WO2015127860A1 - 一种无卤阻燃型树脂组合物 - Google Patents
一种无卤阻燃型树脂组合物 Download PDFInfo
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- WO2015127860A1 WO2015127860A1 PCT/CN2015/072756 CN2015072756W WO2015127860A1 WO 2015127860 A1 WO2015127860 A1 WO 2015127860A1 CN 2015072756 W CN2015072756 W CN 2015072756W WO 2015127860 A1 WO2015127860 A1 WO 2015127860A1
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- 0 *N(C1)COc2c1cc(*c(cc1)cc3c1OCN(*)C3)cc2 Chemical compound *N(C1)COc2c1cc(*c(cc1)cc3c1OCN(*)C3)cc2 0.000 description 2
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- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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- B32B2457/08—PCBs, i.e. printed circuit boards
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Definitions
- the present invention relates to a resin composition, and more particularly to a halogen-free flame-retardant resin composition and a laminate for a prepreg, a laminate and a printed circuit board produced therefrom.
- Laminates for circuit boards have become one of the major laminate types on the market.
- phosphorus-nitrogen synergistic flame retardancy can be achieved using a compound containing a dihydrobenzoxazine ring and a phosphorus-containing compound.
- Laminates for printed circuit boards made using benzoxazine have a certain market size due to their low water absorption, excellent heat resistance and high reliability.
- the hardness of the benzoxazine resin after curing is high, and the brittleness is larger than that of the epoxy resin, which may cause a problem of large wear of the drill plate and difficulty in processing when the sheet is processed. Accordingly, the toughening modification of benzoxazine has become the focus of research in this field.
- a common method of toughening is to add a thermoplastic resin as a modified toughening agent, such as a blend of high toughness polyaryletherketone, polyarylene ether sulfone thermoplastic resin and benzoxazine.
- the method can effectively form a phase separation structure, reduce the expansion of the internal crack of the material, and absorb the impact energy of the material.
- Another method is to add rubber toughening, such as amino terminated nitrile rubber ATBN, carboxylated nitrile rubber CTBN and other kinds of core shell rubber. This method can also effectively absorb the impact energy of the material and increase the elongation at break.
- the plate made of the benzoxazine modified by the above method has a problem that the glass transition temperature is lowered, the heat resistance is largely lowered and unstable, and the moist heat resistance is drastically lowered. Due to the complicated structure of the system, Anti-CAF property It is difficult to get a guarantee.
- CN102850545A proposes to prepare a blended resin having high toughness and high heat resistance by melt blending/solution blending of trimethylhexamethylene bismaleimide resin and benzoxazine resin.
- the resin mixture must form a specific phase at a specific ratio. In this case, the two resins are mixed with other components in actual use. It is extremely prone to phase separation, which seriously restricts its application prospects in the electronics industry.
- CN102134375 provides a halogen-free high Tg resin composition and prepregs and laminates made therefrom.
- the resin composition provided has high Tg, low water absorption, low CET, good dielectric properties, etc., but its toughness is poor, machining is difficult, and industrialization cannot be achieved.
- CN102977551A provides a halogen-free resin composition and a method of producing a copper clad laminate therewith.
- the halogen-free resin composition provided has excellent heat resistance and good processability, but its toughness is insufficient and needs to be further improved.
- One of the objects of the present invention is to provide a halogen-free flame-retardant resin composition which is suitably combined with a suitable ratio by combining a benzoxazine resin and a bismaleimide resin.
- the polyepoxy compound, the phosphorus-containing flame retardant, the curing agent and the like make the composition improve the toughness of the existing benzoxazine resin while ensuring heat resistance and moist heat resistance.
- a second object of the present invention is to provide a prepreg made of a halogen-free flame-retardant resin composition according to one of the objects, which has excellent flame retardancy and high vitrification.
- Change temperature Degree (Tg) high heat resistance, high bending strength, high reliability, low dielectric loss factor, low water absorption, low coefficient of thermal expansion (CTE), etc.; in addition, the prepreg also has excellent resistance Chemical and mechanical processing properties.
- a third object of the present invention is to provide a laminate made of a halogen-free flame-retardant resin composition according to one of the objects, which has excellent flame retardancy and high glass transition temperature. (Tg), high heat resistance, high bending strength, high reliability, low dielectric loss factor, low water absorption, low coefficient of thermal expansion (CTE), etc.; in addition, the laminate also has excellent chemical resistance And machining performance.
- Tg flame retardancy and high glass transition temperature.
- CTE coefficient of thermal expansion
- a fourth object of the present invention is to provide a laminate for a printed circuit made of a halogen-free flame-retardant resin composition according to any one of the objects, wherein the laminate for a printed circuit board has excellent flame retardancy. At the same time, it has the advantages of high glass transition temperature (Tg), high heat resistance, high bending strength, high reliability, low dielectric loss factor, low water absorption, low coefficient of thermal expansion (CTE), etc. Laminates for circuit boards also have excellent chemical and mechanical properties.
- Tg glass transition temperature
- CTE coefficient of thermal expansion
- a halogen-free flame-retardant resin composition comprising, by weight of the organic solids, the following components:
- (A) bismaleimide resin 1 to 10 parts by weight;
- (E) curing agent 1 to 25 parts by weight
- the curing agent is an amine curing agent and/or a phenol resin curing agent.
- Bismaleimide has a moderately long aliphatic segment, and in the halogen-free flame-retardant resin composition of the present invention, a bismaleimide resin is used in combination with a benzoxazine resin in a resin composition. Curing The stage and the other resin of the system undergo a curing cross-linking reaction, and under the joint action of the bismaleimide five-membered heterocyclic ring and the aliphatic segment, the high glass transition temperature and high heat resistance of the halogen-free flame-retardant resin are maintained. High heat and humidity resistance, improving toughness and reducing processing difficulty.
- the viscosity of the bismaleimide resin is large, which makes the process control of the resin production process difficult, and the controllable production cannot be achieved.
- the invention realizes the purpose of reducing the viscosity of the resin by selecting various raw materials in the halogen-free flame-retardant resin composition and the optimal arrangement of the content between the raw materials, and solves the technical problem that the process control is difficult in the production process, and is controllable. Chemical production offers the possibility.
- the bismaleimide resin is added in an amount of 1 to 10 parts by weight, for example, 2 parts by weight, 6 parts by weight, 8 parts by weight, 9 parts by weight, or the like. It is preferably from 3 to 7 parts by weight.
- the bismaleimide resin of the present invention is obtained by any one or at least two of the following bismaleimide monomers:
- R and X are independently selected from -CH 2 -, Any one of them;
- R 2 and X 2 are independently selected from H or CH 3 .
- the bismaleimide is a bifunctional compound having a maleimide (MI) as a living end group.
- maleimide (MI) is a five-membered heterocyclic ring at both ends.
- maleimide (MI) at both ends is bonded through a linear or branched alkylene group, and the number of carbon atoms of the alkylene group is not specified. Preferably, it is 5-9. In the alkylene group, the number of carbon atoms is too large, and the solubility of the bismaleimide resin in a solvent is lowered.
- the alkylene group (MI) at the two ends is bonded to the alkylene group.
- the four methyl groups, that is, the alkylene group is a branched alkylene group, typically, but not limited to, the number of methyl groups linked to the alkylene group is 1, 2, 3, 4, and the like.
- the structure of the bismaleimide monomer of the present invention is not specifically limited, and those skilled in the art can select, but are not limited to, the structure of the bismaleimide resin, and further preferably, The structure of the bismaleimide monomer is Or
- a benzoxazine resin or a compound having a dihydrobenzoxazine ring
- a benzoxazine resin is a benzo six-membered heterocyclic compound synthesized from a phenol, a primary amine, and a formaldehyde, and is subjected to ring-opening polymerization to produce nitrogen-containing A network structure similar to phenolic resin.
- the benzoxazine resin can improve the flame retardancy, moisture resistance, heat resistance, mechanical properties and electrical properties required for the halogen-free resin composition, the prepreg obtained from the resin, the laminate, and the like.
- the benzoxazine resin is added in an amount of 30 to 60 parts by weight, for example, 35 parts by weight, 43 parts by weight, 52 parts by weight, 58 parts by weight or the like. If the amount of benzoxazine resin added is too large, the sheet will be too hard to be processed, and too little will cause the water absorption rate of the system to rise, and the glass transition temperature (Tg), storage modulus, dielectric properties, etc. will decrease; preferably 40 to 60 parts by weight.
- Tg glass transition temperature
- the type of the benzoxazine resin in the present invention is not particularly limited, and a benzoxazine resin which is known to those skilled in the art can be used in the present invention.
- the benzoxazine resin of the present invention is selected from the group consisting of bisphenol A type benzoxazine resin, bisphenol F type benzoxazine resin, phenolphthalein type benzoxazine resin, and MDA type benzoxazine resin. Any one or a combination of at least two of them.
- the structure of the bisphenol A type benzoxazine resin monomer and the bisphenol F type benzoxazine resin monomer and the phenolphthalein type benzoxazine resin monomer are as shown by the formula ( ⁇ ):
- R 3 is R 4 is -CH 2 - or Any one of them.
- R 4 When R 4 is When the structural formula ( ⁇ ) is a bisphenol A type benzoxazine resin monomer; when R 4 is -CH 2 -, the structural formula ( ⁇ ) is a bisphenol F type benzoxazine resin monomer; when R 4 is In the formula, the structural formula ( ⁇ ) is a phenolphthalein type benzoxazine resin monomer.
- MDA type benzoxazine resin also known as (4,4'-diaminodiphenylmethane) type benzoxazine resin, has a structure as shown by formula ( ⁇ ):
- a bisphenol F type benzoxazine resin has a methylene group in its molecular structure, and its viscosity is relatively low while maintaining a certain rigidity; and a phenolphthalein type benzoxazole
- the heat resistance of the azine resin and the MDA type benzoxazine resin is better.
- the combination of the benzoxazine resin of the present invention typically, but not exclusively, includes a combination of a bisphenol A type benzoxazine resin and a phenolphthalein type benzoxazine resin, a MDA type benzoxazine resin and a bisphenol F type.
- the weight of the benzoxazine resin of the present invention accounts for 50% of the total weight of the resin in the halogen-free flame-retardant resin composition, based on the weight of the organic solid.
- the total weight of the resin in the halogen-free flame-retardant resin composition is a bismaleimide resin, a benzoxazine resin, a polyepoxide, and a phosphorus-containing resistance in the halogen-free flame-retardant resin composition.
- the sum of the weight of the fuel and curing agent (the weight refers to the weight of the organic solid).
- the glass transition temperature (Tg) of the composition can be further increased, and the thermal decomposition temperature can reach 385 ° C or more. It is easy to obtain a lower water absorption rate (less than 0.1%). Due to the above performance improvement, the board made of the resin composition will have more obvious improvement in reliability and has a certain cost advantage.
- the benzoxazine resin needs to be blended with the bismaleimide resin before being mixed with other component resins.
- the present invention is not particularly limited in terms of the manner of blending, such as solution blending, or melt blending, which can be used in the present invention.
- the specific operation of the typical but non-limiting blending of the benzoxazine resin and the bismaleimide resin solution is as follows: the bismaleimide resin and the benzoxazine resin are respectively dissolved at a temperature of 20 to 50 ° C. In the solvent, after the dissolution is completed, the two resins are mixed, and stirring is continued until the mixture is uniform.
- the specific operation of the typical but non-limiting melt blending of the benzoxazine resin and the bismaleimide resin is as follows: at a temperature of 80-150 ° C, the bismaleimide resin and the benzoxazine resin are separately placed. Stir in a kettle with a stirrer and heating device for 5-10 minutes.
- the polyepoxy compound can obtain basic mechanical and thermal properties of the halogen-free resin composition after curing, the prepreg obtained from the resin, a laminate, and the like.
- the polyepoxy compound is added in an amount of 10 to 40 parts by weight, for example, 15 parts by weight, 23 parts by weight, 32 parts by weight, 38 parts by weight or the like, preferably 10 Up to 25 parts by weight. If the amount of polyepoxide added is too large, the water absorption rate will increase, the coefficient of thermal expansion of the system will increase, and too little will result in insufficient bonding properties of the composition.
- the laminate and copper foil/, laminate layer and layer are produced. Insufficient adhesion, plus Deterioration of workability.
- the specific selection of the polyepoxy compound in the present invention is not limited.
- the polyepoxy compound of the present invention is selected from the group consisting of bisphenol A type epoxy resin, bisphenol F type epoxy resin, phenol type novolac epoxy resin, o-cresol novolac type epoxy resin, bisphenol A type phenol no.
- Epoxy resin epoxy resin having biphenyl structure, epoxy resin having aralkyl structure, dicyclopentadiene epoxy resin, halogen-free epoxy resin having oxazolidinone ring, epoxidized polybutylene Any one or at least two of the olefins are mixed.
- the various polyepoxy compounds listed may be used singly or in combination.
- the phosphorus-containing flame retardant according to the present invention can improve the combustion performance of the halogen-free resin composition and the prepreg, laminate, and the like obtained from the resin, and achieve a flame retarding effect.
- the phosphorus-containing flame retardant is added in an amount of 5 to 25 parts by weight, for example, 7 parts by weight, 12 parts by weight, 18 parts by weight, 26 parts by weight or the like in the halogen-free flame-retardant resin composition of the present invention. If the amount of the phosphorus-containing flame retardant is too large, the key properties such as heat resistance and moisture resistance of the resin composition will be lowered, and the precipitation of the phosphorus-containing flame retardant may bring a failure of the PCB processing. Too little, the produced sheet will cause insufficient flame retardant performance, posing a safety hazard for the end product.
- the phosphorus-containing flame retardant is added in an amount of 8 to 18 parts by weight in the halogen-free flame-retardant resin composition of the present invention.
- the type of the phosphorus-containing flame retardant of the present invention is not particularly limited, and examples thereof include phosphates and compounds thereof, phosphorus phenanthrenes and derivatives thereof, and the like which are easily conceivable by those skilled in the art.
- the phosphorus-containing flame retardant of the present invention is selected from the group consisting of resorcinol-bis(diphenyl phosphate), bisphenol A-bis(diphenyl phosphate), resorcinol-bis (2,6) Any one or a combination of at least two of -dimethylphenol phosphate), dimethyl methyl phosphate or phosphazene composition is preferably a phosphazene compound.
- the phosphazene compound of the present invention is a phosphazene compound containing a cyclic compound and a chain, and has a softening point of 60 to 150 °C.
- the phosphazene compound is used as the phosphorus-containing flame retardant, it is preferably used in an amount of 5 to 25 parts by weight, further preferably 8 to 18 parts by weight.
- Halogen-free flame retardant when phosphazene compound is selected as flame retardant The resin composition is more excellent in chemical resistance and less prone to hydrolysis, and has more excellent chemical resistance and anti-CAF properties, that is, higher reliability, in the preparation of a subsequent laminate for printed circuit.
- the curing agent of the present invention is capable of chemically reacting with a resin in the halogen-free resin composition to form a network-like solid polymer, which causes the linear resin to become a tough bulk solid.
- the curing agent is added in an amount of 1 to 25 parts by weight, for example, 3 parts by weight, 8 parts by weight, 15 parts by weight, 18 parts by weight, 24 parts by weight or the like.
- the amount of the curing agent added is too large, more than 25 parts by weight causes the heat resistance of the cured resin to deteriorate, and is too small.
- the amount is less than 1 part by weight, the resin composition is insufficiently cured and the glass transition temperature is lowered.
- the type of the curing agent is not specifically limited in the present invention.
- the phenolic resin-based curing agent is selected from the group consisting of a phenol novolac resin, a bisphenol A type phenol resin, a nitrogen-containing phenol resin, a biphenolic resin, an aralkyl phenol resin, an alkyl phenol aldehyde or a Any one or a combination of at least two of the phosphorus phenolic resins.
- the amine curing agent is selected from the group consisting of dicyandiamide curing agent or/and an aromatic amine curing agent;
- the aromatic amine curing agent is selected from the group consisting of diaminodiphenyl ether, diaminodiphenyl sulfone, and diamino bis Any one or a combination of at least two of phenylmethane, m-xylylenediamine or benzidine.
- the curing accelerator can accelerate the reaction rate of the resin and the curing agent, lower the curing temperature, shorten the curing time, reduce the amount of the curing agent, and can improve the mechanical and chemical properties of the resin to some extent. Therefore, in the halogen-free flame-retardant resin composition of the present invention, it is preferable to further include a curing accelerator: 0.1 to 1 part by weight, for example, 0.2 part by weight, 0.5 part by weight, 0.7 part by weight, 0.9 part by weight or the like.
- the type of the curing accelerator is not specifically limited in the present invention.
- the curing accelerator is selected from the group consisting of imidazoles, preferably from any of 2-methylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole or 2-undecylimidazole Kind or a combination of at least two.
- the filler is further included: 5 to 60 parts by weight, for example, 6 parts by weight, 12 parts by weight, 23 parts by weight, 32 parts by weight, 38 Parts by weight, 45 parts by weight, 49 parts by weight, 56 parts by weight, etc., preferably 25 to 40 parts by weight.
- the type of the filler is not particularly limited in the present invention, and may be an inorganic filler, an organic filler, or a mixture of an inorganic filler and an organic filler.
- the filler is selected from the group consisting of inorganic fillers or/and organic fillers;
- the inorganic filler is selected from the group consisting of aluminum hydroxide, silica, talc, boehmite, zeolite, wollastonite, magnesia, calcium silicate, Any one or a combination of at least two of calcium carbonate, clay or mica;
- the organic filler is selected from any one or a combination of at least two of melamine and/or melamine cyanurate.
- the present invention may also add a known additive such as a thermoplastic resin, an inorganic filler, a coloring pigment, an antifoaming agent, a surfactant, a flame retardant, an ultraviolet absorber, an antioxidant, a flow regulator, etc., as needed.
- a known additive such as a thermoplastic resin, an inorganic filler, a coloring pigment, an antifoaming agent, a surfactant, a flame retardant, an ultraviolet absorber, an antioxidant, a flow regulator, etc.
- the method for preparing the halogen-free flame-retardant resin composition of the present invention can be selected by those skilled in the art with reference to the preparation method of the existing resin composition, and the present invention is not particularly limited.
- a typical but non-limiting method of preparing the halogen-free flame-retardant resin composition comprises the steps of:
- the formulated amount of the phosphorus-containing flame retardant is dissolved in a certain liquid solvent (such as methyl ethyl ketone MEK, propylene glycol methyl ether PM, etc.), stirred until completely dissolved, and then liquid benzoxazine resin, polyepoxy resin and double Maleimide resin, and other additive components (such as thermoplastic resin, inorganic filler, coloring pigment and other additives); then add the curing agent and accelerator dissolved in the liquid solvent, continue to stir evenly, and finally use the liquid solvent
- a certain liquid solvent such as methyl ethyl ketone MEK, propylene glycol methyl ether PM, etc.
- the halogen-free flame-retardant resin composition of the present invention comprises, by weight of the organic solids, the following components:
- (A) bismaleimide resin 1 to 10 parts by weight;
- (E) curing agent 1 to 25 parts by weight
- (G) filler 5 to 60 parts by weight
- the curing agent is an amine curing agent or a phenol resin curing agent.
- the halogen-free flame-retardant resin composition of the present invention comprises the following components in parts by weight of the organic solid:
- (E) curing agent 1 to 25 parts by weight
- (G) filler 25 to 40 parts by weight
- the curing agent is an amine curing agent or a phenol resin curing agent.
- the prepreg according to the second object of the present invention is made of a halogen-free flame-retardant resin composition as described in one of the objects.
- the prepreg is a combination of a resin matrix and a reinforcement formed by impregnating a continuous fiber or fabric under a strictly controlled condition with a resin matrix, and is an intermediate material for manufacturing a composite material.
- the prepreg according to the present invention comprises a binder and a halogen-free flame-retardant resin composition attached to the binder.
- the binder is a nonwoven fabric or other fabric, typically but not limited to natural fibers, organic synthetic fibers or inorganic fibers.
- the prepreg is obtained by subjecting the base material to impregnation and drying treatment in a halogen-free flame-retardant resin composition provided in one of the purposes; that is, the prepreg comprises a base material and passes through A halogen-free flame-retardant resin composition adhered to the base after impregnation and drying treatment.
- the typical but non-limiting preparation method of the prepreg includes The following steps:
- the impregnated base material of the halogen-free flame-retardant resin provided by one of the purposes is prepared by heating and drying the impregnated glass cloth in an oven at 140 to 200 ° C for 3 to 8 minutes.
- the laminate of the third object of the present invention comprises a plurality of prepregs according to the two objects of the superposition.
- a laminate is a type of laminate which is a composite of two or more layers of resin-impregnated fibers or fabrics (i.e., prepregs) which are laminated and heat-pressed.
- the laminate of the present invention is preferably obtained by laminating and thermocompression bonding of two or more layers of the prepreg according to the second purpose, that is, each prepreg used for the laminated composite laminate comprises a base material. And a halogen-free flame-retardant resin composition adhered to the base material after being impregnated and dried.
- the laminate of the present invention is prepared by laminating one or more prepregs by heat and pressure to form a laminate.
- a laminate for a printed circuit according to the fourth aspect of the present invention comprising: a plurality of prepregs according to the purpose of superimposing, and a metal of one or both sides of the prepreg after lamination Foil
- each of the prepregs comprises a base material and a halogen-free flame-retardant resin composition adhered to the base material after being impregnated and dried.
- a laminate for a printed circuit is obtained by coating a metal foil on one or both sides of a conventional laminate.
- the metal foil of the present invention is not particularly limited, and typical, but not limited to, copper foil, nickel foil, aluminum foil, SUS foil, and the like.
- the present invention has the following beneficial effects:
- the present invention achieves the object of improving the toughness of the existing benzoxazine resin while ensuring heat resistance and moist heat resistance by adding a suitable amount of bismaleimide resin;
- the present invention provides a halogen-free flame-retardant resin composition having a low viscosity by introducing a polyepoxy resin, thereby overcoming the problem of excessive viscosity caused by introduction of the bismaleimide resin and difficulty in industrial production;
- the bismaleimide resin selected by the invention contains a small amount of branching, which not only overcomes the problem of difficulty in dissolution caused by more branching, but also avoids the disadvantage that the unbranched sample is easy to crystallize, and realizes the improvement of mechanical properties. Without impairing the operability of the production process;
- the prepreg, the laminate, and the laminate for printed circuit provided by the present invention have excellent flame retardancy, and also have high glass transition temperature (Tg), high heat resistance, high bending strength, and high reliability. Advantages, lower dielectric loss factor, low water absorption, low coefficient of thermal expansion (CTE), etc.; more expensive, the prepreg, laminate, printed circuit laminate also has excellent chemical resistance and mechanical Processing performance.
- Tg glass transition temperature
- CTE coefficient of thermal expansion
- A is a bismaleimide resin
- A-1 is a bismaleimide resin in which the monomer is 1,6-bismaleimidohexane, and the specific structure of the 1,6-bismaleimidohexane is:
- B-1 is a model of LZ 8280 purchased from Huntsman Advanced Materials of the United States.
- B-2 is a model D125 purchased from Sichuan Dongcai Technology Group Co., Ltd.;
- C-1 is a product of the model HP-7200HHH purchased from Japan DIC Corporation.
- C-2 is a product of KF8100 purchased from KOLON Corporation of Korea;
- D is a phosphorus-containing flame retardant, and is a product of SPB-100 purchased from Otsuka Chemical Co., Ltd., Japan;
- E-1 is a product of the model EPONOL 6635M65 purchased from Korea's momentive company.
- E-2 is a model of DICY purchased from Ningxia Darong Chemical.
- F curing accelerator which is 2-phenylimidazole purchased from Shikoku Chemicals Co., Ltd.;
- G-1 is aluminum hydroxide having a purity of 99% or more.
- G-2 is silica having a purity of 99% or more.
- A-2 in Table 2 is a bismaleimide resin of trimethylhexamethylene bismaleimide described in CN102850545A, the trimethylhexamethylene bismaleimide
- the specific structure of the amine is:
- halogen-free flame-retardant resin compositions provided in Examples 1 to 8 and Comparative Examples 1 to 8 were prepared as follows, and laminates for printed circuit boards were prepared, and the prepared laminates were subjected to performance tests.
- the preparation method of the laminate for printed circuit board comprises:
- step 2 8 pieces of prepreg and 2 pieces of one ounce (35 ⁇ m thick) metal foil are laminated together;
- the operating conditions of the lamination are: when the temperature is 80-140 ° C, the controlled heating rate is 1.5-2.5 ° C / min; when the outer layer temperature is 80-100 ° C, the full pressure is applied, the full pressure is applied. It is about 350 psi; when curing, the temperature of the material is controlled at 195 ° C and kept for more than 60 minutes.
- the measurement was carried out in accordance with the DSC method specified in 2.4.25 of IPC-TM-650.
- the peel strength of the metal cap layer was tested in accordance with the experimental conditions of "after thermal stress" in the method specified in 2.4.8 of IPC-TM-650.
- the sample (100 ⁇ 100 mm laminate for printed circuit) was held in a pressure cooker at 121 ° C and 105 kPa for 2 hours; then, the sample was immersed in a solder bath at 260 ° C for 20 seconds; Observe (h 1 ) whether there is delamination, (h 2 ) whether white spots or wrinkles occur, and record;
- ⁇ indicates no change, ⁇ indicates that white spots occurred, and ⁇ indicates that delamination occurred.
- the dielectric loss factor at 1 GHz was measured according to the method specified in 2.5.5.5 of IPC-TM-650 according to the resonance method using a strip line.
- the test was carried out in accordance with the method specified in 2.4.4 of IPC-TM-650, that is, the load was applied to a sample of a predetermined size and shape at room temperature for measurement.
- the 100 ⁇ 100 mm substrate was baked in an oven at 200° C. for 4 hours, and the exudation of the interlaminar material was observed with the naked eye: (h 1 ) no exudation, indicated by the symbol ⁇ ; (h 2 ) , denoted by the symbol ⁇ ; (h 3 ) is more, denoted by the symbol ⁇ .
- the substrate with a thickness of 1.60mm and 100 ⁇ 100mm is horizontally placed on the gantry.
- the circular passage with a diameter of 8cm inside the gantry runs through the upper and lower sections of the gantry.
- a 1Kg weight cross hammer will be selected, and the diameter of the hammer head will be 10mm.
- the head is placed at a height of 1 m, aligned with the circular cross section of the gantry, and vertically falls on the sheet, and the area of the white streaks of the sheet is calculated.
- the halogen content of the copper clad laminate was measured by an oxygen cylinder combustion method and an ion chromatography method in accordance with JPCA-ES-01-2003 "Halogen Free Copper Clad Test Method".
- the halogen-free resin composition provided in Comparative Example 4 was difficult to dissolve, and the composition had a large viscosity and a low sizing yield. In actual operation, the decrease of ambient temperature is likely to cause the precipitation of bismaleimide resin, which seriously affects production efficiency and has certain quality hazards.
- the halogen-free resin compositions provided in Examples 1 to 8 can be well adapted to existing equipment and process control conditions, and can be continuously and stably produced without adding additional equipment, with high rubber coating yield and controllable quality.
- the composition containing no bismaleimide had a larger falling weight area and poor toughness; a composition not containing a polyepoxy (Comparative Example 2)
- the peel strength is very low, the bending strength is significantly reduced, the reliability (anti-CAF) is poor, and 4 reflects that the bismaleimide excess composition (Comparative Example 3), although the toughness is better, but peeling off
- the strength is lowered, the bending strength is lowered, and the comprehensive performance of the composition is affected;
- the bismaleimide resin having a large number of branches has a problem of difficulty in dissolution, a problem of poor workability; and a benzoxazine resin.
- the amount has a significant effect on the composition. If the amount used is less than 30 parts (Comparative Example 5), the phenomenon of insufficient flame retardancy occurs; the amount used exceeds 60 parts (Comparative Example 6), although it is easy to obtain a higher Tg, but simultaneously The pore performance is reduced; the amount of polyepoxy resin is reduced to less than 10 parts (Comparative Example 7), and the peel strength will suddenly drop, affecting the use, if the polyepoxide is excessive (pair In proportion 8), the glass transition temperature, flammability and reliability are all lowered.
- the present invention effectively combines the types, types, and contents of the components of the resin composition.
- the selection of the epoxy resin allows the provided resin composition to ensure high peel strength while increasing the process operability of the composition; the selection of the bismaleimide resin allows the provided The resin composition maintains high toughness while maintaining high characteristics such as high glass transition temperature (Tg) and high reliability.
- the laminate for printed circuit boards prepared by the halogen-free flame-retardant resin composition provided by the present invention can maintain high glass transition temperature, high reliability, flame resistance, solder resistance, chemical resistance, and low water absorption. Simultaneous and low dielectric loss factor, the brittleness of the benzoxazine system is greatly reduced, and the toughness of the sheet is improved.
- the halogen content can reach the flame retardancy test UL94 in the ULC halogen-free standard. -0 standard; the halogen content of the present invention is less than 0.09% by weight, thereby achieving environmental protection.
- the glass transition temperature (Tg) of the composition can reach 160 ° C or higher, and the flame resistance can reach UL94 V-0 level. At the same time, the water absorption rate is maintained at about 0.10%, and the toughness is good.
- the content of benzoxazine resin is less than 30 parts, although the peeling strength is improved, the glass transition temperature (Tg) decreases significantly, the water absorption rate increases, and the Anti-CAF decreases, which seriously affects the comprehensive performance of the composition.
- the content of the benzoxazine is more than 60 parts, the toughness of the composition is deteriorated, and the workability is lowered, which is not satisfactory.
- Reasonable use of the filler can reduce the water absorption of the composition, increase its reliability, and enhance the overall performance of the resin composition.
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Abstract
Description
Claims (12)
- 一种无卤阻燃型树脂组合物,其特征在于,所述组合物,以有机固形物重量份计,包括如下组分:(A)双马来酰亚胺树脂:1至10重量份;(B)苯并噁嗪树脂:30至60重量份;(C)聚环氧化合物:10至40重量份;(D)含磷阻燃剂:5到25重量份;(E)固化剂:1至25重量份;所述固化剂为胺类固化剂和/或酚醛树脂类固化剂。
- 如权利要求1或2所述的组合物,其特征在于,所述的苯并噁嗪树脂选 自双酚A型苯并噁嗪树脂、双酚F型苯并噁嗪树脂、酚酞型苯并噁嗪树脂以及MDA型苯并噁嗪树脂中的任意1种或至少2种的组合。
- 如权利要求1~3之一所述的组合物,其特征在于,所述的聚环氧化合物选自双酚A型环氧树脂、双酚F型环氧树脂、苯酚型酚醛环氧树脂、邻甲酚醛型环氧树脂、双酚A型酚醛环氧树脂、具有联苯结构的环氧树脂、具有芳烷基结构的环氧树脂、双环戊二烯环氧树脂、具有噁唑烷酮环的无卤环氧树脂、环氧化聚丁二烯中的任意1种或至少2种的混合。
- 如权利要求1~4之一所述的组合物,其特征在于,所述的含磷阻燃剂选自间苯二酚-双(磷酸二苯酯)、双酚A-双(磷酸二苯酯)、间苯二酚-双(2,6-二甲苯基磷酸酯)、甲基磷酸二甲酯或磷腈化合物中的任意1种或至少2种的组合,优选磷腈化合物。
- 如权利要求1~5之一所述的组合物,其特征在于,所述酚醛树脂类固化剂选自苯酚酚醛树脂、双酚A型酚醛树脂、含氮酚醛树脂、联苯酚醛树脂、芳烷基酚醛树脂、烷基酚醛或含磷酚醛树脂中的任意1种或至少2种的组合;所述胺类固化剂选自双氰胺固化剂或/和芳香胺固化剂;所述芳香胺固化剂选自二氨基二苯醚、二氨基二苯砜、二氨基二苯基甲烷、间苯二甲胺或联苯胺中的任意1种或至少2种的组合。
- 如权利要求1~6之一所述的组合物,其特征在于,所述无卤阻燃型树脂组合物中,双马来酰亚胺树脂的含量为3至7重量份;优选地,以有机固形物重量计,所述苯并噁嗪树脂占所述无卤阻燃型树脂组合物中树脂总重量的50%以上;优选地,所述无卤阻燃型树脂组合物中,苯并噁嗪树脂的含量为40至60重量份;优选地,所述无卤阻燃型树脂组合物中,聚环氧化合物的含量为10至25重量份;优选地,所述无卤阻燃型树脂组合物中,含磷阻燃剂的含量为8至18重量份。
- 如权利要求1~7之一所述的组合物,其特征在于,所述组合物还包括(F)固化促进剂:0.1至1重量份;优选地,所述固化促进剂选自咪唑类化合物,优选自2-甲基咪唑、2-乙基-4-甲基咪唑、2-苯基咪唑或2-十一烷基咪唑中的任意1种或至少2种的组合。
- 如权利要求1~8之一所述的组合物,其特征在于,所述组合物还包括(G)填料:5至60重量份;优选25至40重量份;优选地,所述填料选自无机填料或/和有机填料;优选地,所述无机填料选自氢氧化铝,二氧化硅,滑石粉,勃姆石,沸石、硅灰石、氧化镁、硅酸钙、碳酸钙、粘土或云母中的任意1种或至少2种的组合;优选地,所述有机填料选自三聚氰胺和/或三聚氰胺氰尿酸盐中的任意1种或至少2种的组合。
- 一种预浸料,其特征在于,所述预浸料包括权利要求1~9之一所述的无卤阻燃型树脂组合物;优选地,所述预浸料包括基料和附着在所述基料上的无卤阻燃型树脂组合物;优选地,所述预浸料包括基料及通过含浸、干燥处理后附着在所述基料上的无卤阻燃型树脂组合物。
- 一种层压板,其特征在于,所述层压板包括数个叠合的权利要求10所 述的预浸料;优选地,每一预浸料包括基料和,通过含浸、干燥处理后附着在所述基料上的无卤阻燃型树脂组合物。
- 一种印制电路用层压板,其特征在于,所述印制电路用层压板包括数个叠合的权利要求10所述的预浸料,及设于叠合后的预浸料的单面或双面的金属箔;其中,每个所述预浸料均包括基料和,通过含浸、干燥处理后附着在所述基料上的无卤阻燃型树脂组合物。
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US10544255B2 (en) | 2015-12-28 | 2020-01-28 | Shengyi Technology Co., Ltd. | Epoxy resin composition, prepreg and laminate prepared therefrom |
CN117384457A (zh) * | 2023-10-16 | 2024-01-12 | 江苏耀鸿电子有限公司 | 一种无卤阻燃碳氢树脂覆铜板及其制备方法 |
CN117384457B (zh) * | 2023-10-16 | 2024-03-19 | 江苏耀鸿电子有限公司 | 一种无卤阻燃碳氢树脂覆铜板及其制备方法 |
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KR101814322B1 (ko) | 2018-01-30 |
US20170009074A1 (en) | 2017-01-12 |
US10696844B2 (en) | 2020-06-30 |
EP3112422B1 (en) | 2021-01-20 |
CN103834168B (zh) | 2016-09-07 |
CN103834168A (zh) | 2014-06-04 |
KR20160126043A (ko) | 2016-11-01 |
EP3112422A1 (en) | 2017-01-04 |
EP3112422A4 (en) | 2017-08-16 |
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