CN110591465B - Thermoplastic material surface treating agent and preparation method thereof - Google Patents
Thermoplastic material surface treating agent and preparation method thereof Download PDFInfo
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- CN110591465B CN110591465B CN201910725854.9A CN201910725854A CN110591465B CN 110591465 B CN110591465 B CN 110591465B CN 201910725854 A CN201910725854 A CN 201910725854A CN 110591465 B CN110591465 B CN 110591465B
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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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/26—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment
- C09D123/28—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/26—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment
- C09D123/28—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
- C09D123/286—Chlorinated polyethylene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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Abstract
The invention discloses a thermoplastic material surface treating agent and a preparation method thereof. The invention comprises ethyl acetate, organic copper compound, coupling agent, chlorinated polymer and fluorine-containing polymer. At normal temperature, adding an organic copper compound and a chlorinated polymer into ethyl acetate, dissolving, sequentially adding a fluorine-containing polymer and a coupling agent, uniformly stirring, and filtering to remove impurities to obtain the polyethylene and polypropylene surface treating agent. The polyethylene and polypropylene surface treating agent not only contains an organic copper component which can promote the decomposition of an anaerobic adhesive initiator and improve the curing speed, but also contains a halogen-containing polymer and a coupling agent, so that the bonding strength of the anaerobic adhesive is obviously improved.
Description
Technical Field
The invention belongs to the technical field of surface treatment, relates to surface treatment of anaerobic adhesive bonding materials, and particularly relates to a thermoplastic material polyethylene and polypropylene surface treating agent and a preparation method thereof.
Background
Polyethylene and polypropylene thermoplastic materials have many advantages of low price, excellent mechanical properties, chemical corrosion resistance and the like, and are widely applied to the industries of machinery, electronics, buildings, computers and the like. On the other hand, the anaerobic adhesive is a single-component adhesive prepared according to the principle that oxygen molecules block free radicals, under the condition of oxygen deficiency, an initiator of the anaerobic adhesive is decomposed to generate free radicals and reacts with monomers to generate monomer free radicals, and the monomer free radicals react with other monomer molecules rapidly to generate chain free radicals with the molecular mass from small to large until the free radical polymerization reaction is terminated and the curing of the anaerobic adhesive is completed. Anaerobic adhesives have found wide industrial application due to their single component nature and strong resistance to water, organic solvents, and dilute alkalis and acids. However, polyethylene and polypropylene plastics have low molecular polarity, high crystallinity and high surface inertness and must be surface treated when bonded using anaerobic adhesives.
The influence of surface treatment on the polyethylene bonding performance is researched by Zhaohui of China Tangshan locomotive vehicle company Limited and Wangjing of the university of northeast China, Ximezhu, Gunn Tree river and the like (engineering plastics application, first phase of volume 47 in 2019, pages 60-66), flame or air plasma treatment is adopted, polar group hydroxyl and carboxyl are introduced to the polyethylene surface through oxidation, a weak boundary layer is removed through etching, the surface roughness is improved, and the bonding strength of the polyethylene material is improved. However, this treatment method requires the use of expensive plasma equipment and does not promote the curing of the anaerobic adhesive. Chinese patent 201010523054.8 discloses that the chlorinated polypropylene resin mainly comprises 1-25 parts by weight of chlorinated polypropylene, 1-25 parts by weight of thermoplastic acrylic resin, 1-25 parts by weight of ternary copolymer vinyl chloride-vinyl acetate resin, organic solvents such as toluene and ethyl acetate. The treating agent can form a definite adhesion layer on the surface of polypropylene which is not subjected to any treatment, and flame, corona and aqua regia treatment are not needed when the treating agent is applied to pretreatment of coating of polypropylene products. However, the treatment agent cannot promote the curing of the anaerobic adhesive, and the curing is slow when the anaerobic adhesive is used for bonding, so that the treatment agent is not suitable for the modern industrial requirement of quick assembly.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a thermoplastic material polyethylene and polypropylene surface treatment agent, which is used for carrying out surface treatment on polyethylene and polypropylene and can obviously improve the bonding strength of anaerobic adhesive.
The thermoplastic material polyethylene and polypropylene surface treating agent comprises the following raw materials in parts by weight:
the organic copper compound is one or more of copper acetate, copper tartrate or copper acetylacetonate;
the coupling agent is gamma-methacryloxypropyltrimethoxysilane or diisopropoxydidiacetylacetone titanate;
when used for polyethylene plastics, the chlorinated polymer is chlorinated polyethylene, and the chlorine content is more than 65%; when used in polypropylene plastics, the chlorinated polymer is chlorinated polypropylene with a chlorine content of > 45%;
the synthesis of the fluorine-containing polymer comprises the following steps:
100 g of ethyl acetate is added into a four-neck flask provided with a stirrer, a thermometer, a dropping funnel and a condensing tube, and then a uniform mixed solution of 2-5 g of fluorine-containing acrylate, 1-3 g of 2-hydroxyethyl acrylate, 8-12 g of butyl acrylate, 0.2-0.4 g of azodiisobutyronitrile and 0.3-0.8 g of n-dodecyl mercaptan is slowly dropped. And (3) keeping the temperature at 70-80 ℃ in the dripping process, slowly raising the temperature to 90-100 ℃ after the dripping is finished, and continuously reacting for 4-6 hours to obtain the transparent fluorine-containing polymer.
The fluorine-containing acrylate is one of trifluoroethyl methacrylate, hexafluorobutyl acrylate or tridecyl octyl acrylate;
the invention also provides a preparation method of the thermoplastic resin surface treating agent, which comprises the following steps:
at normal temperature, adding an organic copper compound and a chlorinated polymer into ethyl acetate, dissolving, sequentially adding a fluorine-containing polymer and a coupling agent, uniformly stirring, and filtering to remove impurities to obtain the polyethylene and polypropylene surface treating agent.
The polyethylene and polypropylene surface treating agent not only contains an organic copper component which can promote the decomposition of an anaerobic adhesive initiator and improve the curing speed, but also contains a halogen-containing polymer and a coupling agent, so that the bonding strength of the anaerobic adhesive is obviously improved.
Detailed Description
Specific examples are given below for the purpose of facilitating understanding of the present invention, but the present invention is not limited to these examples.
Example 1:
1) the synthesis of the fluorine-containing polymer comprises the following steps:
100 g of ethyl acetate is added into a four-neck flask provided with a stirrer, a thermometer, a dropping funnel and a condensing tube, and then a uniform mixed solution of 5g of trifluoroethyl methacrylate, 2g of 2-hydroxyethyl acrylate, 10 g of butyl acrylate, 0.4g of azobisisobutyronitrile and 0.5g of n-dodecyl mercaptan is slowly dropped. And keeping the temperature at 70 ℃ in the dropping process, slowly raising the temperature to 95 ℃ after the dropping is finished, and continuously reacting for 4 hours to obtain the transparent fluorine-containing polymer.
2) At normal temperature, adding 1g of copper acetate and 3g of chlorinated polypropylene into 93g of ethyl acetate, wherein the chlorine content is more than 45%, dissolving, sequentially adding 1g of diisopropoxy diacetone titanate and 2g of the obtained fluorine-containing polymer, uniformly stirring, and filtering to remove impurities to obtain the polypropylene surface treating agent.
Example 2:
1) the synthesis of the fluorine-containing polymer comprises the following steps:
100 g of ethyl acetate is added into a four-neck flask provided with a stirrer, a thermometer, a dropping funnel and a condensing tube, and then a uniform mixed solution of 3g of hexafluorobutyl acrylate, 3g of 2-hydroxyethyl acrylate, 12 g of butyl acrylate, 0.2 g of azobisisobutyronitrile and 0.4g of n-dodecyl mercaptan is slowly dropped. And keeping the temperature at 80 ℃ in the dropping process, slowly raising the temperature to 90 ℃ after the dropping is finished, and continuously reacting for 5 hours to obtain the transparent fluorine-containing polymer.
2) At normal temperature, adding 0.8g of acetylacetone and 3g of chlorinated polypropylene into 90.4g of ethyl acetate, wherein the chlorine content is more than 45%, dissolving, sequentially adding 0.8g of diisopropoxydidiacetylacetone titanate and 5g of the obtained fluorine-containing polymer, uniformly stirring, and filtering to remove impurities to obtain the polypropylene surface treating agent.
Example 3:
1) the synthesis of the fluorine-containing polymer comprises the following steps:
100 g of ethyl acetate is added into a four-neck flask provided with a stirrer, a thermometer, a dropping funnel and a condensing tube, and then a uniform mixed solution of 2g of tridecafluorooctyl acrylate, 1g of 2-hydroxyethyl acrylate, 8g of butyl acrylate, 0.2 g of azobisisobutyronitrile and 0.3 g of n-dodecyl mercaptan is slowly dropped. And keeping the temperature at 80 ℃ in the dropping process, slowly raising the temperature to 95 ℃ after the dropping is finished, and continuously reacting for 6 hours to obtain the transparent fluorine-containing polymer.
2) At normal temperature, adding 1g of copper tartrate and 6g of chlorinated polyethylene into 86g of ethyl acetate, wherein the chlorine content is more than 65%, dissolving, sequentially adding 1g of gamma-methacryloxypropyltrimethoxysilane and 6g of the obtained fluorine-containing polymer, uniformly stirring, and filtering to remove impurities to obtain the polyethylene surface treating agent.
Example 4:
1) the synthesis of the fluorine-containing polymer comprises the following steps:
100 g of ethyl acetate is added into a four-neck flask provided with a stirrer, a thermometer, a dropping funnel and a condensing tube, and then a uniform mixed solution of 5g of tridecafluorooctyl acrylate, 2g of 2-hydroxyethyl acrylate, 10 g of butyl acrylate, 0.3 g of azobisisobutyronitrile and 0.8g of n-dodecyl mercaptan is slowly dropped. And keeping the temperature at 70 ℃ in the dropping process, slowly raising the temperature to 100 ℃ after the dropping is finished, and continuously reacting for 4 hours to obtain the transparent fluorine-containing polymer.
2) At normal temperature, adding 0.5g of acetic ketone and 3g of chlorinated polyethylene into 94g of ethyl acetate, wherein the chlorine content is more than 65%, dissolving, sequentially adding 0.5g of gamma-methacryloxypropyltrimethoxysilane and 2g of the obtained fluorine-containing polymer, uniformly stirring, and filtering to remove impurities to obtain the polyethylene surface treating agent.
Experimental items and methods:
according to the national standard GB/T7124-2008, the experimental material is made into the specification of 25mm multiplied by 100mm, and the adhesive surface is made into the specification of 12.5mm multiplied by 25 mm. The surface of the test piece is cleaned by absolute ethyl alcohol, then absorbent cotton is dipped in the surface treating agent prepared in the embodiment, the surface treating agent is lightly coated on the surface of the test material by micro force, anaerobic adhesive (the adhesive area is 12.5mm multiplied by 25mm) is uniformly coated after the surface is dried, the thickness is controlled to be about 0.2mm, the prepared adhesive joint piece is cured at the temperature of (25 +/-2) DEG C, and the pressure shear strength of the test piece is measured after the test piece is fully cured (2 hours). The specific parameters are shown in Table 1.
TABLE 1 compression shear strength of the products of the examples
| Experimental Material | Comparative example 1 | Example 1 | Example 2 | Comparative example 2 | Example 3 | Example 4 |
| Polyethylene or polypropylene | 0.43Mpa | 9.25Mpa | 9.85Mpa | 0.45Mpa | 9.55Mpa | 10.25Mpa |
Remarking: comparative example a mixture of 99.5 grams of ethanol and 0.5 grams of copper acetate at ambient temperature was used, with comparative example 1, example 1 and example 2 being coated on a polypropylene material and comparative example 2, example 3 and example 4 being coated on a polyethylene material. The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above embodiments, and all embodiments are within the scope of the present invention as long as the requirements of the present invention are met.
Claims (5)
1. The thermoplastic material surface treating agent is characterized by comprising the following components in parts by weight:
the coupling agent is gamma-methacryloxypropyltrimethoxysilane or diisopropoxydidiacetylacetone titanate;
the synthesis of the fluorine-containing polymer comprises the following steps:
adding 100 g of ethyl acetate into a four-neck flask provided with a stirrer, a thermometer, a dropping funnel and a condensing tube, and slowly dropwise adding a uniform mixed solution of 2-5 g of fluorine-containing acrylate, 1-3 g of 2-hydroxyethyl acrylate, 8-12 g of butyl acrylate, 0.2-0.4 g of azodiisobutyronitrile and 0.3-0.8 g of n-dodecyl mercaptan; and (3) keeping the temperature at 70-80 ℃ in the dripping process, slowly raising the temperature to 90-100 ℃ after the dripping is finished, and continuously reacting for 4-6 hours to obtain the transparent fluorine-containing polymer.
2. The surface treatment agent for thermoplastic materials according to claim 1, wherein the organic copper compound is one or more of copper acetate, copper tartrate or copper acetylacetonate.
3. A thermoplastic material surface treatment according to claim 1 or 2, characterized in that the fluoroacrylate is one of trifluoroethyl methacrylate, hexafluorobutyl acrylate or tridecyl octyl acrylate.
4. A thermoplastic material surface treatment agent according to claim 1 or 2, characterized in that when used in polyethylene plastic, the chlorinated polymer is chlorinated polyethylene, with a chlorine content > 65%; when used in polypropylene plastics, the chlorinated polymer is chlorinated polypropylene with a chlorine content > 45%.
5. The method for preparing the thermoplastic material surface treating agent as claimed in claim 1, 2, 3 or 4, characterized in that the method comprises:
at normal temperature, adding an organic copper compound and a chlorinated polymer into ethyl acetate, dissolving, sequentially adding a fluorine-containing polymer and a coupling agent, uniformly stirring, and filtering to remove impurities.
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| CN201910725854.9A CN110591465B (en) | 2019-08-07 | 2019-08-07 | Thermoplastic material surface treating agent and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103113789A (en) * | 2011-11-17 | 2013-05-22 | 上海杰事杰新材料(集团)股份有限公司 | Primer for hard-bonding materials and preparation method thereof |
| CN103319959A (en) * | 2013-06-09 | 2013-09-25 | 广州市承信公路工程检验有限公司 | Bridge cable polyethylene protective primer and preparation method thereof |
| CN104449457A (en) * | 2014-11-11 | 2015-03-25 | 哈尔滨工业大学无锡新材料研究院 | Primer promoting agent for bonding of inert material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4652231B2 (en) * | 2003-06-13 | 2011-03-16 | モメンティブ・パフォーマンス・マテリアルズ・ジャパン合同会社 | Coating agent composition |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103113789A (en) * | 2011-11-17 | 2013-05-22 | 上海杰事杰新材料(集团)股份有限公司 | Primer for hard-bonding materials and preparation method thereof |
| CN103319959A (en) * | 2013-06-09 | 2013-09-25 | 广州市承信公路工程检验有限公司 | Bridge cable polyethylene protective primer and preparation method thereof |
| CN104449457A (en) * | 2014-11-11 | 2015-03-25 | 哈尔滨工业大学无锡新材料研究院 | Primer promoting agent for bonding of inert material and preparation method thereof |
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Effective date of registration: 20230718 Address after: Floor 1, No. 168, Chaoliang North Road, Taihe Town, Baiyun District, Guangzhou City, Guangdong Province, 510540 Patentee after: Guangzhou Yaowei Plastic Co.,Ltd. Address before: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee before: Dragon totem Technology (Hefei) Co.,Ltd. Effective date of registration: 20230718 Address after: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Dragon totem Technology (Hefei) Co.,Ltd. Address before: 310018 No. 2 street, Xiasha Higher Education Zone, Hangzhou, Zhejiang Patentee before: HANGZHOU DIANZI University |