CN102718459B - Self-lubricating gypsum powder for mold casting of tyre and preparation technology thereof - Google Patents
Self-lubricating gypsum powder for mold casting of tyre and preparation technology thereof Download PDFInfo
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- CN102718459B CN102718459B CN2012100019579A CN201210001957A CN102718459B CN 102718459 B CN102718459 B CN 102718459B CN 2012100019579 A CN2012100019579 A CN 2012100019579A CN 201210001957 A CN201210001957 A CN 201210001957A CN 102718459 B CN102718459 B CN 102718459B
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- lubricating
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- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 30
- 239000010440 gypsum Substances 0.000 title claims abstract description 30
- 238000005266 casting Methods 0.000 title claims abstract description 26
- 239000000843 powder Substances 0.000 title claims abstract description 26
- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 235000006040 Prunus persica var persica Nutrition 0.000 claims abstract description 9
- 239000011398 Portland cement Substances 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims description 14
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 10
- 244000144730 Amygdalus persica Species 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- -1 sulfonated melamine compound Chemical class 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 abstract description 2
- 229920000877 Melamine resin Polymers 0.000 abstract 1
- 240000006413 Prunus persica var. persica Species 0.000 abstract 1
- 239000004809 Teflon Substances 0.000 abstract 1
- 229920006362 Teflon® Polymers 0.000 abstract 1
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical class O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 235000020610 powder formula Nutrition 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012745 toughening agent Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Lubricants (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses self-lubricating gypsum powder for mold casting of a tyre and a preparation technology thereof. The self-lubricating gypsum powder is prepared from 100 parts by weight of alpha-gypsum powder, 0.5 to 1.5 parts by weight of sulfonated melamine formaldehyde resin, 1 to 3 parts by weight of peach gum, 5 to 10 parts by weight of white portland cement and 0.5 to 1.5 parts by weight of Teflon. The invention also discloses the preparation technology of the self-lubricating gypsum powder for mold casting of a tyre. The self-lubricating gypsum powder for mold casting of a tyre has long stirring time, long flowing time, appropriate initial setting time and appropriate final setting time. A mold prepared from the self-lubricating gypsum powder for mold casting of a tyre has good wear resistance. The preparation technology has simple processes, can be operated easily and is conducive to industrial production.
Description
Technical field
The present invention relates to a kind of tyre mould casting gypsum powder and preparation technology thereof, especially relate to a kind of self-lubricating type tyre mould casting gypsum powder and preparation technology thereof.
Background technology
At present, most of tyre casting gypsum die production producer is when making the tyre casting gypsum mould, all directly use high strength gypsum (α-gypsum) powder to be starting material, for 1:0.5～0.55, with water, mix and carry out Mold Making in mass ratio, because the rare thick degree of gained calcium plaster is higher, its effective churning time only has 3min, flowing time 3～5min, presetting period 9min, final setting time 30min, not only to operation, cause certain limitation, also be unfavorable for the finishing to obtained mould.In addition, utilize the wear resisting property of the obtained mould of above-mentioned α-terra alba poor, work-ing life is shorter, and energy consumption is high, shows according to statistics, and the annual loss caused because of friction accounts for one of percentage of total output value.Therefore, seek a kind of rationally, the tire-mold casting gypsum powder formula of science, alleviate material friction, wearing and tearing and solve the lubrication protection problem, become a kind of expectation of products production producer and mould user.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of existing long effective churning time and flowing time are provided, suitable presetting period and final setting time are arranged again, and by its mould wear resisting property of making good self-lubricating type tyre mould casting gypsum powder and preparation technology thereof.
The objective of the invention is to be achieved through the following technical solutions:
The present invention's self-lubricating type tyre mould casting gypsum powder, raw material by following parts by weight is made: 100 parts of α-terra albas, 0.5～1.5 part of sulfonated melamine compound resin, 1～3 part of peach gum, 5～10 parts of white portland cements, 0.5～1.5 part of tetrafluoroethylene.
Further, the preferred version of described self-lubricating type tyre mould casting gypsum powder, made by the raw material of following parts by weight: 100 parts of α-terra albas, 1 part of sulfonated melamine compound resin, 2 parts of peach gums, 8 parts of white portland cements, 1 part of tetrafluoroethylene.
The preparation technology of the present invention's self-lubricating type tyre mould casting gypsum powder: at first by described parts by weight, take each component raw material, then each component raw material is placed in to mixer and mixes 10～20min.
In described raw material: α-terra alba is main raw, and tetrafluoroethylene is lubricant, and sulfonated melamine compound resin is water reducer, also plays toughener and sizing agent effect, and peach gum is additive, and existing sizing agent effect has again delayed coagulation.
Described tetrafluoroethylene is good self-lubricating agent, and its compound with regular structure, stable chemical nature, have good wearability, and its frictional coefficient is generally 0.04～0.3, is minimum in known polymer.Show after deliberation, when tetrafluoroethylene and other material generation friction, its macromolecule crystal is drawn out crystal region, to even face, shift, by Coulomb's force and van der Waals interaction, on dual face, form the composite lubricating film that one deck 20～30nm is thick, thereby can effectively reduce the grinding tool wearing and tearing, and extend its work-ing life.
With existing α-terra alba, compare, the present invention's self-lubricating type tyre mould casting gypsum powder existing long effective churning time and flowing time, suitable presetting period and final setting time are arranged again, and obtained mould has effect preferably alleviating aspect material friction, wear and lubricate protection question, thereby can extend the work-ing life of mould, greatly reduce energy consumption and cost; Its preparation technology is simple, and easy handling is conducive to suitability for industrialized production.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1
The self-lubricating type tyre mould casting gypsum powder of the present embodiment, made by the raw material of following parts by weight: 100 parts of α-terra albas, 0.5 part of sulfonated melamine compound resin, 1 part of peach gum, 5 parts of white portland cements, 0.5 part of tetrafluoroethylene.
Preparation: at first by described parts by weight, take each component raw material, then each component raw material is placed in to mixer mixing 15min.
Embodiment 2
The self-lubricating type tyre mould casting gypsum powder of the present embodiment, made by the raw material of following parts by weight: 100 parts of α-terra albas, 1 part of sulfonated melamine compound resin, 2 parts of peach gums, 8 parts of white portland cements, 1 part of tetrafluoroethylene.
Its preparation technology is with embodiment 1.
Embodiment 3
The self-lubricating type tyre mould casting gypsum powder of the present embodiment, made by the raw material of following parts by weight: 100 parts of α-terra albas, 1.5 parts of sulfonated melamine compound resins, 3 parts of peach gums, 10 parts of white portland cements, 1.5 parts of tetrafluoroethylene.
Its preparation technology is with embodiment 1.
The using method of described embodiment 1-3 self-lubricating type tyre mould casting gypsum powder:
By described self-lubricating type tyre mould casting gypsum powder in mass ratio the ratio of 1:0.5 drop in water, after soaking 5min, vacuum stirring 8min, namely can be used for moulding; Initial set is repaired mould later, after the mould complete drying, just can use.
Embodiment 1-3 gained self-lubricating type tire casting gypsum powder and existing α-terra alba are made respectively to mould as stated above, its effective churning time, flowing time, presetting period, final setting time are tested, and its wear-resisting rate of making product is tested, test result is in Table 1.
Table 1
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 | Existing α-terra alba |
| Effective churning time (min) | 6.8 | 7.5 | 7.1 | 3.9 |
| Flowing time (min) | 8.4 | 9.5 | 8.7 | 4.5 |
| Presetting period (min) | 20.5 | 23.4 | 25.3 | 8.9 |
| Final setting time (min) | 35.6 | 38.1 | 39.2 | 29.8 |
| Wear-resisting rate (g/cm 2） | 70.30 | 58.10 | 66.20 | 120.20 |
As seen from the above table, compare with existing α-terra alba, self-lubricating type tire casting gypsum powder of the present invention is all having clear improvement aspect effective churning time, flowing time, presetting period, final setting time, and particularly the wear resisting property aspect, have obvious advantage.
Claims (3)
1. a self-lubricating type tyre mould casting gypsum powder, is characterized in that, made by the raw material of following parts by weight: 100 parts of α-terra albas, 0.5～1.5 part of sulfonated melamine compound resin, 1～3 part of peach gum, 5～10 parts of white portland cements, 0.5～1.5 part of tetrafluoroethylene.
2. self-lubricating type tyre mould casting gypsum powder according to claim 1, is characterized in that, made by the raw material of following parts by weight: 100 parts of α-terra albas, 1 part of sulfonated melamine compound resin, 2 parts of peach gums, 8 parts of white portland cements, 1 part of tetrafluoroethylene.
3. the preparation technology of a self-lubricating type tyre mould casting gypsum powder as claimed in claim 1 or 2 is characterized in that: at first by described parts by weight, takes each component raw material, then each component raw material is placed in to mixer and mixes 10～20min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100019579A CN102718459B (en) | 2012-01-06 | 2012-01-06 | Self-lubricating gypsum powder for mold casting of tyre and preparation technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100019579A CN102718459B (en) | 2012-01-06 | 2012-01-06 | Self-lubricating gypsum powder for mold casting of tyre and preparation technology thereof |
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| Publication Number | Publication Date |
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| CN102718459A CN102718459A (en) | 2012-10-10 |
| CN102718459B true CN102718459B (en) | 2013-11-27 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105272105A (en) * | 2015-09-25 | 2016-01-27 | 钦州学院 | Making technology of Nixing pottery gypsum molds |
| CN105254264A (en) * | 2015-09-25 | 2016-01-20 | 钦州学院 | Processing method used for increasing Nixing pottery plaster mold strength |
| CN112321252A (en) * | 2020-10-23 | 2021-02-05 | 四川蓝鼎新材料有限公司 | Wear-resistant heat-preservation building gypsum powder and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060458A (en) * | 1990-09-30 | 1992-04-22 | 王全祥 | Composite gypsum material and injection mold device thereof |
| CN1163248A (en) * | 1997-01-08 | 1997-10-29 | 马秋荣 | Heat insulation paste and its producing method |
| CN1594176A (en) * | 2004-07-01 | 2005-03-16 | 易湘如 | Gypsum powder combined material for master mould |
-
2012
- 2012-01-06 CN CN2012100019579A patent/CN102718459B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060458A (en) * | 1990-09-30 | 1992-04-22 | 王全祥 | Composite gypsum material and injection mold device thereof |
| CN1163248A (en) * | 1997-01-08 | 1997-10-29 | 马秋荣 | Heat insulation paste and its producing method |
| CN1594176A (en) * | 2004-07-01 | 2005-03-16 | 易湘如 | Gypsum powder combined material for master mould |
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| CN102718459A (en) | 2012-10-10 |
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Effective date of registration: 20160829 Address after: An Industrial Park Economic Development Zone, Changde City, Hunan province Linli County 415200 Patentee after: Hunan Fu Xiang new type building material Co., Ltd. Address before: 410005, 12 floor, Haidong mansion, Furong Road, Changsha, Hunan Patentee before: Liu Liwen |