WO2013149386A1 - 环氧树脂组合物及使用其制作的半固化片与覆铜箔层压板 - Google Patents

环氧树脂组合物及使用其制作的半固化片与覆铜箔层压板 Download PDF

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WO2013149386A1
WO2013149386A1 PCT/CN2012/073546 CN2012073546W WO2013149386A1 WO 2013149386 A1 WO2013149386 A1 WO 2013149386A1 CN 2012073546 W CN2012073546 W CN 2012073546W WO 2013149386 A1 WO2013149386 A1 WO 2013149386A1
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Prior art keywords
epoxy resin
resin composition
brominated
flame retardant
bromine
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PCT/CN2012/073546
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English (en)
French (fr)
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曾宪平
唐军旗
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广东生益科技股份有限公司
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Priority to PCT/CN2012/073546 priority Critical patent/WO2013149386A1/zh
Publication of WO2013149386A1 publication Critical patent/WO2013149386A1/zh

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00Use of pretreated ingredients
    • C08K9/04Ingredients treated with organic substances
    • C08K9/06Ingredients treated with organic substances with silicon-containing compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/04Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/20Layered products comprising a layer of metal comprising aluminium or copper
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/04Condensation polymers of aldehydes or ketones with phenols only
    • C08L61/06Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/03Use of materials for the substrate
    • H05K1/0313Organic insulating material
    • H05K1/0353Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
    • H05K1/0373Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement containing additives, e.g. fillers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04Impregnation, embedding, or binder material
    • B32B2260/046Synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/30Properties of the layers or laminate having particular thermal properties
    • B32B2307/306Resistant to heat
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/704Crystalline
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00Electrical equipment
    • B32B2457/08PCBs, i.e. printed circuit boards
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/03Use of materials for the substrate
    • H05K1/0313Organic insulating material
    • H05K1/032Organic insulating material consisting of one material
    • H05K1/0326Organic insulating material consisting of one material containing O
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/03Use of materials for the substrate
    • H05K1/0313Organic insulating material
    • H05K1/0353Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
    • H05K1/0366Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement reinforced, e.g. by fibres, fabrics
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/02Fillers; Particles; Fibers; Reinforcement materials
    • H05K2201/0203Fillers and particles
    • H05K2201/0206Materials
    • H05K2201/0209Inorganic, non-metallic particles

Definitions

  • the present invention relates to an epoxy resin composition, and more particularly to an epoxy resin composition and a prepreg and a copper clad laminate produced using the same. Background technique
  • the epoxy used is also replaced by a conventional brominated bisphenol A type epoxy resin to a more excellent heat resistant phenolic epoxy resin, such as a phenol novolac type epoxy resin, an o-cresol novolac epoxy resin, a bisphenol A type.
  • a phenol novolac type epoxy resin such as a phenol novolac type epoxy resin, an o-cresol novolac epoxy resin, a bisphenol A type.
  • the phenolic epoxy resin, the dicyclopentadiene type phenolic epoxy resin, etc. can effectively improve the heat resistance of the cured product, but the use of the general novolac epoxy resin and the phenolic resin brings about a large brittleness of the cured product and drilling processability. Declining, leading to the phenomenon of layered blasting in the lead-free process.
  • the addition of filler can effectively reduce the thermal expansion coefficient of the cured product, but due to the addition of the filler, the fluidity is deteriorated, and the hole-filling property of the printed circuit board is deteriorated, and appears under the application of the lead-free process condition. Defects such as reduced reliability and cracking of glass yarn.
  • An object of the present invention is to provide an epoxy resin composition which has good fluidity, has high glass transition temperature after curing, high heat resistance, low expansion coefficient, and low moisture absorption.
  • Another object of the present invention is to provide a prepreg and a copper clad laminate which are prepared by using the above epoxy resin composition, and have high glass transition temperature, high heat resistance, low expansion coefficient, low hygroscopicity, and can satisfy high multi-layer printing. High reliability requirements for circuit boards.
  • an epoxy resin composition comprising the following essential components:
  • n is an integer from 0 to 10.
  • the epoxy resin of the component (A) is a polyfunctional epoxy resin having a functionality of not less than 2 and an epoxy equivalent of not more than 300 g/eq.
  • the epoxy resin comprises: o-cresol novolac epoxy resin, bisphenol A novolac epoxy resin, dicyclopentadiene novolac epoxy resin, biphenyl type epoxy resin, naphthol type epoxy resin, alkylation a benzene type epoxy resin, a trifunctional epoxy resin, and a tetrafunctional epoxy resin, the component (A) is at least one of the above epoxy resins, and the structural formula of the trifunctional epoxy resin is as shown in the second formula:
  • the epoxy resin composition further comprises a flame retardant, the flame retardant is a bromine flame retardant or a halogen-free flame retardant; the bromine flame retardant is a non-reactive or reactive bromine flame retardant, and the reaction type
  • the bromine-based flame retardant is a brominated epoxy resin selected from one or more of a brominated bisphenol A type epoxy resin, a brominated phenolic type epoxy resin, and a brominated isocyanate modified epoxy resin, and is non-reactive.
  • the bromine-based flame retardant is one or more selected from the group consisting of decabromodiphenyl ether, decabromodiphenylethane, brominated styrene, ethylene bistetrabromophthalimide, and brominated polycarbonate.
  • the brominated epoxy resin has a bromine content of 15 to 55%; and the addition of the brominated epoxy resin is calculated based on 100 parts by weight of the total weight of the component (A) and the component (B) in the epoxy resin composition. The amount is 10 to 50 parts by weight.
  • the epoxy resin composition further comprises an inorganic or organic filler having a particle diameter of 0.1 to 10 ⁇ m;
  • the inorganic filler is a random or spherical inorganic filler selected from the group consisting of crystalline silica, fused silica, and spherical Silicon oxide, hollow silica, glass powder, aluminum nitride, boron nitride, carbonization One or more of silicon, aluminum hydroxide, titanium dioxide, barium titanate, barium titanate, aluminum oxide, barium sulfate, talc, silicate 4 bow, carbonic acid 4 bow, and mica;
  • the organic filler is selected from the group consisting of One or more of polytetrafluoroethylene powder, polyphenylene sulfide, polyethersulfone powder.
  • the inorganic filler is a spherical inorganic filler surface-treated with a surface treatment agent, and the surface treatment agent is a silane coupling agent, which is an epoxy silane coupling agent, an aminosilane coupling agent, or a thiosilane coupling agent.
  • a silane coupling agent which is an epoxy silane coupling agent, an aminosilane coupling agent, or a thiosilane coupling agent.
  • the epoxy resin composition further contains a curing accelerator which is one or more of imidazole and a derivative thereof, a piperidine compound, and triphenylphosphine.
  • a curing accelerator which is one or more of imidazole and a derivative thereof, a piperidine compound, and triphenylphosphine.
  • the present invention also provides a prepreg prepared using the above epoxy resin composition, which comprises a reinforcing material and an epoxy resin composition adhered to the reinforcing material by impregnation and drying.
  • the present invention also provides a copper-clad laminate produced using the above epoxy resin composition, comprising: a plurality of laminated prepregs and a copper foil laminated on one side or both sides of the laminated prepreg
  • a copper-clad laminate produced using the above epoxy resin composition, comprising: a plurality of laminated prepregs and a copper foil laminated on one side or both sides of the laminated prepreg
  • Each of the cured sheets includes a reinforcing material and an epoxy resin composition adhered to the reinforcing material by impregnation and drying.
  • the epoxy resin composition of the present invention has an epoxy resin having a melt viscosity of not more than 0.5 Pa.s at 150 ° C, which has a low melt viscosity, so that the resin composition has good properties.
  • Mobility 2
  • the epoxy resin composition of the present invention has a phenolic resin as shown in the structural formula 1 as a curing agent, and has a high glass transition temperature after the resin composition is cured, and the curing agent is solidified to form a three-dimensional shape.
  • the cross-linking network can meet the high reliability requirements of high-multilayer printed circuit boards. detailed description
  • the epoxy resin composition of the present invention comprises the following essential components:
  • the epoxy resin in the component (A) is a polyfunctional epoxy resin having a functionality of not less than 2 and an epoxy equivalent of not more than 300 g/eq.
  • the optional epoxy resin of component (A) is: o-cresol novolac epoxy resin, bisphenol A novolac epoxy resin, dicyclopentadiene novolac epoxy resin, biphenyl type epoxy resin, naphthol type ring An oxy resin, an alkylated benzene type epoxy resin, a trifunctional epoxy resin, and a tetrafunctional epoxy resin, and the component (A) may be at least one of the above epoxy resins.
  • n is an integer from 1 to 10;
  • n is an integer from 1 to 8.
  • the component (B) phenolic resin in the epoxy resin composition of the invention has a phenolic functionality of 3 or more, which serves as a curing agent in the epoxy resin composition, cures and crosslinks the epoxy resin, and cures cross-linking. Thereafter, the cured product has a high glass transition temperature and a low expansion coefficient.
  • the component (B) phenol resin is used in an amount of from 0.9 to 1.2, preferably from 0.95 to 1.1, more preferably from 0.98 to 1.05, based on the epoxy equivalent of the epoxy resin to the hydroxyl equivalent ratio of from 0.9 to 1.2.
  • the epoxy resin composition of the present invention may further contain other types of epoxy resins, such as a flame retardant, a flame retardant may be added in order to satisfy the flame retardancy of the cured product. It may be a bromine-based flame retardant or a halogen-free flame retardant; the bromine-based flame retardant is a non-reactive or reactive bromine-based flame retardant.
  • the reactive bromine-based flame retardant may be a brominated epoxy resin selected from one or more of a brominated bisphenol A type epoxy resin, a brominated phenolic type epoxy resin, and a brominated isocyanate modified epoxy resin.
  • the brominated epoxy resin has a bromine content of 15 to 55%.
  • the non-reactive brominated flame retardant may be selected from decabromodiphenyl ether, decabromodiphenylethane, brominated styrene, ethylene bistetrabromophthalimide.
  • decabromodiphenyl ether decabromodiphenylethane
  • brominated styrene ethylene bistetrabromophthalimide.
  • One or more of an amine and a brominated polycarbonate may be selected from decabromodiphenyl ether, decabromodiphenylethane, brominated styrene, ethylene bistetrabromophthalimide.
  • One or more of an amine and a brominated polycarbonate may be selected from decabromodiphenyl ether, decabromodiphenylethane, brominated styrene, ethylene bistetrabromophthalimide.
  • One or more of an amine and a brominated polycarbonate
  • the amount of the above-mentioned flame retardant to be added is not particularly limited as long as it can satisfy the UL 94 V-0 level of the cured product. If a bromine-based flame retardant is used as a flame retardant, the amount of addition is calculated according to the bromine content of different bromine-based flame retardants, and the bromine content is calculated based on the total weight of component (A) and component (B) of 100 parts by weight. It is between 10 and 20%.
  • the flame retardant is a brominated epoxy resin
  • the epoxy resin is added in an amount of 10 to 50 based on the total weight of the component (A) and the component (B) in the epoxy resin composition. Parts by weight.
  • the epoxy resin composition of the present invention may further contain a filler.
  • the filler is an inorganic or organic filler with an average particle size of 0.1 to 10 microns.
  • the inorganic filler is a random or spherical inorganic filler, and may be selected from the group consisting of crystalline silica, fused silica, spherical silica, hollow silica, glass powder, aluminum nitride, boron nitride, silicon carbide, One or more of aluminum hydroxide, titanium dioxide, barium titanate, barium titanate, aluminum oxide, barium sulfate, talc, silicate 4 bow, carbonic acid 4 bow, mica; the organic filler is selected from polytetrafluoroethylene One or more of ethylene powder, polyphenylene sulfide, polyethersulfone powder.
  • the inorganic filler is preferably a surface-treated spherical inorganic filler, which uses a surface treatment agent as a silane coupling agent, preferably an epoxy silane coupling agent, an aminosilane coupling agent, a phenylaminosilane coupling agent, a thiosilane.
  • a surface treatment agent as a silane coupling agent, preferably an epoxy silane coupling agent, an aminosilane coupling agent, a phenylaminosilane coupling agent, a thiosilane.
  • a surface treatment agent as a silane coupling agent, preferably an epoxy silane coupling agent, an aminosilane coupling agent, a phenylaminosilane coupling agent, a thiosilane.
  • the filler is added in an amount of 5 to 500 parts by weight, preferably 5 to 300 parts by weight, based on 100 parts by weight of the total of the component (A
  • the epoxy resin composition of the present invention may further contain a curing accelerator, and the curing accelerator may be one or more of imidazole and a derivative compound thereof, a piperidine compound, and triphenylphosphine.
  • the imidazole compound may be 2-methylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole or the like.
  • the amount of the curing accelerator added is not particularly limited.
  • the amount of the curing accelerator is 0.01 to 1.0 part by weight, preferably 0.04%, based on 100 parts by weight of the total of the component (A) and the component (B). 0.5 parts by weight.
  • the prepreg prepared by using the above epoxy resin composition includes a reinforcing material and an epoxy resin composition adhered thereto by impregnation and drying, and the reinforcing material is a prior art reinforcing material such as a fiberglass cloth or the like.
  • a copper-clad laminate produced using the above epoxy resin composition comprising a plurality of laminated prepregs, and a copper foil laminated on one or both sides of the laminated prepreg, the prepreg using the epoxy resin combination Production.
  • the epoxy resin composition of the present invention is made into a certain concentration of a glue, which is impregnated with a reinforcing material, then dried at a certain temperature, and the solvent is removed and semi-cured to obtain a prepreg. Then, one or more of the prepregs described above are stacked in a certain order, The copper foil is respectively pressed on both sides of the prepreg which are superposed on each other, and solidified in a hot press to obtain a copper clad laminate having a curing temperature of 150 to 250 ° C and a curing pressure of 25 to 60 Kg/cm 2 .
  • the properties such as the glass transition temperature and the heat and humidity resistance were measured, and the details and descriptions are further given in the following examples.
  • phenol type phenolic epoxy resin PN177 (Taiwan Changchun Synthetic Resin Factory) 53 parts by weight, brominated bisphenol A type epoxy resin DER530 (Dow Chemical, bromine content 18% ⁇ 20%) 20 parts by weight, 27 parts by weight of high bromine epoxy resin BEB400 (Taiwan Changchun Synthetic Resin Factory, bromine content 46% ⁇ 50%), then added with phenolic curing agent MEH-7500 (Japan Minghe Chemical, hydroxyl equivalent 96g/mol) 28 parts by weight, and solvent Butanone is stirred for a certain period of time to obtain a transparent glue solution, and then an appropriate amount of 2-methylimidazole is added, and stirring is continued to form a glue.
  • MEH-7500 Japanese Minghe Chemical, hydroxyl equivalent 96g/mol
  • the above-mentioned glue was impregnated with a glass cloth (model 7628, thickness 0.16 mm) and controlled to a suitable thickness, and then the solvent was removed by drying to obtain a prepreg.
  • a plurality of prepregs obtained by lamination were laminated on each other, and a copper foil was laminated on both sides thereof, and placed in a hot press to be cured to form the copper clad laminate.
  • the physical property data is shown in Table 1.
  • Tg(DMA)/°C 195 190 210 215 175 165 Good hole filling, poor heat resistance 260 270 260 265 260 250 Water absorption, % 0.09 0.095 0.075 0.10 0.011 0.14 Resistance to damp heat '! ⁇ 3/3 3/3 3/3 3/3 3/3 3/3 coefficient of thermal expansion,
  • N740 phenol formaldehyde type novolac epoxy resin, melt viscosity (ICI/150 ° C, Pa.s ): 0.15; N670: o-cresol novolac epoxy resin, melt viscosity (ICI/150 ° C, Pa.s ) :0.2;
  • N865 bisphenol A type phenolic epoxy resin, melt viscosity (ICI / 150 ° C, Pa.s): 0.25;
  • HP-7200H Dicyclopentadiene type novolac epoxy resin, melt viscosity (ICI/150 °C, Pa.s): 0.35;
  • HP-7200HH dicyclopentadiene type novolac epoxy resin, melt viscosity (ICI/150 °C, Pa.s): 1.0;
  • EPPN-501 trifunctional phenolic epoxy resin, melt viscosity (ICI/150
  • BEB400 brominated epoxy resin, bromine content: 45 ⁇ 49%;
  • BREN-S brominated phenolic epoxy resin, bromine content: 18 ⁇ 20%;
  • BT-93W Non-reactive brominated flame retardant, bromine content: 67.2%
  • MEH7500 trifunctional phenolic resin, hydroxyl equivalent: 96g/eq;
  • TD-2090 Novolac resin, hydroxyl equivalent: 105 g/eq.
  • Glass transition temperature (Tg) Measured according to the DMA test method specified in IPC-TM-650 2.4.24 using DMA test.
  • the phenolic resin-cured epoxy resin is used in Examples 1 to 9, and the laminate material has a high glass transition temperature and excellent heat resistance; and at the same time, a melt viscosity is low.
  • the functional group epoxy resin can provide excellent filling property to the through hole in the multi-layer plate pressing process while ensuring high glass transition temperature and heat resistance.
  • Comparative Example 3 when the phenolic curing was carried out, although a high glass transition temperature was obtained, the filling property was lowered due to high viscosity and high filler content, and Comparative Example 3 was used.
  • the existing phenolic resin is cured, and the obtained laminate material has a low glass transition temperature.
  • the copper-clad laminate of the present invention has higher glass transition temperature, through-hole filling property, and good heat and humidity resistance as compared with a general copper foil substrate, and is suitable for a high-multilayer printed wiring board field. .

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  • Medicinal Chemistry (AREA)
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Abstract

本发明涉及一种环氧树脂组合物及使用其制作的半固化片与覆铜箔层压板,该环氧树脂组合物包含以下必要组分:(A)至少一种环氧树脂,其于150℃条件下的熔融粘度不大于0.5Pa.s;(B)酚醛树脂,其结构式如式一所示。其中n为0~10的整数。本发明的环氧树脂组合物,能够提供使用其所制作的半固化片及覆铜箔层压板高玻璃化转变温度、高耐热性、低膨胀系数、及低吸湿性,可满足高多层印制线路板高可靠性要求。

Description

环氧树脂组合物及使用其制作的半固化片与覆铜箔层压板 技术领域
本发明涉及一种环氧树脂组合物, 特别涉及一种环氧树脂组合物及使 用其制作的半固化片与覆铜箔层压板。 背景技术
目前, 随着无铅化技术的全面实施, 对覆铜板的耐热性提出了更高要 求, 传统的双氰胺作为环氧树脂固化剂的覆铜板材料已无法满足无铅的耐 热性性及可靠性要求。 为了应对这一技术要求, 行业中多采用酚醛树脂替 代双氰胺作为环氧树脂固化剂, 并添加无机填料, 可以有效地提高固化物 地耐热性和降低其膨胀系数, 以提供更好的印制线路板应用时的可靠性。 使用的环氧也从传统的溴化双酚 A型环氧树脂替换为耐热性更优异的酚醛 环氧树脂, 如苯酚酚醛型环氧树脂、 邻甲酚酚醛环氧树脂、 双酚 A型酚醛 环氧树脂、 双环戊二烯型酚醛环氧树脂等可以有效地提高固化物地耐热 性, 但是由于使用一般的酚醛环氧树脂和酚醛树脂带来了固化产物脆性 大、 钻孔加工性下降, 导致无铅工艺过程中, 容易出现分层爆板的现象。
另外, 添加填料可以有效地降低固化物的热膨胀系数, 但是由于填料 的加入, 带来了流动性变差, 印制线路板加工过程的填孔性变差, 在无铅 工艺条件应用下, 出现可靠性下降、 玻璃纱开裂等缺陷。 发明内容
本发明的目的在于提供一种环氧树脂组合物, 具有良好流动性, 固化 后具有高玻璃化转变温度、 高耐热性、 低膨胀系数、 低吸湿性。
本发明的另一目的在于提供一种使用上述环氧树脂组合物制作的半固 化片与覆铜板, 具有高玻璃化转变温度、 高耐热性、 低膨胀系数、 低吸湿 性, 可满足高多层印制线路板高可靠性要求。
为实现上述目的, 本发明提供一种环氧树脂组合物, 其包含以下必要 组分:
(A) 至少一种环氧树脂, 其于 150 °C条件下的熔融粘度不大于
0.5Pa.s;
(B) 酚醛树脂, 其结构式如式一所示:
式一
Figure imgf000004_0001
其中 n为 0~10的整数。
所述组分 (A)的环氧树脂为官能度不小于 2的多官能环氧树脂, 其环氧 当量不大于 300g/eq。
所述环氧树脂包括: 邻甲酚酚醛环氧树脂、 双酚 A型酚醛环氧树脂、 双环戊二烯酚醛环氧树脂、 联苯型环氧树脂、 萘酚型环氧树脂、 烷基化苯 型环氧树脂、 三官能基环氧树脂及四官能环氧树脂, 组分 (A)为上述环氧树 脂中至少一种, 三官能基环氧树脂结构式如式二所示:
式二
Figure imgf000004_0002
, n为 1~10的整数。 该环氧树脂组合物还包含有阻燃剂, 阻燃剂为溴系阻燃剂或无卤素阻 燃剂; 所述溴系阻燃为非反应型或反应型溴系阻燃剂, 反应型溴系阻燃剂 为溴化环氧树脂, 选自溴化双酚 A型环氧树脂、 溴化酚醛型环氧树脂及溴 化异氰酸酯改性环氧树脂中的一种或多种, 非反应型溴系阻燃剂选自十溴 二苯醚、 十溴二苯乙烷、 溴化苯乙烯、 乙撑双四溴邻苯二甲酰亚胺及溴化 聚碳酸酯中的一种或多种。
所述溴化环氧树脂的溴含量为 15~55%; 以环氧树脂组合物中组分 (A) 与组分 (B)总重 100重量份计算, 所述溴化环氧树脂的添加量为 10~50重量 份。
该环氧树脂组合物还包含无机或有机填料, 其粒径为 0.1~10微米; 所 述无机填料为无规则或球形的无机填料, 选自结晶型二氧化硅、 熔融二氧 化硅、 球形二氧化硅、 空心二氧化硅、 玻璃粉、 氮化铝、 氮化硼、 碳化 硅、 氢氧化铝、 二氧化钛、 钛酸锶、 钛酸钡、 氧化铝、 硫酸钡、 滑石粉、 硅酸 4弓、 碳酸 4弓、 及云母中的一种或多种; 所述有机填料选自聚四氟乙烯 粉末、 聚苯硫醚、 聚醚砜粉末中的一种或多种。
所述无机填料为采用表面处理剂经过表面处理的球形无机填料, 表面 处理剂采用硅烷偶联剂, 其为环氧基硅烷偶联剂、 氨基硅烷偶联剂、 硫基 硅烷偶联剂中的一种或多种。
该环氧树脂组合物进一步还包含有固化促进剂, 该固化促进剂为咪唑 及其衍生化合物、 哌啶化合物及三苯基膦中一种或多种。
本发明还提供一种使用上述环氧树脂组合物制作的半固化片, 其包括 增强材料及通过含浸干燥后附着在增强材料上的环氧树脂组合物。
进一步地, 本发明还提供一种使用上述环氧树脂组合物制作的覆铜箔 层压板, 其包括: 数张叠合的半固化片及压覆在叠合的半固化片一侧或两 侧上的铜箔, 每一半固化片包括增强材料及通过含浸干燥后附着在增强材 料上的环氧树脂组合物。
本发明的有益效果: ①本发明的环氧树脂组合物采用 150°C条件下的 熔融粘度不大于 0.5Pa.s的环氧树脂, 其具有较低的熔融粘度, 使树脂组合 物具有良好的流动性; ②本发明的环氧树脂组合物以如结构式一所示的酚 醛树脂作为固化剂, 使树脂组合物固化完后具有高的玻璃化转变温度, 并 且该固化剂在固化完, 形成三维的交联网络, 可满足高多层印制线路板高 可靠性要求。 具体实施方式
本发明的环氧树脂组合物, 包括以下必要组分:
(A) 至少一种环氧树脂, 其在 150 °C条件下的熔融粘度不大于 0.5Pa.s;
(B) 酚醛树脂, 其结构如式一所示:
式一
Figure imgf000005_0001
所述组分 (A)中的环氧树脂为官能度不小于 2的多官能环氧树脂, 其环 氧当量不大于 300g/eq。 组分 (A)可选的环氧树脂有: 邻甲酚酚醛环氧树 脂、 双酚 A 型酚醛环氧树脂、 双环戊二烯酚醛环氧树脂、 联苯型环氧树 脂、 萘酚型环氧树脂、 烷基化苯型环氧树脂、 三官能基环氧树脂及四官能 环氧树脂, 组分 (A)可为上述环氧树脂中至少一种。
, 三官能基环氧树脂结构式如下式二所示:
Figure imgf000006_0001
, n为 1~10的整数;
双环戊二烯酚醛环氧树脂结构式如下式三所示:
式三
/〇 /〇\
H2
Figure imgf000006_0002
, n为 1~8的整数。
本发明环氧树脂组合物中组分 (B)酚醛树脂, 其酚基官能度为 3 或以 上, 其作为环氧树脂组合物中的固化剂, 对环氧树脂进行固化交联, 固化 交联后, 固化物具有高的玻璃化转变温度, 低的膨胀系数。 该组分 (B)酚醛 树脂的用量为按照所述环氧树脂的环氧当量与羟基当量比在 0.9~1.2 之间 计算, 优选为 0.95-1.1 , 更优选为 0.98~1.05。
除了所述组分 (A)的环氧树脂外, 本发明环氧树脂组合物还可以含有其 他类型的环氧树脂, 如为了满足固化产物具有阻燃性, 可添加阻燃剂, 阻 燃剂可以为溴系阻燃剂或无卤素阻燃剂; 所述溴系阻燃为非反应型或反应 型溴系阻燃剂。 反应型溴系阻燃剂可为溴化环氧树脂, 选自溴化双酚 A型 环氧树脂、 溴化酚醛型环氧树脂, 溴化异氰酸酯改性环氧树脂中的一种或 多种, 所述的溴化环氧树脂的溴含量为 15~55%。 非反应型溴化阻燃剂可 选自十溴二苯醚、 十溴二苯乙烷、 溴化苯乙烯、 乙撑双四溴邻苯二甲酰亚 胺及溴化聚碳酸酯中的一种或多种。
上述阻燃剂的添加量没有特别限定, 只要能满足固化产物阻燃级别达 到 UL 94 V-0级别。 如采用溴系阻燃剂为阻燃剂, 其添加量 ^据不同的溴 系阻燃剂的溴含量计算, 以组分 (A)与组分 (B)总重 100 重量份计算, 溴含 量为 10~20%之间。 溴含量低于 10%时无法满足阻燃级别达到 V-0级别; 而溴含量大于 20%时, 虽然可以充分保证固化产物阻燃级别达到 V-0 级 另1 J , 但是由于溴含量增加, 固化物的耐热性急剧下降。 所述阻燃剂为溴化 环氧树脂时, 以环氧树脂组合物中组分 (A)与组分 (B)总重 100 重量份计 算, 溴化环氧树脂的添加量为 10~50重量份。
为了进一步降低固化产物的热膨胀系数, 本发明的环氧树脂组合物中 还可以包含有填料。 填料为无机或有机填料, 平均粒径为 0.1~10微米。 所 述无机填料为无规则或球形无机填料, 可选自结晶型二氧化硅、 熔融二氧 化硅、 球形二氧化硅、 空心二氧化硅、 玻璃粉、 氮化铝、 氮化硼、 碳化 硅、 氢氧化铝、 二氧化钛、 钛酸锶、 钛酸钡、 氧化铝、 硫酸钡、 滑石粉、 硅酸 4弓、 碳酸 4弓、 云母中的一种或多种; 所述有机填料选自聚四氟乙烯粉 末、 聚苯硫醚、 聚醚砜粉末中的一种或多种。 所述无机填料优选为经过表 面处理的球形无机填料, 其采用表面处理剂为硅烷偶联剂, 优选环氧基硅 烷偶联剂、 氨基硅烷偶联剂、 苯氨基硅烷偶联剂、 硫基硅烷偶联剂中的一 种或其混合物。 所述填料的添加量相对于组分 (A)、 组分 (B)合计 100 重量 份为 5~500重量份, 优选为 5~300重量份。
另外, 本发明环氧树脂组合物中还可以含有固化促进剂, 所述的固化 促进剂可以为咪唑及其衍生化合物、 哌啶化合物及三苯基膦中的一种或多 种。 所述咪唑化合物可为 2-甲基咪唑、 2-乙基 -4-甲基咪唑、 2-苯基咪唑 等。 本发明对固化促进剂的添加量没有特别的限定, 根据工艺的需求, 其 添加量相对于组分 (A)、 组分 (B)合计 100重量份为 0.01~1.0重量份, 优选 为 0.04~0.5重量份。
使用上述环氧树脂组合物制作的半固化片, 包括增强材料及通过含浸 干燥后附着其上的环氧树脂组合物, 增强材料使用现有技术的增强材料, 如玻纤布等。 使用上述环氧树脂组合物制作的覆铜箔层压板, 包括数张叠 合的半固化片、 及压覆在叠合的半固化片一侧或两侧的铜箔, 所述半固化 片采用所述环氧树脂组合物制作。
制作时, 将本发明的环氧树脂组合物制成一定浓度的胶液, 通过浸渍 增强材料, 然后在一定的温度下烘干, 赶走溶剂及进行半固化, 得到半固 化片。 然后将上述所述的半固化片一张或多张按照一定顺序叠合在一起, 将铜箔分别压覆在相互叠合的半固化片两侧, 在热压机中固化制得覆铜箔 层压板, 其固化温度为 150-250°C , 固化压力为 25-60 Kg/cm2
针对上述制成的覆铜、箔层压板, 测其玻璃化转变温度及耐湿热等性 能, 如下述实施例进一步给予详加说明与描述。
实施例 1:
取一容器, 加入苯酚型酚醛环氧树脂 PN177(台湾长春人造树脂厂) 53 重量份, 溴化双酚 A型环氧树脂 DER530(陶氏化学, 溴含量 18%~20%)20 重量份, 高溴环氧树脂 BEB400(台湾长春人造树脂厂, 溴含量 46%~50%)27重量份,然后加入酚醛固化剂 MEH-7500(日本明和化学, 羟基 当量 96g/mol)28重量份, 以及溶剂丁酮进行搅拌一定时间, 制得透明的胶 液, 然后再加入适量 2-甲基咪唑, 继续搅拌均勾即成胶液。 用玻璃纤维布 (型号为 7628, 厚度为 0.16mm)浸渍上述胶液, 并控制至合适厚度, 然后 烘干除去溶剂制得半固化片。 使用数张所制得的半固化片相互叠合, 在其 两侧上各压覆一张铜箔, 放进热压机中固化制成所述覆铜箔层压板。 物性 数据如表 1所示。
实施例 2~9:
制作工艺和实施例 1相同, 配方组成及其物性数据如表 1、 2所示。 比较例 1~3:
制作工艺和实施例 1相同, 配方组成及其物性数据如表 2所示。
表 1.实施例 1~6的配方组成及其物性数据
组分名称 实施例 1 实施例 2 实施例 3 实施例 4 实施例 5 实施例 6
N740 53 ― ― ― ― ―
N670 ― 28 ― ― ― ―
N865 ― ― 34 ― ― ―
HP-7200H ― ― ― 35 ― 50
EPPN-501 ― 22 36 35 50 ―
BEB400 20 20 30 30 ― ―
DER530 27 ― ― ― ― ―
BREN-S ― ― ― ― 50 50
MEH7500
(相对于环氧 leq 0.97eq 1.05eq l.leq 0.94eq leq 树脂当量比)
2E4MZ 0.075 0.075 0.075 0.075 0.075 0.075 丁酮 适量 适量 适量 适量 适量 适量
Tg(DMA)/°C 180 190 210 215 230 195 填孔性 好 好 好 好 好 好 耐热性 250 260 260 265 280 265 吸水率, % 0.12 0.13 0.13 0.13 0.16 0.14 耐湿热 '!·生 3/3 3/3 3/3 3/3 3/3 3/3 表 2.实施例 7~9及比较例 1~3的配方组成及其物性数据 实施例 比较例 2 比较例 3 组分名称 实施例 8 实施例 9 比较例 1
7
HP-7200HH ― ― ― 60 ― 55
EPPN-501 50 55 50 ― 50 ―
BEB400 ― ― ― ― 50 45
BREN-S 50 ― 30 40 ― ―
DER593 ― ― 20 ― ―
SO-C2 40 35 60 40 100 40
BT-93W ― 25 ― ―
MEH7500
(相对于环氧 1.0 1.0 1.0 1.0
树脂当量比)
TD-2090
(相对于环氧 ― ― ― ― 1.0 1.0 树脂当量比)
2E4MZ 0.075 0.075 0.075 0.075 0.075 0.075 丁酮 适量 适量 适量 适量 适量 适量
Tg(DMA)/°C 195 190 210 215 175 165 填孔性 好 好 好 差 较差 好 耐热性 260 270 260 265 260 250 吸水率, % 0.09 0.095 0.075 0.10 0.011 0.14 耐湿热 '!·生 3/3 3/3 3/3 3/3 3/3 3/3 热膨胀系数,
45 48 40 45 35 45 Tg前 表 1、 2中列举的材料具体如下:
N740: 苯酚甲醛型酚醛环氧树脂, 熔融粘度(ICI/150°C ,Pa.s ) :0.15; N670: 邻甲酚型酚醛环氧树脂, 熔融粘度(ICI/150°C,Pa.s ) :0.2;
N865: 双酚 A型酚醛环氧树脂, 熔融粘度(ICI/150°C,Pa.s ) :0.25;
HP-7200H: 双环戊二烯型酚醛环氧树脂, 熔融粘度 ( ICI/150 °C ,Pa.s ) :0.35;
HP-7200HH: 双环戊二烯型酚醛环氧树脂, 熔融粘度 ( ICI/150 °C ,Pa.s ) :1.0;
EPPN-501: 三官能团酚醛环氧树脂 , 熔融粘度 ( ICI/150
°C ,Pa.s ) :0.08;
BEB400: 溴化环氧树脂, 溴含量: 45~49%;
DER530: 溴化环氧树脂, 溴含量: 18~20%;
BREN-S: 溴化酚醛环氧树脂, 溴含量: 18~20%;
BT-93W: 非反应型溴化阻燃剂, 溴含量: 67.2%
MEH7500: 三官能团酚醛树脂, 羟基当量: 96g/eq;
TD-2090: 线型酚醛树脂, 羟基当量: 105g/eq。
以上特性的测试方法如下:
( 1 )玻璃化转变温度(Tg ) : 使用 DMA 测试, 按照 IPC-TM-650 2.4.24所规定的 DMA测试方法进行测定。
( 2 ) 填孔性: 取 1.6mm 覆铜箔层压板, 然后再一定的条件下 10*10mm的面积内分别钻 50个、 100个、 150个孔径为 0.35mm的孔, 然 后两面在分别叠 2 张 2116 粘结片, 在压机中按同一条件压制, 得到样 品; 然后用切片观察法, 分析孔的填充效果, 全部填充满为 "好" , 如有 小部分未填充满的则为 "较差" 。 如有大部分未填充满的则为 "差" 。
( 3 ) 耐湿热性评价: 将覆铜板表面的铜箔蚀刻后, 评价基板; 将基 板放置压力锅中, 在 120°C、 105KPa条件下处理 4h; 后浸渍在 288°C的锡 炉中, 当基板分层爆板时记录相应时间; 当基板在锡炉中超过 5min还没 出现气泡或分层时即可结束评价。
( 4 )耐热性评价: 去 100*100mm大小的双面覆铜板, 在不同温度下 烘烤 2小时, 观察样品是否有分层鼓泡。
( 5 )热膨胀系数: 使用 TMA测试, 按照 IPC-TM-650 2.4.24.1 所规 定的 TMA测试方法进行测定。
( 6 )吸水率: 按照 IPC-TM-650 2.6.2.1所规定的测试方法进行测定。 物性分析:
从表 1、 表 2的物性数据可知实施例 1~9中使用所述酚醛树脂固化环 氧树脂, 得到层压板材料的玻璃化转变温度较高、 耐热性优异; 同时采用 熔融粘度低的多官能团环氧树脂, 在保证高玻璃化转变温度及耐热性同 时, 可以提供在多层板压制过程对通孔的优良填充性。 比较例 1~2 中同样 结构的环氧树脂在用酚醛固化的时候, 虽然可以得到较高的玻璃化转变温 度, 但是由于粘度高、 填料含量高, 降低了通孔填充性, 比较例 3使用现 有的酚醛树脂固化, 得到的层压板材料的玻璃化转变温度低。
如上所述, 与一般的铜箔基板相比, 本发明的覆铜箔层压板拥有更高 的玻璃化转变温度、 通孔填充性, 同时耐湿热性能好, 适用高多层印制线 路板领域。
以上所述, 仅为本发明的较佳实施例, 对于本领域的普通技术人员来 说, 可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变 形, 而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims

权 利 要 求
1、 一种环氧树脂组合物, 其包含以下必要组分:
(A)至少一种环氧树脂, 其于 150°C条件下的熔融粘度不大于 0.5Pa.s;
(B)酚醛树脂, 其结构式如式一所示:
式一
Figure imgf000012_0001
其中 n为 0~10的整数。
2、 如权利要求 1 所述的环氧树脂组合物, 其中, 所述组分 (A)的环氧 树脂为官能度不小于 2的多官能环氧树脂, 其环氧当量不大于 300g/eq。
3、 如权利要求 2 所述的环氧树脂组合物, 其中, 所述环氧树脂包 括: 邻甲酚酚醛环氧树脂、 双酚 A型酚醛环氧树脂、 双环戊二烯酚醛环氧 树脂、 联苯型环氧树脂、 萘酚型环氧树脂、 烷基化苯型环氧树脂、 三官能 基环氧树脂及四官能环氧树脂, 组分 (A)为上述环氧树脂中至少一种, 三官 能基 树脂结构式如式二所示:
Figure imgf000012_0002
, n为 1~10的整数。
4、 如权利要求 1 所述的环氧树脂组合物, 其中, 该环氧树脂组合物 还包含有阻燃剂, 阻燃剂为溴系阻燃剂或无卤素阻燃剂; 所述溴系阻燃为 非反应型或反应型溴系阻燃剂, 反应型溴系阻燃剂为溴化环氧树脂, 选自 溴化双酚 A型环氧树脂、 溴化酚醛型环氧树脂及溴化异氰酸酯改性环氧树 脂中的一种或多种, 非反应型溴系阻燃剂选自十溴二苯醚、 十溴二苯乙 烷、 溴化苯乙烯、 乙撑双四溴邻苯二甲酰亚胺及溴化聚碳酸酯中的一种或 多种。
5、 如权利要求 4 所述的环氧树脂组合物, 其中, 所述溴化环氧树脂 的溴含量为 15~55%; 以环氧树脂组合物中组分 (A)与组分 (B)总重 100重量 份计算, 溴化环氧树脂的添加量为 10~50重量份。
6、 如权利要求项 1 所述环氧树脂组合物, 其中, 该环氧树脂组合物 还包含无机或有机填料, 其粒径为 0.1~10微米; 所述无机填料为无规则或 球形的无机填料, 选自结晶型二氧化硅、 熔融二氧化硅、 球形二氧化硅、 空心二氧化硅、 玻璃粉、 氮化铝、 氮化硼、 碳化硅、 氢氧化铝、 二氧化 钛、 钛酸锶、 钛酸钡、 氧化铝、 硫酸钡、 滑石粉、 硅酸钙、 碳酸钙、 及云 母中的一种或多种; 所述有机填料选自聚四氟乙烯粉末、 聚苯硫醚、 聚醚 石风粉末中的一种或多种。
7、 如权利要求 6 所述的环氧树脂组合物, 其中, 所述无机填料为采 用表面处理剂经过表面处理的球形无机填料, 表面处理剂采用硅烷偶联 剂, 其为环氧基硅烷偶联剂、 氨基硅烷偶联剂、 硫基硅烷偶联剂中的一种 或多种。
8、 如权利要求 1 所述的环氧树脂组合物, 其中, 该环氧树脂组合物 进一步还包含有固化促进剂, 该固化促进剂为咪唑及其衍生化合物、 哌啶 化合物及三苯基膦中一种或多种。
9、 一种使用如权利要求 1 所述的环氧树脂组合物制作的半固化片, 其包括增强材料及通过含浸干燥后附着在增强材料上的环氧树脂组合物。
10、 一种使用如权利要求 1 所述的环氧树脂组合物制作的覆铜箔层压 板, 其包括: 数张叠合的半固化片及压覆在叠合的半固化片一侧或两侧上 的铜箔, 每一半固化片包括增强材料及通过含浸干燥后附着在增强材料上 的环氧树脂组合物。
PCT/CN2012/073546 2012-04-05 2012-04-05 环氧树脂组合物及使用其制作的半固化片与覆铜箔层压板 WO2013149386A1 (zh)

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CN109135652A (zh) * 2018-08-09 2019-01-04 陕西生益科技有限公司 一种高导热增韧树脂组合物及其应用
CN112409968A (zh) * 2020-11-04 2021-02-26 江西省宏瑞兴科技股份有限公司 一种适用于高速通讯领域的高可靠性无卤粘合剂及其制备方法
CN113621230A (zh) * 2021-09-01 2021-11-09 广东华彩复合材料有限公司 高透明性预浸料用环氧树脂复合材料及其制备方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109135652A (zh) * 2018-08-09 2019-01-04 陕西生益科技有限公司 一种高导热增韧树脂组合物及其应用
CN112409968A (zh) * 2020-11-04 2021-02-26 江西省宏瑞兴科技股份有限公司 一种适用于高速通讯领域的高可靠性无卤粘合剂及其制备方法
CN113621230A (zh) * 2021-09-01 2021-11-09 广东华彩复合材料有限公司 高透明性预浸料用环氧树脂复合材料及其制备方法

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