SU406616A1 - MIXTURE FOR CASTING STEM AND FORMS - Google Patents
MIXTURE FOR CASTING STEM AND FORMSInfo
- Publication number
- SU406616A1 SU406616A1 SU1474602A SU1474602A SU406616A1 SU 406616 A1 SU406616 A1 SU 406616A1 SU 1474602 A SU1474602 A SU 1474602A SU 1474602 A SU1474602 A SU 1474602A SU 406616 A1 SU406616 A1 SU 406616A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- mixture
- casting
- stem
- forms
- copolymer
- Prior art date
Links
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- Compositions Of Macromolecular Compounds (AREA)
- Mold Materials And Core Materials (AREA)
Description
1one
Изобретение относитс к литейному производству , в частности к составам смесей дл литейных стержней и фор1м.FIELD OF THE INVENTION The invention relates to a foundry, in particular, to mixtures for casting cores and molds.
Известна смесь дл литейных стержней и форм, состо ща из наполнител и св зующего на основе сополимера мета«риловой кислоты . Однако известные смеси имеют недостаточные физико-механичесмие свойства, например , недостаточную механическую прочность после отверждени .A known mixture for cores and molds, consisting of a filler and binder based on a copolymer of methyryl acid. However, the known mixtures have insufficient physical and mechanical properties, for example, insufficient mechanical strength after curing.
Целью изобретени вл етс повышение физико-механических свойств смеси, в тоэд числе механической прочности после отверждени .The aim of the invention is to improve the physicomechanical properties of the mixture, including the mechanical strength after curing.
Дл этого в качестве св зующего в составе смеси .примен ют 10-15%-ный водный раствор сополимера метакриловой кислоты с диалкилмалеатом при следующем соотношении компонентов, вес. ч:To do this, a 10-15% aqueous solution of methacrylic acid copolymer with dialkyl maleate is used as a binder in the mixture in the following ratio of components, wt. h:
Наполнитель96Filler96
10-15%-ный водный раствор сополи1мера метакриловой кислоты с диалкилмалеатом8-12 .10-15% aqueous solution of copolymer of methacrylic acid with dialkyl maleate 8-12.
Указанный водорастворимый сополимер получают на основе непредельных карбоновых кислот (метакриловой кислоты) и диэфиров непредельных дикарбоновых кислот (диалкилмалеатов ). Сополимеры получают в растворе диметилформамида и в воде в присутствий инициатора - динитрила азоизомасл ной кислоты в количестве 0,5 моль %. Полимеризаци проводитс при температуре 70-90°С в течение 6-9 час. Сополимеры хорошо раствор ютс в воде, диметилформамиде, спирте.The specified water-soluble copolymer is obtained on the basis of unsaturated carboxylic acids (methacrylic acid) and diesters of unsaturated dicarboxylic acids (dialkyl maleates). Copolymers are obtained in a solution of dimethylformamide and in water in the presence of azo-isobutyric acid dinitrile initiator in an amount of 0.5 mol%. The polymerization is carried out at a temperature of 70-90 ° C for 6-9 hours. The copolymers dissolve well in water, dimethylformamide, and alcohol.
Состав и свойства некоторых из сополимеров даны в таблице.The composition and properties of some of the copolymers are given in the table.
Предложенную смесь готов т в известных смесител х.The proposed mixture is prepared in known mixers.
Режим сушки: продолжительность-1,5- 2 час, температура 150-180°С. Предел нрочности на разрыв -3,23-12,54 кГ/см.Drying mode: duration - 1.5-2 hours, temperature 150-180 ° C. The limit of durability on a gap is-3,23-12,54 kg / cm.
Предмет изобретени Subject invention
Смесь дл литейных стержней и форм, состо ща из наполнител и св зующего на основе сополимера метакриловой кислоты, отличающа с тем, что, с целью новышени физико-механических свойств смеси, в качестве св зующего ионользован 10-15%-ный водный раствор сополимера метакриловой кислоты с диалкилмалеатом при следующем соотнощении компонентов, вес. ч.:A mixture for foundry rods and molds, consisting of a filler and a binder based on a copolymer of methacrylic acid, characterized in that, in order to improve the physicomechanical properties of the mixture, a 10-15% aqueous solution of a methacrylic copolymer acids with dialkyl maleate with the following ratio of components, weight. including:
Паполнитель96Folder96
10-15%-ный водный раствор сополимера метакриловой кислоты с диалкилмалеатом8-12 .10-15% aqueous solution of methacrylic acid copolymer with dialkyl maleate 8-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1474602A SU406616A1 (en) | 1970-09-11 | 1970-09-11 | MIXTURE FOR CASTING STEM AND FORMS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1474602A SU406616A1 (en) | 1970-09-11 | 1970-09-11 | MIXTURE FOR CASTING STEM AND FORMS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU406616A1 true SU406616A1 (en) | 1973-11-21 |
Family
ID=20457179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1474602A SU406616A1 (en) | 1970-09-11 | 1970-09-11 | MIXTURE FOR CASTING STEM AND FORMS |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU406616A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0119468A1 (en) * | 1983-02-17 | 1984-09-26 | Röhm Gmbh | Binder for foundry sands |
| US4585809A (en) * | 1983-02-17 | 1986-04-29 | Rohm Gmbh | Resin binders for foundry molding sands |
-
1970
- 1970-09-11 SU SU1474602A patent/SU406616A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0119468A1 (en) * | 1983-02-17 | 1984-09-26 | Röhm Gmbh | Binder for foundry sands |
| US4585809A (en) * | 1983-02-17 | 1986-04-29 | Rohm Gmbh | Resin binders for foundry molding sands |
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