CN104987569A - Flame-retardant silane crosslinked polyethylene insulating composite material and preparation method thereof - Google Patents

Flame-retardant silane crosslinked polyethylene insulating composite material and preparation method thereof Download PDF

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Publication number
CN104987569A
CN104987569A CN201510354434.6A CN201510354434A CN104987569A CN 104987569 A CN104987569 A CN 104987569A CN 201510354434 A CN201510354434 A CN 201510354434A CN 104987569 A CN104987569 A CN 104987569A
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flame
parts
composite material
insulating composite
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吴春云
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Hefei Lanke New Materials Co Ltd
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Hefei Lanke New Materials Co Ltd
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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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • 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

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a flame-retardant silane crosslinked polyethylene insulating composite material. The material is characterized by being composed of, by weight, 120-150 parts of low-density polyethylene resin, 10-15 parts of asbestos powder, 8-12 parts of mica powder, 1-2 parts of zinc borate, 2-4 parts of phenolic novolac resin, 2-3 parts of polypropylene glycol, 0.5-1 part of pentaerythritol stearate, 2-4 parts of phosphated castor oil, 0.3-0.5 part of methylene diphenyl diisocyanate and 3-6 parts of silane complexing agents. The flame-retardant silane crosslinked polyethylene insulating composite material has high strength and toughness and high weather fastness, water resistance and corrosion resistance, and meanwhile has excellent flame retardant property, high use safety and wide application range.

Description

A kind of flame-retardant organosilane cross-linked poly-ethylene insulating composite material and preparation method thereof
Technical field
The present invention relates to field of compound material, be specifically related to a kind of flame-retardant organosilane cross-linked poly-ethylene insulating composite 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 flame-retardant organosilane cross-linked poly-ethylene insulating composite material, mechanical property, weathering resistance are good, applied range.
The present invention is achieved by the following technical solutions:
A kind of flame-retardant organosilane cross-linked poly-ethylene insulating composite material, it is obtained by the raw material of following weight parts:
Ldpe resin 120-150, asbestos powder 10-15, mica powder 8-12, zinc borate 1-2, linear phenolic resin 2-4, polypropylene glycol 2-3, pentaerythritol stearate 0.5-1, phosphorylation Viscotrol C 2-4, diphenylmethanediisocyanate 0.3-0.5, 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 flame-retardant organosilane cross-linked poly-ethylene insulating composite material, comprises the following steps:
(1) by 400-600 DEG C of calcining 1-2h after asbestos powder and mica powder mixing, add zinc borate 150-200 DEG C of process 0.5-1h after cooling, then co-ground is to 600-800 order, obtains 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) linear phenolic resin is added after being mixed with the base polyurethane prepolymer for use as in (2) by the mixed fillers in (1), 1-2h is stirred prior to 800-1000r/min, add pentaerythritol stearate and the common ball milling 2-4h of phosphorylation Viscotrol C again, obtain modified filler;
(4) first the modified filler in (3) is mixed with ldpe resin, 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 flame-retardant organosilane cross-linked poly-ethylene insulating composite 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, has excellent flame retardant properties simultaneously, safe to use, have wide range of applications.
Embodiment
Non-limiting examples of the present invention is as follows:
A kind of flame-retardant organosilane cross-linked poly-ethylene insulating composite material, is prepared from by the component raw material of following weight (kg):
Ldpe resin 140, asbestos powder 12, mica powder 10, zinc borate 1.5, linear phenolic resin 3, polypropylene glycol 2.5, pentaerythritol stearate 0.5, phosphorylation Viscotrol C 3, diphenylmethanediisocyanate 0.4, silane recombiner 5;
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 flame-retardant organosilane cross-linked poly-ethylene insulating composite material comprises the following steps:
(1) by asbestos powder and the rear 600 DEG C of calcining 1h of mica powder mixing, zinc borate 200 DEG C process 0.5h after cooling, is added, then co-ground to 600 order, 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) linear phenolic resin is added after being mixed with the base polyurethane prepolymer for use as in (2) by the mixed fillers in (1), 1h is stirred prior to 1000r/min, add pentaerythritol stearate and the common ball milling 2h of phosphorylation Viscotrol C again, obtain modified filler;
(4) first the modified filler in (3) is mixed with ldpe resin, 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 flame-retardant organosilane cross-linked poly-ethylene insulating composite 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) 25.9MPa
2 Elongation at break (%) 649
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 (%) -9
4 Oxygen index (%) >30

Claims (2)

1. a flame-retardant organosilane cross-linked poly-ethylene insulating composite material, is characterized in that, it is obtained by the raw material of following weight parts:
Ldpe resin 120-150, asbestos powder 10-15, mica powder 8-12, zinc borate 1-2, linear phenolic resin 2-4, polypropylene glycol 2-3, pentaerythritol stearate 0.5-1, phosphorylation Viscotrol C 2-4, diphenylmethanediisocyanate 0.3-0.5, 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 flame-retardant organosilane cross-linked poly-ethylene insulating composite material according to claim 1, is characterized in that, comprise the following steps:
(1) by 400-600 DEG C of calcining 1-2h after asbestos powder and mica powder mixing, add zinc borate 150-200 DEG C of process 0.5-1h after cooling, then co-ground is to 600-800 order, obtains 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 pentaerythritol stearate and the common ball milling 2-4h of phosphorylation Viscotrol C, obtain modified filler;
(4) first the modified filler in (3) is mixed with ldpe resin, 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 flame-retardant organosilane cross-linked poly-ethylene insulating composite material.
CN201510354434.6A 2015-06-25 2015-06-25 Flame-retardant silane crosslinked polyethylene insulating composite material and preparation method thereof Pending CN104987569A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108587054A (en) * 2018-05-21 2018-09-28 芜湖创科新材料科技有限公司 A kind of high-insulativity composite plastic and preparation process

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CN101456989A (en) * 2008-11-21 2009-06-17 黄泽兴 Multi-functional polyethylene agricultural film
CN102002181A (en) * 2010-12-23 2011-04-06 南京聚隆科技股份有限公司 High-toughness and high-strength polyethylene composite material and preparation method thereof
CN102443211A (en) * 2010-11-03 2012-05-09 如皋市中如化工有限公司 Organosilane crosslinked polyethylene cable material and preparation process thereof
CN102532649A (en) * 2010-12-24 2012-07-04 江苏亨通电力电缆有限公司 Novel low-smoke zero-halogen flame-retardant cable sheath material
CN102827454A (en) * 2012-08-28 2012-12-19 安徽双荣电器电缆有限公司 Polyethylene insulated power cable for coal mines and preparation method thereof
CN102942761A (en) * 2012-10-24 2013-02-27 常州大学 Low smoke halogen-free environment-protection fire-retardation type sheet molding compound and preparation method thereof
CN104072848A (en) * 2014-06-23 2014-10-01 李雪红 Polyethylene wear-resistant plastic
CN104086794A (en) * 2014-07-01 2014-10-08 中国林业科学研究院林产化学工业研究所 Preparation method of polyurethane prepolymer-toughened modified phenolic foam plastic

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101456989A (en) * 2008-11-21 2009-06-17 黄泽兴 Multi-functional polyethylene agricultural film
CN102443211A (en) * 2010-11-03 2012-05-09 如皋市中如化工有限公司 Organosilane crosslinked polyethylene cable material and preparation process thereof
CN102002181A (en) * 2010-12-23 2011-04-06 南京聚隆科技股份有限公司 High-toughness and high-strength polyethylene composite material and preparation method thereof
CN102532649A (en) * 2010-12-24 2012-07-04 江苏亨通电力电缆有限公司 Novel low-smoke zero-halogen flame-retardant cable sheath material
CN102827454A (en) * 2012-08-28 2012-12-19 安徽双荣电器电缆有限公司 Polyethylene insulated power cable for coal mines and preparation method thereof
CN102942761A (en) * 2012-10-24 2013-02-27 常州大学 Low smoke halogen-free environment-protection fire-retardation type sheet molding compound and preparation method thereof
CN104072848A (en) * 2014-06-23 2014-10-01 李雪红 Polyethylene wear-resistant plastic
CN104086794A (en) * 2014-07-01 2014-10-08 中国林业科学研究院林产化学工业研究所 Preparation method of polyurethane prepolymer-toughened modified phenolic foam plastic

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108587054A (en) * 2018-05-21 2018-09-28 芜湖创科新材料科技有限公司 A kind of high-insulativity composite plastic and preparation process

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Application publication date: 20151021