CN113121892A - Method for preparing heat-conducting ultrathin condom by heat-conducting carbon molecule composite latex - Google Patents
Method for preparing heat-conducting ultrathin condom by heat-conducting carbon molecule composite latex Download PDFInfo
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- CN113121892A CN113121892A CN202110407228.2A CN202110407228A CN113121892A CN 113121892 A CN113121892 A CN 113121892A CN 202110407228 A CN202110407228 A CN 202110407228A CN 113121892 A CN113121892 A CN 113121892A
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/02—Direct processing of dispersions, e.g. latex, to articles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F6/00—Contraceptive devices; Pessaries; Applicators therefor
- A61F6/02—Contraceptive devices; Pessaries; Applicators therefor for use by males
- A61F6/04—Condoms, sheaths or the like, e.g. combined with devices protecting against contagion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/14—Dipping a core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/22—Making multilayered or multicoloured articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/753—Medical equipment; Accessories therefor
- B29L2031/7538—Condoms
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- 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
- C08J2307/02—Latex
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/06—Sulfur
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
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Abstract
The invention provides a method for preparing a heat-conducting ultrathin condom by heat-conducting carbon molecule composite latex, which comprises the following steps: s1, dipping the mould into the conventional latex slurry, taking out and drying to form a first conventional latex layer on the mould, S2, dipping the mould attached with the first conventional latex layer into the heat-conducting carbon molecule composite latex slurry, taking out and drying to form a heat-conducting carbon molecule composite latex intermediate layer on the mould, S3, dipping the mould attached with the heat-conducting carbon molecule composite latex intermediate layer into the conventional latex slurry, taking out and drying to form a second conventional latex layer on the mould. The three-layer condom prepared by the invention has the advantages of simple process, good heat conductivity, thin product and excellent mechanical property.
Description
Technical Field
The invention relates to the technical field of condoms, in particular to a method for preparing a heat-conducting ultrathin condom by using heat-conducting carbon molecule composite latex.
Background
At present, most of condoms in the market are made of natural rubber latex, however, the condoms made of the common natural rubber latex have the defects of low thermal conductivity, easiness in oxidation, thick product material and the like. With the development of science and technology, condoms made of composite materials formed by carbon molecules appear on the market, and the carbon molecule materials have high heat conduction and high insulation performance; however, these thermally conductive carbon molecular materials have large specific surface areas, are easily agglomerated, are not easily dispersed in latex, and are easily aggregated, so that the mechanical properties of the composite material cannot be exerted.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a method for preparing a heat-conducting ultrathin condom by using heat-conducting carbon molecule composite latex, which comprises the following steps:
s1, dipping the mould into the conventional latex slurry, taking out and drying to form a conventional latex layer I on the mould,
s2, dipping the mould attached with the conventional latex layer I into the heat-conducting carbon molecule composite latex slurry, taking out and drying to form a heat-conducting carbon molecule composite latex intermediate layer on the mould,
s3, dipping the mould attached with the heat-conducting carbon molecule composite latex intermediate layer into conventional latex slurry, taking out and drying to form a conventional latex layer II on the mould;
the thickness of the first conventional latex layer and the second conventional latex layer is 18-22 mu m, and the thickness of the heat-conducting carbon molecule composite latex intermediate layer is 23-27 mu m.
Further, the raw material composition of the heat-conducting carbon molecule composite latex slurry comprises, by weight, 10-20 parts of heat-conducting carbon molecule slurry and 80-90 parts of vulcanized latex.
Furthermore, the raw materials of the heat-conducting carbon molecular slurry comprise, by weight, 8-12 parts of a surface-modified heat-conducting carbon molecular material, 1.2-1.8 parts of a dispersing agent, and 86.2-88.5 parts of soft water.
Further, the surface-modified heat-conducting carbon molecular material is one of surface-modified graphene, white graphite and silicon carbide.
Further, the vulcanized latex comprises the following raw materials in parts by weight: 94.85-95.75 parts of natural latex, 0.25-0.8 part of stabilizer, 0.8-1 part of sulfur, 0.8-1 part of accelerator, 1-1.25 parts of anti-aging agent, 0.4-0.8 part of activator and 0.1-0.3 part of dispersing agent.
Further, the stabilizer is one of potassium hydroxide, sodium hydroxide and casein, the accelerator is one of zinc diethyldithiocarbamate and zinc ethylphenyldithiocarbamate, the anti-aging agent is one of BHT2, 6-di-tert-butyl-p-cresol and styrenated phenol, the activator is one of zinc oxide and zinc carbonate, and the diffusant is one of peregal O and disodium methylene dinaphthalenesulfonate.
The invention mixes the heat-conducting carbon molecular material with dispersant and soft water according to specific proportion and stirs them under normal temperature and pressure to obtain the heat-conducting carbon molecular slurry with even dispersion, the operation is convenient, the reaction condition is mild, and the agglomeration among the heat-conducting carbon molecular monomers can be effectively inhibited; after being mixed with vulcanized latex, the uniformly dispersed heat-conducting carbon molecular slurry is rapidly stirred for 3-5 hours under the conditions of normal temperature and normal pressure, and the heat-conducting carbon molecular material can fully interact with the interface between the natural latex matrixes in the stirring process, so that the mechanical property, the heat conductivity and the like of the heat-conducting carbon molecular composite latex intermediate layer of the latex product are improved. The heat-conducting carbon molecule composite latex intermediate layer is formed during the second dipping, and the first dipping and the third dipping are both conventional latex materials, so that the condom with the three-layer structure is finally prepared.
Drawings
Fig. 1 is a schematic representation of the construction of a condom of three-layer construction made in accordance with the present invention.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.
Example 1:
a method for preparing a heat-conducting ultrathin condom by heat-conducting carbon molecule composite latex comprises the following steps:
s1, dipping the mould into the conventional latex slurry, taking out and drying to form a conventional latex layer I on the mould,
s2, dipping the mould attached with the conventional latex layer I into the heat-conducting carbon molecule composite latex slurry, taking out and drying to form a heat-conducting carbon molecule composite latex intermediate layer on the mould,
s3, dipping the mould attached with the heat-conducting carbon molecule composite latex intermediate layer into conventional latex slurry, taking out and drying to form a conventional latex layer II on the mould;
the thickness of the first conventional latex layer and the second conventional latex layer is 20 micrometers, and the thickness of the intermediate layer of the heat-conducting carbon molecule composite latex is 25 micrometers; the structure of the prepared condom with the three-layer structure is shown in figure 1, the first layer at the outer side is a conventional latex layer I, the second layer at the middle part is a heat-conducting carbon molecule composite latex middle layer, and the third layer at the inner side is a conventional latex layer II.
The preparation method of the heat-conducting carbon molecule composite latex slurry comprises the following steps: firstly, preparing graphene slurry and vulcanized latex for later use; and then, adding 10kg of graphene slurry into 90kg of vulcanized latex, and uniformly stirring to obtain the heat-conducting carbon molecule composite latex slurry.
The preparation method of the graphene slurry comprises the following steps: firstly, 1.2kg of methylene dinaphthalene disodium sulfonate is added into 86.9kg of soft water to prepare a dispersant aqueous solution; then, 8kg of commercially available surface-modified graphene is added into the dispersant aqueous solution and rapidly stirred for 8 hours, so as to obtain graphene slurry.
The preparation method of the vulcanized latex comprises the following steps: firstly, 94.85kg of natural latex is pressed into a stirring tank, 0.25kg of casein and 0.1kg of disodium methylene dinaphthalenesulfonate are sequentially added under the stirring state, then a hot water circulating pump is started to heat the latex, the temperature of the latex is 35 ℃, and the processing time is 4 hours; after the heat treatment is finished, the temperature of the latex is adjusted to 40 ℃, and then 0.8kg of sulfur, 0.8kg of zinc diethyldithiocarbamate, 1kg of BHT2, 6-di-tert-butyl-p-cresol and 0.4kg of zinc oxide are sequentially added for vulcanization, the vulcanization time is 4 hours, and the vulcanization process is continuously stirred, so that the vulcanized latex is obtained.
Example 2:
a method for preparing a heat-conducting ultrathin condom by heat-conducting carbon molecule composite latex comprises the following steps:
s1, dipping the mould into the conventional latex slurry, taking out and drying to form a conventional latex layer I on the mould,
s2, dipping the mould attached with the conventional latex layer I into the heat-conducting carbon molecule composite latex slurry, taking out and drying to form a heat-conducting carbon molecule composite latex intermediate layer on the mould,
s3, dipping the mould attached with the heat-conducting carbon molecule composite latex intermediate layer into conventional latex slurry, taking out and drying to form a conventional latex layer II on the mould;
the thickness of the first conventional latex layer and the second conventional latex layer is 20 micrometers, and the thickness of the intermediate layer of the heat-conducting carbon molecule composite latex is 24 micrometers; the structure of the prepared condom with the three-layer structure is shown in figure 1, the first layer at the outer side is a conventional latex layer I, the second layer at the middle part is a heat-conducting carbon molecule composite latex middle layer, and the third layer at the inner side is a conventional latex layer II.
The preparation method of the heat-conducting carbon molecule composite latex slurry comprises the following steps: firstly, preparing white graphite slurry and vulcanized latex for later use; and then, adding 15kg of white graphite slurry into 85kg of vulcanized latex, and uniformly stirring to obtain the heat-conducting carbon molecule composite latex slurry.
The preparation method of the white graphite slurry comprises the following steps: firstly, 1.5kg of methylene dinaphthalene disodium sulfonate is added into 88.5kg of soft water to prepare a dispersant aqueous solution; then, 10kg of white graphite is added into the dispersant aqueous solution and rapidly stirred for 8 hours, and the white graphite slurry is obtained.
The preparation method of the vulcanized latex comprises the following steps: firstly, pressing 95kg of natural latex into a stirring tank, sequentially adding 0.5kg of potassium hydroxide and 0.2kg of peregal O under the stirring state, then starting a hot water circulating pump to heat the latex, wherein the temperature of the latex is 40 ℃, and the treatment time is 5 hours; after the heat treatment is finished, the temperature of the latex is adjusted to 45 ℃, and then 0.9kg of sulfur, 0.9kg of zinc ethyl phenyl dithiocarbamate, 1.1kg of styrenated phenol and 0.5kg of zinc carbonate are sequentially added for vulcanization, wherein the vulcanization time is 5 hours, and the vulcanization process is continuously stirred, so that the vulcanized latex is obtained.
Example 3:
a method for preparing a heat-conducting ultrathin condom by heat-conducting carbon molecule composite latex comprises the following steps:
s1, dipping the mould into the conventional latex slurry, taking out and drying to form a conventional latex layer I on the mould,
s2, dipping the mould attached with the conventional latex layer I into the heat-conducting carbon molecule composite latex slurry, taking out and drying to form a heat-conducting carbon molecule composite latex intermediate layer on the mould,
s3, dipping the mould attached with the heat-conducting carbon molecule composite latex intermediate layer into conventional latex slurry, taking out and drying to form a conventional latex layer II on the mould;
the thickness of the first conventional latex layer and the second conventional latex layer is 20 micrometers, and the thickness of the intermediate layer of the heat-conducting carbon molecule composite latex is 25 micrometers; the structure of the prepared condom with the three-layer structure is shown in figure 1, the first layer at the outer side is a conventional latex layer I, the second layer at the middle part is a heat-conducting carbon molecule composite latex middle layer, and the third layer at the inner side is a conventional latex layer II.
The preparation method of the heat-conducting carbon molecule composite latex slurry comprises the following steps: firstly, preparing silicon carbide slurry and vulcanized latex for later use; and then, adding 20kg of silicon carbide slurry into 80kg of vulcanized latex, and uniformly stirring to obtain the heat-conducting carbon molecule composite latex slurry.
The preparation method of the silicon carbide slurry comprises the following steps: firstly, 1.8kg of methylene dinaphthalene disodium sulfonate is added into 86.2kg of soft water to prepare a dispersant aqueous solution; then, 12kg of silicon carbide is added into the dispersant aqueous solution and rapidly stirred for 8 hours, thus obtaining silicon carbide slurry.
The preparation method of the vulcanized latex comprises the following steps: firstly, pressing 95.75kg of natural latex into a stirring tank, sequentially adding 0.8kg of sodium hydroxide and 0.3kg of peregal O under the stirring state, then starting a hot water circulating pump to heat the latex, wherein the temperature of the latex is 45 ℃, and the treatment time is 5 hours; after the heat treatment is finished, the temperature of the latex is adjusted to 55 ℃, and then 1kg of sulfur, 1kg of zinc ethyl phenyl dithiocarbamate, 1.25kg of styrenated phenol and 0.8kg of zinc carbonate are sequentially added for vulcanization, wherein the vulcanization time is 5 hours, and the vulcanization process is continuously stirred, so that the vulcanized latex is obtained.
Example 4:
batch condoms of specification W52, prepared according to the methods of examples 1 to 3, were subjected to spot-test using GB7544-2009 "technical requirements and experimental methods for natural latex rubber condoms", the test results are shown in table 1, and the test results in the table are mean values.
TABLE 1
As can be seen from the test results in Table 1, the condoms prepared according to the invention also have excellent mechanical properties while satisfying the basic size.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. A method for preparing a heat-conducting ultrathin condom by heat-conducting carbon molecule composite latex is characterized by comprising the following steps:
s1, dipping the mould into the conventional latex slurry, taking out and drying to form a conventional latex layer I on the mould,
s2, dipping the mould attached with the conventional latex layer I into the heat-conducting carbon molecule composite latex slurry, taking out and drying to form a heat-conducting carbon molecule composite latex intermediate layer on the mould,
s3, dipping the mould attached with the heat-conducting carbon molecule composite latex intermediate layer into conventional latex slurry, taking out and drying to form a conventional latex layer II on the mould;
the thickness of the first conventional latex layer and the second conventional latex layer is 18-22 mu m, and the thickness of the heat-conducting carbon molecule composite latex intermediate layer is 23-27 mu m.
2. The method for preparing the heat-conducting ultrathin condom from the heat-conducting carbon molecule composite latex according to claim 1, wherein the heat-conducting carbon molecule composite latex slurry comprises 10-20 parts by weight of heat-conducting carbon molecule slurry and 80-90 parts by weight of vulcanized latex.
3. The method for preparing the heat-conducting ultrathin condom from the heat-conducting carbon molecule composite latex according to claim 2, wherein the heat-conducting carbon molecule slurry comprises 8-12 parts by weight of surface-modified heat-conducting carbon molecule material, 1.2-1.8 parts by weight of dispersant and 86.2-88.5 parts by weight of soft water.
4. The method for preparing the heat-conducting ultrathin condom from the heat-conducting carbon molecule composite latex according to claim 3, wherein the surface-modified heat-conducting carbon molecule material is one of surface-modified graphene, white graphite and silicon carbide.
5. The method for preparing the heat-conducting ultrathin condom from the heat-conducting carbon molecule composite latex according to claim 2, wherein the vulcanized latex comprises the following raw materials in parts by weight: 94.85-95.75 parts of natural latex, 0.25-0.8 part of stabilizer, 0.8-1 part of sulfur, 0.8-1 part of accelerator, 1-1.25 parts of anti-aging agent, 0.4-0.8 part of activator and 0.1-0.3 part of dispersing agent.
6. The method for preparing the heat-conducting ultrathin condom from the heat-conducting carbon molecule composite latex of claim 5, wherein the stabilizer is one of potassium hydroxide, sodium hydroxide and casein, the accelerator is one of zinc diethyldithiocarbamate and zinc ethylphenyldithiocarbamate, the anti-aging agent is one of BHT2, 6-di-tert-butyl-p-cresol and styrenated phenol, the activator is one of zinc oxide and zinc carbonate, and the diffuser is one of peregal O and disodium methylene dinaphthalene sulfonate.
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| CN202110407228.2A CN113121892A (en) | 2021-04-15 | 2021-04-15 | Method for preparing heat-conducting ultrathin condom by heat-conducting carbon molecule composite latex |
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| CN202110407228.2A CN113121892A (en) | 2021-04-15 | 2021-04-15 | Method for preparing heat-conducting ultrathin condom by heat-conducting carbon molecule composite latex |
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| CN106947097A (en) * | 2017-03-09 | 2017-07-14 | 辽宁兰晶科技有限公司 | Graphene laminating nm-class boron nitride composite emulsion prepares method of the interlayer without quick isolation sheath |
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| CN108219221A (en) * | 2017-12-23 | 2018-06-29 | 广州双乳胶制品有限公司 | A kind of high isolation, the sheath and preparation method thereof of high heat conduction |
| CN109593215A (en) * | 2018-11-28 | 2019-04-09 | 广州双乳胶制品有限公司 | A kind of preparation method of frivolous, high-intensitive sheath |
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| 王文广，等: "《聚合物改性原理》", 31 March 2018, 中国轻工业出版社 * |
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