CN105924967A - Polyetherimide-polycarbonate (PEI-PC) alloy and preparation method thereof - Google Patents
Polyetherimide-polycarbonate (PEI-PC) alloy and preparation method thereof Download PDFInfo
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- CN105924967A CN105924967A CN201610543157.8A CN201610543157A CN105924967A CN 105924967 A CN105924967 A CN 105924967A CN 201610543157 A CN201610543157 A CN 201610543157A CN 105924967 A CN105924967 A CN 105924967A
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- polyetherimide
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- pei
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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
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
-
- 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
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/53—Core-shell polymer
Abstract
The invention discloses a polyetherimide-polycarbonate (PEI-PC) alloy and a preparation method thereof, belonging to the field of engineering plastics. The alloy material comprises PEI, PC, a compatilizer and an aid. The alloy miscible blending technique is utilized to improve the interface compatibility between the PEI and PC and enhance the impact strength of PEI. The preparation method of the PEI-PC alloy is simple and easy to implement, lowers the production cost, and is suitable for industrial production.
Description
Technical field
The present invention relates to a kind of engineering plastics, be specifically related to a kind of Polyetherimide and polycarbonate alloy and system thereof
Preparation Method.
Technical background
Polyetherimide (it is called for short: PEI) be a kind of molecular structure amorphous polymer of containing imine linkage and ehter bond,
There is high temperature resistant and excellent dimensional stability, and high intensity, high rigidity, chemical resistance, fire-retardant, electric
Excellent performance.As a kind of special engineering plastics, can be widely applied to electronic apparatus, automobile, aircraft, aerospace,
The fields such as machinery, food industry and medical device.But it is relatively big to there is fragility in polyetherimide resin, and price is held high
Expensive problem.
Merlon (is called for short: be PC) a kind of amorphous, transparent thermoplastic polymer, have prominent impact
Intensity and creep resistant, good electric property and good surface smoothness, moderate, but PC deposits
High to notch sensitivity, high temperature facile hydrolysis, poor solvent resistance, the shortcomings such as coefficient of friction is big.
PEI Yu PC is made plastic alloy, not only can keep the mechanical performance of both excellences, high temperature performance,
Electric property, surface smoothness, the problem further improving the fragility of PEI, reduces the cost of PEI engineering plastics.
Although both are amorphous polymer, but poor compatibility, alloying difficulty.Chinese patent CN103951956.A
Having in mind from PEI/PC thin film, using bisoxazoline and/or isocyanates is that compatilizer is prepared for PEI/PC alloy
Thin film, regrettably bisoxazoline is expensive.The present invention uses a kind of cheap, have can and PEI,
The methyl methacrylate of-COOH ,-OH ,-the NH ,-NH2 radical reaction in PC molecule and organosilicon group
The Copolymerization activity group core/shell type polymer become, and bisphenol A modified organic siliconresin, bisphenol-A therein
Structure and PEI, there is similar compatibility effect, improve between PEI and PC in the similar structures in PC molecule
The compatibility, is prepared for injection grade PEI/PC alloy
Summary of the invention
1. invention to solve the technical problem that
The highest for PEI with the PC compatibility in prior art, the problems such as alloying is difficult, the present invention carries
For a kind of Polyetherimide (PEI) and Merlon (PC) alloy and preparation method thereof, improve PEI and
PC interface compatibility, the alloy of preparation has good mechanical performance, impact resistance, fire resistance, table
Face fineness.Alloy uses equidirectional parallel double-screw extruder blending technology to manufacture simultaneously, simple, the suitableeest
Close industrialized production.
2. technical scheme
A kind of Polyetherimide and polycarbonate alloy, include following components in terms of parts by weight:
34～57 parts of Merlon (PC), 34～57 parts of Polyetherimide (PEI), 3～15 parts of compatilizer (methyl-prop
The Copolymerization activity radical polymerisation thing of e pioic acid methyl ester and organosilicon composition or bisphenol type epoxy modified organic silicon tree
Fat)；1 part of auxiliary agent.
Preferably, the relative molecular mass of Merlon is 20,000-3.5 ten thousand；Preferably, Polyetherimide is husky
Uncle basis ULTEM1000 virgin resin；
Compatilizer is methyl methacrylate with the Copolymerization activity radical polymerisation thing of organosilicon composition (hereinafter referred to as
Compatilizer 1#), one in bisphenol type epoxy modified organic silicone resin (hereinafter referred to as compatilizer 2#) or
Multiple mixture.
Auxiliary agent is Nanjing dimerization work ESCNOXS-9229 type antioxidant and molecular weight 700,000-75 ten thousand silicone powder
The mixture of 1:1 ratio.
A kind of Polyetherimide and the preparation method of polycarbonate alloy, the steps include:
(1) get the raw materials ready by following components
By 34～57 parts of Merlon (PC) and 34～57 parts of Polyetherimide (PEI), dry under the conditions of 105 DEG C
Dry 4 hours, 3～15 parts of compatilizers, 1 part of auxiliary agent；
(2) get the raw materials ready above-mentioned, proceed to high speed mixer is pre-mixed uniformly, melted crowded through double screw extruder
Go out, pelletizing and being dried, make Polyetherimide (PEI) and Merlon (PC) alloy material；Described double
Screw extruder one to nine district processing temperature be respectively 270 DEG C, 290 DEG C, 310 DEG C, 310 DEG C, 290 DEG C, 285 DEG C,
280 DEG C, 280 DEG C and 290 DEG C, cross-head temperature is 300 DEG C, and vacuum is-0.08MPa.
3. beneficial effect:
The present invention by utilize in the presence of compatilizer twin-screw reactive extrude blending technology, make PEI, PC,
There is chemical reaction between compatilizer three, form the stability structure of chemical bonding.Wherein compatilizer 1# is
A kind of nucleocapsid structure polymer, its core is organosilicon/acrylic acid, and shell is methyl methacrylate, can with-OH,
-COOH、-NH、-NH2Deng radical reaction, improve the compatibility between PC, PEI.Compatilizer 2# is also
Containing organosilicon and epoxide group, equally react, simultaneously in bisphenol A epoxide resin with polar group
There is similar compatibility effect in the similar structures in bis-phenol structure and PC and PEI molecule, improve PC Yu PEI it
Between the compatibility, obtain the alloying material of excellent performance.
The present invention uses response type extruding technology, it is simple to industrialized production.
Detailed description of the invention
Embodiment 1
48 parts of PEI and 48 parts of PC are dried 4 hours under the conditions of 105 DEG C, and 3 parts of compatilizer 1# (first
The Copolymerization activity radical polymerisation thing of base acrylic acid methyl ester. and organosilicon composition), 1 part of auxiliary agent in batch mixer in advance
Mix homogeneously, proceeds to loading hopper, melt extrude through double screw extruder, pelletizing, be dried, make polyetherimide
Amine (PEI) and Merlon (PC) alloy material.Described double screw extruder one to nine district processing temperature is divided
It is not 270 DEG C, 290 DEG C, 310 DEG C, 310 DEG C, 290 DEG C, 285 DEG C, 280 DEG C, 280 DEG C and 290 DEG C, squeezes
Going out machine head temperature is 300 DEG C, and vacuum is-0.08MPa.Wherein the relative molecular mass of Merlon is 2.4
Ten thousand；Polyetherimide is husky uncle basis ULTEM1000 virgin resin, and auxiliary agent is the poly-Chemical Co., Ltd. in Nanjing
ESCNOXS-9229 type antioxidant and molecular weight 720,000 silicone powder are according to the mixture of quality 1:1.
Embodiment 2
47 parts of PEI and 47 parts of PC are dried 4 hours under the conditions of 105 DEG C, and 5 parts of compatilizer 1# (first
The Copolymerization activity radical polymerisation thing that base acrylic acid methyl ester. forms with organosilicon), 1 part of auxiliary agent, pre-in batch mixer
First mix homogeneously, proceeds to loading hopper, melt extrudes through double screw extruder, pelletizing, is dried, makes polyethers acyl
Imines (PEI) and Merlon (PC) alloy material.Described double screw extruder one to nine district processing temperature
It is respectively 270 DEG C, 290 DEG C, 310 DEG C, 310 DEG C, 290 DEG C, 285 DEG C, 280 DEG C, 280 DEG C and 290 DEG C,
Cross-head temperature is 300 DEG C, and vacuum is-0.08MPa.Wherein the relative molecular mass of Merlon is
2.5 ten thousand；Polyetherimide is for being husky uncle basis ULTEM1000 virgin resin, and auxiliary agent is Nanjing dimerization work
ESCNOXS-9229 type antioxidant and molecular weight 720,000 silicone powder are according to the mixture of quality 1:1.
Embodiment 3
PEI 45.5 parts and PC45.5 part are dried 4 hours under the conditions of 105 DEG C, and 8 parts of compatilizer 1# (first
The Copolymerization activity radical polymerisation thing that base acrylic acid methyl ester. forms with organosilicon) and 1 part of auxiliary agent, pre-in batch mixer
First mix homogeneously, proceeds to loading hopper, melt extrudes through double screw extruder, pelletizing, is dried, makes polyethers acyl
Imines (PEI) and Merlon (PC) alloy material.Described double screw extruder one to nine district processing temperature
It is respectively 270 DEG C, 290 DEG C, 310 DEG C, 310 DEG C, 290 DEG C, 285 DEG C, 280 DEG C, 280 DEG C and 290 DEG C,
Cross-head temperature is 300 DEG C, and vacuum is-0.08MPa；Wherein the relative molecular mass of Merlon is
3.5 ten thousand；Polyetherimide is for being husky uncle basis ULTEM1000 virgin resin, and auxiliary agent is Nanjing dimerization work
ESCNOXS-9229 type antioxidant and molecular weight 750,000 silicone powder are according to the mixture of quality 1:1.
Embodiment 4
45.5 parts of PEI and 45.5 parts of PC are dried 4 hours under the conditions of 105 DEG C, and 8 parts of compatilizer 2#
[epoxy modified silicone resin, epoxide number 0.03 (eq/100g)], 1 part of auxiliary agent is pre-mixed in batch mixer
Uniformly, proceed to loading hopper, melt extrude through double screw extruder, pelletizing, be dried, make Polyetherimide (PEI)
With Merlon (PC) alloy material.Described double screw extruder one to nine district processing temperature be respectively 270 DEG C,
290 DEG C, 310 DEG C, 310 DEG C, 290 DEG C, 285 DEG C, 280 DEG C, 280 DEG C and 290 DEG C, cross-head temperature
Degree is 300 DEG C, and vacuum is-0.08MPa；Wherein the relative molecular mass of Merlon is 2.5 ten thousand；Polyethers
Acid imide is for being husky uncle basis ULTEM1000 virgin resin, and auxiliary agent is Nanjing dimerization work ESCNOXS-9229
Type antioxidant and molecular weight 720,000 silicone powder are according to the mixture of quality 1:1.
Embodiment 5
44.5 parts of PEI and 44.5 parts of PC are dried 4 hours under the conditions of 105 DEG C, and 10 parts of compatilizer 2#
[epoxy modified silicone resin, epoxide number 0.05 (eq/100g)] and 1 part of auxiliary agent mix in batch mixer in advance
Close uniformly, proceed to loading hopper, melt extrude through double screw extruder, pelletizing, be dried, make Polyetherimide
(PEI) with Merlon (PC) alloy material.Described double screw extruder one to nine district processing temperature is respectively
It is 270 DEG C, 290 DEG C, 310 DEG C, 310 DEG C, 290 DEG C, 285 DEG C, 280 DEG C, 280 DEG C and 290 DEG C, extrusion
Machine head temperature is 300 DEG C, and vacuum is-0.08MPa；Wherein the relative molecular mass of Merlon is 20,000；
Polyetherimide is for being husky uncle basis ULTEM1000 virgin resin, and auxiliary agent is Nanjing dimerization work
ESCNOXS-9229 type antioxidant and molecular weight 700,000 silicone powder are according to the mixture of quality 1:1.
Embodiment 6
42 parts of PEI and 42 parts of PC are dried 4 hours under the conditions of 105 DEG C, and 15 parts of compatilizer 1#, 1
Part auxiliary agent is pre-mixed uniformly in batch mixer, proceeds to loading hopper, melt extrude through double screw extruder, pelletizing,
It is dried, makes Polyetherimide (PEI) and Merlon (PC) alloy material.Described double screw extruder
One to nine district's processing temperatures be respectively 270 DEG C, 290 DEG C, 310 DEG C, 310 DEG C, 290 DEG C, 285 DEG C, 280 DEG C,
280 DEG C and 290 DEG C, cross-head temperature is 300 DEG C, and vacuum is-0.08MPa；Wherein Merlon
Relative molecular mass be 30,000；Polyetherimide is for being husky uncle basis ULTEM1000 virgin resin, and auxiliary agent is
Nanjing dimerization work ESCNOXS-9229 type antioxidant and molecular weight 720,000 silicone powder are according to quality 1:1
Mixture.
Embodiment 7
57 parts of PEI and 34 parts of PC are dried 4 hours under the conditions of 105 DEG C, and 8 parts of compatilizer 1#, help
Agent 1 part is pre-mixed uniformly in batch mixer, proceeds to loading hopper, melt extrude through double screw extruder, pelletizing,
It is dried, makes Polyetherimide (PEI) and Merlon (PC) alloy material.Described double screw extruder
One to nine district's processing temperatures be respectively 270 DEG C, 290 DEG C, 310 DEG C, 310 DEG C, 290 DEG C, 285 DEG C, 280 DEG C,
280 DEG C and 290 DEG C, cross-head temperature is 300 DEG C, and vacuum is-0.08MPa；Wherein Merlon
Relative molecular mass be 20,000；Polyetherimide is for being husky uncle basis ULTEM1000 virgin resin, and auxiliary agent is
Nanjing dimerization work ESCNOXS-9229 type antioxidant and molecular weight 700,000 silicone powder mixing according to quality 1:1
Compound.
Embodiment 8
34 parts of PEI and 57 parts of PC are dried 4 hours under the conditions of 105 DEG C, and 8 parts of compatilizer 1#, help
Agent 1 part is pre-mixed uniformly in batch mixer, proceeds to loading hopper, melt extrude through double screw extruder, pelletizing,
It is dried, makes Polyetherimide (PEI) and Merlon (PC) alloy material.Described double screw extruder
One to nine district's processing temperatures be respectively 270 DEG C, 290 DEG C, 310 DEG C, 310 DEG C, 290 DEG C, 285 DEG C, 280 DEG C,
280 DEG C and 290 DEG C, cross-head temperature is 300 DEG C, and vacuum is-0.08MPa, wherein Merlon
Relative molecular mass be 20,000；Polyetherimide is for being husky uncle basis ULTEM1000 virgin resin, and auxiliary agent is
Nanjing dimerization work ESCNOXS-9229 type antioxidant and molecular weight 700,000 silicone powder mixing according to quality 1:1
Compound.
Embodiment 9
34 parts of PEI and 57 parts of PC are dried 4 hours under the conditions of 105 DEG C, and 10 parts of compatilizer 2#[rings
Oxygen modified organic silicone resin, epoxide number 0.08 (eq/100g)] and 1 part of auxiliary agent be pre-mixed in batch mixer all
Even, proceed to loading hopper, melt extrude through double screw extruder, pelletizing, be dried, make Polyetherimide (PEI)
With Merlon (PC) alloy material.Described double screw extruder one to nine district processing temperature be respectively 270 DEG C,
290 DEG C, 310 DEG C, 310 DEG C, 290 DEG C, 285 DEG C, 280 DEG C, 280 DEG C and 290 DEG C, cross-head temperature
Degree is 300 DEG C, and vacuum is-0.08MPa；Wherein the relative molecular mass of Merlon is 20,000；Polyethers acyl
Imines is for being husky uncle basis ULTEM1000 virgin resin, and auxiliary agent is Nanjing dimerization work ESCNOXS-9229
Type antioxidant and molecular weight 700,000 silicone powder are according to the mixture of quality 1:1.
Comparative example
By 49.5 parts of PEI, 49.5 parts of PC, 1 part of auxiliary agent is pre-mixed uniformly in batch mixer, proceeds to charging
Bucket, melt extrudes through double screw extruder, pelletizing, is dried, make Polyetherimide (PEI) and poly-carbonic acid
Ester (PC) alloy material.It is-0.08 that described double screw extruder one to nine district processing temperature is respectively vacuum
MPa.270 DEG C, 290 DEG C, 310 DEG C, 310 DEG C, 290 DEG C, 285 DEG C, 280 DEG C, 280 DEG C and 290 DEG C,
Extrusion degree is machine head temperature 300 DEG C, and vacuum is-0.08.Wherein the relative molecular mass of Merlon is 2
Ten thousand；Polyetherimide is for being husky uncle basis ULTEM1000 virgin resin, and auxiliary agent is Nanjing dimerization work
ESCNOXS-9229 type antioxidant and molecular weight 700,000 silicone powder are according to the mixture of quality 1:1.
Experimental result
To begin a project according to hot strength ISO527, bending strength ISO178, bending modulus ISO178, cantilever
The testing standard of beam notch impact strength ISO180, fire resistance is tested according to UL94 standard testing.
Can be seen that PEI accounting increases from above performance, alloy tensile intensity increases, and impact strength reduces.When
When nucleocapsid structure Its Compatibilizing Technology 1# interpolation mark reaches 8 parts, the combination property of material reaches optimum.Should
Material is applicable to manufacture top-grade instrument shell, phone housing and charger case etc..
Claims (8)
1. Polyetherimide and a polycarbonate alloy, includes following components in terms of parts by weight:
34～57 parts of Merlon；34～57 parts of Polyetherimide, compatilizer 3～15 parts；1 part of auxiliary agent；Wherein
Compatilizer is the Copolymerization activity group core-shell polymers of methyl methacrylate and organosilicon composition, or bisphenol-A
Type epoxy modified silicone resin.
Polyetherimide the most according to claim 1 and polycarbonate alloy, it is characterised in that: described poly-carbon
The relative molecular mass of acid esters is 20,000-3.5 ten thousand.
Polyetherimide the most according to claim 1 and 2 and polycarbonate alloy, it is characterised in that: described
Polyetherimide is husky uncle basis ULTEM1000 virgin resin.
Polyetherimide the most according to claim 1 and 2 and polycarbonate alloy, it is characterised in that: described
Auxiliary agent be Nanjing dimerization work ESCNOXS-9229 type antioxidant and molecular weight be 700,000-75 ten thousand silicone powder by
Mixture according to quality 1:1 ratio.
Polyetherimide the most according to claim 1 and polycarbonate alloy, it is characterised in that: described bis-phenol
The epoxide number of A type epoxy modified silicone resin is 0.03-0.08.
6. Polyetherimide and a preparation method for polycarbonate alloy, the steps include:
(1) get the raw materials ready by following components
34～57 parts of Merlon, 34～57 parts of Polyetherimide, 3～15 parts of compatilizers, 1 part of auxiliary agent；
(2) above-mentioned getting the raw materials ready is pre-mixed uniformly in high speed mixer, proceeds to loading hopper, through twin-screw extrusion
Machine melt extrudes, pelletizing, be dried, make Polyetherimide and Polycarbonate alloy material；Described twin screw squeezes
Go out machine one to nine district processing temperature be respectively 270 DEG C, 290 DEG C, 310 DEG C, 310 DEG C, 290 DEG C, 285 DEG C,
280 DEG C, 280 DEG C and 290 DEG C, cross-head temperature is 300 DEG C, and vacuum is-0.08MPa.
Preparation method the most according to claim 6, it is characterised in that: described compatilizer is methyl methacrylate
The Copolymerization activity radical polymerisation thing of ester and organosilicon composition or bisphenol type epoxy modified organic silicone resin；Institute
The relative molecular mass of the Merlon stated is 20,000-3.5 ten thousand；Described Polyetherimide is husky uncle basis UL
TEM1000 virgin resin；Described auxiliary agent is Nanjing dimerization work ESCNOXS-9229 type antioxidant and molecule
Measure 700,000-75 ten thousand silicone powder mixture according to quality 1:1 ratio.
8. according to the preparation method described in claim 6 or 7, it is characterised in that: compatilizer is methyl methacrylate
It it is 8 parts with the Copolymerization activity radical polymerisation thing of organosilicon composition.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057352A (en) * | 2017-05-16 | 2017-08-18 | 扬中市中兴塑料配件厂 | A kind of preparation method of PEI composite guide sleeve |
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| CN107057352A (en) * | 2017-05-16 | 2017-08-18 | 扬中市中兴塑料配件厂 | A kind of preparation method of PEI composite guide sleeve |
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