CN104194123B - The preparation method of polyacrylonitrile fibre/high-density polyethylene composite material - Google Patents

The preparation method of polyacrylonitrile fibre/high-density polyethylene composite material Download PDF

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CN104194123B
CN104194123B CN201410457708.XA CN201410457708A CN104194123B CN 104194123 B CN104194123 B CN 104194123B CN 201410457708 A CN201410457708 A CN 201410457708A CN 104194123 B CN104194123 B CN 104194123B
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density polyethylene
polyacrylonitrile fibre
hdpe
high density
screw extruder
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CN104194123A (en
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金政
赵静
吴迪
韩金宇
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Shandong Zhonglu Pipe Industry Co ltd
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Heilongjiang University
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/18—Applications used for pipes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
    • 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
    • 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
    • C08L2207/062—HDPE

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

The preparation method of polyacrylonitrile fibre/high-density polyethylene composite material, it relates to matrix material and preparation method. The present invention to be solved the lower problem of the intensity of existing modification high-density polyethylene composite material. The material of the present invention is that the high density polyethylene(HDPE) by 70%��97%, the polyacrylonitrile fibre of 1%��20%, the ��-aminopropyl triethoxysilane coupling agent of 0%��10% and 0.1%��2% antioxidant 1010 are made; Wherein said polyacrylonitrile fibre length is 1��12mm. Method is: is dried by high density polyethylene(HDPE), after polyacrylonitrile fibre preoxidation, is mixed with coupling agent and oxygenant by the high density polyethylene(HDPE) of drying, then raw material is put into twin screw extruder granulation, after injection moulding and get final product. Its tensile strength 21��35MPa, shock strength are 260��370J/m, and flexural strength is 35��65MPa, and modulus in flexure is 1200��1800MPa.

Description

The preparation method of polyacrylonitrile fibre/high-density polyethylene composite material
Technical field
The invention belongs to technical field of polymer materials, it is specifically related to modification high-density polyethylene composite material and its preparation method.
Background technology
High density polyethylene(HDPE) (HDPE), wide and abundant because originating, there is the advantages such as fabulous shock resistance, resistance to compression, creep resistant, the processing of nontoxic inexpensive, easy-formation, demand are big, it it is one of maximum thermoplastic resin of current production rate, it is possible not only to for manufacturing daily plastic goods, and is widely used in the fields such as electric wire, tubing, exterior material.
But there is the problems such as insufficient strength height, toughness are good not in HDPE goods, range of application is restricted. Therefore, HDPE being carried out enhancing modified research, exploitation high-strength and high ductility HDPE composite has become academia and the focus of enterprise's circle concern.
And want to improve significantly HDPE mechanical property, HDPE can be carried out filling enhancing modified. At present conventional filling-modified method has that stiff differential equations is filler modified, fiber-reinforced modified, nanometer particle is filling-modified and whisker reinforced modified. Wherein stiff differential equations is filler modified more conventional, but it exists the problem that density conference makes product weight become high. And artificial synthetic fiber lighter weight, specific tenacity height, it is possible to for the enhancing modified of HDPE. Such as filling polyester staple fiber makes the intensity of matrix material significantly improve.
Polyacrylonitrile fibre (PAN) has specific tenacity height, light weight, corrosion-resistant and lower-price characteristic, is the first-selected strongthener of polymers for general use and cement composite material.
Summary of the invention
The present invention seeks to the problem that the intensity in order to solve existing modification high-density polyethylene composite material is lower, and polyacrylonitrile fibre/high-density polyethylene composite material and preparation method are provided.
Polyacrylonitrile fibre/the high-density polyethylene composite material of the present invention, by mass percentage, it is that the high density polyethylene(HDPE) by 70%��97%, the polyacrylonitrile fibre of 1%��20%, the ��-aminopropyl triethoxysilane coupling agent of 0.1%��10% and 0.1%��2% antioxidant 1010 are made; Wherein said polyacrylonitrile fibre length is 1��12mm.
Polyacrylonitrile fibre/the high-density polyethylene composite material of the present invention, by mass percentage it be the high density polyethylene(HDPE) by 70%��97%, 1%��20% polyacrylonitrile fibre and 0.1%��2% antioxidant 1010 make; Wherein said polyacrylonitrile fibre length is 1��12mm.
The preparation method of the polyacrylonitrile fibre/high-density polyethylene composite material of the present invention, it carries out according to following step:
One, take the high density polyethylene(HDPE) of 70%��97% by mass percentage, the polyacrylonitrile fibre of 1%��20%, the ��-aminopropyl triethoxysilane coupling agent of 0.1%��10% and 0.1%��2% antioxidant 1010 make; Wherein said polyacrylonitrile fibre length is 1��12mm;
Two, high density polyethylene(HDPE) is put into electric heating constant-temperature blowing drying box, dry when temperature is 50 DEG C��70 DEG C, obtain dry high density polyethylene(HDPE); Polyacrylonitrile fibre being put into electric heating constant-temperature blowing drying box and carries out preoxidation, Pre oxidation is 120 DEG C��160 DEG C, and preoxidation time is 1h��4h, obtains the polyacrylonitrile fibre of preoxidation;
Three, by the high density polyethylene(HDPE) of step one drying, ��-aminopropyl triethoxysilane coupling agent and antioxidant 1010 in low speed mixer, mix when rotating speed is 5.0��20.0r/min;
Four, it it is 150 DEG C��200 DEG C in twin-screw extrusion temperature, temperature in injection moulding machine is 190 DEG C��205 DEG C, feeding machine rotating speed on twin screw extruder is 70��100r/min, when screw speed is 20��40r/min, mixed for step 3 raw material is joined twin screw extruder from the spout of twin screw extruder, the polyacrylonitrile fibre of the preoxidation of step 2 is joined after twin screw extruder above the runner mouth in twin screw extruder spout front with the speed of 0.6g/min��12g/min, from twin-screw extrusion, by the matrix material extruded through cold cut machine pelletizing, shaping by injection moulding machine again, namely described polyacrylonitrile fibre/high-density polyethylene composite material is obtained.
The present invention comprises following useful effect:
1, the PAN/HDPE matrix material of the present invention has the advantages such as easy-formation processing, good mechanical property, stable performance, suitability be strong, cheap, can be used as the materials such as daily necessities, tubing, automobile, electric wire, exterior material.
2, the polyacrylonitrile fibre in raw material is as organic filler, before adding high density polyethylene(HDPE), not needing surface modification just can be combined with high density polyethylene(HDPE) in melt blending process, and polyacrylonitrile fibre is evenly distributed in high density polyethylene(HDPE), interfacial bonding property is good. Therefore preparation method's raw material that this invention provides is simple, cheap, easy and simple to handle, and technique is simple, has good industrial prospect.
3, obtained PAN/HDPE matrix material tensile strength can reach 21��35MPa, shock strength is 260��370J/m, flexural strength is 35��65MPa, and modulus in flexure is 1200��1800MPa, and over-all properties is good.
Embodiment
Embodiment one: polyacrylonitrile fibre/high density polyethylene(HDPE) (PAN/HDPE) matrix material of present embodiment, by mass percentage, it is that the high density polyethylene(HDPE) by 70%��97%, the polyacrylonitrile fibre of 1%��20%, the ��-aminopropyl triethoxysilane coupling agent (KH-550) of 0.1%��10% and 0.1%��2% antioxidant 1010 are made; Wherein said polyacrylonitrile fibre length is 1��12mm.
Present embodiment comprises following useful effect:
1, the PAN/HDPE matrix material of present embodiment has the advantages such as easy-formation processing, good mechanical property, stable performance, suitability be strong, cheap, can be used as the materials such as daily necessities, tubing, automobile, electric wire, exterior material.
2, the polyacrylonitrile fibre in raw material is as organic filler, before adding high density polyethylene(HDPE), not needing surface modification just can be combined with high density polyethylene(HDPE) in melt blending process, and polyacrylonitrile fibre is evenly distributed in high density polyethylene(HDPE), interfacial bonding property is good.
3, obtained PAN/HDPE matrix material tensile strength can reach 21��35MPa, shock strength is 260��370J/m, flexural strength is 35��65MPa, and modulus in flexure is 1200��1800MPa, and over-all properties is good.
Embodiment two: present embodiment and embodiment one the difference is that: it is described that by mass percentage, it is that the high density polyethylene(HDPE) by 78%��97%, the polyacrylonitrile fibre of 2%��18%, the ��-aminopropyl triethoxysilane coupling agent of 0.3%��10% and 0.1%��2% antioxidant 1010 are made. Other is identical with embodiment one.
Embodiment three: present embodiment and embodiment one or two the difference is that: it is described that by mass percentage, it is that the high density polyethylene(HDPE) by 80%��95%, the polyacrylonitrile fibre of 3%��15%, the ��-aminopropyl triethoxysilane coupling agent of 1%��10% and 0.3%��2% antioxidant 1010 are made. Other is identical with embodiment one or two.
Embodiment four: one of present embodiment and embodiment one to three the difference is that: it is described that by mass percentage, it is that the high density polyethylene(HDPE) by 85%��92%, the polyacrylonitrile fibre of 5%��12%, the ��-aminopropyl triethoxysilane coupling agent of 3%��10% and 0.5%��2% antioxidant 1010 are made. One of other and embodiment one to three are identical.
Embodiment five: one of present embodiment and embodiment one to four the difference is that: it is described that by mass percentage, it is that the high density polyethylene(HDPE) by 89%��92%, the polyacrylonitrile fibre of 8%��10%, the ��-aminopropyl triethoxysilane coupling agent of 5%��8% and 1%��2% antioxidant 1010 are made. One of other and embodiment one to four are identical.
Embodiment six: one of present embodiment and embodiment one to five the difference is that: described by mass percentage it be the high density polyethylene(HDPE) by 92%, 5% length be that the polyacrylonitrile fibre of 3mm, the ��-aminopropyl triethoxysilane coupling agent of 3% and 0.1% antioxidant 1010 are made. One of other and embodiment one to five are identical.
Embodiment seven: one of present embodiment and embodiment one to six the difference is that: described by mass percentage it be the high density polyethylene(HDPE) by 85%, 10% length be that the polyacrylonitrile fibre of 3mm, the ��-aminopropyl triethoxysilane coupling agent of 5% and 0.1% antioxidant 1010 are made. One of other and embodiment one to six are identical.
Embodiment eight: one of present embodiment and embodiment one to seven the difference is that: described by mass percentage it be the high density polyethylene(HDPE) by 80%, 8% length be that the polyacrylonitrile fibre of 9mm, the ��-aminopropyl triethoxysilane coupling agent of 10% and 0.1% antioxidant 1010 are made. One of other and embodiment one to seven are identical.
Embodiment nine: polyacrylonitrile fibre/high density polyethylene(HDPE) (PAN/HDPE) matrix material of present embodiment, by mass percentage, it is that the high density polyethylene(HDPE) by 70%��97%, the polyacrylonitrile fibre of 1%��20%, the ��-aminopropyl triethoxysilane coupling agent (KH-550) of 0.1%��10% and 0.1%��2% antioxidant 1010 are made; Wherein said polyacrylonitrile fibre length is 1��12mm.
Present embodiment comprises following useful effect:
1, the PAN/HDPE matrix material of present embodiment has the advantages such as easy-formation processing, good mechanical property, stable performance, suitability be strong, cheap, can be used as the materials such as daily necessities, tubing, automobile, electric wire, exterior material.
2, the polyacrylonitrile fibre in raw material is as organic filler, before adding high density polyethylene(HDPE), not needing surface modification just can be combined with high density polyethylene(HDPE) in melt blending process, and polyacrylonitrile fibre is evenly distributed in high density polyethylene(HDPE), interfacial bonding property is good.
3, obtained PAN/HDPE matrix material tensile strength can reach 21��35MPa, shock strength is 260��370J/m, flexural strength is 35��65MPa, and modulus in flexure is 1200��1800MPa, and over-all properties is good.
Embodiment ten: present embodiment and embodiment nine the difference is that: described by mass percentage it be the high density polyethylene(HDPE) by 78%��97%, 2%��18% polyacrylonitrile fibre and 0.1%��2% antioxidant 1010 make. Other is identical with embodiment nine.
Embodiment 11: present embodiment and embodiment nine or ten the difference is that: described by mass percentage it be the high density polyethylene(HDPE) by 80%��95%, 3%��15% polyacrylonitrile fibre and 0.3%��2% antioxidant 1010 make. Other is identical with embodiment nine or ten.
Embodiment 12: one of present embodiment and embodiment nine to ten one the difference is that: described by mass percentage it be the high density polyethylene(HDPE) by 85%��92%, 5%��12% polyacrylonitrile fibre and 0.5%��2% antioxidant 1010 make. One of other and embodiment nine to ten one are identical.
Embodiment 13: one of present embodiment and embodiment nine to ten two the difference is that: described by mass percentage it be the high density polyethylene(HDPE) by 89%��92%, 8%��10% polyacrylonitrile fibre and 1%��2% antioxidant 1010 make. One of other and embodiment nine to ten two are identical.
Embodiment 14: one of present embodiment and embodiment nine to ten three the difference is that: described by mass percentage it be the high density polyethylene(HDPE) by 85%, 15% length be that the polyacrylonitrile fibre of 6mm and 0.1% antioxidant 1010 are made. One of other and embodiment nine to ten three are identical.
Embodiment 15: one of present embodiment and embodiment nine to ten four the difference is that: described by mass percentage it be the high density polyethylene(HDPE) by 78%, 20% length be that the polyacrylonitrile fibre of 9mm and 2% antioxidant 1010 are made. One of other and embodiment nine to ten four are identical.
Embodiment 16: one of present embodiment and embodiment nine to ten five the difference is that: described by mass percentage it be the high density polyethylene(HDPE) by 97%, 3% length be that the polyacrylonitrile fibre of 3mm and 0.1% antioxidant 1010 are made. One of other and embodiment nine to ten five are identical.
Embodiment 17: one of present embodiment and embodiment one to ten six the difference is that: the length of described polyacrylonitrile fibre is 2��10mm. One of other and embodiment one to ten six are identical.
Embodiment 18: one of present embodiment and embodiment one to ten seven the difference is that: the length of described polyacrylonitrile fibre is 3��9mm. One of other and embodiment one to ten seven are identical.
Embodiment 19: one of present embodiment and embodiment one to ten eight the difference is that: the length of described polyacrylonitrile fibre is 4��8mm. One of other and embodiment one to ten eight are identical.
Embodiment 20: one of present embodiment and embodiment one to ten nine the difference is that: the length of described polyacrylonitrile fibre is 5��7mm. One of other and embodiment one to ten nine are identical.
Embodiment 21: one of present embodiment and embodiment one to two ten the difference is that: the length of described polyacrylonitrile fibre is 6mm. One of other and embodiment one to two ten are identical.
Embodiment 21: the preparation method of the polyacrylonitrile fibre/high-density polyethylene composite material of present embodiment, it carries out according to following step:
One, take the high density polyethylene(HDPE) of 70%��97% by mass percentage, the polyacrylonitrile fibre of 1%��20%, the ��-aminopropyl triethoxysilane coupling agent of 0.1%��10% and 0.1%��2% antioxidant 1010 make; Wherein said polyacrylonitrile fibre length is 1��12mm;
Two, high density polyethylene(HDPE) is put into electric heating constant-temperature blowing drying box, dry when temperature is 50 DEG C��70 DEG C, obtain dry high density polyethylene(HDPE); Polyacrylonitrile fibre being put into electric heating constant-temperature blowing drying box and carries out preoxidation, Pre oxidation is 120 DEG C��160 DEG C, and preoxidation time is 1h��4h, obtains the polyacrylonitrile fibre of preoxidation;
Three, by the high density polyethylene(HDPE) of step one drying, ��-aminopropyl triethoxysilane coupling agent and antioxidant 1010 in low speed mixer, mix when rotating speed is 5.0��20.0r/min;
Four, it it is 150 DEG C��200 DEG C in twin-screw extrusion temperature, temperature in injection moulding machine is 190 DEG C��205 DEG C, feeding machine rotating speed on twin screw extruder is 70��100r/min, when screw speed is 20��40r/min, mixed for step 2 raw material is joined twin screw extruder from the spout of twin screw extruder, the polyacrylonitrile fibre of the preoxidation of step one is joined after twin screw extruder above the runner mouth in twin screw extruder spout front, from twin-screw extrusion, by the matrix material extruded through cold cut machine pelletizing, shaping by injection moulding machine again, namely described polyacrylonitrile fibre/high-density polyethylene composite material is obtained.
Present embodiment comprises following useful effect:
1, the PAN/HDPE matrix material of present embodiment has the advantages such as easy-formation processing, good mechanical property, stable performance, suitability be strong, cheap, can be used as the materials such as daily necessities, tubing, automobile, electric wire, exterior material.
2, the polyacrylonitrile fibre in raw material is as organic filler, before adding high density polyethylene(HDPE), not needing surface modification just can be combined with high density polyethylene(HDPE) in melt blending process, and polyacrylonitrile fibre is evenly distributed in high density polyethylene(HDPE), interfacial bonding property is good. Therefore preparation method's raw material that present embodiment provides is simple, cheap, easy and simple to handle, and technique is simple, has good industrial prospect.
3, obtained PAN/HDPE matrix material tensile strength can reach 21��35MPa, shock strength is 260��370J/m, flexural strength is 35��65MPa, and modulus in flexure is 1200��1800MPa, and over-all properties is good.
Embodiment 22: present embodiment and embodiment 21 the difference is that: by mass percentage take 78%��97% high density polyethylene(HDPE), the polyacrylonitrile fibre of 2%��18%, the ��-aminopropyl triethoxysilane coupling agent of 0.3%��10% and 0.1%��2% antioxidant 1010. Other is identical with embodiment 21.
Embodiment 23: present embodiment and embodiment 21 or 22 the difference is that: by mass percentage take 80%��95% high density polyethylene(HDPE), the polyacrylonitrile fibre of 3%��15%, the ��-aminopropyl triethoxysilane coupling agent of 1%��10% and 0.3%��2% antioxidant 1010. Other is identical with embodiment 21 or 22.
Embodiment 24: one of present embodiment and embodiment 20 one to two 13 the difference is that: it is described that by mass percentage, it is that the high density polyethylene(HDPE) by 85%��92%, the polyacrylonitrile fibre of 5%��12%, the ��-aminopropyl triethoxysilane coupling agent of 3%��10% and 0.5%��2% antioxidant 1010 are made. One of other and embodiment 20 one to two 13 is identical.
Embodiment 25: one of present embodiment and embodiment 20 one to two 14 the difference is that: by mass percentage take 89%��92% high density polyethylene(HDPE), the polyacrylonitrile fibre of 8%��10%, the ��-aminopropyl triethoxysilane coupling agent of 5%��8% and 1%��2% antioxidant 1010. One of other and embodiment 20 one to two 14 is identical.
Embodiment 26: one of present embodiment and embodiment 20 one to two 15 the difference is that: take the high density polyethylene(HDPE) of 92% by mass percentage, the length of 5% is the polyacrylonitrile fibre of 3mm, the ��-aminopropyl triethoxysilane coupling agent of 3% and 0.1% antioxidant 1010. One of other and embodiment 20 one to two 15 is identical.
Embodiment 27: one of present embodiment and embodiment 20 one to two 16 the difference is that: take the high density polyethylene(HDPE) of 85% by mass percentage, the length of 10% is the polyacrylonitrile fibre of 3mm, the ��-aminopropyl triethoxysilane coupling agent of 5% and 0.1% antioxidant 1010. One of other and embodiment 20 one to two 16 is identical.
Embodiment 28: one of present embodiment and embodiment 20 one to two 17 the difference is that: take the high density polyethylene(HDPE) of 80% by mass percentage, the length of 8% is the polyacrylonitrile fibre of 9mm, the ��-aminopropyl triethoxysilane coupling agent of 10% and 0.1% antioxidant 1010. One of other and embodiment 20 one to two 17 is identical.
Embodiment 29: one of present embodiment and embodiment 20 one to two 18 the difference is that: the bake out temperature of step one medium high density polyethylene is 60 DEG C, and Pre oxidation is 130��150 DEG C. One of other and embodiment 20 one to two 18 is identical.
Embodiment 30: one of present embodiment and embodiment 20 one to two 19 the difference is that: the bake out temperature of step one medium high density polyethylene is 60 DEG C, and Pre oxidation is 140 DEG C. One of other and embodiment 20 one to two 19 is identical.
Embodiment 31: one of present embodiment and embodiment 20 one to three ten the difference is that: in step 3, twin-screw extrusion temperature is 160��210 DEG C, and the temperature in injection moulding machine is 180 DEG C��200 DEG C. One of other and embodiment 20 one to three ten are identical.
Embodiment 32: one of present embodiment and embodiment 20 one to three 11 the difference is that: in step 3, twin-screw extrusion temperature is 180��200 DEG C, and the temperature in injection moulding machine is 190 DEG C��200 DEG C. One of other and embodiment 20 one to three 11 is identical.
Embodiment 33: one of present embodiment and embodiment 20 one to three 12 the difference is that: in step 3, twin-screw extrusion temperature is 190 DEG C, and the temperature in injection moulding machine is 195 DEG C. One of other and embodiment 20 one to three 12 is identical.
Embodiment 34: one of present embodiment and embodiment 20 one to three 13 the difference is that: in step 3, the feeding machine rotating speed on twin screw extruder is 80��100r/min, and screw speed is 30��40r/min. One of other and embodiment 20 one to three 13 is identical.
Embodiment 35: one of present embodiment and embodiment 20 one to three 14 the difference is that: in step 3, the feeding machine rotating speed on twin screw extruder is 90r/min, and screw speed is 35r/min. One of other and embodiment 20 one to three 14 is identical.
Embodiment 35: the preparation method of the polyacrylonitrile fibre/high-density polyethylene composite material of present embodiment, it carries out according to following step:
One, take the high density polyethylene(HDPE) of 70%��97%, the polyacrylonitrile fibre of 1%��20% and 0.1%��2% antioxidant 1010 by mass percentage to make; Wherein said polyacrylonitrile fibre length is 1��12mm;
Two, high density polyethylene(HDPE) is put into electric heating constant-temperature blowing drying box, dry when temperature is 50 DEG C��70 DEG C, obtain dry high density polyethylene(HDPE); Polyacrylonitrile fibre being put into electric heating constant-temperature blowing drying box and carries out preoxidation, Pre oxidation is 120 DEG C��160 DEG C, and preoxidation time is 1h��4h, obtains the polyacrylonitrile fibre of preoxidation;
Three, by the high density polyethylene(HDPE) of step one drying, ��-aminopropyl triethoxysilane coupling agent and antioxidant 1010 in low speed mixer, mix when rotating speed is 5.0��20.0r/min;
Four, it it is 150 DEG C��200 DEG C in twin-screw extrusion temperature, temperature in injection moulding machine is 190 DEG C��205 DEG C, feeding machine rotating speed on twin screw extruder is 70��100r/min, when screw speed is 20��40r/min, mixed for step 3 raw material is joined twin screw extruder from the spout of twin screw extruder, the polyacrylonitrile fibre of the preoxidation of step 2 is joined after twin screw extruder above the runner mouth in twin screw extruder spout front with the speed of 0.6g/min��1.2g/min, from twin-screw extrusion, by the matrix material extruded through cold cut machine pelletizing, shaping by injection moulding machine again, namely described polyacrylonitrile fibre/high-density polyethylene composite material is obtained.
Present embodiment comprises following useful effect:
1, the PAN/HDPE matrix material of present embodiment has the advantages such as easy-formation processing, good mechanical property, stable performance, suitability be strong, cheap, can be used as the materials such as daily necessities, tubing, automobile, electric wire, exterior material.
2, the polyacrylonitrile fibre in raw material is as organic filler, before adding high density polyethylene(HDPE), not needing surface modification just can be combined with high density polyethylene(HDPE) in melt blending process, and polyacrylonitrile fibre is evenly distributed in high density polyethylene(HDPE), interfacial bonding property is good. Therefore preparation method's raw material that present embodiment provides is simple, cheap, easy and simple to handle, and technique is simple, has good industrial prospect.
3, obtained PAN/HDPE matrix material tensile strength can reach 21��35MPa, shock strength is 260��370J/m, flexural strength is 35��65MPa, and modulus in flexure is 1200��1800MPa, and over-all properties is good.
Embodiment 36: present embodiment and embodiment 35 the difference is that: take the high density polyethylene(HDPE) of 78%��97%, the polyacrylonitrile fibre of 2%��18% and 0.1%��2% antioxidant 1010 by mass percentage. Other is identical with embodiment 35.
Embodiment 37: present embodiment and embodiment 35 or 36 the difference is that: take the high density polyethylene(HDPE) of 80%��95%, the polyacrylonitrile fibre of 3%��15% and 0.3%��2% antioxidant 1010 by mass percentage. Other is identical with embodiment 35 or 36.
Embodiment 38: one of present embodiment and embodiment 30 five to three 17 the difference is that: take the high density polyethylene(HDPE) of 85%��92%, the polyacrylonitrile fibre of 5%��12% and 0.5%��2% antioxidant 1010 by mass percentage. One of other and embodiment 30 five to three 17 is identical.
Embodiment 39: one of present embodiment and embodiment 30 five to three 18 the difference is that: take the high density polyethylene(HDPE) of 89%��92%, the polyacrylonitrile fibre of 8%��10% and 1%��2% antioxidant 1010 by mass percentage. One of other and embodiment 30 five to three 18 is identical.
Embodiment 40: one of present embodiment and embodiment 30 five to three 19 the difference is that: take the high density polyethylene(HDPE) of 89% by mass percentage, polyacrylonitrile fibre and 0.1% antioxidant 1010 that the length of 15% is 6mm. One of other and embodiment 30 five to three 19 is identical.
Embodiment 41: one of present embodiment and embodiment 30 five to four ten the difference is that: take the high density polyethylene(HDPE) of 78% by mass percentage, polyacrylonitrile fibre and 2% antioxidant 1010 that the length of 20% is 9mm. One of other and embodiment 30 five to four ten are identical.
Embodiment 42: one of present embodiment and embodiment 30 five to four 11 the difference is that: take the high density polyethylene(HDPE) of 97% by mass percentage, polyacrylonitrile fibre and 0.1% antioxidant 1010 that the length of 3% is 3mm. One of other and embodiment 30 five to four 11 is identical.
Embodiment 43: one of present embodiment and embodiment 30 five to four 12 the difference is that: the length of described polyacrylonitrile fibre is 2��10mm. One of other and embodiment 30 five to four 12 is identical.
Embodiment 44: one of present embodiment and embodiment 20 one to four 13 the difference is that: the length of described polyacrylonitrile fibre is 3��9mm. One of other and embodiment 20 one to four 13 is identical.
Embodiment 45: one of present embodiment and embodiment 20 one to four 14 the difference is that: the length of described polyacrylonitrile fibre is 4��8mm. One of other and embodiment 20 one to four 14 is identical.
Embodiment 46: one of present embodiment and embodiment 20 one to four 15 the difference is that: the length of described polyacrylonitrile fibre is 5��7mm. One of other and embodiment 20 one to four 15 is identical.
Embodiment 47: one of present embodiment and embodiment 20 one to four 16 the difference is that: the length of described polyacrylonitrile fibre is 6mm. One of other and embodiment 20 one to four 16 is identical.
Embodiment 48: one of present embodiment and embodiment 30 five to four 17 the difference is that: the bake out temperature of step one medium high density polyethylene is 60 DEG C, and Pre oxidation is 130��150 DEG C. One of other and embodiment 30 five to four 17 is identical.
Embodiment 49: one of present embodiment and embodiment 30 five to four 18 the difference is that: the bake out temperature of step one medium high density polyethylene is 60 DEG C, and Pre oxidation is 140 DEG C. One of other and embodiment 30 five to four 18 is identical.
Embodiment 50: one of present embodiment and embodiment 30 five to four 19 the difference is that: in step 3, twin-screw extrusion temperature is 160��210 DEG C, and the temperature in injection moulding machine is 180 DEG C��200 DEG C. One of other and embodiment 30 five to four 19 is identical.
Embodiment 51: one of present embodiment and embodiment 30 five to five ten the difference is that: in step 3, twin-screw extrusion temperature is 180��200 DEG C, and the temperature in injection moulding machine is 190 DEG C��200 DEG C. One of other and embodiment 30 five to five ten are identical.
Embodiment 52: one of present embodiment and embodiment 30 five to five 11 the difference is that: in step 3, twin-screw extrusion temperature is 190 DEG C, and the temperature in injection moulding machine is 195 DEG C. One of other and embodiment 30 five to five 11 is identical.
Embodiment 53: one of present embodiment and embodiment 30 five to five 12 the difference is that: in step 3, the feeding machine rotating speed on twin screw extruder is 80��100r/min, and screw speed is 30��40r/min. One of other and embodiment 30 five to five 12 is identical.
Embodiment 54: one of present embodiment and embodiment 30 five to five 13 the difference is that: in step 3, the feeding machine rotating speed on twin screw extruder is 90r/min, and screw speed is 35r/min. One of other and embodiment 30 five to five 13 is identical.
The useful effect of the present invention is verified by following examples:
Embodiment 1
The preparation method of the polyacrylonitrile fibre/high-density polyethylene composite material of the present embodiment, it carries out according to following step:
One, take the high density polyethylene(HDPE) of 98% by mass percentage, the polyacrylonitrile fibre of 1%, the ��-aminopropyl triethoxysilane coupling agent of 0.9% and 0.1% antioxidant 1010 make; Wherein said polyacrylonitrile fibre length is 3mm;
Two, high density polyethylene(HDPE) is put into electric heating constant-temperature blowing drying box, dry when temperature is 60 DEG C, obtain dry high density polyethylene(HDPE); Polyacrylonitrile fibre being put into electric heating constant-temperature blowing drying box and carries out preoxidation, Pre oxidation is 140 DEG C, and preoxidation time is 3h, obtains the polyacrylonitrile fibre of preoxidation;
Three, by the high density polyethylene(HDPE) of step 2 drying, ��-aminopropyl triethoxysilane coupling agent and antioxidant 1010 in low speed mixer, mix when rotating speed is 10r/min;
Four, twin screw extruder each section of temperature (by hopper to head) is respectively 150, 160, 170, 180, 190, 200 DEG C, injection moulding machine each section of temperature (by hopper to nozzle) is respectively 190, 195, 200, 205 DEG C, feeding machine rotating speed on twin screw extruder is 80r/min, when screw speed is 30r/min, mixed for step 3 raw material is joined twin screw extruder from the spout of twin screw extruder, the polyacrylonitrile fibre of step 2 preoxidation is joined after twin screw extruder above the runner mouth in twin screw extruder spout front with the speed of 0.6g/min, carry out from twin-screw extrusion, by the matrix material extruded through cold cut machine pelletizing, shaping by injection moulding machine again, namely described polyacrylonitrile fibre/high-density polyethylene composite material is obtained.
Embodiment 2
The preparation method of the polyacrylonitrile fibre/high-density polyethylene composite material of the present embodiment, it carries out according to following step:
One, take the high density polyethylene(HDPE) of 92% by mass percentage, the polyacrylonitrile fibre of 5%, the ��-aminopropyl triethoxysilane coupling agent of 2% and 1% antioxidant 1010 make; Wherein said polyacrylonitrile fibre length is 3mm;
Two, high density polyethylene(HDPE) is put into electric heating constant-temperature blowing drying box, dry when temperature is 60 DEG C, obtain dry high density polyethylene(HDPE); Polyacrylonitrile fibre being put into electric heating constant-temperature blowing drying box and carries out preoxidation, Pre oxidation is 150 DEG C, and preoxidation time is 2h, obtains the polyacrylonitrile fibre of preoxidation;
Three, by the high density polyethylene(HDPE) of step 2 drying, ��-aminopropyl triethoxysilane coupling agent and antioxidant 1010 in low speed mixer, mix when rotating speed is 15r/min;
Four, twin screw extruder each section of temperature (by hopper to head) is respectively 150, 160, 170, 180, 190, 200 DEG C, injection moulding machine each section of temperature (by hopper to nozzle) is respectively 190, 195, 200, 205 DEG C, feeding machine rotating speed on twin screw extruder is 80r/min, when screw speed is 20r/min, mixed for step 3 raw material is joined twin screw extruder from the spout of twin screw extruder, the polyacrylonitrile fibre of the preoxidation of step 2 is joined after twin screw extruder above the runner mouth in twin screw extruder spout front with the speed of 3g/min, carry out from twin-screw extrusion, by the matrix material extruded through cold cut machine pelletizing, shaping by injection moulding machine again, namely described polyacrylonitrile fibre/high-density polyethylene composite material is obtained.
Embodiment 3
The preparation method of the polyacrylonitrile fibre/high-density polyethylene composite material of the present embodiment, it carries out according to following step:
One, take the high density polyethylene(HDPE) of 85% by mass percentage, the polyacrylonitrile fibre of 8%, the ��-aminopropyl triethoxysilane coupling agent of 5% and 2% antioxidant 1010 make; Wherein said polyacrylonitrile fibre length is 6mm;
Two, high density polyethylene(HDPE) is put into electric heating constant-temperature blowing drying box, dry when temperature is 60 DEG C, obtain dry high density polyethylene(HDPE); Polyacrylonitrile fibre being put into electric heating constant-temperature blowing drying box and carries out preoxidation, Pre oxidation is 150 DEG C, and preoxidation time is 3h, obtains the polyacrylonitrile fibre of preoxidation;
Three, by the high density polyethylene(HDPE) of step 2 drying, ��-aminopropyl triethoxysilane coupling agent and antioxidant 1010 in low speed mixer, mix when rotating speed is 15r/min;
Four, twin screw extruder each section of temperature (by hopper to head) is respectively 150, 160, 170, 180, 190, 200 DEG C, injection moulding machine each section of temperature (by hopper to nozzle) is respectively 190, 195, 200, 205 DEG C, feeding machine rotating speed on twin screw extruder is 80r/min, when screw speed is 30r/min, mixed for step 3 raw material is joined twin screw extruder from the spout of twin screw extruder, the polyacrylonitrile fibre of the preoxidation of step 2 is joined after twin screw extruder above the runner mouth in twin screw extruder spout front with the speed of 5g/min, carry out from twin-screw extrusion, by the matrix material extruded through cold cut machine pelletizing, shaping by injection moulding machine again, namely described polyacrylonitrile fibre/high-density polyethylene composite material is obtained.
Embodiment 4
The preparation method of the polyacrylonitrile fibre/high-density polyethylene composite material of the present embodiment, it carries out according to following step:
One, take the high density polyethylene(HDPE) of 85% by mass percentage, the polyacrylonitrile fibre of 10%, the ��-aminopropyl triethoxysilane coupling agent of 4% and 1% antioxidant 1010 make; Wherein said polyacrylonitrile fibre length is 6mm;
Two, high density polyethylene(HDPE) is put into electric heating constant-temperature blowing drying box, dry when temperature is 60 DEG C, obtain dry high density polyethylene(HDPE); Polyacrylonitrile fibre being put into electric heating constant-temperature blowing drying box and carries out preoxidation, Pre oxidation is 150 DEG C, and preoxidation time is 4h, obtains the polyacrylonitrile fibre of preoxidation;
Three, by the high density polyethylene(HDPE) of step 2 drying, ��-aminopropyl triethoxysilane coupling agent and antioxidant 1010 in low speed mixer, mix when rotating speed is 18r/min;
Four, twin screw extruder each section of temperature (by hopper to head) is respectively 150, 160, 170, 180, 190, 200 DEG C, injection moulding machine each section of temperature (by hopper to nozzle) is respectively 190, 195, 200, 205 DEG C, feeding machine rotating speed on twin screw extruder is 70r/min, when screw speed is 20r/min, mixed for step 3 raw material is joined twin screw extruder from the spout of twin screw extruder, the polyacrylonitrile fibre of the preoxidation of step 2 is joined after twin screw extruder above the runner mouth in twin screw extruder spout front with the speed of 6g/min, carry out from twin-screw extrusion, by the matrix material extruded through cold cut machine pelletizing, shaping by injection moulding machine again, namely described polyacrylonitrile fibre/high-density polyethylene composite material is obtained.
The scanning electron microscope (SEM) photograph of polyacrylonitrile fibre/high-density polyethylene composite material that the present embodiment is obtained is as shown in Figure 1.
Embodiment 5
The preparation method of the polyacrylonitrile fibre/high-density polyethylene composite material of the present embodiment, it carries out according to following step:
One, take the high density polyethylene(HDPE) of 87% by mass percentage, the polyacrylonitrile fibre of 10%, the ��-aminopropyl triethoxysilane coupling agent of 2.9% and 0.1% antioxidant 1010 make; Wherein said polyacrylonitrile fibre length is 9mm;
Two, high density polyethylene(HDPE) is put into electric heating constant-temperature blowing drying box, dry when temperature is 60 DEG C, obtain dry high density polyethylene(HDPE); Polyacrylonitrile fibre being put into electric heating constant-temperature blowing drying box and carries out preoxidation, Pre oxidation is 130 DEG C, and preoxidation time is 4h, obtains the polyacrylonitrile fibre of preoxidation;
Three, by the high density polyethylene(HDPE) of step 2 drying, ��-aminopropyl triethoxysilane coupling agent and antioxidant 1010 in low speed mixer, mix when rotating speed is 12r/min;
Four, twin screw extruder each section of temperature (by hopper to head) is respectively 150, 160, 170, 180, 190, 200 DEG C, injection moulding machine each section of temperature (by hopper to nozzle) is respectively 190, 195, 200, 205 DEG C, feeding machine rotating speed on twin screw extruder is 90r/min, when screw speed is 30r/min, mixed for step 3 raw material is joined twin screw extruder from the spout of twin screw extruder, the polyacrylonitrile fibre of the preoxidation of step 2 is joined after twin screw extruder above the runner mouth in twin screw extruder spout front with the speed of 6g/min, carry out from twin-screw extrusion, by the matrix material extruded through cold cut machine pelletizing, shaping by injection moulding machine again, namely described polyacrylonitrile fibre/high-density polyethylene composite material is obtained.
Embodiment 6
The preparation method of the polyacrylonitrile fibre/high-density polyethylene composite material of the present embodiment, it carries out according to following step:
One, take the high density polyethylene(HDPE) of 78% by mass percentage, the polyacrylonitrile fibre of 20%, the ��-aminopropyl triethoxysilane coupling agent of 1% and 1% antioxidant 1010 make; Wherein said polyacrylonitrile fibre length is 9mm;
Two, high density polyethylene(HDPE) is put into electric heating constant-temperature blowing drying box, dry when temperature is 60 DEG C, obtain dry high density polyethylene(HDPE); Polyacrylonitrile fibre being put into electric heating constant-temperature blowing drying box and carries out preoxidation, Pre oxidation is 140 DEG C, and preoxidation time is 2h, obtains the polyacrylonitrile fibre of preoxidation;
Three, by the high density polyethylene(HDPE) of step 2 drying, ��-aminopropyl triethoxysilane coupling agent and antioxidant 1010 in low speed mixer, mix when rotating speed is 15r/min;
Four, twin screw extruder each section of temperature (by hopper to head) is respectively 150, 160, 170, 180, 190, 200 DEG C, injection moulding machine each section of temperature (by hopper to nozzle) is respectively 190, 195, 200, 205 DEG C, feeding machine rotating speed on twin screw extruder is 80r/min, when screw speed is 40r/min, , mixed for step 3 raw material is joined twin screw extruder from the spout of twin screw extruder, the polyacrylonitrile fibre of the preoxidation of step 2 is joined after twin screw extruder above the runner mouth in twin screw extruder spout front with the speed of 12g/min, carry out from twin-screw extrusion, by the matrix material extruded through cold cut machine pelletizing, shaping by injection moulding machine again, namely described polyacrylonitrile fibre/high-density polyethylene composite material is obtained.
Embodiment 7
The preparation method of the polyacrylonitrile fibre/high-density polyethylene composite material of the present embodiment, it carries out according to following step:
One, take the high density polyethylene(HDPE) of 83%, the polyacrylonitrile fibre of 15% and 2% antioxidant 1010 by mass percentage to make; Wherein said polyacrylonitrile fibre length is 6mm;
Two, high density polyethylene(HDPE) is put into electric heating constant-temperature blowing drying box, dry when temperature is 60 DEG C, obtain dry high density polyethylene(HDPE); Polyacrylonitrile fibre being put into electric heating constant-temperature blowing drying box and carries out preoxidation, Pre oxidation is 150 DEG C, and preoxidation time is 2h, obtains the polyacrylonitrile fibre of preoxidation;
Three, by the high density polyethylene(HDPE) of step 2 drying, ��-aminopropyl triethoxysilane coupling agent and antioxidant 1010 in low speed mixer, mix when rotating speed is 15r/min;
Four, twin screw extruder each section of temperature (by hopper to head) is respectively 150, 160, 170, 180, 190, 200 DEG C, injection moulding machine each section of temperature (by hopper to nozzle) is respectively 190, 195, 200, 205 DEG C, feeding machine rotating speed on twin screw extruder is 80r/min, screw speed be 20r/min when, mixed for step 3 raw material is joined twin screw extruder from the spout of twin screw extruder, the polyacrylonitrile fibre of the preoxidation of step 2 is joined after twin screw extruder above the runner mouth in twin screw extruder spout front with the speed of 9g/min, carry out from twin-screw extrusion, by the matrix material extruded through cold cut machine pelletizing, shaping by injection moulding machine again, namely described polyacrylonitrile fibre/high-density polyethylene composite material is obtained.
The scanning electron microscope (SEM) photograph of polyacrylonitrile fibre/high-density polyethylene composite material that the present embodiment is obtained is as shown in Figure 2.
Embodiment 8
The preparation method of the polyacrylonitrile fibre/high-density polyethylene composite material of the present embodiment, it carries out according to following step:
One, take the high density polyethylene(HDPE) of 89%, the polyacrylonitrile fibre of 9% and 2% antioxidant 1010 by mass percentage to make; Wherein said polyacrylonitrile fibre length is 3mm;
Two, high density polyethylene(HDPE) is put into electric heating constant-temperature blowing drying box, dry when temperature is 60 DEG C, obtain dry high density polyethylene(HDPE); Polyacrylonitrile fibre being put into electric heating constant-temperature blowing drying box and carries out preoxidation, Pre oxidation is 160 DEG C, and preoxidation time is 3h, obtains the polyacrylonitrile fibre of preoxidation;
Three, by the high density polyethylene(HDPE) of step 2 drying, ��-aminopropyl triethoxysilane coupling agent and antioxidant 1010 in low speed mixer, mix when rotating speed is 12r/min;
Four, twin screw extruder each section of temperature (by hopper to head) is respectively 150, 160, 170, 180, 190, 200 DEG C, injection moulding machine each section of temperature (by hopper to nozzle) is respectively 190, 195, 200, 205 DEG C, feeding machine rotating speed on twin screw extruder is 70r/min, screw speed be 40r/min when, mixed for step 3 raw material is joined twin screw extruder from the spout of twin screw extruder, the polyacrylonitrile fibre of the preoxidation of step 2 is joined after twin screw extruder above the runner mouth in twin screw extruder spout front with the speed of about 6g/min, carry out from twin-screw extrusion, by the matrix material extruded through cold cut machine pelletizing, shaping by injection moulding machine again, namely described polyacrylonitrile fibre/high-density polyethylene composite material is obtained.
Embodiment 9
The preparation method of the polyacrylonitrile fibre/high-density polyethylene composite material of the present embodiment, it carries out according to following step:
One, take the high density polyethylene(HDPE) of 90%, the polyacrylonitrile fibre of 8% and 2% antioxidant 1010 by mass percentage to make; Wherein said polyacrylonitrile fibre length is 1mm;
Two, high density polyethylene(HDPE) is put into electric heating constant-temperature blowing drying box, dry when temperature is 60 DEG C, obtain dry high density polyethylene(HDPE); Polyacrylonitrile fibre being put into electric heating constant-temperature blowing drying box and carries out preoxidation, Pre oxidation is 160 DEG C, and preoxidation time is 1h, obtains the polyacrylonitrile fibre of preoxidation;
Three, by the high density polyethylene(HDPE) of step 2 drying, ��-aminopropyl triethoxysilane coupling agent and antioxidant 1010 in low speed mixer, mix when rotating speed is 20r/min;
Four, twin screw extruder each section of temperature (by hopper to head) is respectively 150, 160, 170, 180, 190, 200 DEG C, injection moulding machine each section of temperature (by hopper to nozzle) is respectively 190, 195, 200, 205 DEG C, feeding machine rotating speed on twin screw extruder is 80r/min, when screw speed is 40r/min, mixed for step 3 raw material is joined twin screw extruder from the spout of twin screw extruder, the polyacrylonitrile fibre of the preoxidation of step 2 is joined after twin screw extruder above the runner mouth in twin screw extruder spout front with the speed of 5g/min, carry out from twin-screw extrusion, by the matrix material extruded through cold cut machine pelletizing, shaping by injection moulding machine again, namely described polyacrylonitrile fibre/high-density polyethylene composite material is obtained.
Embodiment 10
The preparation method of the polyacrylonitrile fibre/high-density polyethylene composite material of the present embodiment, it carries out according to following step:
One, take the high density polyethylene(HDPE) of 94%, the polyacrylonitrile fibre of 5% and 1% antioxidant 1010 by mass percentage to make; Wherein said polyacrylonitrile fibre length is 12mm;
Two, high density polyethylene(HDPE) is put into electric heating constant-temperature blowing drying box, dry when temperature is 60 DEG C, obtain dry high density polyethylene(HDPE); Polyacrylonitrile fibre being put into electric heating constant-temperature blowing drying box and carries out preoxidation, Pre oxidation is 150 DEG C, and preoxidation time is 3h, obtains the polyacrylonitrile fibre of preoxidation;
Three, by the high density polyethylene(HDPE) of step 2 drying, ��-aminopropyl triethoxysilane coupling agent and antioxidant 1010 in low speed mixer, mix when rotating speed is 10r/min;
Four, it is respectively 150 twin screw extruder each section of temperature (by hopper to head), 160, 170, 180, 190, 200 DEG C, injection moulding machine each section of temperature (by hopper to nozzle) is respectively 190, 195, 200, 205 DEG C, feeding machine rotating speed on twin screw extruder is 100r/min, screw speed be 40r/min when, mixed for step 3 raw material is joined twin screw extruder from the spout of twin screw extruder, the polyacrylonitrile fibre of the preoxidation of step 2 is joined after twin screw extruder above the runner mouth in twin screw extruder spout front with the speed of 8g/min, carry out from twin-screw extrusion, by the matrix material extruded through cold cut machine pelletizing, shaping by injection moulding machine again, namely described polyacrylonitrile fibre/high-density polyethylene composite material is obtained.
The PAN/HDPE matrix material obtained by specific embodiment 1-10 is placed 24 hours as sample in sample chamber, sample chamber temperature remains on 23 DEG C, relative humidity is at 50 DEG C, sample testing shore hardness, shock strength, tensile strength and flexural strength are undertaken by ASTMD2240, ASTMD256, ASTMD638 and ASTMD790 standard respectively, and test result is in table 1.
Table 1PAN/HDPE composite material test result
Higher by upper table known PAN/HDPE matrix material rigidity and modulus, embody excellent mechanical property.

Claims (3)

1. the preparation method of polyacrylonitrile fibre/high-density polyethylene composite material, it is characterised in that it carries out according to following step:
One, by mass percentage take 70%��97% high density polyethylene(HDPE), the polyacrylonitrile fibre of 1%��20%, the ��-aminopropyl triethoxysilane coupling agent of 0.1%��10% and 0.1%��2% antioxidant 1010; Wherein said polyacrylonitrile fibre length is 1��12mm;
Two, high density polyethylene(HDPE) is put into electric heating constant-temperature blowing drying box, dry when temperature is 50 DEG C��70 DEG C, obtain dry high density polyethylene(HDPE); Polyacrylonitrile fibre being put into electric heating constant-temperature blowing drying box and carries out preoxidation, Pre oxidation is 120 DEG C��160 DEG C, and preoxidation time is 1h��4h, obtains the polyacrylonitrile fibre of preoxidation;
Three, by the high density polyethylene(HDPE) of described drying, ��-aminopropyl triethoxysilane coupling agent and antioxidant 1010 in low speed mixer, mix when rotating speed is 5.0��20.0r/min;
Four, it it is 150 DEG C��200 DEG C in twin-screw extrusion temperature, temperature in injection moulding machine is 190 DEG C��205 DEG C, feeding machine rotating speed on twin screw extruder is 70��100r/min, when screw speed is 20��40r/min, mixed for step 3 raw material is all joined twin screw extruder from the spout of twin screw extruder, the polyacrylonitrile fibre of the preoxidation of step 2 is joined after twin screw extruder above the runner mouth in twin screw extruder spout front with the speed of 0.6g/min��1.2g/min, from twin-screw extrusion, by the matrix material extruded through cold cut machine pelletizing, shaping by injection moulding machine again, namely described polyacrylonitrile fibre/high-density polyethylene composite material is obtained.
2. the preparation method of polyacrylonitrile fibre/high-density polyethylene composite material according to claim 1, it is characterised in that the bake out temperature of step 2 medium high density polyethylene is 60 DEG C, Pre oxidation is 140 DEG C.
3. the preparation method of polyacrylonitrile fibre/high-density polyethylene composite material, it is characterised in that it carries out according to following step:
One, the high density polyethylene(HDPE) of 70%��97%, the polyacrylonitrile fibre of 1%��20% and 0.1%��2% antioxidant 1010 is taken by mass percentage; Wherein said polyacrylonitrile fibre length is 1��12mm;
Two, high density polyethylene(HDPE) is put into electric heating constant-temperature blowing drying box, dry when temperature is 50 DEG C��70 DEG C, obtain dry high density polyethylene(HDPE); Polyacrylonitrile fibre being put into electric heating constant-temperature blowing drying box and carries out preoxidation, Pre oxidation is 120 DEG C��160 DEG C, and preoxidation time is 1h��4h, obtains the polyacrylonitrile fibre of preoxidation;
Three, by the high density polyethylene(HDPE) of described drying and antioxidant 1010 in low speed mixer, mix when rotating speed is 5.0��20.0r/min;
Four, it it is 150 DEG C��200 DEG C in twin-screw extrusion temperature, temperature in injection moulding machine is 190 DEG C��205 DEG C, feeding machine rotating speed on twin screw extruder is 70��100r/min, when screw speed is 20��40r/min, mixed for step 3 raw material is joined twin screw extruder from the spout of twin screw extruder, the polyacrylonitrile fibre of the preoxidation of step 2 is joined after twin screw extruder above the runner mouth in twin screw extruder spout front with the speed of 0.6g/min��12g/min, from twin-screw extrusion, by the matrix material extruded through cold cut machine pelletizing, shaping by injection moulding machine again, namely described polyacrylonitrile fibre/high-density polyethylene composite material is obtained.
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