CN112175203A - Preparation method of natural gutta-percha emulsion - Google Patents
Preparation method of natural gutta-percha emulsion Download PDFInfo
- Publication number
- CN112175203A CN112175203A CN202011217235.8A CN202011217235A CN112175203A CN 112175203 A CN112175203 A CN 112175203A CN 202011217235 A CN202011217235 A CN 202011217235A CN 112175203 A CN112175203 A CN 112175203A
- Authority
- CN
- China
- Prior art keywords
- percha
- gutta
- emulsion
- parts
- preparation
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
- C08J3/07—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from polymer solutions
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C1/00—Treatment of rubber latex
- C08C1/02—Chemical or physical treatment of rubber latex before or during concentration
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2307/00—Characterised by the use of natural rubber
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a preparation method of natural gutta-percha emulsion, which comprises the following steps: freezing eucommia seed shell, leaf or bark at low temperature, pulverizing, sieving, dissolving, extracting, and separating to obtain eucommia ulmoides gum solution; adding the gutta-percha glue solution into a glass reaction kettle, adding an oily emulsifier and an antioxidant, and stirring to obtain a gutta-percha coarse emulsion; adding the aqueous emulsifier, the pH regulator, the mechanical stabilizer and the soft water into a reaction kettle, heating, adding the gutta percha crude emulsion, distilling, shearing and emulsifying; and finally standing the emulsion, and filtering to obtain the natural gutta-percha emulsion. In the preparation process, the dissolving glue solution is directly used for emulsification, so that the procedures of solidification, solvent removal, drying and the like of the gutta percha glue solution in the extraction process are omitted, the using amount of the solvent is reduced, the solvent loss is relatively reduced, the energy consumption is reduced, and the cost is saved; meanwhile, the same solvent is adopted for extracting the gel and emulsifying, the process is simple and convenient, the operation is easy, and the large-scale production is facilitated.
Description
Technical Field
The invention belongs to the field of eucommia ulmoides rubber latex, and particularly relates to a preparation method of natural eucommia ulmoides rubber latex.
Background
The gutta-percha is derived from eucommia trees and mainly exists in eucommia leaves, cortex and seeds, wherein the glue content of the leaves is 2-4%, the glue content of the cortex is 8-10%, and the glue content of the seeds is 10-30%, so that the gutta-percha is a precious high-quality natural rubber resource in the world. At present, the cultivation area of eucommia bark in ChinaAbout 35 kilohm2The eucommia ulmoides oliv planting method accounts for more than 99% of the total planting area of the eucommia ulmoides oliv in the world, and has unique resource advantages. Gutta percha is also known as gutta or balata, because it contains trans-1, 4-polyisoprene as do the gutta percha (palaquium gutta) and balata (mimusops balata) in the tropical rainforest of south-east asia. The chemical composition of the gutta-percha is the same as that of natural rubber, but the gutta-percha is structurally isomer, the difference of the two structures causes the difference of macroscopic performance, the natural rubber is a good elastomer, and the gutta-percha is a crystalline hard material.
The eucommia ulmoides gum is a plastic with memory characteristics, and has excellent hydrolysis resistance, mildew and rot resistance, and acid, alkali and salt corrosion resistance; its tan-T curve exhibits bimodal characteristics, with tan peaks in the medium-high temperature region exceeding those of other rubbers. The gutta-percha is a natural polymer material, has no toxic or side effect, and does not have the catalyst residue problem commonly existing in synthetic polymers. Therefore, gutta-percha has been widely used in the fields of various shock-absorbing members, noise-reducing members, medical instruments, etc., in the fields of gas transmission, water transmission, and oil pipeline laying at the sea bottom, lake bottom, river bottom, and deep underground. Meanwhile, the gutta-percha has the advantages of high elasticity, low heat generation, tearing resistance, puncture resistance and the like due to the fact that the gutta-percha is soft and smooth in macromolecular chain, good in elasticity, regular in macromolecular chain, small in internal friction, low in heat generation and easy to crystallize in gutta-percha macromolecule, exists in the vulcanized blended rubber in a microcrystal phase, and can be torn and bent when cracks occur, and therefore the gutta-percha is tear-resistant and puncture-resistant, and has a great prospect in the application aspect of green tires due to the fact that the gutta-percha is added into the tires in a certain proportion. However, the eucommia ulmoides rubber has plastic characteristics, so that the eucommia ulmoides rubber has poor compatibility when being blended with other rubber, and the physical and mechanical properties such as tensile strength, tear strength and the like of the blended rubber are not ideal, so that more researches are required for industrial application in the aspect of tires.
The main component of the gutta-percha molecular chain is trans-1, 4-polyisoprene, but the gutta-percha molecular chain is not completely the same as the artificially synthesized structure, and the molecular chain of the gutta-percha is blocked by a hydrophilic ester group, so that the structural characteristic endows the gutta-percha with certain water solubility. After the eucommia ulmoides latex is converted into the latex, the compatibility of the eucommia ulmoides latex can be improved when the eucommia ulmoides latex is blended with other rubber latex, the physical and mechanical properties of the blended rubber are improved, and the eucommia ulmoides latex can also be used in an expanded application field such as coating, for example, the eucommia ulmoides latex can be endowed with excellent air tightness, oil resistance, adhesion, wet and skid resistance and other properties by carrying out epoxidation modification on the latex.
At present, the emulsification method of the eucommia ulmoides gum is to plasticate extracted solid eucommia ulmoides gum, dissolve the solid eucommia ulmoides gum in an organic solvent and emulsify the gum solution, and the method has good emulsification effect, but in the process of extracting the gum, the eucommia ulmoides gum solution needs to be solidified, the used solvent needs to be removed, and the drying needs to be carried out for a plurality of working procedures, so that the cost of the eucommia ulmoides latex is increased, and the popularization, the application and the range of the eucommia ulmoides latex are limited to a certain extent.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects and shortcomings in the background art and provide a preparation method of natural gutta-percha emulsion.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a preparation method of natural gutta-percha emulsion comprises the following steps:
(1) freezing eucommia seed shell, leaf or bark at low temperature, pulverizing, sieving, dissolving, extracting, and separating to obtain eucommia ulmoides gum solution;
(2) adding the gutta-percha glue solution into a glass reaction kettle, adding an oily emulsifier and an antioxidant, and stirring for 3-5 hours at the rotating speed of 300-500 r/min and the temperature of 60-90 ℃ to obtain a gutta-percha coarse emulsion;
(3) adding an aqueous emulsifier, a pH regulator, a mechanical stabilizer, a defoaming agent, an anti-web agent and soft water into a reaction kettle, heating to 60-95 ℃, adding an gutta percha crude emulsion, distilling under the conditions of stirring speed of 300-500 r/min and vacuum degree of-0.03 MPa-0.08 MPa for 4-12 hours, converting a mixed solution from an oil phase into a water phase, and emulsifying at a shearing speed of 7000-9000 r/min for 10-20 minutes to obtain an aqueous emulsion;
(4) and finally standing the emulsion for 24 hours, and filtering to obtain the natural gutta-percha emulsion.
In the preparation method, preferably, in the step (2), the addition amounts of the raw materials are as follows: 100 parts of gutta-percha liquid glue, 1.0-5.0 parts of oily emulsifier and 1.0-3.0 parts of antioxidant.
In the above preparation method, preferably, in the step (2), the oily emulsifier is one of sorbitan monolaurate (trade name: span 20), sorbitan monopalmitate (trade name: span 40), sorbitan monostearate (trade name: span 60), sorbitan monooleate (trade name: span 80) and oleic acid;
the antioxidant is one of N-phenyl-B-naphthylamine (antioxidant D), 2-mercaptobenzimidazole (antioxidant MB), 2, 4-trimethyl-1, 2-dihydroquinoline polymer (antioxidant RD), N '-di (beta-naphthyl) p-phenylenediamine (antioxidant DNP), 2' -methylene bis (4-methyl-6-nonylphenol) and styrenated phenol (antioxidant SP).
In the preparation method, preferably, in the step (3), the addition amounts of the raw materials are as follows: 50-100 parts of eucommia ulmoides gum crude emulsion, 5-10 parts of water-based emulsifier, 5-10 parts of pH regulator, 0.5-1.0 part of mechanical stabilizer, 0.01-0.1 part of defoamer, 0.01-0.1 part of web inhibitor and 450-990 parts of soft water.
In the above preparation method, preferably, the aqueous emulsifier is one of ammonium oleate, potassium oleate, triethanolamine oleate, aromatic polyethylene glycol-alcohol ether, polyether polysulfide, sodium alkylsulfate, sodium dibutylnaphthalenesulfonate, sodium isobutylnaphthalenesulfonate, sodium dioctylsulfosuccinate, adduct of ethylene oxide with fatty alcohol, polyoxyethylene sorbitan monolaurate (trade name tween 20), polyoxyethylene sorbitan monopalmitate (trade name tween 40), polyoxyethylene sorbitan monostearate (trade name tween 60), polyoxyethylene sorbitan monooleate (trade name tween 80);
the mechanical stabilizer is one of potassium hydroxide, sodium hydroxide, potassium laurate, ammonium laurate, sodium dodecyl sulfate, sodium vinylsulfonate, N-methyl-N-oleoyl taurate, a condensate of ethylene oxide and fatty alcohol (peregal 0) and octyl phenyl polyoxyethylene ether (trade name 65-03).
In the above preparation method, preferably, the pH regulator is potassium hydroxide or sodium hydroxide;
the defoaming agent is one of an organic siloxane emulsion defoaming agent, a polysiloxane polyether copolymer defoaming agent, a mixture of sec-octanol isomeric methylcyclohexanol and 201-100 methylsilicone, a defoaming agent 691, a defoaming agent WBA and a defoaming agent 8034A;
the web-resistant agent is any one of n-butyl alcohol and lanolin.
Preferably, in the preparation method, in the step (1), the specific preparation process of the eucommia ulmoides gum solution is as follows: freezing eucommia seed shells, leaves or barks at the temperature of-1 ℃ to-20 ℃ for 30-60 minutes, then crushing in a high-speed crusher, and sieving to control the particle size of powder to be less than 0.5 mm; and dissolving the extraction powder for 4-6 hours by using an organic solvent at the temperature of 60-95 ℃ and the stirring speed of 300-500 r/min, centrifuging the extraction liquid, and filtering to obtain the eucommia ulmoides gum solution.
In the above production method, the organic solvent is preferably at least one selected from the group consisting of petroleum ether, cyclohexane, toluene, xylene, decalin and gasoline.
According to the preparation method, the solid content of the prepared natural gutta-percha emulsion is preferably 5-30%.
Compared with the prior art, the invention has the advantages that:
(1) in the preparation process, the dissolving glue solution is directly used for emulsification, so that the procedures of solidification, solvent removal, drying and the like of the gutta percha glue solution in the extraction process are omitted, the using amount of the solvent is reduced, the solvent loss is relatively reduced, the energy consumption is reduced, and the cost is saved; meanwhile, the same solvent is adopted for extracting the gel and emulsifying, the process is simple and convenient, the operation is easy, and the large-scale production is facilitated.
(2) In the preparation process, the eucommia seed shells, leaves or barks are frozen before being dipped in the organic solvent, so that the brittleness of materials is improved, and the materials are convenient to crush; replace traditional mill high temperature plastication with smashing, reduce the molecular weight of gutta-percha to sieve kibbling material, come control molecular weight size through the size of control kibbling material particle diameter, can increase the contact surface of powder and organic solvent like this, improve the solubility of gutta-percha at organic solvent, improve the emulsifying property of gutta-percha and the stability of latex.
(3) In the preparation process, the organic solvent adopted in the emulsification process can be recovered by a distillation method, the recovery rate and the purity are high, the recovered solvent can be continuously used for next rubber extraction of eucommia seed shells and the like and emulsification of eucommia rubber, the solvent can be truly recycled, and the environmental pollution is reduced.
Detailed Description
In order to facilitate an understanding of the present invention, the present invention will be described more fully and in detail with reference to the preferred embodiments, but the scope of the present invention is not limited to the specific embodiments below.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
Example 1 (preparation of gutta percha latex with 15% solids):
the preparation method of the natural gutta-percha emulsion comprises the following steps:
(1) freezing 400 parts of eucommia seed shells at the temperature of minus 5 ℃ for 40 minutes, then crushing the eucommia seed shells in a high-speed crusher, and sieving the eucommia seed shell powder to control the particle size of the eucommia seed shell powder to be less than 0.5 mm; dissolving eucommia seed shell powder by using 1000 parts of cyclohexane at 70 ℃ and at the stirring speed of 500r/min, extracting for 5 hours, centrifuging the extract liquid for 5 minutes by using a high-speed centrifuge at the speed of 3500r/min, and filtering the eucommia ulmoides gum extract liquid by using 40-mesh nylon cloth to obtain eucommia ulmoides gum liquid with the solid content of 10%;
(2) taking 1000 parts of the eucommia ulmoides gum solution with the solid content of 10% prepared in the step (1), adding the eucommia ulmoides gum solution into a glass reaction kettle, adding 3.5 parts of oleic acid, 1.0 part of span 80 and 1.5 parts of an anti-aging agent SP, and stirring for 5 hours at the rotation speed of 500r/min and the temperature of 70 ℃ to obtain a eucommia ulmoides gum crude emulsion;
(3) adding 5 parts of water-based emulsifier triethanolamine, 5 parts of pH regulator potassium hydroxide, 0.5 part of mechanical stabilizer potassium laurate, 0.05 part of defoamer WBA, 0.1 part of webbed agent n-butanol and 1100 soft water into a reaction kettle, heating to 70 ℃, adding the eucommia ulmoides gum crude emulsion prepared in the step (2), distilling at the stirring speed of 500r/min and the vacuum degree of not more than-0.05 MPa, and emulsifying for 15 minutes at the shearing speed of 8500r/min when the mixed solution is converted into a water phase from an oil phase after distilling for 6 hours, so that the mixed solution becomes a water-based emulsion;
(4) standing the emulsified liquid for 24 hours, and filtering to obtain the gutta-percha latex with the solid content of 15%.
Example 2 (preparation of gutta percha latex with 25% solids):
the preparation method of the natural gutta-percha emulsion comprises the following steps:
(1) freezing 400 parts of eucommia seed hulls at the temperature of minus 5 ℃ for 40 minutes, then crushing the eucommia seed hulls in a high-speed crusher, sieving the eucommia seed hull powder to control the particle size to be below 0.5mm, dissolving the eucommia seed hull powder by 1250 parts of petroleum ether at the temperature of 70 ℃ and the stirring speed of 500r/min, extracting for 5 hours, centrifuging the extract liquid for 5 minutes by using a high-speed centrifuge at the speed of 3500r/min, and then filtering the eucommia ulmoides gum extract liquid by using 40-mesh nylon cloth to obtain eucommia ulmoides gum liquid with the solid content of 8 percent;
(2) 1250 parts of the eucommia ulmoides gum solution with the solid content of 8% prepared in the step (1) are added into a glass reaction kettle, then 4.0 parts of span 80 and 1.5 parts of an anti-aging agent SP are added, and the mixture is stirred for 5 hours at the rotating speed of 500r/min and the temperature of 70 ℃ to obtain a eucommia ulmoides gum crude emulsion;
(3) adding 5 parts of aqueous emulsifier sodium dodecyl sulfate, 2 parts of Tween 40, 5 parts of pH regulator potassium hydroxide, 0.5 part of mechanical stabilizer potassium laurate, 0.05 part of defoamer WBA, 0.1 part of webbed agent n-butanol and 1400 parts of soft water into a reaction kettle, heating to 70 ℃, adding the eucommia ulmoides gum crude emulsion obtained in the step (2), distilling at the stirring speed of 500r/min and the vacuum degree of not more than-0.06 MPa, and emulsifying for 10min at the shearing speed of 8500r/min when the mixed solution is converted into a water phase from an oil phase after distilling for 10 hours, so that the mixed solution is changed into an aqueous emulsion;
(4) standing the emulsified liquid for 24 hours, and filtering to obtain the gutta-percha latex with the solid content of 25%.
Comparative example (preparation of gutta percha latex with 25% solids):
the preparation process of the eucommia ulmoides latex of this comparative example was as follows:
(1) dissolving and extracting 400 parts of eucommia ulmoides seed shells by 1250 parts of petroleum ether at the temperature of 70 ℃ to obtain a crude eucommia ulmoides liquid glue;
(2) filtering the coarse eucommia ulmoides gum solution obtained in the step (1) by using 40-mesh nylon cloth, cooling the gum solution to below 20 ℃, separating the gum from seed shell scraps, and solidifying the eucommia ulmoides gum;
(3) in the solidified gutta percha, the weight ratio of 1: adding soft water at a ratio of 1, distilling at 70 deg.C and vacuum degree of-0.05 MPa for 6 hr, and removing solvent;
(4) drying the gutta-percha without the solvent in an oven at the temperature of 60 ℃ for 10 hours to obtain dried gutta-percha;
(5) plasticating 100 parts of dried eucommia ulmoides gum on an open mill, then slicing, adding into a glass reaction kettle, adding 4 parts of span 80, 1.5 parts of antioxidant SP and 1244.5 parts of petroleum ether, and stirring at the rotation speed of 500r/min and the temperature of 75 ℃ for 5 hours to obtain a gum solution with the solid content of 8%;
(6) adding 5 parts of aqueous emulsifier sodium dodecyl sulfate, 2 parts of Tween 40, 5 parts of pH regulator potassium hydroxide, 0.5 part of mechanical stabilizer potassium laurate, 0.05 part of defoamer WBA, 0.1 part of webbed agent n-butanol and 1400 parts of soft water into a reaction kettle, heating to 70 ℃, adding the glue solution prepared in the step (5), distilling at the stirring speed of 500r/min and the vacuum degree of not more than-0.06 MPa, and emulsifying for 10 minutes at the shearing speed of 8500r/min when the mixed solution is converted into a water phase from an oil phase after distilling for 10 hours to obtain an aqueous emulsion;
(7) standing the emulsified emulsion for 24 hours, and filtering to obtain the gutta-percha latex with the solid content of 25%.
The energy consumption and solvent loss for the preparation of gutta percha latex in table 1 were recorded and tested as shown in table 1.
Table 1: energy consumption and solvent loss and latex Performance comparison
| Item | Example 1 | Example 2 | Comparative example | Inspection method |
| 100 grams of electricity consumed by the energy source, W | 3.5 | 5 | 18 | / |
| Solvent recovery rate% | 96.5 | 95 | 75 | / |
| The conversion rate of the eucommia ulmoides latex | 99.4 | 99.2 | 92 | / |
| Total solid content (mass fraction) a,%, minimum | 18.2 | 28.5 | 22.0 | GB/T8298 |
| Mechanical stability s, minimum | 910 | 900 | 870 | GB/T8301 |
| Residue content (mass fraction)/%, maximum | 0.10 | 0.10 | 0.15 | GB/T8293 |
| KOH number, maximum | 1.15 | 1.20 | 1.22 | GB/T8297 |
| Average particle size (nm), maximum | 970 | 980 | 990 | / |
As can be seen from the comparison of the test results of the example 2 and the comparative example in table 1, the energy consumption of the preparation method of the natural gutta percha emulsion in the example 2 of the present invention is reduced by 2.5 times compared with the comparative example, the solvent recovery rate is improved by 20%, the conversion rate of the gutta percha latex is improved by 7.2%, the total solid content is improved by 6.5%, the average particle size of the emulsified latex is reduced, the mechanical stability is improved, the residue content is reduced, and the KOH value is not changed greatly.
Claims (9)
1. The preparation method of the natural gutta-percha emulsion is characterized by comprising the following steps of:
(1) freezing eucommia seed shell, leaf or bark at low temperature, pulverizing, sieving, dissolving, extracting, and separating to obtain eucommia ulmoides gum solution;
(2) adding the gutta-percha glue solution into a glass reaction kettle, adding an oily emulsifier and an antioxidant, and stirring for 3-5 hours at the rotating speed of 300-500 r/min and the temperature of 60-90 ℃ to obtain a gutta-percha coarse emulsion;
(3) adding a water-based emulsifier, a pH regulator, a mechanical stabilizer, a defoaming agent, an anti-web agent and soft water into a reaction kettle, heating to 60-95 ℃, adding an gutta-percha coarse emulsion, distilling under the conditions that the stirring speed is 300-500 r/min and the vacuum degree is-0.03 MPa-0.08 MPa, and after distilling for 4-12 hours, when the mixed solution is converted into a water phase from an oil phase, shearing and emulsifying;
(4) and finally standing the emulsion for 24 hours, and filtering to obtain the natural gutta-percha emulsion.
2. The preparation method according to claim 1, wherein in the step (2), the addition amount of each raw material is, in parts by weight: 100 parts of gutta-percha liquid glue, 1.0-5.0 parts of oily emulsifier and 1.0-3.0 parts of antioxidant.
3. The method according to claim 2, wherein in the step (2), the oily emulsifier is one of sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan monooleate, and oleic acid;
the antioxidant is one of N-phenyl-B-naphthylamine, 2-mercaptobenzimidazole, 2, 4-trimethyl-1, 2-dihydroquinoline polymer, N '-di (beta-naphthyl) p-phenylenediamine, 2' -methylenebis (4-methyl-6-nonylphenol) and styrenated phenol.
4. The preparation method according to claim 1, wherein in the step (3), the addition amount of each raw material is, in parts by weight: 50-100 parts of eucommia ulmoides gum crude emulsion, 5-10 parts of water-based emulsifier, 5-10 parts of pH regulator, 0.5-1.0 part of mechanical stabilizer, 0.01-0.1 part of defoamer, 0.01-0.1 part of web inhibitor and 450-990 parts of soft water.
5. The method of claim 4, wherein the aqueous emulsifier is one of ammonium oleate, potassium oleate, triethanol oleate, aromatic polyethylene glycol ether, polyether polysulfide, sodium alkyl sulfate, sodium dibutyl naphthalene sulfonate, sodium isobutyl naphthalene sulfonate, sodium dioctyl sulfosuccinate, adduct of ethylene oxide and fatty alcohol, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, and polyoxyethylene sorbitan monooleate;
the mechanical stabilizer is one of potassium hydroxide, sodium hydroxide, potassium laurate, ammonium laurate, sodium dodecyl sulfate, sodium vinylsulfonate, N-methyl-N-oleoyl taurate, a condensate of ethylene oxide and fatty alcohol, and octyl phenyl polyoxyethylene ether.
6. The method according to claim 4, wherein the pH adjuster is potassium hydroxide or sodium hydroxide;
the defoaming agent is one of an organic siloxane emulsion defoaming agent, a polysiloxane polyether copolymer defoaming agent, a mixture of sec-octanol isomeric methylcyclohexanol and 201-100 methylsilicone, a defoaming agent 691, a defoaming agent WBA and a defoaming agent 8034A;
the web-resistant agent is any one of n-butyl alcohol and lanolin.
7. The preparation method according to any one of claims 1 to 6, wherein in the step (1), the specific preparation process of the eucommia ulmoides gum solution is as follows: freezing eucommia seed shells, leaves or barks at the temperature of-1 ℃ to-20 ℃ for 30-60 minutes, then crushing in a high-speed crusher, and sieving to control the particle size of powder to be less than 0.5 mm; and dissolving the extraction powder for 4-6 hours by using an organic solvent at the temperature of 60-95 ℃ and the stirring speed of 300-500 r/min, centrifuging the extraction liquid, and filtering to obtain the eucommia ulmoides gum solution.
8. The method according to claim 7, wherein the organic solvent is at least one selected from the group consisting of petroleum ether, cyclohexane, toluene, xylene, decalin and gasoline.
9. The method according to any one of claims 1 to 6, wherein the natural gutta percha emulsion is prepared with a solid content of 5 to 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011217235.8A CN112175203B (en) | 2020-11-04 | 2020-11-04 | Preparation method of natural gutta-percha emulsion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011217235.8A CN112175203B (en) | 2020-11-04 | 2020-11-04 | Preparation method of natural gutta-percha emulsion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112175203A true CN112175203A (en) | 2021-01-05 |
| CN112175203B CN112175203B (en) | 2022-11-22 |
Family
ID=73917007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011217235.8A Active CN112175203B (en) | 2020-11-04 | 2020-11-04 | Preparation method of natural gutta-percha emulsion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112175203B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1775569A (en) * | 1922-12-02 | 1930-09-09 | Dispersions Process Inc | Aqueous emulsion of rubber, balata, or gutta-percha and process of producing the same |
| CN1252215A (en) * | 1998-10-27 | 2000-05-10 | 杨振堂 | Gettama callus inducing and gettma gum extracting method |
| CN105670001A (en) * | 2016-01-25 | 2016-06-15 | 吉首大学 | Method for extracting eucommia ulmoides gum from eucommia ulmoides shell |
| CN106084252A (en) * | 2016-08-12 | 2016-11-09 | 曹蕊 | A kind of method extracting gutta-percha in Folium Eucommiae skin |
| CN107602877A (en) * | 2017-09-05 | 2018-01-19 | 青岛科技大学 | A kind of preparation method of synthetic guttapercha breast |
| CN108424530A (en) * | 2018-03-14 | 2018-08-21 | 中国化工株洲橡胶研究设计院有限公司 | A kind of preparation method of Cortex Eucommiae latex |
-
2020
- 2020-11-04 CN CN202011217235.8A patent/CN112175203B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1775569A (en) * | 1922-12-02 | 1930-09-09 | Dispersions Process Inc | Aqueous emulsion of rubber, balata, or gutta-percha and process of producing the same |
| CN1252215A (en) * | 1998-10-27 | 2000-05-10 | 杨振堂 | Gettama callus inducing and gettma gum extracting method |
| CN105670001A (en) * | 2016-01-25 | 2016-06-15 | 吉首大学 | Method for extracting eucommia ulmoides gum from eucommia ulmoides shell |
| CN106084252A (en) * | 2016-08-12 | 2016-11-09 | 曹蕊 | A kind of method extracting gutta-percha in Folium Eucommiae skin |
| CN107602877A (en) * | 2017-09-05 | 2018-01-19 | 青岛科技大学 | A kind of preparation method of synthetic guttapercha breast |
| CN108424530A (en) * | 2018-03-14 | 2018-08-21 | 中国化工株洲橡胶研究设计院有限公司 | A kind of preparation method of Cortex Eucommiae latex |
Non-Patent Citations (1)
| Title |
|---|
| XIN XIN ET AL.: ""Preparation of synthetic gutta-percha crude latex"", 《合成橡胶工业》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112175203B (en) | 2022-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108424530B (en) | Preparation method of eucommia ulmoides latex | |
| US4435337A (en) | Process for extracting rubber and by-products from guayule and guayule-like shrubs | |
| EP0039910B1 (en) | Process for extracting rubber and by-products from guayule and guayule-like shrubs | |
| US4684715A (en) | Extraction of rubber and/or resin from rubber containing plants with a monophase solvent mixture | |
| EP3390460B1 (en) | Process for extracting latex, resin and rubber from guayule plants | |
| RU2012122214A (en) | METHOD FOR PRODUCING UTERINE MIXTURE OF NATURAL RUBBER AND SILICON OXIDE | |
| JP6383899B1 (en) | Rubber composition | |
| US4526959A (en) | Process for extracting rubber and by-products from guayule and guayule-like shrubs | |
| AU2013277335A1 (en) | Systems and methods for the management of waste associated with processing guayule shrubs to extract rubber | |
| CN103525068A (en) | White carbon black dispersant, preparation method and applications | |
| CN102311751A (en) | Method for producing oil by degrading waste tires | |
| JP6224429B2 (en) | Rubber composition for tire and pneumatic tire | |
| AU2018232379B2 (en) | Process for the simultaneous extraction of lignin and silica from biomass and elastomer reinforced with a mixture of lignin and silica | |
| CN102516488B (en) | Polymer type anti-oxidant, preparation method thereof, and application thereof | |
| CN112175203B (en) | Preparation method of natural gutta-percha emulsion | |
| CN114907627A (en) | Preparation method of rubber nanocomposite, rubber nanocomposite and application | |
| CN113956504B (en) | Preparation method of butyl latex | |
| CN110862466B (en) | Concentration method of low-concentration eucommia ulmoides latex | |
| JP2015168383A (en) | Pneumatic tire for winter and production method thereof | |
| CN113234261B (en) | Mining engineering tire tread rubber containing 4-ethoxyphenol and preparation method thereof | |
| CN109096555A (en) | A kind of tread rubber compound and its tire | |
| CN111187455B (en) | Wear-resistant rubber composition and preparation method thereof | |
| CN115558173B (en) | Application of industrial lignin as cutting-resistant functional auxiliary agent in preparation of cutting-resistant tire material | |
| CN103342831A (en) | Recovery method for waste of dry glue | |
| US11767418B2 (en) | Rubber composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |