CN102532450A - Production method for quickly curing nitrogen-free furane resin - Google Patents
Production method for quickly curing nitrogen-free furane resin Download PDFInfo
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- CN102532450A CN102532450A CN2011104114031A CN201110411403A CN102532450A CN 102532450 A CN102532450 A CN 102532450A CN 2011104114031 A CN2011104114031 A CN 2011104114031A CN 201110411403 A CN201110411403 A CN 201110411403A CN 102532450 A CN102532450 A CN 102532450A
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Abstract
The invention relates to a production method for nitrogen-free furane resin, in particular to a production method for quickly curing nitrogen-free furane resin. The method is characterized in that: according to the method, phenol is added into a reaction kettle after being dissolved, a blender is started, formaldehyde water solution is added into the reaction kettle, and the pH value of the solution is regulated by alkali liquid; then a steam valve is opened, the temperature rises to 88-96 DEG C, and heat preservation is conducted in a timing way; after the heat preservation, the temperature is decreased to 90 DEG C, 15%-19% of furfuryl alcohol is added into the mixture, and then vacuum dehydration is conducted; 29%-30% of furfuryl alcohol is added into the mixture, and then the pH value is regulated by formic acid; the steam valve is opened to raise the temperature to 88-96 DEG C, and heat preservation is conducted in a timing way for 60-120 minutes; after the heat preservation, the temperature is reduced to 90 DEG C, then modifier is added into the mixture, and heat preservation is continued for 20-30 minutes; and when the temperature is reduced to 70 DEG C, 26%-28% of furfuryl alcohol and coupling agent are added into the mixture, the pH value is regulated by alkali, emptying is conducted after continuing to stirring the mixture for 15 minutes, and then the obtained product is stored in a warehouse. The method of the invention is unique, low in free aldehyde and high in strength, can realize quick curing, and is suitable for small-size and medium-size steel-casting pieces.
Description
Technical field
The present invention relates to a kind of working method of not having nitrogen furan resin, especially relate to the working method that a kind of fast setting does not have nitrogen furan resin.
Background technology
Furane resin through nearly 30 years popularization, have been used widely in China since the seventies in 20th century.But do not have nitrogen cast steel furane resin and have the shortcoming that viscosity is big, free formaldehyde is high, tensile strength is low, setting rate is slow always; In the time of in being applied to the production of single-piece mechanize flow line; Setting rate can't satisfy the flow line production requirement; When particularly north of china in winter temperature is on the low side, more be difficult to satisfy production requirement, thereby cause some casting flaws.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of method uniqueness is provided, can realizes that snap cure, low-free formaldehyde, the high-intensity a kind of fast setting that is applicable to that middle-size and small-size steel casting is used do not have the working method of nitrogen furan resin.
In order to realize goal of the invention, the present invention realizes through following mode:
A kind of fast setting does not have the working method of nitrogen furan resin, it is characterized in that: this method comprises the steps:
The weight percentage of raw material is: formalin: 17%-22% phenol: the 5%-10% furfuryl alcohol: 70%-77% properties-correcting agent: 0.2%-0.6% coupling agent 0.2%-0.8%
A. the phenol with said content melts in the back adding reaction kettle, starts stirrer, adds said formalin, with the pH value to 8-10 of alkali lye with feed liquid;
B. open steam valve, be warming up to 88-96 ℃ in 40-60 minutes, timing insulation 60-120 minute;
C. insulation finishes, and lowers the temperature 90 ℃, adds furfuryl alcohol 15%-19%, vacuum hydro-extraction, and dehydrating amount is 70% of a formalin weight;
D. after dehydration finishes, add furfuryl alcohol 29%-30%, transfer pH value to 4.5-5.5 with formic acid;
E. open steam valve, be warming up to 88-96 ℃ in 30-40 minutes, timing insulation 60-120 minute;
F. insulation finishes, and is cooled to 90 ℃, adds the properties-correcting agent of said content, continues insulation 20-30 minute;
When g. being cooled to 70 ℃, add furfuryl alcohol 26%-28%, the coupling agent of said content adds alkali and transfers pH value to 6-7.5, continues to stir blowing after 15 minutes;
H. packing warehouse-in: the testing laboratory check is sent in sampling below 40 ℃ the time, detects qualified after, metering packing is put in storage;
Said properties-correcting agent is urea, and said coupling agent is silane coupling agent Z-6040.
The present invention has following effect:
1) method unique, can realize snap cure, low-free formaldehyde: method provided by the invention adds in the reaction kettle for melting phenol earlier, starts stirrer, and the adding formalin with the pH value to 8-10 of alkali lye with feed liquid, is opened steam valve; Be warming up to 88-96 ℃ in 40-60 minutes, timing insulation 60-120 minute, insulation finishes, and lowers the temperature 90 ℃; Add furfuryl alcohol, vacuum hydro-extraction, dehydrating amount is 70% of a formalin weight, after dehydration finishes; Add furfuryl alcohol, transfer pH value to 4.5-5.5, open steam valve, be warming up to 88-96 ℃ in 30-40 minutes with formic acid; Timing insulation 60-120 minute, insulation finishes, and is cooled to 90 ℃, adds properties-correcting agent 0.2%-0.6%; Continue insulation 20-30 minute, when being cooled to 70 ℃, add furfuryl alcohol, coupling agent; Add alkali and transfer pH value to 6-7.5, continue to stir blowing after 15 minutes, packing is put in storage at last, thereby realizes snap cure, low-free formaldehyde, HS.
2) improved production efficiency: method provided by the invention has realized the snap cure of furane resin under the prerequisite of using same model solidifying agent; Be only to use a kind of solidifying agent under the differing temps; Only depend on adjusting solidifying agent add-on can realize fast setting, improved moulding production efficiency greatly.At present product in Lanzhou state-owned steel foundry come into operation, client only uses GH05A type solidifying agent throughout the year, facts have proved that use characteristics is good.
Embodiment
Embodiment one: a kind of fast setting does not have the working method of nitrogen furan resin, and this method comprises the steps:
A, the phenol of content 5% is melted the back add in the reaction kettle, start stirrer, add formalin 20.3%, with the pH value to 8.8-9.0 of alkali lye with feed liquid;
B, open steam valve, be warming up to 92-94 ℃ in 40-60 minutes, timing insulation 90 minutes;
C, insulation finish, and lower the temperature 90 ℃, add furfuryl alcohol 19%, vacuum hydro-extraction, and dehydrating amount is 70% of a formalin weight;
After d, dehydration finish, add furfuryl alcohol 30%, transfer pH value to 4.5-4.8 with formic acid;
E, open steam valve, be warming up to 90-92 ℃ in 30-40 minutes, timing insulation 70 minutes;
F, insulation finish, and are cooled to 90 ℃, add properties-correcting agent 0.2%, continue insulation 20 minutes;
G, when being cooled to 70 ℃, add furfuryl alcohol 28%, coupling agent 0.3% adds alkali and transfers pH value to 6-7.5, continues to stir blowing after 15 minutes;
H, packing warehouse-in: the testing laboratory check is sent in sampling below 40 ℃ the time, detects qualified after, metering packing is put in storage.
Embodiment two: a kind of fast setting does not have the working method of nitrogen furan resin, and this method comprises the steps:
A, the phenol of content 10% is melted the back add in the reaction kettle, start stirrer, add formalin 22%, with the pH value to 8-8.5 of alkali lye with feed liquid;
B, open steam valve, be warming up to 88-90 ℃ in 40-60 minutes, timing insulation 70 minutes;
C, insulation finish, and lower the temperature 90 ℃, add furfuryl alcohol 15%, vacuum hydro-extraction, and dehydrating amount is 70% of a formalin weight;
After d, dehydration finish, add furfuryl alcohol 29%, transfer pH value to 5.0-5.5 with formic acid;
E, open steam valve, be warming up to 94-96 ℃ in 30-40 minutes, timing insulation 90 minutes;
F, insulation finish, and are cooled to 90 ℃, add properties-correcting agent 0.3%, continue insulation 30 minutes;
G, when being cooled to 70 ℃, add furfuryl alcohol 26%, coupling agent 0.5% adds alkali and transfers pH value to 6-7.5, continues to stir blowing after 15 minutes;
H, packing warehouse-in: the testing laboratory check is sent in sampling below 40 ℃ the time, detects qualified after, metering packing is put in storage.
Embodiment three: a kind of fast setting does not have the working method of nitrogen furan resin, and this method comprises the steps:
A, be that 9.3% phenol melts and adds in the reaction kettle, start stirrer, add formalin 17%, with the pH value to 8-8.5 of alkali lye with feed liquid with content;
B, open steam valve, be warming up to 88-90 ℃ in 40-60 minutes, timing insulation 70 minutes;
C, insulation finish, and lower the temperature 90 ℃, add furfuryl alcohol 18.5%, vacuum hydro-extraction, and dehydrating amount is 70% of a formalin weight;
After d, dehydration finish, add furfuryl alcohol 29.5%, transfer pH value to 5.0-5.5 with formic acid;
E, open steam valve, be warming up to 94-96 ℃ in 30-40 minutes, timing insulation 90 minutes;
F, insulation finish, and are cooled to 90 ℃, add properties-correcting agent 0.3%, continue insulation 30 minutes;
G, when being cooled to 70 ℃, add furfuryl alcohol 27.6%, coupling agent 0.6% adds alkali and transfers pH value to 6-7.5, continues to stir blowing after 15 minutes;
H, packing warehouse-in: the testing laboratory check is sent in sampling below 40 ℃ the time, detects qualified after, metering packing is put in storage.
Claims (2)
1. a fast setting does not have the working method of nitrogen furan resin, and it is characterized in that: this method comprises the steps:
The weight percentage of raw material is: formalin: 17%-22% phenol: the 5%-10% furfuryl alcohol: 70%-77% properties-correcting agent: 0.2%-0.6% coupling agent 0.2%-0.8%
A. the phenol with said content melts in the back adding reaction kettle, starts stirrer, adds said formalin, with the pH value to 8-10 of alkali lye with feed liquid;
B. open steam valve, be warming up to 88-96 ℃ in 40-60 minutes, timing insulation 60-120 minute;
C. insulation finishes, and lowers the temperature 90 ℃, adds furfuryl alcohol 15%-19%, vacuum hydro-extraction, and dehydrating amount is 70% of a formalin weight;
D. after dehydration finishes, add furfuryl alcohol 29%-30%, transfer pH value to 4.5-5.5 with formic acid;
E. open steam valve, be warming up to 88-96 ℃ in 30-40 minutes, timing insulation 60-120 minute;
F. insulation finishes, and is cooled to 90 ℃, adds the properties-correcting agent of said content, continues insulation 20-30 minute;
When g. being cooled to 70 ℃, add furfuryl alcohol 26%-28%, the coupling agent of said content adds alkali and transfers pH value to 6-7.5, continues to stir blowing after 15 minutes;
H. packing warehouse-in: the testing laboratory check is sent in sampling below 40 ℃ the time, detects qualified after, metering packing is put in storage.
2. a kind of fast setting as claimed in claim 1 does not have the working method of nitrogen furan resin, it is characterized in that: said properties-correcting agent is urea, and said coupling agent is silane coupling agent Z-6040.
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| CN 201110411403 CN102532450B (en) | 2011-12-12 | 2011-12-12 | Production method for quickly curing nitrogen-free furane resin |
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| CN 201110411403 CN102532450B (en) | 2011-12-12 | 2011-12-12 | Production method for quickly curing nitrogen-free furane resin |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086734A (en) * | 2014-06-26 | 2014-10-08 | 宁夏共享装备有限公司 | Production method for furan resin for 3D (three dimensional) sand mould printing casting |
| CN104193937A (en) * | 2014-08-29 | 2014-12-10 | 玉林市兰科铸造材料有限公司 | Method for preparing furan resin for cast iron by using wastewater and solid formaldehyde |
| CN104193935A (en) * | 2014-08-29 | 2014-12-10 | 玉林市兰科铸造材料有限公司 | Furan resin for cast steel and synthesis method thereof |
| CN104262560A (en) * | 2014-08-29 | 2015-01-07 | 玉林市兰科铸造材料有限公司 | Furan resin for cast iron and synthesis method thereof |
| CN104497476A (en) * | 2014-12-03 | 2015-04-08 | 山东海冠化工科技有限公司 | Phenolic resin modified polystyrene foam and preparation method thereof |
| CN108907068A (en) * | 2018-06-29 | 2018-11-30 | 宁夏共享化工有限公司 | It is a kind of for casting the phenolic resin high-temperature curing agent in 3D inkjet printing field |
| CN111909333A (en) * | 2020-07-22 | 2020-11-10 | 山东宇世巨化工有限公司 | Preparation method of low-ammonia resin curing agent and low-ammonia resin curing agent |
| CN112142936A (en) * | 2020-08-31 | 2020-12-29 | 四川东树新材料有限公司 | Additive manufacturing rapid prototyping furan resin and preparation method thereof |
| CN112222351A (en) * | 2020-09-28 | 2021-01-15 | 宁夏共享化工有限公司 | Furan resin and production method thereof |
| CN113414344A (en) * | 2021-06-23 | 2021-09-21 | 宁夏共享化工有限公司 | Self-hardening furan resin for low-moisture casting and preparation method thereof |
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| CN1088494A (en) * | 1992-12-25 | 1994-06-29 | 机械电子工业部沈阳铸造研究所 | Nitrogen binder for mould core making by hot core box and technology in the no phenol |
| CN1583926A (en) * | 2004-06-04 | 2005-02-23 | 王应华 | Modified phenolic resin adhesive and preparing method thereof |
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2011
- 2011-12-12 CN CN 201110411403 patent/CN102532450B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088494A (en) * | 1992-12-25 | 1994-06-29 | 机械电子工业部沈阳铸造研究所 | Nitrogen binder for mould core making by hot core box and technology in the no phenol |
| CN1583926A (en) * | 2004-06-04 | 2005-02-23 | 王应华 | Modified phenolic resin adhesive and preparing method thereof |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086734B (en) * | 2014-06-26 | 2016-03-30 | 宁夏共享装备有限公司 | A kind of 3D sand mold prints the production method of furan resin for casting |
| CN104086734A (en) * | 2014-06-26 | 2014-10-08 | 宁夏共享装备有限公司 | Production method for furan resin for 3D (three dimensional) sand mould printing casting |
| CN104262560B (en) * | 2014-08-29 | 2016-05-18 | 广西兰科新材料科技有限公司 | Furane resins and synthetic method thereof for cast iron |
| CN104262560A (en) * | 2014-08-29 | 2015-01-07 | 玉林市兰科铸造材料有限公司 | Furan resin for cast iron and synthesis method thereof |
| CN104193935A (en) * | 2014-08-29 | 2014-12-10 | 玉林市兰科铸造材料有限公司 | Furan resin for cast steel and synthesis method thereof |
| CN104193937A (en) * | 2014-08-29 | 2014-12-10 | 玉林市兰科铸造材料有限公司 | Method for preparing furan resin for cast iron by using wastewater and solid formaldehyde |
| CN104193937B (en) * | 2014-08-29 | 2017-12-26 | 广西兰科新材料科技有限公司 | The method that cast iron furane resins are prepared with waste water and solid formaldehyde |
| CN104497476A (en) * | 2014-12-03 | 2015-04-08 | 山东海冠化工科技有限公司 | Phenolic resin modified polystyrene foam and preparation method thereof |
| CN104497476B (en) * | 2014-12-03 | 2016-08-24 | 山东海冠化工科技有限公司 | A kind of phenolic resin modified polystyrene foam and preparation method thereof |
| CN108907068A (en) * | 2018-06-29 | 2018-11-30 | 宁夏共享化工有限公司 | It is a kind of for casting the phenolic resin high-temperature curing agent in 3D inkjet printing field |
| CN111909333A (en) * | 2020-07-22 | 2020-11-10 | 山东宇世巨化工有限公司 | Preparation method of low-ammonia resin curing agent and low-ammonia resin curing agent |
| CN112142936A (en) * | 2020-08-31 | 2020-12-29 | 四川东树新材料有限公司 | Additive manufacturing rapid prototyping furan resin and preparation method thereof |
| CN112222351A (en) * | 2020-09-28 | 2021-01-15 | 宁夏共享化工有限公司 | Furan resin and production method thereof |
| CN112222351B (en) * | 2020-09-28 | 2022-08-05 | 宁夏共享化工有限公司 | Furan resin and production method thereof |
| CN113414344A (en) * | 2021-06-23 | 2021-09-21 | 宁夏共享化工有限公司 | Self-hardening furan resin for low-moisture casting and preparation method thereof |
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| CN102532450B (en) | 2013-03-06 |
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Address after: 750021 Yinchuan, Xixia District, Tongxin South Road, 199#, Patentee after: NINGXIA KOCEL GROUP Co.,Ltd. Patentee after: KOCEL CHEMICALS Co.,Ltd. Address before: 750021 Yinchuan, Xixia District, Tongxin South Road, 199#, Patentee before: NINGXIA KOCEL GROUP Co.,Ltd. Patentee before: KOCEL CHEMICALS Co.,Ltd. |
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Effective date of registration: 20160913 Address after: 750021 Yinchuan, Xixia District, Tongxin South Road, 199#, Patentee after: KOCEL CHEMICALS Co.,Ltd. Address before: 750021 Yinchuan, Xixia District, Tongxin South Road, 199#, Patentee before: NINGXIA KOCEL GROUP Co.,Ltd. Patentee before: KOCEL CHEMICALS Co.,Ltd. |
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Effective date of registration: 20230505 Address after: 261313 50 meters east of Jinjing Avenue, Binhai (Xiaying) Economic Development Zone, Changyi City, Weifang City, Shandong Province Patentee after: Shared New Materials (Shandong) Co.,Ltd. Address before: 750021 Wenchang South Street, Xixia District, Yinchuan City, Ningxia Patentee before: KOCEL CHEMICALS Co.,Ltd. |
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