CN109627731A - A kind of low temperature resistant PC composite material and preparation method - Google Patents
A kind of low temperature resistant PC composite material and preparation method Download PDFInfo
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- CN109627731A CN109627731A CN201811486826.8A CN201811486826A CN109627731A CN 109627731 A CN109627731 A CN 109627731A CN 201811486826 A CN201811486826 A CN 201811486826A CN 109627731 A CN109627731 A CN 109627731A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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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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- 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
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Abstract
The present invention provides a kind of low temperature resistant PC composite material and preparation method, is related to PC composites processing technology field.PC substrate 86%~91%, compatilizer 6%~8%, toughener 1%~2%, high glue powder 2%~4%, antioxidant 0.3%~0.5%, lubricant 0.3%~0.5%, fire retardant 0.2%~0.3%, anti-dripping agent 0.2%~0.4%.Preparation method specifically include that PC base material treatment, raw material be stirred, pelletizer default processing, extruding pelletization.The present invention overcomes the deficiencies in the prior art, greatly improve the cold tolerance of PC product, it effectively prevent the embrittlement phenomena of PC product at low ambient temperatures, the toughness and shock resistance of product are promoted simultaneously, meet the outdoor adaptation requirement under low temperature environment, and simple production process, it is low in cost, it is suitble to promote production.
Description
Technical field
The present invention relates to PC composites processing technology fields, and in particular to a kind of low temperature resistant PC composite material and its preparation
Method.
Background technique
A kind of thermoplastic engineering plastic of high molecular polymerization of polycarbonate (PC), molecular weight distribution is very vast, excellent
Comprehensive performance, has that impact strength height, creep resistant, good stability of the dimension, heat-resisting, transparent, dielectric properties are good etc., is answered extensively
With.And PC is in high molecular polymer, polymer molecular weight is bigger, and molecular chain structure is bigger, molecule interchain active force and twines
Knot degree increases, and low temperature tolerance ability is stronger；Polymer molecular weight is small, and molecular chain structure is small, and polymer molecular weight distribution is wide, and low point
Son amount ingredient is bigger, and low temperature tolerance ability is weaker, and microcosmic tearing easy to form causes molecular chain rupture, product is caused to crack, seriously
Constrain the application of PC alloy material.
The material of communication shell equipment is mostly polycarbonate, and in the northern China regional use process such as high and cold, is held
The low-temperature embrittleness phenomenon easily occurred, and communication shell is a kind of communication equipment used outdoors throughout the year, after high temperature solarization,
It drenches with rain, cryogenic freezing, ultraviolet radiation, use environment is very severe, so embrittlement situation is particularly acute.Currently, solving PC
It is the problem of material low temperature resistant cracking, main by modified method, to solve subzero 40 DEG C of PC material to subzero 60 DEG C of use
Brittle fracture will not be generated in environment, common method is that compatilizer, antioxidant, toughener etc. are added in PC material to solve
Certainly, but effect is not very ideal.
Summary of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of low temperature resistant PC composite material and preparation method, greatly mention
The high cold tolerance of PC product, effectively prevent the embrittlement phenomena of PC product at low ambient temperatures, while promoting the toughness of product
And shock resistance, meet the outdoor adaptation requirement under low temperature environment, and simple production process, it is low in cost, it is suitble to promote life
It produces.
In order to achieve the above object, technical solution of the present invention is achieved by the following technical programs:
A kind of low temperature resistant PC composite material, the PC composite material include following weight percent material composition: PC substrate
86%~91%, compatilizer 6%~8%, toughener 1%~2%, high glue powder 2%~4%, antioxidant 0.3%~0.5%, profit
Lubrication prescription 0.3%~0.5%, fire retardant 0.2%~0.3%, anti-dripping agent 0.2%~0.4%.
Preferably, the PC substrate is middle and high viscosity PC substrate, and melt index is the polycarbonate of 10-25g/10min,
I.e. PC substrate flowing velocity is 10-25g/10min.
Further, the compatilizer is that the core-shell structure macromolecule of methyl methacrylate-butadiene-styrene class is total
Polymers, preferably MBS-2690, MBS-521 type products.
Further, the toughener is ethylene, acrylate and acrylic acid shrink ester three obtained by high-pressure polymerization process
Membered copolymer, preferably AX-8900, EMA-PTW type products.
Further, the high glue powder is styrene-acrylonitrile-butadiene rubber core-shell polymers, gel content 60%
Left and right, preferably HR-181, DPT802 type products.
Further, the antioxidant be Hinered phenols antioxidant and phosphite ester antioxidant compound, preferably 1076
With the compound of 412S antioxidant type product, compounding weight ratio is 3:1.
Further, the lubricant is alkyd esters high-molecular compound, preferably PETS, EBF, EBG type products.
Further, the fire retardant be Sulfonates fire retardant or silicone based flame retardant, preferably KSS-FR, FR-2025,
BC-58, RDT-7 type products.
Further, the anti-dripping agent is 400 ten thousand to 500 ten thousand modified Teflon class anti-dripping agent of molecular weight, preferably
AD541, FS-200 type products.
The preparation method of low temperature resistant PC composite material the following steps are included:
(1) first PC substrate is added in batch mixer, the diffusing oil of 200ml or so is added, plastics are with the mixing speed of 50r/min
Degree stirs 5-8min, is sufficiently mixed diffusing oil in PC substrate uniformly；
(2) again by compatilizer, toughener, fire retardant, antioxidant and each processing aid investment PC of anti-dripping agent, plastics are stirred
The speed of machine 50r/min is mixed, 10-15min is stirred, is being dispersed in its various auxiliary agent in PC, mixed base can be obtained
Material；
(3) the default processing of pelletizer: being divided into ten humidity provinces for the grain forming machine barrel temperature of pelletizer, specific each area
Temperature control an are as follows: area: 200-225 DEG C, 2nd area: 220-250 DEG C, 3rd area: 240-255 DEG C, 4th area: 230-270 DEG C, 5th area:
250-275 DEG C, 6th area: 230-270 DEG C, 7th area: 200-220 DEG C, 8th area: 200-225 DEG C, 9th area: 210-230 DEG C, head:
235-250 DEG C, and extrusion pressure is set as 6.0-10.0Mpa；
(4) extruding pelletization: the mixed resin being stirred is added in the above-mentioned pelletizer preset, and processing temperature control exists
It between 200~275 DEG C, reels off raw silk from cocoons after extrusion, crosses cooling water, air-dried, pelletizing, is uniform resistance to low to get arriving into cylinder mixing is mixed greatly
Warm PC composite material.
The present invention provides a kind of low temperature resistant PC composite material and preparation method, and advantage is compared with prior art:
(1) by carrying out chain extension, modification to PC, macromolecular link, low-temperature resistant polycarbonate composite material, subzero are formed
When 60 DEG C of low temperature, the acrylate as core-shell structure is unchanged as glassy state, still has excellent cryogenic property.Keeping original
While PC modified material physical property and chemical property, additionally it is possible to significantly improve material at low temperature stage shock resistance, improve
Cold tolerance fully meets China in the application demand of northern cold region communication shell material.
(2) present invention addition high glue powder can assist compatilizer to improve low-temperature stability, be easy to product processing, reduce formula
Cost, and lubricant and many kinds of substance is cooperated to make to be easy demoulding in process of producing product during the preparation process, the proportion of goods damageds are low.
(3) present invention is granulated using multi-section partition temperature degree product, and product internal stress is effectively reduced, and enhancing product is tough
Property, and product stability is promoted, it is suitble to produce and use extensively.
Specific embodiment
Embodiment 1:
A kind of low temperature resistant PC composite material, the PC composite material include following weight percent material composition: PC substrate
86%, compatilizer 6%, toughener 1%, high glue powder 2%, antioxidant 0.3%, lubricant 0.3%, fire retardant 0.2%, anti-dripping melt
Agent 0.2%.
Wherein, the PC substrate is middle and high viscosity PC substrate, and melt index is the polycarbonate of 10-25g/10min, i.e.,
PC substrate flowing velocity is 10-25g/10min；The compatilizer is the shell of methyl methacrylate-butadiene-styrene class
Nuclear structure high-molecular copolymer；The toughener is ethylene obtained by high-pressure polymerization process, and acrylate and acrylic acid shrink
Ester terpolymer；The high glue powder is styrene-acrylonitrile-butadiene rubber core-shell polymers, and gel content 60% is left
It is right；The antioxidant is that compound weight ratio with the compound of phosphite ester antioxidant be 3:1 to Hinered phenols antioxidant；The profit
Lubrication prescription is alkyd esters high-molecular compound；The fire retardant is Sulfonates fire retardant or silicone based flame retardant；It is described anti-
Dripping agent is 400 ten thousand to 500 ten thousand modified Teflon class anti-dripping agent of molecular weight.
The preparation method of low temperature resistant PC composite material the following steps are included:
(1) first PC substrate is added in batch mixer, the diffusing oil of 200ml or so is added, plastics are with the mixing speed of 50r/min
Degree stirs 5-8min, is sufficiently mixed diffusing oil in PC substrate uniformly；
(2) again by compatilizer, toughener, fire retardant, antioxidant and each processing aid investment PC of anti-dripping agent, plastics are stirred
The speed of machine 50r/min is mixed, 10-15min is stirred, is being dispersed in its various auxiliary agent in PC, mixed base can be obtained
Material；
(3) the default processing of pelletizer: being divided into ten humidity provinces for the grain forming machine barrel temperature of pelletizer, specific each area
Temperature control an are as follows: area: 200-225 DEG C, 2nd area: 220-250 DEG C, 3rd area: 240-255 DEG C, 4th area: 230-270 DEG C, 5th area:
250-275 DEG C, 6th area: 230-270 DEG C, 7th area: 200-220 DEG C, 8th area: 200-225 DEG C, 9th area: 210-230 DEG C, head:
235-250 DEG C, and extrusion pressure is set as 6.0-10.0Mpa；
(4) extruding pelletization: the mixed resin being stirred is added in the above-mentioned pelletizer preset, and processing temperature control exists
It between 200~275 DEG C, reels off raw silk from cocoons after extrusion, crosses cooling water, air-dried, pelletizing, is uniform resistance to low to get arriving into cylinder mixing is mixed greatly
Warm PC composite material.
Embodiment 2:
A kind of low temperature resistant PC composite material, the PC composite material include following weight percent material composition: PC substrate
91%, compatilizer 8%, toughener 2%, high glue powder 4%, antioxidant 0.5%, lubricant 0.5%, fire retardant 0.3%, anti-dripping melt
Agent 0.4%.
Wherein, the PC substrate is middle and high viscosity PC substrate, and melt index is the polycarbonate of 10-25g/10min, i.e.,
PC substrate flowing velocity is 10-25g/10min；The compatilizer is the shell of methyl methacrylate-butadiene-styrene class
Nuclear structure high-molecular copolymer；The toughener is ethylene obtained by high-pressure polymerization process, and acrylate and acrylic acid shrink
Ester terpolymer；The high glue powder is styrene-acrylonitrile-butadiene rubber core-shell polymers, and gel content 60% is left
It is right；The antioxidant is that compound weight ratio with the compound of phosphite ester antioxidant be 3:1 to Hinered phenols antioxidant；The profit
Lubrication prescription is alkyd esters high-molecular compound；The fire retardant is Sulfonates fire retardant or silicone based flame retardant；It is described anti-
Dripping agent is 400 ten thousand to 500 ten thousand modified Teflon class anti-dripping agent of molecular weight.
The preparation method of the low temperature resistant PC composite material the following steps are included:
(1) first PC substrate is added in batch mixer, the diffusing oil of 200ml or so is added, plastics are with the mixing speed of 50r/min
Degree stirs 5-8min, is sufficiently mixed diffusing oil in PC substrate uniformly；
(2) again by compatilizer, toughener, fire retardant, antioxidant and each processing aid investment PC of anti-dripping agent, plastics are stirred
The speed of machine 50r/min is mixed, 10-15min is stirred, is being dispersed in its various auxiliary agent in PC, mixed base can be obtained
Material；
(3) the default processing of pelletizer: being divided into ten humidity provinces for the grain forming machine barrel temperature of pelletizer, specific each area
Temperature control an are as follows: area: 200-225 DEG C, 2nd area: 220-250 DEG C, 3rd area: 240-255 DEG C, 4th area: 230-270 DEG C, 5th area:
250-275 DEG C, 6th area: 230-270 DEG C, 7th area: 200-220 DEG C, 8th area: 200-225 DEG C, 9th area: 210-230 DEG C, head:
235-250 DEG C, and extrusion pressure is set as 6.0-10.0Mpa；
(4) extruding pelletization: the mixed resin being stirred is added in the above-mentioned pelletizer preset, and processing temperature control exists
It between 200~275 DEG C, reels off raw silk from cocoons after extrusion, crosses cooling water, air-dried, pelletizing, is uniform resistance to low to get arriving into cylinder mixing is mixed greatly
Warm PC composite material.
Embodiment 3:
A kind of low temperature resistant PC composite material, the PC composite material include following weight percent material composition: PC substrate
87%, MBS-2690:7%, AX-8900:1.5%, HR-181:3%, 1076 and 412S compound: 0.5%, PETS:0.5%,
KSS-FR:0.25%, AD541:0.25%.
The preparation method of the low temperature resistant PC composite material the following steps are included:
(1) first PC substrate is added in batch mixer, the diffusing oil of 200ml or so is added, plastics are with the mixing speed of 50r/min
Degree stirs 5-8min, is sufficiently mixed diffusing oil in PC substrate uniformly；
(2) MBS-2690, AX-8900, HR-181,1076 and 412S compound, PETS, KSS-FR, AD541 are respectively added again
Work auxiliary agent is put into PC, the speed of plastic mixer 50r/min, is stirred 10-15min, is being dispersed in its various auxiliary agent
In PC, mixed resin can be obtained；
(3) the default processing of pelletizer: being divided into ten humidity provinces for the grain forming machine barrel temperature of pelletizer, specific each area
Temperature control an are as follows: area: 200-225 DEG C, 2nd area: 220-250 DEG C, 3rd area: 240-255 DEG C, 4th area: 230-270 DEG C, 5th area:
250-275 DEG C, 6th area: 230-270 DEG C, 7th area: 200-220 DEG C, 8th area: 200-225 DEG C, 9th area: 210-230 DEG C, head:
235-250 DEG C, and extrusion pressure is set as 6.0-10.0Mpa；
(4) extruding pelletization: the mixed resin being stirred is added in the above-mentioned pelletizer preset, and processing temperature control exists
It between 200~275 DEG C, reels off raw silk from cocoons after extrusion, crosses cooling water, air-dried, pelletizing, is uniform resistance to low to get arriving into cylinder mixing is mixed greatly
Warm PC composite material.
The properties result of products obtained therefrom
By upper Biao Ke get, low temperature resistant PC composite material of the present invention, in the original enhancing PC modified material physics of holding, chemically
Can while, additionally it is possible to significantly improve material at low temperature stage shock resistance, in -60 DEG C of low temperature, as core-shell structure third
Olefin(e) acid ester is unchanged as glassy state, still has excellent cryogenic property.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of low temperature resistant PC composite material, which is characterized in that the PC composite material includes following weight percent substance group
At: PC substrate 86%~91%, compatilizer 6%~8%, toughener 1%~2%, high glue powder 2%~4%, antioxidant 0.3%
~0.5%, lubricant 0.3%~0.5%, fire retardant 0.2%~0.3%, anti-dripping agent 0.2%~0.4%.
2. a kind of low temperature resistant PC composite material according to claim 1, it is characterised in that: the PC substrate is middle and high viscous
PC substrate is spent, melt index is the polycarbonate of 10-25g/10min, i.e., PC substrate flowing velocity is 10-25g/10min.
3. a kind of low temperature resistant PC composite material according to claim 1, it is characterised in that: the compatilizer is methyl-prop
E pioic acid methyl ester-butadiene-styrene class core-shell structure high-molecular copolymer, preferably MBS-2690, MBS-521 type products.
4. a kind of low temperature resistant PC composite material according to claim 1, it is characterised in that: the toughener is poly- for high pressure
Ethylene, acrylate and acrylic acid shrink ester terpolymer obtained by technique are closed, preferably AX-8900, EMA-PTW type produces
Product.
5. a kind of low temperature resistant PC composite material according to claim 1, it is characterised in that: the high glue powder is benzene second
Alkene-acrylonitrile-butadiene rubber core-shell polymers, gel content 60% or so, preferably HR-181, DPT802 type products.
6. a kind of low temperature resistant PC composite material according to claim 1, it is characterised in that: the antioxidant is Hinered phenols
The compound of antioxidant and phosphite ester antioxidant, the compound of preferably 1076 and 412S antioxidant type product, compounding weight
Amount is than being 3:1.
7. a kind of low temperature resistant PC composite material according to claim 1, it is characterised in that: the lubricant is alkyd esters
High-molecular compound, preferably PETS, EBF, EBG type products.
8. a kind of low temperature resistant PC composite material according to claim 1, it is characterised in that: the fire retardant is Sulfonates
Fire retardant or silicone based flame retardant, preferably KSS-FR, FR-2025, BC-58, RDT-7 type products.
9. a kind of low temperature resistant PC composite material according to claim 1, it is characterised in that: the anti-dripping agent is molecular weight
400 ten thousand to 500 ten thousand modified Teflon class anti-dripping agents, preferably AD541, FS-200 type products.
10. a kind of preparation method of low temperature resistant PC composite material, which is characterized in that the preparation method comprises the following steps:
(1) PC base material treatment: first PC substrate being added in batch mixer, the diffusing oil of 200ml or so is added, plastics are with 50r/min
Mixing velocity, stir 5-8min, be sufficiently mixed diffusing oil in PC substrate uniformly；
(2) raw material stirs: compatilizer, toughener, fire retardant, antioxidant and each processing aid of anti-dripping agent are put into PC again,
The speed of plastic mixer 50r/min stirs 10-15min, is being dispersed in its various auxiliary agent in PC, can be obtained
Mixed resin；
(3) the default processing of pelletizer: being divided into ten humidity provinces for the grain forming machine barrel temperature of pelletizer, specific each area's temperature
Control an are as follows: area: 200-225 DEG C, 2nd area: 220-250 DEG C, 3rd area: 240-255 DEG C, 4th area: 230-270 DEG C, 5th area: 250-
275 DEG C, 6th area: 230-270 DEG C, 7th area: 200-220 DEG C, 8th area: 200-225 DEG C, 9th area: 210-230 DEG C, head: 235-
250 DEG C, and extrusion pressure is set as 6.0-10.0Mpa；
(4) extruding pelletization: the mixed resin being stirred is added in the above-mentioned pelletizer preset, and processing temperature is controlled 200
Between~275 DEG C, reel off raw silk from cocoons after extrusion, cross water is cooling, air-dried, pelletizing, into cylinder mixing is mixed greatly to get arriving uniform low temperature resistant PC
Composite material.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110256829A (en) * | 2019-05-27 | 2019-09-20 | 中广核俊尔(浙江)新材料有限公司 | A kind of high flowing polycarbonate compositions and its preparation method and application |
| CN113817305A (en) * | 2021-10-21 | 2021-12-21 | 福建华塑新材料有限公司 | Preparation method of low-temperature-resistant impact-resistant PC composite material |
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| CN103073866A (en) * | 2012-12-26 | 2013-05-01 | 上海金发科技发展有限公司 | Low-temperature resistant polycarbonate composition for plates and preparation method thereof |
| CN105968771A (en) * | 2016-06-28 | 2016-09-28 | 中广核俊尔新材料有限公司 | High-flame-resistance high-strength high-reflection polycarbonate material as well as preparation method thereof and application thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103073866A (en) * | 2012-12-26 | 2013-05-01 | 上海金发科技发展有限公司 | Low-temperature resistant polycarbonate composition for plates and preparation method thereof |
| CN105968771A (en) * | 2016-06-28 | 2016-09-28 | 中广核俊尔新材料有限公司 | High-flame-resistance high-strength high-reflection polycarbonate material as well as preparation method thereof and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110256829A (en) * | 2019-05-27 | 2019-09-20 | 中广核俊尔(浙江)新材料有限公司 | A kind of high flowing polycarbonate compositions and its preparation method and application |
| CN110256829B (en) * | 2019-05-27 | 2021-02-19 | 中广核俊尔(浙江)新材料有限公司 | High-fluidity polycarbonate composition, and preparation method and application thereof |
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Application publication date: 20190416 |