WO2021212326A1 - 热固型树脂组成物 - Google Patents

热固型树脂组成物 Download PDF

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WO2021212326A1
WO2021212326A1 PCT/CN2020/085927 CN2020085927W WO2021212326A1 WO 2021212326 A1 WO2021212326 A1 WO 2021212326A1 CN 2020085927 W CN2020085927 W CN 2020085927W WO 2021212326 A1 WO2021212326 A1 WO 2021212326A1
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resin
epoxy resin
thermosetting
resin composition
phosphorus
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PCT/CN2020/085927
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English (en)
French (fr)
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陈怡伶
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穗晔实业股份有限公司
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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
    • C08K5/00Use of organic ingredients
    • C08K5/49Phosphorus-containing compounds
    • C08K5/51Phosphorus bound to oxygen
    • C08K5/52Phosphorus bound to oxygen only
    • C08K5/521Esters of phosphoric acids, e.g. of H3PO4
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L35/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L35/06Copolymers with vinyl aromatic monomers
    • 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
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L79/00Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
    • C08L79/04Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors

Definitions

  • the present invention relates to a resin composition, and in particular to a thermosetting resin composition.
  • epoxy resin has good heat resistance, chemical resistance, insulation and dielectric properties, it is widely used in various electronic insulation materials. Its commonly used curing agents include amines, acid anhydrides, and phenolics, especially In the application of copper foil substrate (CCL), dicyandiamide and phenolic resin are commonly used as epoxy curing agents, which have good processing performance, heat resistance, chemical resistance and insulation, but their dielectric constant and dielectric loss are relatively high. High can’t meet the requirements of high-frequency signal transmission integrity; while using styrene-maleic anhydride copolymer (SMA for short) as an epoxy resin curing agent can improve the higher dielectric constant and dielectric constant of the above-mentioned amine and phenolic curing agents.
  • SMA styrene-maleic anhydride copolymer
  • the present invention provides a thermosetting resin composition, which has good dielectric constant and low dielectric loss, and can reach a high glass transition temperature of at least 200°C.
  • thermosetting resin composition of the present invention includes epoxy resin, cyanate ester resin, phenolphthalein benzoxazine resin, styrene maleic anhydride resin, and phosphorus-containing flame retardant.
  • the equivalent ratio of phenolphthalein benzoxazine resin to styrene maleic anhydride resin is 1:1 to 1:5.
  • the thermosetting resin composition includes 15% to 40% by weight of epoxy resin, 10% to 50% by weight of cyanate resin, and 1% to 20% by weight of phenolphthalein based on the solid content ratio.
  • Type benzoxazine resin 15wt% to 50wt% of styrene maleic anhydride resin, and 5wt% to 30wt% of phosphorus-containing flame retardant.
  • the epoxy resin includes a multifunctional novolac epoxy resin.
  • the multifunctional novolac epoxy resin includes a trifunctional novolac epoxy resin, which is represented by the following chemical structural formula:
  • the epoxy resin includes a combination of a bifunctional epoxy resin and a trifunctional novolac epoxy resin, and the weight ratio of the bifunctional epoxy resin and the trifunctional novolac epoxy resin is 5:1 to 25:1.
  • the bifunctional epoxy resin includes bisphenol A epoxy resin, bisphenol F epoxy resin, or dicyclopentadiene epoxy resin.
  • the cyanate ester resin includes bisphenol A type cyanate ester resin, dicyclopentadiene type (DCPD) cyanate ester resin, bisphenol F type cyanate ester resin, and novolac cyanate ester resin. Resin or a combination thereof.
  • the molecular weight of the styrene maleic anhydride resin is 3000 to 10000, and the molar ratio of styrene to maleic anhydride is 1:1 to 8:1.
  • the phenolphthalein type benzoxazine resin is represented by the following chemical structural formula:
  • the phosphorus-containing flame retardant includes a phosphazene compound, a phosphate ester compound, a phosphorus-containing epoxy resin, a phosphorus-containing phenol resin, or a phosphorus-containing cyanate resin.
  • thermosetting resin composition further includes a filler and a curing accelerator.
  • thermosetting resin composition of the present invention the equivalent ratio of phenolphthalein benzoxazine resin to styrene maleic anhydride resin is 1:1 to 1:5, and therefore, a good dielectric constant can be achieved .
  • thermosetting resin composition of the present invention a multifunctional novolac type epoxy resin is used in combination with a phenolphthalein type benzoxazine resin, so that a higher glass transition temperature can be achieved.
  • Figure 1 is the IR spectrum of the trifunctional novolac epoxy resin.
  • Fig. 2 is a gel permeation chromatography (Gel Permeation Chromatography, GPC) diagram of a trifunctional novolac epoxy resin.
  • Figure 3 is the IR spectrum of the phenolphthalein benzoxazine resin.
  • thermosetting resin composition including epoxy resin, cyanate ester resin, phenolphthalein benzoxazine resin, styrene maleic anhydride resin and phosphorus-containing flame retardant.
  • the epoxy resin of the present invention may include a multi-functional novolac epoxy resin.
  • a multi-functional novolac epoxy resin When the multi-functional novolac epoxy resin is matched with a phenolphthalein benzoxazine resin, a higher glass transition temperature (above 200° C.) can be achieved.
  • the multifunctional novolac epoxy resin used in the present invention is preferably, for example, a trifunctional novolac epoxy resin, which is represented by the following chemical structural formula:
  • FIG. 1 is the IR spectrogram of the trifunctional novolac epoxy resin represented by the above chemical structural formula
  • Figure 2 is the gel permeation chromatography (Gel Permeation Chromatography, GPC) of the trifunctional novolac epoxy resin represented by the chemical structural formula above. )picture.
  • the epoxy resin of the present invention is preferably, for example, a combination of a bifunctional epoxy resin and a trifunctional novolac epoxy resin, and the weight ratio of the bifunctional epoxy resin and trifunctional novolac epoxy resin is, for example, 5:1 to 25:1, the bifunctional epoxy resin may include bisphenol A epoxy resin, bisphenol F epoxy resin or dicyclopentadiene epoxy resin.
  • epoxy resins may also include novolac epoxy resins, bisphenol epoxy resins, phosphorus-containing epoxy resins, o-cresol novolac epoxy resins, bisphenol A novolac epoxy resins, Phenolic novolac epoxy resin, trifunctional phenol epoxy resin, naphthalene ring epoxy resin, biphenyl epoxy resin, triazine structure epoxy resin (triazine), fluorene structure epoxy resin (fluorene) or its combination.
  • the thermosetting resin composition may include 15 wt% to 40 wt% of epoxy resin.
  • the cyanate ester resin of the present invention may include bisphenol A type cyanate ester resin, dicyclopentadiene type (DCPD) cyanate ester resin, bisphenol F type cyanate ester resin, novolac type cyanate ester resin, or a combination thereof.
  • the thermosetting resin composition may include 10% to 50% by weight of the cyanate ester resin. When the content of the cyanate ester resin is within this range (especially if the content is greater than 10 wt%), lower dielectric loss can be achieved.
  • the phenolphthalein type benzoxazine resin is preferably represented by the following chemical structural formula:
  • Fig. 3 is an IR spectrum chart of the phenolphthalein type benzoxazine resin represented by the above chemical structural formula. Based on the solid content ratio, the thermosetting resin composition may include 1 wt% to 20 wt% of the phenolphthalein type benzoxazine resin.
  • the molecular weight of the styrene maleic anhydride resin of the present invention is, for example, 3000 to 10,000, and the molar ratio of styrene to maleic anhydride is, for example, 1:1 to 8:1.
  • the equivalent ratio of the phenolphthalein type benzoxazine resin to the styrene maleic anhydride resin is, for example, 1:1 to 1:5.
  • the thermosetting resin composition can achieve a good dielectric constant.
  • the thermosetting resin composition may include 15-50% by weight of styrene maleic anhydride resin.
  • the phosphorus-containing flame retardant of the present invention may include a phosphazene compound, a phosphate ester compound, a phosphorus-containing epoxy resin, a phosphorus-containing phenol resin, or a phosphorus-containing cyanate resin. Based on the solid content ratio, the thermosetting resin composition may include 5 wt% to 30 wt% of the phosphorus-containing flame retardant.
  • thermosetting resin composition of the present invention may optionally further include a filler and a curing accelerator.
  • the curing accelerator may be selected from organic transition metal salts, triphenylphosphine compounds and imidazole compounds or a combination thereof, preferably imidazole compounds .
  • the filler may include silicon dioxide, aluminum oxide, magnesium oxide, magnesium hydroxide, calcium carbonate, talc, clay, aluminum nitride, boron nitride, aluminum hydroxide, aluminum silicon carbide, silicon carbide, carbonic acid Sodium, titanium dioxide, zinc oxide, zirconia, quartz, diamond, diamond-like, graphite, calcined kaolin, bailing clay, mica, hydrotalcite, hollow silica, polytetrafluoroethylene (PTFE) powder, glass beads , Carbon nanotubes, nano-scale inorganic powders or combinations thereof.
  • the thermosetting resin composition may include 0wt% to 50wt% filler and 0 to 20PHR curing accelerator.
  • thermosetting resin composition proposed by the present invention will be explained in detail through experimental examples. However, the following experimental examples are not intended to limit the present invention.
  • thermosetting resin composition proposed by the present invention has a good dielectric constant, a relatively high glass transition temperature (above 200° C.) and a relatively low dielectric loss
  • this experimental example is specifically made as follows.
  • the resin compositions of Examples 1 to 5 and Comparative Examples 1 to 3 were prepared.
  • the resin component and the solvent are uniformly mixed to form a resin glue
  • 2116 glass fiber cloth is used to impregnate the colloid
  • the film is baked at a temperature of 171°C for 4 minutes to make the film form a prepreg.
  • the curing conditions are: curing at a temperature of 210° C. for more than 3 hours, and a curing pressure of about 200 psi.
  • the bifunctional epoxy resin is bisphenol A type epoxy resin, bisphenol F type epoxy resin, and dicyclopentadiene epoxy resin.
  • the trifunctional novolac epoxy resin is represented by the following chemical structural formula:
  • Styrene maleic anhydride resin is SMA EF30 and SMA EF40.
  • the cyanate ester resin is a bisphenol A type cyanate ester resin and a dicyclopentadiene type (DCPD) cyanate ester resin.
  • Phosphorus-containing flame retardant is phosphazene compound SPB-100.
  • Phenolphthalein type benzoxazine resin is Chengdu Keyi CB2 series.
  • the filler is silica RCS525, G2C.
  • Examples 1 to 4 are the thermosetting resin compositions of the present invention, using trifunctional phenolic epoxy resin and phenolphthalein benzoxazine resin to match, therefore, a higher glass transition can be achieved Temperature (above 200°C).
  • the equivalent ratio of the phenolphthalein benzoxazine resin to the styrene maleic anhydride resin is 1:1 to 1:5, and therefore, a good dielectric constant can be achieved.
  • the thermosetting resin compositions of Examples 1 to 4 include 10% to 50% by weight of the cyanate ester resin, and therefore, lower dielectric loss can be achieved.
  • thermosetting resin composition of the present invention the equivalent ratio of phenolphthalein benzoxazine resin to styrene maleic anhydride resin is 1:1 to 1:5, and therefore, a good medium can be achieved. Electric constant.
  • thermosetting resin composition of the present invention a multifunctional novolac type epoxy resin is used in combination with a phenolphthalein type benzoxazine resin, so that a higher glass transition temperature (above 200°C) can be achieved.
  • the thermosetting resin composition of the present invention includes 10% to 50% by weight of the cyanate ester resin, and therefore, lower dielectric loss can be achieved.

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Abstract

本发明提供一种热固型树脂组成物,包括环氧树脂、氰酸酯树脂、酚酞型苯并恶嗪树脂、苯乙烯马来酸酐树脂以及含磷阻燃剂。酚酞型苯并恶嗪树脂与苯乙烯马来酸酐树脂的当量比为1:1至1:5。

Description

热固型树脂组成物 技术领域
本发明涉及一种树脂组成物,且特别是涉及一种热固型树脂组成物。
背景技术
为了因应近年来信息传输技术的快速发展,应用设备被要求轻薄短小化及高密度化,信息传输容量的大量化及传输处理速度的高速化也相当重要,电路基板的物性与电性则要求需达到高耐热、低吸湿、低介电损失及低介电常数等特性。
因环氧树脂具有良好的耐热性、耐化学性、绝缘性及介电性能故被广泛的应用于各种电子绝缘材料中,其常用固化剂有胺类、酸酐类、酚醛类,特别是铜箔基板(CCL)应用中,常用双氰胺和酚醛树脂作为环氧固化剂,具有较好的加工性能、耐热性、耐化学性和绝缘性,但其介电常数及介电耗损较高无法满足高频信号传输完整性的需求;而使用苯乙烯-马来酸酐共聚物(简称SMA)作为环氧树脂固化剂虽能改善上述胺类、酚醛类固化剂较高介电常数及介电耗损的问题,但使用苯乙烯-马来酸酐共聚物与环氧树脂交联后其玻璃转化温度(Tg)较低、耐热性较差及可加工性差。
基于上述,开发一种树脂组成物,具有良好的介电常数及低介电损失,且可达到至少200℃的高玻璃转化温度,为本领域技术人员亟欲发展的目标。
发明内容
本发明提供一种热固型树脂组成物,具有良好的介电常数及低介电损失,且可达到至少200℃的高玻璃转化温度。
本发明的热固型树脂组成物包括环氧树脂、氰酸酯树脂、酚酞型苯并恶嗪树脂、苯乙烯马来酸酐树脂以及含磷阻燃剂。酚酞型苯并恶嗪树脂与苯乙烯马来酸酐树脂的当量比为1:1至1:5。
在本发明的一实施例中,以固成分比例计算,热固型树脂组成物包括15wt%至40wt%的环氧树脂、10wt%至50wt%的氰酸酯树脂、1wt%至20wt% 的酚酞型苯并恶嗪树脂、15wt%至50wt%的苯乙烯马来酸酐树脂以及5wt%至30wt%的含磷阻燃剂。
在本发明的一实施例中,环氧树脂包括多官能酚醛型环氧树脂。
在本发明的一实施例中,多官能酚醛型环氧树脂包括三官能酚醛型环氧树脂,由以下化学结构式表示:
Figure PCTCN2020085927-appb-000001
在本发明的一实施例中,环氧树脂包括双官能环氧树脂及三官能酚醛型环氧树脂的组合,双官能环氧树脂及三官能酚醛型环氧树脂的重量比例为5:1至25:1。
在本发明的一实施例中,双官能环氧树脂包括双酚A型环氧树脂、双酚F型环氧树脂或双环戊二烯环氧树脂。
在本发明的一实施例中,氰酸酯树脂包括双酚A型氰酸酯树脂、双环戊二烯型(DCPD)氰酸酯树脂、双酚F型氰酸酯树脂、酚醛型氰酸酯树脂或其组合。
在本发明的一实施例中,苯乙烯马来酸酐树脂的分子量为3000至10000,且苯乙烯与马来酸酐的摩尔比为1:1至8:1。
在本发明的一实施例中,酚酞型苯并恶嗪树脂由以下化学结构式表示:
Figure PCTCN2020085927-appb-000002
在本发明的一实施例中,含磷阻燃剂包括磷腈化合物、磷酸酯化合物、含磷环氧树脂、含磷酚醛树脂或含磷氰酸酯树脂。
在本发明的一实施例中,热固型树脂组成物还包括填料及固化促进剂。
基于上述,在本发明的热固型树脂组成物中,酚酞型苯并恶嗪树脂与苯乙烯马来酸酐树脂的当量比为1:1至1:5,因此,可达到良好的介电常数。此外,在本发明的热固型树脂组成物中,使用多官能酚醛型环氧树脂与酚酞型苯并恶嗪树脂进行搭配,因此,可达到较高的玻璃转化温度。
附图说明
包含附图以便进一步理解本发明,且附图并入本说明书中并构成本说明书的一部分。附图说明本发明的实施例,并与描述一起用于解释本发明的原理。
图1为三官能酚醛型环氧树脂的IR光谱图。
图2为三官能酚醛型环氧树脂的凝胶渗透层析法(Gel Permeation Chromatography,GPC)图。
图3为酚酞型苯并恶嗪树脂的IR光谱图。
具体实施方式
以下,将详细描述本发明的实施例。然而,这些实施例为例示性,且本发明揭示不限于此。
在本文中,由“一数值至另一数值”表示的范围,是一种避免在说明书中一一列举该范围中的所有数值的概要性表示方式。因此,某一特定数值范围的记载,涵盖该数值范围内的任意数值以及由该数值范围内的任意数值界定出的较小数值范围,如同在说明书中说明文写出该任意数值和该较小数值范围一样。
本发明提出一种热固型树脂组成物,包括环氧树脂、氰酸酯树脂、酚酞型苯并恶嗪树脂、苯乙烯马来酸酐树脂以及含磷阻燃剂。以下,将对上述各种组分进行详细说明。
<环氧树脂>
本发明的环氧树脂可包括多官能酚醛型环氧树脂,当使用多官能酚醛型环氧树脂与酚酞型苯并恶嗪树脂进行搭配,可达到较高的玻璃转化温度(200℃以上)。更详细而言,本发明所使用的多官能酚醛型环氧树脂较佳例如是三官能酚醛型环氧树脂,由以下化学结构式表示:
Figure PCTCN2020085927-appb-000003
。图1为由以上化学结构式表示的三官能酚醛型环氧树脂的IR光谱图,图2为由以上化学结构式表示的三官能酚醛型环氧树脂的凝胶渗透层析法(Gel Permeation Chromatography,GPC)图。此外,本发明的环氧树脂较佳例如是双官能环氧树脂及三官能酚醛型环氧树脂的组合,双官能环氧树脂及三官能酚醛型环氧树脂的重量比例例如是5:1至25:1,双官能环氧树脂可包括双 酚A型环氧树脂、双酚F型环氧树脂或双环戊二烯环氧树脂。除了以上所提到的较佳实施例,环氧树脂也可包括酚醛环氧树脂、双酚型环氧树脂、含磷环氧树脂、邻甲酚醛环氧树脂、双酚A酚醛环氧树脂、苯酚酚醛环氧树脂、三官能酚型环氧树脂、萘环型环氧树脂、联苯型环氧树脂、含三嗪结构环氧树脂(triazine)、含茀结构环氧树脂(fluorene)或其组合。以固成分比例计算,热固型树脂组成物可包括15wt%至40wt%的环氧树脂。
<氰酸酯树脂>
本发明的氰酸酯树脂可包括双酚A型氰酸酯树脂、双环戊二烯型(DCPD)氰酸酯树脂、双酚F型氰酸酯树脂、酚醛型氰酸酯树脂或其组合。以固成分比例计算,热固型树脂组成物可包括10wt%至50wt%的氰酸酯树脂。当氰酸酯树脂的含量在此范围中时(尤其是含量大于10wt%),可达到较低的介电损失。
<酚酞型苯并恶嗪树脂>
在本发明中,酚酞型苯并恶嗪树脂较佳例如是由以下化学结构式表示:
Figure PCTCN2020085927-appb-000004
图3为由以上化学结构式表示的酚酞型苯并恶嗪树脂的IR光谱图。以固成分比例计算,热固型树脂组成物可包括1wt%至20wt%的酚酞型苯并恶嗪树脂。
<苯乙烯马来酸酐树脂>
本发明的苯乙烯马来酸酐树脂的分子量例如是3000至10000,且苯乙烯与马来酸酐的摩尔比例如是1:1至8:1。更详细而言,酚酞型苯并恶嗪树脂与苯乙烯马来酸酐树脂的当量比例如是1:1至1:5。当酚酞型苯并恶嗪树脂与苯乙烯马来酸酐树脂的当量比在此范围内时,热固型树脂组成物可达到良好的介电常数。以固成分比例计算,热固型树脂组成物可包括15wt%至50wt%的苯乙烯马来酸酐树脂。
<含磷阻燃剂>
本发明的含磷阻燃剂可包括磷腈化合物、磷酸酯化合物、含磷环氧树脂、含磷酚醛树脂或含磷氰酸酯树脂。以固成分比例计算,热固型树脂组成物可包括5wt%至30wt%的含磷阻燃剂。
<其他添加剂>
本发明的热固型树脂组成物可选择性地还包括填料及固化促进剂,固化促进剂可选自有机过渡金属盐、三苯基膦化合物和咪唑类化合物或其组合,优先选用咪唑类化合物。
在本实施例中,填料可包括二氧化硅、氧化铝、氧化镁、氢氧化镁、碳酸钙、滑石、黏土、氮化铝、氮化硼、氢氧化铝、碳化铝硅、碳化硅、碳酸钠、二氧化钛、氧化锌、氧化锆、石英、钻石、类钻石、石墨、锻烧高岭土、白岭土、云母、水滑石、中空二氧化硅、聚四氟乙烯(polytetrafluoroethylene,PTFE)粉末、玻璃珠、纳米碳管、纳米级无机粉体或其组合。以固成分比例计算,热固型树脂组成物可包括0wt%至50wt%的填料,0至20PHR的固化促进剂。
以下,通过实验例来详细说明上述本发明所提出的热固型树脂组成物。然而,下述实验例并非用以限制本发明。
实验例
为了证明本发明所提出的的热固型树脂组成物具有良好的介电常数、较高的玻璃转化温度(200℃以上)及较低的介电损失,以下特别作此实验例。
制备树脂组成物及性质评估
依据以下表1以及表2所列出的组成比例,制备实例1至实例5以及比 较例1至比较例3的树脂组成物。将树脂成分与溶剂(溶剂包含丁酮、环己酮、丙二醇甲醚)均匀混合为树脂胶水,使用2116玻纤布含浸胶体,并在温度171℃烘烤4分钟,以使胶片形成半固化片。取四片半固化片堆栈于热压机中高温固化,固化条件为在温度210℃固化3小时以上,固化压力为约200psi。之后,测试试片的电热性质(其测试方法均依照IPC-TM-650规范所测得),并将测试结果列于以下表1以及表2中。
在以下表1以及表2中,双官能环氧树脂为双酚A型环氧树脂、双酚F型环氧树脂、双环戊二烯环氧树脂。三官能酚醛型环氧树脂由以下化学结构式表示:
Figure PCTCN2020085927-appb-000005
苯乙烯马来酸酐树脂为SMA EF30、SMA EF40。氰酸酯树脂为双酚A型氰酸酯树脂、双环戊二烯型(DCPD)氰酸酯树脂。含磷阻燃剂为磷腈化合物SPB-100。酚酞型苯并恶嗪树脂为成都科宜CB2系列。填料为二氧化硅RCS525、G2C。
表1
Figure PCTCN2020085927-appb-000006
(固化促进剂以外的组分单位:wt%,以固成分比例计算)
(固化促进剂单位:PHR)
表2
Figure PCTCN2020085927-appb-000007
(固化促进剂以外的组分单位:wt%,以固成分比例计算)
(固化促进剂单位:PHR)
如表1所示,当热固型树脂组成物中的氰酸酯树脂含量低于10wt%时,比较例1的5GHZ@Df为0.009,比较例2的5GHZ@Df为0.00934,电热性质较差。比较例2中,酚酞型苯并恶嗪树脂与苯乙烯马来酸酐树脂的当量比为1:8,因此,5GHZ@Dk为4.08,电热性质较差。相较之下,实例1至实例4为本发明的热固型树脂组成物,使用了三官能酚醛型环氧树脂与酚酞型苯并恶嗪树脂进行搭配,因此,可达到较高的玻璃转化温度(200℃以上)。此外,实例1至实例4中,酚酞型苯并恶嗪树脂与苯乙烯马来酸酐树脂的当量比为1:1至1:5,因此,可达到良好的介电常数。另一方面,以固成分比例计算,实例1至实例4的热固型树脂组成物包括10wt%至50wt%的氰酸酯树脂,因此,可达到较低的介电损失。
如表2所示,由于比较例3没有使用三官能酚醛型环氧树脂与酚酞型苯并恶嗪树脂进行搭配,因此,玻璃转化温度低至171℃,无法达到较高的玻璃转化温度(200℃以上)。
综上所述,在本发明的热固型树脂组成物中,酚酞型苯并恶嗪树脂与苯乙烯马来酸酐树脂的当量比为1:1至1:5,因此,可达到良好的介电常数。此外,在本发明的热固型树脂组成物中,使用多官能酚醛型环氧树脂与酚酞型苯并恶嗪树脂进行搭配,因此,可达到较高的玻璃转化温度(200℃以上)。另一方面,以固成分比例计算,本发明的热固型树脂组成物包括10wt%至50wt%的氰酸酯树脂,因此,可达到较低的介电损失。

Claims (11)

  1. 一种热固型树脂组成物,其特征在于,包括:
    环氧树脂;
    氰酸酯树脂;
    酚酞型苯并恶嗪树脂;
    苯乙烯马来酸酐树脂;以及
    含磷阻燃剂,
    其中所述酚酞型苯并恶嗪树脂与所述苯乙烯马来酸酐树脂的当量比为1:1至1:5。
  2. 根据权利要求1所述的热固型树脂组成物,其特征在于,以固成分比例计算,所述热固型树脂组成物包括15wt%至40wt%的所述环氧树脂、10wt%至50wt%的所述氰酸酯树脂、1wt%至20wt%的所述酚酞型苯并恶嗪树脂、15wt%至50wt%的所述苯乙烯马来酸酐树脂以及5wt%至30wt%的所述含磷阻燃剂。
  3. 根据权利要求1所述的热固型树脂组成物,其特征在于,所述环氧树脂包括多官能酚醛型环氧树脂。
  4. 据权利要求3所述的热固型树脂组成物,其特征在于,所述多官能酚醛型环氧树脂包括三官能酚醛型环氧树脂,由以下化学结构式表示:
    Figure PCTCN2020085927-appb-100001
  5. 根据权利要求1所述的热固型树脂组成物,其特征在于,所述环氧树脂包括双官能环氧树脂及三官能酚醛型环氧树脂的组合,所述双官能环氧树脂及所述三官能酚醛型环氧树脂的重量比例为5:1至25:1。
  6. 根据权利要求5所述的热固型树脂组成物,其特征在于,所述双官能环氧树脂包括双酚A型环氧树脂、双酚F型环氧树脂或双环戊二烯环氧树脂、酚醛环氧树脂、双酚型环氧树脂、含磷环氧树脂、邻甲酚醛环氧树脂、双酚A酚醛环氧树脂、苯酚酚醛环氧树脂、萘环型环氧树脂、联苯型环氧树脂、含三嗪结构环氧树脂、含茀结构环氧树脂或其组合。
  7. 根据权利要求1所述的热固型树脂组成物,其特征在于,所述氰酸酯树脂包括双酚A型氰酸酯树脂、双环戊二烯型氰酸酯树脂、双酚F型氰酸酯树脂、酚醛型氰酸酯树脂或其组合。
  8. 根据权利要求1所述的热固型树脂组成物,其特征在于,所述苯乙烯马来酸酐树脂的分子量为3000至10000,且苯乙烯与马来酸酐的摩尔比为1:1至8:1。
  9. 根据权利要求1所述的热固型树脂组成物,其特征在于,所述酚酞型苯并恶嗪树脂由以下化学结构式表示:
    Figure PCTCN2020085927-appb-100002
  10. 根据权利要求1所述的热固型树脂组成物,其特征在于,所述含磷阻燃剂包括磷腈化合物、磷酸酯化合物、含磷环氧树脂、含磷酚醛树脂或含磷氰酸酯树脂。
  11. 根据权利要求1所述的热固型树脂组成物,其特征在于,所述热固 型树脂组成物还包括填料及固化促进剂。
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