Composite board core board and preparation method thereof, composite board comprising same and application thereof

Abstract

The invention provides a composite board core board and a preparation method thereof, a composite board containing it and applications thereof, the composite board core board includes cellulose substances and fillers; wherein the cellulose substances are nanocellulose, The nanocellulose has a diameter of 2-300nm and an aspect ratio of 50-400. The present invention selects the cellulose material to prepare the composite board. On the one hand, the cellulose material has a certain viscosity, and the addition of binder and other materials can be omitted, which is safe and pollution-free; on the other hand, the cellulose material has high strength and is compatible with filler Used together, a composite board core board with high strength can be obtained, and the preparation is simple; meanwhile, the composite board core board prepared by the invention has biodegradability and is environmentally friendly.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to a core board of a composite board, a preparation method thereof, a composite board containing the core board and an application thereof. Background technique [0002] At present, the materials for preparing the core board of the composite board mainly include EPS, rock wool, glass wool, flame-retardant paper honeycomb board, polyurethane, etc. Among them, the rock wool board is mainly made of basalt, which is processed into artificial inorganic fibers through high-temperature melting, and at the same time, a certain proportion of adhesive is evenly added to bake it into a large board. It is light in weight, but it does not have safety, low strength and Not environmentally friendly. EPS board is made of polystyrene resin as raw material plus other raw and auxiliary materials and polymers. It is a rigid foam plastic board manufactured by heating and mixing while injecting a cataly...

AI Technical Summary

Problems solved by technology

Among them, the rock wool board is mainly made of basalt, which is processed into artificial inorganic fibers through high-temperature melting, and at the same time, a certain proportion of adhesive is evenly added to bake it into a large board. It is light in weight, but it does not have safety, low strength and Not environmentally friendly

EPS board is made of polystyrene resin as raw material plus other raw and auxiliary materials and polymers. It is a rigid foam plastic board manufactured by heating and mixing while injecting a catalyst, and then extrusion molding. The EPS board of this structure has extremely Low water absorption, but not high enough strength, poor fire performance

Fiberglass boards are generally used for the base layer of the soft package, and then covered with fabric, leather, etc., to make beautiful wall and ceiling decorations. It is widely used, but there are still some shortcomings, such as no safety, low strength and no environmental protection. , these core materials generally have the disadvantages of low strength and insufficient environmental protection, which are difficult to meet people's use needs, and a large amount of adhesives are needed in the preparation process of the above core boards, which pollutes and is not environmentally friendly

[0003] CN106256800A discloses a non-combustible thermal insulation composite board, including a composite board core material, the raw material used in the composite board core material is a mixture of perlite and mineral wool in a mass ratio of 1:0.1-2, and the perlite can also be made of pearl Replaced by rock powder or expanded vitrified microbeads, the two form a honeycomb hollow structure. Although the strength has increased, it still needs to be used with adhesives

CN102924041A discloses a nanocomposite board core material, the formula ratio is 40-50% of magnesium oxide, 40-45% of magnesium chloride solution, 0.3-0.4% of acid, 0.5-1.5% of foaming agent, 0.5-1.5%, polystyrene particles 1 -2%, perlite 5-6%, nano-aerogel 0.02-0.05%, the core material provided by it is added with nano-materials, which improves the physical and chemical properties of the board, but due to the presence of too much metal material, its bonding bad sex

CN107244942A discloses a high-strength environmentally friendly composite board core material and a preparation method thereof, which consists of the following raw materials in parts by weight: 10-16 parts of water-based epoxy resin, 6-12 parts of porous graphene, 2-5 parts of nano calcium carbonate powder 5-10 parts of water-based polyurethane, 0.4-1.2 parts of dispersant, 1.5-4 parts of coupling agent, 0.1-0.6 parts of water reducing agent, 0.5-1.5 parts of foaming agent and 30-45 parts of construction waste; its utilization The construction waste meets the requirements of resource reuse, but its raw materials are too much and the preparation method is complicated, which increases the cost to a certain extent.

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