阅读说明：本技术 一种改性氟化脂环族环氧树脂及其制备方法 (Modified fluorinated alicyclic epoxy resin and preparation method thereof ) 是由 高楠 张英强 王晓瑞 于 2020-12-04 设计创作，主要内容包括：本发明公开了一种改性氟化脂环族环氧树脂,其特征在于,原料包括氟化丙烯酸酯单体,丙烯酸酯类单体,脂环族环氧丙烯酸脂化合物,乳化剂,引发剂及去离子水。制备方法为将氟化丙烯酸酯单体、丙烯酸酯类单体、脂环族环氧丙烯酸脂化合物的混合物滴加到去离子水、乳化剂中,升温至70～80℃,再滴加引发剂,搅拌下反应,然后升温至85～90℃,搅拌下反应,即得改性氟化脂环族环氧树脂。该改性的氟化脂环族环氧树脂具有UV快速固化能力,固化物具有较低的介电常数,可广泛用于超大规模集成电路工艺。(The invention discloses a modified fluorinated alicyclic epoxy resin which is characterized in that raw materials comprise a fluorinated acrylate monomer, an alicyclic epoxy acrylate compound, an emulsifier, an initiator and deionized water. The preparation method comprises the steps of dropwise adding a mixture of fluorinated acrylate monomer, acrylate monomer and alicyclic epoxy acrylate compound into deionized water and emulsifier, heating to 70-80 ℃, dropwise adding an initiator, reacting under stirring, heating to 85-90 ℃, and reacting under stirring to obtain the modified fluorinated alicyclic epoxy resin. The modified fluorinated alicyclic epoxy resin has the UV fast curing capability, and a cured product has a lower dielectric constant, so that the modified fluorinated alicyclic epoxy resin can be widely applied to a super-large-scale integrated circuit process.)

1. The modified fluorinated alicyclic epoxy resin is characterized in that the raw materials comprise the following components in parts by weight:

2. the modified fluorinated alicyclic epoxy resin according to claim 1, wherein the acrylic monomer is any one or a mixture of methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, isobornyl acrylate and cyclohexyl methacrylate.

3. The modified fluorinated cycloaliphatic epoxy resin of claim 1, wherein the cycloaliphatic epoxy acrylate compound has the formula:

in the formula, R is H or CH₃And n is a natural number of 1 to 6.

4. The modified fluorinated alicyclic epoxy resin according to claim 1, wherein the emulsifier is any one or a mixture of sodium dodecyl sulfate, sodium dodecylbenzenesulfonate, alkyldiphenyloxide disulfonate, ethoxylated ammonium alkylphenol sulfate, nonylphenol polyoxyethylene ether, and isotridecanol polyoxyethylene ether.

5. The modified fluorinated cycloaliphatic epoxy resin of claim 1, wherein the initiator is ammonium persulfate, potassium persulfate, or a mixture thereof.

6. The modified fluorinated alicyclic epoxy resin according to claim 1, wherein the fluorinated acrylate monomer comprises the following components in parts by weight:

the preparation method of the fluorinated acrylate monomer comprises the following steps: in N₂Dripping hexafluoroisopropanol into isophorone diisocyanate under the condition of atmosphere and 30-35 ℃, then dripping 1 drop of catalyst, and stirring for reacting for 2 hours after dripping; then adding hydroxyethyl acrylate and supplementing the rest catalyst; adjusting the temperature to 80-85 ℃, and stirring for 2-3 hours to obtain the fluorinated acrylate monomer.

7. The modified fluorinated cycloaliphatic epoxy resin of claim 6, wherein the catalyst is dibutyltin dilaurate.

8. The modified fluorinated alicyclic epoxy resin according to claim 6, wherein the fluorinated acrylate monomer comprises the following components in parts by weight:

or comprises the following components:

9. the modified fluorinated alicyclic epoxy resin according to claim 1, wherein the raw material comprises the following components in parts by weight:

wherein the acrylic ester monomer is methyl acrylate and butyl acrylate according to a mass ratio of 30: 10;

the emulsifier is a mixture of sodium dodecyl sulfate and sodium dodecyl benzene sulfonate in a mass ratio of 1: 1;

the initiator is potassium persulfate;

or comprises the following components in parts by weight:

wherein the acrylic ester monomer is methyl acrylate, butyl acrylate and 2-ethylhexyl acrylate according to a mass ratio of 20: 5: 1;

the emulsifier is sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and nonylphenol polyoxyethylene ether in a mass ratio of 2: 2: 1;

the initiator is ammonium persulfate.

10. The preparation method of the modified fluorinated alicyclic epoxy resin according to any one of claims 1 to 9, wherein a mixture of the fluorinated acrylate monomer, the acrylate monomer and the alicyclic epoxy acrylate compound is added dropwise to deionized water and an emulsifier, the temperature is raised to 70 to 80 ℃, then an initiator is added dropwise, the mixture is stirred and reacts for 3 to 5 hours, the temperature is raised to 85 to 90 ℃, and the mixture is stirred and reacts for 1 to 2 hours, so that the modified fluorinated alicyclic epoxy resin is obtained.

Technical Field

The invention relates to a modified fluorinated alicyclic epoxy resin and a preparation method thereof, belonging to the technical field of high polymer materials.

Background

The integration level of integrated circuit devices is increasing, the feature sizes are shrinking, especially the line widths are decreasing to sub-micron sizes, and the correspondingThe signal delay and cross talk between signals have become the bottleneck problem limiting the overall performance of the integrated circuit, and the rc delay is the biggest challenge to the reliability of the metal interconnection line. In the traditional process, aluminum is used as a metal interconnection line and SiO is used₂The resistance-capacitance interconnection delay brought by the interconnection metal dielectric layer is larger than the gate delay of signal transmission. The parasitic capacitance effect between metal wires can be reduced by adopting the low dielectric constant material, the low dielectric constant interconnection dielectric material becomes the basis of the interconnection structure of the ultra-large scale integrated circuit, and the interconnection metal dielectric layer material with lower dielectric constant value is searched to become the development direction of the ultra-large scale integrated circuit process.

The epoxy resin is a resin containing two or more than two epoxy groups in a molecule, and the epoxy resin is widely used as an adhesive, a coating and a resin-based composite material due to good heat resistance, solvent resistance, physical mechanics, electrical insulation performance, good bonding performance with various materials and good chemical stability, and is widely applied to the field of electronic packaging, but the water absorption rate and the dielectric constant of the epoxy resin are not ideal, the dielectric constant value is 3-4, and the common epoxy resin is bisphenol A epoxy resin, so that the epoxy resin is difficult to meet the field of rapid microelectronic packaging due to low UV radiation curing activity.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the prior epoxy resin has the technical problems of high dielectric constant and the like.

In order to solve the technical problem, the invention provides a modified fluorinated alicyclic epoxy resin which is characterized by comprising the following components in parts by weight:

preferably, the acrylate monomer is any one or a mixture of methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, isobornyl acrylate and cyclohexyl methacrylate.

Preferably, the alicyclic epoxy acrylate compound has the formula:

in the formula, R is H or CH₃And n is a natural number of 1 to 6.

Preferably, the emulsifier is any one or a mixture of several of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, alkyl diphenyl oxide disulfonate, ethoxylated ammonium alkylphenol sulfate, nonylphenol polyoxyethylene ether and isotridecyl alcohol polyoxyethylene ether;

preferably, the initiator is ammonium persulfate, potassium persulfate or a mixture of the ammonium persulfate and the potassium persulfate.

Preferably, the fluorinated acrylate monomer comprises the following raw materials in parts by weight:

the preparation method of the fluorinated acrylate monomer comprises the following steps: in N₂Dripping hexafluoroisopropanol into isophorone diisocyanate under the condition of atmosphere and 30-35 ℃, then dripping 1 drop of catalyst, and stirring for reacting for 2 hours after dripping; then adding hydroxyethyl acrylate and supplementing the rest catalyst; adjusting the temperature to 80-85 ℃, and stirring for 2-3 hours to obtain the fluorinated acrylate monomer. The dripping speed of the hexafluoroisopropanol is 0.01-0.05 mL/s.

More preferably, the catalyst is dibutyltin dilaurate.

More preferably, the fluorinated acrylate monomer comprises the following raw materials in parts by weight:

or comprises the following components:

preferably, the raw materials of the epoxy resin comprise the following components in parts by weight:

wherein the acrylic ester monomer is methyl acrylate and butyl acrylate according to a mass ratio of 30: 10;

the emulsifier is a mixture of sodium dodecyl sulfate and sodium dodecyl benzene sulfonate in a mass ratio of 1: 1;

the initiator is potassium persulfate;

or comprises the following components in parts by weight:

wherein the acrylic ester monomer is methyl acrylate, butyl acrylate and 2-ethylhexyl acrylate according to a mass ratio of 20: 5: 1;

the emulsifier is sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and nonylphenol polyoxyethylene ether in a mass ratio of 2: 2: 1;

the initiator is ammonium persulfate.

The invention also provides a preparation method of the modified fluorinated alicyclic epoxy resin, which is characterized by dropwise adding a mixture of fluorinated acrylate monomers, acrylate monomers and alicyclic epoxy acrylate compounds into deionized water and an emulsifier, heating to 70-80 ℃, then dropwise adding an initiator, reacting for 3-5 hours under stirring, heating to 85-90 ℃, and reacting for 1-2 hours under stirring to obtain the modified fluorinated alicyclic epoxy resin.

Preferably, the dropping speed of the mixture of the fluorinated acrylate monomer, the acrylate monomer and the alicyclic epoxy acrylate compound is 0.1-0.5 mL/s.

Preferably, the dropping speed of the initiator is 0.05-0.1 mL/s.

The invention provides fluorinated aliphatic ring structured epoxy resin which has lower dielectric constant, can be UV cured and is easy for large-scale production and a preparation method thereof. The fluorinated alicyclic structure epoxy resin can be used independently, and can also be matched with other resins for use, and the material performance is adjusted according to the process requirements.

Preparing samples of the modified fluorinated alicyclic epoxy resin with the length, width and thickness of 10mm, 10mm and 0.6mm respectively; the detection is carried out by adopting a German Concept80 broadband dielectric impedance spectrometer at the room temperature of 25 ℃, and the dielectric constant of the sample is 2.2-2.5 at 1 GHz.

The modified fluorinated alicyclic epoxy resin has good film forming property, wide damping temperature range and good high and low temperature damping effect, can be used for preparing various damping coatings with long-acting damping effect, and can be widely used for vibration reduction and noise reduction of airplanes, ships, buildings, traffic and various machines.

The fluorinated epoxy resin with the aliphatic ring structure can realize rapid curing under the irradiation of 365nm UV-LED light source. The surface of a glass slide precoated with the modified fluorinated alicyclic structure epoxy resin was coated with the obtained modified fluorinated alicyclic structure epoxy resin, and irradiated with 365nm UV-LED light, and the curing time of the modified fluorinated alicyclic structure epoxy resin of the present invention was detected to be 25 to 40 seconds according to the finger touch method (the surface of the modified fluorinated alicyclic structure epoxy resin cured by finger pressure for a certain period of time is characterized by the shortest time taken for the modified fluorinated alicyclic structure epoxy resin to be completely cured, with no tack as a criterion).

Furthermore, the fluorinated acrylate monomer (fluorinated acrylate monomer) prepared by a new route is adopted before polymerization, the technical route has price advantage, and the price of the fluorinated acrylate monomer prepared by the method is greatly reduced compared with that of the fluorine-containing acrylate sold in the market at present. The modified fluorinated alicyclic epoxy resin of the present invention has a low dielectric constant. The fluorinated alicyclic epoxy resin is mainly characterized in that the prepared fluorinated alicyclic epoxy resin contains a large amount of low-polarity alicyclic structures and has low molar polarizability; the structure of the second aliphatic ring is also a large steric hindrance group, so that the number of polarized molecules in unit volume is reduced, and the dielectric constant of the second aliphatic ring is reduced. And the bond energy of the C-F bond is large, the induced polarizability is lower than that of the C-H bond, and the C-F bond introduced into the polymer can reduce the stacking degree of polymer chains, thereby reducing the dielectric constant of the polymer.

Compared with the prior art, the invention has remarkable technical progress. The preparation method of the fluorinated alicyclic structure epoxy resin has the advantages of short preparation route, mild reaction and no need of pressure reaction equipment, so that the preparation method has the advantages of simple preparation process, convenience in operation and mild reaction conditions, and is suitable for industrial production.

Drawings

FIG. 1 is an infrared spectrum of a modified fluorinated alicyclic epoxy resin obtained in example 1.

Detailed Description

In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

Except for the manufacturers and the types which are specially indicated, other raw materials used in the embodiments of the invention are commercially available, and the specifications are all chemical purity.

The information of the model and the manufacturer of each device used in the invention is as follows:

concept80 wide band dielectric impedance spectrometer, NOVOCONTROL GmbH, germany.

Example 1

The modified fluorinated alicyclic epoxy resin comprises the following components in parts by weight:

wherein the acrylic ester monomer is methyl acrylate and butyl acrylate according to a mass ratio of 30: 10;

the alicyclic epoxy acrylate compound is provided by Jiangsu Tai Er chemical industry Co.Ltd;

the emulsifier is a mixture of sodium dodecyl sulfate and sodium dodecyl benzene sulfonate in a mass ratio of 1: 1;

the initiator is potassium persulfate.

The fluorinated acrylate monomer comprises the following components in parts by weight:

wherein the catalyst is dibutyltin dilaurate.

The preparation method of the modified fluorinated alicyclic epoxy resin comprises the following steps:

1) putting isophorone diisocyanate into a 500mL round-bottom four-mouth flask, controlling the temperature to 30 ℃ under the protection of N2, then dropwise adding hydroxyethyl acrylate into the system at the speed of 0.01 mL/s, and then dropwise adding 1 drop of catalyst. After the completion of the dropwise addition, the reaction was stirred for 2 hours. Dissolving the antioxidant AO-80 in tetrahydrofuran, pouring into a four-neck flask, and adding the rest catalyst. The temperature was adjusted to 80 ℃. Stirring for 2 hours to finally obtain a transparent viscous fluorinated acrylate monomer.

2) Adding deionized water and an emulsifier into a 500mL four-neck flask provided with a stirring paddle, a condenser tube, a dropping funnel and a thermometer, dripping a mixed monomer of the fluorinated acrylate monomer, the alicyclic epoxy acrylate compound and the crosslinking monomer 2 obtained in the step 1) into the four-neck flask at the speed of 0.1mL/s, heating to 60 ℃, adding an initiator into the four-neck flask at the speed of 0.05mL/s, reacting for 3 hours under stirring, heating to 85 ℃, and reacting for 1 hour under stirring to obtain the modified fluorinated alicyclic epoxy resin.

The surface of a glass slide precoated with the modified fluorinated alicyclic structure epoxy resin was coated with the obtained modified fluorinated alicyclic structure epoxy resin, and irradiated with 365nm UV-LED light, and the curing time of the modified fluorinated alicyclic structure epoxy resin of the present invention was detected to be 25s according to the finger touch method (the surface of the modified fluorinated alicyclic structure epoxy resin cured by finger pressure for a certain period of time is characterized by the shortest time taken for the modified fluorinated alicyclic structure epoxy resin to be completely cured, with no tack as a criterion).

Preparing samples of the modified fluorinated alicyclic epoxy resin with the length, width and thickness of 10mm, 10mm and 0.6mm respectively; the detection is carried out by adopting a German Concept80 broadband dielectric impedance spectrometer at the room temperature of 25 ℃, and the dielectric constant is 2.2 at 1 GHz.

This shows that the modified fluorinated alicyclic structure epoxy resin obtained in example 1 has UV curing characteristics and a low dielectric constant.

Example 2

The modified fluorinated alicyclic epoxy resin comprises the following components in parts by weight:

wherein the acrylic ester monomer is methyl acrylate and butyl acrylate according to a mass ratio of 30: 10;

the alicyclic epoxy acrylate compound is provided by Jiangsu Tai Er chemical industry Co.Ltd;

the emulsifier is a mixture of sodium dodecyl sulfate and sodium dodecyl benzene sulfonate in a mass ratio of 1: 1;

the initiator is potassium persulfate.

The fluorinated acrylate monomer comprises the following components in parts by weight:

wherein the catalyst is dibutyltin dilaurate.

The preparation method of the modified fluorinated alicyclic epoxy resin comprises the following steps:

1) putting isophorone diisocyanate into a 500mL round-bottom four-mouth flask, controlling the temperature to 32 ℃ under the protection of N2, then dropwise adding hydroxyethyl acrylate into the system at the speed of 0.03 mL/s, and then dropwise adding 1 drop of catalyst. After the completion of the dropwise addition, the reaction was stirred for 2 hours. Dissolving the antioxidant AO-80 in tetrahydrofuran, pouring into a four-neck flask, and adding the rest catalyst. The temperature was adjusted to 83 ℃. Stirring for 2.5 hours to finally obtain a transparent viscous fluorinated acrylate monomer.

2) Adding deionized water and an emulsifier into a 1000mL four-neck flask provided with a stirring paddle, a condenser tube, a dropping funnel and a thermometer, dripping a mixed monomer of the fluorinated acrylate monomer, the alicyclic epoxy acrylate compound and the crosslinking monomer 2 obtained in the step 1) into the four-neck flask at the speed of 0.3mL/s, heating to 70 ℃, adding an initiator into the four-neck flask at the speed of 0.07mL/s, reacting for 4 hours under stirring, heating to 87 ℃, and reacting for 1.5 hours under stirring to obtain the modified fluorinated alicyclic epoxy resin.

The modified fluorinated alicyclic structure epoxy resin obtained above was coated and irradiated with 365nm UV-LED lamp onto the surface of a glass slide precoated with the modified fluorinated alicyclic structure epoxy resin, and the curing time of the modified fluorinated alicyclic structure epoxy resin of the present invention was examined to be 40s according to the finger touch method (the surface of the modified fluorinated alicyclic structure epoxy resin cured by finger pressure for a certain period of time is characterized by the shortest time taken for the modified fluorinated alicyclic structure epoxy resin to be completely cured, with no tack as a criterion).

Preparing samples of the modified fluorinated alicyclic epoxy resin with the length, width and thickness of 10mm, 10mm and 0.6mm respectively; the detection is carried out by adopting a German Concept80 broadband dielectric impedance spectrometer at the room temperature of 25 ℃, and the dielectric constant is 2.5 at 1 GHz.

It is thus shown that the modified fluorinated alicyclic structure epoxy resin obtained in example 2 has UV curing characteristics and a low dielectric constant.

Example 3

The modified fluorinated alicyclic epoxy resin comprises the following components in parts by weight:

wherein the acrylic ester monomer is methyl acrylate, butyl acrylate and 2-ethylhexyl acrylate according to a mass ratio of 20: 5: 1;

the alicyclic epoxy acrylate compound is provided by Jiangsu Tai Er chemical industry Co.Ltd;

the emulsifier is sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and nonylphenol polyoxyethylene ether in a mass ratio of 2: 2: 1;

the initiator is ammonium persulfate.

The fluorinated acrylate monomer comprises the following components in parts by weight:

wherein the catalyst is dibutyltin dilaurate.

The preparation method of the modified fluorinated alicyclic epoxy resin comprises the following steps:

1) putting isophorone diisocyanate into a 1000mL round-bottom four-mouth flask, controlling the temperature to 35 ℃ under the protection of N2, then dropwise adding hydroxyethyl acrylate into the system at the speed of 0.05mL/s, and then dropwise adding 1 drop of catalyst. After the completion of the dropwise addition, the reaction was stirred for 2 hours. Dissolving the antioxidant AO-80 in tetrahydrofuran, pouring into a four-neck flask, and adding the rest catalyst. The temperature was adjusted to 85 ℃. Stirring for 3 hours to finally obtain the transparent viscous fluorinated acrylate monomer.

2) Adding deionized water and an emulsifier into a 1000mL four-neck flask provided with a stirring paddle, a condenser tube, a dropping funnel and a thermometer, dripping a mixed monomer of the fluorinated acrylate monomer, the alicyclic epoxy acrylate compound and the crosslinking monomer 2 obtained in the step 1) into the four-neck flask at the speed of 0.5mL/s, heating to 75 ℃, adding an initiator into the four-neck flask at the speed of 0.1mL/s, reacting for 5 hours under stirring, heating to 90 ℃, and reacting for 2 hours under stirring to obtain the modified fluorinated alicyclic epoxy resin.

The modified fluorinated alicyclic structure epoxy resin obtained above was coated and irradiated with 365nm UV-LED lamp onto the surface of a glass slide precoated with the modified fluorinated alicyclic structure epoxy resin, and the curing time of the modified fluorinated alicyclic structure epoxy resin of the present invention was examined to be 35s according to the finger touch method (the surface of the modified fluorinated alicyclic structure epoxy resin cured by finger pressure for a certain period of time is characterized by the shortest time taken for the modified fluorinated alicyclic structure epoxy resin to be completely cured, with no tack as a criterion).

Preparing samples of the modified fluorinated alicyclic epoxy resin with the length, width and thickness of 10mm, 10mm and 0.6mm respectively; the detection is carried out by adopting a German Concept80 broadband dielectric impedance spectrometer at the room temperature of 25 ℃, and the dielectric constant is 2.3 at 1 GHz.

It is thus demonstrated that the modified fluorinated alicyclic structure epoxy resin obtained in example 3 has UV curing characteristics and a low dielectric constant.