CN104259381A - Preparation method for modified water glass for casting - Google Patents
Preparation method for modified water glass for casting Download PDFInfo
- Publication number
- CN104259381A CN104259381A CN201410575637.3A CN201410575637A CN104259381A CN 104259381 A CN104259381 A CN 104259381A CN 201410575637 A CN201410575637 A CN 201410575637A CN 104259381 A CN104259381 A CN 104259381A
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- CN
- China
- Prior art keywords
- water glass
- waste silk
- casting
- modified water
- waterglass
- Prior art date
- 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
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- 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
- B22C1/167—Mixtures of inorganic and organic binding agents
Abstract
The invention provides a preparation method for modified water glass for casting. The water glass has major defects that under large addition amount, the collapsibility of the water glass is not good, which causes difficulty in cleaning of a casting piece, and if used sand is not reused, but is directly stacked in the field, the environment can be influenced; when a polyacrylonitrile waste silk alkaline hydrolysis solution is used as a binding agent, the tensile strength of the water glass can be 0.54 Mpa, and when a polyacrylonitrile waste silk pressure hydrolysate is used as a binding agent, the tensile strength of the water glass can be 0.42 Mpa, but the high-temperature performance of the polyacrylonitrile waste silk alkaline hydrolysis solution or the polyacrylonitrile waste silk pressure hydrolysate is poor, which may cause the fact that under high temperature, a manufactured mold core can be in creep deformation easily to affect dimensional accuracy of the casting piece. The preparation method for the modified water glass for casting adopts the technical scheme that the modified water glass comprises the following components in percentage by weight: 20% of the 35% polyacrylonitrile waste silk alkaline hydrolysis solution, 5% of 30% oxidized starch and the balance of water glass with the baume degree of 49-51. The method provided by the invention is used for preparation of the modified water glass for casting.
Description
technical field:
the present invention relates to a kind of preparation method of modified water glass for casting.
background technology:
mostly current waterglass is that modifier has ester, modified starch and other materials etc. with modified water glass.Its main shortcoming of waterglass is that collapsibility performance is bad when addition is large, difficulty is caused to the cleaning of foundry goods, if do not adopt reclamation of return sand, direct stacking field can impact to environment, if acrylic fibres waste silk adopts alkaline hydrolysis to obtain being a kind of acrylic copolymer salt, adopting press water solution to obtain is the copolymer of a kind of polyacrylic acid and polyacrylamide.Acrylic fibres waste silk alkali solution liquid can reach 0.54Mpa than tensile strength when being used as binding agent, and the ratio tensile strength of pressure hydrolyzate can reach 0.42 Mpa, but they have individual shortcoming to be that high-temperature behavior is bad, easily produces the dimensional accuracy of draw foundry goods at high temperature time institute manufacturing mold core.
summary of the invention:
the object of this invention is to provide a kind of preparation method of modified water glass for casting.
above-mentioned object is realized by following technical scheme:
a kind of modified water glass for casting, its composition comprises: acrylic fibres waste silk alkali solution liquid, oxidized starch, waterglass, and percentage composition is, 35% acrylic fibres waste silk alkali solution liquid 20%, 30% oxidized starch addition is 5%, and surplus is the waterglass of 49-51 Baume degrees.
described modified water glass for casting, percentage composition is, 35% acrylic fibres waste silk alkali solution liquid 25%, 30% oxidized starch addition is 7.5%, and surplus is the waterglass of 49-51 Baume degrees.
described modified water glass for casting, percentage composition is, 35% acrylic fibres waste silk pressure hydrolyzate 30%, 30% oxidized starch addition is 10%, and surplus is the waterglass of 49-51 Baume degrees.
described modified water glass for casting, percentage composition is, 35% acrylic fibres waste silk alkali solution liquid 18%, 35% acrylic fibres waste silk pressure hydrolyzate 7%, 30% oxidized starch addition is 8.5%, and surplus is the waterglass of 49-51 Baume degrees.
the preparation of described modified water glass for casting, the slow acrylic fibres waste silk alkali solution liquid that added by oxidized starch adds in 40 ~ 50 ° of C waterglass under agitation, need during solidification dry or blow carbon dioxide, stir 0.5h-1h, acrylic fibres waste silk alkali solution liquid is added after stirring, cool after again stirring 0.5-1h, then pack.
beneficial effect:
acrylic fibres waste silk wide material sources of the present invention, price is lower, and its hydrolysis production technology is simple, and cost is low, is a kind of modifier with better development prospect.Oxidized starch (self-control) is a kind of a kind of polycarboxylate containing a large amount of carboxyl, can improve the blended effect of acrylic fibres waste silk hydrolyzate and waterglass after adding, and the film itself formed also has certain intensity.The modified water glass intensity of producing is high, reduces the addition of waterglass, improves the combination property of waterglass under the prerequisite that can meet production.
detailed description of the invention:
embodiment 1:
a kind of modified water glass for casting, its composition comprises: acrylic fibres waste silk alkali solution liquid, oxidized starch, waterglass, and percentage composition is, 35% acrylic fibres waste silk alkali solution liquid 20%, 30% oxidized starch addition is 5%, and surplus is the waterglass of 49-51 Baume degrees.
embodiment 2:
modified water glass for casting according to embodiment 1, percentage composition is, 35% acrylic fibres waste silk alkali solution liquid 25%, 30% oxidized starch addition is 7.5%, and surplus is the waterglass of 49-51 Baume degrees.
embodiment 3:
modified water glass for casting described according to embodiment 1 or 2, percentage composition is, 35% acrylic fibres waste silk pressure hydrolyzate 30%, 30% oxidized starch addition is 10%, and surplus is the waterglass of 49-51 Baume degrees.
embodiment 4:
modified water glass for casting described according to embodiment 1 or 2 or 3, percentage composition is, 35% acrylic fibres waste silk alkali solution liquid 18%, 35% acrylic fibres waste silk pressure hydrolyzate 7%, 30% oxidized starch addition is 8.5%, and surplus is the waterglass of 49-51 Baume degrees.
embodiment 5:
the preparation method of embodiment 1 or the described modified water glass for casting described in 2 or 3 or 4, the slow acrylic fibres waste silk alkali solution liquid that added by oxidized starch adds in 40 ~ 50 ° of C waterglass under agitation, need during solidification dry or blow carbon dioxide, stir 0.5h-1h, acrylic fibres waste silk alkali solution liquid is added after stirring, cool after again stirring 0.5-1h, then pack.
Claims (5)
1. a modified water glass for casting, its composition comprises: acrylic fibres waste silk alkali solution liquid, oxidized starch, waterglass, it is characterized in that: percentage composition is, 35% acrylic fibres waste silk alkali solution liquid 20%, 30% oxidized starch addition is 5%, and surplus is the waterglass of 49-51 Baume degrees.
2. modified water glass for casting according to claim 1, is characterized in that: percentage composition is, 35% acrylic fibres waste silk alkali solution liquid 25%, 30% oxidized starch addition is 7.5%, and surplus is the waterglass of 49-51 Baume degrees.
3. modified water glass for casting according to claim 1 and 2, is characterized in that: percentage composition is, 35% acrylic fibres waste silk pressure hydrolyzate 30%, 30% oxidized starch addition is 10%, and surplus is the waterglass of 49-51 Baume degrees.
4. the modified water glass for casting according to claim 1 or 2 or 3, it is characterized in that: percentage composition is, 35% acrylic fibres waste silk alkali solution liquid 18%, 35% acrylic fibres waste silk pressure hydrolyzate 7%, 30% oxidized starch addition is 8.5%, and surplus is the waterglass of 49-51 Baume degrees.
5. the preparation method of a claim 1 or 2 or the modified water glass for casting described in 3 or 4, it is characterized in that: the slow acrylic fibres waste silk alkali solution liquid that added by oxidized starch adds in 40 ~ 50 ° of C waterglass under agitation, need during solidification dry or blow carbon dioxide, stir 0.5h-1h, acrylic fibres waste silk alkali solution liquid is added after stirring, cool after again stirring 0.5-1h, then pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410575637.3A CN104259381B (en) | 2014-10-25 | 2014-10-25 | The preparation method of modified water glass for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410575637.3A CN104259381B (en) | 2014-10-25 | 2014-10-25 | The preparation method of modified water glass for casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104259381A true CN104259381A (en) | 2015-01-07 |
| CN104259381B CN104259381B (en) | 2017-12-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410575637.3A Expired - Fee Related CN104259381B (en) | 2014-10-25 | 2014-10-25 | The preparation method of modified water glass for casting |
Country Status (1)
| Country | Link |
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| CN (1) | CN104259381B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108285206A (en) * | 2018-02-11 | 2018-07-17 | 陈沩 | A kind of modified hydrolyzed acrylic fibres waste silk antisludging agent and preparation method thereof |
| CN108341499A (en) * | 2018-02-11 | 2018-07-31 | 陈沩 | A kind of antisludging agent and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1404157A1 (en) * | 1985-05-15 | 1988-06-23 | Одесский Политехнический Институт | Method of producing cores and moulds |
| CN102992786A (en) * | 2012-11-22 | 2013-03-27 | 济南圣泉集团股份有限公司 | Preparation method and usage method for foundry silicate binder |
| CN103567355A (en) * | 2013-10-11 | 2014-02-12 | 铜陵市经纬流体科技有限公司 | Organic ester sodium silicate self-hardening sand and preparation method thereof |
| CN103586408A (en) * | 2013-11-13 | 2014-02-19 | 四川安岳宇良汽车水泵有限公司 | Preparation technology of casting sand for water pump casting |
-
2014
- 2014-10-25 CN CN201410575637.3A patent/CN104259381B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1404157A1 (en) * | 1985-05-15 | 1988-06-23 | Одесский Политехнический Институт | Method of producing cores and moulds |
| CN102992786A (en) * | 2012-11-22 | 2013-03-27 | 济南圣泉集团股份有限公司 | Preparation method and usage method for foundry silicate binder |
| CN103567355A (en) * | 2013-10-11 | 2014-02-12 | 铜陵市经纬流体科技有限公司 | Organic ester sodium silicate self-hardening sand and preparation method thereof |
| CN103586408A (en) * | 2013-11-13 | 2014-02-19 | 四川安岳宇良汽车水泵有限公司 | Preparation technology of casting sand for water pump casting |
Non-Patent Citations (1)
| Title |
|---|
| 王丽杰: "由聚丙烯腈废丝制备粘结剂的工艺及其应用", 《石油化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108285206A (en) * | 2018-02-11 | 2018-07-17 | 陈沩 | A kind of modified hydrolyzed acrylic fibres waste silk antisludging agent and preparation method thereof |
| CN108341499A (en) * | 2018-02-11 | 2018-07-31 | 陈沩 | A kind of antisludging agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104259381B (en) | 2017-12-26 |
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| CB03 | Change of inventor or designer information |
Inventor after: Jiang Wenyong Inventor after: Jiang Yanliang Inventor after: Feng Yicheng Inventor after: Guo Erjun Inventor after: Wang Liping Inventor before: Jiang Wenyong Inventor before: Feng Yicheng Inventor before: Guo Erjun Inventor before: Wang Liping |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20181025 |
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| CF01 | Termination of patent right due to non-payment of annual fee |