CN114752188A - Cold and hot cycle resistant flame-retardant reinforced polyester composite material and preparation method and application thereof - Google Patents
Cold and hot cycle resistant flame-retardant reinforced polyester composite material and preparation method and application thereof Download PDFInfo
- Publication number
- CN114752188A CN114752188A CN202210242877.6A CN202210242877A CN114752188A CN 114752188 A CN114752188 A CN 114752188A CN 202210242877 A CN202210242877 A CN 202210242877A CN 114752188 A CN114752188 A CN 114752188A
- Authority
- CN
- China
- Prior art keywords
- cold
- composite material
- polyester composite
- reinforced polyester
- resistant flame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2425/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2425/02—Homopolymers or copolymers of hydrocarbons
- C08J2425/04—Homopolymers or copolymers of styrene
- C08J2425/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/14—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
- C08J2433/16—Homopolymers or copolymers of esters containing halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2469/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K3/2279—Oxides; Hydroxides of metals of antimony
- C08K2003/2282—Antimonates
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K3/2279—Oxides; Hydroxides of metals of antimony
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/02—Halogenated hydrocarbons
- C08K5/03—Halogenated hydrocarbons aromatic, e.g. C6H5-CH2-Cl
Abstract
The invention discloses a cold and hot cycle resistant flame-retardant reinforced polyester composite material and a preparation method and application thereof. The polyester composite material comprises the following components in parts by weight: 40-50 parts of PBT resin, 9-14 parts of flame retardant, 2-4 parts of synergistic flame retardant, 20-30 parts of glass fiber, 5-8 parts of non-reactive toughening agent, 0.8-1.5 parts of epoxy resin, 0.2-0.5 part of nucleating agent and 0-2 parts of processing aid, wherein the glass transition temperature of the non-reactive toughening agent is-50 ℃ to-34 ℃. The polyester composite material does not contain plasticizer and carbodiimide, overcomes the defects of high processing smell of PBT polyester and plasticizer, has cold and hot cycle cracking resistance times higher than 350 times, and has obviously improved cold and hot cycle resistance.
Description
Technical Field
The invention relates to the technical field of engineering plastics, in particular to a cold and hot cycle resistant flame-retardant reinforced polyester composite material and a preparation method and application thereof.
Background
The PBT has excellent electrical property, mechanical strength, solvent resistance and processability due to crystallization and linear saturation, the modified polyester is widely applied to the fields of electronics and electricity, automobiles, households, OA and the like, and because plastic parts in various fields are directly contacted with metal current-carrying parts or act as heat-resistant heat-insulating functional parts, components such as glass fibers, flame retardants and the like are usually added into polyester materials to endow the plastic parts with heat resistance, high strength, fire resistance and the like, but in many occasions, the plastic parts have the requirements of high and low temperature cycle tests on the plastic parts under the action of double-layer factors of the use working condition and the ambient temperature, and the plastic parts are usually subjected to cold and hot cycle tests by wrapping metal inserts through processing methods such as injection molding, mold pressing, extrusion and the like to form integral functional parts of plastic-coated metals, in the testing process, the situation that the plastic part is easy to crack due to the difference of the linear expansion coefficients of the plastic and the metal insert to cause the functional part to lose efficacy often occurs, so that the plastic material of the plastic-coated metal part is required to be functionally improved, and the plastic material can pass a cold-hot cycle test.
At present, the prior art for improving the cold and heat cycle resistance of the PBT polyester mainly comprises two types, wherein one type is that the cold and heat cycle resistance of a single reinforced material is improved by adding carbodiimide and an elastomer into glass fiber reinforced PBT, but in the processing process, the carbodiimide easily reacts with active hydrogen to generate isocyanate with pungent odor, and the production environment is severe; the other method is to add PCTG resin, fluorine-containing processing aid and benzene plasticizer into the glass fiber reinforced PBT material to obtain the polyester composition with low processing smell, high welding strength and good cold and heat resistance, but the PCTG is high in price and the benzene plasticizer has the possibility of precipitation in the use process of the material.
Disclosure of Invention
The invention aims to overcome the defects or shortcomings of the existing PBT polyester such as large processing smell and plasticizer precipitation, and provides a cold and hot cycle resistant flame-retardant reinforced polyester composite material. The polyester composite material provided by the invention does not contain a plasticizer and carbodiimide, overcomes the defects of large processing smell of PBT polyester and plasticizer precipitation, has a cold-hot cycle cracking frequency higher than 350 times, and has obviously improved cold-hot cycle resistance.
The invention also aims to provide a preparation method of the flame-retardant reinforced polyester composite material with cold and hot cycle resistance.
The invention also aims to provide application of the flame-retardant reinforced polyester composite material resistant to cold and hot cycles.
The above purpose of the invention is realized by the following technical scheme:
a cold and hot cycle resistant flame-retardant reinforced polyester composite material comprises the following components in parts by weight:
wherein the glass transition temperature of the non-reactive flexibilizer is-50 ℃ to-34 ℃.
Research shows that the cold and hot cycle resistance of the material can be improved by adding carbodiimide and elastomer into glass fiber reinforced PBT, but in the processing process, the carbodiimide easily reacts with active hydrogen to generate isocyanate with pungent smell, and the use of benzene plasticizer has the risk of plasticizer precipitation.
Through repeated tests, the inventor finds that a certain amount of epoxy resin and a non-reactive toughening agent with the glass transition temperature of-50 ℃ to-34 ℃ are added into the PBT resin, the molecular chain of the non-reactive toughening agent with the lower glass transition temperature is still in a viscoelastic state at a low temperature, and in a cold-hot cycle test, the viscoelastic molecular chain of the non-reactive toughening agent easily absorbs external energy at a lower temperature, so that the cold-hot cycle resistance is improved. Meanwhile, the PBT resin, the epoxy resin and the toughening agent have certain interaction, so that the cold and heat cycle resistance of the polyester composite material can be obviously improved.
The non-reactive toughener is a toughener which does not contain groups capable of reacting with hydroxyl, carboxyl, ester group and the like on a molecular main chain or a side chain.
In the present invention, the glass transition temperature of the non-reactive toughener is measured by Dynamic Mechanical Analysis (DMA).
Preferably, the non-reactive toughener is selected from ethylene-butyl acrylate copolymer with a glass transition temperature of-50 ℃ and/or ethylene-methyl acrylate with a glass transition temperature of-34 ℃.
Preferably, the cold and hot cycle resistant flame-retardant reinforced polyester composite material comprises the following components in parts by weight: 1.0-1.2 parts of epoxy resin.
More preferably, the epoxy equivalent of the epoxy resin is 2500-3100 g/eq. The epoxy equivalent weight is obtained by adopting an ASTM D1652-11(2019) standard test.
The PBT resin has low intrinsic viscosity, the composite material has good fluidity, and the PBT resin is tightly combined with a plastic part welding line during the molding of a metal insert, is not easy to crack during a cold and hot circulation test, but is too low, and the material strength cannot meet the use requirement.
Preferably, the PBT resin has an intrinsic viscosity of 0.68dl/g to 0.83 dl/g.
The intrinsic viscosity of the PBT resin disclosed by the invention is measured according to a capillary viscometer method, and the measurement temperature is 25 ℃.
The glass fiber is used as a commonly used reinforcing material of the PBT polyester composite material, the diameter of the glass fiber can influence the performance of the PBT polyester composite material, the smaller the diameter is, the higher the tensile strength of the composite material is, but the smaller the diameter is, the more difficult the processing and production of the glass fiber is.
Preferably, the glass fiber is alkali-free glass fiber with the diameter of 10-13 mu m.
The flame retardant of the invention is selected from conventional flame retardants in the field. Typically, the flame retardant is selected from one or more of brominated epoxy resins, brominated polystyrenes, brominated polycarbonates, decabromodiphenylethane, and pentabromobenzyl polyacrylates.
The conventional synergistic flame retardant in the field can be selected as the synergistic flame retardant. Typically, the synergistic flame retardant is antimony white and/or sodium antimonate.
The nucleating agent of the invention is selected from the nucleating agents which are conventional in the field. Preferably, the nucleating agent is selected from talcum powder with the average particle size of 0.65-2 mu m. The talcum powder with the average grain diameter of 0.65-2 mu m is used as the nucleating agent, so that the dispersibility and the processability can be improved.
The processing aid of the invention can be selected from the processing aids conventional in the art. Typically, the processing aids are antioxidants and lubricants.
The antioxidant is pentaerythritol ester (1010) and/or phosphite ester (168).
The lubricant is PE wax (PED521) and/or pentaerythritol stearic acid (PETS).
The invention also provides a preparation method of the cold and hot cycle resistant flame-retardant reinforced polyester composite material, which comprises the following steps:
and uniformly mixing the dried PBT resin, the flame retardant, the synergistic flame retardant, the glass fiber, the non-reactive toughening agent, the epoxy resin, the nucleating agent and the processing aid, and performing melt extrusion, cooling and granulation by using a double-screw extruder to obtain the cold and heat cycle resistant flame-retardant reinforced polyester composite material.
Preferably, the drying temperature of the PBT resin is 120-140 ℃ and the time is 4-6 h.
Preferably, the feeding amount of the double-screw extruder is 450-800 kg/h, and the screw rotating speed is 250-400 rpm.
Preferably, the temperature of each section of screw of the double-screw extruder from a feed inlet to a machine head is 220-230 ℃ in a first zone, 230-240 ℃ in a second zone, 230-240 ℃ in a third zone, 240-250 ℃ in a fourth zone, 250-260 ℃ in a fifth zone, 240-250 ℃ in a sixth zone, 240-250 ℃ in a seventh zone, 230-240 ℃ in an eighth zone and 230-240 ℃ in a ninth zone.
The invention also protects the application of the cold and hot cycle resistant flame-retardant reinforced polyester composite material in a cold and hot cycle resistant flame-retardant reinforced polyester composite material product.
Including but not limited to heat-dissipating fans, coil bobbins, LED lamp cups, motor housings, connectors, and the like.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, a certain amount of epoxy resin and non-reactive toughener with glass transition temperature of-50 ℃ to-34 ℃ are added into PBT resin, and the PBT resin, the epoxy resin and the toughener are synergistic to obtain the polyester composite material with obviously improved cold and heat cycle resistance. The polyester composite material has the cold-hot cycle cracking times higher than 350 times and the tensile strength higher than 80MPa, and can be widely applied to the electronic and electrical fields such as cooling fans, coil frameworks, LED lamp cups, motor shells, connectors and the like.
Detailed Description
In order to more clearly and completely describe the technical scheme of the invention, the invention is further explained in detail by the specific embodiments, and it should be understood that the specific embodiments described herein are only used for explaining the invention, and are not used for limiting the invention, and various changes can be made within the scope defined by the claims of the invention.
The present invention will be further described with reference to the following embodiments.
The reagents, methods and apparatus employed in the present invention are conventional in the art, except as otherwise indicated.
The starting materials in the examples and comparative examples are commercially available as follows:
the cold and hot cycle resistant flame retardant reinforced polyester composite materials described in the examples and comparative examples were prepared by the following method:
and uniformly mixing the dried PBT resin, the flame retardant, the synergistic flame retardant, the glass fiber, the non-reactive toughening agent, the epoxy resin, the nucleating agent and the processing aid, and performing melt extrusion, cooling and granulation by using a double-screw extruder to obtain the cold and heat cycle resistant flame-retardant reinforced polyester composite material.
The drying temperature of the PBT resin is 120-140 ℃, and the drying time is 4-6 h.
Feeding of the double-screw extruder is 450-800 kg/h; the temperature of each section of screw of the double-screw extruder from a feed inlet to a machine head is 220-230 ℃ in a first area, 230-240 ℃ in a second area, 230-240 ℃ in a third area, 240-250 ℃ in a fourth area, 250-260 ℃ in a fifth area, 240-250 ℃ in a sixth area, 240-250 ℃ in a seventh area, 230-240 ℃ in an eighth area, 230-240 ℃ in a ninth area and 250-400 rpm in the rotation speed of the screw.
Examples 1 to 7
Examples 1 to 7 provide a cold-hot cycle resistant flame retardant reinforced polyester composite material, the amounts of the components used are shown in table 1.
TABLE 1 amount (parts by weight) of each component used in examples 1 to 7
Examples 8 to 15
Examples 8 to 15 provide a cold-hot cycle resistant flame retardant reinforced polyester composite material, the amounts of the components used are shown in table 2.
TABLE 2 amounts (parts by weight) of each component used in examples 8 to 15
Comparative examples 1 to 6
Comparative examples 1 to 6 provide a polyester composite material, the amounts of the components used are shown in table 3.
TABLE 3 amounts (parts by weight) of each component used in comparative examples 1 to 6
Performance testing
The performance test was performed on the cold and hot cycle resistant flame retardant reinforced polyester composite material prepared in the above examples and comparative examples. The test method specifically comprises the following steps:
drying a product obtained by extruding and granulating at 120-130 ℃ for 3-4 h, preparing a test sample sheet by injection molding according to corresponding standard, and injection molding the test sample sheet under the same injection molding process parameters, wherein the size of the test sample is 170 multiplied by 10 multiplied by 4mm (tensile strength test) and 125 multiplied by 13 multiplied by 1.5mm (flame retardant test);
the tensile strength is tested according to ISO 527-;
the flame retardant test is carried out according to the UL94-2013 standard;
and (3) cold and hot cycle resistance test: the LED lamp cup is used as a metal insert test article, the LED lamp cup test article is composed of an aluminum metal lining and a modified PBT composite material, the aluminum metal lining is placed in a mold in advance, and the PBT composite material particles are used for in-mold injection molding. Wherein the height of the aluminum metal lining is 68mm, the large caliber is 80mm, the small caliber is 38mm, the thickness is 0.45mm, and the thickness of the plastic wall in the injection molding test product is 0.8-0.9 mm; the lamp cup test article is used only for the explanation of the cold-hot cycle test of the examples and comparative examples, and is not to be construed as limiting the cold-hot cycle test method of the present invention; the cold and hot circulation resistant test is carried out in a cold and hot circulation experiment box, the experiment box is divided into two boxes, the temperature can be set to be high and low, and the switching time of a test sample between the two boxes is less than 20 s. According to the common test conditions in the lighting industry, the test product of the plastic-coated aluminum lamp cup is placed in a cold and hot circulation experiment box, stays for 30min at 120 ℃, then stays for 30min at minus 40 ℃ within 20s, stays for 30min at 120 ℃ and stays for 30min at minus 40 ℃ within 120 s as a cycle, and the test is repeated until the plastic part of the test product of the plastic-coated aluminum lamp cup cracks, and the cycle times are recorded. The test article was inspected every 12h for the number of cycles to generate cracks (12 cycles per 12h test).
The test results of examples 1-15 are shown in Table 4 below.
Table 4 test results of the cooling-heating cycle resistant flame retardant reinforced polyester composite materials of examples 1 to 15.
TABLE 4
The test results of comparative examples 1 to 6 are shown in Table 5 below.
Table 5 test results of the cold-hot cycle resistant flame retardant reinforced polyester composite of comparative examples 1 to 6.
| Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | Comparative example 6 | |
| Tensile strength/MPa | 91 | 93 | 83 | 87 | 90 | 97 |
| Flame-retardant | V-0 | V-0 | V-1 | V-0 | V-0 | V-0 |
| Number of cold and hot cycle cracking | 276 | 192 | 300 | 288 | 324 | 312 |
As can be seen from Table 4, the tensile strength of the polyester composite material in each example is greater than 80MPa, the cold-hot cycle cracking times are greater than 350, and the flame retardant grades are V-0, which shows that the polyester composite material has excellent mechanical properties, flame retardant properties and cold-hot cycle resistance.
From examples 1 and 12 to 14, it is understood that when the amount of the epoxy resin added is 1.0 to 1.2 parts, the polyester composite material has more excellent cold-heat cycle resistance.
As can be seen from Table 5, the toughening agent in comparative example 1 is LOTRYL 18MA02, the glass transition temperature is-25 ℃, the toughening agent in comparative example 2 is not added, the toughening agent in comparative example 3 is added in a large amount, the epoxy resin in comparative example 4 is not added, the addition amount of the epoxy resin in comparative example 5 is 0.5 part, the addition amount of the epoxy resin in comparative example 6 is 2 parts, and the cold-hot cycle cracking times of the prepared material are all lower than 350 times.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The cold and hot cycle resistant flame-retardant reinforced polyester composite material is characterized by comprising the following components in parts by weight:
wherein the glass transition temperature of the non-reactive flexibilizer is-50 ℃ to-34 ℃.
2. The cold and heat cycle resistant flame retardant reinforced polyester composite material as claimed in claim 1, which comprises the following components in parts by weight: 1.0-1.2 parts of epoxy resin.
3. The cold and heat cycle resistant flame retardant reinforced polyester composite material as claimed in claim 2, wherein the epoxy resin has an epoxy equivalent of 2500 to 3100 g/eq.
4. The flame-retardant reinforced polyester composite material with cold and heat cycle resistance of claim 1, wherein the intrinsic viscosity of the PBT resin is 0.68dl/g to 0.83 dl/g.
5. The cold-heat cycle resistant flame-retardant reinforced polyester composite material of claim 1, wherein the glass fiber is an alkali-free glass fiber having a diameter of 10 to 13 μm.
6. The cold-hot cycle resistant flame-retardant reinforced polyester composite material of claim 1, wherein the flame retardant is one or more of brominated epoxy resin, brominated polystyrene, brominated polycarbonate, decabromodiphenylethane, and pentabromobenzyl polyacrylate.
7. The cold and heat cycle resistant flame retardant reinforced polyester composite material of claim 1, wherein the synergistic flame retardant is antimony white and/or sodium antimonate.
8. The cold and heat cycle resistant flame retardant reinforced polyester composite material as claimed in claim 1, wherein the nucleating agent is selected from talc powder with an average particle size of 0.65-2 μm.
9. The preparation method of the cold and heat cycle resistant flame-retardant reinforced polyester composite material as claimed in any one of claims 1 to 8, characterized by comprising the following steps:
and uniformly mixing the dried PBT resin, the flame retardant, the synergistic flame retardant, the glass fiber, the non-reactive toughening agent, the epoxy resin, the nucleating agent and the processing aid, and performing melt extrusion, cooling and granulation by using a double-screw extruder to obtain the cold and heat cycle resistant flame-retardant reinforced polyester composite material.
10. The use of the cold and heat cycle resistant flame retardant reinforced polyester composite material of any one of claims 1 to 8 in a cold and heat cycle resistant flame retardant reinforced polyester composite material article.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210242877.6A CN114752188A (en) | 2022-03-11 | 2022-03-11 | Cold and hot cycle resistant flame-retardant reinforced polyester composite material and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210242877.6A CN114752188A (en) | 2022-03-11 | 2022-03-11 | Cold and hot cycle resistant flame-retardant reinforced polyester composite material and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114752188A true CN114752188A (en) | 2022-07-15 |
Family
ID=82327064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210242877.6A Pending CN114752188A (en) | 2022-03-11 | 2022-03-11 | Cold and hot cycle resistant flame-retardant reinforced polyester composite material and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114752188A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113583396A (en) * | 2021-07-07 | 2021-11-02 | 金发科技股份有限公司 | PBT composition resistant to cyclic injection molding, preparation method and product thereof |
-
2022
- 2022-03-11 CN CN202210242877.6A patent/CN114752188A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113583396A (en) * | 2021-07-07 | 2021-11-02 | 金发科技股份有限公司 | PBT composition resistant to cyclic injection molding, preparation method and product thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108034204B (en) | low-temperature impact resistant polyester composition and preparation method thereof | |
| CN103059562B (en) | High-glossiness anti-warping high-strength PA6 (polyamide 6) composite material, and preparation and application thereof | |
| CN113583396B (en) | PBT composition resistant to cyclic injection molding, preparation method and product thereof | |
| CN108264749A (en) | A kind of high good surface carbon fiber reinforced polycarbonate composite material of flowing and preparation method thereof | |
| CN103013068A (en) | Glass fiber reinforced PBT resin composition with refrigerant precipitation resistance and preparation method of glass fiber reinforced PBT resin composition | |
| CN113462141A (en) | High-toughness low-floating-fiber-reinforced PC/PBT alloy material and preparation method thereof | |
| CN105419253A (en) | Polybutylene terephthalate composition and preparation method thereof | |
| CN109337302A (en) | A kind of ultralow warpage high impact resistance fiberglass enhancing PBT/PC/ABS ternary-alloy material and preparation method | |
| CN107365494B (en) | PA6/PC/PBT ternary alloy material and preparation method thereof | |
| CN104693701A (en) | Low-warpage halogen-free flame-retardant glass fiber reinforced PBT/AS alloy and preparation method thereof | |
| CN102850733B (en) | Polybutylene terephthalate composition and its preparation method | |
| CN110862684A (en) | POK/PPS composite material and preparation method thereof | |
| CN103160102A (en) | High-performance inflaming retarding PC / PET alloy material and preparation method thereof | |
| CN114752188A (en) | Cold and hot cycle resistant flame-retardant reinforced polyester composite material and preparation method and application thereof | |
| CN113292838B (en) | Halogen-free low-warpage low-linear-expansion-coefficient extrusion-grade thin-wall flame-retardant polycarbonate composite material and preparation method thereof | |
| CN104231585A (en) | High-flowability halogen-free flame-retardant polycarbonate, preparation method thereof and high-flowability halogen-free flame-retardant polycarbonate product | |
| CN104448685A (en) | Ceramic fiber reinforced flame retardant ABS and preparation method thereof | |
| CN102070886A (en) | PBT (polybutylene terephthalate)/PC (polycarbonate) alloy material with high CTI (comparative tracking index) value and high flame retardance and preparation method thereof | |
| CN109467907B (en) | PC/PMMA/PBT composite material and preparation method thereof | |
| CN113136061A (en) | Flame-retardant polyethylene material and preparation method and application thereof | |
| CN112646331A (en) | Polybutylene terephthalate mixture and preparation method thereof | |
| CN113845760B (en) | Low-floating-fiber reinforced PBT/PET alloy composition and preparation method and application thereof | |
| CN114409994B (en) | Glass fiber reinforced cyclic olefin copolymer material, and preparation method and application thereof | |
| CN112552653B (en) | Low-smoke high-toughness halogen-free flame-retardant PBT/PTT composite and preparation method and application thereof | |
| CN114539735B (en) | PBT/POK composite material and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |