CN1038821C - Gutta-percha fixing joint pipe and making method - Google Patents
Gutta-percha fixing joint pipe and making method Download PDFInfo
- Publication number
- CN1038821C CN1038821C CN92114761A CN92114761A CN1038821C CN 1038821 C CN1038821 C CN 1038821C CN 92114761 A CN92114761 A CN 92114761A CN 92114761 A CN92114761 A CN 92114761A CN 1038821 C CN1038821 C CN 1038821C
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- CN
- China
- Prior art keywords
- percha
- gutta
- pipe
- sebific duct
- joint pipe
- 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.)
- Expired - Fee Related
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- Processes Of Treating Macromolecular Substances (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention provides a gutta percha fixed connecting pipe and a preparation method. The gutta percha pipe utilizes the characteristics of gutta percha so as to be prepared into the pipe with an expanding opening; the gutta percha pipe of single homogeneity can be prepared by an extruder, and be prepared by chemical fusion or mechanical composition, and then a pipe opening is heated to expand the opening so as to be shaped into the pipe. The present invention solves the problem of the inconvenience caused by the rebound resilience of a rubber water pipe or a vacuum pipe.
Description
The present invention relates to rubber, particularly about the fixedly adapter of gutta-percha.
Always rubber-type water pipe or vacuum tube all have resilience, when being connected with difform joint, bother very much.Because require the internal diameter of sebific duct to utilize the convergent force of sebific duct just can entangle firm after putting so usually less than the external diameter of the joint of required socket, even so, sometimes still can slippage, for this reason, also need the joint outer wall is processed into the latch closure shape (figure one) of projection, in case on-slip is taken off, still such sebific duct will be set on the joint just more difficult, particularly glass tube joint, accidentally, glass tube will be broken, often cause operating personnel's hand injured, even fragments of glass penetrates in the skin.
The purpose of this invention is to provide a kind of gutta-percha fixing joint pipe and preparation method, solved because the use inconvenience that resilience caused of rubber-type water pipe or vacuum tube, even be processed into toward outer wall on the pipe of latch closure shape and overlap, also easily and not slippage, prevented because the unexpected injury that operating personnel's operation discomfort is caused.
The present invention utilizes gutta-percha to have softening at low temperatures thermoplastic deformation and cooling curing, and the ability of reversible deformation repeatedly, invented and a kind ofly be enclosed within another by heat shrink and take over, cold back hardening is played a gutta-percha or a trans polyisoprene fixing and that sealing is used and is taken over.By the adapter that the mouth of pipe, neck are formed, the mouth of pipe is an extension mouth, and the low thermal distorsion temperature of adapter is 60-65 ℃.
Gutta-percha fixing joint pipe can be made the gutta-percha joint that has extension mouth, also can make a kind of single homogeneous pattern of material, the gutta-percha adapter of band extension mouth, or the flared section sebific duct is for containing the gutta-percha type, non-flared section is general purpose rubber (natural rubber, cis-butadiene cement, butadiene-styrene rubber, a neoprene) type, or the nexine of gutta-percha adapter 1 is lined with or none general purpose rubber layer 5, when the general purpose rubber layer was arranged, general gutta-percha thickness was more than 1 times of general purpose rubber thickness.Pipe can be made an end and have extension mouth, also can make two ends and all have extension mouth.
With determining the gutta-percha sebific duct of its internal diameter, in pipe end enlarging typing, make its internal diameter earlier greater than treating the joint external diameter.During use, only need the tube head expansion mouth is enclosed within on the joint, heating then (blowing or hot towel applies at expansion mouth with hair-dryer) can make sebific duct shrink and tightly be enclosed within the adapter to be connect cooling back hardening.Not the time spent, only need heating again, make the sebific duct deliquescing, can conveniently take off, thereby can use repeatedly (as figure two---figure four).
The preparation method of this product is that the gutta-percha vulcanizing system is (weight portion): gutta-percha or trans-polyisoprene 60-100 part; natural rubber, cis-butadiene cement, butadiene-styrene rubber, neoprene 40-0 part; promoter: dibenzothiazyl disulfide or curing tetramethyl thiuram; benzothiazolyl mercaptan 2-0 part; cumyl peroxide or benzoyl peroxide or sulphur 1-2 part; age resistor: 1 part of N-PBNA or N-PA, 15 parts of titanium dioxides, SiO
215 parts, ZnO 2-0, MgO 2-0 part.With this vulcanizing system, send into extruder behind the mixing in banbury or roller then, be extruded into hollow tubular product, the inclusive NAND gutta-percha is taken over and is carried out the chemistry fusion, sends into sulfurizing pot vulcanization again; Or mechanical compound connection, then the mouth of pipe is heated enlarging, be shaped into tubing.
The making of this kind sebific duct, when making of chemical pattern of fusion method, gutta-percha vulcanizing system 1 and general purpose rubber vulcanizing system 2, two parts are separately behind the mixing, time spent is wrapped on the core pipe 4, and the interface overlaps 3 mutually, behind the surperficial rolling, with the sulfuration of plastic film cover tightening seal, heating enlarging typing after the demoulding.When making of mechanical complex method, flared section connects together with same hard core pipe 4 with 2, two sections independent separately moulding of general purpose rubber vulcanizing system and sulfuration then with gutta-percha vulcanizing system 1, non-flared section.
The gutta-percha fixing joint pipe that the present invention produces, owing to utilized the gutta-percha characteristic of the fixing reversible deformation of thermoplastic distortion and cooling at low temperatures, as water pipe and vacuum tube the time, solved the use inconvenience of general purpose rubber pipe, take over and also needn't add reinforcing ring in addition, can play fixation, also non-scald on hand during heating, therefore, not only safety, but also save trouble; Not the time spent, only need heating again, make the sebific duct deliquescing, can conveniently take off, thereby can use repeatedly.In addition, at the nexine of bark of eucommia sebific duct, but liner one deck general purpose rubber layer also provides elastic packing.
Figure one is the drawing in side sectional elevation of latch closure joint.
Figure two is drawings in side sectional elevation that the gutta-percha enlarging is taken over.
Figure three is that the gutta-percha flared tube is enclosed within the drawing in side sectional elevation on the latch closure joint.
Figure four is that the drawing in side sectional elevation that is fixed on the latch closure joint is shunk in the gutta-percha enlarging.
Figure five is drawings in side sectional elevation that the gutta-percha of liner general purpose rubber layer is taken over.
Figure six is drawings in side sectional elevation that the compound gutta-percha of segmented machinery is taken over.
Figure seven is drawings in side sectional elevation that segmented chemistry pattern of fusion gutta-percha is taken over.
Embodiment 1
60 parts of gutta-percha, 40 parts of natural rubbers, 1.5 parts in sulphur, 1 part of promoter (dibenzothiazyl disulfide), 2 parts of ZnO, 2 parts of MgO, 1 part in age resistor (N-PBNA), 15 parts of titanium dioxides, SiO
315 parts.
With the material of above-mentioned prescription, according to different method for makings, resulting bark of eucommia sebific duct, it expands the shape ratio is more than 3 times.As managing heating, its meeting deliquescing, impose expansionary force, then its caliber can become and take over (figure two) greater than waiting, at this moment can freely be enclosed within and wait to take over (figure three), if under heating external force is removed, bark of eucommia sebific duct can shrink, be enclosed within tightly again and wait to take over, the hardening of bark of eucommia sebific duct meeting has after cooling promptly connected firmly and has waited to take over.Embodiment 2
100 parts of gutta-percha, 1.5 parts of cumyl peroxides, 15 parts of titanium dioxides, SiO
215 parts, 1 part of age resistor N-PBNA.
With the material of above-mentioned prescription, in roller, send into extruder behind the mixing, be extruded into hollow tubular product, its expand shape than for 2-3 doubly, use this pipe, by the mouth of pipe is expanded, be enclosed within the connecing on the mouth of vavuum pump easily, be 10 in vacuum
-1During holder, bark of eucommia sebific duct is indeformable.Embodiment 3
Using by general purpose rubber is the interior gutta-percha fixing joint pipe of lining, under approaching-50 ℃ of conditions, still can provide elastic packing.
Claims (2)
1, a kind of gutta-percha fixing joint pipe is made up of flared section, non-flared section, it is characterized in that the flared section sebific duct for containing the gutta-percha type, and non-flared section is the general purpose rubber type, and chemistry merges between two sections, through the sulfuration typing.
2, gutta-percha fixing joint pipe as claimed in claim 1 is characterized in that described flared section sebific duct nexine is lined with a general purpose rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92114761A CN1038821C (en) | 1992-12-24 | 1992-12-24 | Gutta-percha fixing joint pipe and making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92114761A CN1038821C (en) | 1992-12-24 | 1992-12-24 | Gutta-percha fixing joint pipe and making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1088508A CN1088508A (en) | 1994-06-29 |
| CN1038821C true CN1038821C (en) | 1998-06-24 |
Family
ID=4947088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92114761A Expired - Fee Related CN1038821C (en) | 1992-12-24 | 1992-12-24 | Gutta-percha fixing joint pipe and making method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038821C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TR201908500T4 (en) * | 2014-07-16 | 2019-07-22 | Dow Global Technologies Llc | Equipped flexible container and process to produce the same. |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1038825A (en) * | 1988-06-24 | 1990-01-17 | 中国科学院化学研究所 | Extraction of functional materials of guttapercha type |
| CN1039254A (en) * | 1988-07-04 | 1990-01-31 | 中国科学院化学研究所 | High-elastic rubber products gutta percha |
-
1992
- 1992-12-24 CN CN92114761A patent/CN1038821C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1038825A (en) * | 1988-06-24 | 1990-01-17 | 中国科学院化学研究所 | Extraction of functional materials of guttapercha type |
| CN1039254A (en) * | 1988-07-04 | 1990-01-31 | 中国科学院化学研究所 | High-elastic rubber products gutta percha |
Non-Patent Citations (1)
| Title |
|---|
| 《棕胶工业手册》共五分册 1990.12.1 李延村等;化学工业出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1088508A (en) | 1994-06-29 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING JINLI ZHONGKE DUZHONG HIGH-TECH LTD. Free format text: FORMER OWNER: CHEMISTRY INSTITUTE, CHINESE ACADEMY OF SCIENCES Effective date: 20021129 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20021129 Address after: Two floor, two energy stations, north of Zhongguancun, Haidian District,, Beijing Patentee after: Jinli Zhongke Duzhong High Technologies Co., Ltd., Beijing Address before: Beijing, Haidian District, Zhongguancun Patentee before: Institute of Chemistry, Chinese Academy of Sciences |
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| ASS | Succession or assignment of patent right |
Owner name: JINKEDESHENG NEW TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: BEIJING JINLI ZHONGKE DUZHONG HIGH-TECH LTD. Effective date: 20030103 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20030103 Address after: 100086 No. 1105 Pacific International Building, No. 106, Haidian District, Beijing, Zhichun Road Patentee after: Jinkedesheng New Technology Co Ltd Address before: 100080, Beijing, Zhongguancun, two North Street, two high-energy two building, Haidian District Patentee before: Jinli Zhongke Duzhong High Technologies Co., Ltd., Beijing |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |