CN106380678A - High dielectric property polypropylene/nylon/whisker composite material and preparation method thereof - Google Patents
High dielectric property polypropylene/nylon/whisker composite material and preparation method thereof Download PDFInfo
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- CN106380678A CN106380678A CN201610735830.8A CN201610735830A CN106380678A CN 106380678 A CN106380678 A CN 106380678A CN 201610735830 A CN201610735830 A CN 201610735830A CN 106380678 A CN106380678 A CN 106380678A
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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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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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
- C08K2201/011—Nanostructured 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
Abstract
The invention discloses a high dielectric property polypropylene/nylon/whisker composite material and a preparation method thereof. The prepared material comprises, by weight, 65-90 parts of polypropylene, 10-35 parts of nylon, 2-20 parts of a compatibilizer, 5-20 parts of modified ceramic whisker, 0.2-2.0 parts of a thermal stabilizer and 0.2-2 parts of a processing aid. According to the invention, the ceramic whisker with the surface modified by a silane coupling agent is selected to reinforce the polypropylene/nylon composite material, and the maleic anhydride grafted polypropylene compatibilizer is added to increase the binding force between resin interfaces. The obtained composite material has good dielectric properties on the basis of high tensile strength, and can be widely applied in some fields with high requirements for material strength and dielectric properties.
Description
Technical field
The present invention relates to a kind of enhanced polypropylene/nylon composite materials and preparation method thereof, more particularly, to a kind of Gao Jie
Electrical property PP/PA/metal whisker composite and preparation method thereof, belongs to polymer composite and its process technology neck
Domain.
Background technology
Nylon is that one kind has highly polar and can form hydrogen bond in molecule interchain, has the crystallization of certain reactivity simultaneously
Property polymer, belongs to engineering plastics.It has good mechanical property and wearability, but because the polarity of nylon is higher, leads
Cause nylon hygroscopic, thus affecting its dimensional stability and electrical property, especially dielectric properties.And polypropylene is a kind of application
Widely general-purpose plastics, compared with other general-purpose plastics, it has, and low cost, good mechanical performance, chemical resistance be good, water suction
The low advantage of rate, and insulating properties, thermostability and transparency are all very good, but there is also heat distortion temperature high and low temperature is not tough simultaneously
Property is not good, molding shrinkage is larger, light resistance is poor, not easy dyeing the shortcomings of, and these shortcomings limit it and widely apply,
For widening its application, extensively carry out resin modified for polypropylene and had substantial amounts of application.
Have in currently available technology and nylon is modified by the method for blending with polypropylene, can be in conjunction with the advantage of the two
Obtain impact resistance, high abrasion, height is heat-resisting, low water absorption, easy coloring, shape and size stability are higher PP/PA multiple
Compound, but its intensity effect is still not ideal enough.Research worker is therefore had to add in the composite of polypropylene and nylon respectively
Plant reinforcer, such as pearl filler, glass fibre etc., although above-mentioned reinforcer can obtain the good composite wood of intensity
Material, but cannot improve the dielectric properties of composite on the basis of ensureing the good intensity of material.
Content of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of high dielectric property polypropylene/Buddhist nun
Dragon/metal whisker composite and preparation method thereof, the method prepares the composite of gained in the base possessing higher tensile strength
Good dielectric properties are had on plinth.
The present invention be employed technical scheme comprise that to solve its technical problem：
A kind of high dielectric property PP/PA/metal whisker composite, including following each component by weight：
It is preferably：
Wherein said nylon be formed for monomer with caprolactam nylon resin (PA6 resin), with hexamethylene diamine and oneself two
Acid for monomer formation nylon resin (PA66 resin), the nylon resin (PA1010 being formed for monomer with decanedioic acid and decamethylene diamine
Resin) the ternary Nylon resin that formed of and nylon 6- nylon 1010-nylon66 fiber；Described bulking agent reaches for maleic anhydride grafting ratio
0.2～5.0% maleic anhydride inoculated polypropylene；There is carbonyl due on the strand main chain of nylon, therefore can with have one
There is corresponding coordination effect between the strand of the maleic anhydride inoculated polypropylene determining percent grafting, realize In Situ Compatibilization.
Wherein said modified ceramic matter whisker is carborundum through silane coupler surface modification, through silane coupler surface
At least one in modified potassium titanate and the Alborex M 12 through silane coupler surface modification；Above-mentioned modified ceramic matter whisker is logical
Cross following preparation methoies and prepare gained：(1) ceramic whiskers are placed at 120～130 DEG C dry 2～3h removal absorption water to obtain
Drying of ceramic matter whisker；(2) relatively dry ceramic whiskers weight/mass percentage composition is taken to be the silane coupled of 0.8～1.5% consumption
Agent, this silane coupler is mixed in 90～95 DEG C of deionized water with gained drying of ceramic matter whisker in (1), heats and adopt
Stirred after 10～15min with the rotating speed of 900～1200r/min, separated by the way of centrifugation and obtain solid matter；(3)
Gained solid matter in (2) is dried to be placed in after 2～3h at 60～65 DEG C at 100～110 DEG C again 12～18h is dried, obtain
Modified ceramic matter whisker；Wherein said ceramic whiskers are at least one in carborundum, potassium titanate and Alborex M 12, these potteries
Matter whisker can play enhancing in the blend and improve dielectric properties effect.
Its further technical scheme is：
Described silane coupler is gamma-aminopropyl-triethoxy-silane, γ-glycidyl ether oxygen propyl trimethoxy silicane
With at least one in γ-(methacryloxypropyl) propyl trimethoxy silicane, silane coupler used herein is to pottery
Matter is whisker modified, can improve the interface compatibility between ceramic whiskers and polymeric matrix in material.
Described polyacrylic melt flow rate (MFR) is HOPP or the COPP of 1～100g/10min.
Described heat stabilizer is phenols, amine, phosphorous acid esters, half Hinered phenols, acryloyl group functional group and monothioester
Compound species and calixarene kind at least one, heat stabilizer can suppress the degraded that polypropylene in the course of processing produces existing
As.
Described processing aid be low molecule esters, metal soap, stearic acid be combined esters and amide-type at least one,
Processing aid can promote the good dispersion between each composition of blend.
The invention also discloses a kind of preparation method of above-mentioned high dielectric property PP/PA/metal whisker composite, should
Method comprises the steps：(1) ceramic whiskers are placed at 120～130 DEG C dry 2～3h removal absorption water and obtain drying of ceramic
Matter whisker；(2) take the silane coupler that relatively dry ceramic whiskers weight/mass percentage composition is 0.8～1.5% consumption, by this silicon
In alkane coupling agent and (1), gained drying of ceramic matter whisker is mixed in 90～95 DEG C of deionized water, heat and adopt 900～
After the rotating speed of 1200r/min stirs 10～15min, separated by the way of centrifugation and obtain solid matter；(3) by (2)
Gained solid matter is placed in after 2～3h being dried at 100～110 DEG C again and 12～18h is dried at 60～65 DEG C, obtains modified ceramic
Matter whisker；Wherein said ceramic whiskers are at least one in carborundum, potassium titanate and Alborex M 12；(4) by polypropylene, Buddhist nun
Dragon, bulking agent, modified ceramic matter whisker, heat stabilizer and processing aid put into rotating speed for 600～800r/min and temperature is 23
～25 DEG C of high-speed mixer for dry mixing 3～5min obtains pre-composition；(5) by gained pre-composition in (4) through draw ratio be 40
～45:In 1 double screw extruder melting mixing dispersion after, extruded, cooling, pelletize obtain high dielectric property polypropylene/Buddhist nun
The temperature of dragon/metal whisker composite, wherein double screw extruder is 190～240 DEG C.
The method have the benefit that：The present invention to be increased through silane coupler modified ceramic whiskers from surface
Strong PP/PA composite, and increased between resin boundary surface by adding the bulking agent of maleic anhydride inoculated polypropylene
Adhesion, the composite of gained has good dielectric properties on the basis of possessing higher tensile strength, can be extensive
It is applied to some and higher field is required to the strength of materials and dielectric properties.
Specific embodiment
With reference to specific embodiment and comparative example, the present invention is described in detail.
Raw material used in following specific embodiments and comparative example is as described below, but raw material used in this application
It is not limited to the concrete model of following disclosed raw materials.
Polypropylene (PP)：Melt flow rate (MFR) is 30g/10min, and the trade mark is CSPC EP548R；Ceramic whiskers：Carbon
SiClx, potassium titanate, Alborex M 12；Silane coupler：Gamma-aminopropyl-triethoxy-silane (KH550), γ-glycidyl ether oxygen third
Base trimethoxy silane (KH560), γ-(methacryloxypropyl) propyl trimethoxy silicane (KH570)；Nylon：PA1010, on
Hai Sailuluchang produces；Bulking agent：Laboratory is made by oneself, and maleic anhydride grafting ratio is 0.88% maleic anhydride inoculated polypropylene；
Heat stabilizer：Phosphite ester type thermal stabilizing agent selects refined precious 1010, and phenolic thermostabilizers select refined precious 168；Processing aid：Refined treasured
EBS.Select the silicon carbide whisker of long time without surface modification wherein in comparative example 1, select in comparative example 2 and change without surface
The potassium titanate crystal whisker of property, without whisker in comparative example 3；From the carbonization through KH550 surface modification in specific embodiment 1
Silicon, from the potassium titanate through KH560 surface modification in specific embodiment 2, from the titanium modified through KH560 in specific embodiment 3
Sour potassium, from the Alborex M 12 modified through KH570 in specific embodiment 4.
Preparation process according to following preparation methoies carries out PP/PA/whisker described in specific embodiment 1-4 and is combined
The preparation of material, this preparation method comprises the steps：
(1) ceramic whiskers are placed at 120～130 DEG C dry 2～3h removal absorption water and obtain drying of ceramic matter whisker；
(2) weigh silane coupler by consumption in table 1 formula, this silane coupler is mixed with gained drying of ceramic matter whisker in (1)
In 90～95 DEG C of deionized water, after heating and adopt the rotating speed of 900～1200r/min to stir 10～15min, using centrifugation
Detached mode separates and obtains solid matter；(3) gained solid matter in (2) is dried after 2～3h at 100～110 DEG C again
It is placed in and 12～18h is dried at 60～65 DEG C, obtain modified ceramic matter whisker；(4) by polypropylene, nylon, bulking agent, modified ceramic
Matter whisker, heat stabilizer and processing aid put into that rotating speed is 600～800r/min and temperature is 23～25 DEG C of high-speed mixer
In 3～5min be dry mixed obtain pre-composition；(5) by gained pre-composition in (4) through draw ratio be 40～45:1 twin-screw extrusion
In machine melting mixing dispersion after, extruded, cooling, pelletize obtain high dielectric property PP/PA/metal whisker composite, its
The temperature of middle double screw extruder is 190～240 DEG C.
It is multiple that preparation process according to following preparation methoies carries out PP/PA/whisker described in comparative example 1 and 2
The preparation of condensation material, this preparation method comprises the steps：By polypropylene, nylon, bulking agent, long time without surface modification pottery
Whisker, heat stabilizer and processing aid put into that rotating speed is 600～800r/min and temperature is in 23～25 DEG C of high-speed mixer
3～5min is dry mixed and obtains pre-composition；Then gained pre-composition through draw ratio be 40～45:Melt in 1 double screw extruder
Mixing dispersion after, extruded, cooling, pelletize obtain high dielectric property PP/PA/metal whisker composite, wherein twin screw
The temperature of extruder is 190～240 DEG C.
Preparation process according to following preparation methoies carries out PP/PA composite described in comparative example 3
Preparation, this preparation method comprises the steps：
It is 600～800r/min and temperature that polypropylene, nylon, bulking agent, heat stabilizer and processing aid are put into rotating speed
High-speed mixer for dry mixing 3～5min for 23～25 DEG C obtains pre-composition；Then gained pre-composition through draw ratio be 40～
45:In 1 double screw extruder melting mixing dispersion after, extruded, cooling, pelletize obtain high dielectric property PP/PA
The temperature of composite, wherein double screw extruder is 190～240 DEG C.
Table 1 specific embodiment 1-4 and comparative example's 1-3 formula consumption (unit：kg)
The above-mentioned polypropylene nylon composite materials preparing gained and PP/PA/metal whisker composite are molded into mark
Quasi- batten test tensile strength and dielectric constant, the wherein testing standard of tensile strength are ISO 527-2, draw speed 50mm/
Min, the testing standard of dielectric constant is ASTM D150, and test result is referring to table 2.
Table 2 specific embodiment 1-4 and the test result of comparative example's 1-3 gained batten
Can be seen that compared to being not added with ceramic whiskers by the comparison of above-mentioned comparative example and specific embodiment
PP/PA composite, with the addition of the PP/PA/metal whisker composite of modified or unmodified ceramic whiskers
Dielectric constant values and tensile strength values are all higher, but only with the addition of unmodified ceramic whiskers its tensile strength of composite and
The lifting of dielectric constant performance is not as with the addition of through silane coupler modified ceramic whiskers.
The foregoing is only the preferred embodiments of the present invention.It should be pointed out that in the feelings without departing from the principle of the invention
Under condition, also can make some improvement and modification, be accordingly to be regarded as protection scope of the present invention.
Claims (7)
1. a kind of high dielectric property PP/PA/metal whisker composite it is characterised in that：Following including by weight
Each component：
Wherein said nylon be formed for monomer with caprolactam nylon resin, formed with hexamethylene diamine and adipic acid for monomer
Nylon resin, the nylon resin being formed for monomer with decanedioic acid and decamethylene diamine and nylon 6- nylon 1010-nylon66 fiber formed three
First nylon resin；
Wherein said bulking agent reaches 0.2～5.0% maleic anhydride inoculated polypropylene for maleic anhydride grafting ratio；
Wherein said modified ceramic matter whisker is carborundum through silane coupler surface modification, through silane coupler surface modification
Potassium titanate and the Alborex M 12 through silane coupler surface modification at least one.
2. high dielectric property PP/PA/metal whisker composite according to claim 1 it is characterised in that：Described change
Property ceramic whiskers are to prepare gained by following preparation methoies：(1) ceramic whiskers are placed at 120～130 DEG C and are dried 2
～3h removes absorption water and obtains drying of ceramic matter whisker；(2) take relatively dry ceramic whiskers weight/mass percentage composition be 0.8～
The silane coupler of 1.5% consumption, this silane coupler is mixed in 90～95 DEG C with gained drying of ceramic matter whisker in (1)
In deionized water, after heating and adopt the rotating speed of 900～1200r/min to stir 10～15min, divided by the way of centrifugation
From obtaining solid matter；(3) gained solid matter in (2) is dried at 100～110 DEG C and is placed in 60～65 DEG C again after 2～3h
Lower drying 12～18h, obtains modified ceramic matter whisker；Wherein said ceramic whiskers are in carborundum, potassium titanate and Alborex M 12
At least one.
3. high dielectric property PP/PA/metal whisker composite according to claim 2 it is characterised in that：Described silicon
Alkane coupling agent is gamma-aminopropyl-triethoxy-silane, γ-glycidyl ether oxygen propyl trimethoxy silicane and γ-(metering system
Acyl-oxygen) at least one in propyl trimethoxy silicane.
4. high dielectric property PP/PA/metal whisker composite according to claim 1 it is characterised in that：Described poly-
The melt flow rate (MFR) of propylene is HOPP or the COPP of 1～100g/10min.
5. high dielectric property PP/PA/metal whisker composite according to claim 1 it is characterised in that：Described heat
Stabilizer is phenols, amine, phosphorous acid esters, the compound species of half Hinered phenols, acryloyl group functional group and monothioester and cup
At least one in aromatic hydrocarbons.
6. high dielectric property PP/PA/metal whisker composite according to claim 1 it is characterised in that：Described plus
Work auxiliary agent is low molecule esters, metal soap, stearic acid are combined at least one in esters and amide-type.
7. the high dielectric property PP/PA/metal whisker composite described in any claim in a kind of claim 1 to 6
Preparation method it is characterised in that：Comprise the steps：(1) ceramic whiskers are placed at 120～130 DEG C and 2～3h is dried
Except absorption water obtains drying of ceramic matter whisker；(2) relatively dry ceramic whiskers weight/mass percentage composition is taken to be 0.8～1.5% consumption
Silane coupler, gained drying of ceramic matter whisker in this silane coupler and (1) is mixed in 90～95 DEG C of deionized water
In, after heating and adopt the rotating speed of 900～1200r/min to stir 10～15min, separated by the way of centrifugation and consolidated
Body material；(3) gained solid matter in (2) is dried to be placed in after 2～3h at 60～65 DEG C at 100～110 DEG C again and is dried 12
～18h, obtains modified ceramic matter whisker；Wherein said ceramic whiskers are at least in carborundum, potassium titanate and Alborex M 12
Kind；(4) by polypropylene, nylon, bulking agent, modified ceramic matter whisker, heat stabilizer and processing aid put into rotating speed be 600～
800r/min and temperature are that 23～25 DEG C of high-speed mixer for dry mixing 3～5min obtains pre-composition；(5) will be pre- for gained in (4)
Mixed thing is 40～45 through draw ratio:In 1 double screw extruder melting mixing dispersion after, extruded, cooling, pelletize obtain height
Dielectric properties PP/PA/metal whisker composite, the wherein temperature of double screw extruder are 190～240 DEG C.
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| CN201610735830.8A CN106380678A (en) | 2016-08-26 | 2016-08-26 | High dielectric property polypropylene/nylon/whisker composite material and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107163397A (en) * | 2017-07-04 | 2017-09-15 | 江苏金发科技新材料有限公司 | Conductive polypropylene/nylon composite materials and preparation method thereof |
| CN107189220A (en) * | 2017-07-04 | 2017-09-22 | 江苏金发科技新材料有限公司 | Antibiotic property PP/PA composite and preparation method thereof |
| CN107245190A (en) * | 2017-06-21 | 2017-10-13 | 安徽江淮汽车集团股份有限公司 | A kind of wear-resisting PP PA66 composites of antibacterial and preparation method thereof |
| CN109776939A (en) * | 2018-12-27 | 2019-05-21 | 会通新材料股份有限公司 | A kind of resistance to stifling PP composite material of self-lubricating and preparation method thereof |
| CN110964246A (en) * | 2019-09-29 | 2020-04-07 | 鞍钢集团矿业有限公司 | Sodium titanate whisker modified polypropylene composite material and preparation method thereof |
| CN112662076A (en) * | 2020-12-14 | 2021-04-16 | 武汉金发科技有限公司 | Polypropylene composite material and preparation method thereof |
| CN112940495A (en) * | 2020-12-31 | 2021-06-11 | 华南理工大学 | Nylon dielectric composite material with high resistance stability and preparation method and application thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107245190A (en) * | 2017-06-21 | 2017-10-13 | 安徽江淮汽车集团股份有限公司 | A kind of wear-resisting PP PA66 composites of antibacterial and preparation method thereof |
| CN107163397A (en) * | 2017-07-04 | 2017-09-15 | 江苏金发科技新材料有限公司 | Conductive polypropylene/nylon composite materials and preparation method thereof |
| CN107189220A (en) * | 2017-07-04 | 2017-09-22 | 江苏金发科技新材料有限公司 | Antibiotic property PP/PA composite and preparation method thereof |
| CN109776939A (en) * | 2018-12-27 | 2019-05-21 | 会通新材料股份有限公司 | A kind of resistance to stifling PP composite material of self-lubricating and preparation method thereof |
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| CN110964246A (en) * | 2019-09-29 | 2020-04-07 | 鞍钢集团矿业有限公司 | Sodium titanate whisker modified polypropylene composite material and preparation method thereof |
| CN112662076A (en) * | 2020-12-14 | 2021-04-16 | 武汉金发科技有限公司 | Polypropylene composite material and preparation method thereof |
| CN112940495A (en) * | 2020-12-31 | 2021-06-11 | 华南理工大学 | Nylon dielectric composite material with high resistance stability and preparation method and application thereof |
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Application publication date: 20170208 |