CN114644820A - High-temperature-resistant halogen-free flame-retardant special engineering plastic and preparation method thereof - Google Patents
High-temperature-resistant halogen-free flame-retardant special engineering plastic and preparation method thereof Download PDFInfo
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- CN114644820A CN114644820A CN202011507965.1A CN202011507965A CN114644820A CN 114644820 A CN114644820 A CN 114644820A CN 202011507965 A CN202011507965 A CN 202011507965A CN 114644820 A CN114644820 A CN 114644820A
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- 229920006351 engineering plastic Polymers 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000003063 flame retardant Substances 0.000 title claims abstract description 20
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 50
- 229920005989 resin Polymers 0.000 claims abstract description 50
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 29
- 239000004917 carbon fiber Substances 0.000 claims abstract description 29
- 239000003365 glass fiber Substances 0.000 claims abstract description 29
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 29
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 25
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 25
- 239000011593 sulfur Substances 0.000 claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 17
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 34
- 229920003023 plastic Polymers 0.000 claims description 16
- 239000004033 plastic Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000011812 mixed powder Substances 0.000 claims description 5
- 238000009966 trimming Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000004513 sizing Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 239000004417 polycarbonate Substances 0.000 description 18
- 238000007493 shaping process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920000106 Liquid crystal polymer Polymers 0.000 description 1
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229920013638 modified polyphenyl ether Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920006260 polyaryletherketone Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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Classifications
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
Abstract
The application discloses a high-temperature-resistant halogen-free flame-retardant special engineering plastic and a preparation method thereof, wherein PC resin, sulfur-containing special engineering resin, glass fiber, carbon fiber, talcum powder, a curing agent, a compatilizer and an antioxidant are weighed, and then the PC resin, the sulfur-containing special engineering resin, the glass fiber, the carbon fiber and the talcum powder are dried for later use; then, the PC resin, the sulfur-containing special engineering resin, the glass fiber, the carbon fiber and the talcum powder are crushed into powder, and then are placed in a high-speed mixing device to be fully mixed, and then the curing agent, the compatilizer and the antioxidant are sequentially added. The PC resin, the sulfur-containing special engineering resin, the glass fiber and the carbon fiber are adopted for composite molding, the glass fiber and the carbon fiber are applied to enhance the original heat resistance and excellent mechanical property of the engineering plastic, and meanwhile, the talcum powder is doped in the glass fiber and the carbon fiber, so that the corrosion resistance and the insulating property of the engineering plastic are enhanced.
Description
Technical Field
The application relates to a high-temperature resistant halogen-free flame-retardant special engineering plastic, in particular to a high-temperature resistant halogen-free flame-retardant special engineering plastic and a preparation method thereof.
Background
The engineering plastic can be used as engineering material and can replace metal to manufacture machine parts and other plastics, has excellent comprehensive performance, high rigidity, small creep, high mechanical strength, high heat resistance and high electric insulating property, can be used in harsh chemical and physical environments for a long time, can replace metal to be used as engineering structural material, but has high price and low yield.
Engineering plastics can be divided into general engineering plastics and special engineering plastics. The main varieties of the former are five general purpose engineering plastics of polyamide, polycarbonate, polyformaldehyde, modified polyphenyl ether and thermoplastic polyester; the latter mainly refers to engineering plastics with heat resistance of more than 150 ℃, and the main varieties are polyimide, polyphenylene sulfide, polysulfones, aromatic polyamide, polyarylate, polyphenyl ester, polyaryletherketone, liquid crystal polymer, fluororesin and the like.
The heat resistance of the traditional engineering plastics is relatively general, the service life of the traditional engineering plastics can be influenced when the traditional engineering plastics are matched with components for use, and the requirements on the engineering plastics are improved due to the wide application of the engineering plastics. Therefore, the high-temperature resistant halogen-free flame-retardant special engineering plastic and the preparation method thereof are provided for solving the problems.
Disclosure of Invention
A high-temperature resistant halogen-free flame-retardant special engineering plastic and a preparation method thereof comprise 60-70% of PC resin, 10-20% of sulfur-containing special engineering resin, 0.1-3% of glass fiber, 0.1-3% of carbon fiber, 1-3% of talcum powder, 0.1-2% of curing agent, 1-3.5% of compatilizer and 0.1-2% of antioxidant.
Further, the preparation method comprises the following steps:
s1, weighing PC resin, sulfur-containing special engineering resin, glass fiber, carbon fiber, talcum powder, a curing agent, a compatilizer and an antioxidant, and then drying the PC resin, the sulfur-containing special engineering resin, the glass fiber, the carbon fiber and the talcum powder for later use;
s2, then crushing the PC resin, the sulfur-containing special engineering resin, the glass fiber, the carbon fiber and the talcum powder into powder, further placing the powder in high-speed mixing equipment for fully mixing, and then sequentially adding a curing agent, a compatilizer and an antioxidant;
s3, finally, the mixed powder is filled into a blank forming die coated with a release agent, the pressure is increased to 4-6MPa, the blank forming die is placed in a heating furnace for heating, the heating temperature is 180-200 ℃, the blank forming die is taken out and placed on a press machine, the pressure is 8-12MPa for cooling, the cooling is carried out to 65-75 ℃, then the blank forming die is opened, the product is taken out, trimming is carried out, and the shaping is carried out through a shaping die.
Further, the drying temperature in the step S2 is 100 ℃, the drying time is 4-5H, and the water content in the material is controlled to be below 0.02%.
Further, the crushing equipment in the step S2 is a jaw crusher, and the maximum crushing grain size of the jaw crusher is 1000-1200 mm.
Further, the high-speed mixing device in the step S2 is a plastic high-speed mixer, the rotating speed of the plastic high-speed mixer is 1440r/min, and the total volume of the plastic high-speed mixer is 200L.
Further, the cavity temperature of the blank forming die in the step S2 is about 80 ℃.
Further, the pressure of the blank forming die in the step S2 is 42MPa, and the dwell time of the blank forming die is 30-90S,
further, the heating furnace in the step S2 is filled with inert gas for protection, the heating furnace can be heated to about 195 ℃, and the heating furnaceHeating time t ═ 40X (H/10)4/3。
Further, in the step S2, the prepared raw materials are added into a die to be preformed and cold-pressed under the pressure of 15-20MPa, then the raw materials are heated to the temperature above the melting temperature, generally 360 ℃, and then the pressure of 7-40MPa is added to be secondarily compressed for 3-5 min.
Further, the cold press in the step S2 is slowly cooled to 230 ℃ at a rate of 2 ℃/min, and then rapidly cooled to 150 ℃.
The beneficial effect of this application is: the application provides a halogen-free flame-retardant special engineering plastic with high-temperature resistance and a preparation method thereof.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a flow chart of a method according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in the figure 1 of the drawings,
example one
The high temperature resistant halogen-free flame retardant special engineering plastic comprises 60% of PC resin, 20% of sulfur-containing special engineering resin, 1.5% of glass fiber, 1.5% of carbon fiber, 1% of talcum powder, 1% of curing agent, 2% of compatilizer and 1% of antioxidant.
Further, the preparation method comprises the following steps:
s1, weighing PC resin, sulfur-containing special engineering resin, glass fiber, carbon fiber, talcum powder, a curing agent, a compatilizer and an antioxidant, and then drying the PC resin, the sulfur-containing special engineering resin, the glass fiber, the carbon fiber and the talcum powder for later use;
s2, then crushing the PC resin, the sulfur-containing special engineering resin, the glass fiber, the carbon fiber and the talcum powder into powder, further placing the powder in high-speed mixing equipment for fully mixing, and then sequentially adding a curing agent, a compatilizer and an antioxidant;
s3, finally, the mixed powder is filled into a blank forming die coated with a release agent, the pressure is increased to 4-6MPa, the blank forming die is placed in a heating furnace for heating, the heating temperature is 180-200 ℃, the blank forming die is taken out and placed on a press machine, the pressure is 8-12MPa for cooling, the cooling is carried out to 65-75 ℃, then the blank forming die is opened, the product is taken out, trimming is carried out, and the shaping is carried out through a shaping die.
Further, the drying temperature in the step S2 is 100 ℃, the drying time is 4-5H, and the water content in the material is controlled to be below 0.02%.
Further, the crushing equipment in the step S2 is a jaw crusher, and the maximum crushing grain size of the jaw crusher is 1000-1200 mm.
Further, the high-speed mixing device in the step S2 is a plastic high-speed mixer, the rotating speed of the plastic high-speed mixer is 1440r/min, and the total volume of the plastic high-speed mixer is 200L.
Further, the cavity temperature of the blank forming die in the step S2 is about 80 ℃.
Further, the pressure of the blank forming die in the step S2 is 42MPa, and the dwell time of the blank forming die is 30-90S,
further, the heating furnace in the step S2 is filled with inert gas for protection, the heating furnace is heated to about 195 ℃, and the heating time t of the heating furnace is 40X (H/10)4/3。
In the step S2, the prepared raw materials are added into a die to be preformed and cold-pressed, the pressure is 15-20MPa, then the raw materials are heated to the temperature above the melting temperature, generally 360 ℃, and then the pressure of 7-40MPa is added to perform secondary compression for 3-5 min.
Further, the cold press in the step S2 is slowly cooled to 230 ℃ at a rate of 2 ℃/min, and then rapidly cooled to 150 ℃.
Example two
The high temperature resistant halogen-free flame retardant special engineering plastic comprises 65% of PC resin, 15% of sulfur-containing special engineering resin, 2% of glass fiber, 2% of carbon fiber, 2% of talcum powder, 1% of curing agent, 2.5% of compatilizer and 1.5% of antioxidant.
Further, the preparation method comprises the following steps:
s1, weighing PC resin, sulfur-containing special engineering resin, glass fiber, carbon fiber, talcum powder, a curing agent, a compatilizer and an antioxidant, and then drying the PC resin, the sulfur-containing special engineering resin, the glass fiber, the carbon fiber and the talcum powder for later use;
s2, then crushing the PC resin, the sulfur-containing special engineering resin, the glass fiber, the carbon fiber and the talcum powder into powder, further placing the powder in high-speed mixing equipment for fully mixing, and then sequentially adding a curing agent, a compatilizer and an antioxidant;
s3, finally, filling the mixed powder into a blank forming die coated with a release agent, pressurizing to 4-6MPa, then placing the blank forming die into a heating furnace for heating at the heating temperature of 180-200 ℃, taking out the blank forming die, placing the blank forming die on a press, cooling to 65-75 ℃ under the pressure of 8-12MPa, then opening the blank forming die, taking out a product, trimming, and sizing through a sizing die.
Further, the drying temperature in the step S2 is 100 ℃, the drying time is 4-5H, and the water content in the material is controlled to be below 0.02%.
Further, the crushing equipment in the step S2 is a jaw crusher, and the maximum crushing grain size of the jaw crusher is 1000-1200 mm.
Further, the high-speed mixing device in the step S2 is a plastic high-speed mixer, the rotating speed of the plastic high-speed mixer is 1440r/min, and the total volume of the plastic high-speed mixer is 200L.
Further, the cavity temperature of the blank forming die in the step S2 is about 80 ℃.
Further, the pressure of the blank forming die in the step S2 is 42MPa, and the dwell time of the blank forming die is 30-90S,
further, the heating furnace in the step S2 is filled with inert gas for protection, the heating furnace is heated to about 195 ℃, and the heating time t of the heating furnace is 40X (H/10)4/3。
In the step S2, the prepared raw materials are added into a die to be preformed and cold-pressed, the pressure is 15-20MPa, then the raw materials are heated to the temperature above the melting temperature, generally 360 ℃, and then the pressure of 7-40MPa is added to perform secondary compression for 3-5 min.
Further, the cold press in the step S2 is slowly cooled to 230 ℃ at a rate of 2 ℃/min, and then rapidly cooled to 150 ℃.
EXAMPLE III
The high temperature resistant halogen-free flame retardant special engineering plastic comprises 70% of PC resin, 10% of sulfur-containing special engineering resin, 3% of glass fiber, 3% of carbon fiber, 3% of talcum powder, 2% of curing agent, 3% of compatilizer and 2% of antioxidant.
Further, the preparation method comprises the following steps:
s1, weighing PC resin, sulfur-containing special engineering resin, glass fiber, carbon fiber, talcum powder, a curing agent, a compatilizer and an antioxidant, and then drying the PC resin, the sulfur-containing special engineering resin, the glass fiber, the carbon fiber and the talcum powder for later use;
s2, then crushing the PC resin, the sulfur-containing special engineering resin, the glass fiber, the carbon fiber and the talcum powder into powder, further placing the powder in high-speed mixing equipment for fully mixing, and then sequentially adding a curing agent, a compatilizer and an antioxidant;
s3, finally, the mixed powder is filled into a blank forming die coated with a release agent, the pressure is increased to 4-6MPa, the blank forming die is placed in a heating furnace for heating, the heating temperature is 180-200 ℃, the blank forming die is taken out and placed on a press machine, the pressure is 8-12MPa for cooling, the cooling is carried out to 65-75 ℃, then the blank forming die is opened, the product is taken out, trimming is carried out, and the shaping is carried out through a shaping die.
Further, the drying temperature in the step S2 is 100 ℃, the drying time is 4-5H, and the water content in the material is controlled to be below 0.02%.
Further, the crushing equipment in the step S2 is a jaw crusher, and the maximum crushing grain size of the jaw crusher is 1000-1200 mm.
Further, the high-speed mixing device in the step S2 is a plastic high-speed mixer, the rotating speed of the plastic high-speed mixer is 1440r/min, and the total volume of the plastic high-speed mixer is 200L.
Further, the cavity temperature of the blank forming die in the step S2 is about 80 ℃.
Further, the pressure of the blank forming die in the step S2 is 42MPa, and the dwell time of the blank forming die is 30-90S,
further, the heating furnace in the step S2 is filled with inert gas for protection, the heating furnace is heated to about 195 ℃, and the heating time t of the heating furnace is 40X (H/10)4/3。
In the step S2, the prepared raw materials are added into a die to be preformed and cold-pressed, the pressure is 15-20MPa, then the raw materials are heated to the temperature above the melting temperature, generally 360 ℃, and then the pressure of 7-40MPa is added to perform secondary compression for 3-5 min.
Further, the cold press in the step S2 is slowly cooled to 230 ℃ at a rate of 2 ℃/min, and then rapidly cooled to 150 ℃.
The application has the advantages that: the PC resin, the sulfur-containing special engineering resin, the glass fiber and the carbon fiber are adopted for composite molding, the glass fiber and the carbon fiber are applied to enhance the original heat resistance and excellent mechanical property of the engineering plastic, and meanwhile, the talcum powder is doped in the glass fiber and the carbon fiber, so that the corrosion resistance and the insulating property of the engineering plastic are enhanced.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A high-temperature resistant halogen-free flame-retardant special engineering plastic is characterized in that: comprises 60-70% of PC resin, 10-20% of sulfur-containing special engineering resin, 0.1-3% of glass fiber, 0.1-3% of carbon fiber, 1-3% of talcum powder, 0.1-2% of curing agent, 1-3.5% of compatilizer and 0.1-2% of antioxidant.
2. A method of manufacturing according to claim 1, wherein: the preparation method comprises the following steps:
s1, weighing PC resin, sulfur-containing special engineering resin, glass fiber, carbon fiber, talcum powder, a curing agent, a compatilizer and an antioxidant, and then drying the PC resin, the sulfur-containing special engineering resin, the glass fiber, the carbon fiber and the talcum powder for later use;
s2, then crushing the PC resin, the sulfur-containing special engineering resin, the glass fiber, the carbon fiber and the talcum powder into powder, further placing the powder in high-speed mixing equipment for fully mixing, and then sequentially adding a curing agent, a compatilizer and an antioxidant;
s3, finally, filling the mixed powder into a blank forming die coated with a release agent, pressurizing to 4-6MPa, then placing the blank forming die into a heating furnace for heating at the heating temperature of 180-200 ℃, taking out the blank forming die, placing the blank forming die on a press, cooling to 65-75 ℃ under the pressure of 8-12MPa, then opening the blank forming die, taking out a product, trimming, and sizing through a sizing die.
3. The high-temperature-resistant halogen-free flame-retardant special engineering plastic and the preparation method thereof according to claim 2 are characterized in that: and the drying temperature in the step S2 is 100 ℃, the drying time is 4-5H, and the water content in the material is controlled to be below 0.02%.
4. The high-temperature-resistant halogen-free flame-retardant special engineering plastic and the preparation method thereof according to claim 2 are characterized in that: the crushing equipment in the step S2 adopts a jaw crusher, and the maximum crushing grain size of the jaw crusher is 1000-1200 mm.
5. The high-temperature-resistant halogen-free flame-retardant special engineering plastic and the preparation method thereof according to claim 2 are characterized in that: the high-speed mixing device in the step S2 adopts a plastic high-speed mixer, the rotating speed of the plastic high-speed mixer is 1440r/min, and the total volume of the plastic high-speed mixer is 200L.
6. The high-temperature-resistant halogen-free flame-retardant special engineering plastic and the preparation method thereof according to claim 2 are characterized in that: and the temperature of the die cavity of the blank forming die in the step S2 is about 80 ℃.
7. The high-temperature-resistant halogen-free flame-retardant special engineering plastic and the preparation method thereof according to claim 2, characterized in that: and the pressure of the blank forming die in the step S2 is 42MPa, and the dwell time of the blank forming die is 30-90S.
8. The high-temperature-resistant halogen-free flame-retardant special engineering plastic and the preparation method thereof according to claim 2The preparation method is characterized by comprising the following steps: the heating furnace in the step S2 is filled with inert gas for protection, the heating furnace can be heated to about 195 ℃, and the heating time t of the heating furnace is 40X (H/10)4/3。
9. The high-temperature-resistant halogen-free flame-retardant special engineering plastic and the preparation method thereof according to claim 2 are characterized in that: in the step S2, the prepared raw materials are added into a mould for performing and cold pressing under the pressure of 15-20MPa, then the mould is heated to the temperature above the melting temperature, generally 360 ℃, and then the pressure of 7-40MPa is added for secondary compression for 3-5 min.
10. The high-temperature-resistant halogen-free flame-retardant special engineering plastic and the preparation method thereof according to claim 2 are characterized in that: in the step S2, the cold pressure is slowly cooled to 230 ℃ at the speed of 2 ℃/min and then is rapidly cooled to 150 ℃.
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| CN101362857A (en) * | 2008-09-24 | 2009-02-11 | 华南理工大学 | Non-halogen flame-retarding high performance polycarbonate engineering plastics and preparation method thereof |
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| CN101362857A (en) * | 2008-09-24 | 2009-02-11 | 华南理工大学 | Non-halogen flame-retarding high performance polycarbonate engineering plastics and preparation method thereof |
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