CN108997632A - A kind of weather-proof PE composition and preparation method thereof - Google Patents
A kind of weather-proof PE composition and preparation method thereof Download PDFInfo
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- CN108997632A CN108997632A CN201810662695.8A CN201810662695A CN108997632A CN 108997632 A CN108997632 A CN 108997632A CN 201810662695 A CN201810662695 A CN 201810662695A CN 108997632 A CN108997632 A CN 108997632A
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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
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- 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
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/26—Polymers or copolymers of unsaturated carboxylic acids or derivatives thereof
- D06M2101/28—Acrylonitrile; Methacrylonitrile
Abstract
The present invention relates to PE technical field of compositions, more particularly to a kind of weather-proof PE composition and preparation method thereof, PE composition includes the raw material of following parts by weight: LDPE70-110 parts, fine 10-20 part of the mixture of wood, 0.1-1 part of antioxidant, 0.1-1 parts of heat stabilizer, 1-3 parts of lubricant, 2-4 parts of compatilizer, the wooden fibre mixture form by polyacrylonitrile fibre silk and nano lignin dispersion mixing.PE composition of the invention has preferable tensile strength, elongation at break and impact strength, and also has good ageing resistance, thus also has good weatherability, and preparation method is simple and efficient, and is conducive to industrialized production.
Description
Technical field
The present invention relates to PE technical field of compositions, and in particular to a kind of weather-proof PE composition and preparation method thereof.
Background technique
Lignin is a kind of high molecular polymer being widely present in most of land plant cell wall.Lignin molecule
In contain polyhydric phenols structure, be used as the anti-aging agent of vinyon, can overcome the disadvantages that small molecule plastics anti-aging agent easily shifts, has
The disadvantages of malicious, expensive, while dependence of the people to non-renewable resources is reduced, have to the sustainable development for realizing resource
Significance.
But lignin, due to the presence of surface hydroxyl, dispersibility is poor in vinyon, and capacity increasing modifying is difficult,
It is easy to happen agglomeration, so that composition melt fluidity reduces, squeezes out difficulty, composite material obtained is easy to produce stress
Concentration phenomenon, globality are deteriorated, and tensile strength, elongation at break and impact strength decrease.
Thus, lignin has been widely studied with composite of wood and plastics made of vinyon resin alloy at present, however
Lignin is less as the research of the functional aid of vinyon.
Summary of the invention
In order to overcome shortcoming and defect existing in the prior art, the purpose of the present invention is to provide one kind with lignin is
Auxiliary agent realizes the PE composition of weatherability, ageing resistance, and improves tensile strength, elongation at break and the anti-impact of PE composition
Hit intensity；Another object of the present invention is to provide the preparation method of the PE composition, which is simple and efficient, and is conducive to work
Industry metaplasia produces.
The purpose of the invention is achieved by the following technical solution:
A kind of weather-proof PE composition, the raw material including following parts by weight:
The fine mixture of wood is formed by polyacrylonitrile fibre silk and nano lignin dispersion mixing.
Lignin contains a large amount of glycerol-β-guaiaci lignum acid esters, and glycerol-β-guaiaci lignum acid esters easily becomes phenols certainly
By base, therefore the ability for making lignin that there is stronger capture hydroperoxides free radical, to improve the antioxygen of PE composition
Change ability.
The present invention uses the nano lignin with high-specific surface area, can increase lignin and imitate to the capture of free radical
Rate, while in order to solve the consistency problem of nano lignin and PE, the present invention is by nano lignin and polyacrylonitrile fibre silk
Mixing dispersion is carried out, so that nano lignin is depended on the surface of polyacrylonitrile fibre silk by hydrogen bonding, so that nanometer is wooden
The distribution of element has the internetworking of polyacrylonitrile fibre element, thus lignin can be uniform using polyacrylonitrile fibre silk as carrier
It is scattered in PE, stress concentration phenomenon will not occur.Secondly, wood fibre mixture is due to the web with polyacrylonitrile fibre silk
The high intensity of network and lignin, therefore can effectively improve tensile strength, elongation at break and the anti-impact of PE composition
Hit intensity.
The present invention preferably has the polyacrylonitrile fibre silk of appropriate draw ratio and length, can effectively improve nano lignin
Distributivity and the fine mixture of wood to the enhancement of PE composition；And use high porosity, Gao Kongrong, appropriate aperture poly- third
The lignin of alkene nitrile fiber filament and appropriate partial size can be improved it with lignin and be bonded adsorption capacity, to improve the wooden fibre
The stability of mixture.
It is thus preferred that the length of the polyacrylonitrile fibre silk is 12.1-23.5 μm, diameter 124-165nm, hole
Gap rate is 67%-84%, aperture 10.3-16.4nm, Kong Rongwei 7.83-12.14mL/g, the average grain of the nano lignin
Diameter is 21-56nm.
Wherein, the preparation method of the polyacrylonitrile fibre silk includes the following steps:
A, polyacrylonitrile is dissolved in n,N-Dimethylformamide and forms spinning solution, the polypropylene in the spinning solution
Nitrile mass concentration is 20-40wt%, then carries out electrostatic spinning, obtains polyacrylonitrile fibril；
B, the polyacrylonitrile fibril is soaked in deionized water, is then centrifuged for, is freeze-dried and gathers to get to described
Dralon silk.
The present invention makes polyacrylonitrile fibre silk have the property of appropriate draw ratio by electrostatic spinning, then impregnates and freezes
It is dry, make the moisture sublimation from the frozen state filled in polyacrylonitrile fibril, thus improve the porosity of polyacrylonitrile fibre silk, aperture with
And Kong Rong, conducive to the absorption to nano lignin, while the network stabilization of polyacrylonitrile fibre silk is also maintained, avoided molten
Melt fibrous fracture in mixed process so as to cause generation the phenomenon that the strength reduction of PE composition.
Wherein, in the step A, the spinning voltage of electrostatic spinning is 20-40kV, and spinning temperature is 30-40 DEG C, the step
In rapid B, the temperature of freeze-drying is -60~-20 DEG C.
Suitable control is carried out by the condition to electrostatic spinning, can effectively improve the structural stability of polyacrylonitrile fibril
And length homogeneity；And by the control to freeze-drying temperature, it can be effectively improved the porous structure of polyacrylonitrile fibril,
There is porous polyacrylonitrile fibre silk to be formed.
Wherein, the fine mixture of wood the preparation method is as follows: by nano lignin and polyacrylonitrile fibre silk be added to
In deionized water, ultrasonic disperse 2-4h is carried out, it is centrifuge washing, dry to get to the fine mixture of wood, wherein nano wood
The mass ratio of quality, polyacrylonitrile fibre silk and deionized water is 1:8-10:80-100.
The present invention realizes the self assembly of nano lignin and polyacrylonitrile fibre silk using ultrasonic disperse technology, passes through XRD
Analysis shows, the carboxyl on nano lignin surface and the hydroxyl in polyacrylonitrile fibre silk table face interact with TGA, form hydrogen
Key preferably depends on stability to have, and by suitable control usage ratio, nano lignin can be improved poly- third
Degree of scatter on alkene nitrile fiber filament.
Wherein, the antioxidant is made of antioxidant 1076 and antioxidant 1010 by weight the ratio of 1-3:1-3.This
Invention can be further improved PE composition by being suitably added the antioxidant being made of antioxidant 1076 and antioxidant 1010
Antioxygenic property, to improve its weatherability.
Wherein, the heat stabilizer is in calcium-zinc composite stabilizing agent, barium zinc compound stabilizer and potassium zinc composite stabilizer
It is at least one.Heat stabilizer selected above can prevent or delay influence of the heat to PE composition properties, assist the fine mixing of wood
Object improves the thermal stability of PE composition, extends the service life of PE composition.It is further preferred that the heat stabilizer by
Calcium-zinc composite stabilizing agent and barium zinc compound stabilizer are formed by weight the ratio of 1-3:1-3, preferably PE can be hindered to combine
The thermal degradation of object.
Wherein, the light stabilizer is bis- (1,2,2,6,6- pentamethyl -4- piperidyl) sebacates and/or poly- (1- hydroxyl
Ethyl -2,2,6,6- tetramethyl -4- hydroxy piperidine) succinate.
Wherein, the lubricant is at least one of calcium stearate, zinc stearate and polyethylene wax.Profit selected above
Lubrication prescription can prevent plastics from generating defect in machine or in mold because of adhesion, it is further preferable that the lubricant is by stearic acid
Calcium and zinc stearate are formed by weight the ratio of 1-3:1-3, and the lubricant of compounding composition can be used as auxiliary heat stabilizer,
Improve the thermal stability of PE composition.
Wherein, the compatilizer is maleic anhydride grafted polyethylene, acrylic acid-grafted polyethylene and Glycidyl methacrylate
At least one of glyceride grafted polyethylene.Compatilizer selected above can promote PE and wood by intermolecular bonding force
The combination of fine mixture, to improve the performances such as the tensile strength of PE composition, impact strength and weatherability.It is more highly preferred to
Ground, the compatilizer is by maleic anhydride grafted polyethylene, acrylic acid-grafted polyethylene and glycidyl methacrylate graft
Polyethylene is formed by weight the ratio of 1:1-3:1-2.
Another object of the present invention is achieved through the following technical solutions:
A kind of preparation method of weather-proof PE composition as described above: each raw material is subjected to mixed melting granulation to get arriving
The weather-proof PE composition.
The beneficial effects of the present invention are:
1, the present invention can be increased lignin and be imitated to the capture of free radical using the nano lignin with high-specific surface area
Rate, while in order to solve the consistency problem of nano lignin and PE, the present invention is by nano lignin and polyacrylonitrile fibre silk
Mixing dispersion is carried out, so that nano lignin is depended on the surface of polyacrylonitrile fibre silk by hydrogen bonding, so that nanometer is wooden
The distribution of element has the internetworking of polyacrylonitrile fibre element, thus lignin can be uniform using polyacrylonitrile fibre silk as carrier
It is scattered in PE, stress concentration phenomenon will not occur.Secondly, wood fibre mixture is due to the web with polyacrylonitrile fibre silk
The high intensity of network and lignin, therefore can effectively improve tensile strength, elongation at break and the anti-impact of PE composition
Hit intensity；
2, the preparation method of PE composition of the present invention is simple and efficient, and is conducive to industrialized production.
Specific embodiment
For the ease of the understanding of those skilled in the art, below with reference to embodiment, the present invention is further illustrated, real
The content that the mode of applying refers to not is limitation of the invention.
Embodiment 1
A kind of weather-proof PE composition, the raw material including following parts by weight:
The fine mixture of wood is formed by polyacrylonitrile fibre silk and nano lignin dispersion mixing.
Wherein, the average grain diameter of the nano lignin is 34nm.
Wherein, the preparation method of the polyacrylonitrile fibre silk includes the following steps:
A, polyacrylonitrile is dissolved in n,N-Dimethylformamide and forms spinning solution, the polypropylene in the spinning solution
Nitrile mass concentration is 30wt%, then carries out electrostatic spinning, obtains polyacrylonitrile fibril；
B, the polyacrylonitrile fibril is soaked in deionized water, is then centrifuged for, is freeze-dried and gathers to get to described
Dralon silk.
Wherein, in the step A, the spinning voltage of electrostatic spinning is 30kV, and spinning temperature is 35 DEG C, in the step B,
The temperature of freeze-drying is -40 DEG C.
Wherein, the fine mixture of wood the preparation method is as follows: by nano lignin and polyacrylonitrile fibre silk be added to
In deionized water, ultrasonic disperse 3h is carried out, it is centrifuge washing, dry to get to the fine mixture of wood, wherein nanometer is wooden
The mass ratio of element, polyacrylonitrile fibre silk and deionized water is 1:9:90.
Wherein, the antioxidant is made of antioxidant 1076 and antioxidant 1010 by weight the ratio of 1:1.
Wherein, the heat stabilizer is by calcium-zinc composite stabilizing agent and barium zinc compound stabilizer by weight the ratio group of 1:1
At.
Wherein, the light stabilizer is bis- (1,2,2,6,6- pentamethyl -4- piperidyl) sebacates.
Wherein, the lubricant is made of calcium stearate and zinc stearate by weight the ratio of 1:1.
Wherein, the compatilizer is by maleic anhydride grafted polyethylene, acrylic acid-grafted polyethylene and Glycidyl methacrylate
Glyceride grafted polyethylene is formed by weight the ratio of 1:2:1.5.
A kind of preparation method of weather-proof PE composition as described above: each raw material is subjected to mixed melting granulation to get arriving
The weather-proof PE composition.
Embodiment 2
A kind of weather-proof PE composition, the raw material including following parts by weight:
The fine mixture of wood is formed by polyacrylonitrile fibre silk and nano lignin dispersion mixing.
Wherein, the average grain diameter of the nano lignin is 21nm.
Wherein, the preparation method of the polyacrylonitrile fibre silk includes the following steps:
A, polyacrylonitrile is dissolved in n,N-Dimethylformamide and forms spinning solution, the polypropylene in the spinning solution
Nitrile mass concentration is 20wt%, then carries out electrostatic spinning, obtains polyacrylonitrile fibril；
B, the polyacrylonitrile fibril is soaked in deionized water, is then centrifuged for, is freeze-dried and gathers to get to described
Dralon silk.
Wherein, in the step A, the spinning voltage of electrostatic spinning is 20kV, and spinning temperature is 30 DEG C, in the step B,
The temperature of freeze-drying is -60 DEG C.
Wherein, the fine mixture of wood the preparation method is as follows: by nano lignin and polyacrylonitrile fibre silk be added to
In deionized water, ultrasonic disperse 2h is carried out, it is centrifuge washing, dry to get to the fine mixture of wood, wherein nanometer is wooden
The mass ratio of element, polyacrylonitrile fibre silk and deionized water is 1:8:80.
Wherein, the antioxidant is made of antioxidant 1076 and antioxidant 1010 by weight the ratio of 1:3.
Wherein, the light stabilizer is bis- (1,2,2,6,6- pentamethyl -4- piperidyl) sebacates.
Wherein, the heat stabilizer is by calcium-zinc composite stabilizing agent and barium zinc compound stabilizer by weight the ratio group of 1:3
At.
Wherein, the lubricant is made of calcium stearate and zinc stearate by weight the ratio of 1:3.
Wherein, the compatilizer is by maleic anhydride grafted polyethylene, acrylic acid-grafted polyethylene and Glycidyl methacrylate
Glyceride grafted polyethylene is formed by weight the ratio of 1:1:1.
A kind of preparation method of weather-proof PE composition as described above: each raw material is subjected to mixed melting granulation to get arriving
The weather-proof PE composition.
Embodiment 3
A kind of weather-proof PE composition, the raw material including following parts by weight:
The fine mixture of wood is formed by polyacrylonitrile fibre silk and nano lignin dispersion mixing.
Wherein, the average grain diameter of the nano lignin is 56nm.
Wherein, the preparation method of the polyacrylonitrile fibre silk includes the following steps:
A, polyacrylonitrile is dissolved in n,N-Dimethylformamide and forms spinning solution, the polypropylene in the spinning solution
Nitrile mass concentration is 40wt%, then carries out electrostatic spinning, obtains polyacrylonitrile fibril；
B, the polyacrylonitrile fibril is soaked in deionized water, is then centrifuged for, is freeze-dried and gathers to get to described
Dralon silk.
Wherein, in the step A, the spinning voltage of electrostatic spinning is 40kV, and spinning temperature is 40 DEG C, in the step B,
The temperature of freeze-drying is -20 DEG C.
Wherein, the fine mixture of wood the preparation method is as follows: by nano lignin and polyacrylonitrile fibre silk be added to
In deionized water, ultrasonic disperse 4h is carried out, it is centrifuge washing, dry to get to the fine mixture of wood, wherein nanometer is wooden
The mass ratio of element, polyacrylonitrile fibre silk and deionized water is 1:10:100.
Wherein, the antioxidant is made of antioxidant 1076 and antioxidant 1010 by weight the ratio of 3:1.
Wherein, the light stabilizer is bis- (1,2,2,6,6- pentamethyl -4- piperidyl) sebacates.
Wherein, the heat stabilizer is by calcium-zinc composite stabilizing agent and barium zinc compound stabilizer by weight the ratio group of 3:1
At.
Wherein, the lubricant is made of calcium stearate and zinc stearate by weight the ratio of 3:1.
Wherein, the compatilizer is by maleic anhydride grafted polyethylene, acrylic acid-grafted polyethylene and Glycidyl methacrylate
Glyceride grafted polyethylene is formed by weight the ratio of 1:3:2.
A kind of preparation method of weather-proof PE composition as described above: each raw material is subjected to mixed melting granulation to get arriving
The weather-proof PE composition.
Embodiment 4
A kind of weather-proof PE composition, the raw material including following parts by weight:
The fine mixture of wood is formed by polyacrylonitrile fibre silk and nano lignin dispersion mixing.
Wherein, the average grain diameter of the nano lignin is 30nm.
Wherein, the preparation method of the polyacrylonitrile fibre silk includes the following steps:
A, polyacrylonitrile is dissolved in n,N-Dimethylformamide and forms spinning solution, the polypropylene in the spinning solution
Nitrile mass concentration is 25wt%, then carries out electrostatic spinning, obtains polyacrylonitrile fibril；
B, the polyacrylonitrile fibril is soaked in deionized water, is then centrifuged for, is freeze-dried and gathers to get to described
Dralon silk.
Wherein, in the step A, the spinning voltage of electrostatic spinning is 25kV, and spinning temperature is 33 DEG C, in the step B,
The temperature of freeze-drying is -50 DEG C.
Wherein, the fine mixture of wood the preparation method is as follows: by nano lignin and polyacrylonitrile fibre silk be added to
In deionized water, ultrasonic disperse 2.5h is carried out, it is centrifuge washing, dry to get to the fine mixture of wood, wherein nano wood
The mass ratio of quality, polyacrylonitrile fibre silk and deionized water is 1:9:100.
Wherein, the antioxidant is made of antioxidant 1076 and antioxidant 1010 by weight the ratio of 2:1.
Wherein, the heat stabilizer is potassium zinc composite stabilizer.
Wherein, the light stabilizer is poly- (1- ethoxy -2,2,6,6- tetramethyl -4- hydroxy piperidines) succinate.
Wherein, the lubricant is made of calcium stearate and zinc stearate by weight the ratio of 1:2.
Wherein, the compatilizer is maleic anhydride grafted polyethylene.
A kind of preparation method of weather-proof PE composition as described above: each raw material is subjected to mixed melting granulation to get arriving
The weather-proof PE composition.
Embodiment 5
A kind of weather-proof PE composition, the raw material including following parts by weight:
The fine mixture of wood is formed by polyacrylonitrile fibre silk and nano lignin dispersion mixing.
Wherein, the average grain diameter of the nano lignin is 48nm.
Wherein, the preparation method of the polyacrylonitrile fibre silk includes the following steps:
A, polyacrylonitrile is dissolved in n,N-Dimethylformamide and forms spinning solution, the polypropylene in the spinning solution
Nitrile mass concentration is 35wt%, then carries out electrostatic spinning, obtains polyacrylonitrile fibril；
B, the polyacrylonitrile fibril is soaked in deionized water, is then centrifuged for, is freeze-dried and gathers to get to described
Dralon silk.
Wherein, in the step A, the spinning voltage of electrostatic spinning is 35kV, and spinning temperature is 38 DEG C, in the step B,
The temperature of freeze-drying is -30 DEG C.
Wherein, the fine mixture of wood the preparation method is as follows: by nano lignin and polyacrylonitrile fibre silk be added to
In deionized water, ultrasonic disperse 3.5h is carried out, it is centrifuge washing, dry to get to the fine mixture of wood, wherein nano wood
The mass ratio of quality, polyacrylonitrile fibre silk and deionized water is 1:10:80.
Wherein, the antioxidant is made of antioxidant 1076 and antioxidant 1010 by weight the ratio of 1:2.
Wherein, the heat stabilizer is the ratio group of calcium-zinc composite stabilizing agent and potassium zinc composite stabilizer by weight 1:1
At.
Wherein, the light stabilizer is poly- (1- ethoxy -2,2,6,6- tetramethyl -4- hydroxy piperidines) succinate.
Wherein, the lubricant is made of calcium stearate and polyethylene wax by weight the ratio of 1:1.
Wherein, the compatilizer is acrylic acid-grafted polyethylene.
A kind of preparation method of weather-proof PE composition as described above: each raw material is subjected to mixed melting granulation to get arriving
The weather-proof PE composition.
Comparative example 1
This comparative example 1 the difference from embodiment 1 is that: with etc. quality average grain diameter be 34nm lignin replacement wood it is fine
PE composition is made in mixture.
Comparative example 2
This comparative example 2 the difference from embodiment 1 is that: with etc. quality the fine mixture of polyacrylonitrile fibre silk replacement wood,
PE composition is made.
Comparative example 3
This comparative example 3 the difference from embodiment 1 is that: do not include the wooden fine mixture in PE composition.
In above embodiments 1-5 and comparative example 2, the length of the polyacrylonitrile fibre silk is 12.1-23.5 μm, and diameter is
124-165nm, porosity 67%-84%, aperture 10.3-16.4nm, Kong Rongwei 7.83-12.14mL/g.
Tensile strength, elongation at break and impact strength are carried out to the PE composition of embodiment 1-5 and comparative example 1-3
Test, is then respectively classified into A batch and B batch for the PE composition of each embodiment and comparative example, the PE composition of A batch is pressed
According to " GB/T 7141-2008 plastics thermal aging test method " carry out thermo-oxidative ageing, and test the tensile strength after thermo-oxidative ageing,
Elongation at break and impact strength；The PE composition of B batch is according to " ASTM G154-2006 nonmetallic materials ultraviolet exposure
Standard convention is used with fluorescence equipment " ultraviolet ageing is carried out, and test the tensile strength after ultraviolet ageing, elongation at break and resist
Impact strength, and the conservation rate after properties aging is calculated, test result is as follows:
By the properties performance of the comparative example 3 of upper table it is found that LDPE has good comprehensive performance, but in anti-aging table
It is existing poor.
By the comparison of comparative example 1 and comparative example 3 it is found that lignin can effectively improve PE composition on anti-aging
Performance, but lignin be directly added into will lead to tensile strength and elongation at break performance decline.
By the comparison of comparative example 2 and comparative example 3 it is found that the addition of polyacrylonitrile fibre silk can effectively improve PE combination
Tensile strength, elongation at break and the impact strength of object, but it is little for the contribution of ageing-resistant performance.
By the comparison of embodiment 1, comparative example 1, comparative example 2 and comparative example 3 it is found that the fine composition ratio of wood of the invention is single
One lignin or polyacrylonitrile fibre silk promotes journey to the tensile strength of PE composition, elongation at break and impact strength
It spends bigger, it is seen that the fine composition of wood of the invention is not only merely simple material effect superposition, but enterprising in microstructure
It has gone improvement, has been distributed in lignin on the network of polyacrylonitrile fibre silk, thus realize the technical effect of 1+1 > 2, though and
It is a bit weaker that lignin so is directly added into ageing resistance ratio, but still is had with preferable ageing resistance, and industrial requirement is met.
It is logical by the comparison of embodiment 1-5 it is found that every materials of the invention and parameter selection do not choose at random
It crosses and optimizes the more excellent effect that PE composition may be implemented.
In conclusion PE composition of the invention has preferable tensile strength, elongation at break and impact strength, and
And also there is good ageing resistance, thus also there is good weatherability.
Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other way,
Do not depart under the premise of present inventive concept it is any obviously replace it is within the scope of the present invention.
Claims (10)
1. a kind of weather-proof PE composition, it is characterised in that: the raw material including following parts by weight:
The fine mixture of wood is formed by polyacrylonitrile fibre silk and nano lignin dispersion mixing.
2. a kind of weather-proof PE composition according to claim 1, it is characterised in that: the length of the polyacrylonitrile fibre silk
It is 12.1-23.5 μm, diameter 124-165nm, porosity 67%-84%, aperture 10.3-16.4nm, Kong Rongwei 7.83-
12.14mL/g, the average grain diameter of the nano lignin are 21-56nm.
3. a kind of weather-proof PE composition according to claim 1 or 2, it is characterised in that: the polyacrylonitrile fibre silk
Preparation method includes the following steps:
A, polyacrylonitrile is dissolved in n,N-Dimethylformamide and forms spinning solution, the polyacrylonitrile matter in the spinning solution
Amount concentration is 20-40wt%, then carries out electrostatic spinning, obtains polyacrylonitrile fibril；
B, the polyacrylonitrile fibril is soaked in deionized water, is then centrifuged for, is freeze-dried to get the polypropylene is arrived
Nitrile fiber filament.
4. a kind of weather-proof PE composition according to claim 3, it is characterised in that: in the step A, the spinning of electrostatic spinning
Filament voltage is 20-40kV, and spinning temperature is 30-40 DEG C, and in the step B, the temperature of freeze-drying is -60~-20 DEG C.
5. a kind of weather-proof PE composition according to claim 1, it is characterised in that: the preparation method of the fine mixture of wood
It is as follows: nano lignin and polyacrylonitrile fibre silk are added into deionized water, progress ultrasonic disperse 2-4h, centrifuge washing,
It dries to get the fine mixture of the wood is arrived, wherein the mass ratio of nano lignin, polyacrylonitrile fibre silk and deionized water
For 1:8-10:80-100.
6. a kind of weather-proof PE composition according to claim 1, it is characterised in that: the antioxidant is by antioxidant 1076
Ratio with antioxidant 1010 by weight 1-3:1-3 forms.
7. a kind of weather-proof PE composition according to claim 1, it is characterised in that: the heat stabilizer is that Ca Zn composite is steady
Determine at least one of agent, barium zinc compound stabilizer and potassium zinc composite stabilizer.
8. a kind of weather-proof PE composition according to claim 1, it is characterised in that: the lubricant is calcium stearate, firmly
At least one of resin acid zinc and polyethylene wax.
9. a kind of weather-proof PE composition according to claim 1, it is characterised in that: the compatilizer is maleic anhydride grafting
At least one of polyethylene, acrylic acid-grafted polyethylene and glycidyl methacrylate graft polyethylene.
10. a kind of preparation method of weather-proof PE composition described in -9 any one according to claim 1, it is characterised in that: will
Each raw material carries out mixed melting and is granulated to get the weather-proof PE composition is arrived.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111234499A (en) * | 2020-02-18 | 2020-06-05 | 东莞市高能高分子材料有限公司 | PC/ABS composite material and preparation method thereof |
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