Thermosetting material for preparing high-wave-transmission radome and radome preparation method

文档序号：674077 发布日期：2021-04-30 浏览：24次中文

阅读说明：本技术 一种制备高透波天线罩的热固性材料及天线罩制备方法 (Thermosetting material for preparing high-wave-transmission radome and radome preparation method ) 是由胡革于 2021-01-14 设计创作，主要内容包括：本发明提供了一种制备高透波天线罩的热固性材料及天线罩制备方法,属于高分子材料领域。该热固性材料是由如下重量配比的原料制备而成：含环烯烃类化合物的混合物95～99.999份,催化剂0.001～5份；所述含环烯烃类化合物的混合物由如下重量配比的组分组成：环烯烃类化合物80～100份,无机填料或有机添加剂0～20份；所述催化剂由金属卡宾催化剂、钨系催化剂、钼系催化剂、锰系催化剂中的一种或多种组成。该热固性材料制备的天线罩不吸水,电性能稳定；介电常数和介电损耗显著低于现有技术,可有效减少天线波的损耗。该天线罩密度低,降低了其安装难度。本发明制备的天线罩具有优异的性能,可作为5G天线罩,具有良好的应用前景。(The invention provides a thermosetting material for preparing a high-wave-transmission radome and a radome preparation method, and belongs to the field of high polymer materials. The thermosetting material is prepared from the following raw materials in parts by weight: 95-99.999 parts of a mixture containing a cycloolefin compound, and 0.001-5 parts of a catalyst; the mixture containing the cycloolefin compounds comprises the following components in parts by weight: 80-100 parts of cycloolefin compounds and 0-20 parts of inorganic fillers or organic additives; the catalyst is composed of one or more of a metal carbene catalyst, a tungsten catalyst, a molybdenum catalyst and a manganese catalyst. The antenna housing prepared from the thermosetting material does not absorb water, and has stable electrical property; the dielectric constant and dielectric loss are obviously lower than those of the prior art, and the loss of antenna waves can be effectively reduced. The antenna housing is low in density, and the installation difficulty of the antenna housing is reduced. The antenna housing prepared by the invention has excellent performance, can be used as a 5G antenna housing, and has good application prospect.)

1. A thermoset material, characterized by: the composition is prepared from the following raw materials in parts by weight: 95-99.999 parts of a mixture containing a cycloolefin compound, and 0.001-5 parts of a catalyst;

the mixture containing the cycloolefin compounds comprises the following components in parts by weight: 80-100 parts of cycloolefin compounds and 0-20 parts of inorganic fillers or organic additives;

the catalyst is composed of one or more of a metal carbene catalyst, a tungsten catalyst, a molybdenum catalyst and a manganese catalyst.

2. The thermoset material of claim 1, wherein: the composition is prepared from the following raw materials in parts by weight: 100 parts of a mixture containing cycloolefin compounds and 0.02 part of a catalyst;

preferably, the mixture containing the cyclic olefin compounds consists of the following components in parts by weight: 84 parts of cycloolefin compounds, 10 parts of inorganic fillers or organic additives;

or the mixture containing the cyclic olefin compounds is all cyclic olefin compounds.

3. The thermosetting material according to claim 1 or 2, characterized in that: the cyclic olefin compound is one or a composition of more of dicyclopentadiene, cyclopentadiene trimer, cyclopentadiene tetramer and norbornene; the content of dicyclopentadiene in the cycloolefin compound is 60-100%;

preferably, the cyclic olefin compound is dicyclopentadiene;

or the cyclic olefin compound consists of dicyclopentadiene and norbornene; the mass ratio of dicyclopentadiene to norbornene is (10-30): (1-5);

more preferably, the mass ratio of dicyclopentadiene to norbornene is 20: 1; and/or said dicyclopentadiene and norbornene contain one or two functional groups; the functional groups are methyl, methoxy, hydroxyl and carboxylic acid groups.

4. The thermosetting material according to claim 1 or 2, characterized in that: the metal carbene catalyst is a VIII group transition metal complex;

preferably, the metal carbene catalyst is a Grubbs catalyst having the structure:

wherein M is a group VIII transition metal;

L¹、L²、L³is an independently selected electron donating group;

n is 0 or 1;

m is 0, 1 or 2;

k is 0 or 1;

X¹and X²Are independently selected anionic ligands;

R¹and R²Are respectively selected from H atom, hydrocarbon group and heteroatom-containing hydrocarbon group;

more preferably, M is ruthenium metal and the metal carbene catalyst is a ruthenium metal carbene catalyst;

further preferably, the structural formula of the ruthenium metal carbene catalyst is shown in the specification

5. The thermosetting material according to claim 1 or 2, characterized in that:

the inorganic filler is one or more of alumina, magnesia, boron nitride, silica glass beads and silica hollow glass beads;

the organic additive is one or more of polyphenyl ether, polystyrene, nylon, polycarbonate, a styrene-butadiene-styrene block copolymer, acrylonitrile-butadiene-styrene plastic, a styrene-ethylene-butylene-styrene block copolymer, a light stabilizer and an antioxidant;

preferably, the light stabilizer is one or more of bis (1,2,2,6, 6-pentamethylpiperidinol) sebacate, succinic acid, a polymer of 4-hydroxy-2, 2,6, 6-tetramethyl-1-piperidineethanol, 3- [3- (2-H-benzotriazol-2-yl) -4-hydroxy-5-tert-butylphenyl ] -propionic acid-polyethylene glycol ester, bis (1,2,2,6, 6-pentamethyl-4-piperidine) sebacate and 1-methyl-8- (1,2,2,6, 6-pentamethyl-4-piperidine) sebacate;

the antioxidant is one or more of antioxidant TPP, antioxidant 164, antioxidant 1010, antioxidant BHT and antioxidant CA.

6. A process for preparing a thermoset according to any one of claims 1 to 5, characterized in that: it comprises the following steps:

mixing a mixture containing a cycloolefin compound with a catalyst, and curing and forming to obtain the catalyst;

preferably, the curing molding temperature is 60-100 ℃, and the curing time is 2-5 minutes;

and/or, the curing molding is injection molding into a mold for curing molding;

more preferably, the method of injection into the mold is a reaction injection molding, resin transfer molding compound molding, vacuum assisted resin transfer plastic molding, continuous extrusion and pultrusion process.

7. Use of a thermosetting material according to any of claims 1 to 5 for the preparation of a radome; preferably, the radome is a high wave-transparent radome.

8. A high wave-transparent antenna housing is characterized in that: the composition is prepared from the following raw materials in parts by weight:

90-100 parts of the thermosetting material as claimed in any one of claims 1-5, 0-10 parts of an anti-aging coating;

preferably, the anti-aging coating is one or a mixture of more of fluorocarbon paint, polysiloxane finish paint, acrylic polyurethane finish paint, acrylic paint and alkyd paint;

more preferably, the anti-aging coating is a polysiloxane topcoat.

9. A method for preparing the high wave-transparent radome of claim 8, wherein: it comprises the following steps:

spraying an anti-aging coating on the surface of the thermosetting material, and drying and curing to obtain the anti-aging coating;

preferably, the thickness of the anti-aging coating on the surface of the thermosetting material is 1 μm;

the drying and curing conditions are that the mixture is placed at normal temperature for 3-6 hours.

10. Use of the thermosetting material according to any one of claims 1 to 5 or the high wave-transparent radome according to claim 8 for the preparation of a 5G radome.

Technical Field

The invention belongs to the field of high polymer materials, and particularly relates to a thermosetting material for preparing a high-wave-transmission radome and a radome preparation method.

Background

The antenna housing has the functions of protecting an antenna system from the influence of external environments such as wind, snow, sunlight, organisms and the like, prolonging the service life of the antenna and ensuring the permeability of electromagnetic waves. The dielectric property of the antenna housing material can directly influence the performance of the antenna while the antenna housing protects the antenna system. Therefore, the material for preparing the antenna housing can meet the requirements of dielectric property, mechanical property, weather resistance, manufacturability and the like. The absorption and reflection effects of the material on electromagnetic waves can reduce the transmission efficiency of signals, so that the antenna housing needs to be made of a material with low dielectric constant and low dielectric loss, 5G millimeter waves are easy to lose, the dielectric property of the material is required to be higher, and the material needs to have lower dielectric constant and dielectric loss. Meanwhile, in order to save installation time and cost, the antenna housing needs to meet the requirement of light weight and needs to be prepared by using light-weight materials.

At present, in order to keep the low dielectric and low loss of the antenna housing and simultaneously keep higher mechanical strength and lighter weight, the antenna housing material is prepared by methods of polypropylene (PP), glass fiber (glass fiber), modified PC and the like. But the density of PP after fiber addition is improved to 1.15g/mm³About, the density of PC reaches 1.2g/mm³The density is large, and the processing and the installation are inconvenient; meanwhile, at 10GHZ, the dielectric constant of the PP or PC material doped with 30-40% of glass fiber in weight ratio is larger than 2.6, the dielectric loss reaches 0.0035-0.008, and although the weight of the antenna housing is reduced by 30-40% compared with that of a glass fiber reinforced plastic antenna housing, the antenna housing needs to be further reduced in dielectric loss and dielectric constant for the design freedom degree of the internal circuit of the base station and the reduction of power consumption and the number of stations.

Disclosure of Invention

The invention aims to provide a thermosetting material for preparing a high-wave-transmission radome and a radome preparation method.

The invention provides a thermosetting material, which is prepared from the following raw materials in parts by weight: 95-99.999 parts of a mixture containing a cycloolefin compound, and 0.001-5 parts of a catalyst;

the mixture containing the cycloolefin compounds comprises the following components in parts by weight: 80-100 parts of cycloolefin compounds and 0-20 parts of inorganic fillers or organic additives;

the catalyst is composed of one or more of a metal carbene catalyst, a tungsten catalyst, a molybdenum catalyst and a manganese catalyst.

Further, the thermosetting material is prepared from the following raw materials in parts by weight: 100 parts of a mixture containing cycloolefin compounds and 0.02 part of a catalyst;

or the mixture containing the cyclic olefin compounds is all cyclic olefin compounds.

Further, the cyclic olefin compound is one or a composition of more of dicyclopentadiene, cyclopentadiene trimer, cyclopentadiene tetramer and norbornene; the content of dicyclopentadiene in the cycloolefin compound is 60-100%;

preferably, the cyclic olefin compound is dicyclopentadiene;

or the cyclic olefin compound consists of dicyclopentadiene and norbornene; the mass ratio of dicyclopentadiene to norbornene is (10-30): (1-5);

Further, the metal carbene catalyst is a group VIII transition metal complex;

preferably, the metal carbene catalyst is a Grubbs catalyst having the structure:

wherein M is a group VIII transition metal;

L¹、L²、L³is an independently selected electron donating group;

n is 0 or 1;

m is 0, 1 or 2;

k is 0 or 1;

X¹and X²Are independently selected anionic ligands;

R¹and R²Are respectively selected from H atom, hydrocarbon group and heteroatom-containing hydrocarbon group;

more preferably, M is ruthenium metal and the metal carbene catalyst is a ruthenium metal carbene catalyst;

further preferably, the structural formula of the ruthenium metal carbene catalyst is shown in the specification

Further, the air conditioner is provided with a fan,

the inorganic filler is one or more of alumina, magnesia, boron nitride, silica glass beads and silica hollow glass beads;

the antioxidant is one or more of antioxidant TPP, antioxidant 164, antioxidant 1010, antioxidant BHT and antioxidant CA.

The invention also provides a method for preparing the thermosetting material, which comprises the following steps:

mixing a mixture containing a cycloolefin compound with a catalyst, and curing and forming to obtain the catalyst;

preferably, the curing molding temperature is 60-100 ℃, and the curing time is 2-5 minutes;

and/or, the curing molding is injection molding into a mold for curing molding;

The invention also provides the application of the thermosetting material in the preparation of the antenna housing; preferably, the radome is a high wave-transparent radome.

The invention also provides a high-wave-transmission radome which is prepared from the following raw materials in parts by weight:

90-100 parts of the thermosetting material and 0-10 parts of an anti-aging coating;

preferably, the anti-aging coating is one or a mixture of more of fluorocarbon paint, polysiloxane finish paint, acrylic polyurethane finish paint, acrylic paint and alkyd paint;

more preferably, the anti-aging coating is a polysiloxane topcoat.

The invention also provides a method for preparing the high-wave-transmission radome, which comprises the following steps:

spraying an anti-aging coating on the surface of the thermosetting material, and drying and curing to obtain the anti-aging coating;

preferably, the thickness of the anti-aging coating on the surface of the thermosetting material is 1 μm;

the drying and curing conditions are that the mixture is placed at normal temperature for 3-6 hours.

The invention also provides application of the thermosetting material or the high-wave-transmission radome in preparation of a 5G radome.

The normal temperature in the invention means 25 +/-5 ℃.

The high-wave-transmission radome prepared by the thermosetting material does not absorb water, and the electrical property of the radome is stable. The dielectric constant and the dielectric loss of the antenna housing are effectively reduced, the dielectric constant and the dielectric loss are obviously lower than those of the antenna housing in the prior art, the loss of antenna waves can be effectively reduced while an antenna system is protected, and the antenna housing is more suitable for the 5G technology. In addition, the density of the antenna housing is remarkably reduced, is lower than that of the existing antenna housing, can effectively reduce weight, and reduces the installation difficulty of the antenna housing. Meanwhile, the high-wave-transmission radome can be produced discontinuously and continuously, so that the yield of products is increased. The high-wave-transmission radome prepared by the thermosetting material has excellent performance, can be used as a 5G radome, and has good application prospect.

Obviously, many modifications, substitutions, and variations are possible in light of the above teachings of the invention, without departing from the basic technical spirit of the invention, as defined by the following claims.

The present invention will be described in further detail with reference to the following examples. This should not be understood as limiting the scope of the above-described subject matter of the present invention to the following examples. All the technologies realized based on the above contents of the present invention belong to the scope of the present invention.

Detailed Description

The raw materials and equipment used in the embodiment of the present invention are known products and obtained by purchasing commercially available products.

Example 1 preparation of a high wave-transparent radome of the invention

Dicyclopentadiene (D)And ruthenium catalyst according to mass ratio of 10000:2 to obtain a blend. The blend is injected into a mould through reaction injection molding equipment (RIM equipment), the temperature of the mould is 60 ℃, the curing time is 2 minutes, and the thermosetting material is obtained after the molding, namely the high-wave-transmission radome (product I) of the invention, the density of the radome is 1.05g/mm³。