CN113492563A - Flame-retardant LCP plastic - Google Patents
Flame-retardant LCP plastic Download PDFInfo
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- CN113492563A CN113492563A CN202110781773.8A CN202110781773A CN113492563A CN 113492563 A CN113492563 A CN 113492563A CN 202110781773 A CN202110781773 A CN 202110781773A CN 113492563 A CN113492563 A CN 113492563A
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- flame retardant
- lcp plastic
- retardant
- lcp
- glass fiber
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 72
- 239000004033 plastic Substances 0.000 title claims abstract description 70
- 229920003023 plastic Polymers 0.000 title claims abstract description 70
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000003365 glass fiber Substances 0.000 claims abstract description 45
- 230000007062 hydrolysis Effects 0.000 claims abstract description 14
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 14
- 230000000655 anti-hydrolysis Effects 0.000 claims abstract description 8
- 239000011230 binding agent Substances 0.000 claims description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- XOLBLPGZBRYERU-UHFFFAOYSA-N SnO2 Inorganic materials O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 150000001718 carbodiimides Chemical group 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 4
- BZQKBFHEWDPQHD-UHFFFAOYSA-N 1,2,3,4,5-pentabromo-6-[2-(2,3,4,5,6-pentabromophenyl)ethyl]benzene Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1CCC1=C(Br)C(Br)=C(Br)C(Br)=C1Br BZQKBFHEWDPQHD-UHFFFAOYSA-N 0.000 claims description 3
- DEIGXXQKDWULML-UHFFFAOYSA-N 1,2,5,6,9,10-hexabromocyclododecane Chemical compound BrC1CCC(Br)C(Br)CCC(Br)C(Br)CCC1Br DEIGXXQKDWULML-UHFFFAOYSA-N 0.000 claims description 3
- NBEJKUFPCUUBHV-UHFFFAOYSA-N 1,2-dibromo-3-isocyanatopropane Chemical compound BrCC(Br)CN=C=O NBEJKUFPCUUBHV-UHFFFAOYSA-N 0.000 claims description 3
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 3
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 3
- 239000007983 Tris buffer Substances 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 claims description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 3
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 3
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- WHHGLZMJPXIBIX-UHFFFAOYSA-N decabromodiphenyl ether Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br WHHGLZMJPXIBIX-UHFFFAOYSA-N 0.000 claims description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 3
- 239000000347 magnesium hydroxide Substances 0.000 claims description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 150000004767 nitrides Chemical class 0.000 claims description 3
- -1 octabromoether Chemical compound 0.000 claims description 3
- XZTOTRSSGPPNTB-UHFFFAOYSA-N phosphono dihydrogen phosphate;1,3,5-triazine-2,4,6-triamine Chemical compound NC1=NC(N)=NC(N)=N1.OP(O)(=O)OP(O)(O)=O XZTOTRSSGPPNTB-UHFFFAOYSA-N 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 3
- 229910052723 transition metal Inorganic materials 0.000 claims description 3
- 150000003624 transition metals Chemical class 0.000 claims description 3
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 claims description 3
- JZZBTMVTLBHJHL-UHFFFAOYSA-N tris(2,3-dichloropropyl) phosphate Chemical compound ClCC(Cl)COP(=O)(OCC(Cl)CCl)OCC(Cl)CCl JZZBTMVTLBHJHL-UHFFFAOYSA-N 0.000 claims description 3
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 150000001247 metal acetylides Chemical class 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 229920000106 Liquid crystal polymer Polymers 0.000 description 52
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 52
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BDNKZNFMNDZQMI-UHFFFAOYSA-N 1,3-diisopropylcarbodiimide Chemical compound CC(C)N=C=NC(C)C BDNKZNFMNDZQMI-UHFFFAOYSA-N 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- QOSSAOTZNIDXMA-UHFFFAOYSA-N Dicylcohexylcarbodiimide Chemical compound C1CCCCC1N=C=NC1CCCCC1 QOSSAOTZNIDXMA-UHFFFAOYSA-N 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 150000008064 anhydrides Chemical group 0.000 description 1
- 230000003471 anti-radiation Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- BGRWYRAHAFMIBJ-UHFFFAOYSA-N diisopropylcarbodiimide Natural products CC(C)NC(=O)NC(C)C BGRWYRAHAFMIBJ-UHFFFAOYSA-N 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- SQEHYBILZVXINP-UHFFFAOYSA-N n'-tert-butyl-n-propan-2-ylmethanediimine Chemical compound CC(C)N=C=NC(C)(C)C SQEHYBILZVXINP-UHFFFAOYSA-N 0.000 description 1
- IDVWLLCLTVBSCS-UHFFFAOYSA-N n,n'-ditert-butylmethanediimine Chemical compound CC(C)(C)N=C=NC(C)(C)C IDVWLLCLTVBSCS-UHFFFAOYSA-N 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
Images
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- 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
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/0366—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement reinforced, e.g. by fibres, fabrics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/554—Wear resistance
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Ceramic Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses a flame-retardant LCP plastic, which comprises an LCP plastic body, wherein modified glass fibers are added into the LCP plastic body, and a flame-retardant layer, a radiation-proof layer, an anti-hydrolysis layer and a wear-resistant layer are sequentially arranged on the surface of the LCP plastic body from bottom to top. According to the flame-retardant LCP plastic, the flame-retardant layer, the radiation-proof layer, the hydrolysis-resistant layer and the wear-resistant layer are sequentially arranged on the surface of the LCP plastic body from bottom to top, so that the prepared LCP plastic has corresponding flame-retardant, radiation-proof, hydrolysis-resistant and wear-resistant performances, and can meet the use requirements in the field of electric appliances.
Description
Technical Field
The invention relates to the field of materials, in particular to a flame-retardant LCP plastic.
Background
LCP is liquid crystal polymer, is a novel macromolecular material, by fields such as wide application in electron, automobile manufacturing, sports goods, LCP plastics can be used to make electrical apparatus parts such as hot-blast section of thick bamboo, hair-perming ware, printed circuit board, etc., and the life of electrical apparatus is longer, can contact the environment of high temperature, sunshine in daily use often, consequently, need LCP plastics to have excellent weatherability, simultaneously, the circuit is in case the short circuit probably leads to the conflagration, consequently, also need LCP plastics to have excellent flame retardant efficiency.
Accordingly, there is still a need for advancement and development of the prior art.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a flame-retardant LCP plastic, aiming at solving the technical problem of poor flame-retardant property of the existing LCP plastic.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides a fire-retardant LCP plastics, wherein, includes LCP plastic body, this internal modified glass fiber that has of LCP plastic, LCP plastic body's surface is by supreme fire-retardant layer, the layer of protecting against radiation, anti-hydrolysis layer and the wearing layer of being equipped with in proper order down.
The flame-retardant LCP plastic is characterized in that the mass of the modified glass fiber accounts for 20-30% of the mass of the LCP plastic body.
The flame-retardant LCP plastic is characterized in that the preparation process of the modified glass fiber comprises the following steps:
adding the glass fiber into a sodium hydroxide solution, and stirring and reacting for 7-8h at 50-60 ℃ to obtain pretreated glass fiber;
adding the pretreated glass fiber into acetone solution of methacryloxypropyl trimethoxysilane, and stirring and reacting for 1h at the temperature of 90-100 ℃ to obtain grafted glass fiber;
and mixing the grafted glass fiber with water, adding sodium persulfate, heating to 90-100 ℃, stirring for reaction for 1h, adding maleic anhydride, heating to 130-150 ℃, and performing reflux reaction for 5-7h to obtain the modified glass fiber.
The flame-retardant LCP plastic comprises a flame retardant layer and a flame retardant layer, wherein the flame retardant layer contains 2-10 wt% of flame retardant.
The flame-retardant LCP plastic is characterized in that the flame retardant consists of a flame retardant A and a flame retardant B, wherein the weight ratio of the flame retardant A to the flame retardant B is 1:3-15: 1.
The flame retardant LCP plastic is characterized in that the flame retardant A is one of tris (2, 3-dichloropropyl) phosphate, ammonium polyphosphate, octabromoether, triphenyl phosphate, hexabromocyclododecane, decabromodiphenyl ether, decabromodiphenylethane or tris (2, 3-dibromopropyl) isocyanate, and the flame retardant B is one of magnesium hydroxide, aluminum hydroxide, antimony trioxide, zinc borate or melamine pyrophosphate.
The flame-retardant LCP plastic is characterized in that the radiation-proof layer comprises nano tin dioxide powder, an inorganic binder and an organic binder.
The flame-retardant LCP plastic comprises an anti-hydrolysis layer and a flame-retardant LCP plastic layer, wherein the anti-hydrolysis layer contains 0.01-2 wt% of an anti-hydrolysis agent, and the anti-hydrolysis agent is a carbodiimide or polycarbodiimide compound.
The flame-retardant LCP plastic is characterized in that the wear-resistant layer comprises wear-resistant particles and a binder. The flame-retardant LCP plastic is characterized in that the wear-resistant particles are at least one of carbide, nitride and oxide of transition metal.
Has the advantages that: according to the flame-retardant LCP plastic prepared by the invention, on one hand, the strength of the LCP plastic can be improved by adding the modified glass fiber in the LCP plastic body, and the problem of poor compatibility between the glass fiber and the LCP plastic is solved by the modified glass fiber, so that the LCP plastic added with the modified glass fiber can still keep good stability and the strength is improved, and on the other hand, the flame-retardant layer, the radiation-proof layer, the hydrolysis-resistant layer and the wear-resistant layer are sequentially arranged on the surface of the LCP plastic body from bottom to top, so that the prepared LCP plastic can have corresponding flame-retardant, radiation-proof, hydrolysis-resistant and wear-resistant performances, and can meet the use requirements in the field of electric appliances.
Drawings
FIG. 1 is a schematic structural diagram of a flame-retardant LCP plastic of the invention.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
As shown in fig. 1, the invention provides a flame-retardant LCP plastic, which comprises an LCP plastic body 10, wherein modified glass fibers are added into the LCP plastic body 10, and a flame-retardant layer 20, an anti-radiation layer 30, an anti-hydrolysis layer 40, and an abrasion-resistant layer 50 are sequentially arranged on the surface of the LCP plastic body 10 from bottom to top.
According to the LCP plastic, the modified glass fiber is added into the LCP plastic body, so that the strength of the LCP plastic can be improved, and meanwhile, the problem of poor compatibility between the glass fiber and the LCP plastic is solved through the modified glass fiber, so that the LCP plastic added with the modified glass fiber can still keep good stability, and the strength is improved.
Furthermore, in the invention, the surface of the LCP plastic body is sequentially provided with the flame-retardant layer, the radiation-proof layer, the hydrolysis-resistant layer and the wear-resistant layer from bottom to top, so that the prepared LCP plastic has corresponding flame-retardant, radiation-proof, hydrolysis-resistant and wear-resistant performances, and can meet the use requirements in the field of electric appliances.
Further, in the invention, the mass of the modified glass fiber accounts for 20-30% of the mass of the LCP plastic body. If the amount of the modified glass fibers added is too low, the strength of the LCP plastic body is not significantly improved, and if the amount of the modified glass fibers added is too high, the hardness of the LCP plastic body is increased, which is not favorable for the subsequent processing.
Further, in the present invention, the process for preparing the modified glass fiber comprises the steps of:
s10, adding the glass fiber into a sodium hydroxide solution, and stirring and reacting for 7-8h at 50-60 ℃ to obtain pretreated glass fiber;
s20, adding the pretreated glass fiber into acetone solution of methacryloxypropyl trimethoxysilane, and stirring to react for 1h at 90-100 ℃ to obtain grafted glass fiber;
s30, mixing the grafted glass fiber with water, adding sodium persulfate, heating to 90-100 ℃, stirring for reaction for 1h, adding maleic anhydride, heating to 130-150 ℃, and performing reflux reaction for 5-7h to obtain the modified glass fiber.
In the invention, the strength of LCP can be enhanced by adding the modified glass fiber, and meanwhile, the compatibility between the glass fiber and the LCP can be effectively improved by introducing a large amount of anhydride groups on the surface of the modified glass fiber.
Further, in the invention, the flame retardant layer contains 2 wt% -10 wt% of flame retardant, and the flame retardant consists of flame retardant A and flame retardant B, wherein the weight ratio of the flame retardant A to the flame retardant B is 1:3-15:1, the flame retardant A is one of tris (2, 3-dichloropropyl) phosphate, ammonium polyphosphate, octabromoether, triphenyl phosphate, hexabromocyclododecane, decabromodiphenyl ether, decabromodiphenylethane or tris (2, 3-dibromopropyl) isocyanate, and the flame retardant B is one of magnesium hydroxide, aluminum hydroxide, antimony trioxide, zinc borate or melamine pyrophosphate.
Furthermore, the radiation protection layer comprises nano tin dioxide powder, inorganic binder and organic binder. In the invention, preferably, the inorganic binder is sodium silicate, the organic binder is acrylic emulsion, and the added inorganic binder and organic binder can effectively disperse the nano-grade tin dioxide powder on one hand and tightly bond the radiation-proof layer, the flame-retardant layer and the hydrolysis-resistant layer on the other hand.
Furthermore, the hydrolysis-resistant layer contains 0.01 wt% -2 wt% of hydrolysis-resistant agent, and the hydrolysis-resistant agent is carbodiimide or polycarbodiimide compounds. In the present invention, the hydrolysis inhibitor may be selected from dicyclohexylcarbodiimide, diisopropylcarbodiimide, di-t-butylcarbodiimide, t-butylisopropylcarbodiimide, methylcyclohexanecarbodiimide, 1, 3-benzenecarbodiimide, and 1, 5-naphthalenedicarbodiimide, and since carbodiimide is easily decomposed by heat, it is preferable to select carbodiimide having a high molecular weight.
Further, the wear-resistant layer comprises wear-resistant particles and a binder, wherein the wear-resistant particles are at least one of carbides, nitrides and oxides of transition metals.
In summary, the strength of the LCP plastic can be improved by adding the modified glass fiber in the LCP plastic body, and the modified glass fiber solves the problem of poor compatibility between the glass fiber and the LCP plastic, so that the LCP plastic with the modified glass fiber added can still maintain good stability, and the strength is improved.
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. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a fire-retardant LCP plastics, its characterized in that, includes LCP plastic body, this internal modified glass fiber that has added of LCP plastic body, LCP plastic body's surface is by supreme fire-retardant layer, the layer of protecting against radiation, anti-hydrolysis layer and the wearing layer of being equipped with in proper order down.
2. The flame retardant LCP plastic of claim 1, wherein the mass of the modified glass fibers is 20% to 30% of the mass of the LCP plastic body.
3. The flame retardant LCP plastic of claim 2, wherein the preparation process of the modified glass fiber comprises the steps of:
adding the glass fiber into a sodium hydroxide solution, and stirring and reacting for 7-8h at 50-60 ℃ to obtain pretreated glass fiber;
adding the pretreated glass fiber into acetone solution of methacryloxypropyl trimethoxysilane, and stirring and reacting for 1h at the temperature of 90-100 ℃ to obtain grafted glass fiber;
and mixing the grafted glass fiber with water, adding sodium persulfate, heating to 90-100 ℃, stirring for reaction for 1h, adding maleic anhydride, heating to 130-150 ℃, and performing reflux reaction for 5-7h to obtain the modified glass fiber.
4. The flame retardant LCP plastic of claim 1, wherein the flame retardant layer contains 2 wt% to 10 wt% of a flame retardant.
5. The flame retardant LCP plastic according to claim 4, wherein the flame retardant consists of flame retardant A and flame retardant B, wherein the weight ratio of flame retardant A to flame retardant B is 1:3-15: 1.
6. The flame retardant LCP plastic according to claim 5, wherein the flame retardant A is one of tris (2, 3-dichloropropyl) phosphate, ammonium polyphosphate, octabromoether, triphenyl phosphate, hexabromocyclododecane, decabromodiphenyl ether, decabromodiphenyl ethane or tris (2, 3-dibromopropyl) isocyanate, and the flame retardant B is one of magnesium hydroxide, aluminum hydroxide, antimony trioxide, zinc borate or melamine pyrophosphate.
7. The flame-retardant LCP plastic according to claim 1, wherein the radiation-proof layer comprises nano-tin dioxide powder, inorganic binder and organic binder.
8. The flame retardant LCP plastic of claim 1, wherein the hydrolysis resistant layer contains 0.01 wt% to 2 wt% of a hydrolysis resistant agent, and the hydrolysis resistant agent is a carbodiimide or polycarbodiimide compound.
9. The flame retardant LCP plastic of claim 1, wherein the abrasion resistant layer includes abrasion resistant particles and a binder.
10. The flame retardant LCP plastic of claim 9, wherein the wear resistant particles are at least one of carbides, nitrides, oxides of transition metals.
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| CN110894367A (en) * | 2019-11-28 | 2020-03-20 | 江苏胜帆电子科技有限公司 | Preparation method of high-strength LCP composite material |
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