CN115322552A - Low-smoke low-heat-release polycarbonate material for rail transit interior decoration - Google Patents
Low-smoke low-heat-release polycarbonate material for rail transit interior decoration Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 66
- 239000000779 smoke Substances 0.000 title claims abstract description 61
- 229920000515 polycarbonate Polymers 0.000 title claims abstract description 52
- 239000004417 polycarbonate Substances 0.000 title claims abstract description 52
- 238000005034 decoration Methods 0.000 title claims abstract description 20
- 229920002545 silicone oil Polymers 0.000 claims abstract description 48
- 229920001577 copolymer Polymers 0.000 claims abstract description 37
- 229920000402 bisphenol A polycarbonate polymer Polymers 0.000 claims abstract description 34
- 239000003063 flame retardant Substances 0.000 claims abstract description 30
- 239000012745 toughening agent Substances 0.000 claims abstract description 30
- 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 abstract description 29
- 239000011256 inorganic filler Substances 0.000 claims abstract description 26
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 26
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 20
- 239000004431 polycarbonate resin Substances 0.000 claims abstract description 14
- 229920005668 polycarbonate resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- -1 methyl hydrogen Chemical compound 0.000 claims description 30
- 239000003963 antioxidant agent Substances 0.000 claims description 26
- 230000003078 antioxidant effect Effects 0.000 claims description 26
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 238000007334 copolymerization reaction Methods 0.000 claims description 18
- 239000000314 lubricant Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 14
- 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 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000003365 glass fiber Substances 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 239000010703 silicon Substances 0.000 claims description 10
- LAUIXFSZFKWUCT-UHFFFAOYSA-N [4-[2-(4-phosphonooxyphenyl)propan-2-yl]phenyl] dihydrogen phosphate Chemical compound C=1C=C(OP(O)(O)=O)C=CC=1C(C)(C)C1=CC=C(OP(O)(O)=O)C=C1 LAUIXFSZFKWUCT-UHFFFAOYSA-N 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 8
- HLMZZKOTBSVABY-UHFFFAOYSA-N benzene-1,3-dicarboxylic acid;carbonic acid Chemical compound OC(O)=O.OC(=O)C1=CC=CC(C(O)=O)=C1 HLMZZKOTBSVABY-UHFFFAOYSA-N 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- OWICEWMBIBPFAH-UHFFFAOYSA-N (3-diphenoxyphosphoryloxyphenyl) diphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=C(OP(=O)(OC=2C=CC=CC=2)OC=2C=CC=CC=2)C=CC=1)(=O)OC1=CC=CC=C1 OWICEWMBIBPFAH-UHFFFAOYSA-N 0.000 claims description 5
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 claims description 4
- SJGXVPFYFQTPLK-UHFFFAOYSA-N 1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene-2,2,4,4,6,6-hexamine Chemical compound NP1(N)=NP(N)(N)=NP(N)(N)=N1 SJGXVPFYFQTPLK-UHFFFAOYSA-N 0.000 claims description 2
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 2
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 2
- 239000003086 colorant Substances 0.000 claims description 2
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 claims description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 2
- 239000004611 light stabiliser Substances 0.000 claims description 2
- 239000000178 monomer Substances 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- 229920003216 poly(methylphenylsiloxane) Polymers 0.000 claims description 2
- 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 2
- 239000010456 wollastonite Substances 0.000 claims description 2
- 229910052882 wollastonite Inorganic materials 0.000 claims description 2
- DVLZBVMXRUGNTR-UHFFFAOYSA-N C(C=C1)=CC=C1NP1N=PN=P[N]1 Chemical compound C(C=C1)=CC=C1NP1N=PN=P[N]1 DVLZBVMXRUGNTR-UHFFFAOYSA-N 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 19
- 238000012360 testing method Methods 0.000 description 16
- 229920000642 polymer Polymers 0.000 description 14
- 238000002485 combustion reaction Methods 0.000 description 13
- 238000002360 preparation method Methods 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 description 8
- 125000001931 aliphatic group Chemical group 0.000 description 5
- 229930040373 Paraformaldehyde Natural products 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 4
- 239000004926 polymethyl methacrylate Substances 0.000 description 4
- 229920006324 polyoxymethylene Polymers 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 150000003384 small molecules Chemical class 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 125000005587 carbonate group Chemical group 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- QQVIHTHCMHWDBS-UHFFFAOYSA-L isophthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC(C([O-])=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-L 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 150000002903 organophosphorus compounds Chemical class 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 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
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
- C08L69/005—Polyester-carbonates
Abstract
The invention discloses a low-smoke low-heat-release polycarbonate material for rail transit interior decoration, which comprises the following components in parts by weight: 45-75 parts of polycarbonate resin, 5-10 parts of toughening agent, 8-15 parts of flame retardant, 15-25 parts of inorganic filler, 0-3 parts of silicone oil and 0-5 parts of other auxiliary agents; the polycarbonate resin comprises a isophthalate-carbonate copolymer and an auxiliary resin; the weight average molecular weight of the isophthalate-carbonate copolymer is 28000g/mol, and the auxiliary resin is branched bisphenol A polycarbonate or polydimethylsiloxane-bisphenol A polycarbonateAny one or two of the ester copolymers are mixed according to any proportion. The polycarbonate material of the invention has a smoke density (Ds (4)) of less than 300 after 4 minutes, a smoke density integral (VOF (4)) as a function of time of4 minutes of less than 600, and maximum average heat release rates (MAHRE) of less than 90kW/m 2 。
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to a low-smoke low-heat-release polycarbonate material for rail transit interior decoration.
Background
Polycarbonate (PC) is widely used in rail transit interior trim due to its excellent impact resistance and processability, and the requirement for flame retardancy of interior trim is much higher than that of conventional electric appliances because rail vehicles are personnel-intensive areas. At present, the flame retardant performance of polycarbonate is generally improved by adding a halogen-containing or halogen-free flame retardant, but the addition of a flame retardant (especially a halogen-containing flame retardant) generates a large amount of smoke after being ignited, and the heat release rate after being ignited is high. When a combustion accident occurs in a narrow closed space, the high smoke density is easy to accelerate the oxygen deficiency speed of people in the closed space; and an excessively high heat release rate causes instantaneous heat surge to cause structural damage to the vehicle compartment or release of more harmful gases. It is therefore a significant challenge in rail transit applications how to effectively reduce the smoke density and heat release rate of rail transit interior materials to meet flame retardant standards.
In this regard, in the patent having been published under application number CN201480024662.0 entitled train interior components with low smoke and low heat release and method of making the same, there is disclosed a railway interior component (seat cover and cladding) comprising a thermoplastic composition comprising: a first polymer comprising bisphenol a carbonate units and monoaryl arylate units, or a second polymer comprising bisphenol a carbonate units, monoaryl arylate units, and siloxane units, or a combination comprising at least one of the foregoing polymers; and an organophosphorus compound. Samples of the thermoplastic composition disclosed in this patent have: a smoke density after 4 minutes (Ds 4) equal to or less than 300, an integral of smoke density as a function of time up to 4 minutes (VOF 4) equal to or less than 600, a Maximum Average Heat Release (MAHRE) equal to or less than 90kW/m2, and a multi-axial impact ductility of 100%. However, the polycarbonate synthesis technology used in the patent is relatively complex, the preparation cost is high, and the market-oriented production and manufacturing cannot be performed, so that the final product is expensive in the actual application process, and the demand of people cannot be met.
Disclosure of Invention
The invention aims to solve the technical problems of high smoke density and high heat release rate of the rail transit interior material in the prior art; a low-smoke low-heat-release polycarbonate material for rail transit interior decoration is provided, so that the technical effects of effectively reducing the smoke density and the heat release rate of the material are achieved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a low-smoke low-heat-release polycarbonate material for rail transit interior decoration comprises the following components in parts by weight: 45-75 parts of polycarbonate resin, 5-10 parts of toughening agent, 8-15 parts of flame retardant, 15-25 parts of inorganic filler, 0-3 parts of silicone oil and 0-5 parts of other auxiliary agent;
the polycarbonate resin comprises a isophthalate-carbonate copolymer and an auxiliary resin;
wherein the weight average molecular weight of the poly (isophthalate-carbonate) copolymer is 28000g/mol, and the structure is as follows:
the auxiliary resin is any one or a mixture of two of branched bisphenol A polycarbonate or polydimethylsiloxane-bisphenol A polycarbonate copolymer according to any proportion.
Further, the polycarbonate resin has a content of the isophthalate-carbonate copolymer of 60% or more.
Further, the branched bisphenol A polycarbonate has a weight average molecular weight of 35000g/mol and a monomer structure as follows:
wherein R is 1 -R 4 Independently of one another and each represents C 1 -C 10 Alkyl radical, R 5 -R 7 Independently of one another and independently of one another represent hydrogen or C 1 -C 10 An alkyl group.
Further, the polydimethylsiloxane-bisphenol A polycarbonate copolymer has the weight average molecular weight of 23500g/mol, and the structure is as follows:
further, the toughening agent is a mixture of one or more of MBS toughening agent, EMA toughening agent, EBA toughening agent and siloxane-containing copolymerization toughening agent according to any proportion.
Further, the silicon content of the siloxane-containing copolymerized toughener is greater than 90%.
Further, the flame retardant is any one of bisphenol A diphosphate (BPADP), tetraphenyl Resorcinol Diphosphate (RDP), ammonium polyphosphate, triphenyl phosphate, hexaamino cyclotriphosphazene or hexaphenyl amino cyclotriphosphazene.
Further, the inorganic filler is any one of chopped glass fiber, glass fiber powder, wollastonite or talcum powder.
Further, the silicone oil is a mixture composed of any one or more than two of methyl silicone oil, ethyl silicone oil, phenyl silicone oil, methyl hydrogen-containing silicone oil, methyl phenyl silicone oil, methyl chlorophenyl silicone oil, methyl ethoxy silicone oil, methyl trifluoro propyl silicone oil, methyl vinyl silicone oil, methyl hydroxyl silicone oil, ethyl hydrogen-containing silicone oil, hydroxyl hydrogen-containing silicone oil or cyanogen-containing silicone oil according to any proportion.
Further, the other auxiliary agent is any one or a mixture of more than two of an antioxidant, a lubricant, a light stabilizer, an anti-dripping agent or a coloring agent according to any proportion.
The invention has the beneficial effects that:
1. the polycarbonate resin in the polycarbonate material is compounded by using the poly (isophthalate) -carbonate copolymer and one of branched bisphenol A polycarbonate or polydimethylsiloxane-bisphenol A polycarbonate copolymer, so that the smoke density and the heat release rate of the polycarbonate material can be effectively reduced. Specifically, the polyisophthalate in the polyisophthalate-carbonate copolymer belongs to aliphatic polymers, and the smoke generation amount of the polyisophthalate in the combustion process is small due to the high small molecular content of the polyisophthalate, so that the combustion smoke density of the material can be effectively controlled; meanwhile, the polymer can be expanded violently in the heating process so as to take away a large amount of heat, so that the polymer can be combusted only by high irradiation energy, and the heat release rate of the material can be controlled effectively.
2. According to the invention, the inorganic filler with higher content is added into the material, so that the content of the polycarbonate resin is reduced, the material can be burnt only by absorbing more energy, and the smoke density and the heat release rate of the material are further reduced. Meanwhile, the content of the inorganic filler is increased, the content of the polycarbonate resin is reduced, the overall raw material cost of the material can be reduced, and the economic benefit of the final polycarbonate material is improved.
3. The raw materials of the components adopted by the invention are all commercial products which are commercialized at home at present, the traditional blending modification method is adopted during preparation, and compared with the low-smoke low-heat-release polycarbonate material which is prepared by adopting foreign imported materials and matching a special polymerization mode in the prior art, the production cost of the low-smoke low-heat-release polycarbonate material can be greatly reduced, so that the application of the low-smoke low-heat-release polycarbonate material in the field of domestic rail transit is widened.
Detailed Description
The embodiment of the invention provides a low-smoke low-heat-release polycarbonate material for rail transit interior trim, so as to solve the technical problems of high smoke density and high heat release rate of the rail transit interior trim material in the prior art.
The general idea adopted by the invention is as follows:
a low-smoke low-heat-release polycarbonate material for rail transit interior decoration comprises the following components in parts by weight: 45-75 parts of polycarbonate resin, 5-10 parts of toughening agent, 8-15 parts of flame retardant, 15-25 parts of inorganic filler, 0-3 parts of silicone oil and 0-5 parts of other auxiliary agents;
the polycarbonate resin comprises a isophthalate-carbonate copolymer and an auxiliary resin;
wherein the weight average molecular weight of the poly (isophthalate-carbonate) copolymer is 28000g/mol, and the structure is as follows:
the auxiliary resin is any one or a mixture of two of branched bisphenol A polycarbonate or polydimethylsiloxane-bisphenol A polycarbonate copolymer according to any proportion.
First, those skilled in the art know that aliphatic polymers such as Polymethylmethacrylate (PMMA), polyoxymethylene (POM), and the like have a low smoke density on combustion, but a high heat release rate; while aromatic polymers such as Polycarbonate (PC) have a high smoke density on combustion but a low heat release rate. The reason for this is that: the smoke generation is closely related to the content of small molecules in the material, the smoke density of the material after combustion is lower because the aliphatic polymer contains a large amount of small molecules, and the smoke density of the material after combustion is higher because the aromatic polymer contains less small molecules. The heat release rate is related to the char formation rate of the polymer, and generally, the faster the char formation rate, the lower the heat release rate, the lower the char formation rate of the aliphatic polymer (e.g., the char formation rates of the materials such as polymethyl methacrylate (PMMA) and Polyoxymethylene (POM) are all 0%) so that the heat release rate of combustion is high, and the higher the char formation rate of the aromatic polymer (e.g., the char formation rate of Polycarbonate (PC) is 24.9%) so that the heat release rate of combustion is low.
The poly (isophthalate) in the poly (isophthalate-carbonate) copolymer disclosed by the embodiment of the invention belongs to aliphatic polymers, and the smoke generation amount is small in the combustion process, so that the combustion smoke density of the material can be effectively controlled; meanwhile, the copolymer is a carbonate copolymer, so that the char formation rate is high during combustion, and the heat release rate is low during combustion; and the copolymer can be expanded violently in the heating process so as to take away a large amount of heat, so that the copolymer can be combusted only by high irradiation energy, and further the heat release rate of the material can be further effectively controlled.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be described more clearly and completely below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Similarly, the singular forms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one, unless the context clearly dictates otherwise. The terms "comprises," "comprising," or the like, mean that the elements or items listed before "comprises" or "comprising" encompass the features, integers, steps, operations, elements, and/or components listed after "comprising" or "comprising," and do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Example 1
A low-smoke low-heat-release polycarbonate material for rail transit interior decoration comprises the following components in parts by weight: 40 parts of poly (m-phthalate) -carbonate copolymer, 17 parts of polydimethylsiloxane-bisphenol A polycarbonate copolymer, 9 parts of siloxane-containing copolymerization toughening agent, 9 parts of flame retardant, 25 parts of inorganic filler, 0 part of silicone oil and 1 part of other auxiliary agents.
Wherein the weight average molecular weight of the isophthalate-carbonate copolymer is 28000g/mol. The polydimethylsiloxane-bisphenol A polycarbonate copolymer had a weight average molecular weight of 23500g/mol. The silicon content in the siloxane-containing copolymerization toughening agent is 98 percent. The flame retardant is tetraphenyl resorcinol diphosphate. The inorganic filler is glass fiber powder, and the length of the glass fiber powder is 100 mu m. The other auxiliary agents comprise 0.5 part of anti-dripping agent, 0.2 part of antioxidant and 0.3 part of lubricant. The anti-dripping agent is SAN coated polytetrafluoroethylene, the antioxidant is 168 antioxidant, and the lubricant is PETS.
A preparation method of the low-smoke low-heat-release polycarbonate material for the rail transit interior decoration comprises the following steps:
(1) Weighing the components in parts by weight;
(2) Putting the components weighed in the step (1) into a high-speed mixer in sequence and mixing uniformly;
(3) And (3) melting, mixing, extruding, cooling, granulating and packaging the uniformly mixed materials in the step (2) by a double-screw extruder to obtain the polycarbonate material.
Example 2
A low-smoke low-heat-release polycarbonate material for rail transit interior decoration comprises the following components in parts by weight: 45 parts of a poly (m-phthalic acid ester) -carbonate copolymer, 6 parts of branched bisphenol A polycarbonate, 11 parts of a polydimethylsiloxane-bisphenol A polycarbonate copolymer, 10 parts of a siloxane-containing copolymerization toughening agent, 15 parts of a flame retardant, 15 parts of an inorganic filler, 1 part of silicone oil and 1 part of other additives.
Wherein the weight average molecular weight of the isophthalate-carbonate copolymer is 28000g/mol. The weight average molecular weight of the branched bisphenol A polycarbonate is 35000g/mol. The polydimethylsiloxane-bisphenol A polycarbonate copolymer had a weight average molecular weight of 23500g/mol. The silicon content of the siloxane-containing copolymerization flexibilizer is 98 percent. The flame retardant is bisphenol A diphosphate. The inorganic filler is talcum powder, and the specification of the talcum powder is 2000 meshes. The silicone oil is methyl silicone oil, and the viscosity of the silicone oil is 2000Pa/s. The other auxiliary agents comprise 0.5 part of anti-dripping agent, 0.2 part of antioxidant and 0.3 part of lubricant. The anti-dripping agent is SAN coated polytetrafluoroethylene, the antioxidant is 168 antioxidant, and the lubricant is PETS.
The preparation method of the low-smoke low-heat-release polycarbonate material for the rail transit interior trim in the embodiment is the same as that in the embodiment 1.
Example 3
A low-smoke low-heat-release polycarbonate material for rail transit interior decoration comprises the following components in parts by weight: 45 parts of a poly (m-phthalic acid ester) -carbonate copolymer, 17 parts of branched bisphenol A polycarbonate, 8 parts of a siloxane-containing copolymerization toughening agent, 15 parts of a flame retardant, 15 parts of an inorganic filler, 0.5 part of silicone oil and 1 part of other auxiliaries.
Wherein the weight average molecular weight of the isophthalate-carbonate copolymer is 28000g/mol. The weight average molecular weight of the branched bisphenol A polycarbonate is 35000g/mol. The silicon content in the siloxane-containing copolymerization toughening agent is 98 percent. The flame retardant is tetraphenyl resorcinol diphosphate. The inorganic filler is talcum powder, and the specification of the talcum powder is 2000 meshes. The silicone oil is methyl silicone oil, and the viscosity of the silicone oil is 2000Pa/s. The other auxiliary agents comprise 0.5 part of anti-dripping agent, 0.2 part of antioxidant and 0.3 part of lubricant. The anti-dripping agent is SAN coated polytetrafluoroethylene, the antioxidant is 168 antioxidant, and the lubricant is PETS.
The preparation method of the low-smoke low-heat-release polycarbonate material for the rail transit interior trim in the embodiment is the same as that in the embodiment 1.
Example 4
A low-smoke low-heat-release polycarbonate material for rail transit interior decoration comprises the following components in parts by weight: 72 parts of poly (m-phthalic acid ester) -carbonate copolymer, 5 parts of siloxane-containing copolymerization toughening agent, 8 parts of flame retardant, 15 parts of inorganic filler, 1 part of silicone oil and 1 part of other auxiliary agents.
Wherein the weight average molecular weight of the isophthalate-carbonate copolymer is 28000g/mol. The silicon content in the siloxane-containing copolymerization toughening agent is 98 percent. The flame retardant is bisphenol A diphosphate. The inorganic filler is chopped glass fiber, and the length of the chopped glass fiber is 4.5mm. The silicone oil is methyl silicone oil, and the viscosity of the silicone oil is 2000Pa/s. The other auxiliary agents comprise 0.5 part of anti-dripping agent, 0.2 part of antioxidant and 0.3 part of lubricant. The anti-dripping agent is SAN coated polytetrafluoroethylene, the antioxidant is 168 antioxidant, and the lubricant is PETS.
The preparation method of the low-smoke low-heat-release polycarbonate material for the rail transit interior trim in the embodiment is the same as that in the embodiment 1.
Comparative example 1
A polycarbonate material comprises the following components in parts by weight: 62 parts of branched bisphenol A polycarbonate, 10 parts of siloxane-containing copolymerization toughening agent, 15 parts of flame retardant, 15 parts of inorganic filler, 1 part of silicone oil and 1 part of other auxiliary agent.
Wherein the branched bisphenol A polycarbonate has a weight average molecular weight of 35000g/mol. The silicon content in the siloxane-containing copolymerization toughening agent is 98 percent. The flame retardant is bisphenol A diphosphate. The inorganic filler is talcum powder, and the specification of the talcum powder is 2000 meshes. The silicone oil is methyl silicone oil, and the viscosity of the silicone oil is 2000Pa/s. The other auxiliary agents comprise 0.5 part of anti-dripping agent, 0.2 part of antioxidant and 0.3 part of lubricant. The anti-dripping agent is SAN coated polytetrafluoroethylene, the antioxidant is 168 antioxidant, and the lubricant is PETS.
The preparation method of one of the polycarbonate materials described above in this comparative example was the same as the preparation method in example 1.
This comparative example differs from example 2 above in that the isophthalate-carbonate copolymer and the polydimethylsiloxane-bisphenol A polycarbonate copolymer in the components were all replaced by branched bisphenol A polycarbonate.
Comparative example 2
A polycarbonate material comprises the following components in parts by weight: 62 parts of polydimethylsiloxane-bisphenol A polycarbonate copolymer, 10 parts of siloxane-containing copolymerization toughening agent, 15 parts of flame retardant, 15 parts of inorganic filler, 1 part of silicone oil and 1 part of other auxiliary agent.
Wherein the polydimethylsiloxane-bisphenol A polycarbonate copolymer has a weight average molecular weight of 23500g/mol. The silicon content in the siloxane-containing copolymerization toughening agent is 98 percent. The flame retardant is bisphenol A diphosphate. The inorganic filler is talcum powder, and the specification of the talcum powder is 2000 meshes. The silicone oil is methyl silicone oil, and the viscosity of the silicone oil is 2000Pa/s. The other auxiliary agents comprise 0.5 part of anti-dripping agent, 0.2 part of antioxidant and 0.3 part of lubricant. The anti-dripping agent is SAN coated polytetrafluoroethylene, the antioxidant is 168 antioxidant, and the lubricant is PETS.
The preparation method of one of the polycarbonate materials described above in this comparative example was the same as the preparation method in example 1.
This comparative example differs from example 2 above in that the isophthalate-carbonate copolymer and the branched bisphenol A polycarbonate in the components were all replaced with a polydimethylsiloxane-bisphenol A polycarbonate copolymer.
Comparative example 3
A polycarbonate material comprises the following components in parts by weight: 62 parts of branched bisphenol A polycarbonate, 10 parts of siloxane-containing copolymerization toughening agent, 15 parts of flame retardant, 23 parts of inorganic filler, 1 part of silicone oil and 1 part of other auxiliary agents.
Wherein the branched bisphenol A polycarbonate has a weight average molecular weight of 35000g/mol. The silicon content in the siloxane-containing copolymerization toughening agent is 98 percent. The flame retardant is bisphenol A diphosphate. The inorganic filler is talcum powder, and the specification of the talcum powder is 2000 meshes. The silicone oil is methyl silicone oil, and the viscosity of the silicone oil is 2000Pa/s. The other auxiliary agents comprise 0.5 part of anti-dripping agent, 0.2 part of antioxidant and 0.3 part of lubricant. The anti-dripping agent is SAN coated polytetrafluoroethylene, the antioxidant is 168 antioxidant, and the lubricant is PETS.
The preparation method of one of the polycarbonate materials described above in this comparative example was the same as the preparation method in example 1.
This comparative example differs from comparative example 1 described above in that the content of the inorganic filler in the components was increased from 15 parts to 23 parts.
Comparative example 4
A polycarbonate material comprises the following components in parts by weight: 20 parts of poly (m-phthalic acid ester) -carbonate copolymer, 25 parts of polydimethylsiloxane-bisphenol A polycarbonate copolymer, 9 parts of siloxane-containing copolymerization toughening agent, 9 parts of flame retardant, 25 parts of inorganic filler, 0 part of silicone oil and 1 part of other auxiliary agents.
Wherein the weight average molecular weight of the isophthalate-carbonate copolymer is 28000g/mol. The polydimethylsiloxane-bisphenol A polycarbonate copolymer had a weight average molecular weight of 23500g/mol. The silicon content in the siloxane-containing copolymerization toughening agent is 98 percent. The flame retardant is tetraphenyl resorcinol diphosphate. The inorganic filler is glass fiber powder, and the length of the glass fiber powder is 100 mu m. The other auxiliary agents comprise 0.5 part of anti-dripping agent, 0.2 part of antioxidant and 0.3 part of lubricant. The anti-dripping agent is SAN coated polytetrafluoroethylene, the antioxidant is 168 antioxidant, and the lubricant is PETS.
The preparation method of one of the polycarbonate materials described above in this comparative example was the same as that of example 1.
This comparative example is different from example 1 described above in that the content of the isophthalate-carbonate copolymer in the composition was reduced to 20 parts while the content of the polydimethylsiloxane-bisphenol A polycarbonate copolymer in the composition was increased to 25 parts.
Performance test
The polycarbonate materials obtained in examples 1 to 4 and comparative examples 1 to 4 described above were subjected to a notched impact strength test, a smoke density test and a heat release test, respectively. Relevant performance test standards and test sample sizes were as follows:
(1) Testing the notch impact strength, testing the standard ISO 179, drying the granules and then injection molding to obtain a standard test sample strip;
(2) Smoke density test Ds (4), reference standard ISO 5659-2, irradiation energy 50kW, test specimen size 75mm x 3mm;
(3) Smoke density test VOF (4), reference standard ISO 5659-2, irradiation energy 50kW, test sample size 75mm x 3mm;
(4) Heat release test, reference standard ISO 5660-2, irradiation energy 50kW, test specimen size 100mm × 100mm × 3mm.
Results of performance test of examples and comparative examples
As can be seen from the data of the results of the performance tests of examples 1 to 4 in the above table, the polycarbonate materials prepared according to the examples of the present invention all had smoke densities (Ds (4)) of less than 300 after 4 minutes, smoke density integrals (VOF (4)) as a function of time of4 minutes of less than 600, and maximum average heat release rates (MAHRE) of less than 90kW/m 2 . When in application, the flame retardant fully meets the flame retardant requirement of R1 HL2 in the European Standard flame retardant EN 45545-2.
As can be seen by comparing the test data of example 2, comparative example 1 and comparative example 2 in the table, the addition of the poly (isophthalate-carbonate) copolymer to the polycarbonate material can effectively reduce the smoke density and the heat release rate of the material. As can be seen from the test data of comparative examples 1 and 3, increasing the content of the inorganic filler in the composition can reduce the smoke density and the heat release rate to some extent, because the smoke density and the heat release rate are reduced by increasing the content of the inorganic component and reducing the relative content of the corresponding resin component, and more energy needs to be absorbed to burn. As can be seen from the test data of comparative example 4, reducing the content of the isophthalate-carbonate copolymer in the components significantly affects the smoke density and the heat release rate of the polycarbonate material, and therefore, it is desirable to obtain a lower smoke density and a lower heat release rate, because the relative content of the isophthalate-carbonate copolymer in the components is increased as much as possible, but in the actual application process, the raw material cost of the polycarbonate material is increased by adopting the isophthalate-carbonate copolymer entirely, so that in combination with the content of the components of the isophthalate-carbonate copolymer in examples 1 to 4, the content of the isophthalate-carbonate copolymer in the polycarbonate resin in the actual application process is 60% or more.
Finally, it should be noted that: these embodiments are merely illustrative of the present invention and do not limit the scope of the present invention. In addition, other variations and modifications will be apparent to persons skilled in the art based on the foregoing description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (10)
1. A low-smoke low-heat-release polycarbonate material for rail transit interiors is characterized in that: comprises the following components in parts by weight: 45-75 parts of polycarbonate resin, 5-10 parts of toughening agent, 8-15 parts of flame retardant, 15-25 parts of inorganic filler, 0-3 parts of silicone oil and 0-5 parts of other auxiliary agents;
the polycarbonate resin comprises a poly (isophthalate-carbonate) copolymer and an auxiliary resin;
wherein the weight average molecular weight of the poly (isophthalate-carbonate) copolymer is 28000g/mol, and the structure is as follows:
the auxiliary resin is any one or a mixture of two of branched bisphenol A polycarbonate or polydimethylsiloxane-bisphenol A polycarbonate copolymer according to any proportion.
2. The low-smoke low-heat-release polycarbonate material for the interior decoration of rail transit as claimed in claim 1, wherein: the polycarbonate resin has a content of the isophthalate-carbonate copolymer of 60% or more.
3. The low-smoke low-heat-release polycarbonate material for the interior decoration of rail transit as claimed in claim 1, wherein: the weight average molecular weight of the branched bisphenol A polycarbonate is 35000g/mol, and the monomer structure is as follows:
wherein R is 1 -R 4 Independently of one another and each represents C 1 -C 10 Alkyl radical, R 5 -R 7 Independently of one another and independently of one another represent hydrogen or C 1 -C 10 An alkyl group.
4. The low-smoke low-heat-release polycarbonate material for the interior decoration of rail transit as claimed in claim 1, wherein: the polydimethylsiloxane-bisphenol A polycarbonate copolymer has a weight average molecular weight of 23500g/mol and a structure as follows:
5. the low-smoke low-heat-release polycarbonate material for the interior decoration of rail transit as claimed in claim 1, wherein: the toughening agent is a mixture consisting of one or more of MBS toughening agent, EMA toughening agent, EBA toughening agent or siloxane-containing copolymerization toughening agent according to any proportion.
6. The low-smoke low-heat-release polycarbonate material for the interior of rail transit as claimed in claim 1, wherein: the silicon content of the siloxane-containing copolymerized flexibilizer is more than 90%.
7. The low-smoke low-heat-release polycarbonate material for the interior decoration of rail transit as claimed in claim 1, wherein: the flame retardant is any one of bisphenol A diphosphate (BPADP), tetraphenylresorcinol diphosphate (RDP), ammonium polyphosphate, triphenyl phosphate, hexaamino cyclotriphosphazene or hexa phenylamino cyclotriphosphazene.
8. The low-smoke low-heat-release polycarbonate material for the interior decoration of rail transit as claimed in claim 1, wherein: the inorganic filler is any one of chopped glass fiber, glass fiber powder, wollastonite or talcum powder.
9. The low-smoke low-heat-release polycarbonate material for the interior decoration of rail transit as claimed in claim 1, wherein: the silicone oil is a mixture composed of any one or more than two of methyl silicone oil, ethyl silicone oil, phenyl silicone oil, methyl hydrogen-containing silicone oil, methyl phenyl silicone oil, methyl chlorphenyl silicone oil, methyl ethoxy silicone oil, methyl trifluoro propyl silicone oil, methyl vinyl silicone oil, methyl hydroxyl silicone oil, ethyl hydrogen-containing silicone oil, hydroxyl hydrogen-containing silicone oil or cyanogen-containing silicone oil according to any proportion.
10. The low-smoke low-heat-release polycarbonate material for the interior decoration of rail transit as claimed in claim 1, wherein: the other auxiliary agent is any one or a mixture of more than two of an antioxidant, a lubricant, a light stabilizer, an anti-dripping agent or a coloring agent according to any proportion.
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| CN115819950A (en) * | 2022-12-20 | 2023-03-21 | 上海品诚控股集团有限公司 | High-performance, low-smoke-density and low-heat-release-rate polycarbonate composition and preparation method thereof |
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