阅读说明：本技术 聚沙吸隔声板用固化剂体系、聚沙吸隔声板及其制备方法 (Curing agent system for sand-gathering sound absorption and insulation board, sand-gathering sound absorption and insulation board and preparation method thereof ) 是由 张兵 张天畅 邹尚瀚锋 于 2020-06-19 设计创作，主要内容包括：本发明提供一种聚沙吸隔声板用固化剂体系,包含重量比为200∶20～40的A组分和B组分,所述A组分由环氧树脂、环氧稀释剂、颜填料和紫外线吸收剂组成,所述B组分由1,3-二氨基甲基环己烷、异佛尔酮二胺、间苯二甲胺、聚醚胺和脂肪改性胺组成。解决了现有技术中砂质微孔吸隔声材料产品稳固性差,容易变色,存在污染隐患,特别是固化体系较为复杂,影响产品同时兼具吸隔声效果及稳固轻薄的特性。同时,为提高综合机械性能和耐候性,使得粘结体系在微观形成致密的整体,添加了特种颜填料等新材料。如金红石型钛白粉、纳米碳管和石墨烯等材料组合。(The invention provides a curing agent system for a sand gathering sound absorption and insulation board, which comprises a component A and a component B in a weight ratio of 200: 20-40, wherein the component A comprises epoxy resin, an epoxy diluent, pigment fillers and an ultraviolet absorbent, and the component B comprises 1, 3-diaminomethylcyclohexane, isophorone diamine, m-xylylenediamine, polyether amine and fat modified amine. The problem of among the prior art sand micropore inhale sound insulation material product steadiness poor, change colour easily, have the pollution hidden danger, especially solidification system is comparatively complicated, influences the product and has concurrently inhale sound insulation effect and firm frivolous characteristic simultaneously. Meanwhile, in order to improve the comprehensive mechanical property and weather resistance and enable the bonding system to form a compact whole in a microscopic mode, new materials such as special pigments and fillers are added. Such as rutile titanium dioxide, carbon nanotubes, graphene and other materials.)

1. The curing agent system for the sand-gathering sound absorption and insulation board is characterized by comprising a component A and a component B in a weight ratio of 200: 20-40, wherein the component A is composed of epoxy resin, an epoxy diluent, pigment fillers and an ultraviolet absorbent, and the component B is composed of 1, 3-diaminomethylcyclohexane, isophorone diamine, m-xylylenediamine, polyether amine and fat modified amine.

2. The curing agent system for the sand-gathering sound-absorbing and-insulating plate as claimed in claim 1, wherein in the component A, the epoxy resin accounts for 28-40 wt%, the epoxy diluent accounts for 8-24 wt%, the pigment and filler accounts for 50-60 wt%, and the ultraviolet absorber accounts for 0.05-0.3 wt%.

3. The curing agent system for the sand-gathering sound absorption and insulation board according to claim 1, wherein in the component B, the content of 1, 3-diaminomethylcyclohexane is 0 to 90 wt%, the content of isophorone diamine is 0 to 80 wt%, the content of m-xylylenediamine is 0 to 80 wt%, the content of polyether amine is 0 to 70 wt%, and the content of fat-modified amine is 0 to 80 wt%.

4. The hardener system for a sand-gathering sound-absorbing and insulating panel as claimed in claim 1, wherein the epoxy resin is one or more selected from bisphenol a epoxy resin, bisphenol F epoxy resin, alicyclic epoxy resin, brominated epoxy resin, and novolac epoxy resin.

5. The curing agent system for the sand-gathering sound absorption and insulation plate according to claim 4, wherein the bisphenol A type epoxy resin has a viscosity of 7000 to 16000 mPa-s/25 ℃, the bisphenol F type epoxy resin has a viscosity of 2500 to 4500 mPa-s/25 ℃, the cycloaliphatic epoxy resin has a viscosity of 200 to 1000 mPa-s/25 ℃, the brominated epoxy resin has an epoxy equivalent of 300 to 500g/mol, wherein the bromine content is 40 to 60%, the novolac epoxy resin has an epoxy equivalent of 150 to 210g/mol, and the functionality is 2.0 to 4.0.

6. The curing agent system for the sand-based sound absorption and insulation board according to claim 1, wherein the epoxy diluent is one or more selected from 1, 4-butanediol diglycidyl ether, trimethylolpropane triglycidyl ether, polypropylene glycol diglycidyl ether, 1, 2-cyclohexanediol diglycidyl ether, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, 1, 6-hexanediol diglycidyl ether, and neopentyl glycol diglycidyl ether.

7. The curing agent system for the sand-gathering sound-absorbing and-insulating board as claimed in claim 1, wherein the pigment and filler is selected from one or more of rutile type titanium dioxide, special pigment, carbon nanotube and graphene.

8. The curing agent system for the sand-gathering sound absorption and insulation board as claimed in claim 1, wherein the ultraviolet absorber is selected from one or more of 2- (2 ' -hydroxy-3 ', 5 ' -di-tert-phenyl) -5-chlorobenzotriazole and hexamethylphosphoric triamide.

9. A sand-gathering sound-absorbing and insulating panel obtained by curing the curing agent system according to any one of claims 1 to 8.

10. The preparation method of the sand-gathering sound absorption and insulation board according to claim 9, wherein sand grains and a curing agent are mixed and stirred according to a system with a weight ratio of 100: 5-10, the mixture is laid in a mold, after primary distribution, reinforcement is laid, secondary distribution is carried out, and then mechanical vibration and compression molding is carried out.

Technical Field

The invention belongs to the technical field of sound absorption and insulation materials, and particularly relates to a curing agent system for a sand-gathering sound absorption and insulation plate, the sand-gathering sound absorption and insulation plate and a preparation method thereof.

Background

With the development of urban construction, the requirements on sound noise reduction and sound absorption and insulation effects are higher and higher. The currently used sound absorption and insulation materials include: metals, concrete, glass fiber reinforced plastics, fibers, and porous ceramics. The metal sound absorption and insulation material has good absorption capacity for middle and low frequency noise, but is easy to rust, strict in process requirement and high in production cost. The concrete sound absorption and insulation material has low cost, is firm and durable, but has poor sound absorption and insulation effect. The glass fiber reinforced plastic sound absorption and insulation material has corrosion resistance and stable chemical performance, but has poor weather resistance and poor ultraviolet resistance. The fiber sound absorption and insulation material has good sound absorption capacity in a high-frequency section, but has poor fireproof, moisture-proof and corrosion-proof capacities. The porous ceramic sound absorption and insulation material is corrosion-resistant, has good sound absorption performance on sound of 200-1 kHz, and has poor sound absorption capacity on a high-frequency band. The sound absorption material has many limitations in application range due to its own defects.

Therefore, a sound absorption and insulation material taking natural sand as a main raw material is advocated in the industry. For example, in the sand gathering and sound absorbing material in the prior art, natural sand is selected, and a layer of melting and re-curing reaction is generated between outer layers of sand grains by uniformly and extremely thinly applying a solvent to the surfaces of all the sand grains, so that the sand grains are gathered together like being welded. Because the microscopic shape of each grit is irregular and unique, when packed together, the grit naturally forms a large number of irregular interconnected microscopic pores. Because the interior of the sound absorption device is provided with the micro pores which are communicated with each other and have different shapes, when sound is emitted out of the surface of the sound absorption device, sound waves can penetrate into the interior of the sound absorption device and spread in the pores, and sound energy is gradually converted into heat energy to be consumed due to the viscosity and friction resistance effect generated by air movement in the spreading process, so that the sound absorption effect is generated. The sand-gathering sound-absorbing and insulating material has the advantages of good sound-absorbing and insulating effect, high strength, fire resistance, moisture resistance, frost resistance and aging resistance.

The Chinese patent application No. 2014103757812, entitled microporous rock sound absorption and insulation board and a preparation method thereof, discloses a microporous rock sound absorption and insulation board, the board body of which is composed of rock particles and polyester silicon adhesive according to the weight ratio of 1: (0.01-0.3). Wherein the polyester silicon adhesive consists of 2.5 to 3.5 percent of methyl silane, 25 to 27 percent of sodium silicate, 3.5 to 4.5 percent of calcium silicate, 7.5 to 8.5 percent of fumed silica, 0.003 to 0.005 percent of dibutyl tin dilaurate, 5.5 to 6.5 percent of triethanolamine, 8.5 to 9.5 percent of epoxy resin, 5.5 to 6.5 percent of feldspar powder, 3.5 to 4.5 percent of glyceride, 2.5 to 3.5 percent of dimethylformamide and the balance of silicon tripolyphosphate.

In addition, the Chinese patent application No. 2018104857784, which is named as a sand-gathering sound absorption device and a preparation method thereof, discloses that the sand-gathering sound absorption device is formed by molding a sand-gathering composition; the sand-gathering composition comprises a base material, a binder, a curing agent and a lubricant; wherein, the addition amount of the binder is 1-5%, preferably 2-4%, the addition amount of the curing agent is 0.05-0.5%, preferably 0.1-0.4%, and the addition amount of the lubricant is 0.2-0.5%, preferably 0.3-0.4%, based on the mass percentage of the base material being 100%.

In addition, chinese patent application No. 2013102776667, entitled sandstone microbead environmental-friendly sound-absorbing ceiling, discloses that the ceiling is composed of 4 parts, round sand grains or hollow glass microbeads or closed-cell perlite and adhesive are mixed and pressed into a base layer, a grid cloth or glass fiber mat framework layer is arranged on the base layer, a hollow glass microbead layer is arranged on the framework layer, a decorative effect layer is arranged on the hollow glass microbead layer, the first three layers are pressed in a mold, after moisture is evaporated and the adhesive is cured, natural pores of the plate can appear to play a sound-absorbing role, and then the natural white sand grains are mixed with the adhesive or the decorative effect layer is treated by coating or paint.

However, the sand-gathering sound-absorbing and sound-insulating material in the prior art still has the problems of low product stability, poor impact resistance and breaking strength and long service life to be improved; and the color is easy to change, and potential pollution hidden troubles of inorganic matter volatilization exist.

Disclosure of Invention

Therefore, the invention aims to provide a curing agent system for a sand-gathering sound absorption and insulation board, the sand-gathering sound absorption and insulation board and a preparation method thereof, and solves the problems that in the prior art, sand-gathering sound absorption and insulation materials are poor in product stability, easy to discolor and prone to pollution hidden dangers, especially the curing system is complex, and the product is affected and has the sound absorption and insulation effect and the characteristics of stability, lightness and thinness. Meanwhile, new materials such as special pigments and fillers are added, so that the comprehensive mechanical property and weather resistance of the product are improved, and the bonding system forms a compact whole in a microscopic mode.

In order to solve the technical problems, the invention provides a curing agent system for a sand-gathering sound absorption and insulation board, which comprises a component A and a component B in a weight ratio of 200: 20-40, wherein the component A comprises epoxy resin, an epoxy diluent, pigment fillers and an ultraviolet absorbent, and the component B comprises 1, 3-diaminomethylcyclohexane, isophorone diamine, m-xylylenediamine, polyether amine and fat modified amine.

Preferably, in the component A, 28-40 wt% of epoxy resin, 8-24 wt% of epoxy diluent, 50-60 wt% of pigment and filler and 0.05-0.3 wt% of ultraviolet absorber are used.

Preferably, in the component B, 0-90 wt% of 1, 3-diaminomethylcyclohexane, 0-80 wt% of isophorone diamine, 0-80 wt% of m-xylylenediamine, 0-70 wt% of polyether amine and 0-80 wt% of fat modified amine are contained.

Preferably, the epoxy resin is selected from one or more of bisphenol A epoxy resin, bisphenol F epoxy resin, alicyclic epoxy resin, brominated epoxy resin and novolac epoxy resin.

Preferably, the viscosity of the bisphenol A type epoxy resin is 7000-16000 mPa & s/25 ℃, the viscosity of the bisphenol F type epoxy resin is 2500-4500 mPa & s/25 ℃, the viscosity of the alicyclic epoxy resin is 200-1000 mPa & s/25 ℃, the epoxy equivalent of the brominated epoxy resin is 300-500 g/mol, wherein the bromine content is 40-60%, the epoxy equivalent of the novolac epoxy resin is 150-210 g/mol, and the functionality is 2.0-4.0.

Preferably, the epoxy diluent is selected from one or more of 1, 4-butanediol diglycidyl ether, trimethylolpropane triglycidyl ether, polypropylene glycol diglycidyl ether, 1, 2-cyclohexanediol diglycidyl ether, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, 1, 6-hexanediol diglycidyl ether, and neopentyl glycol diglycidyl ether.

Preferably, the pigment and filler is selected from one or more of rutile titanium dioxide, special pigment, carbon nanotube and graphene.

Preferably, the ultraviolet absorbent is selected from one or more of 2- (2 ' -hydroxy-3 ', 5 ' -di-tert-phenyl) -5-chlorobenzotriazole and hexamethylphosphoric triamide.

The invention also provides a sand-gathering sound absorption and insulation board which is prepared by curing the curing agent system.

The invention also provides a preparation method of the sand-gathering sound absorption and insulation board, which comprises the steps of mixing and stirring sand grains and a curing agent according to a system with the weight ratio of 100: 5-10, paving the mixture in a mold, paving reinforcing bars after primary distribution, then performing secondary distribution, and then performing mechanical vibration and pressure molding.

Has the advantages that:

the curing agent system for the sand-gathering sound absorption and insulation board comprises a component A and a component B, wherein the component A and the component B are in a weight ratio of 200: 20-40, the component A is composed of epoxy resin, an epoxy diluent, a pigment filler and an ultraviolet absorbent, and the component B is composed of 1, 3-diaminomethylcyclohexane, isophorone diamine, m-xylylenediamine, polyether amine and fat modified amine. The adhesive is suitable for mutual adhesion of various inorganic materials such as sand grains and the like, realizes strong adhesion and curing effects of a curing agent system, can improve the wettability and the adhesion of various inorganic sand through the component A, and improves the cross-linking density and the dimensional stability after heating of a product, thereby improving the impact resistance and the breaking strength of a sand-gathering sound-absorbing material product, particularly the addition of a pigment and a filler, improving the dispersion effect of the curing system, increasing the compactness of a cured product, improving the mechanical strength of the cured product, and increasing the yellowing resistance of the system.

The sand-gathering sound absorption and insulation board realizes high strength, lightness, thinness and high strength three-dimensional. The characteristics can be fully utilized, so that the nonmetal inorganic material has metal processing performance, namely, the large-scale complex noise reduction matrix type equipment which is suitable for large-temperature difference and large-flow fluid can be manufactured by a complex die processing and forming cavity, thin wall, complex shape and mechanical installation and connection mode.

The application range is expanded through the innovative upgrading of the material. The condition that the common screen-type sound barrier is replaced by the full-nonmetal sound barrier for the railway and the highway is completely met. Thoroughly avoid the risk and the life problem of the corrosion failure of metal stand and bolt and metal structure spare etc.. The method can be used for manufacturing and installing super-long tunnels and mine escape passages in an attempt to expand. The dynamic machine set can be used for sound absorption and insulation treatment in a high-corrosion environment, and conditions are created for application in pharmaceutical, chemical, papermaking, metallurgy and even military equipment occasions.

In addition, compared with the existing product, the sand-gathering sound absorption and insulation board has better weather resistance and fireproof safety performance. The curing agent system becomes inorganic-like material after being stably cured at the glass transition temperature, has the weather resistance and firmness of inorganic nonmetallic materials, does not volatilize organic matters, and has long service life.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description will be given with reference to the embodiments.

The reagents used in this specification are commercially available products unless otherwise specified.