CN109575582A - The conductive thermoplastic elastomer and preparation method thereof of encapsulated polyamide - Google Patents
The conductive thermoplastic elastomer and preparation method thereof of encapsulated polyamide Download PDFInfo
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- CN109575582A CN109575582A CN201811552007.9A CN201811552007A CN109575582A CN 109575582 A CN109575582 A CN 109575582A CN 201811552007 A CN201811552007 A CN 201811552007A CN 109575582 A CN109575582 A CN 109575582A
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- encapsulated
- tpe
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- thermoplastic elastomer
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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
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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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
- C08K2201/001—Conductive additives
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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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of conductive thermoplastic elastomers and preparation method thereof of encapsulated polyamide, are prepared by weight by following component: the HSBC of 20-70；The maleic anhydride modified component of 5-50；The polarity elasticity component of 5-50；The LDPE or PE of 5-50；The SBS or SIS of 5-50；5-30 conductive black；The white oil of 1-50；The antioxidant of 1-5；The anti ultraviolet agent of 1-5；The slipping agent of 1-5；The filler of 1-7.A certain amount of conductive black is added in the present invention, forms continuous reticular structure in TPE as the channel of electron transfer, can assign TPE material and lead certain electrical property；Remaining amine groups reaction generates acid imide on maleic groups and PA substrate surface, can greatly improve the binding force between soft or hard glue；Increase the integral polarity of TPE by the way that polar elastomers component is added, there is certain mobility and ductility.
Description
Technical field
The present invention relates to a kind of conductive thermoplastic elastomers and preparation method thereof of encapsulated polyamide.
Background technique
Encapsulated thermoplastic elastomer is exactly that flexible glue (Thermoplastic Elastic Material Used or abbreviation TPE) is coated to ebonite (engineering plastic
Expect, usually PE, PP, PC, PET or PBT, PA etc.).Encapsulated main purpose is to increase beautiful, improvement sense of touch, promotion feel,
Damping is provided, enhancing is grip, prevents from skidding, and obstructs gas or liquid, is coupled different components etc..The processing side generally used
Method has (1) double-shot moulding, one-pass molding；(2) or insert injection moulding is used, post forming is coated on engineering plastics substrate.
It is mainly used in medical equipment handle, electric tool handle, wearable device, automobile interior decoration, disappear product fastly, and household electrical appliance produce
Product accessory, wire and cable, the application such as dietetic food packaging.TPE can adjust hardness, encapsulated hardness model by adjusting being formulated
It encloses generally at 35~85 degree of Shore A (shore A).Encapsulated principle is being infused first is that using TPE after injection molding machine heating melting
When modeling is projected, using the melt temperature and injection pressure of itself, opened before this in ebonite surface spreading rapidly；At this moment TPE handle
A part of heat of itself is transmitted to ebonite surface, melts so as to cause on ebonite surface with the outer layer of several nanometer thickness of TPE contact
Melt；The part that contacts with TPE of ebonite molecule segment under the action of molten condition and injection pressure in this way interpenetrates, microcosmic
Upper formation strand winding, macro manifestations are to form one layer of adhesive layer, greatly promote the bonding of flexible glue and ebonite；Second is that in TPE
Active reactive group and ebonite in active reactive group generate chemical reaction, form more stable chemical bond, further mention
High combination between flexible glue and ebonite: as the grafted maleic anhydride component in flexible glue and the amido in ebonite or hydroxyl are anti-
It answers, forms imide bond or ester bond.
High molecular material is due to the molecular structure of itself, substantially electric non-conductor.And conducting polymer is
With conducting function (including semiconduction, metallic conductivity and superconductivity), conductivity 10-6S/m or more polymer
Material.Conductive polymer material have density is small, easy processing, it is corrosion-resistant, can large area film forming and conductivity can be at more than ten
The features such as being adjusted in the range of the order of magnitude can be used as the substitute of various metals material and inorganic conductive material, and
And have become the indispensable a kind of material of many advanced industrial departments and sophisticated technology field.
Conductive polymer material is generally divided into compound and structural type two major classes:
(1) composite type high-conductivity molecular material.It is multiple by filling by general high molecular material and various conductive materials
Close, surface recombination or the modes such as lamination is compound and be made.Principal item have conductive plastics, conductive rubber, conductive fibers,
Conductive coating, conductive adhesive and transparent conductive film etc..Its performance and the type of conductive filler, dosage, granularity and state
And their dispersities in high molecular material have very big relationship.Common conductive filler has carbon black, metal powder, gold
Belong to paillon, metallic fiber, carbon fiber etc..
(2) structural conductive macromolecular material.Refer to macromolecular structure itself or through having conducting function after overdoping
High molecular material.Semiconducting polymer, high-molecule metal and macromolecule superconductor can be divided into again according to the size of conductivity.
Electron-conducting polymer material and ionic conductive high molecular material can be divided into according to electrical conduction mechanism.Electron-conducting polymer material
Be structurally characterized in that with line style or the big conjugated system of face type, under the action of heat or light by the activation of conjugated pi electron into
Row is conductive, and conductivity is generally in the range of semiconductor.
According to the demand of client and market, in encapsulated application, the material for ebonite is also gradually from the letter before the more than ten years
Unit price honest and clean non-polar material PE or PP, are gradually transitions mechanical performance more preferably, and valence high polar material PC or PET etc. are existing
In the higher PA of more and more use intensities or fiber (carbon fiber, glass) enhancing PA as substrate, and machinery can be carried out
The polyformaldehyde (POM) of machining also starts to occur as substrate.Encapsulated complexity are as follows:
Due to easily forming hydrogen bond between amido bond in the strand of PA substrate, lead to higher (30% left side of its crystallinity
It is right), the fusing point of the crystal region thus constituted is also higher (usually at 250 DEG C or more), so encapsulated PA substrate, especially encapsulated
High temperature PA is a problem in the industry.
In some special applications for needing electric conductivity, the bracelet for example, preventing child is wandered away, convict's electricity of serving a sentence out of prison
In the case where battery provides electric power, itself forms a conductive circuit for sub- handcuffss etc., bracelet or handcuffss.When it is destroyed
When, galvanic circle is just disconnected, and at this moment built-in alert program will be activated and sound an alarm.This requires the materials of this application
Material needs to have three kinds of performances:
1, light-weight, intensity is high, is not easy to be destroyed: for example plus the high-strength PA of carbon fiber or glass；
2, comfortable wearing, will not make skin allergy or abraded skin: TPE material is suitable for since hardness can be reconciled
For material in direct contact with the skin in wearable device；
3, electrically conductive: conductive material to be added in TPE material, compound conductive TPE is made.
Due to easily forming hydrogen bond between the amido bond between the different molecular chain of PA substrate or inside same strand,
Cause its crystallinity higher (30% or so), the fusing point of the crystal region thus constituted is also higher (usually at 250 DEG C or more),
So encapsulated PA substrate, especially encapsulated high temperature PA is a problem in the industry.The TPE product of encapsulated PA currently on the market
The problems such as generally existing encapsulated power is lower, and hardness is higher, and sense of touch is poor.Main reason is that the design defect for being formulated itself is led
It causes: because encapsulated power is lower, it has to parent of a certain proportion of PA to improve and want encapsulated PA substrate be added in TPE
And power；Due to the addition of PA, the integral hardness of TPE is caused to increase, it is poor so as to cause sense of touch and elasticity, and material is processed
When mobility it is also poor.In addition, TPE formula in various components chemical molecular structure itself due to, on the whole
It is the insulator of electricity.
Therefore, a kind of conductive thermoplastic elastomer of encapsulated polyamide is needed.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of conductive thermoplastic elastomer of encapsulated polyamide and
Preparation method.
In order to achieve the above object, technical scheme is as follows:
The present invention provides a kind of conductive thermoplastic elastomer of encapsulated polyamide, prepared by weight by following component and
At:
As a preferred option, at least one of HSBC SEBS, SEPS, SEEPS.
As a preferred option, maleic anhydride modified component is in MAH-PP, MAH-PE, MAH-POE, MAH-SEBS
It is at least one.
As a preferred option, polarity elasticity component is LA Polymer, at least one in TU-5265, TPU, TPEE
Kind.
As a preferred option, the present invention also provides a kind of preparation sides of the conductive thermoplastic elastomer of encapsulated polyamide
Method, comprising the following steps:
S1, weigh by weight HSBC, maleic anhydride modified component, polarity elasticity component, LDPE or PE, SBS or SIS,
Conductive black, white oil, antioxidant, anti ultraviolet agent, slipping agent, filler mix at 180-220 DEG C；
After the completion of S2, mixing, the injection molding at 200-280 DEG C.
The invention has the following advantages:
(1) a certain amount of conductive black is added, forms continuous reticular structure in TPE as the channel of electron transfer,
TPE material can be assigned and lead certain electrical property；
(2) remaining amine groups reaction generates acid imide on the maleic groups and PA substrate surface in formula, this
The combination of chemical bond can greatly improve the binding force between soft or hard glue；
(3) increase the integral polarity of TPE by the way that polar elastomers component is added；
(4) stream of TPE is provided by the low density PE (LDPE) or (total) poly- PP of addition film forming grade or wire drawing grade
Dynamic property and ductility；
(5) bonding force is improved by the way that unhydrided SBS or SIS is added.
Specific embodiment
The following detailed description of the preferred embodiment of the present invention.
Embodiment 1
In order to reach the purpose of the present invention, a kind of encapsulated polyamide is provided in one of embodiment of the invention
Conductive thermoplastic elastomer, be prepared by weight by following component:
Embodiment 2
In order to further optimize implementation result of the invention, in another embodiment of the invention, aforementioned interior
On the basis of appearance, the present invention also provides a kind of conductive thermoplastic elastomers of encapsulated polyamide, are made by weight by following component
It is standby to form:
Embodiment 3
In order to further optimize implementation result of the invention, in another embodiment of the invention, aforementioned interior
On the basis of appearance, the present invention also provides a kind of conductive thermoplastic elastomers of encapsulated polyamide, are made by weight by following component
It is standby to form:
Embodiment 4
In order to further optimize implementation result of the invention, in another embodiment of the invention, aforementioned interior
On the basis of appearance, the present invention also provides a kind of conductive thermoplastic elastomers of encapsulated polyamide, are made by weight by following component
It is standby to form:
Embodiment 5
In order to further optimize implementation result of the invention, in another embodiment of the invention, aforementioned interior
On the basis of appearance, the present invention also provides a kind of conductive thermoplastic elastomers of encapsulated polyamide, are made by weight by following component
It is standby to form:
Embodiment 6
In order to further optimize implementation result of the invention, in another embodiment of the invention, aforementioned interior
On the basis of appearance, the present invention also provides a kind of conductive thermoplastic elastomers of encapsulated polyamide, are made by weight by following component
It is standby to form:
Embodiment 7
In order to further optimize implementation result of the invention, in another embodiment of the invention, aforementioned interior
On the basis of appearance, the present invention also provides a kind of preparation methods of the conductive thermoplastic elastomer of encapsulated polyamide, including following step
It is rapid:
S1, weigh by weight HSBC, maleic anhydride modified component, polarity elasticity component, LDPE or PE, SBS or SIS,
Conductive black, white oil, antioxidant, anti ultraviolet agent, slipping agent, filler mix at 180-220 DEG C, and present embodiment is optional
180 DEG C, 200 DEG C or 220 DEG C；
After the completion of S2, mixing, the injection molding at 200-280 DEG C, optional 200 DEG C, 260 DEG C or 280 of present embodiment
℃。
Mechanical property (ASTM standard):
Test method:
Peeling strength test: encapsulated substrate (Dupont Zytel 101, common PA), size are first molded by are as follows: 2mm ×
122mm×150mm；TPE high speed and high pressure is mapped on PA substrate by quadric injection mould.
Before test, encapsulated plate is first placed at least two hours.Then batten to be tested is cut out with standard sample ruler, having a size of
1mm×25mm×150mm.Batten one end is clipped on fixture, and encapsulated plate is fixed in customized peel jig, the stripping that can be surveyed
From maximum, force (N) and peel strength (KN/m).
Using the conductivity (S/m) of four termination electrode methods measurement material: four electrodes of arranging on sample, two of inside
Electrode is for measuring voltage, and two electrodes in outside are then used to measure electric current.
TPE is very high to the bonding force of PA substrate in the present invention, is substantially behaved as remaining removing: in external force
Under effect, after encapsulated TPE is removed from PA substrate, since bonding force is too high, the TPE for some is not completely exfoliated
And it remains on the surface of the substrate.In most of test, even if batten is pulled off, it will not be removed from substrate.Namely
It says, the bonding force of TPE and PA substrate is far longer than the tensile strength of TPE itself.
After the present invention in TPE is formulated by being added 20% carbon black, the conductivity of system can reach 10-6S/m~
10-4Between S/m, it can satisfy preventing child completely and wander away and bracelet or electronic handcuff and other similar need conductive application.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to this hair
Bright protection scope.
Claims (5)
1. the conductive thermoplastic elastomer of encapsulated polyamide, which is characterized in that be prepared by weight by following component:
2. the conductive thermoplastic elastomer of encapsulated polyamide according to claim 1, which is characterized in that HSBC SEBS,
At least one of SEPS, SEEPS.
3. the conductive thermoplastic elastomer of encapsulated polyamide according to claim 1, which is characterized in that maleic anhydride modified
Component is at least one of MAH-PP, MAH-PE, MAH-POE, MAH-SEBS.
4. the conductive thermoplastic elastomer of encapsulated polyamide according to claim 1, which is characterized in that polarity elasticity component
For at least one of LA Polymer, TU-5265, TPU, TPEE.
5. a kind of preparation method of the conductive thermoplastic elastomer of the encapsulated polyamide as described in claim 1-4 is any, special
Sign is, comprising the following steps:
S1, HSBC, maleic anhydride modified component, polarity elasticity component, LDPE or PE, SBS or SIS, conduction are weighed by weight
Carbon black, white oil, antioxidant, anti ultraviolet agent, slipping agent, filler mix at 180-220 DEG C；
After the completion of S2, mixing, the injection molding at 200-280 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811552007.9A CN109575582A (en) | 2018-12-18 | 2018-12-18 | The conductive thermoplastic elastomer and preparation method thereof of encapsulated polyamide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811552007.9A CN109575582A (en) | 2018-12-18 | 2018-12-18 | The conductive thermoplastic elastomer and preparation method thereof of encapsulated polyamide |
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| Publication Number | Publication Date |
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| CN109575582A true CN109575582A (en) | 2019-04-05 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL310403A1 (en) * | 1993-11-16 | 1995-12-11 | Baxter Int | Polymer blends for use in making medical packages and devices |
| CN1930237A (en) * | 2004-03-05 | 2007-03-14 | Gls公司 | Block copolymer compositions for overmolding any nylon |
| CN101255262A (en) * | 2008-04-01 | 2008-09-03 | 宁波一舟塑胶有限公司 | Thermoplastic elastomer capable of coating and bonding with nylon |
| CN102604311A (en) * | 2011-12-22 | 2012-07-25 | 宁波敏禾机械有限公司 | Electroconductive thermoplastic elastomer composition as well as preparation method and applications thereof |
| CN103554819A (en) * | 2013-10-28 | 2014-02-05 | 深圳市科聚新材料有限公司 | Thermoplastic elastomer (TPE) alloy for nylon adhesive encapsulation and preparation method thereof |
-
2018
- 2018-12-18 CN CN201811552007.9A patent/CN109575582A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL310403A1 (en) * | 1993-11-16 | 1995-12-11 | Baxter Int | Polymer blends for use in making medical packages and devices |
| CN1930237A (en) * | 2004-03-05 | 2007-03-14 | Gls公司 | Block copolymer compositions for overmolding any nylon |
| CN101255262A (en) * | 2008-04-01 | 2008-09-03 | 宁波一舟塑胶有限公司 | Thermoplastic elastomer capable of coating and bonding with nylon |
| CN102604311A (en) * | 2011-12-22 | 2012-07-25 | 宁波敏禾机械有限公司 | Electroconductive thermoplastic elastomer composition as well as preparation method and applications thereof |
| CN103554819A (en) * | 2013-10-28 | 2014-02-05 | 深圳市科聚新材料有限公司 | Thermoplastic elastomer (TPE) alloy for nylon adhesive encapsulation and preparation method thereof |
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Application publication date: 20190405 |
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