CN114573249A - Chopped glass fiber impregnating compound for reinforcing thermoplastic polyester resin and application thereof - Google Patents
Chopped glass fiber impregnating compound for reinforcing thermoplastic polyester resin and application thereof Download PDFInfo
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- CN114573249A CN114573249A CN202210321824.3A CN202210321824A CN114573249A CN 114573249 A CN114573249 A CN 114573249A CN 202210321824 A CN202210321824 A CN 202210321824A CN 114573249 A CN114573249 A CN 114573249A
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- 239000003365 glass fiber Substances 0.000 title claims abstract description 57
- 150000001875 compounds Chemical class 0.000 title claims abstract description 47
- 229920006230 thermoplastic polyester resin Polymers 0.000 title claims abstract description 20
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 49
- 239000000314 lubricant Substances 0.000 claims abstract description 18
- 239000007822 coupling agent Substances 0.000 claims abstract description 17
- 239000007787 solid Substances 0.000 claims abstract description 15
- 239000000080 wetting agent Substances 0.000 claims abstract description 14
- 239000000839 emulsion Substances 0.000 claims description 17
- 239000004593 Epoxy Substances 0.000 claims description 10
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- -1 acrylic acid modified glycidyl methacrylate Chemical class 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- 125000000524 functional group Chemical group 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- 238000004513 sizing Methods 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- 229960000583 acetic acid Drugs 0.000 claims description 3
- 239000012362 glacial acetic acid Substances 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- ACIAHEMYLLBZOI-ZZXKWVIFSA-N Unsaturated alcohol Chemical compound CC\C(CO)=C/C ACIAHEMYLLBZOI-ZZXKWVIFSA-N 0.000 claims description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 2
- 125000003700 epoxy group Chemical group 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000004094 surface-active agent Substances 0.000 claims description 2
- 150000002009 diols Chemical class 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 11
- 230000007062 hydrolysis Effects 0.000 abstract description 8
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000008367 deionised water Substances 0.000 abstract description 5
- 229910021641 deionized water Inorganic materials 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 229920001707 polybutylene terephthalate Polymers 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000004626 polylactic acid Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 206010020112 Hirsutism Diseases 0.000 description 6
- 229920000747 poly(lactic acid) Polymers 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010411 cooking Methods 0.000 description 4
- 206010004542 Bezoar Diseases 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 150000002148 esters Chemical group 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 3
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004359 castor oil Substances 0.000 description 2
- 235000019438 castor oil Nutrition 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- NXDJCCBHUGWQPG-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol;terephthalic acid Chemical compound OCC1CCC(CO)CC1.OC(=O)C1=CC=C(C(O)=O)C=C1 NXDJCCBHUGWQPG-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001345 alkine derivatives Chemical class 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 229920000704 biodegradable plastic Polymers 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/26—Macromolecular compounds or prepolymers
- C03C25/32—Macromolecular compounds or prepolymers obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C03C25/36—Epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/12—General methods of coating; Devices therefor
- C03C25/16—Dipping
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Abstract
The invention provides a chopped glass fiber impregnating compound for reinforcing thermoplastic polyester resin and application thereof, wherein the impregnating compound comprises a coupling agent, a film-forming agent, a lubricating agent, a wetting agent, deionized water and the like; the solid mass of each component accounts for the total mass of the impregnating compound, and the solid mass of each component is as follows: 1.5-15% of coupling agent, 79-98% of film forming agent, 0.1-4% of lubricating agent and 0.01-2% of wetting agent. The impregnating compound has good coating effect, and the chopped glass fiber coated by the impregnating compound has good bundling property and meets the manufacturability requirement of downstream customer processing and use; the glass fiber reinforced thermoplastic polyester resin coated by the impregnating compound has good mechanical property and hydrolysis resistance, and simultaneously meets the service performance requirements of thermoplastic polyester resin composite materials in a damp and hot environment.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of impregnating compounds, in particular to a chopped glass fiber impregnating compound for reinforcing thermoplastic polyester resin and application thereof.
[ background of the invention ]
The thermoplastic polyester resin refers to a saturated polyester resin having thermoplastic properties, and mainly comprises the following resin types: polybutylene terephthalate (PBT for short), polyethylene terephthalate (PET), 1, 4-cyclohexanedimethanol terephthalate (PCT), Polycarbonate (PC), polylactic acid (PLA), and the like. Thermoplastic polyester resin plays a very important role in engineering plastics and is widely applied, wherein PBT and PC belong to one of five engineering plastics, and PLA as a completely biodegradable plastic belongs to one of hot resins developed in recent years. The thermoplastic polyester resin reinforced by glass fiber, especially chopped glass fiber, is widely applied to industries of automobiles, mobile phones, computers, household appliances and the like due to the advantages of excellent mechanical property, low shrinkage, good electrical insulation, good heat resistance and the like.
However, due to the ester functional group in the molecular structure of the thermoplastic polyester resin, the hydrolysis resistance of the resin is low, and the service performance under a damp and hot environment cannot be met, so that the application of the resin in the fields of automobiles, electronic appliances for kitchens and toilets and the like is limited to a certain extent. Meanwhile, when downstream customers modify thermoplastic resin by using glass fibers, particularly chopped glass fibers, in order to improve production efficiency, stabilize product quality and reduce production cost, the chopped glass fibers are often required to have good bundling property, difficult fluffing and convenient blanking. Therefore, the chopped glass fiber is required to simultaneously meet the service performance requirement of the composite material and the processing requirement of customer processing.
[ summary of the invention ]
Aiming at the defects in the prior art, the invention aims to provide the chopped glass fiber size for reinforcing the thermoplastic polyester resin and the application thereof, the size can be used for remarkably improving the hydrolysis resistance of the glass fiber reinforced thermoplastic polyester resin, and meanwhile, the glass fiber coated by the size has good bundling property and less fluff lumps and is convenient for downstream customers to process and use.
The invention adopts the following technical scheme: a chopped glass fiber impregnating compound for reinforcing thermoplastic polyester resin comprises a coupling agent, a film-forming agent, a lubricating agent and a wetting agent; and the solid mass of each component accounts for the total mass of the impregnating compound, and the percentage content of the solid mass of each component is as follows: 1.5-15% of coupling agent, 79-98% of film forming agent, 0.1-4% of lubricating agent and 0.01-2% of wetting agent.
Preferably, the coupling agent is a silane coupling agent with functional groups containing amino and/or epoxy groups, such as gamma-aminopropyltriethoxysilane and/or gamma-glycidoxypropyltrimethoxysilane; the amount of the coupling agent in the impregnating compound is preferably 2.5-12%, and more preferably 5-10%.
Preferably, when the amount of the epoxy functional group-containing silane coupling agent in the coupling agent is increased, the color of the composite material is whitened, but the bundling property of the fibers is decreased; therefore, in order to ensure the bundling property and the mechanical property of the fiber and meet the requirements of downstream customers, the dosage of the silane coupling agent containing the epoxy functional group in the coupling agent is not more than that of the silane coupling agent containing the amino functional group.
Preferably, the film forming agent comprises a first film forming agent, a second film forming agent and a third film forming agent, wherein the first film forming agent is epoxy emulsion, preferably phenolic epoxy emulsion, the epoxy equivalent is 150-300, and the functionality is 2.5-8;
the second film forming agent is acrylic acid modified glycidyl methacrylate (AGMA) emulsion;
the third film forming agent is polyurethane emulsion, preferably polyether polyurethane emulsion, and the weight average molecular weight is 10000-100000; the three film forming agents are matched for use, so that the three film forming agents have a remarkable synergistic effect, the glass fiber is endowed with good bundling property, and the mechanical property and hydrolysis resistance of the composite material can be remarkably improved.
Preferably, the weight ratio of the first film forming agent to the second film forming agent to the third film forming agent is 40-80: 10-50: 5-40, and preferably: 50-70: 20-40: 15-30, and the three film forming agents are used in a matching manner within the range to have a remarkable synergistic effect.
Preferably, the dosage of the film forming agent in the impregnating compound is 84-95%, and more preferably 87-93%.
Preferably, the lubricant is a nonionic lubricant, preferably a modified castor oil ester lubricant, the lubricant has good compatibility with other components, the prepared impregnating compound has good stability, and is not suitable for generating undesirable phenomena such as layering and precipitation, so that hairiness reduction of glass fibers in the processes of wire drawing forming and subsequent chopping is facilitated, the production efficiency of the glass fibers is improved, the product quality is stabilized, and meanwhile, the lubricant has a light color, and the yellow appearance color of the glass fibers and subsequent composite materials cannot be caused; the dosage of the lubricant is preferably 0.2-3.5%, and more preferably 0.5-2.5%.
Preferably, the wetting agent is preferably acetylene glycol or multi-branched unsaturated alcohol, the wetting agent has good compatibility with other components, and the addition of the wetting agent can reduce the surface tension of the impregnating compound system, promote the coating of the impregnating compound on the surface of the glass fiber, ensure that the impregnating compound is more uniformly distributed on the surface of the glass fiber, and is more favorable for the improvement of the bundling property of the glass fiber and the mechanical property of a subsequent composite material; the dosage of the wetting agent is preferably 0.05-1.5%, and more preferably 0.1-1.0%.
Preferably, the impregnating compound also comprises a pH value regulator for regulating the impregnating compound system to a required pH value range, wherein the pH value regulator is selected from one or more of glacial acetic acid, citric acid, ammonia water and the like.
Preferably, the solid content of the impregnating compound is 7-15%, and the pH value is 5-11.
The invention also aims to provide application of the impregnating compound in preparing glass fiber reinforced thermoplastic polyester resin.
The invention has the beneficial effects that:
the three components of the film forming agent in the sizing agent are mixed according to a certain proportion for use, so that the synergistic effect is achieved, and compared with the single use of the three film forming agents, the glass fiber sizing agent not only endows the glass fiber with good bundling property, but also improves the mechanical property and hydrolysis resistance of the composite material;
the impregnating compound disclosed by the invention selects reasonable components and proportion, is stable in system and has a good coating effect. The glass fiber coated by the impregnating compound completely or partially has good bundling property, less hairiness, easy blanking, convenient use for downstream customers and good manufacturability; meanwhile, the mechanical property, especially the hydrolysis resistance, of the reinforced thermoplastic polyester resin is excellent, and the service performance requirements of the thermoplastic polyester resin in the fields of automobiles, household electronic appliances and the like are met.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described by the following embodiments, but is by no means limited thereto. The following is a description of the preferred embodiments of the present invention, and should not be taken as limiting the invention, but rather as embodying the invention in its broadest form and as indicating any variations, equivalents and modifications within the spirit and scope of the present invention.
The impregnating compound used in the following examples comprises the following components:
the coupling agent is given the following grades: american Megaku advanced New materials group A1100 (gamma-aminopropyltriethoxysilane), gamma-glycidoxypropyltrimethoxysilane, Megaku advanced New materials group A-187;
the first film forming agent is given the following brand: novolac epoxy emulsion, Hansen chemical enterprise management Limited company EPI-REZ Resin 5003-W-55;
second film Forming agent: acrylic acid modified glycidyl methacrylate (AGMA) emulsion, Xian Jinrun New materials science and technology Co., Ltd, JR-3278H;
a third film forming agent: polyether urethane emulsion, Vondic 8510 available from DIC;
lubricant: modified castor oil ester, kekai chemical industry Stantex 5918;
wetting agent: alkyne diol-modified surfactant, air chemical Dynol 607.
In the embodiment of the invention, the content of deionized water accounts for 85-93% of the total mass of the impregnating compound, and the addition amount of each component in the embodiment of the invention is given in table 1, wherein the numerical value is the percentage of the solid mass of each component in the total solid mass of the impregnating compound;
table 1 table of addition of ingredients for specific examples of the present invention
Wherein, the MMA-GMA emulsion is methyl methacrylate modified glycidyl methacrylate emulsion.
The glass fiber sizing agents in the embodiments and the comparative examples of the invention are prepared by adopting a method and process equipment which are commonly used in the conventional industry: firstly, 5-10 times of deionized water is added into each component for dilution (in example 8, a certain amount of glacial acetic acid or citric acid and the like are added into the deionized water to adjust the pH value to 4-5, then A187 is added), and then the diluted components are mixed under the condition of low-speed stirring. And adding a proper amount of deionized water and a pH value regulator into the mixed emulsion to regulate the mixed emulsion to the required solid content and pH value.
The impregnating compound prepared in the above examples and comparative examples is used for producing glass fibers, and the chopped glass fiber products can be produced by a manufacturing method (such as an online chopping process or an offline chopping process) commonly used in the glass fiber industry. In the present example and comparative example, the glass fibers were unified in diameter of 13 μm and in chopped length of 3.0 mm. In the practical production of the impregnating compound, the diameter of the glass fiber can be adjusted and controlled within 6-17 mu m and the short-cut length can be adjusted and controlled within 1.5-9 mm according to the requirements of downstream customers.
The bundling property index of the obtained chopped glass fiber product is evaluated by adopting an index of the content of the hairiness, the higher the content of the hairiness, the poorer the bundling property and the poorer the manufacturability of the chopped glass fiber product, and otherwise, the better the bundling property is. The procedure for testing the hairball content was as follows: weighing 500g of chopped glass fiber products, placing the chopped glass fiber products into a three-dimensional mixer for shaking, taking the chopped glass fiber products out of the mixer after shaking for a certain time (for example, 15min), placing the chopped glass fiber products into an 8-mesh screen for screening, screening out and weighing the residual hairballs above the chopped glass fiber products, and calculating the hairball content of the chopped glass fiber products.
Then, the chopped glass fiber products obtained by the treatment of the different sizing agents are respectively melted, mixed and granulated by a double-screw extruder with PBT resin (1100-211M, Catharan artificial resin factory Co., Ltd.) and PLA resin (3100 HP, NatureWorks Co., Ltd.) as well as a proper amount of auxiliary agents such as antioxidant and lubricant, and the PBT modified material and the PLA modified material are respectively prepared. Wherein the content of the glass fiber in the PBT modified material is controlled at 30 wt%, the content of the glass fiber in the PLA modified material is controlled at 33 wt%, the modified material is fully dried, a standard test sample strip for testing and evaluation is manufactured by using an injection molding machine, and finally the performance of the composite material is tested according to the following evaluation method:
(1) the tensile strength and elongation at break were tested according to ISO-527-2 test standard;
the flexural strength and flexural modulus were tested according to ISO-178 test standards;
the notch impact strength of the simply supported beam is tested according to the ISO-179-1 test standard.
(2) Evaluation of hydrolysis resistance
PBT: placing the stretched sample strip into a saturated high-pressure accelerated aging testing machine for cooking, wherein the cooking conditions are as follows: pure water at 121 deg.C and 2atm for 50h/100h, taken out, dried and tested for tensile strength change.
PLA: placing the stretched sample strip into a constant-temperature water bath kettle for cooking, wherein the cooking conditions are as follows: pure water at 90 ℃ for 1h/2h/4h/8h, taking out and drying, and testing the change of the tensile strength.
The test results are shown in tables 2 and 3:
TABLE 2 comparison of hairiness content and mechanical properties of PBT composite materials
TABLE 3 comparison of mechanical Properties of PLA composites
As can be seen from tables 2 and 3, the chopped glass fiber product prepared by the impregnating compound disclosed by the patent has good bundling property and less hairiness, is very beneficial to production and use of downstream customers, and meanwhile, the thermoplastic polyester resin reinforced by the impregnating compound has excellent mechanical property and good hydrolysis resistance, so that the application of the thermoplastic polyester resin in industries such as automobiles, electronic appliances and the like is further expanded, and the unification of the manufacturability of the glass fiber product and the mechanical property of the composite material is achieved.
The above-mentioned embodiments only express a certain implementation mode of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A chopped glass fiber impregnating compound for reinforcing thermoplastic polyester resin is characterized by comprising a coupling agent, a film-forming agent, a lubricating agent and a wetting agent; and the solid mass of each component accounts for the total mass of the impregnating compound, and the percentage content of the solid mass of each component is as follows: 1.5-15% of coupling agent, 79-98% of film forming agent, 0.1-4% of lubricant and 0.01-2% of wetting agent; wherein the coupling agent is a silane coupling agent with functional groups containing amino and/or epoxy groups; the film forming agent comprises a first film forming agent, a second film forming agent and a third film forming agent, wherein the first film forming agent is epoxy emulsion, the second film forming agent is acrylic acid modified glycidyl methacrylate emulsion, and the third film forming agent is polyurethane emulsion; the lubricant is a nonionic lubricant; the wetting agent is an acetylenic diol or a multi-branched unsaturated alcohol surfactant.
2. The chopped glass fiber impregnating compound according to claim 1, wherein the solid mass of each component in the impregnating compound accounts for the following percentage content of the total solid mass of the impregnating compound: 2.5-12% of coupling agent, 84-95% of film forming agent, 0.2-3.5% of lubricating agent and 0.05-1.5% of wetting agent.
3. The chopped glass fiber impregnating compound according to claim 2, wherein the solid mass of each component in the impregnating compound accounts for the following percentage content of the total solid mass of the impregnating compound: 5.0-10.0% of coupling agent, 87-93% of film-forming agent, 0.5-2.5% of lubricant and 0.1-1.0% of wetting agent.
4. The chopped strand glass fiber sizing agent according to claim 1, wherein the amount of the functional group epoxy-containing coupling agent in the coupling agent is not more than the amount of the functional group amino-containing coupling agent.
5. The chopped glass fiber impregnating compound according to claim 1, wherein the first film forming agent is a phenolic epoxy emulsion, the epoxy equivalent is 150-300, and the functionality is 2.5-8; the third film forming agent is polyether polyurethane emulsion, and the weight-average molecular weight is 10000-100000.
6. The chopped glass fiber impregnating compound according to claim 1, wherein the mass ratio of the first film forming agent to the second film forming agent to the third film forming agent in the film forming agents is 40-80: 10-50: 5-40.
7. The chopped glass fiber impregnating compound according to claim 6, wherein the mass ratio of the first film forming agent to the second film forming agent to the third film forming agent in the film forming agents is 50-70: 20-40: 15-30.
8. The chopped glass fiber impregnating compound according to claim 1, further comprising a pH value regulator, wherein the pH value regulator is one or more selected from glacial acetic acid, citric acid, ammonia water and the like.
9. The chopped glass fiber impregnating compound according to claim 1, wherein the solid mass of the impregnating compound accounts for 7-15% of the total mass of the impregnating compound; the pH value of the impregnating compound is 5-11.
10. Use of the chopped glass fiber size according to any one of claims 1 to 9 in the preparation of glass fiber reinforced thermoplastic polyester resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210321824.3A CN114573249B (en) | 2022-03-29 | 2022-03-29 | Chopped glass fiber impregnating compound for reinforcing thermoplastic polyester resin and application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210321824.3A CN114573249B (en) | 2022-03-29 | 2022-03-29 | Chopped glass fiber impregnating compound for reinforcing thermoplastic polyester resin and application |
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| CN114573249B CN114573249B (en) | 2024-06-04 |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4745028A (en) * | 1985-03-29 | 1988-05-17 | Ppg Industries, Inc. | Sized glass fibers and reinforced polymers containing same |
| CN101341206A (en) * | 2005-12-07 | 2009-01-07 | Ocv智识资本有限责任公司 | Fiber size, sized reinforcements, and articles reinforced with sized reinforcements |
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