阅读说明：本技术 一种气凝胶毡复合材料的连续生产工艺及应用 (Continuous production process and application of aerogel felt composite material ) 是由 佟峰 卢江 张建立 刘兴华 于 2019-11-26 设计创作，主要内容包括：本发明公开了一种气凝胶毡复合材料的生产工艺及应用,其制备方法为：(1)取原料：溶胶原料、纤维基材,连续混合进行溶胶复合；(2)溶胶复合体在定量的碱液作为催化剂作用下,连续混合形成固化为凝胶；(3)将凝胶再进行干燥,形成气凝胶毡；(4)将干燥的气凝胶毡、热熔胶、复合材料和辅料连续送入热熔涂布机进行复合；(5)将热涂后的气凝胶复合材料进行连续定型加工和包装,即完成制作。本发明增强了气凝胶粉在复合材料上的黏着力,提升气凝胶毡产品品质；通过多种材料复合,在原有的优良的隔热隔音基础上,进一步提升综合力学性能,可广泛应用于建筑装潢材料、热力管网材料、新能源汽车和家电领域。(The invention discloses a production process and application of an aerogel felt composite material, wherein the preparation method comprises the following steps: (1) taking raw materials: continuously mixing sol raw materials and fiber base materials for sol compounding; (2) under the action of quantitative alkali liquor as a catalyst, continuously mixing the sol complex to form gel through curing; (3) drying the gel again to form an aerogel felt; (4) continuously feeding the dried aerogel felt, the hot melt adhesive, the composite material and the auxiliary material into a hot melt coating machine for compounding; (5) and (4) carrying out continuous shaping processing and packaging on the aerogel composite material subjected to hot coating, thus finishing the manufacture. The invention enhances the adhesive force of the aerogel powder on the composite material and improves the quality of aerogel felt products; through compounding of multiple materials, the comprehensive mechanical property is further improved on the basis of the original excellent heat insulation and sound insulation, and the composite material can be widely applied to the fields of building decoration materials, heat pipe network materials, new energy automobiles and household appliances.)

1. A continuous production process of aerogel felt composite material is characterized by comprising the following steps:

(1) weighing the following raw materials in parts by weight: 1-500 parts of sol, 0-300 parts of hot melt adhesive, 1-200 parts of composite material and 1000 parts of fiber base material, and continuously mixing the raw materials for sol compounding;

(2) under the action of quantitative alkali liquor as a catalyst, continuously mixing the sol complex to form gel through curing;

(3) drying the gel again to form an aerogel felt;

(4) continuously feeding the dried aerogel felt, the hot melt adhesive, the composite material and the auxiliary material into a hot melt coating machine for compounding, wherein the compounding temperature is 0-300 ℃;

(5) and (4) carrying out continuous shaping processing and packaging on the aerogel composite material subjected to hot coating, thus finishing the manufacture.

2. The continuous production process of aerogel felt composite material according to claim 1, wherein the drying method in step (3) comprises one or more of atmospheric hot air drying, supercritical drying, microwave drying or negative pressure drying.

3. The continuous aerogel blanket composite production process as claimed in claim 1, wherein the compounding temperature in step (4) is 100-250 ℃.

4. The continuous production process of the aerogel blanket composite of claim 1, wherein the sol is one or more of silica, alumina, zirconia, titania, iron oxide, zinc oxide, magnesium oxide, or strontium oxide.

5. The continuous production process of the aerogel felt composite material according to claim 1, wherein the composite material is formed by mixing one or more of polyethylene, polypropylene, polyester, polyurethane, terylene, polypropylene, chinlon, fiberglass cloth, aluminum foil cloth, polytetrafluoroethylene, a polyphenyl material and EVA, the thickness of the composite material is 0.1mm-300mm, and the number of layers is 2-20.

6. The continuous process for producing aerogel blanket composite of claim 4, wherein the composite has a thickness of 3mm to 20mm and a number of layers of 3 to 5.

7. The continuous process of claim 1, wherein the fibrous substrate is made of one or more of glass fibers, ceramic fibers, pre-oxygen fibers, aluminum silicate fibers, mullite fibers, basalt fibers, polyester fibers, or carbon fibers.

8. The continuous process for producing aerogel blanket composite of claim 1, wherein the sizing process comprises cutting, stacking, and shaping the outer shell into a shaped piece.

9. The application of the aerogel felt composite material is characterized in that the aerogel felt composite material can be used in the fields of building decoration materials, heat pipe network materials, new energy automobiles and household appliances.

Technical Field

The invention relates to the field of aerogel material manufacturing, in particular to a continuous production process and application of an aerogel felt composite material.

Background

The aerogel is a high-dispersion solid material which is formed by mutually aggregating nano-scale colloidal particles or high polymer molecules to form a nano-porous framework, and gaseous dispersion media are filled in holes, the porosity of the aerogel can reach more than 99 percent, the sizes of the holes and the framework are generally between 1 and 100nm, and the aerogel has unique performances in the aspects of force, heat, light, electricity, sound and the like, and can be widely applied to the aspects of heat insulation thermal engineering, particle detectors, high-speed particle collection, catalysts, catalyst carriers and the like.

The mechanical properties (strength, formability and flexibility) of the fiber composite aerogel are greatly improved, but due to the segmentation effect of the fibers, the aerogel is mostly embedded into gaps of a fiber body in the form of small particles, and the small particles on the surface are very easy to fall out in the production and use processes. The nano-scale small particles have potential harm to people, and the performance of the aerogel-based material is reduced along with the falling of the particles, so that the use effect and the service life of the aerogel-based material are influenced. Mechanical properties of the single aerogel felt are not suitable for special index requirements of fields such as new energy, military industry and the like, and performance improvement is needed.

The conventional powder-shedding-preventing scheme is that glass fiber cloth, aluminum foil cloth and the like are pasted on the surface of an aerogel fiber felt, the mode is high in labor cost and not beneficial to large-scale production, the mechanical property of the material is poor after the front side and the back side are pasted, the flexibility is reduced, the material is not easy to curl and bend, and the storage, the transportation, the construction and the installation are not convenient enough.

Disclosure of Invention

The invention aims to provide a continuous production process and application of an aerogel felt composite material, so as to solve the problems in the prior art.

The technical scheme adopted by the invention is as follows: a continuous process for producing an aerogel blanket composite, comprising the steps of:

(1) weighing the following raw materials in parts by weight: 1-500 parts of sol, 0-300 parts of hot melt adhesive, 1-200 parts of composite material and 1000 parts of fiber base material, and continuously mixing the raw materials for sol compounding;

(2) under the action of quantitative alkali liquor as a catalyst, continuously mixing the sol complex to form gel through curing;

(3) drying the gel again to form an aerogel felt;

(4) continuously feeding the dried aerogel felt, the hot melt adhesive, the composite material and the auxiliary material into a hot melt coating machine for compounding, wherein the compounding temperature is 0-300 ℃;

(5) and (4) carrying out continuous shaping processing and packaging on the aerogel composite material subjected to hot coating, thus finishing the manufacture.

Preferably, the drying method in step (3) includes one or more of atmospheric hot air drying, supercritical drying, microwave drying or negative pressure drying.

Preferably, the compounding temperature in the step (4) is 100-250 ℃.

Preferably, the sol is one or more of silicon dioxide, aluminum oxide, zirconium oxide, titanium oxide, iron oxide, zinc oxide, magnesium oxide and strontium oxide.

Preferably, the composite material is formed by mixing one or more of polyethylene, polypropylene, polyester, polyurethane, terylene, polypropylene, nylon, glass fiber cloth, aluminum foil cloth, polytetrafluoroethylene, a polyphenyl material and EVA, and the composite material has a thickness of 0.1mm-300mm and 2-20 layers.

Preferably, the thickness of the composite material is 3mm-20mm, and the number of layers is 3-5.

Preferably, the fiber substrate is made of one or more of glass fibers, ceramic fibers, pre-oxidized fiber, alumina silicate fibers, mullite fibers, basalt fibers, polyester fibers, or carbon fibers.

Preferably, the shaping processing comprises cutting, multilayer overlapping and making a shaping piece by combining a shaping shell.

The invention also provides an application of the aerogel felt composite material, and the aerogel felt composite material can be used in the fields of building decoration materials, heat pipe network materials, new energy automobiles and household appliances.

The continuous production process and the application of the aerogel felt composite material enhance the adhesive force and the mechanical property of aerogel powder on the composite material, reduce the dust pollution in the processes of transportation, installation and use and ensure the life health of a user; meanwhile, the invention has short production flow, simple and effective steps, is beneficial to reducing the cost and producing in large scale, and the prepared composite material has good flexibility, is easy to curl and is convenient to transport and construct. Through compounding of multiple materials, the comprehensive mechanical property is further improved on the basis of the original excellent heat insulation and sound insulation, and the composite material can be widely applied to the fields of building decoration materials, heat pipe network materials, new energy automobiles and household appliances.

Drawings

FIG. 1 is a flow chart of the production process of the present invention;

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.