CN109796658A - A kind of high intensity isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite and preparation method thereof - Google Patents
A kind of high intensity isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite and preparation method thereof Download PDFInfo
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- CN109796658A CN109796658A CN201910005841.4A CN201910005841A CN109796658A CN 109796658 A CN109796658 A CN 109796658A CN 201910005841 A CN201910005841 A CN 201910005841A CN 109796658 A CN109796658 A CN 109796658A
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- carbon black
- uhmwpe
- superconduction carbon
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Abstract
The present invention discloses a kind of high-intensitive isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite and preparation method thereof.It comprises the following components in parts by weight: 84~98.7 parts of UHMWPE powder, 2~5 parts of PP powder, 0.1~10 part of superconduction carbon black, 0.1 ~ 0.5 part of antioxidant, 0.1~0.5 part of coupling agent.Its preparation process is as follows: (1) raw material drying；(2) mixed at high speed prepares UHMWPE/PP/ superconduction carbon black particle；(3) high temperature compression moulding.High-intensitive isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite of the invention, when the addition content of superconduction carbon black is 0.5wt%, conductivity is close to 10‑6 S/cm has lower excess effusion value, higher tensile strength and toughness, in addition to having the excellent mechanical performance to compare favourably with ultra-high molecular weight polyethylene, also imparts the new specific function of UHMWPE/PP alloy.
Description
Technical field
The invention belongs to a kind of high-intensitive isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite and its preparation sides
Method.
Background technique
Ultra-high molecular weight polyethylene has many excellent performances, such as wear resistance, impact resistance, chemical corrosion resistance, Zi Run
Slip etc., existing many deficiencies: heat distortion temperature is low, hardness is low, intensity is low, heat resistance is poor, melt viscosity is high, mobility
The disadvantages of poor.These excellent performances are attributed to high molecular weight, and high molecular weight makes UHMWPE in solid state
With excellent comprehensive performance, while its very unique melt characteristic is also assigned, very big difficulty is brought to processing and forming.One
Aspect UHMWPE is in elastomer gel in melting, and viscosity is high, and melt flow index is almost 0, and mobility is very poor；Another party
The critical shear rate in face, UHMWPE melt is extremely low, it is easy to melt fracture occur.Therefore it is difficult with conventional thermoplastic
Processing method such as Screw Extrusion and and injection moulding processing UHMWPE product.
Currently, being on the one hand directed to UHMWPE processing difficulties, method of modifying mainly has physical modification (filling-modified), chemistry to change
Property (modification by copolymerization, cross-linking modified and crosslinking etc.) and polymer blending modification, the melt of UHMWPE itself can be improved by modification
Defect improves the characteristic of heat resistance, fire-retardant, antistatic and plastic processing etc..It is flowed
Using the method with lubrication dual-purpose inside and outside other polyolefin blends or addition conventional lubricant and the two.For total with UHMWPE
The mixed polyolefin mainly tradition PE and PP to improve UHMWPE processability, lubricant includes paraffin, polyethylene wax and stearic acid
Calcium etc..According to the literature, LLDPE/ UHMWPE, HDPE/UHMWPE and LDPE/UHMEPE blend compared with pure UHMWPE,
Melt viscosity is substantially reduced, but PE takes part in the formation of UHMWPE chain entanglement network, and the chain that UHMWPE cannot be effectively reduced twines
Density is tied, thus, PE is poor to the processing modified effect of UHMWPE.Research shows that using PP and UHMWPE blending and modifying, to super
High molecular weight polyethylene has the glutinous effect of apparent drop, can significantly improve the processing performance of UHMWPE, improve flowing to a greater degree
Property.
The surface resistivity of another aspect UHMWPE is ρs= 1016~1017Ω, volume resistivity ρv=1017~1018Ω•
Cm, dielectric constant are ε=2.2~2.3.Accumulation phenomenon can be will form because of friction in use, transport and molding process,
Static discharge is generated, static discharge can cause the security risks such as fire, limit UHMWPE tubing in certain special mining industry
Using, therefore UHMWPE tubing need to be carried out antistatic modified.
The present invention mainly uses carbon conductive filler (superconduction carbon black) filling-modified UHMWPE/PP alloy material, prepares
High-intensitive isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite, volume resistance can reach 105~107Ω cm range,
Surface resistivity≤105Ω.It is expected that and the composite material is applied to squeeze out the UHMWPE tubing of coal mining high abrasion, high rigidity
It produces and applies with high-strength panel.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is using conductive filler surface treatment, filling-modified and building
The method of the isolation structure conductive network of two-phase difference compatible system, provide a kind of high intensity it is low exceed seep isolation structure UHMWPE/
PP/ superconduction Carbon Black Conductive Composite imparts the new conducting function of unitary plastic alloy material, and realizes the antistatic function of product
Energy.
In order to achieve the object of the present invention, specific technical solution is as follows:
A kind of high intensity isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite, by following weight formula composition:
84~98.7 parts of UHMWPE powder
2~5 parts of PP powder
0.1~10 part of superconduction carbon black
0.1 ~ 0.5 part of antioxidant
0.1~0.5 part of coupling agent.
Above-mentioned weight percentage of each component content adds up to 100%.
The UHMWPE is powder, and 30 ~ 200 μm of particle size distribution range, number-average molecular weight is 300 ~ 8,000,000 g/mol, is drawn
Stretch intensity >=38MPa.
The PP powder is prior art products, the trade mark: PPH-T03, melt flow rate (MFR) 3g/10min, particle diameter distribution model
The small microballon powder for enclosing 200 ~ 600 μm, is provided by China Petroleum & Chemical Co., Ltd. Maoming Branch.
The superconduction carbon black, brand: hundred million win auspicious, model: F900A, 750 ~ 1100m of N2 adsorption specific surface2/ Kg, DBP absorb
Value 450 ml/g, 9 ~ 17nm of particle size range.By coupling agent surface treatment, preparation method are as follows: by 1 ~ 10 part of superconduction carbon black
Coupling agent with 0.1 ~ 0.5 part is added in high mixer, keeps 600 ~ 2000 rpm of revolving speed, 5 ~ 30min of high-speed stirred, the coupling
Agent is silane coupling agent or titanate coupling agent.
A kind of preparation method of the high-intensitive isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite, it is special
Sign is, is uniformly mixed after each component is dry through high-speed mixer, then prepare through compression molding, preparation method are as follows:
Include the following steps:
A. dry: by UHMWPE, superconduction carbon black powder in drying box 80 DEG C of 4 ~ 6 h of drying；
B. it weighs: the UHMWPE powder according to formula ratio, after weighing coupling agent, antioxidant, drying；
C. superconduction carbon black coupling agent treatment: the superconduction carbon black of formula ratio and 0.1 ~ 0.5 part of coupling agent are added in high mixer, are protected
600 ~ 2000 rpm of revolving speed, 5 ~ 30min of high-speed stirred are held, superconduction carbon black coupling agent treatment product is obtained, the coupling agent is silicon
Alkane coupling agent or titanate coupling agent；
D. it is blended: at superconduction carbon black coupling agent made from 0.1 ~ 0.5 part of UHMWPE powder, the antioxidant and step C after weighing
Reason product is placed in high-speed kneading machine high speed together and mixes 5 ~ 10 min, and the revolving speed of the high-speed mixer is 34000 rpm；
E. it is pressed and molded: being sufficiently mixed uniform raw material by above-mentioned and put into mold, add by 200 DEG C of high temperature heating, 17 MPa
Under the conditions of pressure, 20 min of hot pressing makes mixture sufficiently melt intracavitary fusion plastification in mold, then in 17 MPa, cold at room temperature
20 min are pressed, are fully cooled, demoulds, obtains high-intensitive isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite
UHMWPE/PP sheet alloy.
After adopting the above technical scheme, the present invention have the advantages that following features and: 1, product surface glossiness is good；2, it makes
Product have the characteristics that high-intensitive, high rigidity；3, product has good antistatic property；4, using filling-modified and incompatible body
It is the method for isolation structure, obtains the new material of high conduction performance, customizations, impart the new function of unitary plastic alloy material
Energy；5, product specific function, such as electromagnetic shielding, the application of antistatic and resistance-temperature sensor electronic equipment can be achieved.The present invention
The high-intensitive isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite of offer, when the addition content of superconduction carbon black is
0.5wt%, conductivity is close to 10-6 S/cm is shown in Fig. 1, compared to for ordinary carbon black, has lower excess effusion value, higher drawing
Stretch intensity and toughness.The conductive sheet metal of composite material compression moulding is in addition to excellent with comparing favourably with ultra-high molecular weight polyethylene
Mechanical property also imparts the new specific function of ultra high molecular polyethylene/polypropylene alloy.
Detailed description of the invention
Fig. 1 is the content of superconduction carbon black of the present invention to ultra-high molecular weight polyethylene/PP/ superconduction Carbon Black Conductive Composite
The influence diagram of conductivity.
Fig. 2 is that the content of superconduction carbon black is strong to the stretching of ultra-high molecular weight polyethylene/PP/ superconduction Carbon Black Conductive Composite
The influence diagram of degree.
Fig. 3 is the FE-SEM shape appearance figure of superconduction carbon black of the present invention.
Specific embodiment
UHMWPE used by the following embodiments of the present invention, Shanghai Lianle Chemical Industry Science and Technology Co., Ltd., producer, particle diameter distribution
30 ~ 200 μm of range, number-average molecular weight is 300 ~ 8,000,000 g/mol, tensile strength >=38MPa powder；Used superconduction charcoal
Black, brand: hundred million win auspicious, model: F900A, 750 ~ 1100m of N2 adsorption specific surface2450 ml/g of/Kg, DBP absorption value, partial size model
The powder of 9 ~ 17nm is enclosed, the FE-SEM shape appearance figure of superconduction carbon black is shown in 3.The PP powder uses the trade mark: PPH-T03, melt flows
Rate 3g/10min, 200 ~ 600 μm of particle size distribution range of small microballon powder, by Sinopec Group Maoming
The product that branch company provides.
Embodiment 1
A kind of high intensity isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite is by 84 parts of UHMWPE powder, PP powder 5
Part, 10 parts of superconduction carbon black, 420/ antioxidant 1010 of antioxidant/irgasfos 168 compounding 0.5 part of (mass ratio=1/1/1), silane are even
0.5 part of agent of connection.
Preparation method is carried out by following step:
A. dry: by UHMWPE powder, superconduction carbon black in drying box 80 DEG C of 5 h of drying；
B. weigh: UHMWPE powder/PP powder/superconduction carbon black/antioxidant/silane coupling agent is according to weight ratio=84/5/10/
0.5/0.5, each component is weighed；
C. superconduction carbon black coupling agent treatment: by formula ratio superconduction carbon black and 0.5 part of titanate coupling agent be added in high mixer,
600 ~ 2000 rpm of revolving speed, high-speed stirred 20min are kept, superconduction carbon black coupling agent treatment product is obtained；
D. it is blended: superconduction carbon black coupling agent treatment product made from the UHMWPE powder and antioxidant and step C after weighing
It is placed in high-speed kneading machine high speed together and mixes 7 min, the revolving speed of the high-speed mixer is 34000 rpm；
E. it is pressed and molded: being sufficiently mixed uniform raw material by above-mentioned and put into mold, add by 200 DEG C of high temperature heating, 17 MPa
Under the conditions of pressure, 20 min of hot pressing makes mixture sufficiently melt intracavitary fusion plastification in mold, then in 17 MPa, cold at room temperature
20 min are pressed, are fully cooled, demoulds, obtains high-intensitive isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite
UHMWPE/PP sheet alloy, electric conductivity and mechanical property are shown in Fig. 1 and Fig. 2.
Embodiment 2
A kind of high intensity isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite is by 89 parts of UHMWPE powder, PP powder 5
Part, 5 parts of superconduction carbon black, 420/ antioxidant 1010 of antioxidant/irgasfos 168 compounding 0.5 part of (mass ratio=1/1/1), silane are even
0.5 part of agent of connection.
Preparation method is carried out by following step:
A. dry: by UHMWPE powder, superconduction carbon black in drying box 80 DEG C of 5 h of drying；
B. weigh: UHMWPE powder/PP powder/superconduction carbon black/antioxidant/silane coupling agent is according to weight ratio=89/5/5/0.5/
0.5, weigh each component；
C. superconduction carbon black coupling agent treatment: by formula ratio superconduction carbon black and 0.5 part of titanate coupling agent be added in high mixer,
600 ~ 2000 rpm of revolving speed, high-speed stirred 20min are kept, superconduction carbon black coupling agent treatment product is obtained；
D. it is blended: superconduction carbon black coupling agent treatment product made from the UHMWPE powder and antioxidant and step C after weighing
It is placed in high-speed kneading machine high speed together and mixes 7 min, the revolving speed of the high-speed mixer is 34000 rpm；
E. it is pressed and molded: being sufficiently mixed uniform raw material by above-mentioned and put into mold, add by 200 DEG C of high temperature heating, 17 MPa
Under the conditions of pressure, 20 min of hot pressing makes mixture sufficiently melt intracavitary fusion plastification in mold, then in 17 MPa, cold at room temperature
20 min are pressed, are fully cooled, demoulds, obtains high-intensitive isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite
UHMWPE/PP sheet alloy, electric conductivity and mechanical property are shown in Fig. 1 and Fig. 2.
Embodiment 3
A kind of high intensity isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite is by 93 parts of UHMWPE powder, PP powder 5
Part, 1 part of superconduction carbon black, 420/ antioxidant 1010 of antioxidant/irgasfos 168 compounding 0.5 part of (mass ratio=1/1/1), silane are even
0.5 part of agent of connection.
Preparation method is carried out by following step:
A. dry: by UHMWPE powder, superconduction carbon black in drying box 80 DEG C of 5 h of drying；
B. weigh: UHMWPE powder/PP powder/superconduction carbon black/antioxidant/silane coupling agent is according to weight ratio=93/5/1/0.5/
0.5, weigh each component；
C. superconduction carbon black coupling agent treatment: by formula ratio superconduction carbon black and 0.5 part of titanate coupling agent be added in high mixer,
600 ~ 2000 rpm of revolving speed, high-speed stirred 20min are kept, superconduction carbon black coupling agent treatment product is obtained；
D. it is blended: superconduction carbon black coupling agent treatment product made from the UHMWPE powder and antioxidant and step C after weighing
It is placed in high-speed kneading machine high speed together and mixes 7 min, the revolving speed of the high-speed mixer is 34000 rpm；
E. it is pressed and molded: being sufficiently mixed uniform raw material by above-mentioned and put into mold, add by 200 DEG C of high temperature heating, 17 MPa
Under the conditions of pressure, 20 min of hot pressing makes mixture sufficiently melt intracavitary fusion plastification in mold, then in 17 MPa, cold at room temperature
20 min are pressed, are fully cooled, demoulds, obtains high-intensitive isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite
UHMWPE/PP sheet alloy, electric conductivity and mechanical property are shown in Fig. 1 and Fig. 2.
Claims (5)
1. a kind of high intensity isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite, which is characterized in that by following weight
The raw material of proportion is made:
84~98.7 parts of UHMWPE powder, 2~5 parts of PP powder, 0.1~10 part of superconduction carbon black, 0.1 ~ 0.5 part of antioxidant, coupling
0.1~0.5 part of agent.
2. a kind of high-intensitive isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite according to claim 1,
It is characterized in that, the UHMWPE powder is 30 ~ 200 μm of particle size distribution range, and number-average molecular weight is 300 ~ 8,000,000 g/mol, is drawn
Stretch intensity >=38MPa powder.
3. a kind of high-intensitive isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite according to claim 1,
It is characterized in that, the PP powder uses the trade mark: PPH-T03, melt flow rate (MFR) 3g/10min, 200 ~ 600 μ of particle size distribution range
The small microballon powder of m, the product provided by China Petroleum & Chemical Co., Ltd. Maoming Branch.
4. a kind of high-intensitive isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite according to claim 1,
Be characterized in that, the superconduction carbon black, brand: hundred million win auspicious, model: F900A, 750 ~ 1100m of N2 adsorption specific surface2/ Kg, DBP inhale
450 ml/g of receipts value, 9 ~ 17nm of particle size range, superconduction carbon black is by coupling agent surface treatment, preparation method are as follows: by superconduction charcoal
It is black to be weighed with coupling agent 10:0.1 ~ 0.5 part in mass ratio, it is added in high mixer, keeps 600 ~ 2000 rpm of revolving speed, high-speed stirred
5 ~ 30min, the coupling agent are silane coupling agent or titanate coupling agent.
5. a kind of any high-intensitive isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite of claim 1-4
Preparation method includes the following steps:
A. dry: by UHMWPE, superconduction carbon black powder in drying box 80 DEG C of 4 ~ 6 h of drying；
B. it weighs: the UHMWPE powder according to formula ratio, after weighing coupling agent, antioxidant, drying；
C. superconduction carbon black coupling agent treatment: the superconduction carbon black of formula ratio and 0.1 ~ 0.5 part of coupling agent are added in high mixer, are protected
600 ~ 2000 rpm of revolving speed, 5 ~ 30min of high-speed stirred are held, superconduction carbon black coupling agent treatment product is obtained, the coupling agent is silicon
Alkane coupling agent or titanate coupling agent；
D. it is blended: at superconduction carbon black coupling agent made from 0.1 ~ 0.5 part of UHMWPE powder, the antioxidant and step C after weighing
Reason product is placed in high-speed kneading machine high speed together and mixes 5 ~ 10 min, and the revolving speed of the high-speed mixer is 34000 rpm；
E. it is pressed and molded: being sufficiently mixed uniform raw material by above-mentioned and put into mold, add by 200 DEG C of high temperature heating, 17 MPa
Under the conditions of pressure, 20 min of hot pressing makes mixture sufficiently melt intracavitary fusion plastification in mold, then in 17 MPa, cold at room temperature
20 min are pressed, are fully cooled, demoulds, obtains high-intensitive isolation structure UHMWPE/PP/ superconduction Carbon Black Conductive Composite
UHMWPE/PP sheet alloy.
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| CN110607014A (en) * | 2019-08-29 | 2019-12-24 | 福建师范大学 | Preparation method of high-strength high-toughness electromagnetic shielding composite material |
| CN110724340A (en) * | 2019-09-26 | 2020-01-24 | 万华化学（宁波）有限公司 | Permanent antistatic polypropylene composite material and preparation method thereof |
| CN113278218A (en) * | 2020-02-20 | 2021-08-20 | 中国科学院化学研究所 | Conductive composite material with isolation structure and preparation method thereof |
| CN115403861A (en) * | 2022-09-21 | 2022-11-29 | 武汉金发科技有限公司 | Isotropic electromagnetic shielding polypropylene composite material and preparation and application thereof |
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Application publication date: 20190524 |