CN105110750A - Gypsum for aviation alloy casting mold and preparation method of gypsum - Google Patents
Gypsum for aviation alloy casting mold and preparation method of gypsum Download PDFInfo
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- CN105110750A CN105110750A CN201510546247.8A CN201510546247A CN105110750A CN 105110750 A CN105110750 A CN 105110750A CN 201510546247 A CN201510546247 A CN 201510546247A CN 105110750 A CN105110750 A CN 105110750A
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Abstract
The invention relates to gypsum for an aviation alloy casting mold and a preparation method of the gypsum, and belongs to the technical field of gypsum casting. The gypsum is prepared from the following raw materials in parts by weight: 15-25 parts of a gel material, 70-78 parts of a refractory material, 1-2 parts of a defoaming agent, 1-2 parts of an anti-cracking agent, 1-1.5 parts of a retarder, 7-11 parts of a flexibilizer and 4-5 parts of polypentabromobenzyl acrylate. The preparation method comprises the following steps: stirring the refractory material in mixing equipment for 5-10 minutes; adding the gel material to be mixed and stirred for 10-15 minutes; adding the defoaming agent and anti-cracking agent to be stirred for 5-10 minutes; and adding the polypentabromobenzyl acrylate and flexibilizer to be stirred for 10-15 minutes, and adding the retarder, and uniformly stirring to obtain a gypsum finished product. The gypsum for an aviation alloy casting mold is prepared by adopting a new raw material composition and proportion, and has the advantages of high strength, wide application range and high temperature resistance; and the preparation method is simple, is easy to operate, and is beneficial to industrial production.
Description
Technical field
The present invention relates to a kind of gypsum, be specifically related to a kind of aerometal casting mould gypsum and preparation method thereof.
Background technology
The shaping mould gypsum used of aerometal casting mould gypsum mold, that the aerometal casting mould Gypsum slurry after stirring is cast on pre-processed silicon rubber mould, silicon rubber mould is taken out after question response hardened forming, then plaster mould is dried, by melted aluminium alloy or other pouring metal melts in plaster mould, clean out gypsum after metal freezing and namely complete tire foundry goods.
Aerometal casting mould gypsum mold is different from other mould, has special requirement, be mainly reflected in time of coagulation, the coefficient of expansion, intensity, high temperature resistant aspect to the performance of aerometal casting mould terra alba.
A kind of aerometal casting mould terra alba is disclosed in the invention " a kind of environment-friendly type aerometal casting mould terra alba and preparation technology thereof " of application number 201110452212.X, this terra alba is made up of the raw material of following parts by weight: α-terra alba 100 parts, white portland cement 15 ~ 25 parts, sulfonated melamine compound resin 0.5 ~ 1.5 part, peach gum 1 ~ 3 part, 5 ~ 15 parts, vegetable fibre.
Disclosed in the invention " a kind of high tenacity tyre mould casting gypsum powder and preparation technology thereof " of application number 201210001960.0, tyre mould casting gypsum powder is by α-terra alba 100 parts, polyolefin elastomer 15 ~ 30 parts, ethylene-vinyl acetate copolymer 10 ~ 20 parts, silica powder 15 ~ 30 parts, peach gum 0.05 ~ 0.1 part composition.
The aerometal casting mould terra alba disclosed in the invention " a kind of high-fluidity tire casting mould terra alba and preparation technology thereof " of application number 201110445982.1 is by α-terra alba 100 parts, white portland cement 15 ~ 25 parts, sulfonated melamine compound resin 0.5 ~ 1.5 part, peach gum 1 ~ 3 part, 5 ~ 15 parts, magnesium sulfate composition.
Relative to prior art, in above-mentioned technology, the performance such as churning time, flowing time, setting time, intensity of aviation alloy casting mould terra alba all has some improvement.
Can find out, existing aerometal casting mould gypsum all needs, at time of coagulation and flowing time, the performance index such as intensity to make improvement.
Summary of the invention
The object of the invention is, in order to overcome the above-mentioned defect existed in prior art, to provide a kind of aerometal casting mould gypsum and preparation method thereof.
The aerometal casting mould gypsum that the present invention proposes, raw material and the parts by weight of described gypsum are respectively: gelling material 15-25 part, refractory materials 70-78 part, defoamer 1-2 part, crack resistence agent 1-2 part, retardant 1-1.5 part, toughner 7-11 part, polyacrylic acid pentabromo-benzyl ester 4-5 part.
In technique scheme, described gelling material is hydrothermal method α gypsum.
In technique scheme, described refractory materials is English-Chinese one or more of quartz, quartz sand, cristobalite, zircon.
In technique scheme, the granularity of described refractory materials is 600 orders.
In technique scheme, described defoamer is one or more in polydimethylsiloxane, cyclomethicone or methylsiloxane.
In technique scheme, described crack resistence agent is one or more in sodium-chlor, magnesium sulfate or Repone K.
In technique scheme, described retardant is one or more in citric acid, protein cleavage liquid, Sodium salts humic acids.
In technique scheme, described toughner is one or more in polysulfone resin, urethane.
Prepare the method for above-mentioned aerometal casting mould gypsum, comprise the following steps:
One, described refractory materials is dropped into mixing equipment and stir 5-10 minute;
Two, after stirring, then gelling material mix and blend 10-15 minute is added;
Three, 5-10 minute is stirred after adding defoamer, crack resistence agent.
Four, stir 10-15 minute after adding polyacrylic acid pentabromo-benzyl ester, toughner, add retardant subsequently, stir and namely obtain final gypsum product.
The existing longer effective churning time of aerometal casting mould gypsum of the present invention and flowing time, have again suitable presetting period and final setting time, the product strength made with it is high, wide accommodation, high temperature resistant, and preparation technology is simple, easy handling, is conducive to suitability for industrialized production.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
The aerometal casting mould gypsum that the present invention proposes, raw material and the parts by weight of described gypsum are respectively: gelling material 15-25 part, refractory materials 70-78 part, defoamer 1-2 part, crack resistence agent 1-2 part, retardant 1-1.5 part, toughner 7-11 part, polyacrylic acid pentabromo-benzyl ester 4-5 part.
Wherein gelling material is hydrothermal method α gypsum; Refractory materials is English-Chinese one or more of quartz, quartz sand, cristobalite, zircon; Defoamer is one or more in polydimethylsiloxane, cyclomethicone or methylsiloxane; Crack resistence agent is one or more in sodium-chlor, magnesium sulfate or Repone K; Retardant is one or more in citric acid, protein cleavage liquid, Sodium salts humic acids; Toughner is one or more in polysulfone resin, urethane;
Manufacture the method for aviation alloy casting mould gypsum in the present invention, comprise the following steps:
One, first refractory materials is dropped into mixing equipment and stir 5-10 minute;
Two, gelling material mix and blend 10-15 minute is added again;
Three, 5-10 minute is stirred after adding defoamer, crack resistence agent.
Four, stir 10-15 minute after adding polyacrylic acid pentabromo-benzyl ester, toughner, add retardant subsequently, stir and namely obtain final gypsum product.
Embodiment 1:
Aerometal casting mould gypsum: wherein the raw material of terra alba and parts by weight are respectively: 15 parts, hydrothermal method α gypsum, 600 30 parts, object quartz, 600 45 parts, destination party quartz, polydimethylsiloxane 1 part, 1.5 parts, sodium-chlor, Sodium salts humic acids 1.5 parts, polysulfone resin 8 parts, polyacrylic acid pentabromo-benzyl ester 4 parts.
Preparation method is: first quartz and cristobalite are dropped into mixing equipment and stir 5 minutes; After stirring, then add hydrothermal method α gypsum mix and blend 10 minutes; Add polydimethylsiloxane and sodium-chlor mix and blend 10 minutes; Add polyacrylic acid pentabromo-benzyl ester and polysulfone resin stirs 10 minutes, add Sodium salts humic acids subsequently and stir and namely obtain final gypsum product.
Embodiment 2:
Aerometal casting mould gypsum: wherein the raw material of terra alba and parts by weight are respectively: 20 parts, hydrothermal method α gypsum, 600 object zircon English 40 parts, 600 object quartz sands 38 parts, cyclomethicone 1.5 parts, 1 part, magnesium sulfate, citric acid 1.5 parts, polysulfone resin 11 parts, polyacrylic acid pentabromo-benzyl ester 5 parts.
Preparation method is: first zircon English and quartz sand are dropped into mixing equipment and stirs 10 minutes; After stirring, then add hydrothermal method α gypsum mix and blend 10 minutes; Add cyclomethicone and magnesium sulfate mix and blend 5 minutes; Add polysulfone resin and polyacrylic acid pentabromo-benzyl ester stirs 15 minutes, add citric acid subsequently and stir and namely obtain final gypsum product.
Embodiment 3:
Aerometal casting mould gypsum: wherein the raw material of terra alba and parts by weight are respectively: 20 parts, hydrothermal method α gypsum, 25 parts, 600 objects quartz, 600 object zircon English 25 parts, 30 parts, 600 destination party quartz, methylsiloxane 1 part, 1.5 parts, Repone K, protein cleavage liquid 1 part, urethane 7 parts, polyacrylic acid pentabromo-benzyl ester 4 parts.
Preparation method is: first zircon English, quartz and cristobalite dropped into mixing equipment and stir 10 minutes; After stirring, then add hydrothermal method α gypsum mix and blend 10 minutes; Add methylsiloxane and Repone K mix and blend 5 minutes; Add urethane and polyacrylic acid pentabromo-benzyl ester stirs 15 minutes, add protein cleavage liquid subsequently and stir and namely obtain final gypsum product.
Embodiment 4:
Aerometal casting mould gypsum: wherein the raw material of terra alba and parts by weight are respectively: 25 parts, hydrothermal method α gypsum, 600 order zircon English 38 parts, 600 order cristobalite 38 parts, methylsiloxane 0.5 part, cyclomethicone 1 part, 0.5 part, Repone K, 0.5 part, sodium-chlor, protein cleavage liquid 1.5 parts, polysulfone resin 8 parts, urethane 3 parts, polyacrylic acid pentabromo-benzyl ester 5 parts.
Preparation method is: first zircon English and cristobalite are dropped into mixing equipment and stirs 10 minutes; After stirring, then add hydrothermal method α gypsum mix and blend 10 minutes; Add methylsiloxane, cyclomethicone, sodium-chlor and Repone K mix and blend 10 minutes; Add polysulfone resin, urethane and polyacrylic acid pentabromo-benzyl ester and stir 15 minutes, add protein cleavage liquid subsequently and stir and namely obtain final gypsum product.
Detected by final gypsum product in above-described embodiment 1, embodiment 2, embodiment 3, embodiment 4, performance is as shown in the table:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Existing gypsum | |
| Presetting period | 9-10min | 8-9min | 8-9min | 9-10min | 3-5min |
| Final setting time | 12-13min | 11-12min | 11-12min | 16-18min | 6-8min |
| Folding strength | 13.2MPa | 11.8MPa | 11.4MPa | 15.5MPa | 7-9MPa |
| Ultimate compression strength | 32.5MPa | 28.8MPa | 31.5MPa | 33.3MPa | 22-25MPa |
| Linear shrinkage ratio | 0.11％ | 0.12％ | 0.15％ | 0.1％ | 0.25％ |
| Rate of expansion | 0.05％ | 0.05％ | 0.1％ | 0.03％ | 0.15％ |
Can find out, presetting period in above-mentioned four embodiments, final setting time, folding strength, the index hinge structure such as ultimate compression strength, linear shrinkage ratio and rate of expansion all have larger improvement, and rate of expansion hinge structure is greatly reduced simultaneously, substantially reduces gypsum expansion at high temperature, facilitate the disengaging of gypsum mold, higher folding strength and ultimate compression strength also extend work-ing life simultaneously.
The content be not described in detail in this specification sheets belongs to the known prior art of professional and technical personnel in the field.
Claims (9)
1. an aerometal casting mould gypsum, is characterized in that: raw material and the parts by weight of described gypsum are respectively: gelling material 15-25 part, refractory materials 70-78 part, defoamer 1-2 part, crack resistence agent 1-2 part, retardant 1-1.5 part, toughner 7-11 part, polyacrylic acid pentabromo-benzyl ester 4-5 part.
2. according to the aerometal casting mould gypsum in claim 1, it is characterized in that: described gelling material is hydrothermal method α gypsum.
3. according to the aerometal casting mould gypsum in claim 1, it is characterized in that: described refractory materials is English-Chinese one or more of quartz, quartz sand, cristobalite, zircon.
4. according to the aerometal casting mould gypsum in claim 3, it is characterized in that: the granularity of described refractory materials is 600 orders.
5. according to the aerometal casting mould gypsum in claim 1, it is characterized in that: described defoamer is one or more in polydimethylsiloxane, cyclomethicone or methylsiloxane.
6. according to the aerometal casting mould gypsum in claim 1, it is characterized in that: described crack resistence agent is one or more in sodium-chlor, magnesium sulfate or Repone K.
7. according to the aerometal casting mould gypsum in claim 1, it is characterized in that: described retardant is one or more in citric acid, protein cleavage liquid, Sodium salts humic acids.
8. according to the aerometal casting mould gypsum in claim 1, it is characterized in that: described toughner is one or more in polysulfone resin, urethane.
9. prepare a method for aerometal casting mould gypsum described in any one of claim 1-8, it is characterized in that, comprise the following steps:
One, described refractory materials is dropped into mixing equipment and stir 5-10 minute;
Two, after stirring, then gelling material mix and blend 10-15 minute is added;
Three, 5-10 minute is stirred after adding defoamer, crack resistence agent.
Four, stir 10-15 minute after adding polyacrylic acid pentabromo-benzyl ester, toughner, add retardant subsequently, stir and namely obtain final gypsum product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510546247.8A CN105110750A (en) | 2015-08-29 | 2015-08-29 | Gypsum for aviation alloy casting mold and preparation method of gypsum |
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| CN201510546247.8A CN105110750A (en) | 2015-08-29 | 2015-08-29 | Gypsum for aviation alloy casting mold and preparation method of gypsum |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522101A (en) * | 2016-02-19 | 2016-04-27 | 江苏一夫科技股份有限公司 | Industrial byproduct gypsum mold casting powder for investment casting and preparing method of industrial byproduct gypsum mold casting powder |
| CN114836054A (en) * | 2021-02-01 | 2022-08-02 | 山西小蚁科技有限公司 | Impression material and preparation method and application thereof |
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| US4355128A (en) * | 1981-05-15 | 1982-10-19 | Facet Enterprises, Inc. | Durable molded articles |
| CN1106321A (en) * | 1994-07-14 | 1995-08-09 | 苏贝蒂 | Mould cast powder for precision found |
| CN102531516A (en) * | 2011-12-30 | 2012-07-04 | 刘立文 | Glass fiber reinforcing tyre casting gypsum powder and preparation method thereof |
| CN102557564A (en) * | 2011-12-28 | 2012-07-11 | 刘立文 | High-fluidity tire forming gypsum powder and preparation process thereof |
| CN102701692A (en) * | 2012-01-06 | 2012-10-03 | 刘立文 | High-toughness tire mold casting gypsum powder and preparation process thereof |
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2015
- 2015-08-29 CN CN201510546247.8A patent/CN105110750A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4355128A (en) * | 1981-05-15 | 1982-10-19 | Facet Enterprises, Inc. | Durable molded articles |
| CN1106321A (en) * | 1994-07-14 | 1995-08-09 | 苏贝蒂 | Mould cast powder for precision found |
| CN102557564A (en) * | 2011-12-28 | 2012-07-11 | 刘立文 | High-fluidity tire forming gypsum powder and preparation process thereof |
| CN102531516A (en) * | 2011-12-30 | 2012-07-04 | 刘立文 | Glass fiber reinforcing tyre casting gypsum powder and preparation method thereof |
| CN102701692A (en) * | 2012-01-06 | 2012-10-03 | 刘立文 | High-toughness tire mold casting gypsum powder and preparation process thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522101A (en) * | 2016-02-19 | 2016-04-27 | 江苏一夫科技股份有限公司 | Industrial byproduct gypsum mold casting powder for investment casting and preparing method of industrial byproduct gypsum mold casting powder |
| CN105522101B (en) * | 2016-02-19 | 2018-09-28 | 江苏一夫科技股份有限公司 | A kind of moltening mold castings industry by-product gypsum type casting powder and preparation method thereof |
| CN114836054A (en) * | 2021-02-01 | 2022-08-02 | 山西小蚁科技有限公司 | Impression material and preparation method and application thereof |
| CN114836054B (en) * | 2021-02-01 | 2023-08-15 | 山西小蚁科技有限公司 | Impression material and preparation method and application thereof |
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