CN104877213A - High-stability silane crosslinked polyethylene insulating composite material and preparation method thereof - Google Patents

High-stability silane crosslinked polyethylene insulating composite material and preparation method thereof Download PDF

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Publication number
CN104877213A
CN104877213A CN201510208145.5A CN201510208145A CN104877213A CN 104877213 A CN104877213 A CN 104877213A CN 201510208145 A CN201510208145 A CN 201510208145A CN 104877213 A CN104877213 A CN 104877213A
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parts
crosslinked polyethylene
silane
stability
composite material
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夏云
夏建生
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BENGBU ZHENGYUAN ELECTRONIC TECHNOLOGY Co Ltd
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BENGBU ZHENGYUAN ELECTRONIC TECHNOLOGY Co Ltd
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Priority to CN201510208145.5A priority Critical patent/CN104877213A/en
Publication of CN104877213A publication Critical patent/CN104877213A/en
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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
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4825—Polyethers containing two hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/54—Polycondensates of aldehydes
    • C08G18/542—Polycondensates of aldehydes with phenols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/066—LDPE (radical process)
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2312/00—Crosslinking
    • C08L2312/08—Crosslinking by silane

Abstract

The invention discloses a high-stability silane crosslinked polyethylene insulating composite material. The high-stability silane crosslinked polyethylene insulating composite material is characterized by being prepared from the following raw materials in parts by weight: 120-150 parts of low-density polyethylene resin, 2-4 parts of linear phenol formaldehyde resin, 5-10 parts of carbon fibers, 15-25 parts of mica powder, 2-3 parts of polypropylene glycol, 0.3-0.5 part of diphenylmethane diisocyanate, 2-4 parts of ethylhexyl epoxystearate, 1-2 parts of white mineral oil, 5-10 parts of polybutylene succinate and 3-6 parts of a silane complexing agent. The silane crosslinked polyethylene insulating composite material disclosed by the invention has good strength, toughness, weather resistance, water resistance and corrosion resistance, and is good in quality stability, high in use safety and wide in application range.

Description

A kind of high stability organosilane crosslinked polyethylene insulation matrix material and preparation method thereof
Technical field
The present invention relates to field of compound material, be specifically related to a kind of high stability organosilane crosslinked polyethylene insulation matrix material and preparation method thereof.
Background technology
Polyethylene production is large, abundance, cheap, be a kind of broad-spectrum resin.But poly consistency is low, weathering resistance and mechanical property Shortcomings, over-all properties is poor, needs improving SNR.Wherein, carrying out cross-linking modified to polyethylene is one of important means improving polyethylene performance, can improve the mechanical property of polyethylene products, chemical resistance and resistance to cracking energy etc., widen poly range of application.
Polyethylene crosslinking technology comprises radiation crosslinking, peroxide crosslinking, crosslinked with silicane etc., and wherein organosilane crosslinked polyethylene has that processing unit is simple, the feature of flexible and convenient operation, good economy performance, is paid close attention to widely and payes attention to.Organosilane crosslinked polyethylene has good insulating property, in being mainly used in, the production of low tension wire, cable, has good market outlook and high economic benefit.Along with further developing of the market requirement, silane crosslinked polyethylene also needs the defect improving the aspect such as mechanical property, weathering resistance further, and develop skill index, thus meets the particular requirement of every field.
Summary of the invention
The object of this invention is to provide a kind of high stability organosilane crosslinked polyethylene insulation matrix material, mechanical property, weathering resistance are good, applied range.
The present invention is achieved by the following technical solutions:
A kind of high stability organosilane crosslinked polyethylene insulation matrix material, it is obtained by the raw material of following weight parts:
Ldpe resin 120-150, linear phenolic resin 2-4, carbon fiber 5-10, mica powder 15-25, polypropylene glycol 2-3, diphenylmethanediisocyanate 0.3-0.5, octyl epoxy stearate 2-4, white mineral oil 1-2, poly butylene succinate 5-10, silane recombiner 3-6;
Wherein silane recombiner is obtained by the raw material of following weight parts: silane coupling A-151 1-3, fluorocarbon surfactant FC-4430 0.2-0.4, dicumyl peroxide 0.05-0.1, dibutyl tin laurate 0.1-0.2, antioxidant 1010 0.2-0.5; Preparation method is by the mixing of silane coupling A-151, dicumyl peroxide, dibutyl tin laurate and antioxidant 1010 and 200-400r/min adds fluorocarbon surfactant FC-443 600-800r/min stirring 3-5min again after stirring 10-15min, to obtain final product.
A preparation method for high stability organosilane crosslinked polyethylene insulation matrix material, comprises the following steps:
(1) mica powder is processed 1-2h in 500-600 DEG C, be ground to 600-800 order after cooling, then mix with carbon fiber, obtain mixed fillers;
(2) polypropylene glycol is added vacuum-drying 0.5-1h in reactor, then temperature is adjusted to 70-80 DEG C, and add diphenylmethanediisocyanate 200-400r/min stirring reaction 2-4h under vacuum condition, obtain base polyurethane prepolymer for use as;
(3) add linear phenolic resin after being mixed with the base polyurethane prepolymer for use as in (2) by the mixed fillers in (1), stir 1-2h prior to 800-1000r/min, then add octyl epoxy stearate, the common ball milling 2-4h of white mineral oil, obtain modified filler;
(4) first the modified filler in (3) is mixed with ldpe resin, poly butylene succinate, add all the other raw materials again and mix 5-10min under 80-90 DEG C of condition in high-speed mixer, melt extrude finally by twin screw extruder 165-195 DEG C, granulation, packaging, obtain high stability organosilane crosslinked polyethylene insulation matrix material.
Advantage of the present invention is:
The present invention is cross-linked polyvinyl resin by fluorocarbon surfactant and the composite silane recombiner of silane coupling agent, improve the weathering resistance of matrix material, water tolerance, by base polyurethane prepolymer for use as and resol, composite modified process is carried out to filler simultaneously, both the toughness of filler had been improved, be conducive to the tensile property improving matrix material, turn improve the consistency between filler and matrix, filler is uniformly dispersed in resin, play the effect of reinforcement increase-volume, improve the physical strength of matrix material; Composite simultaneously by all the other raw materials, makes the organosilane crosslinked polyethylene insulation matrix material obtained have good intensity, toughness, weathering resistance and water-fast, corrosion resistance nature good, quality stability is good, safe to use, has wide range of applications.
Embodiment
Non-limiting examples of the present invention is as follows:
A kind of high stability organosilane crosslinked polyethylene insulation matrix material, is prepared from by the component raw material of following weight (kg):
Ldpe resin 140, linear phenolic resin 3, carbon fiber 8, mica powder 20, polypropylene glycol 2.5, diphenylmethanediisocyanate 0.4, octyl epoxy stearate 3, white mineral oil 1.5, poly butylene succinate 8, silane recombiner 4;
Wherein silane recombiner is obtained by the component raw material of following weight (kg): silane coupling A-151 2, fluorocarbon surfactant FC-4430 0.3, dicumyl peroxide 0.08, dibutyl tin laurate 0.15, antioxidant 1010 0.4; Preparation method is by the mixing of silane coupling A-151, dicumyl peroxide, dibutyl tin laurate and antioxidant 1010 and 200r/min adds fluorocarbon surfactant FC-443 800r/min stirring 3min again after stirring 15min, to obtain final product.
The preparation method of high stability organosilane crosslinked polyethylene insulation matrix material comprises the following steps:
(1) mica powder is processed 1h in 600 DEG C, be ground to 800 orders after cooling, then mix with carbon fiber, obtain mixed fillers;
(2) polypropylene glycol is added vacuum-drying 0.5h in reactor, then temperature is adjusted to 80 DEG C, and add diphenylmethanediisocyanate 400r/min stirring reaction 2h under vacuum condition, obtain base polyurethane prepolymer for use as;
(3) add linear phenolic resin after being mixed with the base polyurethane prepolymer for use as in (2) by the mixed fillers in (1), stir 1h prior to 1000r/min, then add octyl epoxy stearate, the common ball milling 2h of white mineral oil, obtain modified filler;
(4) first the modified filler in (3) is mixed with ldpe resin, poly butylene succinate, add all the other raw materials again and mix 5min under 90 DEG C of conditions in high-speed mixer, melt extrude finally by twin screw extruder 165-195 DEG C, granulation, packaging, obtain high stability organosilane crosslinked polyethylene insulation matrix material.
Carry out performance test to above-mentioned obtained matrix material, result is as shown in table 1:
Table 1 organosilane crosslinked polyethylene insulation composite property test result
Numbering Project
1 Tensile strength (MPa) 26.1MPa
2 Elongation at break (%) 618
3 Heat aging performance DEG C × h 135×168
3.1 Tensile strength velocity of variation (%) +10
3.2 Elongation at break velocity of variation (%) -7

Claims (2)

1. a high stability organosilane crosslinked polyethylene insulation matrix material, is characterized in that, it is obtained by the raw material of following weight parts:
Ldpe resin 120-150, linear phenolic resin 2-4, carbon fiber 5-10, mica powder 15-25, polypropylene glycol 2-3, diphenylmethanediisocyanate 0.3-0.5, octyl epoxy stearate 2-4, white mineral oil 1-2, poly butylene succinate 5-10, silane recombiner 3-6;
Described silane recombiner is obtained by the raw material of following weight parts: silane coupling A-151 1-3, fluorocarbon surfactant FC-4430 0.2-0.4, dicumyl peroxide 0.05-0.1, dibutyl tin laurate 0.1-0.2, antioxidant 1010 0.2-0.5; Preparation method is by the mixing of silane coupling A-151, dicumyl peroxide, dibutyl tin laurate and antioxidant 1010 and 200-400r/min adds fluorocarbon surfactant FC-443 600-800r/min stirring 3-5min again after stirring 10-15min, to obtain final product.
2. the preparation method of a kind of high stability organosilane crosslinked polyethylene insulation matrix material according to claim 1, is characterized in that, comprise the following steps:
(1) mica powder is processed 1-2h in 500-600 DEG C, be ground to 600-800 order after cooling, then mix with carbon fiber, obtain mixed fillers;
(2) polypropylene glycol is added vacuum-drying 0.5-1h in reactor, then temperature is adjusted to 70-80 DEG C, and add diphenylmethanediisocyanate 200-400r/min stirring reaction 2-4h under vacuum condition, obtain base polyurethane prepolymer for use as;
(3) add linear phenolic resin after being mixed with the base polyurethane prepolymer for use as in (2) by the mixed fillers in (1), stir 1-2h prior to 800-1000r/min, then add octyl epoxy stearate, the common ball milling 2-4h of white mineral oil, obtain modified filler;
(4) first the modified filler in (3) is mixed with ldpe resin, poly butylene succinate, add all the other raw materials again and mix 5-10min under 80-90 DEG C of condition in high-speed mixer, melt extrude finally by twin screw extruder 165-195 DEG C, granulation, packaging, obtain high stability organosilane crosslinked polyethylene insulation matrix material.
CN201510208145.5A 2015-04-28 2015-04-28 High-stability silane crosslinked polyethylene insulating composite material and preparation method thereof Pending CN104877213A (en)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN105623045A (en) * 2016-02-17 2016-06-01 柳州市乾阳机电设备有限公司 Cable sheath
CN107033435A (en) * 2017-05-05 2017-08-11 武汉理工大学 It is a kind of that there is the preparation method for cooperateing with enhanced compounded mix and modified poly ethylene
CN115028466A (en) * 2022-06-21 2022-09-09 上海鼎炘实业有限公司 Carbon fiber composite material and preparation method thereof
CN117186623A (en) * 2023-09-11 2023-12-08 昆山红苹果塑胶新材料有限公司 Heat-resistant stable TPU film and preparation method thereof

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105623045A (en) * 2016-02-17 2016-06-01 柳州市乾阳机电设备有限公司 Cable sheath
CN107033435A (en) * 2017-05-05 2017-08-11 武汉理工大学 It is a kind of that there is the preparation method for cooperateing with enhanced compounded mix and modified poly ethylene
CN115028466A (en) * 2022-06-21 2022-09-09 上海鼎炘实业有限公司 Carbon fiber composite material and preparation method thereof
CN117186623A (en) * 2023-09-11 2023-12-08 昆山红苹果塑胶新材料有限公司 Heat-resistant stable TPU film and preparation method thereof
CN117186623B (en) * 2023-09-11 2024-02-13 昆山红苹果塑胶新材料有限公司 Heat-resistant stable TPU film and preparation method thereof

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Application publication date: 20150902