CN102634309B - Acid-cured environment-friendly binder and preparation method thereof - Google Patents
Acid-cured environment-friendly binder and preparation method thereof Download PDFInfo
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- CN102634309B CN102634309B CN2012101399927A CN201210139992A CN102634309B CN 102634309 B CN102634309 B CN 102634309B CN 2012101399927 A CN2012101399927 A CN 2012101399927A CN 201210139992 A CN201210139992 A CN 201210139992A CN 102634309 B CN102634309 B CN 102634309B
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Abstract
The invention discloses an acid-cured environment-friendly binder consisting of the following formula ingredients in percent by weight: 50%-70% of plant phenolics and 20%-40% of furfuryl alcohol which are extracted from natural resources, 2%-10% of strong base type catalyst and 8%-20% of an inert solvent. A preparation method of the acid-cured environment-friendly binder comprises the steps of firstly, weighing materials by weight ratios; adding the plant phenolics in a reaction kettle; adding the catalyst when the temperature is increased to 40-60 DEG C; then increasing the temperature to 100-120 DEG C and keeping the temperature for 0.5-1.5 hours; continuously increasing the temperature to 280-350 DEG C and keeping the temperature for 1.5-3.5 hours; then lowering the temperature to 40-60 DEG C, regulating the pH value to 4-4.5, adding the furfuryl alcohol, increasing the temperature to 80-110 DEG C and keeping the temperature for 0.5-1.5 hours; and then lowering the temperature to 40-60 DEG C, adding the inert solvent, regulating the pH value to 6-8, and after that, regulating viscosity.
Description
Technical field
The present invention relates to the Chemical Felter field, a kind of acid cure environment-friendly type binding agent and preparation method thereof particularly, this binding agent can be used for the production of cast steel, cast iron and non-ferrous metal.
Background technology
Casting industry molding sand used is comprised of sand that is mixed with proper adhesive etc.Tackiness agent produces firmly bonding between the particle of sand, gives molding sand necessary mechanical stability.Since entering this century, whole world casting industry is facing to the challenge of two aspects: the one, the requirement of casting quality is improved constantly; Increasingly strict to the requirement of environment protection and cleaner production aspect besides.And a class of the tackiness agent that at present casting industry is used is resol, for example furane resin, alkali resol, resole and water glass resin.These resins all discharge objectionable constituent formaldehyde and phenol in casting heat-processed, seriously polluted while therefore pouring into a mould, and operating environment threat workman's is healthy.Produce a large amount of discarded sand simultaneously in producing, consume a large amount of natural resourcess and cause environmental pollution, casting quality is lower than international standard.
Summary of the invention
The objective of the invention is the shortcoming that regeneration rate is low, the antiquated sand quantity discharged is large for the harmful smoke such as release formaldehyde and phenol, sand in prior art, proposed that a kind of to take the requirement that meets environmental protection and cleaner production be target, the Chemical Felter developed on the basis of resole and alkalescent phenol resin.
The present invention is achieved in that a kind of acid cure environment-friendly type binding agent, it is characterized in that, comprise the plant phenols of extracting from natural resource, the furfuryl alcohol extracted from natural resource, highly basic class catalyzer and inert solvent, its component formula is counted with weight percent: plant phenols 50%～70%; Furfuryl alcohol 20%～40%; Catalyzer 2%～10%; Inert solvent 8%～20%.
The preferred Eugenol of described plant phenols, methyl catechol or cardanol; The described furfuryl alcohol extracted from natural resource is selected from the furfuryl alcohol extracted from wheat bran, bagasse or the wood sawdust of corn cob, oat or wheat, is preferably the furfuryl alcohol extracted from the wheat bran of corn cob, oat or wheat; Described highly basic class catalyzer is potassium hydroxide and/or hydrated barta; Described inert solvent is one or more combinations in glycol, diol, derivatives, ester, water or ethanol, preferred alcohol, water.
A kind of preparation method of acid cure environment-friendly type binding agent comprises the following steps:
Step 1: the formula of the component in weight percent by acid cure environment-friendly type binding agent of the present invention takes starting material,
Step 2: plant phenols is added in reactor, adds catalyzer while being warming up to 40 ℃～60 ℃,
Step 3: be warming up to 100 ℃～120 ℃ of temperature, insulation 0.5-1.5 hour, continue to be warming up to 280 ℃～350 ℃, insulation 1.5-3.5 hour,
Step 4: temperature is down to 40 ℃～60 ℃, adjusts pH value to 4～5.5, adds furfuryl alcohol, and temperature rises to 80 ℃～110 ℃, insulation 0.5-1.5 hour,
Step 5: temperature is down to 40 ℃～60 ℃, adds inert solvent to adjust pH value to 6--8, then debugs viscosity.
The present invention, owing to adopting above technical scheme, can have the following advantages:
1, binding agent of the present invention is not containing free formaldehyde and phenol.
2, the present invention has replaced formaldehyde non-renewable, that refine from oil and phenol with farm crop and plant leftover as raw material.
3, with the regeneration rate of the molding sand of binder making of the present invention up to 90%--95%, the recycle of non-renewable roughing sand has been created to good condition, reduced significantly the antiquated sand discharge.
4, adhesive strength of the present invention is high, and during the molding sand of preparation, add-on is few, reduces costs.
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment:
Plant phenols is the important component part of natural product, is one of main secondary metabolite of plant, is distributed widely in various higher plant organs such as vegetables, fruit, spice, cereal, beans and kernel, shell etc. aboundresources.The present invention mainly adopts plant phenols, furfuryl alcohol, catalyzer, inert solvent to make, be the product of environmental protection, can be used for cast steel, cast iron and nonferrous production.
Embodiment 1
At first take starting material, wherein containing cardanol 60%, the furfuryl alcohol 20% refined from corn cob, potassium hydroxide 8%, water 12%.
Then cardanol after testing moisture and ash content qualified after, put into reactor, add potassium hydroxide catalysed while being warming up to 40 ℃～60 ℃, cardanol under alkaline condition the high temperature autohemagglutination to 8--10 ten thousand MPas; Continue to be warming up to 100 ℃～120 ℃ of temperature, insulation 0.5-1.5 hour, continue to be warming up to 280 ℃～350 ℃, insulation 1.5-3.5 hour; Then be down to 40 ℃～60 ℃ and adjust pH value to 4～5.5, add furfuryl alcohol, temperature rises to 80 ℃～110 ℃, insulation 0.5-1.5 hour; Then temperature is down to 40 ℃～60 ℃ and is added water to adjust pH value to 6--8, then debugs viscosity, makes product.Subsequently product is carried out to every characterization test, result proves desired product.
The molding sand of selecting the present invention to prepare carries out rudder horn cast peculiar to vessel, and foundry goods is from melt pit pulls out, and large core is all defeated and dispersed, endoporus is penetrating, casting of appearance of cast does not have scab, corner angle clear, does not do any arrangement, removes after dead head to be transported to thermal treatment factory and to heat-treat.The outward appearance of this part is not carried out traditional charcoal plane, directly carries out after ball blast obtaining the visual appearance of high-quality, has greatly shortened the manufacturing cycle, has reduced the cleaning polishing cost of aftertreatment.
Production checking by this part, the sand bond of preparing with the present invention is high, the property deposited is good, collapsibility is good, massive casting with its production, can crush in production process, the follow-up charcoal plane that do not need, just can obtain the surface quality of high-quality after the foundry goods ball blast, shorten the manufacturing cycle, reduce manufacturing cost.The mechanical property of this product, apparent size, inner quality all reach the technical requirements of product, quality reaches the advanced level of international like product, in the whole process of producing at this part, the surveying society of 7 countries has carried out prison to whole process and has made, and has finally passed through the authentication of 7 surveying societies.
Embodiment 2
At first take starting material, wherein containing Eugenol 50%, the furfuryl alcohol 30% refined from corn cob, potassium hydroxide 8%, water 12%.
Eugenol after testing moisture and ash content qualified after, put into reactor, add hydrated barta catalysis while being warming up to 50 ℃～60 ℃, Eugenol under alkaline condition the high temperature autohemagglutination to 8--9 ten thousand MPas; Continue to be warming up to 110 ℃～120 ℃ of temperature, insulation 0.5-1 hour, continue to be warming up to 290 ℃～350 ℃, insulation 1.5-2.5 hour; Then be down to 50 ℃～60 ℃ and adjust pH value to 4～5, add furfuryl alcohol, temperature rises to 100 ℃～110 ℃, insulation 0.5-1 hour; Then temperature is down to 50 ℃～60 ℃ and is added water to adjust pH value to 7--8, then debugs viscosity, makes product.Subsequently product is carried out to every characterization test, result proves desired product.
Embodiment 3
At first take starting material, wherein containing methyl catechol 55%, the furfuryl alcohol 25% refined from corn cob, hydrated barta 8%, ethanol 12%.
Methyl catechol after testing moisture and ash content qualified after, put into reactor, add hydrated barta catalysis while being warming up to 50 ℃～55 ℃, methyl catechol under alkaline condition the high temperature autohemagglutination to 8.5--9 ten thousand MPas; Continue to be warming up to 115 ℃～120 ℃ of temperature, insulation 1-1.5 hour, continue to be warming up to 290 ℃～330 ℃, insulation 1.5-2 hour; Then be down to 50 ℃～55 ℃ and adjust pH value to 4.5～5, add furfuryl alcohol, temperature rises to 115 ℃～120 ℃, insulation 1-1.5 hour; Then temperature is down to 50 ℃～55 ℃ and is added ethanol to adjust pH value to 7.5--8, then debugs viscosity, makes product.Subsequently product is carried out to every characterization test, result proves desired product.
Embodiment 4
At first take starting material, wherein containing cardanol 70%, the furfuryl alcohol 20% refined from the wheat bran of oat or wheat, hydrated barta 2%, ethanol 8%.
Cardanol after testing moisture and ash content qualified after, put into reactor, add hydrated barta catalysis while being warming up to 40 ℃～50 ℃, cardanol under alkaline condition the high temperature autohemagglutination to 9--10 ten thousand MPas; Continue to be warming up to 100 ℃～110 ℃ of temperature, insulation 0.5-1 hour, continue to be warming up to 280 ℃～330 ℃, insulation 1.5-3 hour; Then be down to 40 ℃～50 ℃ and adjust pH value to 4.5--5.5, add furfuryl alcohol, temperature rises to 80 ℃～110 ℃, insulation 0.5-1.5 hour; Then temperature is down to 40 ℃～50 ℃ and is added ethanol to adjust pH value to 7--8, then debugs viscosity, makes product.Subsequently product is carried out to every characterization test, result proves desired product.
The present invention is at present for casting various larger steel castings, and the present invention and other various Casting Technology parameters and performance comparison are as shown in the table:
Above embodiment is only unrestricted in order to technical scheme of the present invention to be described, all any modifications of doing in the spirit and principles in the present invention, is equal to and replaces or improvement etc., all should be included in protection scope of the present invention.
Claims (10)
1. an acid cure environment-friendly type binding agent, is characterized in that, comprises the plant phenols of extracting from natural resource, the furfuryl alcohol extracted from natural resource, highly basic class catalyzer and inert solvent,
The described furfuryl alcohol extracted from natural resource is selected from the furfuryl alcohol extracted from wheat bran, bagasse or the wood sawdust of corn cob, oat or wheat,
Described inert solvent is one or more combinations in glycol, diol, derivatives, ester, water or ethanol,
Its component formula is counted with weight percent: plant phenols 50%～70%, and furfuryl alcohol 20%～40%, catalyzer 2%～10%, inert solvent 8%～20%,
Described binding agent is not containing free formaldehyde and phenol.
2. acid cure environment-friendly type binding agent according to claim 1, it is characterized in that: described plant phenols is Eugenol.
3. acid cure environment-friendly type binding agent according to claim 1, it is characterized in that: described plant phenols is methyl catechol.
4. acid cure environment-friendly type binding agent according to claim 1, it is characterized in that: described plant phenols is cardanol.
5. acid cure environment-friendly type binding agent according to claim 1, it is characterized in that: the described furfuryl alcohol extracted from natural resource is the furfuryl alcohol extracted in corn cob.
6. acid cure environment-friendly type binding agent according to claim 1, is characterized in that: the described furfuryl alcohol extracted from natural resource, the furfuryl alcohol extracted in the wheat bran for oat or wheat.
7. acid cure environment-friendly type binding agent according to claim 1, it is characterized in that: described catalyzer is potassium hydroxide and/or hydrated barta.
8. acid cure environment-friendly type binding agent according to claim 1, it is characterized in that: described inert solvent is ethanol.
9. acid cure environment-friendly type binding agent according to claim 1, it is characterized in that: described inert solvent is water.
10. the preparation method of an acid cure environment-friendly type binding agent comprises the following steps:
Step 1: take starting material by weight percent claimed in claim 1,
Step 2: plant phenols is added in reactor, adds catalyzer while being warming up to 40 ℃～60 ℃,
Step 3: be warming up to 100 ℃～120 ℃ of temperature, insulation 0.5-1.5 hour, continue to be warming up to 280 ℃～350 ℃, insulation 1.5-3.5 hour,
Step 4: temperature is down to 40 ℃～60 ℃, adjusts pH value to 4～5.5, adds furfuryl alcohol, and temperature rises to 80 ℃～110 ℃, insulation 0.5-1.5 hour,
Step 5: temperature is down to 40 ℃～60 ℃, adds inert solvent to adjust pH value to 6--8, then debugs viscosity.
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| CN103421419B (en) * | 2013-08-16 | 2015-10-14 | 石家庄世易糠醛糠醇有限公司 | A kind of preparation method of high-performance furans Marine Antifouling Paint |
| CN103409096B (en) * | 2013-08-16 | 2014-10-15 | 石家庄世易糠醛糠醇有限公司 | Preparation method of environmentally-friendly formaldehyde-free wood special-purpose resin adhesive |
| CN103805302A (en) * | 2013-12-20 | 2014-05-21 | 广西柳州浚业科技有限公司 | Environment-friendly industrial briquette composite binder and preparation method thereof |
| CN104264443B (en) * | 2014-10-11 | 2016-06-01 | 浙江建中竹业科技有限公司 | The production method with health care bamboo fibre fabric is spun by a kind of family |
| CN104264444B (en) * | 2014-10-11 | 2016-06-01 | 浙江建中竹业科技有限公司 | A kind of health care bamboo fibre fabric |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176114A (en) * | 1978-01-24 | 1979-11-27 | C L Industries, Inc. | Process for manufacturing sand cores or molds |
| CN101121191A (en) * | 2007-09-26 | 2008-02-13 | 济南圣泉集团股份有限公司 | Casting core sand synthetic resin adhesive |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176114A (en) * | 1978-01-24 | 1979-11-27 | C L Industries, Inc. | Process for manufacturing sand cores or molds |
| CN101121191A (en) * | 2007-09-26 | 2008-02-13 | 济南圣泉集团股份有限公司 | Casting core sand synthetic resin adhesive |
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Owner name: BANGNI CHEMICAL (TIANJIN) CO., LTD. Free format text: FORMER OWNER: WANG HAIJIANG Effective date: 20140605 |
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Effective date of registration: 20140605 Address after: 100022, B, block 5, tower 1214, the first city, No. 36, Grand Canal Road, Beijing, Chaoyang District Patentee after: Bonny chemicals (Tianjin) Ltd Address before: 100025, Beijing, Chaoyang District, ten miles north Fort, 17 floor, 5 door, No. 55 Patentee before: Wang Haijiang |