CN105419249B - Liquid-crystal polyester resin compound and preparation method thereof - Google Patents
Liquid-crystal polyester resin compound and preparation method thereof Download PDFInfo
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- CN105419249B CN105419249B CN201511016674.1A CN201511016674A CN105419249B CN 105419249 B CN105419249 B CN 105419249B CN 201511016674 A CN201511016674 A CN 201511016674A CN 105419249 B CN105419249 B CN 105419249B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/38—Polymers
- C09K19/3804—Polymers with mesogenic groups in the main chain
- C09K19/3809—Polyesters; Polyester derivatives, e.g. polyamides
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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Abstract
The invention discloses a kind of liquid-crystal polyester resin compounds and preparation method thereof.Liquid-crystal polyester resin compound of the present invention includes the component of following parts by weight：50 80 parts of liquid-crystal polyester resin, 5 30 parts of the first filler, 5 30 parts of the second filler, 0 30 parts of third filler.Liquid-crystal polyester resin compound of the present invention has excellent mobility and heat resistance, high mechanical strength, preparation method is that liquid-crystal polyester resin, the first filler and the second filler and third filler first are carried out batch mixing, then melting extrusion processing is carried out, the performance that the liquid-crystal polyester resin compound of preparation can be effectively ensured in preparation method is stablized, preparation method technical maturity simultaneously, and method is simply controllable, it is easy to accomplish industrialization.
Description
Technical field
The invention belongs to field of polymer composite material more particularly to a kind of liquid-crystal polyester resin of high mechanical strength are compound
Object and preparation method thereof.
Background technology
Liquid-crystal polyester resin (LCP) is typically a kind of thermotropic (Thermotropic) liquid crystalline resin, and molten condition is very excellent
And it with excellent heat resistance and excellent dimensional stability, extremely low hygroscopicity, high mechanical performance, electric property add
The advantages that work is simple for process has become manufacture high-frequency circuit board, flexible circuit board, integrated circuit, solar cell, electronics mark
The important materials of the electronic units such as label.
Specifically, in electric industry, prospects of the LCP as high-end electronic material substrate and connector raw material
Constantly expand, especially constantly promoted in the frequency of use in electric power connector field, because it is with extremely low warpage properties, and
LCP has the characteristics of molding thickness is thinner, and relative intensity is bigger, and the connector being therefore particularly suited in electronics industry is
A kind of ideal precise electronic connector material.
But during manufacture and use, we can be found that existing LCP materials still can be because of the inadequate of mobility
Fully so that manufacture is as complicated, occur when thin-walled connector of build length that filling is discontented, lacks the problem of material, and LCP materials
Material seems that intensity is high not enough when connector increasingly pursues frivolous, occurs deformation in use, cracking even destroys.
Invention content
The purpose of the present invention is to provide a kind of liquid-crystal polyester resin compounds and preparation method thereof, it is intended to solve existing
Liquid-crystal polyester resin is applied to there is technical issues that mobility and mechanical strength not in thin-walled connector.
In order to achieve the above-mentioned object of the invention, on the one hand the embodiment of the present invention, provides a kind of liquid-crystal polyester resin compound.
The liquid-crystal polyester resin compound includes the component of following parts by weight：
On the other hand the embodiment of the present invention, provides a kind of preparation method of liquid-crystal polyester resin compound, including following
Step：
Each component raw material is weighed respectively according to the component contained by liquid-crystal polyester resin compound of the embodiment of the present invention；
Processing is dried in the liquid-crystal polyester resin, the first filler, the second filler and third filler；
The dried liquid-crystal polyester resin, the first filler, the second filler and third filler are subjected to mixing treatment, obtained
To mixture；
The mixture is subjected to melting extrusion processing.
Compared with prior art, liquid-crystal polyester resin of embodiment of the present invention compound is set based on liquid-crystal polyester resin
Fat component carries out humidification to base resin using three classes filler, on the one hand can ensure the liquid crystal of the embodiment of the present invention
The excellent mechanical performance of polyester resin compound, on the other hand can further improve its mobile performance and heat resistance so that this hair
Bright embodiment liquid-crystal polyester resin compound is especially suitable for thin-walled connector material.
The preparation method of liquid-crystal polyester resin compound of the embodiment of the present invention handles each component in the order described above,
Each component is uniformly dispersed so that liquid-crystal polyester resin of the embodiment of the present invention compound of preparation has high machinery by force
Degree and excellent mobility, also with good heat resistance.In addition, the preparation method technical maturity, and method is simply controllable, easily
In realization industrialization.
Specific embodiment
In order to which technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain
The present invention is not intended to limit the present invention.
The weight of each component noted in the disclosure of the embodiment of the present invention not only may refer to the specific of each component and contain
Amount can also represent the proportionate relationship of weight between each component, therefore, as long as it is each according to specification composition of the embodiment of the present invention
The content of component is scaled up or is reduced within specification of embodiment of the present invention scope of disclosure.Specifically, it is of the invention
Embodiment weight described in the specification can be unit of weight well known to the chemical fields such as μ g, mg, g, kg.
On the one hand, the liquid-crystal polyester resin an embodiment of the present invention provides a kind of high mechanical strength, good flowing properties is compound
Object.In one embodiment, the liquid-crystal polyester resin compound includes the component of following parts by weight：
Specifically, in the embodiment of the present invention, the liquid-crystal polyester resin assigns the compound as matrix resin component
Excellent heat resistance, dimensional stability and high-mechanical property.In one embodiment, the liquid-crystal polyester resin can be all aromatic
Liquid-crystal polyester resin.
In one embodiment, all aromatic liquid crystal polyester resin contains at least one of following repetitive units：
Repetitive unit from aromatic diol：-O-Ar-O-；
Repetitive unit from aromatic diamine：-HN-Ar-NH-；
Repetitive unit from aromatic series azanol：-HN-Ar-O-；
Repetitive unit from aromatic dicarboxylic acid：-OC-Ar-CO-；
Repetitive unit from aromatic hydroxy-carboxylic：-O-Ar-CO-；
Repetitive unit from aromatic amine yl carboxylic acid：-HN-Ar-CO-；
Wherein, the Ar for penylene and its derivative, biphenylene and its derivative, naphthalene and its derivative, two penylenes by
One kind in aromatic compound and its derivative that carbon or the element of non-carbon are bonded.
In a particular embodiment, said derivative can with but not just for penylene, biphenylene, naphthalene or two penylenes by carbon or
The aromatic compound that more than one hydrogen in the aromatic compound that the element of non-carbon is bonded is replaced by other elements.
In one embodiment, the liquid-crystal polyester resin such as all aromatic liquid crystal polyester resin can be polymerize by reaction monomers
It forms, in a particular embodiment, polymerisation includes the following steps：
A. at least two reaction monomers are subjected to polycondensation reaction synthesis Wholly aromatic liquid crystal polyester prepolyer；
B. the prepolymer that step a is manufactured is subjected to solid phase polycondensation to synthesize all aromatic liquid crystal polyester resin.
Wherein, the reaction monomers in step a include but not limited to free aromatic diol, aromatic diamine and fragrance
At least one of race's azanol；Another reaction monomers include but not limited to aromatic dicarboxylic acid, aromatic hydroxy-carboxylic, aromatic series
At least one of amino carboxylic acid.
As preferred implementation, before the polycondensation reaction is carried out, further include to the reaction monomers using acylation agent into
Row pretreatment.It can promote the polycondensation reaction of the reaction monomers by pretreatment.Specifically, the acylation agent include but
Acetyl group agent is not limited to, the reaction monomers can be carried out acetylation process, it is anti-to improve its polycondensation by the acetyl group agent
Ying Xing.
The method realization of this field routine, including but not limited to solution polycondensation, ontology may be used in the polycondensation reaction
Condensation methods.
In above-mentioned steps b, the solid state condensation reaction needs to carry out at heating to above-mentioned liquid-crystal polyester resin prepolymer
Reason.The methods of heat treatment can be by heating plate, hot wind, high temperature fluid.In addition, in order to remove the pair of solid state condensation reaction
Product using inert gas purge or utilizes vacuum removing.
Certainly, above-mentioned liquid-crystal polyester resin such as all aromatic liquid crystal polyester resin can directly use commercially available liquid crystal polyester
Resin such as all aromatic liquid crystal polyester resin.
In addition, in certain embodiments, the content of the liquid-crystal polyester resin is 50 parts, 52 parts, 55 parts, 58 parts,
60 parts, 62 parts, 65 parts, 68 parts, 70 parts, 72 parts, 75 parts, 78 parts, the specific deals such as 80 parts.
In the embodiment of the present invention, in order to assign the excellent mechanical strength of liquid-crystal polyester resin compound of the embodiment of the present invention and
Mobility makes it play synergistic effect using above-mentioned three classes filler.Therefore, in one embodiment, first filler is talcum
Powder, preferably HAR talcum powder (High Aspect Ratio Talc, HAR Talc).In a particular embodiment, the HAR is slided
The aspect ratio (radius-thickness ratio) of mountain flour is more than or equal to 30.The HAR talcum powder of the selection aspect ratio (radius-thickness ratio) more than or equal to 30
It can be compounded with other fillers, base resin is acted on, significantly improve the machine of liquid-crystal polyester resin compound of the embodiment of the present invention
Tool intensity and mobility.In certain embodiments, the content of first filler can be 5 parts, 7 parts, 10 parts, 13 parts, 15
Part, 17 parts, 20 parts, 22 parts, 25 parts, 28 parts, the specific deals such as 30 parts.
In another embodiment, second filler is one or more of mixing of glass fibre, whisker, carbon fiber
Object.In another embodiment, the third filler for wollastonite, talcum powder, mica, titanium dioxide, carbon black, calcium carbonate, clay,
At least one of barium sulfate, silica.In certain embodiments, the content of first filler can be 5 parts, 8 parts,
10 parts, 13 parts, 15 parts, 17 parts, 20 parts, 22 parts, 25 parts, 28 parts, the specific deals such as 30 parts.
In another embodiment, the third filler for wollastonite, talcum powder, mica, titanium dioxide, carbon black, calcium carbonate,
At least one of clay, barium sulfate, silica.In certain embodiments, the content of the third filler can be 0
Part, 2 parts, 5 parts, 7 parts, 10 parts, 13 parts, 15 parts, 17 parts, 20 parts, 22 parts, 25 parts, 28 parts, the specific deals such as 30 parts.
By the optimization of the type and content to above-mentioned three classes filler, the synergistic effect between three classes filler is improved so that
Three classes filler acts on base resin component, so as to improve the mobility and machine of liquid-crystal polyester resin compound of the embodiment of the present invention
Tool intensity.In addition, the synergistic effect by three classes filler, moreover it is possible to significantly improve liquid-crystal polyester resin compound of the embodiment of the present invention
Heat resistance.
Therefore, liquid-crystal polyester resin compound provided in an embodiment of the present invention is by selecting three classes filler and base resin liquid
It is acted between brilliant polyester resin so that synergistic effect occurs for three classes filler, is answered so as to assign liquid-crystal polyester resin of the embodiment of the present invention
The excellent mobility of object and high mechanical strength are closed, while also assigns the heat-resisting of liquid-crystal polyester resin compound of the embodiment of the present invention
Property so that liquid-crystal polyester resin compound of the embodiment of the present invention is particularly suitable for application as the long and thin connector material of build.
On the other hand, the embodiment of the present invention additionally provides liquid-crystal polyester resin compound of the embodiment of the present invention described above
A kind of preparation method.In one embodiment, the preparation method of liquid-crystal polyester resin of embodiment of the present invention compound includes as follows
Step：
S01. each group is weighed respectively according to the component contained by liquid-crystal polyester resin compound described in the embodiment of the present invention above
Divide raw material；
S02. processing is dried in the liquid-crystal polyester resin, the first filler, the second filler and third filler；
S03. the dried liquid-crystal polyester resin, the first filler, the second filler and third filler are carried out at batch mixing
Reason, obtains mixture；
S04. the mixture is subjected to melting extrusion processing.
Specifically, in above-mentioned steps S01, the component of the liquid-crystal polyester resin compound and its each preferable case, as above
Described in stating, in order to save length, details are not described herein again.
As in an embodiment, the liquid-crystal polyester resin selects all aromatic liquid crystal polyester resin, in specific embodiment
In, the liquid-crystal polyester resin such as all aromatic liquid crystal polyester resin is gathered using reaction monomers polymerisation process described above
It closes.
In above-mentioned steps S02, in order to which the effect of each component is better achieved, need to claim the step S01 before charging
Processing is dried in each raw material taken such as components such as liquid-crystal polyester resin, the first filler, the second filler and third filler, so as to keep away
Exempt from the excessively high performance for reducing compound of moisture.As a preferred embodiment, the temperature of the drying process is 130-160 DEG C, reaction
Time is 3-6 hours.
In above-mentioned steps S03, by the dried liquid-crystal polyester resin, the first filler, the second filler and third filler
The mixing treatment of progress is in order to enable each component is uniformly mixed so that each component is fully dispersed, and therefore, which can be with
Mixing treatment, such as stirring mode are carried out by the way of commonly used in the art.In one embodiment, step S03 batch mixings
Processing can realize that certainly, other, which can also be used, can realize that mixed uniformly mode is realized by automatic blender.
In above-mentioned steps S04, mixture carry out melting extrusion, each component high-pressure smelting state carry out fully be kneaded and with
Base resin is had an effect, so as to assign the liquid-crystal polyester resin compound of extrusion have superior fluidity as described above and
Mechanical strength and heat resistance.
Therefore, in order to ensure and improve the above-mentioned performance of liquid-crystal polyester resin compound of the embodiment of the present invention, implement one
In example, the process conditions that melting extrusion is handled in step S04 are：It is fused under the screw speed of 300RPM-600RPM, barrel
Temperature is 320 DEG C~370 DEG C, and control vacuum degree is in 0.5MPa~0.8MPa.
In another specific embodiment, double screw extruder extrusion may be used in the melting extrusion processing in step S04.
It is axiomatic that the material through step S04 melting extrusions further includes the processes such as tie rod, cooling, granulation.
Therefore, the preparation method of liquid-crystal polyester resin of embodiment of the present invention compound carries out each component in the order described above
Processing, each component, which can be effectively ensured, to be uniformly dispersed so that the liquid-crystal polyester resin compound of the embodiment of the present invention of preparation is excellent
Different mobility and high mechanical properties, heat resistance.In addition, the preparation method technical maturity, and method is simply controllable, it is easy to accomplish production
Industry.
It is illustrated with reference to specific embodiment, it should be appreciated that following embodiments are that optimization formula component is formed
Technical solution, be not intended to limit the present invention the range of choice for recipe ingredient.
Embodiment 1
Present embodiments provide a kind of liquid-crystal polyester resin compound with superior fluidity and high mechanical properties and its
Preparation method.Wherein, the component of liquid-crystal polyester resin compound has：All aromatic liquid crystal polyester resin (Jiangsu water special type material
Expect Manufacturing Co., Ltd) 65 parts, 25 parts of HAR talcum powder, 10 parts of glass fibre.
The liquid-crystal polyester resin compound preparation method is as follows：
S11. all aromatic liquid crystal polyester resin, HAR talcum powder, glass fibre are carried out according to the ratio in table 1 below
It is dried；
S12. by the dried all aromatic liquid crystal polyester resin, HAR talcum powder, the automatic mixing of glass fibre input
It is uniform that batch mixing is carried out in machine, obtains mixture；
S13. mixture input double screw extruder is subjected to melting mixing, then by squeezing out, tie rod, cooling,
Granulation produces all aromatic liquid crystal polyester resin compound.
Embodiment 2
The all aromatic liquid crystal polyester resin that will be selected in above-described embodiment 1, HAR talcum powder, glass fibre, talcum powder
Ratio of weight and number is changed to 65:15:10:10, such as table 1.In addition to this, full fragrance is manufactured with 1 identical method of embodiment
Race's liquid-crystal polyester resin compound.
Embodiment 3
The all aromatic liquid crystal polyester resin that will be selected in above-described embodiment 1, HAR talcum powder, glass fibre, talcum powder
Ratio of weight and number is changed to 65:5:10:20, such as table 1.In addition to this, all aromatic is manufactured with 1 identical method of embodiment
Liquid-crystal polyester resin compound.
Comparative example 1
The all aromatic liquid crystal polyester resin that will be selected in above-described embodiment 1, HAR talcum powder, glass fibre, talcum powder
Ratio of weight and number is changed to 65:0:10:25, such as table 1.In addition to this, all aromatic is manufactured with 1 identical method of embodiment
Liquid-crystal polyester resin compound.
Correlated performance is tested
It is former using all aromatic liquid crystal polyester resin compound manufactured in above-described embodiment 1-3 and comparative example 1 as injection
Embodiment and composition in comparative example are then tested and evaluated by the following method to material using injection moulding machine injection molding,
Performance：
(1) tensile strength：The tensile strength is tested by ASTM D-638.
(2) thermal denaturation temperature：The thermal denaturation temperature is tested by ASTM D-648.
(4) melt viscosity：Obtained by being measured under conditions of 330 DEG C and 1000/s using capillary rheometer (RH2000)
The melt viscosity of resin complexes.
The raw material weight number proportioning of 1 embodiment 1-3 of table, comparative example 1
| Component | Comparative example 1 | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Liquid-crystal polyester resin | 65 | 65 | 65 | 65 |
| HAR talcum powder | 0 | 25 | 15 | 5 |
| Glass fibre | 10 | 10 | 10 | 10 |
| Talcum powder | 25 | 0 | 10 | 20 |
Composition properties test result in 2 embodiment of table and comparative example
| Performance indicator | Comparative example 1 | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Tensile strength (MPa) | 116 | 129 | 121 | 118 |
| Heat distortion temperature (DEG C) | 270 | 274 | 274 | 272 |
| Melt viscosity (Pas) | 111 | 105 | 109 | 112 |
As shown in Table 2, embodiment 1-3 compared with all aromatic liquid crystal polyester resin compound manufactured in comparative example 1 its
Heat distortion temperature and tensile strength improve, and melt viscosity is low and processing performance is good.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of liquid-crystal polyester resin compound, it is characterised in that：It is made of the component of following parts by weight：
All aromatic liquid crystal polyester resin, HAR talcum powder, glass fibre, talcum powder, and all aromatic liquid crystal polyester resin, HAR
Talcum powder, glass fibre, talcum powder ratio of weight and number be 65:15:10:10 or 65:5:10:20.
2. liquid-crystal polyester resin compound as described in claim 1, it is characterised in that：The all aromatic liquid crystal polyester resin
Contain at least one of following repetitive units：
Repetitive unit from aromatic diol：-O-Ar-O-；
Repetitive unit from aromatic diamine：-HN-Ar-NH-；
Repetitive unit from aromatic series azanol：-HN-Ar-O-；
Repetitive unit from aromatic dicarboxylic acid：-OC-Ar-CO-；
Repetitive unit from aromatic hydroxy-carboxylic：-O-Ar-CO-；
Repetitive unit from aromatic amine yl carboxylic acid：-HN-Ar-CO-；
Wherein, the Ar be penylene and its derivative, biphenylene and its derivative, naphthalene and its derivative, two penylenes by carbon or
One kind in aromatic compound and its derivative that the element of non-carbon is bonded.
3. liquid-crystal polyester resin compound as described in claim 1, it is characterised in that：The liquid-crystal polyester resin is single by reaction
Body is polymerized, the reaction monomers include at least one of free aromatic diol, aromatic diamine and aromatic series azanol with
And aromatic dicarboxylic acid, at least one of aromatic hydroxy-carboxylic or aromatic amine yl carboxylic acid.
4. a kind of preparation method of liquid-crystal polyester resin compound, includes the following steps：
Each component raw material is weighed respectively according to the component contained by the liquid-crystal polyester resin compound as described in claim 1-3 is any；
By all aromatic liquid crystal polyester resin, HAR talcum powder, processing is dried in glass fibre, talcum powder；
By the dried all aromatic liquid crystal polyester resin, HAR talcum powder, glass fibre, talcum powder carry out mixing treatment,
Obtain mixture；
The mixture is subjected to melting extrusion processing.
5. preparation method according to claim 4, it is characterised in that：The liquid-crystal polyester resin is prepared by following methods
It obtains, specifically includes following steps：
Reaction monomers in providing at least two carry out polycondensation reaction and prepare liquid crystal polyester prepolyer；
Liquid-crystal polyester resin is prepared in liquid crystal polyester prepolymer progress solid phase polycondensation.
6. preparation method as claimed in claim 5, which is characterized in that before the polycondensation reaction is carried out, further include to described
Reaction monomers are pre-processed using acylation agent.
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| CN106633859A (en) * | 2016-12-29 | 2017-05-10 | 江苏沃特特种材料制造有限公司 | Wholly aromatic liquid crystal polyester resin as well as preparation method and application thereof |
| CN106633678A (en) * | 2016-12-29 | 2017-05-10 | 江苏沃特特种材料制造有限公司 | Liquid crystal polyester resin compound, preparation method thereof and application |
| CN106674938A (en) * | 2016-12-29 | 2017-05-17 | 江苏沃特特种材料制造有限公司 | Dust-free liquid crystal polyester compound and preparation method and application thereof |
| CN106633860B (en) * | 2016-12-29 | 2019-04-12 | 江苏沃特特种材料制造有限公司 | Low-k liquid-crystal polyester resin compound and preparation method thereof |
| CN109796730A (en) * | 2018-12-29 | 2019-05-24 | 江苏沃特特种材料制造有限公司 | Liquid-crystal polyester resin compound with shock resistance and preparation method thereof |
| CN116426093A (en) * | 2020-06-09 | 2023-07-14 | 华为技术有限公司 | Plastic for antenna element |
| CN113527844A (en) * | 2021-08-31 | 2021-10-22 | 重庆沃特智成新材料科技有限公司 | Low-surface-roughness liquid crystal polyester compound and preparation method thereof |
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| US9056950B2 (en) * | 2010-07-23 | 2015-06-16 | Ticona Gmbh | Composite polymeric articles formed from extruded sheets containing a liquid crystal polymer |
| TWI586750B (en) * | 2011-02-28 | 2017-06-11 | 住友化學股份有限公司 | Liquid crystal polyester composition and process for producing the same |
| JP5914935B2 (en) * | 2012-03-21 | 2016-05-11 | 住友化学株式会社 | Liquid crystal polyester composition, method for producing liquid crystal polyester composition, and molded article |
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| 滑石在塑料工业中的应用及其前景的探讨;张高科;《中国非金属矿工业导刊》;20010425(第20期);11-13 * |
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