CN1013118B - High-elastic rubber products gutta percha - Google Patents
High-elastic rubber products gutta perchaInfo
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- CN1013118B CN1013118B CN 88103978 CN88103978A CN1013118B CN 1013118 B CN1013118 B CN 1013118B CN 88103978 CN88103978 CN 88103978 CN 88103978 A CN88103978 A CN 88103978A CN 1013118 B CN1013118 B CN 1013118B
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- rubber
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Abstract
The present invention relates to a high-elasticity rubber product of gutta-percha. The gutta-percha is an extract from gutta-percha trees as specific production forests in China, and the resources of the gutta-percha are extremely abundant. The high-elasticity rubber product uses the gutta-percha as a raw material prepared into soft high-elasticity rubber by adopting a specific formula. The gutta-percha can also be mixed with other types of rubber to be used as mixed modification rubber, and rubber products with unique properties can also be prepared.
Description
The invention belongs to the development and use of natural polymer goods and materials, it is the economic forest that utilizes China's uniqueness, and the gum-type extract of gutta-percha tree is a kind of feature raw material, is used for preparing softish snappiness modified rubber goods.
The gutta-percha tree extract mainly contains two kinds, and the one, property of medicine composition, the one, resinoid.The latter at room temperature is a kind of hard solid.Because its good insulating always as insulating material such as undersea cables, also can be used as other plastics surrogates.Though making over cure to it, attempts in the past.But owing to do not break through on the vulcanization process, though also can only obtain stiff solid through sulfuration.The present invention ties up on the high-elastic gonosome vulcanization process of relevant patent (DE3227757) the synthesis of trans polyisoprene basis, and the alltrans feature according to contained poly double-olefin in the gutta-percha adopts improved vulcanization system, and it is sulfided into the high-elastic gonosome of softish.Because the good thermoplasticity (its extruder die size conservation rate is also higher than synthesis of trans polyisoprene) of guttapercha and the low batch mixing power consumption that possesses thus, high green strength etc., make when preparing vulcanized rubber by guttapercha, can be easy to adopt such as: extrude mold pressing, lamination, injection moulding, multiple mode such as blowing is processed into various difform goods.Another characteristics of this glue are that dynamic in-fighting is low, therefore, develop it and make tire product, and will be up-and-coming.Because the room temperature hardening of guttapercha, though hot workability is good, but cold operation is poor, in order to improve this performance, can on larger proportion, change the rubber accelerator consumption,, can make bark of eucommia vulcanization system at room temperature possess visco-elasticity as introducing the larger proportion cis-1,4-polybutadiene rubber, owing to make matrigel, guaranteed that also the rubber system has high intensity simultaneously with guttapercha.
The suitable prescription of the present invention when preparation guttapercha rubber item is: guttapercha 100-20 weight part, rubber accelerator 0-80 weight part; Sulphur≤6 weight parts, sulfur containing promoter≤4 weight parts, ZnO≤4 weight parts, MgO≤4 weight parts, modifier≤10 weight parts, stearic acid≤10 weight parts, carbon black≤70 weight parts, anti-aging agent≤3 weight parts.
Above-mentioned system can with simple fabrication process common rubber processing with twin-roll machine on behind 70-110 ℃ of mixing, in 140-160 ℃ of heating, the rubber item that press vulcanization obtains requiring (is also availablely extruded mold pressing on press, lamination, injection moulding and blow molding obtain requiring the shape goods).
The natural bark of eucommia forest reserves of China are very abundant, present existing eucommia plantation field, area just has many places person more than thousand mu, developed rapidly again in recent years, but planting range almost comprised to the north of China Five Ridges the wide geographic area economized to Huanghe valley Shi Yu and can be on the hills, mountain area plantation, discord grain strive ground.If develop this type of natural gum energetically, will provide huge reserved resources (this work is subjected to common wealth fund commitee's Division of Chemistry and encourages and support) to China's rubber industry.
Embodiment 1:
Prescription: guttapercha 100 weight parts
Rubber accelerator
*6 weight parts
Sulphur 2.5 weight parts
Sulfur containing promoter
*2.5 weight part
ZnO 2 weight parts
MgO 2 weight parts
Carbon black 55 weight parts
Modifier
* *5 weight parts
Stearic acid 5 weight parts
Anti-aging agent
* * *1 weight part
Above-mentioned prescription is in that (this system has good extruder die size conservation rate and the film-forming properties that flows behind 70-100 ℃ of mixing on the twin-roll machine, therefore be suitable for extruding mold pressing, lamination, injection moulding, multiple molding modes such as blowing film forming) obtain requiring goods in 140-160 ℃ of press vulcanization.
Present embodiment gained mechanical property of vulcanized rubber:
Tensile strength 〉=180 kilograms per centimeter
2
Elongation at break 〉=400%
Residual set 〉=15%
300% tensile modulus 〉=120 kg/centimetre
2
The ※ rubber accelerator is introduced and is intended to make vulcanization system to be sulfided into effective cross-linking elasticity network, can use: natural rubber, styrene-butadiene rubber(SBR), cis-1,4-polybutadiene rubber, chloroprene rubber, isoprene-isobutylene rubber, ethylene-propylene rubber(EPR) etc. and polyester type, polyurethane-type, polyolefin-type thermoplastic elastomer.
※ ※ sulfur containing promoter is: DM(bisbenzothiazole disulphide), the M(2-benzothiazolyl mercaptan), the TMTD(tetramethyl-thiuram disulfide), the TMTT(tetramethylthiuram tetrasulfide), the TMTM(tetramethylthiuram monosulfide), AZ(N, diethyl-2-benzothiazole-sulfenamide), CZ(N-cyclohexyl-2-[4-morpholinodithio sulphenamide), DZ(N, N '-dicyclohexyl-2-[4-morpholinodithio sulphenamide)
The introducing of ※ ※ ※ modifier is intended to suppress effectively crystallization, can be: urethane resin, vibrin, resol, Resins, epoxy, polyamide resin, acrylic resin etc.
※ ※ ※ ※ anti-aging agent is: anti-ageing (N-phenyl-1-naphthylamine), anti-old fourth (N-phenyl-2-naphthylamines), 4010(N-cyclohexyl-N '-diphenyl-para-phenylene diamine) etc.
Embodiment 2:
Prescription: guttapercha 55 weight parts
Cis-1,4-polybutadiene rubber
*45 weight parts
Sulphur 2.5 weight parts
Sulfur containing promoter
*2.5 weight part
ZnO 2 weight parts
MgO 2 weight parts
Carbon black 50 weight parts
Modifier
* *5 weight parts
Stearic acid 5 weight parts
Anti-aging agent ※ ※ ※ ※ 1 weight part
Mechanical property when this system is not vulcanized and pure gutta-percha and the contrast of pure cis-butadiene cement:
Bark of eucommia system is not vulcanized in the pure cis-butadiene cement modification of pure gutta-percha
Tensile strength, kilograms per centimeter
2＞260＜10＞100
Elongation at break %＞500＜50＞200
Hardness＞98＜30-60
Feature hardness too high strength too soft and intensity are suitable
As seen this system had both overcome the very much not easy-operating shortcoming of pure gutta-percha room temperature hardness, and enough green strengths are arranged, and conveniently carried out various processing.This system on the twin-roll machine behind 70-100 ℃ of mixing, on press in 140-160 ℃ of heating and pressurizing (or other equipment) sulfuration, i.e. the goods that must ask, its performance:
Tensile strength 〉=200 kilograms per centimeter
2
Elongation at break 〉=500%
Residual set 〉=20%
300% tensile modulus 〉=110 kilograms per centimeter
2
Annotate: used each * of (1) present embodiment, * *, * * *, * * * * symbol illustrates identical with embodiment 1
(2) sulfur containing promoter scope 2-3 weight part; ZnO 1-2 weight part, modifier 3-6 weight part; (because of producer originates different different)
(3) the used vulcanization system prescription of the present invention also is applicable to synthesis of trans-polyisoprene.
Claims (7)
1, a kind of rubber item, it is characterized in that (a) is the raw material of feature component with the guttapercha, (b) workability prescription that is mixed with and the high-elastic rubber products gutta percha of (c) preparing burden and making through sulfuration processing, said raw material is by guttapercha, rubber accelerator, Sulfur, sulfur containing promoter, zinc oxide, magnesium oxide, modifier, stearic acid, carbon black, anti-aging agent is formed, the said easy processing formula wherein proportioning content range of each material component is a bark of eucommia resin 100-20 weight part, rubber accelerator 0-80 weight part, Sulfur 0.5-6 weight part, sulfur containing promoter 0.5-4 weight part, zinc oxide 0.5-6 weight part, magnesium oxide 0.5-4 weight part, modifier 0.5-10 weight part, stearic acid 1-10 weight part, carbon black 20-70 weight part, anti-aging agent 1-3 weight part, its elongation at break of said high-elastic rubber products gutta percha 400-500%, residual set 15-20%, 300% tensile modulus 110-120 kg/cm, tensile strength are the 180-220 kg/cm.
2, rubber item as claimed in claim 1, it is characterized in that said rubber accelerator is natural rubber, cis-1,4-polybutadiene rubber, chloroprene rubber, styrene-butadiene rubber(SBR), isoprene-isobutylene rubber, ethylene-propylene rubber(EPR) and polyester type, polyurethane-type, polyolefin-type thermoplastic elastomer, sulfur containing promoter is ※ M, DM, TMTD, TMTM, TMTT, AZ, CZ, DZ, and modifier is polyamide resin, vibrin, urethane resin, resol, Resins, epoxy, acrylic resin.
3, a kind of manufacture method of rubber product, it is characterized in that (a) adopts with the guttapercha is the raw material of characteristic component, (b) the easy processing formula that is made into by each material component, and (c) batching through the operation of sulfuration processing and manufacturing high-elastic rubber products, said raw material is by the Chinese gutta percha additive, Sulfur, sulfur containing promoter, zinc oxide, magnesium oxide, modifier, stearic acid, carbon black, anti-aging agent is formed, content (parts by weight) proportional range of each component is a guttapercha 100-20 weight part in the said prescription that easily processes raw material, rubber accelerator 0-80 weight part, Sulfur 0.5-6 weight part, sulfur containing promoter 0.5-4 weight part, zinc oxide 0.5-4 weight part, magnesium oxide 0.5-4 weight part, modifier 0.5-10 weight part, stearic acid 1-10 weight part, carbon black 20-70 weight part, anti-aging agent 1-3 weight part, said batching sulfuration manufacturing procedure is to adopt extruding or mold pressing, lamination, injection moulding and blowing processing and forming technology, for example on the twin-roll machine behind 70-110 ℃ of mixing press vulcanization on thermocompressor again, obtain the product of desired shape.
4, the method for making of rubber product as claimed in claim 3, it is characterized in that said rubber accelerator is natural rubber, cis-1,4-polybutadiene rubber, chloroprene rubber, styrene-butadiene rubber(SBR), isoprene-isobutylene rubber, ethylene-propylene rubber(EPR) and polyester type, polyurethane-type, polyolefin-type thermoplastic elastomer, sulfur containing promoter is ※ M, DM, TMTD, TMTM, TMTT, AZ, CZ, DZ, and modifier is polyamide resin, vibrin, urethane resin, resol, Resins, epoxy, acrylic resin.
5, the method for making of rubber product as claimed in claim 3, it is characterized in that it is gutta-percha 100 weight parts, rubber accelerator 6 weight parts, Sulfur 2.5 weight parts, sulfur containing promoter 2.5 weight parts, zinc oxide 2 weight parts, magnesium oxide 2 weight parts, carbon black 55 weight parts, modifier 5 weight parts, stearic acid 5 weight parts, anti-aging agent 1 weight part that improvement sulfuration workability raw material is formed best proportioning, this formula material is made product through mixing the sulfuration processing and forming technology.
6, the method for making of rubber product as claimed in claim 3, to form proportioning be bark of eucommia resin 55 weight parts, cis-1,4-polybutadiene rubber 45 weight parts, Sulfur 2.5 weight parts, sulfur containing promoter 2.5 weight parts, zinc oxide 2 weight parts, magnesium oxide 2 weight parts, carbon black 55 weight parts, modifier 5 weight parts, stearic acid 5 weight parts, anti-aging agent 1 weight part to the optimum feed stock of ease for operation in the manufacturing process that it is characterized in that improving, through mixing, sulfuration machine-shaping must close, vulcanize machine-shaping obtains product than batching.
7, rubber item as claimed in claim 1 and method for making thereof is characterized in that best mixture temperature 80-100 ℃, and the optimum cure temperature is 140-160 ℃.
※ sulfur containing promoter M=2-benzothiazolyl mercaptan
DM=bisbenzothiazole disulphide
The TMTD=tetramethyl-thiuram disulfide
The TMTM=tetramethylthiuram monosulfide
The TMTT=tetramethylthiuram tetrasulfide
AZ=N-second-2-[4-morpholinodithio time iodoxy amine
CZ=N-cyclohexyl-2-[4-morpholinodithio sulphenamide
DZ=N, N'-two ring ethyl-2-[4-morpholinodithio sulphenamides
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103978 CN1013118B (en) | 1988-07-04 | 1988-07-04 | High-elastic rubber products gutta percha |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103978 CN1013118B (en) | 1988-07-04 | 1988-07-04 | High-elastic rubber products gutta percha |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1039254A CN1039254A (en) | 1990-01-31 |
| CN1013118B true CN1013118B (en) | 1991-07-10 |
Family
ID=4832839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88103978 Expired CN1013118B (en) | 1988-07-04 | 1988-07-04 | High-elastic rubber products gutta percha |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1013118B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1038821C (en) * | 1992-12-24 | 1998-06-24 | 中国科学院化学研究所 | Gutta-percha fixing joint pipe and making method |
| CN100425643C (en) * | 2005-03-18 | 2008-10-15 | 西北工业大学 | Gross rubber for high wearable tyre and its prepn. |
| CN101284918B (en) * | 2007-11-09 | 2011-03-09 | 西北工业大学 | Shape memory functional material with gutta percha and method for preparing same |
| CN103159986A (en) * | 2011-12-19 | 2013-06-19 | 北京橡胶工业研究设计院 | Composition for positive photoresist rubber of red high elasticity high hardness table tennis bats |
| CN104085339A (en) * | 2014-05-26 | 2014-10-08 | 安徽红桥金属制造有限公司 | Spring handgrip for bus |
| CN104546506B (en) * | 2014-11-24 | 2017-09-22 | 中南大学湘雅二医院 | A kind of gutta-percha is combined soft liner materials for denture and preparation method thereof |
| CN104546505B (en) * | 2014-11-24 | 2017-08-25 | 中南大学湘雅二医院 | A kind of biocidal property soft liner materials for denture and its application |
| CN104814240B (en) * | 2015-04-20 | 2018-05-15 | 沈阳化工大学 | A kind of preparation method of Gettama gum chewing gum matrix |
| CN106928505B (en) * | 2015-12-31 | 2018-12-28 | 天津市橡胶工业研究所有限公司 | A kind of high rigidity electro-insulating rubber and preparation method |
| CN105778173B (en) * | 2016-04-12 | 2018-03-13 | 沈阳化工大学 | A kind of method that gutta-percha prepares TPV with polyolefin elastomer |
| CN106364078B (en) * | 2016-08-25 | 2018-06-26 | 青岛科技大学 | MULTILAYER COMPOSITE medical splint material and preparation method thereof |
| CN107083053B (en) * | 2017-01-25 | 2020-09-29 | 北京老爹杜仲胶集成材料研究院有限公司 | Puncture-proof and smash-proof bulletproof composition |
| CN108912413A (en) * | 2018-04-17 | 2018-11-30 | 镇江科特新材料有限公司 | High elastic rubber processing method |
| CN108929470B (en) * | 2018-08-29 | 2020-12-11 | 三斯达（江苏）环保科技有限公司 | Anti-aging rubber composition and preparation method thereof |
| CN113354940B (en) * | 2021-08-10 | 2021-11-05 | 佛山市湘聚新材料有限公司 | High-elasticity thermoplastic rubber and preparation method thereof |
| CN115025283B (en) * | 2022-06-14 | 2023-08-08 | 上海洲康医疗器械有限公司 | Thermosensitive fallopian tube and preparation method thereof |
-
1988
- 1988-07-04 CN CN 88103978 patent/CN1013118B/en not_active Expired
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| Publication number | Publication date |
|---|---|
| CN1039254A (en) | 1990-01-31 |
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| 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) | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
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