CN109852311B - Adhesive composition for polyolefin composite insulator - Google Patents
Adhesive composition for polyolefin composite insulator Download PDFInfo
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- CN109852311B CN109852311B CN201811652644.3A CN201811652644A CN109852311B CN 109852311 B CN109852311 B CN 109852311B CN 201811652644 A CN201811652644 A CN 201811652644A CN 109852311 B CN109852311 B CN 109852311B
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Abstract
The adhesive composition for polyolefin composite insulator consists of chlorinated polypropylene modified epoxy adhesive (primer) and modified chlorinated polypropylene adhesive (surface adhesive). After the adhesive composition is matched for use, the high-temperature injection molding process condition of the polyolefin umbrella cover or the sheath at the temperature of 180-230 ℃ can be met, and the bonding shear strength between the molded polyolefin umbrella cover or the sheath and the epoxy core rod reaches 3.5-6.5 MPa. Wherein the primer consists of epoxy resin, chlorinated polypropylene with the chlorine content of 15-30%, 3-dimethyl-4, 4-diaminodicyclohexyl methane, an amino coupling agent and an organic solvent; the surface glue consists of chlorinated polypropylene with chlorine content of 15-30%, chlorinated polypropylene with chlorine content of 50-65%, epoxy resin, 3-dimethyl-4, 4-diaminodicyclohexyl methane, amino coupling agent and organic solvent.
Description
Technical Field
The invention belongs to the field of composite insulator manufacturing, and relates to an adhesive composition for a polyolefin composite insulator.
Background
The polyolefin composite insulator is composed of an epoxy core rod, a polyolefin umbrella sleeve or sheath and an end assembly part, has the advantages of excellent electrical property, toughness, hydrophobicity, mechanical strength, light weight, convenience in transportation and installation and the like, and is a novel composite insulator developed in recent years. The bonding force between the umbrella sleeve or the sheath of the polyolefin composite insulator and the epoxy core rod must be firm, otherwise, in the long-term operation process, the defects of debonding, micropores and the like can be formed in the interface area of the umbrella sleeve or the sheath and the core rod, interface breakdown, partial discharge or moisture permeation into the core rod are caused, and abnormal fracture accidents are caused. The chlorinated polypropylene resin has better adhesion to polyolefin materials, and researchers further carry out graft modification research on the chlorinated polypropylene resin to improve the adhesion capability to polyolefin materials and polar substrates, for example, patent CN104610890B discloses a preparation method of a modified chlorinated polypropylene adhesive, which utilizes epoxy acrylic resin, acrylate reactive diluent and polypropylene glycol diglycidyl ester to modify chlorinated polypropylene to improve the adhesion performance to polypropylene and polar substrates. Wherein, the epoxy acrylic resin contains polar groups such as hydroxyl, ether bond and the like, which can improve the bonding property with polar base materials, and the toughening agent polypropylene glycol diglycidyl ester improves the impact resistance and cracking resistance of the coating. Patent CN106459703B discloses a composition of modified polyolefin and epoxy resin, which comprises crystalline acid-modified polyolefin or acid-modified chlorinated polyolefin, glycidyl ether type epoxy resin, glycidyl amine type epoxy resin, etc., and has good adhesion between polyolefin resin base material and metal base material by utilizing the effects of crosslinking reaction of epoxy resin and acid-modified polyolefin, etc.
However, the modified chlorinated polyolefin adhesive grafted or reacted with the above epoxy resin cannot be effectively used for bonding the umbrella cover or the sheath of the polyolefin composite insulator and the epoxy core rod. The reason is that: in the modified chlorinated polyolefin adhesive, the content of the epoxy resin accounts for 30 percent or less of the weight of the whole adhesive resin, and the vital adhesion with an epoxy core rod material is insufficient, so that good adhesion between a polyolefin umbrella cover or a sheath and the epoxy core rod cannot be realized; if the amount of epoxy resin in the modified chlorinated polyolefin adhesive is increased, the crystallinity, high temperature resistance and adhesion to polyolefin materials are reduced. Particularly, the modified chlorinated polypropylene adhesive has low crosslinking degree and poor heat resistance, and can be bonded to fail when coated on an epoxy core rod and subjected to injection molding at a high temperature of 180-230 ℃ of a polyolefin umbrella cover or a sheath. At present, polyolefin composite insulator manufacturers mainly combine a polyolefin umbrella sleeve or a sheath with an epoxy core rod through physical acting force generated by cooling and shrinking after polyolefin material is subjected to hot injection molding (180-230 ℃), but the physical acting force of an interface between a non-polar polyolefin material and a polar epoxy base material is limited, so that the service life of the polyolefin composite insulator is restricted. If the adhesive which has excellent adhesiveness to the polyolefin umbrella cover and the epoxy core rod and meets the manufacturing process of the polyolefin composite insulator can be developed, the application reliability of the polyolefin composite insulator can be greatly improved, and the service life of the polyolefin composite insulator can be prolonged.
Disclosure of Invention
The invention aims to provide an adhesive composition for a polyolefin composite insulator, so that a polyolefin umbrella cover or a sheath is well bonded with an epoxy core rod, and the performance of the adhesive composition meets the 180-230 ℃ high-temperature injection molding process condition of the polyolefin umbrella cover or the sheath.
The invention is realized by the following technical scheme: the adhesive composition comprises a chlorinated polypropylene modified epoxy adhesive (primer) and a modified chlorinated polypropylene adhesive (surface adhesive), and the aim of the invention is achieved by matching the adhesive composition.
The chlorinated polypropylene modified epoxy adhesive (primer) consists of: the epoxy resin-modified polypropylene resin composition comprises, by weight, 100 parts of epoxy resin, 5-20 parts of chlorinated polypropylene with a chlorine content of 15-30%, 25-35 parts of 3, 3-dimethyl-4, 4-diaminodicyclohexylmethane, 0.5-5 parts of an amino coupling agent and 200-1000 parts of an organic solvent. The primer had the following properties: the epoxy resin is used as a main component, and the adhesiveness of the epoxy resin and the epoxy core rod is excellent; the 3, 3-dimethyl-4, 4-diaminodicyclohexyl methane and the amino coupling agent have good compatibility with chlorinated polyolefin, and the epoxy adhesive prepared by curing has excellent high-temperature resistance; and a small amount of chlorinated polypropylene resin is added, so that the adhesion with a polyolefin material is improved, and the high temperature resistance of the epoxy adhesive is not influenced.
The modified chlorinated polypropylene adhesive (surface adhesive) comprises the following components: according to the weight portion, 20-80 portions of chlorinated polypropylene with 15-30% of chlorine content, 20-80 portions of chlorinated polypropylene with 50-65% of chlorine content, 0.5-20 portions of epoxy resin, 0.15-6 portions of 3, 3-dimethyl-4, 4-diaminodicyclohexyl methane, 0.2-2 portions of amino coupling agent and 200-1000 portions of organic solvent. The surface glue has the following characteristics: the chlorinated polypropylene resin is used as a main component, has excellent adhesion with polyolefin materials, and has outstanding acid-base corrosion resistance and water resistance; and a small amount of epoxy glue is used for modification, so that the matching property of the chlorinated polypropylene resin and the primer is improved, and the crystallinity and the high temperature resistance of the chlorinated polypropylene resin are not influenced.
The amino coupling agent is one or a composition of more than two of N-beta- (aminoethyl) -gamma-aminopropylmethyldimethoxysilane, N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane and gamma-aminopropyltriethoxysilane.
The organic solvent is one or a composition of more than two of toluene, xylene, butanone, pentanone, ethyl acetate, propyl acetate, tetrahydrofuran or cyclohexane. The composition is not particularly limited as long as the adhesive composition can be dissolved.
The using method comprises the following steps: (1) fully stirring and uniformly mixing the chlorinated polypropylene modified epoxy adhesive (primer), and brushing the epoxy adhesive on an epoxy core rod to a thickness of 5-40 mu m. Drying for 10-20 minutes at room temperature, and then placing in an oven at 70-100 ℃ for curing for 1-3 hours; (2) fully stirring and uniformly mixing the modified chlorinated polypropylene adhesive (surface adhesive), brushing the mixture on a cured epoxy core rod coated with primer, drying the epoxy core rod for 10-20 minutes at room temperature, and curing the epoxy core rod in an oven at 70-100 ℃ for 1-3 hours; (3) and (3) placing the cured epoxy core rod coated with the base glue and the surface glue in a mould, and injecting the polyolefin material at 180-230 ℃ and 10MPa to form the umbrella cover or the sheath.
Adhesive strength test: the epoxy core rod with the polyolefin umbrella sleeve or sheath is cut into a cylinder with the height of 10mm, and the measured bonding shear strength can reach 3.5-6.5 MPa.
Compared with the prior art, the invention has the beneficial effects that:
(1) through the combined design and the matched use of the primer and the surface glue, the good adhesion of the polyolefin umbrella sleeve or the sheath and the epoxy core rod is ensured, the excellent high temperature resistance of the adhesive is also kept, and the 180-230 ℃ high-temperature injection molding process condition of the polyolefin umbrella sleeve or the sheath is met; (2) the adhesive strength between the polyolefin umbrella sleeve or sheath and the epoxy core rod is improved by more than 2 times compared with the physical effect generated by cooling and shrinking after polyolefin material is subjected to hot injection molding (180-230 ℃) in the existing production; in addition, the adhesive composition has excellent acid-base corrosion resistance and water resistance, can further protect the epoxy core rod, and reduces brittle fracture and ablation failure caused by acid-base corrosion, hydrolysis and other problems. The invention greatly improves the operation reliability and the service life of the polyolefin composite insulator.
Detailed Description
Example 1
Preparation: (1) chlorinated polypropylene modified epoxy adhesive (primer): weighing 100 parts of bisphenol A type epoxy resin, 15 parts of chlorinated polyolefin with the chlorine content of 22%, 30 parts of 3, 3-dimethyl-4, 4-diaminodicyclohexylmethane, 1 part of N-beta- (aminoethyl) -gamma-aminopropylmethyldimethoxysilane, 300 parts of butanone and 300 parts of cyclohexane in parts by weight, and uniformly stirring and mixing to prepare the primer D1. (2) Modified chlorinated polypropylene adhesive (face glue): according to the weight portion, 70 portions of chlorinated polyolefin with 22 percent of chlorine content, 30 portions of chlorinated polyolefin with 60 percent of chlorine content, 10 portions of bisphenol A type epoxy resin, 3 portions of 3, 3-dimethyl-4, 4-diaminodicyclohexyl methane, 0.5 portion of N-beta- (aminoethyl) -gamma-aminopropyl methyl dimethoxy silane, 400 portions of butanone and 200 portions of cyclohexane are weighed and stirred and mixed evenly to prepare the face adhesive M1.
The using method comprises the following steps: (1) uniformly brushing the primer D1 on an epoxy core rod, wherein the brushing thickness is 15 mu m, drying at room temperature for 15 minutes, and then placing in an oven at 80 ℃ for curing for 1 hour; (2) taking out the epoxy core rod coated with the primer D1 from the oven, coating the surface glue M1 with the thickness of 15 mu M, drying for 15 minutes at room temperature, and then placing the epoxy core rod in an oven at 80 ℃ for curing for 1 hour; (3) the cured epoxy core rod coated with the base glue and the surface glue is placed in a mould, and the polyolefin material is injected and molded into the umbrella cover or the sheath at 210 ℃ and 10 MPa.
Adhesive strength test: the epoxy core rod with the polyolefin umbrella or sheath was cut into a cylinder of 10mm height and the bond shear strength was measured to be 4.2 MPa.
Example 2
Preparation: (1) chlorinated polypropylene modified epoxy adhesive (primer): weighing 100 parts of bisphenol F type epoxy resin, 20 parts of chlorinated polyolefin with the chlorine content of 24%, 28 parts of 3, 3-dimethyl-4, 4-diaminodicyclohexylmethane, 1 part of N-beta- (aminoethyl) -gamma-aminopropylmethyldimethoxysilane, 1 part of gamma-aminopropyltriethoxysilane, 300 parts of toluene and 300 parts of tetrahydrofuran in parts by weight, and uniformly stirring and mixing to prepare the primer D2. (2) Modified chlorinated polypropylene adhesive (face glue): according to the weight portion, 40 portions of chlorinated polyolefin with 24 percent of chlorine content, 60 portions of chlorinated polyolefin with 65 percent of chlorine content, 5 portions of bisphenol F type epoxy resin, 1.5 portions of 3, 3-dimethyl-4, 4-diaminodicyclohexyl methane, 0.5 portion of N-beta- (aminoethyl) -gamma-aminopropyl methyl dimethoxy silane, 0.5 portion of gamma-aminopropyl triethoxy silane, 400 portions of toluene and 200 portions of tetrahydrofuran are weighed and stirred and mixed evenly to prepare the face glue M2.
The using method comprises the following steps: (1) uniformly brushing the primer D2 on an epoxy core rod, wherein the brushing thickness is 10 mu m, drying at room temperature for 15 minutes, and then placing in an oven at 75 ℃ for curing for 1.5 hours; (2) taking out the epoxy core rod coated with the primer D2 from the oven, coating the surface glue M2 with the thickness of 10 mu M, drying for 15 minutes at room temperature, and placing the epoxy core rod in an oven at 75 ℃ for curing for 1.5 hours; (3) and (3) placing the cured epoxy core rod coated with the base glue and the surface glue in a mould, and injecting and molding the polyolefin material into the umbrella cover or the sheath at 200 ℃ and 10 MPa.
Adhesive strength test: the epoxy core rod with polyolefin umbrella or sheath was cut into 10mm high cylinders and the bond shear strength was measured to be 5.5 MPa.
Blank control sample
In the production of the polyolefin composite insulator, the umbrella cover or the sheath is combined with the epoxy core rod by the physical action generated by cooling and shrinking after polyolefin material thermal injection molding (180-230 ℃) as a blank comparison sample: the epoxy core rod without the primer and the surface glue is placed in a mould, the polyolefin material is injected and molded into an umbrella cover or a sheath at 200 ℃ and 10MPa, then the umbrella cover or the sheath is cut into a cylinder with the height of 10mm, and the measured bonding shear strength is 1.2 MPa.
Claims (2)
1. The adhesive composition for the polyolefin composite insulator is characterized in that the adhesive composition consists of a chlorinated polypropylene modified epoxy adhesive and a modified chlorinated polypropylene adhesive;
wherein the chlorinated polypropylene modified epoxy adhesive comprises the following components: 100 parts of epoxy resin, 5-20 parts of chlorinated polypropylene with the chlorine content of 15-30%, 25-35 parts of 3, 3 '-dimethyl-4, 4' -diaminodicyclohexylmethane, 0.5-5 parts of amino coupling agent and 200-1000 parts of organic solvent;
wherein the modified chlorinated polypropylene adhesive comprises the following components: according to parts by weight, 20-80 parts of chlorinated polypropylene with chlorine content of 15-30%, 20-80 parts of chlorinated polypropylene with chlorine content of 50-65%, 0.5-20 parts of epoxy resin, 0.15-6 parts of 3, 3 '-dimethyl-4, 4' -diaminodicyclohexylmethane, 0.2-2 parts of amino coupling agent and 200-1000 parts of organic solvent.
2. The adhesive composition of claim 1, wherein the adhesive composition is used for bonding a polyolefin composite insulator chute to an epoxy core rod, or for bonding a polyolefin composite insulator jacket to an epoxy core rod.
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| CN201811652644.3A CN109852311B (en) | 2018-12-29 | 2018-12-29 | Adhesive composition for polyolefin composite insulator |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110951432B (en) * | 2019-12-24 | 2021-11-23 | 杭州格鹭科技有限公司 | Epoxy resin building structural adhesive and preparation method thereof |
| CN113322027B (en) * | 2021-06-29 | 2022-02-22 | 南京大学 | Epoxy modified chlorinated polypropylene adhesive |
| CN113861893B (en) * | 2021-10-27 | 2022-08-19 | 瑞易德新材料股份有限公司 | Epoxy modified chlorinated polypropylene adhesive |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876270A (en) * | 2012-09-20 | 2013-01-16 | 吴江市天源塑胶有限公司 | Epoxy resin conducting adhesive with high bonding strength |
| CN103194015A (en) * | 2013-04-22 | 2013-07-10 | 江苏金三力电力器材实业有限公司 | Preparation method of modified polymer insulator material |
| CN104185650A (en) * | 2012-03-28 | 2014-12-03 | 日本制纸株式会社 | Chlorinated polyolefin resin composition |
| CN104610890A (en) * | 2015-01-07 | 2015-05-13 | 江苏斯德瑞克化工有限公司 | Preparation method of modified chlorinated polypropylene adhesive |
| CN206758193U (en) * | 2017-05-10 | 2017-12-15 | 江苏金三力电力器材实业有限公司 | A kind of roof polymerization crystal silicon insulator |
| CN208173313U (en) * | 2018-05-21 | 2018-11-30 | 国网河南省电力公司电力科学研究院 | A kind of anti-birds droppings unfirmly closing composite insulator of hard big full skirt |
-
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104185650A (en) * | 2012-03-28 | 2014-12-03 | 日本制纸株式会社 | Chlorinated polyolefin resin composition |
| CN102876270A (en) * | 2012-09-20 | 2013-01-16 | 吴江市天源塑胶有限公司 | Epoxy resin conducting adhesive with high bonding strength |
| CN103194015A (en) * | 2013-04-22 | 2013-07-10 | 江苏金三力电力器材实业有限公司 | Preparation method of modified polymer insulator material |
| CN104610890A (en) * | 2015-01-07 | 2015-05-13 | 江苏斯德瑞克化工有限公司 | Preparation method of modified chlorinated polypropylene adhesive |
| CN206758193U (en) * | 2017-05-10 | 2017-12-15 | 江苏金三力电力器材实业有限公司 | A kind of roof polymerization crystal silicon insulator |
| CN208173313U (en) * | 2018-05-21 | 2018-11-30 | 国网河南省电力公司电力科学研究院 | A kind of anti-birds droppings unfirmly closing composite insulator of hard big full skirt |
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