CN105108045A - Chopped carbon fiber containing and reinforced type modified furan resin sand for steel casting and preparation method of resin sand - Google Patents
Chopped carbon fiber containing and reinforced type modified furan resin sand for steel casting and preparation method of resin sand Download PDFInfo
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- CN105108045A CN105108045A CN201510486779.7A CN201510486779A CN105108045A CN 105108045 A CN105108045 A CN 105108045A CN 201510486779 A CN201510486779 A CN 201510486779A CN 105108045 A CN105108045 A CN 105108045A
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Abstract
The invention discloses chopped carbon fiber containing and reinforced type modified furan resin sand for steel casting. The resin sand is that mullite sand, quartz sand, bauxite and micro-porous calcium silicate which have different particle size and different ratio are treated as molding sand materials, and the molding sand materials are poured at high temperature so as to enable high breathability as well as resistance to heat and corrosion; nano-tourmaline powder is added to further improve the breathability of molding sand. Compared with the traditional furan resin, the prepared modified furan resin adhesive containing chopped carbon fibers has the advantages of being small in gas forming amount, small in residual organic matters, low in viscosity high in adhering performance, and high in strength; the utilization rate is improved, and the dosage is reduced. The prepared molding sand is high in mobility, high in strength, and difficult to deform; the quality of the prepared steel casting parts can be effectively improved, and thus the yield is increased.
Description
Technical field
The present invention relates to cast steel molding sand manufacturing technology field, particularly relate to a kind of steel-casting modified furan resin sand strengthened containing chopped carbon fiber and preparation method thereof.
Background technology
The quality of foundry goods is directly connected in the quality of the casting process Sand of steel part, molding sand is mainly mixed according to different ratios by Modeling Materials such as sand material, bonding agent and adminiclies, bonding agent is wherein the important Modeling Material of a class, the height of its comprehensive quality is directly connected to surface quality and the inherent quality of foundry goods, and current the most widely used bonding agent is mainly with clay-bonded sand, the water-glass sand inorganic adhesive that is representative and take furane resins as the resin adhesive of representative.
The advantages such as it is good that furan resin-sand has casting quality, and percent defective is low, but still there is a lot of defect in it, needs to set about in its synthesis material and preparation technology etc. in actual production, improves its performance.Mainly there is following problem in furan resin-sand: gas forming amount is high, causes high, the high utilization rate of bleb rate to cause the easy hot tearing of foundry goods, poor fluidity, depot difference, residues of formaldehyde height etc.Therefore a kind of efficient, low toxicity of necessary development, effectively improve the modified furan resin sand of casting quality, to adapt to the fast-developing demand of industry.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of steel-casting modified furan resin sand with strengthening containing chopped carbon fiber and preparation method thereof.
The present invention is achieved by the following technical solutions:
The steel-casting modified furan resin sand strengthened containing chopped carbon fiber, this resin sand is prepared by the raw material of following weight portion: 60-80 order mullite sand 15-18,50-80 order quartz sand 30-40,80-100 order bauxite 8-10,150-200 order microporous calcium silicate 4-5, nano-tourmaline powder 0.1-0.2, polyamide wax powder 2-3, modified furan resin bonding agent 0.5-0.6, curing agent 0.2-0.3.
Described a kind of steel-casting modified furan resin sand strengthened containing chopped carbon fiber, described modified furan resin bonding agent is made up of the raw material of following weight portion: 37% formalin 15-20, urea 5-6, furfuryl alcohol 40-50, ferrocene 0.1-0.2, phenol 4-5,30% sodium hydrate aqueous solution appropriate, 10% hydrochloric acid solution is appropriate, Emulsifier EL-60 0.1-0.2, chopped carbon fiber 0.1-0.2, silane coupler kh5500.1-0.2, its preparation method is: first by phenol, the urea of 3-4 weight portion, Emulsifier EL-60 and formalin drop in reactor, stir after material being dissolved completely mix and add appropriate sodium hydrate aqueous solution, mixed liquor pH value is regulated to be 8.0-9.0, be heated to 90-100 DEG C subsequently, confined reaction 75-80min, the furfuryl alcohol of 30-40 weight portion is added after reaction terminates, and regulate pH value of reaction system to be 5.0-6.0 with hydrochloric acid solution, under 95-100 DEG C of condition, constant temperature continues reaction 80-90min, 60-70 DEG C is cooled to after reaction terminates, vacuum dehydration process, other leftover materials are added again after dehydration, after being fully uniformly mixed and get final product.
Described a kind of steel-casting preparation method of the modified furan resin sand strengthened containing chopped carbon fiber, described preparation method is: first mullite sand, quartz sand, bauxite are added curing agent after dropping into and mixing in puddle mixer, be uniformly mixed 4-5min, then modified furan resin bonding agent is added, continue to be uniformly mixed 5-8min, finally add other leftover materials again, shake out after being uniformly mixed 8-10min and get final product.
Advantage of the present invention is: select the mullite sand of different-grain diameter, different ratio, quartz sand, bauxite and microporous calcium silicate as moulding sand material, good permeability after high temperature cast, heatproof corrosion resistant, the interpolation of nano-tourmaline powder enhances type sand permeability further, and the modified furan resin bonding agent containing chopped carbon fiber of preparation has the advantages such as gas forming amount is low, organic substance residues is few, viscosity is low, bonding force is strong, intensity is large compared with traditional furane resins, utilization rate is higher, and consumption is less; The sand fluidity prepared is good, intensity is high, not yielding, and the steel casting quality obtained effectively is improved, and yield rate is higher.
Detailed description of the invention
The steel-casting modified furan resin sand strengthened containing chopped carbon fiber, this resin sand is prepared by the raw material of following weight portion: 60 order mullite sand 15,50 order quartz sand 30,80 order bauxite 8,150 order microporous calcium silicates 4, nano-tourmaline powder 0.1, polyamide wax powder 2, modified furan resin bonding agent 0.5, curing agent 0.2.
Described modified furan resin bonding agent is made up of the raw material of following weight portion: the sodium hydrate aqueous solution of 37% formalin 15, urea 5, furfuryl alcohol 40, ferrocene 0.1, phenol 4,30% is appropriate, 10% hydrochloric acid solution is appropriate, Emulsifier EL-60 0.1, chopped carbon fiber 0.1, silane coupler kh5500.1, its preparation method is: first by phenol, the urea of 3 weight portions, Emulsifier EL-60 and formalin drop in reactor, stir after material being dissolved completely mix and add appropriate sodium hydrate aqueous solution, mixed liquor pH value is regulated to be 8.0, be heated to 90 DEG C subsequently, confined reaction 75min, the furfuryl alcohol of 30 weight portions is added after reaction terminates, and regulate pH value of reaction system to be 5.0 with hydrochloric acid solution, under 95 DEG C of conditions, constant temperature continues reaction 80min, 60 DEG C are cooled to after reaction terminates, vacuum dehydration process, other leftover materials are added again after dehydration, after being fully uniformly mixed and get final product.
The preparation method of described resin sand is: first mullite sand, quartz sand, bauxite are added curing agent after dropping into and mixing in puddle mixer, be uniformly mixed 4min, then modified furan resin bonding agent is added, continue to be uniformly mixed 5min, finally add other leftover materials again, shake out after being uniformly mixed 8min and get final product.
The nitrogen content of the modified furan resin bonding agent obtained by the present embodiment is 4.1%, and free formaldehyde content is 0.05%, and viscosity is 24g/cm
3, the resin mass tensile strength after solidification can reach 2.5MPa.The casting yield being poured into a mould gained by this composite sand reaches more than 95%, and cast(ing) surface densification is bright and clean, and contraction cavity ratio is low, and size is accurate.
Claims (3)
1. the steel-casting modified furan resin sand strengthened containing chopped carbon fiber, it is characterized in that, this resin sand is prepared by the raw material of following weight portion: 60-80 order mullite sand 15-18,50-80 order quartz sand 30-40,80-100 order bauxite 8-10,150-200 order microporous calcium silicate 4-5, nano-tourmaline powder 0.1-0.2, polyamide wax powder 2-3, modified furan resin bonding agent 0.5-0.6, curing agent 0.2-0.3.
2. a kind of steel-casting modified furan resin sand strengthened containing chopped carbon fiber as claimed in claim 1, it is characterized in that, described modified furan resin bonding agent is made up of the raw material of following weight portion: 37% formalin 15-20, urea 5-6, furfuryl alcohol 40-50, ferrocene 0.1-0.2, phenol 4-5,30% sodium hydrate aqueous solution appropriate, 10% hydrochloric acid solution appropriate, Emulsifier EL-60 0.1-0.2, chopped carbon fiber 0.1-0.2, silane coupler kh5500.1-0.2, its preparation method is: first by phenol, the urea of 3-4 weight portion, Emulsifier EL-60 and formalin drop in reactor, stir after material being dissolved completely mix and add appropriate sodium hydrate aqueous solution, mixed liquor pH value is regulated to be 8.0-9.0, be heated to 90-100 DEG C subsequently, confined reaction 75-80min, the furfuryl alcohol of 30-40 weight portion is added after reaction terminates, and regulate pH value of reaction system to be 5.0-6.0 with hydrochloric acid solution, under 95-100 DEG C of condition, constant temperature continues reaction 80-90min, 60-70 DEG C is cooled to after reaction terminates, vacuum dehydration process, other leftover materials are added again after dehydration, after being fully uniformly mixed and get final product.
3. a kind of steel-casting as claimed in claim 1 preparation method of the modified furan resin sand strengthened containing chopped carbon fiber, it is characterized in that, described preparation method is: first mullite sand, quartz sand, bauxite are added curing agent after dropping into and mixing in puddle mixer, be uniformly mixed 4-5min, then modified furan resin bonding agent is added, continue to be uniformly mixed 5-8min, finally add other leftover materials again, shake out after being uniformly mixed 8-10min and get final product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510486779.7A CN105108045A (en) | 2015-08-11 | 2015-08-11 | Chopped carbon fiber containing and reinforced type modified furan resin sand for steel casting and preparation method of resin sand |
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| CN201510486779.7A CN105108045A (en) | 2015-08-11 | 2015-08-11 | Chopped carbon fiber containing and reinforced type modified furan resin sand for steel casting and preparation method of resin sand |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106001393A (en) * | 2016-06-22 | 2016-10-12 | 马鞍山市创诚铸造有限公司 | Environment-friendly foundry sand serving as binder and formed by modifying animal glue through chitosan and preparation method of environment-friendly foundry sand |
| CN107282868A (en) * | 2017-06-22 | 2017-10-24 | 安徽银力铸造有限公司 | A kind of preparation method cast with antistatic furan resin-sand |
| CN108568493A (en) * | 2018-05-11 | 2018-09-25 | 佛山市高明利钢精密铸造有限公司 | A kind of preparation method of moulding sand for casting |
| CN110899618A (en) * | 2019-11-01 | 2020-03-24 | 王海江 | Casting process method for improving appearance of casting sand grains and improving strength of sand mold |
| CN113279268A (en) * | 2021-04-20 | 2021-08-20 | 浙江天源网业有限公司 | Macromolecular large-mesh breathable rainproof mesh cloth and processing technology thereof |
| CN118122944A (en) * | 2024-03-20 | 2024-06-04 | 苏州兴业材料科技股份有限公司 | High-temperature-resistant bio-based furan resin binder and preparation method thereof |
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| JPS62142048A (en) * | 1985-12-13 | 1987-06-25 | Asahi Organic Chem Ind Co Ltd | Production of acid curing type organic self-curing sand |
| CN102380576A (en) * | 2011-11-03 | 2012-03-21 | 铜陵和武机械制造有限责任公司 | Mixed casting molding sand and preparation method thereof |
| CN103113548A (en) * | 2013-03-06 | 2013-05-22 | 苏州兴业材料科技股份有限公司 | Preparation method of novel modified furan resin for casting |
| CN103289037A (en) * | 2013-04-01 | 2013-09-11 | 黄石市汇波防腐技术有限公司 | Furan resin having a low formaldehyde content and good collapsibility used for casting |
| CN104107875A (en) * | 2014-07-30 | 2014-10-22 | 吴江市液铸液压件铸造有限公司 | Furan resin self-hardening sand and preparation method thereof |
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| JPS62142048A (en) * | 1985-12-13 | 1987-06-25 | Asahi Organic Chem Ind Co Ltd | Production of acid curing type organic self-curing sand |
| CN102380576A (en) * | 2011-11-03 | 2012-03-21 | 铜陵和武机械制造有限责任公司 | Mixed casting molding sand and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106001393A (en) * | 2016-06-22 | 2016-10-12 | 马鞍山市创诚铸造有限公司 | Environment-friendly foundry sand serving as binder and formed by modifying animal glue through chitosan and preparation method of environment-friendly foundry sand |
| CN107282868A (en) * | 2017-06-22 | 2017-10-24 | 安徽银力铸造有限公司 | A kind of preparation method cast with antistatic furan resin-sand |
| CN108568493A (en) * | 2018-05-11 | 2018-09-25 | 佛山市高明利钢精密铸造有限公司 | A kind of preparation method of moulding sand for casting |
| CN110899618A (en) * | 2019-11-01 | 2020-03-24 | 王海江 | Casting process method for improving appearance of casting sand grains and improving strength of sand mold |
| CN113279268A (en) * | 2021-04-20 | 2021-08-20 | 浙江天源网业有限公司 | Macromolecular large-mesh breathable rainproof mesh cloth and processing technology thereof |
| CN113279268B (en) * | 2021-04-20 | 2023-04-28 | 浙江天源网业有限公司 | Macromolecular large-mesh breathable rainwater-proof mesh cloth and processing technology thereof |
| CN118122944A (en) * | 2024-03-20 | 2024-06-04 | 苏州兴业材料科技股份有限公司 | High-temperature-resistant bio-based furan resin binder and preparation method thereof |
| CN118122944B (en) * | 2024-03-20 | 2024-10-11 | 苏州兴业材料科技股份有限公司 | High-temperature-resistant bio-based furan resin binder and preparation method thereof |
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Application publication date: 20151202 |