol resin composition and its application, preparation method, emery wheel |
| CN107243850A (en) * | 2017-06-08 | 2017-10-13 | 南通哥班玻璃纤维制品有限公司 | A kind of preparation technology of super large emery wheel reinforcing glass fiber mat |
| CN107384273A (en) * | 2017-06-08 | 2017-11-24 | 南通哥班玻璃纤维制品有限公司 | A kind of super large emery wheel reinforcing glass fiber mat bonding agent |
| CN107386555A (en) * | 2017-06-12 | 2017-11-24 | 浙江瑞欣装饰材料有限公司 | Outdoor decoration plate and its manufacture craft |
| CN109266270A (en) * | 2017-07-17 | 2019-01-25 | 中国石油天然气股份有限公司 | Adhesive, preparation method and application |
| CN113480957A (en) * | 2021-07-02 | 2021-10-08 | 珠海邦瑞合成材料有限公司 | Glass fiber mesh for grinding wheel, preparation method of glass fiber mesh and grinding wheel |
| CN114800296A (en) * | 2022-03-30 | 2022-07-29 | 郑州九天工贸有限公司 | High-strength ultrathin abrasive cutting wheel and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104312472A (en) * | 2014-09-19 | 2015-01-28 | 宁波大华砂轮有限公司 | Anti-ageing mesh and preparation method thereof |
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| CN107386555A (en) * | 2017-06-12 | 2017-11-24 | 浙江瑞欣装饰材料有限公司 | Outdoor decoration plate and its manufacture craft |
| CN109266270A (en) * | 2017-07-17 | 2019-01-25 | 中国石油天然气股份有限公司 | Adhesive, preparation method and application |
| CN113480957A (en) * | 2021-07-02 | 2021-10-08 | 珠海邦瑞合成材料有限公司 | Glass fiber mesh for grinding wheel, preparation method of glass fiber mesh and grinding wheel |
| CN113480957B (en) * | 2021-07-02 | 2022-09-27 | 珠海邦瑞合成材料有限公司 | Glass fiber mesh for grinding wheel, preparation method of glass fiber mesh and grinding wheel |
| CN114800296A (en) * | 2022-03-30 | 2022-07-29 | 郑州九天工贸有限公司 | High-strength ultrathin abrasive cutting wheel and preparation method thereof |
| CN114800296B (en) * | 2022-03-30 | 2024-01-09 | 郑州九天工贸有限公司 | High-strength ultrathin abrasive cutting wheel and preparation method thereof |
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