CN107282868A - A kind of preparation method cast with antistatic furan resin-sand - Google Patents
A kind of preparation method cast with antistatic furan resin-sand Download PDFInfo
- Publication number
- CN107282868A CN107282868A CN201710480994.5A CN201710480994A CN107282868A CN 107282868 A CN107282868 A CN 107282868A CN 201710480994 A CN201710480994 A CN 201710480994A CN 107282868 A CN107282868 A CN 107282868A
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- China
- Prior art keywords
- sand
- furan resin
- preparation
- rotating speed
- antistatic
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
- B22C1/22—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
- B22C1/2233—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- B22C1/224—Furan polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
- B22C5/0409—Blending, mixing, kneading or stirring; Methods therefor
Abstract
The invention discloses a kind of preparation method cast with antistatic furan resin-sand, comprise the following steps：（1）According to mass ratio 100:1.5‑2.5:0.3‑0.5:0.1 0.3 weigh matrix sand material, modified furan resin, curing agent and auxiliary agent；（2）Matrix sand material is added in puddle mixer；Curing agent is added, 40 60s of stirring mixing, then add auxiliary agent under 1500 2500r/min rotating speed, 30 50s of stirring mixing under 1000 2000r/min rotating speed, modified furan resin is eventually adding, 20 40s of stirring mixing, shake out under 2000 3000r/min rotating speed.The resin sand prepared using the modified furane resins of the present invention is compared with conventional furan resin sand, not only with excellent antistatic property, also with high mechanical strength, good toughness, and heat endurance is good, toxic gas burst size is small, type（Core）Sand adhesion strength is high, type（Core）The advantages of sand up time is long.The addition of auxiliary agent of the present invention, can not only increase sand mold（Core）Toughness, can also improve sand mold（Core）Intensity, reduces the consumption of furane resins.
Description
Technical field
The present invention relates to a kind of preparation method of resin casting, and in particular to antistatic furane resins are used in one kind casting
The preparation method of sand.
Background technology
Furan resin-sand is, using furane resins as binding agent, and to add the type that curing agent is blended（Core）Sand.Furan resin-sand
Casting technique has lot of advantages, such as：Cast(ing) surface is bright and clean, corner angle are clear, dimensional accuracy is high；Moulding efficiency high, improves life
Efficiency and utilization of area rate are produced, the production cycle is shortened；Reduce labor intensity, substantially improve working condition and working environment,
Noise, silica dust etc. are especially alleviated, environmental pollution is reduced；The energy is saved, the yield rate of casting is improved；Old sand reclaiming
Easily etc..Furan resin-sand casting technique is widely used in terms of cast iron, cast steel, non-ferrous metals casting production.But, use
Traditional furane resins encounter some technical problems in Foundry Production：Fragility is big, poor toughness, poisonous irritative gas（Trip
From formaldehyde）Burst size is big, type（Core）The sand up time is short；Have the shortcomings that antistatic property is poor simultaneously, in sand mold die cavity
Wall easily adsorbs dust granule, so as to influence the surface quality of casting；These problems have impact on furan resin-sand technique in casting
Application in production.Therefore, it is badly in need of a kind of furan resin-sand of high comprehensive performance of research, to solve the above problems.
The content of the invention
In order to solve the defect of prior art, antistatic furan resin-sand is used it is an object of the invention to provide one kind casting
Preparation method, furan resin-sand produced by the present invention not only have excellent antistatic property, also with mechanical strength
Height, good toughness, heat endurance is good, toxic gas burst size is small, type（Core）Sand adhesion strength is high, type（Core）The sand up time is long
The advantages of.
To achieve the above object, the present invention is adopted the following technical scheme that：
A kind of preparation method cast with antistatic furan resin-sand, comprises the following steps：
（1）According to mass ratio 100:1.5-2.5:0.3-0.5:0.1-0.3 weighs matrix sand material, modified furan resin, curing agent
And auxiliary agent；
（2）Matrix sand material is added in puddle mixer；Curing agent is added, the stirring mixing 40- under 1500-2500r/min rotating speed
60s, then adds auxiliary agent, and stirring mixing 30-50s, is eventually adding modified furan resin under 1000-2000r/min rotating speed,
Stirring mixing 20-40s, shakes out under 2000-3000r/min rotating speed.
Described matrix sand material is selected from quartz sand, zircon sand, magnesite clinker, chromite sand, forsterite sand, aquamaine stone sand, stone
One kind in grey stone sand, graphite sand, nice foundry sand, Task-size Controlling is at 10-20 μm.
The preparation method of the modified furan resin is as follows：
（1）According to mol ratio 1:2.5-3:0.2-0.3:0.8-1:0.4-0.5:0.02-0.03:0.0035-0.004 weighs urine
Element, formaldehyde, phenol, furfuryl alcohol, polyadipate neopentyl glycol -1,6- hexylene glycol esterdiol, melamine and CNT, it is stand-by；
（2）Polyadipate neopentyl glycol -1,6- hexylene glycol esterdiol and CNT is well mixed, be then with mass concentration
20% hydrochloric acid solution regulation pH=4-5, high speed machine stirs 1-2h under 5000-6000r/min rotating speed, then adds chaff
Alcohol, then in 300-400W power, ultrasonic disperse 40-60min at a temperature of 70-80 DEG C, produce dispersion liquid；
（3）By urea, formaldehyde, phenol mix, at 40-50 DEG C with mass fraction for 15% sodium hydrate aqueous solution regulation pH=
7.8-8.2, then it is warming up to 70-80 DEG C, constant temperature stirring reaction 20-30min, then it is warming up to 100-110 DEG C, constant temperature stirring reaction 1-
1.5h；Then step is added（2）Obtained dispersion liquid and melamine, then with mass fraction for 10% oxalic acid solution adjust pH=
4.5-5.5, it is brought rapidly up to 105-115 DEG C, flow back 1-2h, vacuum dehydration to viscosity is 115-125mPaS, is cooled to 40-
45 DEG C.
The curing agent is in phosphoric acid, oxalic acid, xylene monosulfonic acid, p-methyl benzenesulfonic acid, ethyl-sulfate, dimethyl suflfate
It is one or more.
The auxiliary agent be by triphenyl phosphate, diisononyl phthalate, triacetyl glycerine, N- β-(aminoethyl)-
γ-aminopropyltriethoxy dimethoxysilane is according to mass ratio 3-6:2-4:1-2:0.5-1 is mixed.
Beneficial effects of the present invention：
The present invention is using polyadipate neopentyl glycol -1,6-HD esterdiol, CNT, phenol and trimerization melamine pair
Furane resins progress is composite modified, can improve the toughness of furane resins, improves the mechanical strength and impact resistance of furane resins,
The free formaldehyde content of furane resins can also be reduced, the resin sand prepared using the furane resins of the modification and conventional furan tree
Fat sand facies compare, not only with excellent antistatic property, also with high mechanical strength, good toughness, and heat endurance is good, have
Poisonous gas burst size is small, type（Core）Sand adhesion strength is high, type（Core）The advantages of sand up time is long.Auxiliary agent of the present invention plus
Enter, can not only increase sand mold（Core）Toughness, can also improve sand mold（Core）Intensity, reduces the consumption of furane resins.
Embodiment
Embodiment 1
A kind of preparation method cast with antistatic furan resin-sand, comprises the following steps：
（1）According to mass ratio 100:1.5:0.3:0.1 weighs magnesite clinker, modified furan resin, xylene monosulfonic acid and auxiliary agent；
（2）Magnesite clinker is added in puddle mixer；Xylene monosulfonic acid is added, the stirring mixing 60s under 1500r/min rotating speed,
Then auxiliary agent is added, stirring mixing 50s, is eventually adding modified furan resin, in 2000r/min under 1000r/min rotating speed
Rotating speed under stirring mixing 40s, shake out.
The magnesite clinker granularity is 10 μm.
The preparation method of the modified furan resin is as follows：
（1）According to mol ratio 1:2.5:0.2:0.8:0.4:0.02:0.0035 weigh urea, formaldehyde, phenol, furfuryl alcohol, gather oneself two
Sour neopentyl glycol -1,6- hexylene glycol esterdiol, melamine and CNT, it is stand-by；
（2）Polyadipate neopentyl glycol -1,6- hexylene glycol esterdiol and CNT is well mixed, be then with mass concentration
20% hydrochloric acid solution regulation pH=4, high speed machine stirs 2h under 5000r/min rotating speed, then adds furfuryl alcohol, then 300
Power, ultrasonic disperse 60min at a temperature of 70 DEG C, produce dispersion liquid；
（3）By urea, formaldehyde, phenol mix, at 40- DEG C with mass fraction for 15% sodium hydrate aqueous solution regulation pH=
7.8, then it is warming up to 70 DEG C, constant temperature stirring reaction 30min, then it is warming up to 100 DEG C, constant temperature stirring reaction 1.5h；Then step is added
Suddenly（2）Obtained dispersion liquid and melamine, then with mass fraction for 10% oxalic acid solution adjust pH=4.5, be brought rapidly up to
105 DEG C, flow back 2h, and vacuum dehydration to viscosity is 115mPaS, is cooled to 40 DEG C.
The auxiliary agent be by triphenyl phosphate, diisononyl phthalate, triacetyl glycerine, N- β-(aminoethyl)-
γ-aminopropyltriethoxy dimethoxysilane is according to mass ratio 3:2:1:0.5 mixes.
Embodiment 2
A kind of preparation method cast with antistatic furan resin-sand, comprises the following steps：
（1）According to mass ratio 100:2:0.4:0.2 weighs graphite sand, modified furan resin, curing agent and auxiliary agent；
（2）Graphite sand is added in puddle mixer；Curing agent is added, the stirring mixing 50s, Ran Houjia under 2000r/min rotating speed
Enter auxiliary agent, stirring mixing 40s, is eventually adding modified furan resin, in 2500r/min rotating speed under 1500r/min rotating speed
Lower stirring mixing 30s, shakes out.
The graphite fineness of sand is 15 μm.
The preparation method of the modified furan resin is as follows：
（1）According to mol ratio 1:2.8:0.25:0.9:0.45:0.025:0.0038 weigh urea, formaldehyde, phenol, furfuryl alcohol, gather oneself
Diacid neopentyl glycol -1,6- hexylene glycol esterdiol, melamine and CNT, it is stand-by；
（2）Polyadipate neopentyl glycol -1,6- hexylene glycol esterdiol and CNT is well mixed, be then with mass concentration
20% hydrochloric acid solution regulation pH=4.5, high speed machine stirs 1.5h under 5500r/min rotating speed, then adds furfuryl alcohol, then
350W power, ultrasonic disperse 50min at a temperature of 75 DEG C, produce dispersion liquid；
（3）By urea, formaldehyde, phenol mix, at 45 DEG C with mass fraction for 15% sodium hydrate aqueous solution regulation pH=
8.0, then it is warming up to 75 DEG C, constant temperature stirring reaction 25min, then it is warming up to 105 DEG C, constant temperature stirring reaction 1h；Then step is added
（2）Obtained dispersion liquid and melamine, then pH=5.0 are adjusted with the oxalic acid solution that mass fraction is 10%, it is brought rapidly up to 110
DEG C, flow back 1.5h, and vacuum dehydration to viscosity is 120mPaS, is cooled to 42 DEG C.
The curing agent is made up of phosphoric acid and ethyl-sulfate, and the mass ratio of phosphoric acid, ethyl-sulfate between the two is 4:1.
The auxiliary agent be by triphenyl phosphate, diisononyl phthalate, triacetyl glycerine, N- β-(aminoethyl)-
γ-aminopropyltriethoxy dimethoxysilane is according to mass ratio 3:3:1.5:0.8 mixes.
Embodiment 3
A kind of preparation method cast with antistatic furan resin-sand, comprises the following steps：
（1）According to mass ratio 100:2.5:0.5:0.3 weighs forsterite sand, modified furan resin, curing agent and auxiliary agent；
（2）Forsterite sand is added in puddle mixer；Curing agent is added, the stirring mixing 40s under 2500r/min rotating speed, so
After add auxiliary agent, under 2000r/min rotating speed stirring mixing 30s, modified furan resin is eventually adding, 3000r/min's
Stirring mixing 20s, shakes out under rotating speed.
The forsterite fineness of sand is 20 μm.
The preparation method of the modified furan resin is as follows：
（1）According to mol ratio 1:3:0.3:1:0.5:0.03:0.004 weighs urea, formaldehyde, phenol, furfuryl alcohol, polyadipate new penta
Glycol -1,6- hexylene glycol esterdiol, melamine and CNT, it is stand-by；
（2）Polyadipate neopentyl glycol -1,6- hexylene glycol esterdiol and CNT is well mixed, be then with mass concentration
20% hydrochloric acid solution regulation pH=5, high speed machine stirs 1h under 6000r/min rotating speed, then adds furfuryl alcohol, then in 400W
Power, ultrasonic disperse 40min at a temperature of 80 DEG C, produce dispersion liquid；
（3）By urea, formaldehyde, phenol mix, at 50 DEG C with mass fraction for 15% sodium hydrate aqueous solution regulation pH=
8.2, then it is warming up to 80 DEG C, constant temperature stirring reaction 20min, then it is warming up to 110 DEG C, constant temperature stirring reaction 1h；Then step is added
（2）Obtained dispersion liquid and melamine, then pH=5.5 are adjusted with the oxalic acid solution that mass fraction is 10%, it is brought rapidly up to 115
DEG C, flow back 1h, and vacuum dehydration to viscosity is 125mPaS, is cooled to 45 DEG C.
The curing agent is made up of oxalic acid, p-methyl benzenesulfonic acid and dimethyl suflfate.Oxalic acid, p-methyl benzenesulfonic acid, dimethyl sulfate
Mass ratio between ester three is 3:2:1.
The auxiliary agent be by triphenyl phosphate, diisononyl phthalate, triacetyl glycerine, N- β-(aminoethyl)-
γ-aminopropyltriethoxy dimethoxysilane is according to mass ratio 6:4:2:1 mixes.
Claims (5)
1. a kind of preparation method cast with antistatic furan resin-sand, it is characterised in that comprise the following steps：
（1）According to mass ratio 100:1.5-2.5:0.3-0.5:0.1-0.3 weighs matrix sand material, modified furan resin, curing agent
And auxiliary agent；
（2）Matrix sand material is added in puddle mixer；Curing agent is added, the stirring mixing 40- under 1500-2500r/min rotating speed
60s, then adds auxiliary agent, and stirring mixing 30-50s, is eventually adding modified furan resin under 1000-2000r/min rotating speed,
Stirring mixing 20-40s, shakes out under 2000-3000r/min rotating speed.
2. a kind of preparation method cast with antistatic furan resin-sand according to claim 1, it is characterised in that described
Matrix sand material is selected from quartz sand, zircon sand, magnesite clinker, chromite sand, forsterite sand, aquamaine stone sand, limestone sand, graphite
One kind in sand, nice foundry sand, Task-size Controlling is at 10-20 μm.
3. a kind of preparation method cast with antistatic furan resin-sand according to claim 1, it is characterised in that described
The preparation method of modified furan resin is as follows：
（1）According to mol ratio 1:2.5-3:0.2-0.3:0.8-1:0.4-0.5:0.02-0.03:0.0035-0.004 weighs urine
Element, formaldehyde, phenol, furfuryl alcohol, polyadipate neopentyl glycol -1,6- hexylene glycol esterdiol, melamine and CNT, it is stand-by；
（2）Polyadipate neopentyl glycol -1,6- hexylene glycol esterdiol and CNT is well mixed, be then with mass concentration
20% hydrochloric acid solution regulation pH=4-5, high speed machine stirs 1-2h under 5000-6000r/min rotating speed, then adds chaff
Alcohol, then in 300-400W power, ultrasonic disperse 40-60min at a temperature of 70-80 DEG C, produce dispersion liquid；
（3）By urea, formaldehyde, phenol mix, at 40-50 DEG C with mass fraction for 15% sodium hydrate aqueous solution regulation pH=
7.8-8.2, then it is warming up to 70-80 DEG C, constant temperature stirring reaction 20-30min, then it is warming up to 100-110 DEG C, constant temperature stirring reaction 1-
1.5h；Then step is added（2）Obtained dispersion liquid and melamine, then with mass fraction for 10% oxalic acid solution adjust pH=
4.5-5.5, is brought rapidly up to 105-115 DEG C, and flow back 1-2h, and vacuum dehydration to viscosity is 115-125mPaS, is cooled to 40-
45 DEG C.
4. a kind of preparation method cast with antistatic furan resin-sand according to claim 1, it is characterised in that described
One or more of the curing agent in phosphoric acid, oxalic acid, xylene monosulfonic acid, p-methyl benzenesulfonic acid, ethyl-sulfate, dimethyl suflfate.
5. a kind of preparation method cast with antistatic furan resin-sand according to claim 1, it is characterised in that described
Auxiliary agent is by triphenyl phosphate, diisononyl phthalate, triacetyl glycerine, N- β-(aminoethyl)-γ-aminopropyltriethoxy
Dimethoxysilane is according to mass ratio 3-6:2-4:1-2:0.5-1 is mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710480994.5A CN107282868A (en) | 2017-06-22 | 2017-06-22 | A kind of preparation method cast with antistatic furan resin-sand |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710480994.5A CN107282868A (en) | 2017-06-22 | 2017-06-22 | A kind of preparation method cast with antistatic furan resin-sand |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526385A (en) * | 2018-04-12 | 2018-09-14 | 盐城仁创砂业科技有限公司 | A kind of elimination electrostatic precoated sand and preparation method thereof |
| CN110560628A (en) * | 2019-08-30 | 2019-12-13 | 宁夏共享化工有限公司 | Curing agent for self-hardening furan resin and preparation method thereof |
| CN110653332A (en) * | 2019-09-30 | 2020-01-07 | 宁夏共享化工有限公司 | Furan resin for casting and preparation method thereof |
| CN111375726A (en) * | 2020-04-08 | 2020-07-07 | 四川东树新材料有限公司 | Low free acid sulfonic acid curing agent and production method thereof |
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| CN105108045A (en) * | 2015-08-11 | 2015-12-02 | 安徽省胜峰机械有限公司 | 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 (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526385A (en) * | 2018-04-12 | 2018-09-14 | 盐城仁创砂业科技有限公司 | A kind of elimination electrostatic precoated sand and preparation method thereof |
| CN108526385B (en) * | 2018-04-12 | 2019-11-01 | 盐城仁创砂业科技有限公司 | A kind of elimination electrostatic precoated sand and preparation method thereof |
| CN110560628A (en) * | 2019-08-30 | 2019-12-13 | 宁夏共享化工有限公司 | Curing agent for self-hardening furan resin and preparation method thereof |
| CN110560628B (en) * | 2019-08-30 | 2021-08-31 | 宁夏共享化工有限公司 | Preparation method of curing agent for self-hardening furan resin |
| CN110653332A (en) * | 2019-09-30 | 2020-01-07 | 宁夏共享化工有限公司 | Furan resin for casting and preparation method thereof |
| CN110653332B (en) * | 2019-09-30 | 2021-05-11 | 宁夏共享化工有限公司 | Preparation method of furan resin for casting |
| CN111375726A (en) * | 2020-04-08 | 2020-07-07 | 四川东树新材料有限公司 | Low free acid sulfonic acid curing agent and production method thereof |
| CN111375726B (en) * | 2020-04-08 | 2021-04-13 | 四川东树新材料有限公司 | Low free acid sulfonic acid curing agent and production method thereof |
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Application publication date: 20171024 |
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