阅读说明：本技术 一种天线反射面复制用常温固化树脂体系及其制备方法 (Normal-temperature curing resin system for copying antenna reflecting surface and preparation method thereof ) 是由 徐宏涛 郝旭峰 鞠博文 张尉博 王晓蕾 戴晶滨 李钱福 吴泽州 梁燕民 田杰 于 2020-06-30 设计创作，主要内容包括：本发明公开了一种天线反射面复制用常温固化树脂体系及其制备方法,所述常温固化树脂体系包括如下重量份数的各组分：A：酚醛型环氧树脂90～110份、脂环族环氧树脂30～40份；B：三乙烯四胺4～6份、脂环胺固化剂30～40份。本发明获得的环氧树脂体系可用于天线反射面常温复制成型工艺,获取高精度天线反射面板。(The invention discloses a normal-temperature curing resin system for copying an antenna reflecting surface and a preparation method thereof, wherein the normal-temperature curing resin system comprises the following components in parts by weight: a: 90-110 parts of phenolic epoxy resin and 30-40 parts of alicyclic epoxy resin; b: 4-6 parts of triethylene tetramine and 30-40 parts of alicyclic amine curing agent. The epoxy resin system obtained by the invention can be used for a normal-temperature replication molding process of the antenna reflecting surface to obtain the high-precision antenna reflecting panel.)

1. A normal temperature curing resin system for copying an antenna reflecting surface is characterized by comprising the following components in parts by weight:

90-110 parts of phenolic epoxy resin;

30-40 parts of alicyclic epoxy resin;

34-46 parts of a curing agent.

2. The normal temperature curing resin system for antenna reflecting surface replication of claim 1, characterized by comprising the following components in parts by weight:

100 parts of phenolic epoxy resin;

35 parts of alicyclic epoxy resin;

40 parts of curing agent.

3. A room temperature curing resin system for antenna reflector replication as claimed in claim 1 or 2, wherein the novolac type epoxy resin is F-44 or F-51 epoxy resin.

4. The ambient-temperature-curable resin system for antenna reflector replication according to claim 1 or 2, wherein the viscosity of the alicyclic epoxy resin at 25 ℃ is not more than 400 mpa.s; the alicyclic epoxy resin is 3,4 epoxy group cyclohexyl formic acid-3^’，4^’Epoxycyclohexylmethyl ester, vinylcyclohexene diepoxide, bis (2, 3-epoxycyclopentyl) ether.

5. The normal-temperature curing resin system for antenna reflecting surface replication as claimed in claim 1, wherein the curing agent comprises the following components in a weight ratio of 4-6: 30-40 parts of triethylene tetramine and alicyclic amine curing agent.

6. The normal temperature curing resin system for antenna reflection surface replication of claim 5, wherein the curing agent comprises triethylene tetramine and alicyclic amine in a weight ratio of 5: 35.

7. the ambient curing resin system for antenna reflection surface replication according to claim 5 or 6, wherein the viscosity of the alicyclic amine curing agent at 25 ℃ is 100mpa.s or less; the alicyclic amine curing agent is menthane diamine, isophorone diamine and N-aminoethyl piperazine.

8. A method for preparing a room temperature curing resin system for antenna reflection surface replication according to claim 1, comprising the steps of:

s1, weighing the raw materials according to the weight parts of the components in the claim 1;

s2, mixing the novolac epoxy resin and the alicyclic epoxy resin, and stirring to obtain a component A;

s3, adding triethylene tetramine into the alicyclic amine curing agent, and stirring until the mixture is uniformly mixed to form a component B;

and S4, mixing the component A and the component B to form the normal temperature curing resin system for copying the antenna reflecting surface.

9. The method for preparing a normal temperature curing resin system for antenna reflection surface replication according to claim 8, wherein in step S2, the heating temperature is 40 ℃ to 50 ℃; the stirring speed is 2000-4000 revolutions per minute, and the stirring time is 10-20 min;

in step S3, the stirring speed is 2000-4000 rpm, and the stirring time is 10-15 min.

10. Use of an ambient curing resin system according to claim 1 for replication of a reflecting surface of an antenna.

Technical Field

The invention belongs to the technical field of high polymer materials, particularly relates to a normal-temperature curing resin system, and particularly relates to a normal-temperature curing resin system for copying an antenna reflecting surface and a preparation method thereof.

Background

The resin-based composite material has the characteristics of small density, large specific stiffness, high specific strength, small thermal expansion coefficient (approaching zero through design) and the like, and becomes the most ideal material for preparing the antenna reflecting surface with high precision and high stability. The antenna reflecting surface replication process is mainly characterized in that a thin medium layer is injected between a warped antenna reflecting surface and a mold to replicate the precision of the mold, and finally, a high-precision antenna reflecting surface which is basically consistent with the precision of the mold is obtained.

Epoxy resin is the most ideal dielectric material for the antenna reflecting surface replication process due to good adhesion, heat resistance, chemical resistance and mechanical properties, but the existing normal-temperature cured epoxy resin system has short operation time, and the high-temperature cured epoxy resin system cannot be cured at normal temperature, so that a resin system which can be cured at normal temperature and has long operation time is urgently needed.

In the existing normal temperature curing epoxy resin system, for example, patent document CN107556954A discloses an epoxy structural adhesive for aramid fiber honeycomb composite material, which comprises the following components: the mass ratio is 1: 1.5-3: 2-5 of matrix epoxy resin, heat-resistant epoxy resin and rubber toughening agent. The epoxy structural adhesive prepared by the method has high bonding strength and high temperature resistance after being cured at normal temperature, and the preparation method is simple to operate, so that the bonding material can be cured at normal temperature and used at high temperature, and the peel strength of the bonding material is enhanced. However, the digital normal-temperature use time is short, about 30min, and the normal-temperature copying requirement of the antenna reflecting surface cannot be met (5 h for vacuum defoaming, 1h for operation, and 6h for supply and demand).

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a normal-temperature curing resin system for copying an antenna reflecting surface and a preparation method thereof.

The purpose of the invention is realized by the following technical scheme:

the invention provides a normal-temperature curing resin system for copying an antenna reflecting surface, which comprises the following components in parts by weight:

90-110 parts of phenolic epoxy resin;

30-40 parts of alicyclic epoxy resin;

34-46 parts of a curing agent.

Preferably, the normal temperature curing resin system for antenna reflecting surface replication comprises the following components in parts by weight:

100 parts of phenolic epoxy resin;

35 parts of alicyclic epoxy resin;

40 parts of curing agent.

Preferably, the novolac type epoxy resin is F-44 or F-51 epoxy resin.

Preferably, the viscosity of the alicyclic epoxy resin at 25 ℃ is less than or equal to 400 mPa.s; the alicyclic epoxy resin is 3, 4-epoxy cyclohexyl formic acid-3 ', 4' -epoxy cyclohexyl methyl ester, vinyl cyclohexene diepoxide and bis (2, 3-epoxy cyclopentyl) ether.

Preferably, the curing agent comprises the following components in a weight ratio of 4-6: 30-40 parts of triethylene tetramine and alicyclic amine curing agent.

Preferably, in the curing agent, the weight ratio of triethylene tetramine to alicyclic amine curing agent is 5: 35.

preferably, the viscosity of the alicyclic amine curing agent at 25 ℃ is less than or equal to 100 mPa.s; the alicyclic amine curing agent is menthane diamine, isophorone diamine and N-aminoethyl piperazine.

The invention also provides a preparation method of the normal-temperature curing resin system for copying the antenna reflecting surface, which comprises the following steps:

s1, weighing the raw materials according to the weight parts of the components in the claim 1;

s2, mixing the novolac epoxy resin and the alicyclic epoxy resin, and stirring to obtain a component A;

s3, adding triethylene tetramine into the alicyclic amine curing agent, and stirring until the mixture is uniformly mixed to form a component B;

and S4, mixing the component A and the component B to form the normal temperature curing resin system for copying the antenna reflecting surface.

Preferably, in step S2, the heating temperature is 40 ℃ to 50 ℃; the stirring speed is 2000-4000 revolutions per minute, and the stirring time is 10-20 min;

in step S3, the stirring speed is 2000-4000 rpm, and the stirring time is 10-15 min.

The invention also provides application of the normal-temperature curing resin system in antenna reflecting surface replication.

Compared with the prior art, the invention has the following beneficial effects:

(1) according to the invention, through compounding of the phenolic epoxy resin and the alicyclic epoxy resin, the viscosity of the resin system at normal temperature can be reduced, so that normal-temperature operation is achieved, and the normal-temperature service time of the resin system is prolonged; and by adding two specific curing agents, the resin system can be cured at normal temperature for a long time, and the requirements of a normal-temperature replication process are met.

(2) The epoxy resin system obtained by the invention can be used for more than 12 hours at normal temperature;

(3) the resin system prepared by the invention can reach the use temperature of more than 120 ℃ after certain post-curing treatment.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.