CN86100216B - Gutta-percha extraction from eucommia leaves or barks - Google Patents
Gutta-percha extraction from eucommia leaves or barksInfo
- Publication number
- CN86100216B CN86100216B CN86100216A CN86100216A CN86100216B CN 86100216 B CN86100216 B CN 86100216B CN 86100216 A CN86100216 A CN 86100216A CN 86100216 A CN86100216 A CN 86100216A CN 86100216 B CN86100216 B CN 86100216B
- Authority
- CN
- China
- Prior art keywords
- gutta
- percha
- waterpower
- smashed
- speed
- 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
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- Polysaccharides And Polysaccharide Derivatives (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a new technological process for extracting gutta-percha by using a gutta-percha leaf (bark) as a raw material. The present invention is characterized in that the gutta-percha leaf (bark) is fermented or steamed to destroy a cell wall of the gutta-percha leaf (bark); the tissue of the gutta-percha leaf (bark) is crushed by a high speed water power crushing machine, and a gutta-percha thread is separated; then, impurities are removed from the gutta-percha thread to obtain the gutta-percha, and gutta-percha content reaches more than 85%. The process for extracting the gutta-percha has the advantages of a few process steps, simple equipment and convenient operation, and accordingly, cost is reduced.
Description
The invention belongs to producing of natural rubber, is a kind of extracting method of gutta-percha.
China's eucommia resource is very abundant, and planting range spreads all over 15 provinces such as Shaanxi, Sichuan, Yunnan, Hunan, Hubei.In the Folium Eucommiae (or skin) except containing the active drug such as hypotensive exceptionally, also contain a considerable amount of gutta-percha, its chemical name is trans-polyisoprene, because constitutional features, mechanically resistant material under the normal temperature, always can only make plastic articles, such as undersea cable, golf ball and medical shaping material etc.The middle of this century, because the development of cheap synthetic plastics, the application of gutta-percha is affected, and range of application is dwindled.The patent of tight auspicious virtue in 1984 " method for preparing rubber from trans-polyisoprene " (Deutsches Reichs-Patent DE3227757) becomes high elastic rubber with this kind materials processing first, this is a kind of new caoutchouc variety for rubber industry increases, new way is provided, thereby has caused that again people extract the interest of natural gutta-percha from gutta-percha tree.The present invention seeks a kind of easy gluing method of carrying under this kind background, to obtain cheap gutta-percha, be the gutta-percha comprehensive utilization of resources, and accelerated development high elastic Folium glue new variety lay the foundation.
Before the present invention, aspect the technology of carrying natural gum and employed mechanical means, there is the Soviet Union to produce the processing process (64～97 pages of " guttapercha " nineteen fifty-five versions) of guttapercha (being gutta-percha).The matrix present principles of carrying of this kind technology is with the material after fully fermentation and the boiling, after repeatedly pulverizing and sieving, is processed into superfine rubber cement, again according to the proportion difference, utilizes centrifuging to separate on this basis.Whole technologies are not except washing and fermentation require the heating that other each technologies all need carry out under 65～100 ℃.This kind technology required equipment is many and complicated, thereby valuable product.Mentioned the gluing method of carrying of China in " construction of bark of eucommia woods and the utilization of gutta-percha tree " (the Forestry In Guizhou Province Room, 85～93 pages of Guizhou People's Press nineteen fifty-nine versions) book that domestic nineteen fifty-nine publishes.The technical process of this method is as follows: earlier with material water logging, rinsing, process with 2～3% liming, crush then, wash, ferment, wash, smash to pieces, alkali soaks (10%NaOH2～3 hour; 5%NaOH1～2 sky and water flushing; 5%NaOH1～2 sky and water flushing; 5%NaOH3～4 sky and water flushing).Use subsequently hot water separating impurity (stir, sieve), carry out chlorine by chlorine again and float.At last, carry out acidleach (dense HCl, 2 hours; 1～2% hydrochloric acid 1～2 day).This kind extracting method, not only technological process is quite loaded down with trivial details, and needs several reagent repeated treatments, thereby causes expensively, is difficult for industrialization.
The invention a kind of technology simple and be suitable for the novel process of the extraction gutta-percha of places of origin of raw materials business enterprise expand, and designed alone special waterpower and smashed and analyse glue machinery.New technological flow as shown in Figure 1, its main contents are as follows: earlier Folium Eucommiae (or skin) is placed in the pond (1) and cleans, then it is sent into fermentation in the fermentation vat (2), flushing dries in water extracter (3) subsequently, boiling in the pulp digester (4) of then material being packed into.Material after the boiling through water extracter (3) again wash dry after, send into waterpower and smash (so-called " smashing " means the meaning of analysing glue, lower with) machine (5) here and smash, it is 2～20% that waterpower is smashed concentration; It is below 50 ℃ that waterpower is smashed temperature; It is 20～80 meter per seconds that waterpower is smashed speed, and it then is 30～50 meter per seconds (this is equivalent to: the rotating speed of the blade of diameter 5.6cm is 7200～12000 rev/mins) that best waterpower is smashed speed.Sizing material after smashing sieves through testing sifter (6).To sieve collodion silk rinsing in floating parser (7), the clean gutta-percha of rinsing is sent into compound stalk forming in the press (8).Boiling then makes xylogen, Mierocrystalline cellulose increase proportion and further destroys tree lace and Mierocrystalline cellulose on every side in above-mentioned technology.Dry flushing and can remove waste liquid; Smash is for the swollen collodion silk of Du is dissociated out; The gutta-percha that the screen analysis rinsing then can obtain meeting the requirements; Compound stalk forming is convenient to packed and transported.
Technical process of the present invention is compared with existing technology, its essential characteristic is: extract Folium glue wire with high speed waterpower beating crusher from Folium Eucommiae (or skin), thereby avoided loaded down with trivial details repeatedly pulverizing to filter, the steps such as processing have reduced the centrifugation that is difficult to operate.Waterpower beating crusher structure shown in Fig. 2 (a), (9) beating crusher urceolus wherein; (10) revolving vane sheet; (11) turning axle; (12) support; (13) motor.Fig. 2 (b) is the beating crusher schematic top view.This waterpower beating crusher cylindrical shell end section is easy to produce other geometricdrawing of eddy current in addition.All processes all carries out except boiling at normal temperatures, and step is few, device simple, cheap and easy to operate, thus reduced cost.
Hereby row are for two example two as follows:
Example 1: after getting 100 gram Folium Eucommiaes (amount to over dry leaf 81 gram) washings, fermentation, again through the 2%NaOH aqueous solution in 80 ℃ of boilings 135 minutes, after rinsing is clean, in the waterpower beating crusher, smashed 2 minutes, through the rinsing of sieving, get glue 3 grams.
Example 2: after getting 500 gram Folium Eucommiaes (amount to over dry leaf 400 gram) washes clean, fermentation through the boiling 120 minutes in 105 ℃ of steam cookers of the 1%NaOH aqueous solution, places the waterpower beating crusher to smash 3 minutes more again after the rinsing, through the rinsing of sieving, get glue 12 grams.
Test result:
Putting forward the glue rate is 3～4.The general Folium Eucommiae gel content of 4%(is 3～5%);
Product extracts with toluene, but the colloidal sol branch reaches more than 85%;
Insoluble matter is below 15%;
The softening temperature that differential thermal analysis records is 63 ℃.
Claims (3)
1, a kind of method of extracting gutta-percha, take Folium Eucommiae (or skin) as raw material, by washing, fermentation and boiling, dry flushing, waterpower is smashed, gutta-percha is extracted in the technical process of screen analysis rinsing and compound stalk forming, it is characterized in that the waterpower of carrying out high-speed eddy current type smashes, Folium glue wire dissociates; It is 2～20% that high-speed eddy current type waterpower is smashed concentration; It is below 50 ℃ that waterpower is smashed temperature; It is 20～80 meter per seconds that waterpower is smashed speed.
2, extraction gutta-percha method according to claim 1 is characterized in that having adopted high-speed eddy current type waterpower beating crusher; This machine drum body end face is the geometricdrawing that is easy to produce eddy current.
3, waterpower according to claim 1 is smashed speed, it is characterized in that the optimum velocity that waterpower is smashed is 30～50 meter per seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86100216A CN86100216B (en) | 1986-01-16 | 1986-01-16 | Gutta-percha extraction from eucommia leaves or barks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86100216A CN86100216B (en) | 1986-01-16 | 1986-01-16 | Gutta-percha extraction from eucommia leaves or barks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86100216A CN86100216A (en) | 1986-09-10 |
| CN86100216B true CN86100216B (en) | 1987-08-05 |
Family
ID=4800926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86100216A Expired CN86100216B (en) | 1986-01-16 | 1986-01-16 | Gutta-percha extraction from eucommia leaves or barks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86100216B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036724C (en) * | 1992-12-24 | 1997-12-17 | 中国科学院化学研究所 | Extracting method for gutta-percha |
| CN101157827B (en) * | 2007-09-27 | 2014-03-05 | 贵州大学 | Method for extracting filament gutta-percha from eucommia leaf and skin |
| JP5554897B2 (en) * | 2008-03-14 | 2014-07-23 | 日立造船株式会社 | Eucommia-derived biopolymer |
| CN102643610A (en) * | 2011-02-16 | 2012-08-22 | 严晓敏 | Production method for extracting natural polymer material from eucommia pericarp |
| CN111808298A (en) * | 2020-07-13 | 2020-10-23 | 中国科学院广州能源研究所 | Method for extracting gutta-percha from eucommia ulmoides by dilute acid hydrolysis |
-
1986
- 1986-01-16 CN CN86100216A patent/CN86100216B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN86100216A (en) | 1986-09-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| PB01 | Publication | ||
| CI01 | Correction of invention patent gazette |
Correction item: Inventor Correct: Chen Zengbo|Yan Ruifang|Wang Jingchun|Yang yun|Di Wenhui|Wei Shouzuo False: Chen Tanbo Number: 17 Page: 28 Volume: 2 |
|
| C06 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ERR | Gazette correction |
Free format text: CORRECT FROM: (INVENTOR)CHEN TANBO TO: CHEN ZENGBO YAN RUIFANG WANG JINGCHUN YANG YUN ZHAI WENHUIWEI SHOUZUO |
|
| 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 |