阅读说明：本技术 一种耐水耐火环保型碳素纤维板及其制备方法 (Water-resistant, fire-resistant and environment-friendly carbon fiber board and preparation method thereof ) 是由 邬满意 于 2020-07-27 设计创作，主要内容包括：本发明公开了一种耐水耐火环保型碳素纤维板及其制备方法,该密度板包括如下组分：26.5-27.5份链接剂、37.5-38.5份木质纤维、16.5-17.5份脲醛树脂、6.5-7.5份天然木炭颗粒、8.5-9.5份石蜡和0.9-1.1份氯化铵,所述链接剂由纳米SiO<Sub>2</Sub>、纳米硅藻泥、相溶剂和催化剂制成；该制备方法,包括链接剂和混合料制备、干燥、制备和后处理的工艺步骤。本申请的密度板和制备方法,创造性的引入了链接剂,其不仅具有自粘作用,有效地减少了脲醛树脂的使用量,使产品中的甲醛含量大大减少,而且能对甲醛进行吸附和处理,大大改善了产品的环保性能。再者,用链接剂代替部分木质纤维,有利于降低生产成本。(The invention discloses a water-resistant, fire-resistant and environment-friendly carbon fiber board and a preparation method thereof, wherein the density board comprises the following components: 26.5-27.5 parts of linking agent, 37.5-38.5 parts of wood fiber, 16.5-17.5 parts of urea-formaldehyde resin, 6.5-7.5 parts of natural charcoal particles, 8.5-9.5 parts of paraffin and 0.9-1.1 part of ammonium chloride, wherein the linking agent is prepared from nano SiO 2 The nano diatom ooze, the phase solvent and the catalyst; the preparation method comprises the process steps of preparation of the linking agent and the mixture, drying, preparation and post-treatment. The density board and the preparation method creatively introduce the linking agent, have self-adhesion effect, effectively reduce the use amount of the urea-formaldehyde resin, greatly reduce the formaldehyde content in the product, adsorb and treat formaldehyde, and greatly improve the environmental protection performance of the product. Moreover, the linking agent is used for replacing part of wood fiber, which is beneficial to reducing the production cost.)

1. The waterproof and fireproof environment-friendly carbon fiber board is characterized by comprising the following components in parts by weight: 26.5-27.5 parts of linking agent, 37.5-38.5 parts of wood fiber, 16.5-17.5 parts of urea-formaldehyde resin, 6.5-7.5 parts of natural charcoal particles, 8.5-9.5 parts of paraffin and 0.9-1.1 parts of ammonium chloride; wherein the linking agent is made of nano SiO₂The nano diatom ooze is prepared from nano diatom ooze, a phase solvent and a catalyst.

2. The water-resistant fire-resistant environment-friendly carbon fiber board according to claim 1, wherein in the linking agent, nano SiO₂The weight ratio of the nano diatom ooze to the nano diatom ooze is 1: 1.05-1.3.

3. The water-resistant, fire-resistant and environment-friendly carbon fiber board according to claim 1, wherein the linking agent is composed of 40 wt% of nano SiO₂45 wt% of nano diatom ooze, 10 wt% of dispersing agent and 5 wt% of catalyst.

4. The water-resistant, fire-resistant and environment-friendly carbon fiber board according to claim 1, which comprises the following components in parts by weight: 27 parts of a linking agent, 38 parts of wood fiber, 17 parts of urea resin, 7 parts of natural charcoal particles, 9 parts of paraffin and 1 part of ammonium chloride.

5. The preparation method of the water-resistant, fire-resistant and environment-friendly carbon fiber board according to claim 1, which comprises the following steps:

preparation of a linking agent: mixing nano SiO₂Mixing the nanometer diatom ooze, adding a dispersing agent and a catalyst, and uniformly stirring to obtain a linking agent;

preparing a mixture: placing the wood fiber in a grinding machine, introducing a linking agent, and uniformly stirring; then urea-formaldehyde resin, natural charcoal particles, paraffin and ammonium chloride are introduced, and the mixture is uniformly stirred to obtain a mixture;

and (3) drying: drying the obtained mixture to obtain a dry material;

preparing a blank: paving the dried material obtained in the drying step to form a plate blank, and carrying out temperature programmed pressing at the temperature of 150-200 ℃ under the pressure of 2-3 standard atmospheric pressures to obtain a formed rough plate;

and (3) post-treatment: and (4) performing edge cutting and polishing post-treatment on the formed rough board to obtain a product.

6. The method as set forth in claim 5, wherein the drying temperature in the drying step is 160-180 ℃.

7. The method of claim 5, wherein in the step of preparing the embryo, the temperature programming operation comprises: heating to 150-.

8. The method of claim 5, wherein in the drying step, the mix is extruded into a high temperature drying tunnel for drying.

Technical Field

The invention relates to the technical field of building decorative plates, in particular to a water-resistant fire-resistant environment-friendly carbon fiber board and a preparation method thereof.

Background

The density board is one kind of board material and may be divided into fiber density board, glued density board, shaving density board, etc. The fiber density board is made up by soaking wood and tree branches in water, breaking and pressing, and is an artificial board made up by using wood fibre or other plant fibre as raw material, applying urea-formaldehyde resin or other applicable adhesive, and making the above-mentioned materials pass through the processes of paving, forming and high-temp. heat-conduction, etc. Wood-based panels, also known as particle boards, are produced from particles of wood or other lignocellulosic materials, which are glued under the action of heat and pressure after the application of a glue.

The density board has good market expectation and development prospect as a novel artificial board with excellent performance, wide application and extremely high comprehensive utilization rate, but the traditional density board and the preparation method thereof have the following defects:

1) the adhesive strength and density are improved by relying on urea-formaldehyde resin excessively, so that the content of formaldehyde exceeds the standard;

2) to increase density and strength, long fibers are often required, resulting in poor uniformity of the high density board produced.

3) The conventional density board has low water resistance and fire resistance, and is not suitable for being used indoors excessively.

With the development of society, people pay more and more attention to their physical and mental health and have higher and higher requirements on living environment. Although the medium-density and high-density fiber boards widely used at present are improved and reduced in free formaldehyde in the boards through various channels, the effect is not ideal due to various factors. For example, the Chinese patent with application number 201010191718.5 discloses a grey black carbon fiber environment-friendly medium and high density fiberboard and a manufacturing process thereof, which utilizes carbon melanin, carbon powder and carbon fiber to adsorb free formaldehyde in urea resin, thereby achieving the requirement of green environment protection, and the method has the disadvantages that: the carbon powder has a limited adsorption capacity and is released again when the amount of formaldehyde absorbed reaches saturation. As disclosed in the Chinese patent application No. 201610708333.9, "an environmental-friendly middle density board using light calcined powder as filler", which is prepared by adding light calcined powder "in a raw material formula, wherein the light calcined powder" is short for light calcined magnesia powder ", and the main component of the light calcined powder is magnesia MgO, and the light calcined powder is a product prepared by calcining natural magnesite ore as a main raw material at the temperature of 750-. The light-burned magnesium powder has a plurality of small capillary holes and has stronger adsorption effect on formaldehyde, and the formaldehyde removing mode also has the defects of limited adsorption capacity and secondary release when the absorbed formaldehyde reaches saturation.

In addition, wood fiber is the main raw material of density board, the needed wood fiber is huge in the production process, and the cost of wood is continuously increased along with the reduction of forest resources in recent years, so that the cost of density board production enterprises is continuously increased and the profit is continuously reduced, the 'environment-friendly middle density board using light burned powder as filler' disclosed in the Chinese patent with the application number of 201610708333.9 discloses a technical scheme for filling by using light burned powder so as to reduce the wood consumption, and the manufacturing cost of the light burned powder is lower than that of wood, so that the purpose of reducing the cost is achieved. Although the production cost is reduced to a certain extent by the mode, the material proportion shows that the dosage of the wood fiber reaches 7-8 times of that of the light calcined powder, so the light calcined powder has a limited effect on reducing the dosage of the wood fiber, and further has relatively limited influence on the production cost.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a water-resistant, fire-resistant and environment-friendly carbon fiber board and a preparation method thereof, so that the production cost is reduced, the formaldehyde content is reduced, the water-resistant and fire-resistant grade is improved, and the environment-friendly performance is improved.

The invention solves the problems through the following technical means:

a waterproof and fireproof environment-friendly carbon fiber board comprises the following components in parts by weight: 26.5-27.5 parts of linking agent, 37.5-38.5 parts of wood fiber, 16.5-17.5 parts of urea-formaldehyde resin, 6.5-7.5 parts of natural charcoal particles, 8.5-9.5 parts of paraffin and 0.9-1.1 parts of ammonium chloride; wherein the linking agent is made of nano SiO₂The nano diatom ooze is prepared from nano diatom ooze, a phase solvent and a catalyst.

Further, in the linking agent, nano SiO₂The weight ratio of the nano diatom ooze to the nano diatom ooze is 1: 1.05-1.3.

Further, the linking agent is composed of 40 wt% of nano SiO₂45 wt% of nano diatom ooze, 10 wt% of dispersing agent and 5 wt% of catalyst.

Further, the coating comprises the following components in parts by weight: 27 parts of a linking agent, 38 parts of wood fiber, 17 parts of urea resin, 7 parts of natural charcoal particles, 9 parts of paraffin and 1 part of ammonium chloride.

The method for preparing the water-resistant, fire-resistant and environment-friendly carbon fiber board according to claim 1, which comprises the following steps:

preparation of a linking agent: mixing nano SiO₂Mixing the nanometer diatom ooze, adding a dispersing agent and a catalyst, and uniformly stirring to obtain a linking agent;

preparing a mixture: placing the wood fiber in a grinding machine, introducing a linking agent, and uniformly stirring; then urea-formaldehyde resin, natural charcoal particles, paraffin and ammonium chloride are introduced, and the mixture is uniformly stirred to obtain a mixture;

and (3) drying: extruding the obtained mixture into a high-temperature drying pipeline, and drying to obtain a dry material;

preparing a blank: paving the dried material obtained in the drying step to form a plate blank, and carrying out temperature programmed pressing at the temperature of 150-200 ℃ under the pressure of 2-3 standard atmospheric pressures to obtain a formed rough plate;

and (3) post-treatment: and (4) performing edge cutting and polishing post-treatment on the formed rough board to obtain a product.

Further, in the drying step, the drying temperature is 160-180 ℃.

Further, in the step of preparing the embryo, the temperature programming operation is as follows: heating to 150-.

The invention has the beneficial effects that:

1. creatively introduces a linking agent, and the main component of the linking agent is nano SiO₂And nanometer diatom ooze, nanometer SiO₂And the nano diatom ooze not only has the adsorption effect on free formaldehyde in the urea-formaldehyde resin, but also has nano SiO₂And diatom ooze, its inside can form "network structure" and "microbattery", the sustainable negative oxygen ion that produces will be adsorbed the formaldehyde in the micropore and decompose into water and carbon dioxide, avoided when the formaldehyde volume of absorption is saturated, the drawback that releases once more, greatly reduced the formaldehyde content of product to green's requirement has been reached.

2. The formaldehyde in the urea-formaldehyde resin is comprehensively adsorbed by the linking agent and the charcoal particles, so that the adsorption effect on the formaldehyde is greatly improved.

3. The linking agent has self-adhesion effect, effectively reduces the use amount of the urea-formaldehyde resin, and greatly reduces the formaldehyde content in the product.

4. The low-cost linking agent is used for replacing part of wood fibers, so that the purpose of replacing wood with ore is realized, the use amount of the wood fibers is effectively reduced, and the production cost is saved.

5. The linking agent has good waterproof and flame retardant properties, and the waterproof and fire-resistant properties of the product are effectively improved.

Detailed Description

The present invention will be described in further detail below with reference to examples. The features and advantages of the present invention will become more apparent from the description. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments.

The action of each component is first explained, and is specifically shown in table 1:

TABLE 1

The above and further features and advantages of the invention are explained in more detail below with reference to examples and experimental data.