CN109627759A - A kind of PA66 reinforcing material and its preparation method and application - Google Patents
A kind of PA66 reinforcing material and its preparation method and application Download PDFInfo
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- CN109627759A CN109627759A CN201811627585.4A CN201811627585A CN109627759A CN 109627759 A CN109627759 A CN 109627759A CN 201811627585 A CN201811627585 A CN 201811627585A CN 109627759 A CN109627759 A CN 109627759A
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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
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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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
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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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
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
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Abstract
The present invention provides a kind of PA66 reinforcing materials and its preparation method and application.The PA66 reinforcing material includes the component of following parts by weight: 39-65 parts of PA66,5-10 parts and reinforcing fiber 30-50 parts of (vinyl POSS, MAH)-g-PP.The PA66 reinforcing material then is prepared with the method for PA66 and reinforcing fiber melt blending by first vinyl POSS being used to react generation (vinyl POSS, MAH)-g-PP with MAH-g-PP.PA66 reinforcing material provided by the invention heat resistance with higher and mechanical strength, lower dielectric constant and dielectric loss, can be used as the nanometer injected plastics material of electronic product.
Description
Technical field
The invention belongs to technical field of polymer composite materials, it is related to a kind of nanometer of injected plastics material, more particularly to a kind of
PA66 reinforcing material and its preparation method and application.
Background technique
Nanometer injected plastics material is that one kind can be compound by nanometer injection molding technology and the macromolecule of metal material good combination
Material is mainly used in the electronic products such as mobile phone, computer.The nanometer common resin of injected plastics material has PBT (poly terephthalic acid
Butanediol ester), PPS (polyphenylene sulfide), PA (polyamide) etc..Wherein, the temperature resistant grade of PBT is lower；Although PPS temperature resistant grade compared with
Height, but it is difficult to match colors, it is difficult to meet the needs of personalized color；Although PA has good heat-resisting and coloring, there is also
Dielectric constant and the higher disadvantage of dielectric loss.
Along with the development of electronic information technology, requirement of the electronic product for electromagnetic signal transmitance is higher and higher.5G
Epoch are coming, and comparing 4G with loss for the electromagnetic delay rate of electronic equipment has more harsh requirement.And vacuum from
The application of sub- electroplating technology also requires nanometer injected plastics material to have higher heat resistance.Therefore, receiving for heat-resisting, low dielectric is researched and developed
Development important in inhibiting of the rice injected plastics material to electronic product.
There are mainly two types of the methods for reducing high molecular material dielectric constant: first is that reducing the polarization of material by MOLECULE DESIGN
Rate；Second is that forming the nanomicroporous material containing the air gap.Second method is mostly to thereby result in material using foamed material
Comprehensive mechanical property is poor, it is difficult to satisfy the use demand.The first method then excessively polymer blended realization of multi-pass.
CN 107987525A disclose it is a kind of for nanometer injection molding semiaromatic polyamide composition composite material and its preparation side
Method is improved using semiaromatic polyamide composition and semiaromatic polyamide composition-long-chain fat polyamide compound as matrix resin
The heat resistance and cohesive force of nanometer injected plastics material, reduce water absorption rate, but do not improve to the dielectric properties of material.CN
105694447A discloses the NMT Amilan polyamide resin composition that one kind has LDS (laser direct forming) function, the resin group
Close object cohesive force with higher and lower shrinking percentage, and can laser direct forming, but be not related to changing for dielectric properties equally
Into.
Therefore, a kind of with compared with low-k and dielectric loss up for researching and developing in order to adapt to the requirement of 5G product
Nanometer injected plastics material.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of PA66 reinforcing material and its preparation side
Method and purposes.The PA66 reinforcing material simultaneously damage by heat resistance and mechanical strength with higher, lower dielectric constant and dielectric
Consumption, can be used as the nanometer injected plastics material of electronic product.
To achieve this purpose, the present invention adopts the following technical scheme:
In a first aspect, the present invention provides a kind of PA66 reinforcing material, the component including following parts by weight:
39-65 parts of PA66；
5-10 parts of-g-PP of (vinyl POSS, MAH)；
30-50 parts of reinforcing fiber.
It should be noted that heretofore described (vinyl POSS, MAH)-g-PP, which refers to, is grafted with vinyl POSS (cage
Shape silsesquioxane) and MAH (maleic anhydride) PP (polypropylene).
The present invention using PA66 (polyhexamethylene adipamide) as substrate, under specific ratio with (vinyl POSS,
MAH)-g-PP and reinforcing fiber cooperation, heat resistance with higher and machinery are strong simultaneously for the PA66 reinforcing material enabled to
Degree, lower dielectric constant and dielectric loss.
Substrate of the PA66 as nanometer injected plastics material has excellent mechanical property and hot property, the cohesive force with metal
It is higher；(vinyl POSS, MAH)-g-PP has the dielectric constant and dielectric loss for reducing PA66 reinforcing material, and improves heat-resisting
The effect of property and mechanical strength, when the content of (vinyl POSS, MAH)-g-PP is very few, then above-mentioned effect is unobvious, when it
When content is excessive, the improvement of PA66 reinforcing material dielectric properties is no longer obviously improved, but will affect the crystallization of PA66,
Decline (including mobile performance, mechanical property and hot property) so as to cause the comprehensive performance of PA66 reinforcing material.
In the present invention, the parts by weight of the PA66 can be 39 parts, 40 parts, 42 parts, 43 parts, 45 parts, 46 parts, 48 parts,
50 parts, 52 parts, 53 parts, 55 parts, 56 parts, 58 parts, 60 parts, 62 parts, 63 parts or 65 parts etc..
The parts by weight of (vinyl POSS, the MAH)-g-PP can be 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5
Part, 8 parts, 8.5 parts, 9 parts, 9.5 parts or 10 parts etc..
The parts by weight of the reinforcing fiber can be 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts,
38 parts, 39 parts, 40 parts, 41 parts, 42 parts, 43 parts, 44 parts, 45 parts, 46 parts, 47 parts, 48 parts, 49 parts or 50 parts etc..
As the preferred technical solution of the present invention, the vinyl POSS in (vinyl POSS, the MAH)-g-PP is eight
Vinyl POSS.
Preferably, the grafting rate of described (vinyl POSS, the MAH)-g-PP medium vinyl POSS is 3-5%；Such as it can be with
It is 3%, 3.2%, 3.5%, 3.8%, 4%, 4.2%, 4.5%, 4.8% or 5% etc..
As the preferred technical solution of the present invention, the reinforcing fiber is glass fibre.Glass fibre is to PA66 strengthening material
Material has humidification, and material bending intensity, bending modulus and impact strength decreased can be caused by reducing its dosage.
Preferably, the length of the glass fibre is 3-4mm；Such as can be 3mm, 3.1mm, 3..2mm, 3.3mm,
3.4mm, 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm or 4mm etc..
Preferably, the diameter of the glass fibre is 10-13 μm；Such as can be 10 μm, 10.5 μm, 11 μm, 11.5 μm,
12 μm, 12.5 μm or 13 μm etc..
As the preferred technical solution of the present invention, the PA66 reinforcing material further include 0.4-0.6 parts (such as 0.4 part,
0.42 part, 0.45 part, 0.48 part, 0.5 part, 0.52 part, 0.55 part, 0.58 part or 0.6 part etc.) antioxidant.
Preferably, the antioxidant by Hinered phenols antioxidant and phosphite ester antioxidant 2-3:1 in mass ratio (such as
2:1,2.2:1,2.3:1,2.5:1,2.6:1,2.8:1 or 3:1 etc.) composition.
Preferably, the Hinered phenols antioxidant is antioxidant 1010 (four [β-(3,5- di-tert-butyl-hydroxy phenyl)
Propionic acid] pentaerythritol ester).
Preferably, the phosphite ester antioxidant is irgasfos 168 (three (2,4- di-t-butyl) phenyl-phosphites).
As the preferred technical solution of the present invention, the PA66 reinforcing material further include 0.5-0.8 parts (such as 0.5 part,
0.52 part, 0.55 part, 0.58 part, 0.6 part, 0.62 part, 0.65 part, 0.68 part, 0.7 part, 0.72 part, 0.75 part, 0.78 part or
0.8 part etc.) lubricant.
Preferably, the lubricant is PETS (pentaerythritol stearate) or EBS (ethylene bis stearamide).
Second aspect, the present invention provide a kind of preparation method of above-mentioned PA66 reinforcing material, the preparation method is that:
By (vinyl POSS, MAH)-g-PP and PA66, optionally antioxidant and optionally mix lubricant, from twin-screw
The main spout of extruder is added, and reinforcing fiber is added from the side spout of the double screw extruder, melt blending obtains
PA66 reinforcing material.
As the preferred technical solution of the present invention, (the vinyl POSS, MAH)-g-PP's the preparation method comprises the following steps: by ethylene
Base POSS and initiator are scattered in organic solvent, are reacted in double screw extruder with MAH-g-PP, are obtained (vinyl
POSS, MAH)-g-PP.
Preferably, the vinyl POSS accounts for the 7-10% of the MAH-g-PP weight, for example, can be 7%, 7.2%,
7.5%, 7.8%, 8%, 8.2%, 8.5%, 8.8%, 9%, 9.2%, 9.5%, 9.8% or 10% etc..
Preferably, the initiator accounts for the 0.3-0.5% of the MAH-g-PP weight, such as can be 0.3%,
0.32%, 0.35%, 0.38%, 0.4%, 0.42%, 0.45%, 0.48% or 0.5% etc..
Preferably, the initiator is cumyl peroxide (DCP).
Preferably, the organic solvent is tetrahydrofuran.
Preferably, the preparation method of described (vinyl POSS, the MAH)-g-PP further includes that will account for the MAH-g-PP weight
0.15-0.3% (such as 0.15%, 0.18%, 0.2%, 0.22%, 0.23%, 0.25%, 0.26%, 0.28% or 0.3%
Deng) antioxidant B215 mixed with MAH-g-PP.
The main function that antioxidant B215 is added is to alleviate the degradation of MAH-g-PP during the reaction.
Preferably, the extrusion temperature for reacting the double screw extruder used is 185-200 DEG C, such as can be 185
DEG C, 188 DEG C, 190 DEG C, 192 DEG C, 193 DEG C, 195 DEG C, 196 DEG C, 198 DEG C or 200 DEG C etc.；Screw speed is 280-310r/min,
Such as can be 280r/min, 285r/min, 290r/min, 295r/min, 300r/min, 305r/min or 310r/min etc..
As the preferred technical solution of the present invention, the extrusion temperature of the double screw extruder that the melt blending uses for
280-300 DEG C, such as can be 280 DEG C, 282 DEG C, 283 DEG C, 285 DEG C, 286 DEG C, 288 DEG C, 290 DEG C, 292 DEG C, 293 DEG C, 295
DEG C, 296 DEG C, 298 DEG C or 300 DEG C etc.；Screw speed is 320-360r/min, for example, can be 320r/min, 325r/min,
330r/min, 335r/min, 340r/min, 345r/min, 350r/min, 355r/min or 360r/min etc..
As the preferred technical solution of the present invention, the preparation method includes the following steps:
(1) 100 parts by weight MAH-g-PP are mixed with 0.15-0.3 parts by weight antioxidant B215, from double screw extruder
Main spout is added, and 7-10 parts by weight of ethylene base POSS and 0.3-0.5 parts by weight initiator is dissolved in 70-100 parts by weight tetrahydro
It in furans, is added from the 4th area of double screw extruder, sets extrusion temperature as 185-200 DEG C, screw speed 280-310r/
Min is reacted while squeezing out, obtains (vinyl POSS, MAH)-g-PP；
(2) (vinyl POSS, the MAH)-g-PP for obtaining step (1) and PA66, antioxidant and mix lubricant, then
It is added from twin-screw extrusion owner's spout, reinforcing fiber is added from the side spout of the double screw extruder, and setting squeezes out
Temperature is 280-300 DEG C, screw speed 320-360r/min, obtains PA66 reinforcing material after extrusion.
The third aspect, the present invention provide a kind of purposes of above-mentioned PA66 reinforcing material, and the PA66 reinforcing material is used as electricity
The nanometer injected plastics material of sub- product.
Compared with prior art, the invention has the following advantages:
The present invention is cooperated under specific ratio using (vinyl POSS, MAH)-g-PP and other components, is obtained
PA66 reinforcing material heat resistance and mechanical strength with higher, lower dielectric constant and dielectric loss stretch simultaneously
Intensity is 146-190MPa, bending strength 225-280MPa, bending modulus 6600-13000MPa, impact strength 180-
280J/m, heat distortion temperature (HDT) are 225-270 DEG C, dielectric constant 2.9-3.2, dielectric loss factor 0.21-0.33,
It can be used as the nanometer injected plastics material of electronic product.
Specific embodiment
Below by specific embodiment to further illustrate the technical scheme of the present invention.Those skilled in the art should be bright
, the described embodiments are merely helpful in understanding the present invention, should not be regarded as a specific limitation of the invention.
The source of the raw material used in the embodiment of the present invention is as follows:
PA66: the EP158 of Zhejiang Hua Feng company；
MAH-g-PP: the logical KT-1 of Shenyang section, MAH grafting rate is 0.8%；
Glass fibre: the 995-13P of OWENS CORNING.
Embodiment 1
The present embodiment provides a kind of PA66 reinforcing material, the component including following parts by weight:
Wherein, the length of glass fibre is 3-4mm, and diameter is 10-13 μm.
Above-mentioned PA66 reinforcing material the preparation method is as follows:
(1) 100 parts by weight MAH-g-PP are mixed with 0.3 parts by weight antioxidant B215, is fed from the master of double screw extruder
Material mouth is added, and 10 parts by weight octavinyl-POSSs and 0.5 parts by weight initiator DCP are dissolved in 100 parts by weight tetrahydrofurans, from
4th area of double screw extruder is added, and sets extrusion temperature as 200 DEG C, screw speed 310r/min, while squeezing out
It is reacted, obtains (octavinyl-POSS, MAH)-g-PP；
(2) (octavinyl-POSS, MAH)-g-PP and PA66, antioxidant and the mix lubricant obtained step (1) is equal
It is even, it is added from the main spout of double screw extruder, glass fibre is added from side spout, sets extrusion temperature as 280 DEG C, spiral shell
Bar revolving speed is 320r/min, obtains PA66 reinforcing material after extrusion.
Embodiment 2
The present embodiment provides a kind of PA66 reinforcing material, the component including following parts by weight:
Wherein, the length of glass fibre is 3-4mm, and diameter is 10-13 μm.
Above-mentioned PA66 reinforcing material the preparation method is as follows:
(1) 100 parts by weight MAH-g-PP are mixed with 0.3 parts by weight antioxidant B215, is fed from the master of double screw extruder
Material mouth is added, and 10 parts by weight octavinyl-POSSs and 0.5 parts by weight initiator DCP are dissolved in 100 parts by weight tetrahydrofurans, from
4th area of double screw extruder is added, and sets extrusion temperature as 200 DEG C, screw speed 310r/min, while squeezing out
It is reacted, obtains (octavinyl-POSS, MAH)-g-PP；
(2) (octavinyl-POSS, MAH)-g-PP and PA66, antioxidant and the mix lubricant obtained step (1) is equal
It is even, it is added from the main spout of double screw extruder, glass fibre is added from side spout, sets extrusion temperature as 285 DEG C, spiral shell
Bar revolving speed is 330r/min, obtains PA66 reinforcing material after extrusion.
Embodiment 3
The present embodiment provides a kind of PA66 reinforcing material, the component including following parts by weight:
Wherein, the length of glass fibre is 3-4mm, and diameter is 10-13 μm.
Above-mentioned PA66 reinforcing material the preparation method is as follows:
(1) 100 parts by weight MAH-g-PP are mixed with 0.3 parts by weight antioxidant B215, is fed from the master of double screw extruder
Material mouth is added, and 10 parts by weight octavinyl-POSSs and 0.5 parts by weight initiator DCP are dissolved in 100 parts by weight tetrahydrofurans, from
4th area of double screw extruder is added, and sets extrusion temperature as 200 DEG C, screw speed 310r/min, while squeezing out
It is reacted, obtains (octavinyl-POSS, MAH)-g-PP；
(2) (octavinyl-POSS, MAH)-g-PP and PA66, antioxidant and the mix lubricant obtained step (1) is equal
It is even, it is added from the main spout of double screw extruder, glass fibre is added from side spout, sets extrusion temperature as 290 DEG C, spiral shell
Bar revolving speed is 340r/min, obtains PA66 reinforcing material after extrusion.
Embodiment 4
The present embodiment provides a kind of PA66 reinforcing material, the component including following parts by weight:
Wherein, the length of glass fibre is 3-4mm, and diameter is 10-13 μm.
Above-mentioned PA66 reinforcing material the preparation method is as follows:
(1) 100 parts by weight MAH-g-PP are mixed with 0.3 parts by weight antioxidant B215, is fed from the master of double screw extruder
Material mouth is added, and 10 parts by weight octavinyl-POSSs and 0.5 parts by weight initiator DCP are dissolved in 100 parts by weight tetrahydrofurans, from
4th area of double screw extruder is added, and sets extrusion temperature as 200 DEG C, screw speed 310r/min, while squeezing out
It is reacted, obtains (octavinyl-POSS, MAH)-g-PP；
(2) (octavinyl-POSS, MAH)-g-PP and PA66, antioxidant and the mix lubricant obtained step (1) is equal
It is even, it is added from the main spout of double screw extruder, glass fibre is added from side spout, sets extrusion temperature as 295 DEG C, spiral shell
Bar revolving speed is 350r/min, obtains PA66 reinforcing material after extrusion.
Embodiment 5
The present embodiment provides a kind of PA66 reinforcing material, the component including following parts by weight:
Wherein, the length of glass fibre is 3-4mm, and diameter is 10-13 μm.
Above-mentioned PA66 reinforcing material the preparation method is as follows:
(1) 100 parts by weight MAH-g-PP are mixed with 0.3 parts by weight antioxidant B215, is fed from the master of double screw extruder
Material mouth is added, and 10 parts by weight octavinyl-POSSs and 0.5 parts by weight initiator DCP are dissolved in 100 parts by weight tetrahydrofurans, from
4th area of double screw extruder is added, and sets extrusion temperature as 200 DEG C, screw speed 310r/min, while squeezing out
It is reacted, obtains (octavinyl-POSS, MAH)-g-PP；
(2) (octavinyl-POSS, MAH)-g-PP and PA66, antioxidant and the mix lubricant obtained step (1) is equal
It is even, it is added from the main spout of double screw extruder, glass fibre is added from side spout, sets extrusion temperature as 300 DEG C, spiral shell
Bar revolving speed is 360r/min, obtains PA66 reinforcing material after extrusion.
Embodiment 6
The present embodiment provides a kind of PA66 reinforcing material, the component including following parts by weight:
Wherein, the length of glass fibre is 3-4mm, and diameter is 10-13 μm.
Above-mentioned PA66 reinforcing material the preparation method is as follows:
(1) 100 parts by weight MAH-g-PP are mixed with 0.3 parts by weight antioxidant B215, is fed from the master of double screw extruder
Material mouth is added, and 7 parts by weight octavinyl-POSSs and 0.3 parts by weight initiator is dissolved in 70 parts by weight tetrahydrofurans, from double spiral shells
4th area of bar extruder is added, and sets extrusion temperature as 185 DEG C, screw speed 285r/min, carries out while squeezing out
Reaction, obtains (octavinyl-POSS, MAH)-g-PP；
(2) (octavinyl-POSS, MAH)-g-PP and PA66, antioxidant and the mix lubricant obtained step (1) is equal
It is even, it is added from the main spout of double screw extruder, glass fibre is added from side spout, sets extrusion temperature as 280 DEG C, spiral shell
Bar revolving speed is 320r/min, obtains PA66 reinforcing material after extrusion.
Embodiment 7
The present embodiment provides a kind of PA66 reinforcing material, the component including following parts by weight:
Wherein, the length of glass fibre is 3-4mm, and diameter is 10-13 μm.
Above-mentioned PA66 reinforcing material the preparation method is as follows:
(1) 100 parts by weight MAH-g-PP are mixed with 0.3 parts by weight antioxidant B215, is fed from the master of double screw extruder
Material mouth is added, and 8 parts by weight octavinyl-POSSs and 0.42 parts by weight initiator is dissolved in 80 parts by weight tetrahydrofurans, from double spiral shells
4th area of bar extruder is added, and sets extrusion temperature as 195 DEG C, screw speed 295r/min, carries out while squeezing out
Reaction, obtains (octavinyl-POSS, MAH)-g-PP；
(2) (octavinyl-POSS, MAH)-g-PP and PA66, antioxidant and the mix lubricant obtained step (1) is equal
It is even, it is added from the main spout of double screw extruder, glass fibre is added from side spout, sets extrusion temperature as 290 DEG C, spiral shell
Bar revolving speed is 325r/min, obtains PA66 reinforcing material after extrusion.
Embodiment 8
The present embodiment provides a kind of PA66 reinforcing material, the component including following parts by weight:
59 parts of PA66；
10 parts of-g-PP of (octavinyl-POSS, MAH)；
30 parts of glass fibre；
Wherein, the length of glass fibre is 3-4mm, and diameter is 10-13 μm.
Above-mentioned PA66 reinforcing material the preparation method is as follows:
(1) 100 parts by weight MAH-g-PP are mixed with 0.3 parts by weight antioxidant B215, is fed from the master of double screw extruder
Material mouth is added, and 10 parts by weight octavinyl-POSSs and 0.5 parts by weight initiator DCP are dissolved in 100 parts by weight tetrahydrofurans, from
4th area of double screw extruder is added, and sets extrusion temperature as 200 DEG C, screw speed 310r/min, while squeezing out
It is reacted, obtains (octavinyl-POSS, MAH)-g-PP；
(2) (octavinyl-POSS, MAH)-g-PP that step (1) obtains is uniformly mixed with PA66, from twin-screw extrusion
The main spout of machine is added, and glass fibre is added from side spout, sets extrusion temperature as 290 DEG C, screw speed 330r/
Min obtains PA66 reinforcing material after extrusion.
Comparative example 1
The difference from embodiment 1 is that the MAH-g-PP using equivalent replaces (octavinyl-POSS, MAH)-g-PP,
His component, dosage and preparation step are same as Example 1.
Comparative example 2
The difference from embodiment 1 is that the octavinyl-POSS using equivalent replaces (octavinyl-POSS, MAH)-g-
PP, other components, dosage and preparation step are same as Example 1.
Comparative example 3
Difference with embodiment 3 is that the parts by weight of (octavinyl-POSS, MAH)-g-PP are 13 parts, other components,
Dosage and preparation step are same as Example 3.
The performance of above-described embodiment 1-8 and comparative example 1-3 the PA66 reinforcing material provided is tested, testing standard and
As a result as shown in table 1 below:
Table 1
According to the data of table 1 it is found that PA66 reinforcing material provided by the invention while heat resistance with higher and machinery
Intensity, lower dielectric constant and dielectric loss, and good fluidity, it is easy to process, it can be used as the nanometer injection molding of electronic product
Material.When replacing (octavinyl-POSS, MAH)-g-PP using MAH-g-PP or octavinyl-POSS (comparative example 1), can
The heat resistance and mechanical degradation of PA66 reinforcing material are clearly resulted in, dielectric constant and dielectric loss increase；When (eight vinyl
POSS, MAH)-g-PP content it is excessive when (comparative example 3), the dielectric properties of obtained PA66 reinforcing material are compared to embodiment 3
It is not obviously improved, but mechanical property and heat resistance are decreased obviously.
The Applicant declares that the foregoing is merely a specific embodiment of the invention, but protection scope of the present invention not office
It is limited to this, it should be clear to those skilled in the art, any to belong to those skilled in the art and take off in the present invention
In the technical scope of dew, any changes or substitutions that can be easily thought of, and all of which fall within the scope of protection and disclosure of the present invention.
Claims (10)
1. a kind of PA66 reinforcing material, which is characterized in that the PA66 reinforcing material includes the component of following parts by weight:
39-65 parts of PA66；
5-10 parts of-g-PP of (vinyl POSS, MAH)；
30-50 parts of reinforcing fiber.
2. PA66 reinforcing material according to claim 1, which is characterized in that in (vinyl POSS, the MAH)-g-PP
Vinyl POSS be octavinyl-POSS；
Preferably, the grafting rate of described (vinyl POSS, the MAH)-g-PP medium vinyl POSS is 3-5%.
3. PA66 reinforcing material according to claim 1 or 2, which is characterized in that the reinforcing fiber is glass fibre；
Preferably, the length of the glass fibre is 3-4mm；
Preferably, the diameter of the glass fibre is 10-13 μm.
4. PA66 reinforcing material according to claim 1-3, which is characterized in that the PA66 reinforcing material also wraps
Include 0.4-0.6 parts of antioxidant；
Preferably, the antioxidant is made of Hinered phenols antioxidant and phosphite ester antioxidant 2-3:1 in mass ratio；
Preferably, the Hinered phenols antioxidant is antioxidant 1010；
Preferably, the phosphite ester antioxidant is irgasfos 168.
5. PA66 reinforcing material according to claim 1-4, which is characterized in that the PA66 reinforcing material also wraps
Include 0.5-0.8 parts of lubricants；
Preferably, the lubricant is PETS or EBS.
6. a kind of preparation method of PA66 reinforcing material as described in any one in claim 1-5, which is characterized in that the preparation
Method are as follows:
By (vinyl POSS, MAH)-g-PP and PA66, optionally antioxidant and optionally mix lubricant, from twin-screw extrusion
The main spout of machine is added, and reinforcing fiber is added from the side spout of the double screw extruder, melt blending obtains PA66
Reinforcing material.
7. preparation method according to claim 6, which is characterized in that the preparation of (vinyl POSS, the MAH)-g-PP
Method are as follows: disperse vinyl POSS and initiator in organic solvent, react, obtain with MAH-g-PP in double screw extruder
To (vinyl POSS, MAH)-g-PP；
Preferably, the vinyl POSS accounts for the 7-10% of the MAH-g-PP weight；
Preferably, the initiator accounts for the 0.3-0.5% of the MAH-g-PP weight；
Preferably, the initiator is cumyl peroxide；
Preferably, the organic solvent is tetrahydrofuran；
Preferably, the preparation method of described (vinyl POSS, the MAH)-g-PP further includes that will account for the MAH-g-PP weight 0.15-
0.3% antioxidant B215 is mixed with MAH-g-PP；
Preferably, the extrusion temperature of double screw extruder that uses of reacting is 185-200 DEG C, screw speed 280-
310r/min。
8. preparation method according to claim 6 or 7, which is characterized in that the twin-screw extrusion that the melt blending uses
The extrusion temperature of machine is 280-300 DEG C, screw speed 320-360r/min.
9. according to the described in any item preparation methods of claim 6-8, which is characterized in that the preparation method includes following step
It is rapid:
(1) 100 parts by weight MAH-g-PP are mixed with 0.15-0.3 parts by weight antioxidant B215, is fed from the master of double screw extruder
Material mouth is added, and 7-10 parts by weight of ethylene base POSS and 0.3-0.5 parts by weight initiator is dissolved in 70-100 parts by weight tetrahydrofuran
In, it is added from the 4th area of the double screw extruder, sets extrusion temperature as 185-200 DEG C, screw speed 280-310r/
Min is reacted while squeezing out, obtains (vinyl POSS, MAH)-g-PP；
(2) (vinyl POSS, the MAH)-g-PP for obtaining step (1) and PA66, antioxidant and mix lubricant, from twin-screw
The main spout of extruder is added, and reinforcing fiber is added from the side spout of the double screw extruder, sets extrusion temperature
It is 280-300 DEG C, screw speed 320-360r/min obtains PA66 reinforcing material after extrusion.
10. a kind of purposes of PA66 reinforcing material as described in any one in claim 1-5, which is characterized in that the PA66 increases
Strong material is used as the nanometer injected plastics material of electronic product.
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