CN116426097A - Thermoplastic polyester composite material and preparation and application thereof - Google Patents
Thermoplastic polyester composite material and preparation and application thereof Download PDFInfo
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- CN116426097A CN116426097A CN202310403410.XA CN202310403410A CN116426097A CN 116426097 A CN116426097 A CN 116426097A CN 202310403410 A CN202310403410 A CN 202310403410A CN 116426097 A CN116426097 A CN 116426097A
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- Prior art keywords
- thermoplastic polyester
- polyester composite
- composite material
- wollastonite
- mica powder
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- 229920000728 polyester Polymers 0.000 title claims abstract description 36
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 36
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 36
- 239000002131 composite material Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 229920006346 thermoplastic polyester elastomer Polymers 0.000 claims abstract description 24
- 239000003607 modifier Substances 0.000 claims abstract description 8
- 239000000654 additive Substances 0.000 claims abstract description 7
- 229910052618 mica group Inorganic materials 0.000 claims description 30
- 239000010445 mica Substances 0.000 claims description 29
- 239000000843 powder Substances 0.000 claims description 27
- 239000010456 wollastonite Substances 0.000 claims description 23
- 229910052882 wollastonite Inorganic materials 0.000 claims description 23
- 239000002245 particle Substances 0.000 claims description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 5
- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000000975 dye Substances 0.000 claims description 2
- 239000003063 flame retardant Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 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 claims 1
- 229920007019 PC/ABS Polymers 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 10
- 238000001746 injection moulding Methods 0.000 abstract description 8
- 238000000465 moulding Methods 0.000 abstract description 7
- 238000002347 injection Methods 0.000 abstract description 6
- 239000007924 injection Substances 0.000 abstract description 6
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- -1 3, 5-di-tert-butyl-4-hydroxyphenyl Chemical group 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 2
- 239000012964 benzotriazole Substances 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- 238000005886 esterification reaction Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 2
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 229920000909 polytetrahydrofuran Polymers 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- REBHQKBZDKXDMN-UHFFFAOYSA-M [PH2]([O-])=O.C(C)[Al+]CC Chemical compound [PH2]([O-])=O.C(C)[Al+]CC REBHQKBZDKXDMN-UHFFFAOYSA-M 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- ZJKCITHLCNCAHA-UHFFFAOYSA-K aluminum dioxidophosphanium Chemical compound [Al+3].[O-][PH2]=O.[O-][PH2]=O.[O-][PH2]=O ZJKCITHLCNCAHA-UHFFFAOYSA-K 0.000 description 1
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 description 1
- CYZUDIMATZLFMB-UHFFFAOYSA-N butyl 2-methylprop-2-enoate;methyl 2-methylprop-2-enoate Chemical compound COC(=O)C(C)=C.COC(=O)C(C)=C.CCCCOC(=O)C(C)=C CYZUDIMATZLFMB-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 239000006185 dispersion Substances 0.000 description 1
- MCPKSFINULVDNX-UHFFFAOYSA-N drometrizole Chemical compound CC1=CC=C(O)C(N2N=C3C=CC=CC3=N2)=C1 MCPKSFINULVDNX-UHFFFAOYSA-N 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229940116351 sebacate Drugs 0.000 description 1
- CXMXRPHRNRROMY-UHFFFAOYSA-L sebacate(2-) Chemical compound [O-]C(=O)CCCCCCCCC([O-])=O CXMXRPHRNRROMY-UHFFFAOYSA-L 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 125000003011 styrenyl group Chemical class [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920000428 triblock copolymer Polymers 0.000 description 1
- 235000013799 ultramarine blue Nutrition 0.000 description 1
- 229940124543 ultraviolet light absorber Drugs 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a thermoplastic polyester composite material, and preparation and application thereof, and the components comprise: TPEE, PMAM, modifiers, additives. The thermoplastic polyester composite material has good adhesive force effect when being subjected to secondary injection bonding with PC/ABS, has no appearance abnormal phenomena such as skinning, flow marks and the like during thin-wall injection molding, has no oil precipitation after long-term use, and has short molding period.
Description
Technical Field
The invention belongs to the field of processing plastics, and particularly relates to a thermoplastic polyester composite material, and preparation and application thereof.
Background
The thermoplastic polyester elastomer TPEE has excellent mechanical property and chemical solvent resistance, and is increasingly applied in the fields of automobile parts, electronic appliances, optical fiber sheaths and the like. The adhesive has good adhesive effect with polar materials such as PC, ABS, PC/ABS alloy and the like, and can be directly adhered on the surface of hard rubber through molding processes such as secondary injection coating and the like. The electric tool has been widely used in the fields of electric tool handles, automobile parts and the like.
The hardness of thermoplastic polyester elastomer is generally higher than 75A, which limits the application fields of low hardness and good hand feeling. At present, in order to achieve the effects of low hardness and adhesion with PC, ABS, PC/ABS, an oil-filled hydrogenated styrene elastomer is generally added into a thermoplastic polyester elastomer, but when the thickness of a coating layer is relatively thin, particularly lower than 0.5mm, peeling and flow marks occur near a gate, the appearance is abnormal, and mineral oil in a material is easy to separate out after long-time baking.
Disclosure of Invention
In view of the shortcomings of the prior art, the invention aims to provide a thermoplastic polyester composite material and preparation and application thereof.
The invention relates to a thermoplastic polyester composite material, which comprises the following components in parts by weight:
40-60 parts of TPEE;
40-60 parts of PMAM;
2-10 parts of modifier;
0-10 parts of additive;
wherein the soft segment content in TPEE is 60-85% by mass, and the soft segment content is used 1 H NMR was performed, for specific test methods, reference Polymer Bulletin 42,587-594 (1999);
the modifier is a mixture of wollastonite and mica powder, wherein the mass ratio of the wollastonite to the mica powder is (1:3) - (3:1); wherein the wollastonite has an average particle size of 400-1250 mesh, the mica powder has an average particle size of 40-500 mesh, and the particle size is tested with reference to GB/T19077-2016.
TPEE: a thermoplastic polyester elastomer; PMAM: linear methyl methacrylate-butyl methacrylate-methyl methacrylate triblock copolymer.
Preferably, the soft segment mass percentage of the TPEE is 65-80%. In this range, a good adhesion effect can be achieved, molding is fast, and production efficiency is high.
Preferably, the mass ratio of the wollastonite to the mica powder is (1:2) - (2:1).
Preferably, the wollastonite has an average particle size of 600 to 800 meshes and the mica powder has an average particle size of 300 to 400 meshes. When the particle sizes of the wollastonite and the mica powder are in the range, the molding cycle is shorter, and the surface color of the finished product is uniform.
Preferably, the additive is one or more of flame retardants (such as diethyl aluminum phosphinate, inorganic aluminum phosphinate, resorcinol bis-diphenyl phosphate and the like), antioxidants (such as 4.4 '-bis (alpha. -dimethylbenzyl) diphenylamine, pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], n-stearyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate and the like), UV-resistant agents (such as 2- (2' -hydroxy-3 ',5' -bis (a, a-dimethylbenzyl) phenyl) benzotriazole, 2- (2-hydroxy-5-methylphenyl) benzotriazole, bis (2, 6-tetramethyl-4-piperidinyl) sebacate and the like), carbon black, pigments (such as azo orange, yellow iron and the like), dyes (such as ultramarine blue, azo orange and the like), mineral powders (such as calcium carbonate, talcum powder, montmorillonite and the like).
Preferably, the components comprise, by weight:
45-55 parts of TPEE;
43-55 parts of PMAM;
3-8 parts of modifier;
0-10 parts of additive.
The preparation method of the thermoplastic polyester composite material comprises the following steps:
weighing the components according to the weight ratio, mixing and feeding the components into a double-screw extruder, granulating and drying the mixture to obtain the thermoplastic polyester composite material.
Preferably, the extrusion granulating temperature is 180-250 ℃, the length-diameter ratio of the twin-screw extruder is 36-60/1, and the residence time of the materials in the screw is 40-90 s.
The thermoplastic polyester composite material is applied to the fields of daily consumer products, sports products or electric tools, such as electric tool handles, game machine handles and intelligent glasses frames.
When the thermoplastic polyester compound is subjected to secondary injection molding bonding with PC/ABS, the thermoplastic polyester compound mainly plays a role in bonding and is a TPEE component. After the TPEE and the PMAM are mixed and compounded, the PMAM has certain polarity and certain compatibility with the TPEE, the TPEE can be uniformly distributed in the compound and can be uniformly adhered to the surface of PC/ABS, and appearance anomalies such as skinning, flow lines and the like can not occur at a gate, so that the TPEE is not easy to separate out. After the modifier is added, the dispersion of TPEE can be helped, and the bonding effect is improved; in the cooling process after injection molding, the modifier can play a role in nucleation, accelerate the near hardening of the compound and shorten the molding cycle.
Advantageous effects
The thermoplastic polyester composite material has good adhesive force effect when being subjected to secondary injection bonding with PC/ABS, has no appearance abnormal phenomena such as skinning, flow marks and the like during thin-wall injection molding, has no oil precipitation after long-term use, and has short molding period.
Detailed Description
The invention will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.
1. Raw material source
TPEE of different soft segment content is prepared by reference to the synthetic method disclosed in british patent GB 1323727. The preparation method comprises the following steps: and (3) adding the metered dimethyl terephthalate, 1, 4-butanediol and polytetrahydrofuran ether into a reaction kettle, heating to 200-230 ℃, adding a catalyst for esterification reaction, heating to 240-260 ℃ after the esterification reaction is finished, gradually reducing the pressure of the system to below 0.5mmHg, and continuing the reaction for 2-3 hours. After the reaction is finished, high-purity nitrogen is filled into the reaction kettle, the melt is pressed out of a mouth die of the reaction kettle, and the required thermoplastic polyester elastomer TPEE is obtained after granulating. By changing the feeding amount of polytetrahydrofuran ether, the following TPEE with 5 different soft segment contents is obtained:
TPEE-1, the mass percentage of the soft segment is 80%;
TPEE-2, the mass percentage of the soft segment is 65%;
TPEE-3, the mass percentage of the soft segment is 60%;
TPEE-4, the mass percentage of the soft segment is 90%;
TPEE-5, wherein the mass percentage of the soft segment is 50%;
PMAM: kuraritiy LA2330, manufactured by cola company;
mineral oil filled SEBS, SEBS G1654/150 n=1/1.5 (mass ratio), wherein SEBS G1654 is produced by koteng company, 150N is produced by middle sea oil;
wollastonite-1 mesh, wollastonite-106, shanghai tendan mineral powder technology Co., ltd; the method comprises the steps of carrying out a first treatment on the surface of the
Wollastonite-2 mesh, HQ-800, produced by Dalian ball mineral Co., ltd;
wollastonite-3 mesh, HQ-1250, produced by Dalian ball mineral Co., ltd
Wollastonite-4.1800 mesh, HK-2000F, produced by Dalian ball mineral Co., ltd
Mica powder-1 mesh, AY-04N mesh, available from Guangzhou Dachao chemical Co., ltd;
mica powder-300 mesh, 300HC, manufactured by Hua Jing mica Co., ltd., of Ministry of life;
mica powder with the particle size of-3 meshes and AY-03N; manufactured by Jingda mica materials limited company in Jiangmen City;
mica powder-4 mesh, W-600 mesh, manufactured by Hua Jing mica Limited company in Chengshou county;
modifier-1: 600 meshes of wollastonite and 400 meshes of mica powder, wherein the mass ratio is 1:1;
modifier-2: 600 meshes of wollastonite and 400 meshes of mica powder, wherein the mass ratio is 2:1;
modifier-3: 600 meshes of wollastonite and 400 meshes of mica powder, wherein the mass ratio is 1:3;
modifier-4: 600 meshes of wollastonite and 400 meshes of mica powder, wherein the mass ratio is 3:1;
modifier-5: 800 meshes of wollastonite and 300 meshes of mica powder in a mass ratio of 1:1;
modifier-6: wollastonite is 1200 meshes and mica powder is 50 meshes, and the mass ratio is 1:1;
modifier-7: 600 meshes of wollastonite and 600 meshes of mica powder, wherein the mass ratio is 1:1;
modifier-8: 1800 meshes of wollastonite and 400 meshes of mica powder in a mass ratio of 1:1;
modifier-9: 600 meshes of wollastonite and 400 meshes of mica powder, wherein the mass ratio is 1:6;
modifier-10: 600 meshes of wollastonite and 400 meshes of mica powder, wherein the mass ratio is 5:1;
modifier-11: wollastonite 600 mesh;
modifier 12: mica powder 400 mesh.
Additive: an antioxidant of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] with the mass ratio of 2:3:5, an ultraviolet light absorber of 2- (2 ' -hydroxy-3 ',5' -bis (a, a-dimethylbenzyl) phenyl) benzotriazole and carbon black.
The additives used in the parallel examples and comparative examples are the same commercially available products.
2. Preparation methods of examples and comparative examples
Weighing the components according to the weight ratio, mixing and feeding the components into a double-screw extruder, granulating and drying to obtain the thermoplastic polyester composite material; the extrusion granulating temperature is 180-250 ℃, the length-diameter ratio of the double screw extruder is 36-60/1, and the residence time of the materials in the screw is 40-90 s.
3. Test criteria and methods
The adhesive force evaluation method comprises the following steps:
with reference to German society of engineers standard VDI 2019:2016, a test is carried out, a PC/ABS plastic strip with a size of 150 x 40 x 2mm is placed into a die cavity, a thermoplastic polyester composite material is subjected to secondary injection molding bonding on the surface of the PC/ABS hard plastic strip through an injection molding process at a temperature of 210-230 ℃, and a tensile machine is used for testing the 90-degree stripping force.
The bond rating was done in a destructive manner:
class a: the thermoplastic polyester composite material is damaged by the interface of PC/ABS, and no thermoplastic polyester composite material remains on the surface of PC/ABS;
b level: the thermoplastic polyester composite material is damaged by the interface of PC/ABS, and the residual area of the thermoplastic polyester composite material on the surface of PC/ABS is less than 50% of the area of PC/ABS;
c level: the thermoplastic polyester composite material is damaged by the interface of PC/ABS, and the residual area of the thermoplastic polyester composite material on the surface of PC/ABS is more than 50% of the area of PC/ABS;
d stage: the thermoplastic polyester composite material is broken, and the PC/ABS interface is not damaged;
and (3) evaluating according to the bonding effect: class D > class C > class B > class A
Skinning the surface of a workpiece:
the thermoplastic polyester composite material was injection molded into a cavity having a size of 200×25×0.5mm, and whether or not there was a defect such as peeling in the appearance of the position near the gate was observed.
Oil separation:
the thermoplastic polyester composite material was injection molded into a square plate of 100 x 1mm, and the square plate was baked in an oven at 85 ℃ for 2000 hours to see if oily substances were precipitated on the surface of the square plate.
The molding speed evaluation method comprises the following steps:
the thermoplastic polyester composite material is injection molded into a disc-shaped part with the diameter of 50mm and the thickness of 10mm, and the cooling time is changed under the same injection molding process condition. The product can be normally demoulded, the shortest cooling time is recorded as t under the condition of no deformation, and the forming speed is judged by comparing the value of t.
Table 1 proportion (parts by weight) of examples
Table 2 proportion (parts by weight) of comparative examples
Table 3 performance effect data for the examples
Table 4 performance effect data for comparative example
The embodiments 1-12 of the invention show that when the thermoplastic polyester compound prepared by the combination of TPEE, PMAM, wollastonite and mica powder is subjected to secondary injection molding bonding with PC/ABS, the bonding effect can reach the highest D level, the cooling time is less than 346s, the appearance abnormality such as skinning and flow marks on the surface is avoided, and the problem of oil precipitation is avoided when the thermoplastic polyester compound is baked for a long time.
Claims (8)
1. The thermoplastic polyester composite material is characterized by comprising the following components in parts by weight:
wherein the mass percentage of the soft segment in the TPEE is 60-85 percent;
the modifier is a mixture of wollastonite and mica powder, wherein the mass ratio of the wollastonite to the mica powder is (1:3) - (3:1);
wherein the average particle size of wollastonite is 400-1250 meshes, and the average particle size of mica powder is 40-500 meshes.
2. The thermoplastic polyester composite according to claim 1, wherein the soft segment content in TPEE is 65 to 80% by mass.
3. The thermoplastic polyester composite material according to claim 1, wherein the mass ratio of wollastonite to mica powder is (1:2) to (2:1).
4. The thermoplastic polyester composite according to claim 1, wherein the wollastonite has an average particle size of 600 to 800 mesh and the mica powder has an average particle size of 300 to 400 mesh.
5. The thermoplastic polyester composite material according to claim 1, wherein the additive is one or more of flame retardant, antioxidant, UV resistant agent, carbon black, pigment, dye, and mineral powder.
6. The thermoplastic polyester composite according to claim 1, wherein the components comprise, in parts by weight:
7. a method of making the thermoplastic polyester composite of claim 1, comprising:
weighing the components according to the weight ratio, mixing and feeding the components into an extruder, granulating and drying to obtain the thermoplastic polyester composite material.
8. Use of the thermoplastic polyester composite of claim 1 in the field of consumer goods, sporting goods or power tools.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310403410.XA CN116426097A (en) | 2023-04-17 | 2023-04-17 | Thermoplastic polyester composite material and preparation and application thereof |
Applications Claiming Priority (1)
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