阅读说明：本技术 一种阻燃环保型刨花板及其制备方法 (Flame-retardant environment-friendly shaving board and preparation method thereof ) 是由 朱家科 张辉 陈润生 于 2020-05-06 设计创作，主要内容包括：本发明提供了一种阻燃环保型刨花板,包括芯层,所述芯层外部压贴胶合有电磁屏蔽层,所述电磁屏蔽层外部压贴胶合有阻燃层,所述阻燃层外部胶合有防腐层；所述电磁屏蔽层包括刨花和电磁屏蔽剂,所述电磁屏蔽剂包括导电钛白粉、柠檬酸钠和氨水；所述阻燃层包括刨花和阻燃剂,所述阻燃剂包括十溴二苯乙烷溶液；所述防腐层包括刨花和防腐剂,所述防腐剂硼酸镁和硼酸的混合溶液,所述胶黏剂采用的是混合比为1:1.5:0.05的二苯甲烷二异氰酸酯与二苯基甲烷二异氰酸酯以及有机硅油的混合物,本发明制得的刨花板,集环保性能、阻燃性能、电磁屏蔽性能和防腐性能于一体,具有重大价值。(The invention provides a flame-retardant environment-friendly shaving board which comprises a core layer, wherein an electromagnetic shielding layer is laminated and glued outside the core layer, a flame-retardant layer is laminated and glued outside the electromagnetic shielding layer, and an anticorrosive layer is glued outside the flame-retardant layer; the electromagnetic shielding layer comprises wood shavings and an electromagnetic shielding agent, and the electromagnetic shielding agent comprises conductive titanium dioxide, sodium citrate and ammonia water; the flame retardant layer comprises wood shavings and a flame retardant, and the flame retardant comprises a decabromodiphenylethane solution; the anti-corrosion layer comprises wood shavings and an anti-corrosion agent, the anti-corrosion agent is a mixed solution of magnesium borate and boric acid, the adhesive is a mixture of diphenylmethane diisocyanate, diphenylmethane diisocyanate and organic silicone oil, the mixing ratio of the diphenylmethane diisocyanate to the diphenylmethane diisocyanate is 1:1.5:0.05, and the prepared shaving board integrates the environmental protection performance, the flame retardant performance, the electromagnetic shielding performance and the anti-corrosion performance and has great value.)

1. The flame-retardant environment-friendly shaving board comprises a core layer (1), and is characterized in that electromagnetic shielding layers (2) are laminated and glued outside the core layer (1), flame-retardant layers (3) are laminated and glued outside two groups of electromagnetic shielding layers (2), and an anticorrosive layer (4) is laminated and glued outside the flame-retardant layers (3);

the core layer (1) comprises wood shavings which are one of straws, corn stalks, cotton stalks, hemp stalks, bagasse and wood chips used in the production of shaving boards;

the electromagnetic shielding layer (2) comprises wood shavings and an electromagnetic shielding agent, wherein the electromagnetic shielding agent comprises conductive titanium dioxide, sodium citrate and ammonia water;

the flame-retardant layer (3) comprises wood shavings and a flame retardant, and the flame retardant comprises a decabromodiphenylethane solution;

the anti-corrosion layer (4) comprises wood shavings and an anti-corrosion agent, and the anti-corrosion agent is a mixed solution of magnesium borate and boric acid, and is prepared according to the molar ratio of the magnesium borate to the boric acid of 1: 1-2;

the adhesive for pressing and gluing adopts a mixture of diphenylmethane diisocyanate, diphenylmethane diisocyanate and organic silicone oil, wherein the mixing ratio of the diphenylmethane diisocyanate to the diphenylmethane diisocyanate is 1:1.5: 0.05.

2. the method for preparing a flame-retardant environment-friendly particle board according to claim 1, comprising the following steps:

s01: making a core layer (1), namely screening and crushing raw material wood shavings, cutting edges and sanding the wood shavings to obtain seven wood shavings with the same specification, and taking out one wood shavings as the core layer for later use;

s02: and (3) manufacturing the electromagnetic shielding layer (2), namely taking the two wood shavings obtained in the step S01, cleaning the two wood shavings by ammonia water, adjusting the pH value to 6.5-7.5, and mixing the wood shavings with the electromagnetic shielding layer in a weight ratio of 1:1-2, adding the sodium citrate and the conductive titanium dioxide into a stirrer for stirring and mixing, injecting the stirred mixture into a shaving board through a vacuum injection tube, and pressing the shaving board injected with the electromagnetic shielding layer outside the core layer in a matched manner with an adhesive;

s03: manufacturing the flame-retardant layer (3), namely taking the two wood shavings obtained in the step S01, cleaning the wood shavings by using an NAOH solution to adjust the PH to 6.5-7.5, putting the two wood shavings into a decabromodiphenylethane solution for soaking, and after soaking, matching with an adhesive, using the wood shavings and sticking the wood shavings to the outside of the electromagnetic shielding layer in a pressing manner;

s04: manufacturing the anticorrosive layer (4), namely taking the two wood shavings obtained in the step S01, cleaning the wood shavings by using an NAOH solution to adjust the pH value to 6.5-7.5, coating a mixed solution of magnesium borate and boric acid on the wood shavings, and using the two coated wood shavings and an adhesive in a matched manner to be pressed and glued outside the flame retardant layer;

s05: and (5) carrying out hot pressing, cooling, packaging and warehousing on the shaving board prepared in the step (S04) to obtain a finished shaving board.

3. The method for preparing a flame-retardant environment-friendly particle board according to claim 2, wherein the method comprises the following steps: in the step S02, the stirring temperature of the stirrer is 70-80 ℃, the stirring time is 15-20min, and the water content of the shaving board after injection by the vacuum injection tube is 10% -12%.

4. The method for preparing a flame-retardant environment-friendly particle board according to claim 2, wherein the method comprises the following steps: in the step S03, the two wood shavings are soaked in the decabromodiphenylethane solution for 30-40 min.

5. The method for preparing a flame-retardant environment-friendly particle board according to claim 2, wherein the method comprises the following steps: in the step S04, the temperature during smearing is 30-40 ℃, and the smearing time is 1-1.5 h.

Technical Field

The invention mainly relates to the technical field of shaving boards, in particular to a flame-retardant environment-friendly shaving board and a preparation method thereof.

Background

The shaving board is applyed the adhesive hot pressing by the wood shavings and is formed, and traditional product adopts top layer sandwich layer gradual change structure group base of mating formation, and the physical and chemical properties is excellent, and the processing of being convenient for receives people's qing and ignores. With the technological progress, derived series products and deep processing varieties of the shaving boards are continuously appeared and improved, and various functional shaving boards are gradually applied to various fields of national economy.

The adhesive can not be separated in the production of the shaving board. At present, the urea-formaldehyde resin adhesive accounts for more than 90% of the total amount of production glue in the shaving board industry, but the urea-formaldehyde resin has the defects of water resistance and residual free formaldehyde hazard after board manufacturing, and along with the rapid development of market economy, the existing shaving board has multiple performances, is environment-friendly, non-toxic, anti-corrosion and flame-retardant, and has a great market prospect.

Disclosure of Invention

The invention mainly provides a flame-retardant environment-friendly shaving board and a preparation method thereof, which are used for solving the technical problems in the background technology.

The technical scheme adopted by the invention for solving the technical problems is as follows: the flame-retardant environment-friendly shaving board comprises a core layer, wherein electromagnetic shielding layers are laminated and glued outside the core layer, flame-retardant layers are laminated and glued outside two groups of electromagnetic shielding layers, and an anticorrosive layer is laminated and glued outside the flame-retardant layers;

the core layer comprises wood shavings which are one of straws, corn stalks, cotton stalks, hemp stalks, bagasse and wood chips used in the production of the shaving board;

the electromagnetic shielding layer comprises wood shavings and an electromagnetic shielding agent, and the electromagnetic shielding agent comprises conductive titanium dioxide, sodium citrate and ammonia water;

the flame retardant layer comprises wood shavings and a flame retardant, and the flame retardant comprises a decabromodiphenylethane solution;

the anti-corrosion layer comprises wood shavings and an anti-corrosion agent, and the anti-corrosion agent is a mixed solution of magnesium borate and boric acid, and is prepared according to the molar ratio of the magnesium borate to the boric acid of 1: 1-2;

the adhesive for pressing and gluing adopts a mixture of diphenylmethane diisocyanate, diphenylmethane diisocyanate and organic silicone oil, wherein the mixing ratio of the diphenylmethane diisocyanate to the diphenylmethane diisocyanate is 1:1.5: 0.05.

the preparation method of the flame-retardant environment-friendly shaving board comprises the following steps:

s01: preparing a core layer, namely screening and crushing raw material wood shavings, cutting edges and sanding the wood shavings to obtain seven wood shavings with the same specification, and taking out one wood shavings as the core layer for later use; seven wood shavings with the same specification are strip-shaped wood shavings and are formed by processing raw materials including straws, corn stalks, cotton stalks, hemp stalks, bagasse and wood chips used in the production of shaving boards.

S02: and (4) manufacturing the electromagnetic shielding layer, namely taking the two wood shavings obtained in the step S01, cleaning the two wood shavings by ammonia water, adjusting the pH value to 6.5-7.5, and mixing the wood shavings with the water according to the weight ratio of 1:1-2, adding the sodium citrate and the conductive titanium dioxide into a stirrer for stirring and mixing, injecting the stirred mixture into a shaving board through a vacuum injection tube, and pressing the shaving board injected with the electromagnetic shielding layer outside the core layer in a matched manner with an adhesive;

s03: making a flame-retardant layer, namely taking the two wood shavings obtained in the step S01, cleaning the wood shavings by using an NAOH solution to adjust the pH value to 6.5-7.5, soaking the two wood shavings in a decabromodiphenylethane solution, and after soaking, using the wood shavings and an adhesive in a matched manner to be pressed and glued outside the electromagnetic shielding layer;

s04: and (4) manufacturing the anticorrosive layer, namely taking the two wood shavings in the step S01, cleaning the two wood shavings by using an NAOH solution to adjust the pH value to 6.5-7.5, coating a mixed solution of magnesium borate and boric acid on the wood shavings, and matching the two coated wood shavings with an adhesive for use, pressing and gluing the wood shavings outside the flame-retardant layer.

S05: and (5) carrying out hot pressing, cooling, packaging and warehousing on the shaving board prepared in the step (S04) to obtain a finished shaving board.

Further, in the step S02, the stirring temperature of the stirrer is 70-80 ℃, the stirring time is 15-20min, and the water content of the shaving board after injection by the vacuum injection tube is 10% -12%.

Further, in the step S03, the two wood shavings are soaked in the decabromodiphenylethane solution for 30-40 min.

Further, in the step S04, the temperature during smearing is 30-40 ℃, and the smearing time is 1-1.5 h.

Compared with the prior art, the invention has the beneficial effects that:

the shaving board is simple in structure and convenient to manufacture, shaving flowers with different properties are glued together, so that the shaving board is endowed with flame retardant property, electromagnetic shielding property and corrosion resistance, and has higher market value.

The present invention will be explained in detail below with reference to specific examples.

Drawings

Figure 1 is a schematic view of a particle board according to the invention.

In the figure, 1-core layer; 2-an electromagnetic shielding layer; 3-a flame retardant layer; 4-anticorrosive coating.

Detailed Description

Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but as a more detailed description of certain aspects, features and embodiments of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The specification and examples are exemplary only.