CN107936420A - A kind of shock proof polytrifluorochloroethylene material and preparation method thereof - Google Patents
A kind of shock proof polytrifluorochloroethylene material and preparation method thereof Download PDFInfo
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- CN107936420A CN107936420A CN201711202141.1A CN201711202141A CN107936420A CN 107936420 A CN107936420 A CN 107936420A CN 201711202141 A CN201711202141 A CN 201711202141A CN 107936420 A CN107936420 A CN 107936420A
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- polytrifluorochloroethylene
- hydroxybenzoic acid
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F259/00—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00
- C08F259/08—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing fluorine
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Abstract
The invention discloses a kind of shock proof polytrifluorochloroethylene material and preparation method thereof, the polytrifluorochloroethylene material, includes according to the raw material of parts by weight：41 49 parts of polytrifluorochloroethylene, 48 parts of sodium diethyldithiocarbamate, 11 19 parts of polyglycol ether, 7 15 parts of P-hydroxybenzoic acid, 18 26 parts of butyl acrylate.Polytrifluorochloroethylene is crushed, is stirred with the sealing of P-hydroxybenzoic acid solution Hybrid Heating；Then polyglycol ether, the heating sealing stirring of sodium diethyldithiocarbamate solution are added, mixed again with butyl acrylate, be warming up to 205 DEG C and seal 55 60min of stir process at such a temperature, then 70 75min are stirred at a temperature of 238 DEG C, extruded by extruder after heating to obtain the final product.The present invention makes the performances such as the strength of materials, wearability be improved, and particularly impact strength significantly improves, and can be widely applied to the fields such as electronic apparatus, medical treatment, chemical industry.
Description
Technical field
The present invention relates to field of material technology, is specifically a kind of shock proof polytrifluorochloroethylene material and its preparation side
Method.
Background technology
Polytrifluorochloroethylene (PCTFE) is the homopolymer of chlorotrifluoroethylene, is crystalline macromolecule.It has in main carbon
There is the structure of fluorine atom and chlorine atom around chain.F atom in molecular structure makes polymer have chemical inertness, and Cl atoms are then
Make polymer that there is the transparency, thermoplasticity and hardness.So polytrifluorochloroethylene be it is a kind of have good chemical inertness, resistance toization
Learn corrosivity and the polymer of excellent dielectric properties and optical property.In all plastics, there is minimum steam to ooze
Saturating rate, impermeable any gas is not combustion-supporting, is a kind of good barrier polymer.PCTFE is mainly used in electronics, electric, resistance to
The field such as cryogenic device, medical, chemical industry.But but there is the deficiencies of being not easy injection molding, impact property is poor in polytrifluorochloroethylene.
The content of the invention
It is an object of the invention to provide a kind of shock proof polytrifluorochloroethylene material and preparation method thereof, with solution
State the problem of being proposed in background technology.
To achieve the above object, the present invention provides following technical solution：
A kind of shock proof polytrifluorochloroethylene material, includes according to the raw material of parts by weight：Polytrifluorochloroethylene 41-49
Part, 4-8 parts of sodium diethyldithiocarbamate, 11-19 parts of polyglycol ether, 7-15 parts of P-hydroxybenzoic acid, acrylic acid fourth
18-26 parts of ester.
As the further scheme of the present invention：The shock proof polytrifluorochloroethylene material, according to the raw material of parts by weight
Including：43-47 parts of polytrifluorochloroethylene, 5-7 parts of sodium diethyldithiocarbamate, 13-17 parts of polyglycol ether, to hydroxyl
9-13 parts of benzoic acid, 20-24 parts of butyl acrylate.
As the further scheme of the present invention：The shock proof polytrifluorochloroethylene material, according to the raw material of parts by weight
Including：45 parts of polytrifluorochloroethylene, 6 parts of sodium diethyldithiocarbamate, 15 parts of polyglycol ether, P-hydroxybenzoic acid 11
Part, 22 parts of butyl acrylate.
A kind of preparation method of shock proof polytrifluorochloroethylene material, comprises the following steps：
1) deionized water of 5-6 times of sodium diethyldithiocarbamate and its quality is mixed, two sulphur of diethyl is made
For carbamic acid sodium solution；10-11 times of 50% ethanol of P-hydroxybenzoic acid and its quality is mixed, P-hydroxybenzoic acid is made
Solution；
2) polytrifluorochloroethylene crushed, cross 100-150 mesh sieves, then mixed, be heated to P-hydroxybenzoic acid solution
105-110 DEG C and stir process 2.2h is sealed at such a temperature；Then polyglycol ether, diethyldithiocar bamic acid are added
Sodium solution, is warming up to 152 DEG C, and seals stir process 45-50min at such a temperature, and mixture A is made；
3) mixture A is mixed with butyl acrylate, is warming up to 205 DEG C and seals stir process 55- at such a temperature
60min, then 70-75min is stirred at a temperature of 238 DEG C, extruded by extruder after heating to obtain the final product.
As the further scheme of the present invention：In step 2), mixing speed 150-180r/min.
As the further scheme of the present invention：In step 3), mixing speed 250r/min.
Another object of the present invention is to provide above-mentioned polytrifluorochloroethylene material in the field such as electric, medical, chemical industry
Application.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention is using polytrifluorochloroethylene, sodium diethyldithiocarbamate, polyglycol ether, para hydroxybenzene first
Acid, butyl acrylate and by polytrifluorochloroethylene material made from above-mentioned technique, are acted synergistically, make material be easy to plus
Work is molded, and the performance such as intensity, wearability is improved, and particularly impact strength significantly improves, and can be widely applied to electronics
The fields such as electric appliance, medical treatment, chemical industry.Raw material of the present invention is simple, and preparation method technique is simple and convenient to operate, production cost is low, is suitable for
Industrialized production.
Embodiment
Below in conjunction with the embodiment of the present invention, the technical solution in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art's all other embodiments obtained without making creative work, all
Belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of shock proof polytrifluorochloroethylene material, including following raw material：Polytrifluorochloroethylene
41kg, sodium diethyldithiocarbamate 4kg, polyglycol ether 11kg, P-hydroxybenzoic acid 7kg, butyl acrylate 18kg.
5 times of deionized water of sodium diethyldithiocarbamate and its quality is mixed, diethyl-dithio ammonia is made
Base sodium formate solution；10 times of 50% ethanol of P-hydroxybenzoic acid and its quality is mixed, P-hydroxybenzoic acid solution is made.Will
Polytrifluorochloroethylene crushes, crosses 100 mesh sieves, is then mixed with P-hydroxybenzoic acid solution, is heated to 105 DEG C and at such a temperature
Seal stir process 2.2h；Then polyglycol ether, sodium diethyldithiocarbamate solution are added, is warming up to 152 DEG C, and
Stir process 45min is sealed at such a temperature, and mixture A is made；Mixing speed is 150r/min.By mixture A and acrylic acid
Butyl ester mixes, and is warming up to 205 DEG C and seals stir process 55min at such a temperature, then stirs 70min at a temperature of 238 DEG C,
Mixing speed is 250r/min, is extruded by extruder after heating to obtain the final product.
Embodiment 2
In the embodiment of the present invention, a kind of shock proof polytrifluorochloroethylene material, including following raw material：Polytrifluorochloroethylene
49kg, sodium diethyldithiocarbamate 8kg, polyglycol ether 19kg, P-hydroxybenzoic acid 15kg, butyl acrylate
26kg。
6 times of deionized water of sodium diethyldithiocarbamate and its quality is mixed, diethyl-dithio ammonia is made
Base sodium formate solution；11 times of 50% ethanol of P-hydroxybenzoic acid and its quality is mixed, P-hydroxybenzoic acid solution is made.Will
Polytrifluorochloroethylene crushes, crosses 150 mesh sieves, is then mixed with P-hydroxybenzoic acid solution, is heated to 110 DEG C and at such a temperature
Seal stir process 2.2h；Then polyglycol ether, sodium diethyldithiocarbamate solution are added, is warming up to 152 DEG C, and
Stir process 50min is sealed at such a temperature, and mixture A is made；Mixing speed is 180r/min.By mixture A and acrylic acid
Butyl ester mixes, and is warming up to 205 DEG C and seals stir process 60min at such a temperature, then stirs 75min at a temperature of 238 DEG C,
Mixing speed is 250r/min, is extruded by extruder after heating to obtain the final product.
Embodiment 3
In the embodiment of the present invention, a kind of shock proof polytrifluorochloroethylene material, including following raw material：Polytrifluorochloroethylene
43kg, sodium diethyldithiocarbamate 5kg, polyglycol ether 13kg, P-hydroxybenzoic acid 9kg, butyl acrylate 20kg.
6 times of deionized water of sodium diethyldithiocarbamate and its quality is mixed, diethyl-dithio ammonia is made
Base sodium formate solution；11 times of 50% ethanol of P-hydroxybenzoic acid and its quality is mixed, P-hydroxybenzoic acid solution is made.Will
Polytrifluorochloroethylene crushes, crosses 150 mesh sieves, is then mixed with P-hydroxybenzoic acid solution, is heated to 108 DEG C and at such a temperature
Seal stir process 2.2h；Then polyglycol ether, sodium diethyldithiocarbamate solution are added, is warming up to 152 DEG C, and
Stir process 50min is sealed at such a temperature, and mixture A is made；Mixing speed is 180r/min.By mixture A and acrylic acid
Butyl ester mixes, and is warming up to 205 DEG C and seals stir process 60min at such a temperature, then stirs 75min at a temperature of 238 DEG C,
Mixing speed is 250r/min, is extruded by extruder after heating to obtain the final product.
Embodiment 4
In the embodiment of the present invention, a kind of shock proof polytrifluorochloroethylene material, including following raw material：Polytrifluorochloroethylene
47kg, sodium diethyldithiocarbamate 7kg, polyglycol ether 17kg, P-hydroxybenzoic acid 13kg, butyl acrylate
24kg。
6 times of deionized water of sodium diethyldithiocarbamate and its quality is mixed, diethyl-dithio ammonia is made
Base sodium formate solution；11 times of 50% ethanol of P-hydroxybenzoic acid and its quality is mixed, P-hydroxybenzoic acid solution is made.Will
Polytrifluorochloroethylene crushes, crosses 150 mesh sieves, is then mixed with P-hydroxybenzoic acid solution, is heated to 108 DEG C and at such a temperature
Seal stir process 2.2h；Then polyglycol ether, sodium diethyldithiocarbamate solution are added, is warming up to 152 DEG C, and
Stir process 50min is sealed at such a temperature, and mixture A is made；Mixing speed is 180r/min.By mixture A and acrylic acid
Butyl ester mixes, and is warming up to 205 DEG C and seals stir process 60min at such a temperature, then stirs 75min at a temperature of 238 DEG C,
Mixing speed is 250r/min, is extruded by extruder after heating to obtain the final product.
Embodiment 5
In the embodiment of the present invention, a kind of shock proof polytrifluorochloroethylene material, including following raw material：Polytrifluorochloroethylene
45kg, sodium diethyldithiocarbamate 6kg, polyglycol ether 15kg, P-hydroxybenzoic acid 11kg, butyl acrylate
22kg。
6 times of deionized water of sodium diethyldithiocarbamate and its quality is mixed, diethyl-dithio ammonia is made
Base sodium formate solution；11 times of 50% ethanol of P-hydroxybenzoic acid and its quality is mixed, P-hydroxybenzoic acid solution is made.Will
Polytrifluorochloroethylene crushes, crosses 150 mesh sieves, is then mixed with P-hydroxybenzoic acid solution, is heated to 108 DEG C and at such a temperature
Seal stir process 2.2h；Then polyglycol ether, sodium diethyldithiocarbamate solution are added, is warming up to 152 DEG C, and
Stir process 50min is sealed at such a temperature, and mixture A is made；Mixing speed is 180r/min.By mixture A and acrylic acid
Butyl ester mixes, and is warming up to 205 DEG C and seals stir process 60min at such a temperature, then stirs 75min at a temperature of 238 DEG C,
Mixing speed is 250r/min, is extruded by extruder after heating to obtain the final product.
Comparative example 1
In addition to P-hydroxybenzoic acid is not contained, its raw material and preparation process are consistent with embodiment 5.
Comparative example 2
Only polytrifluorochloroethylene, its preparation process are consistent with embodiment 5.
Comparative example 3
Only polytrifluorochloroethylene, P-hydroxybenzoic acid, its preparation process are consistent with embodiment 5.
Comparative example 4
Each raw material is directly mixed, the other materials that embodiment 5 is added is added, is warming up to 205 DEG C and close at such a temperature
Stir process 60min is sealed, then 75min is stirred at a temperature of 238 DEG C, mixing speed 250r/min, passes through extrusion after heating
Machine is extruded to obtain the final product.The additive amount of each raw material is consistent with embodiment 5.
Embodiment 6
It is as shown in table 1 to the results of property measured by embodiment 1-5 and comparative example 1-4, according to《GB/T 1040-92》、
《GB/T 9841-88》、《GB/T 1843-1996》Etc. national standard.
Table 1
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical solution, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (6)
1. a kind of shock proof polytrifluorochloroethylene material, it is characterised in that include according to the raw material of parts by weight：Poly- trifluoro chloroethene
41-49 parts of alkene, 4-8 parts of sodium diethyldithiocarbamate, 11-19 parts of polyglycol ether, 7-15 parts of P-hydroxybenzoic acid, third
18-26 parts of olefin(e) acid butyl ester.
2. shock proof polytrifluorochloroethylene material according to claim 1, it is characterised in that according to the raw material of parts by weight
Including：43-47 parts of polytrifluorochloroethylene, 5-7 parts of sodium diethyldithiocarbamate, 13-17 parts of polyglycol ether, to hydroxyl
9-13 parts of benzoic acid, 20-24 parts of butyl acrylate.
3. shock proof polytrifluorochloroethylene material according to claim 1, it is characterised in that according to the raw material of parts by weight
Including：45 parts of polytrifluorochloroethylene, 6 parts of sodium diethyldithiocarbamate, 15 parts of polyglycol ether, P-hydroxybenzoic acid 11
Part, 22 parts of butyl acrylate.
4. a kind of preparation method of shock proof polytrifluorochloroethylene material as described in claim 1-3 is any, its feature exist
In comprising the following steps：
1）5-6 times of deionized water of sodium diethyldithiocarbamate and its quality is mixed, diethyl-dithio ammonia is made
Base sodium formate solution；10-11 times of 50% ethanol of P-hydroxybenzoic acid and its quality is mixed, P-hydroxybenzoic acid solution is made；
2）Polytrifluorochloroethylene is crushed, crosses 100-150 mesh sieves, is then mixed with P-hydroxybenzoic acid solution, is heated to 105-
110 DEG C and stir process 2.2h is sealed at such a temperature；Then it is molten that polyglycol ether, sodium diethyldithiocarbamate are added
Liquid, is warming up to 152 DEG C, and seals stir process 45-50min at such a temperature, and mixture A is made；
3）Mixture A is mixed with butyl acrylate, 205 DEG C is warming up to and seals stir process 55-60min at such a temperature,
70-75min is stirred at a temperature of 238 DEG C again, is extruded by extruder after heating to obtain the final product.
5. the preparation method of shock proof polytrifluorochloroethylene material according to claim 5, it is characterised in that step 2）
In, mixing speed 150-180r/min.
6. the preparation method of shock proof polytrifluorochloroethylene material according to claim 5, it is characterised in that step 3）
In, mixing speed 250r/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711202141.1A CN107936420A (en) | 2017-11-27 | 2017-11-27 | A kind of shock proof polytrifluorochloroethylene material and preparation method thereof |
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| CN201711202141.1A CN107936420A (en) | 2017-11-27 | 2017-11-27 | A kind of shock proof polytrifluorochloroethylene material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110452336A (en) * | 2019-08-15 | 2019-11-15 | 宁德卓高新材料科技有限公司 | The method for preparing modified partial fluorine ethylene polymer powder |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020018512A1 (en) * | 1998-07-01 | 2002-02-14 | 3M Innovative Properties Company | Thin barrier film for containment of halogenated aromatic compounds in a chemical thermometer |
| CN101891928A (en) * | 2010-08-09 | 2010-11-24 | 深圳市明鑫高分子技术有限公司 | PCTFE modified filling composite material and production method thereof |
| CN103450605A (en) * | 2013-08-02 | 2013-12-18 | 大连工业大学 | Preparation method of modified polytrifluorochloroethylene material |
| CN104987630A (en) * | 2015-06-02 | 2015-10-21 | 孙文超 | Modified polytrifluorochloroethylene and molding process thereof |
-
2017
- 2017-11-27 CN CN201711202141.1A patent/CN107936420A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020018512A1 (en) * | 1998-07-01 | 2002-02-14 | 3M Innovative Properties Company | Thin barrier film for containment of halogenated aromatic compounds in a chemical thermometer |
| CN101891928A (en) * | 2010-08-09 | 2010-11-24 | 深圳市明鑫高分子技术有限公司 | PCTFE modified filling composite material and production method thereof |
| CN103450605A (en) * | 2013-08-02 | 2013-12-18 | 大连工业大学 | Preparation method of modified polytrifluorochloroethylene material |
| CN104987630A (en) * | 2015-06-02 | 2015-10-21 | 孙文超 | Modified polytrifluorochloroethylene and molding process thereof |
Non-Patent Citations (1)
| Title |
|---|
| 《工程材料实用手册》编辑委员会: "《工程材料实用手册 第7卷 塑料 透明材料 绝缘材料》", 30 June 2002, 中国标准出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110452336A (en) * | 2019-08-15 | 2019-11-15 | 宁德卓高新材料科技有限公司 | The method for preparing modified partial fluorine ethylene polymer powder |
| CN110452336B (en) * | 2019-08-15 | 2021-10-01 | 宁德卓高新材料科技有限公司 | Method for preparing modified vinylidene fluoride polymer powder |
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Application publication date: 20180420 |