Bamboo fiber-based flame-retardant paper-plastic new material and preparation method thereof

Abstract

The invention discloses a bamboo fiber-based flame-retardant paper-plastic new material, which comprises the following main components: bamboo chemical pulp, bamboo chemithermomechanical pulp, wood pulp chemical pulp, wood pulp chemithermomechanical pulp and broken pulp, the main components comprise, by mass, 10%-40% of a silicon-based material, 2%-15% of light calcium carbonate, 1%-5% of heavy calcium carbonate, 1%-5% of amorphous silica, 1%-5% of titanium dioxide, 1%-5% of porcelain clay, 1%-5% of talcum powder, 1%-5% of an AKD sizing agent, 0.1%-1% of PAE, 0.1%-0.5% of CMC, 0.2%-0.5% of chitosan, 0.2%-0.5% of PAM, 2%-8% of hydrogen peroxide, 1%-5% of sodium silicate and 0.2%-2% of EDTA. The prepared paper-plastic product has excellent flame retardant property, bulk, smoothness and optical property, also has water resistance and oil resistance, and is especially suitable for application fields of cultural and creative works and the like with high requirements on surface characteristics and protection performance.

Description

Technical Field

[0001] The invention belongs to the technical field of paper-plastic materials, and particularly relates to a bamboo fiber-based flame-retardant new paper-plastic material and a preparation method thereof. Background Art

[0002] Pulp molding is a three-dimensional papermaking technology that uses various natural plant fibers such as bamboo pulp, wood pulp, waste paper pulp, and bagasse pulp as raw materials. Through different pulping processes and the addition of different functional additives, different molding methods are used to give paper-plastic products a certain three-dimensional structure and unique properties and functions.

[0003] Paper-plastic products are mainly used in catering packaging, industrial product packaging, agricultural food packaging, clothing packaging, cultural and creative products, gifts and other fields; the paper-plastic products currently used in cultural and creative products are mainly made of a mixture of paper pulp and chemical additives, through wet pressing, dry pressing and dry-wet pressing mixing processes. When used in cultural and creative works, they cannot fully demonstrate the effects of cultural and creative works, and the current paper-plastic materials are generally non-protective products, or only have waterproof or oil-proof properties, lack heat resistance and fire resistance, and have low bulk, smoothness and optical properties. When used in cultural and creative works, they are very easy to be damaged and difficult to preserve. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned existing technologies and provide a new bamboo fiber-based flame-retardant paper-plastic material and a preparation method thereof. The paper-plastic product produced by the present invention has excellent flame retardancy, bulk, smoothness and optical properties, and is also waterproof and oil-proof. It is particularly suitable for application fields such as cultural and creative works that have high requirements on surface properties and protective performance.

[0005] The technical solution adopted by the present invention is: a bamboo fiber-based flame-retardant new paper-plastic material, comprising a main component and a secondary component, wherein the main component comprises bamboo chemical pulp, bamboo chemimechanical pulp, wood pulp chemical pulp, wood pulp chemimechanical pulp and broken paper pulp; and the secondary component comprises, calculated as a percentage by mass of the total absolute dry pulp of the main component, 10%-40% of a silicon-based material, 2%-15% of light calcium carbonate, 1%-5% of heavy calcium carbonate, 1%-5% of amorphous silica, 1%-5% of titanium dioxide, 1%-5% of porcelain clay, 1%-5% of talc, 1%-5% of AKD sizing agent, 0.1%-1% of PAE, 0.1%-0.5% of CMC, 0.2%-0.5% of chitosan, 0.2%-0.5% of PAM, 2%-8% of hydrogen peroxide, 1%-5% of sodium silicate and 0.2%-2% of EDTA.

[0006] Preferably, the silicon-based material is a fibrous silicate-based nanofiller, including magnesium aluminum hydrotalcite.

[0007] Preferably, the main components include 4-7 parts of bamboo chemical pulp, 0-4 parts of wood chemical pulp and 0.5-3 parts of broken paper pulp by weight.

[0008] Preferably, the main components include 4-6 parts of bamboo chemimechanical pulp, 1-5 parts of wood chemimechanical pulp and 0.5-3 parts of broken paper pulp by weight.

[0009] Preferably, the new paper-plastic material includes 4 parts of bamboo chemical pulp, 2 parts of wood pulp chemical pulp and 1 part of waste pulp, calculated by absolute dry pulp mass, and 15% of silicon-based material, 5% of light calcium carbonate, 2% of heavy calcium carbonate, 1% of amorphous silica, 2% of titanium dioxide, 3% of porcelain clay, 1% of talc, 1.5% of AKD sizing agent, 0.5% of PAE, 0.1% of CMC, 0.2% of chitosan, 0.2% of PAM, 3% of hydrogen peroxide, 1% of sodium silicate and 0.5% of EDTA, calculated by absolute dry pulp mass percentage of the total absolute dry pulp of bamboo chemical pulp, wood pulp chemical pulp and waste pulp.

[0010] Preferably, the new paper-plastic material includes 7 parts of bamboo chemical pulp, 4 parts of wood pulp chemical pulp and 3 parts of waste pulp, calculated by absolute dry pulp mass, and 40% of silicon-based material, 15% of light calcium carbonate, 5% of heavy calcium carbonate, 5% of amorphous silica, 5% of titanium dioxide, 5% of porcelain clay, 5% of talc, 5% of AKD sizing agent, 1% of PAE, 0.5% of CMC, 0.5% of chitosan, 0.5% of PAM, 8% of hydrogen peroxide, 5% of sodium silicate and 2% of EDTA, calculated by absolute dry pulp mass percentage of the total absolute dry pulp of bamboo chemical pulp, wood pulp chemical pulp and waste pulp.

[0011] Preferably, the new paper-plastic material includes 4 parts of bamboo chemimechanical pulp, 1 part of wood pulp chemimechanical pulp and 0.5 parts of waste pulp, calculated by absolute dry pulp mass, and 10% of silicon-based material, 10% of light calcium carbonate, 1% of heavy calcium carbonate, 2% of amorphous silica, 1% of titanium dioxide, 2% of porcelain clay, 3% of talc, 1% of AKD sizing agent, 0.2% of PAE, 0.2% of CMC, 0.1% of chitosan, 0.1% of PAM, 2% of hydrogen peroxide, 1.5% of sodium silicate and 1% of EDTA, calculated by absolute dry pulp mass percentage of the total absolute dry pulp of bamboo chemimechanical pulp, wood pulp chemimechanical pulp and waste pulp.

[0012] Preferably, the new paper-plastic material includes 6 parts of bamboo chemimechanical pulp, 5 parts of wood pulp chemimechanical pulp and 3 parts of waste pulp, calculated by absolute dry pulp mass, and 35% of silicon-based material, 20% of light calcium carbonate, 5% of heavy calcium carbonate, 5% of amorphous silica, 5% of titanium dioxide, 5% of porcelain clay, 5% of talc, 5% of AKD sizing agent, 1% of PAE, 0.5% of CMC, 0.5% of chitosan, 0.5% of PAM, 8% of hydrogen peroxide, 5% of sodium silicate and 2% of EDTA, calculated by absolute dry pulp mass percentage of the total absolute dry pulp of bamboo chemimechanical pulp, wood pulp chemimechanical pulp and waste pulp.

[0013] Preferably, a method for preparing a bamboo fiber-based flame-retardant new paper-plastic material comprises selecting bamboo pulp board, paper pulp board and silicon-based material according to a ratio, pulping and refining the pulp, adding other auxiliary ingredients according to a ratio and mixing the mixture, and forming the mixture through a molding machine. After shaping the mixture through a servo shaping machine, the paper-plastic finished product is obtained.

[0014] Preferably, a preparation method of a bamboo fiber-based flame-retardant new paper-plastic material is provided, characterized in that: the waste material that fails to be shaped by the servo shaping machine is crushed into waste pulp by a hydraulic pulper, the waste pulp is mixed with the refined bamboo pulp and wood pulp, and then auxiliary components are added again and mixed before molding.

[0015] The beneficial effects of the present invention are: (1) Using bamboo fiber and wood fiber as the main components, the manufacturing cost is low and it has good physical strength; (2) Adding silicon-based materials into the pulp according to the absolute dry weight of the pulp, beating the pulp together with the pulp through a hydraulic pulper and a refiner to a pulping tank, and then adding appropriate chemical additives to obtain a fibrous, porous honeycomb structure with a small average particle size, a high specific surface area, porosity and retention rate, thereby improving the bulk, smoothness and optical properties of the paper-plastic product and making it have good flame retardant properties; The paper-plastic product prepared by the present invention has excellent flame retardancy, bulk, smoothness and optical properties, and is also waterproof and oil-proof. It is particularly suitable for application fields such as cultural and creative works that have high requirements on surface properties and protective performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a process flow chart of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0018] like Figure 1 As shown, the present embodiment provides a bamboo fiber-based flame-retardant new paper-plastic material, which is selected from 400g of bamboo chemical pulp, 200g of wood pulp chemical pulp and 100g of waste pulp, as well as 105g of magnesium-aluminum hydrotalcite, 35g of light calcium carbonate, 14g of heavy calcium carbonate, 7g of amorphous silica, 14g of titanium dioxide, 21g of china clay, 7g of talc, 10.5g of AKD sizing agent, 3.5g of PAE, 0.7g of CMC, 1.4g of chitosan, 1.4g of PAM, 21g of hydrogen peroxide, 7g of sodium silicate, and 3.5g of EDTA; The bamboo chemical pulp and wood pulp chemical pulp are prepared by pulping and refining bamboo pulp boards and wood pulp boards, and the waste pulp is obtained by collecting waste materials that are unqualified after being reshaped by a servo shaping machine and then crushing the waste materials by a hydraulic pulper; bamboo pulp boards, wood pulp boards and silicon-based materials are selected according to a ratio for pulping and refining, and then other auxiliary components and waste pulp are added according to a ratio, and after being evenly mixed, they are formed by a molding machine, and after forming, they are shaped by a servo shaping machine, and a paper plastic product is obtained after the shaping is qualified. Example

[0019] This embodiment is basically the same as Example 1, except that the ratio of the main component and the auxiliary component is different. 700g of bamboo chemical pulp, 400g of wood pulp chemical pulp and 300g of waste pulp are selected, as well as 560g of magnesium-aluminum hydrotalcite, 210g of light calcium carbonate, 70g of heavy calcium carbonate, 70g of amorphous silica, 70g of titanium dioxide, 70g of porcelain clay, 70g of talc, 70g of AKD sizing agent, 14g of PAE, 7g of CMC, 7g of chitosan, 7g of PAM, 112g of hydrogen peroxide, 70g of sodium silicate, and 28g of EDTA are selected. In this example, the amount of magnesium-aluminum hydrotalcite used is 40% of the total dry pulp mass of bamboo chemical pulp, wood pulp chemical pulp and waste pulp, and the oxygen index of the new paper-plastic material is above 25%, reaching the flame retardant grade. Example

[0020] This example is basically the same as Example 1, except that the main components and the amounts of the main components and auxiliary components are changed. 400 g of bamboo chemimechanical pulp, 100 g of wood pulp chemimechanical pulp, and 50 g of waste pulp are selected, as well as 55 g of magnesium-aluminum hydrotalcite, 55 g of light calcium carbonate, 5.5 g of heavy calcium carbonate, 11 g of amorphous silica, 5.5 g of titanium dioxide, 11 g of porcelain clay, 16.5 g of talc, 5.5 g of AKD sizing agent, 1.1 g of PAE, 1.1 g of CMC, 0.55 g of chitosan, 0.55 g of PAM, 11 g of hydrogen peroxide, 8.25 g of sodium silicate, and 5.5 g of EDTA. Example

[0021] This embodiment is basically the same as Example 1, except that the main components and the amounts of the main components and auxiliary components are changed. 600 g of bamboo chemimechanical pulp, 500 g of wood pulp chemimechanical pulp and 300 g of waste pulp are selected, as well as 490 g of magnesium-aluminum hydrotalcite, 280 g of light calcium carbonate, 70 g of heavy calcium carbonate, 70 g of amorphous silica, 70 g of titanium dioxide, 70 g of porcelain clay, 70 g of talc, 70 g of AKD sizing agent, 14 g of PAE, 7 g of CMC, 7 g of chitosan, 7 g of PAM, 112 g of hydrogen peroxide, 70 g of sodium silicate and 28 g of EDTA are selected.

[0022] The paper-plastic products prepared in Examples 1 to 4 all comply with the national standards General Technical Requirements for Plant Fiber Molded Products (GBT30406-2013) and Technical Specifications for Pulp Molded Products (GBT42943-2023); at the same time, the prepared paper-plastic products have good physical strength and good flame retardant properties, so that when they are used in cultural and creative works, they can enable the cultural and creative works to exhibit excellent surface properties and protective properties, reducing the difficulty of preserving cultural and creative works.

[0023] The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any modification and replacement based on the technical solution and inventive concept provided by the present invention should be covered by the protection scope of the present invention.

Claims

1. A bamboo fiber-based flame-retardant new paper-plastic material, characterized by: The invention comprises main components and auxiliary components, wherein the main components comprise bamboo chemical pulp, bamboo chemimechanical pulp, wood pulp chemical pulp, wood pulp chemimechanical pulp and broken paper pulp; and the auxiliary components comprise, calculated as a percentage by mass of the total absolute dry pulp of the main components, 10%-40% of silicon-based materials, 2%-15% of light calcium carbonate, 1%-5% of heavy calcium carbonate, 1%-5% of amorphous silica, 1%-5% of titanium dioxide, 1%-5% of china clay, 1%-5% of talc, 1%-5% of AKD sizing agent, 0.1%-1% of PAE, 0.1%-0.5% of CMC, 0.2%-0.5% of chitosan, 0.2%-0.5% of PAM, 2%-8% of hydrogen peroxide, 1%-5% of sodium silicate and 0.2%-2% of EDTA.

2. The bamboo fiber-based flame-retardant new paper-plastic material according to claim 1, characterized in that: The silicon-based material adopts fibrous silicate-based nanofiller, including magnesium aluminum hydrotalcite.

3. The bamboo fiber-based flame-retardant new paper-plastic material according to claim 2, characterized in that: The main components include 4-7 parts of bamboo chemical pulp, 0-4 parts of wood chemical pulp and 0.5-3 parts of broken paper pulp based on the mass of absolute dry pulp.

4. The bamboo fiber-based flame-retardant new paper-plastic material according to claim 2, characterized in that: The main components include 4-6 parts of bamboo chemimechanical pulp, 1-5 parts of wood pulp chemimechanical pulp and 0.5-3 parts of broken paper pulp based on the mass of the absolute dry pulp.

5. The bamboo fiber-based flame-retardant new paper-plastic material according to claim 3, characterized in that: The new paper-plastic material includes 4 parts of bamboo chemical pulp, 2 parts of wood chemical pulp and 1 part of waste pulp, calculated by absolute dry pulp mass, and 15% of silicon-based material, 5% of light calcium carbonate, 2% of heavy calcium carbonate, 1% of amorphous silica, 2% of titanium dioxide, 3% of porcelain clay, 1% of talc, 1.5% of AKD sizing agent, 0.5% of PAE, 0.1% of CMC, 0.2% of chitosan, 0.2% of PAM, 3% of hydrogen peroxide, 1% of sodium silicate and 0.5% of EDTA, calculated by absolute dry pulp mass percentage of the total absolute dry pulp of bamboo chemical pulp, wood chemical pulp and waste pulp.

6. The bamboo fiber-based flame-retardant new paper-plastic material according to claim 3, characterized in that: The new paper-plastic material includes 7 parts of bamboo chemical pulp, 4 parts of wood pulp chemical pulp and 3 parts of waste pulp, calculated by absolute dry pulp mass, and 40% of silicon-based material, 15% of light calcium carbonate, 5% of heavy calcium carbonate, 5% of amorphous silica, 5% of titanium dioxide, 5% of porcelain clay, 5% of talc, 5% of AKD sizing agent, 1% of PAE, 0.5% of CMC, 0.5% of chitosan, 0.5% of PAM, 8% of hydrogen peroxide, 5% of sodium silicate and 2% of EDTA, calculated by absolute dry pulp mass percentage of the total absolute dry pulp of bamboo chemical pulp, wood pulp chemical pulp and waste pulp.

7. The bamboo fiber-based flame-retardant new paper-plastic material according to claim 4, characterized in that: The new paper-plastic material comprises, calculated by absolute dry pulp mass, 4 parts of bamboo chemimechanical pulp, 1 part of wood chemimechanical pulp and 0.5 parts of waste paper pulp, and, calculated by absolute dry pulp mass percentage of the total absolute dry pulp of the bamboo chemimechanical pulp, the wood chemimechanical pulp and the waste paper pulp, 10% of silicon-based material, 10% of light calcium carbonate, 1% of heavy calcium carbonate, 2% of amorphous silica, 1% of titanium dioxide, 2% of china clay, 3% of talc, 1% of AKD sizing agent, 0.2% of PAE, 0.2% of CMC, 0.1% of chitosan, 0.1% of PAM, 2% of hydrogen peroxide, 1.5% of sodium silicate and 1% of EDTA.

8. The bamboo fiber-based flame-retardant new paper-plastic material according to claim 4, characterized in that: The new paper-plastic material includes 6 parts of bamboo chemimechanical pulp, 5 parts of wood pulp chemimechanical pulp and 3 parts of waste pulp, calculated by absolute dry pulp mass, and 35% of silicon-based material, 20% of light calcium carbonate, 5% of heavy calcium carbonate, 5% of amorphous silica, 5% of titanium dioxide, 5% of porcelain clay, 5% of talc, 5% of AKD sizing agent, 1% of PAE, 0.5% of CMC, 0.5% of chitosan, 0.5% of PAM, 8% of hydrogen peroxide, 5% of sodium silicate and 2% of EDTA, calculated by absolute dry pulp mass percentage of the total absolute dry pulp of bamboo chemimechanical pulp, wood pulp chemimechanical pulp and waste pulp.

9. The method for preparing a bamboo fiber-based flame-retardant paper-plastic new material according to any one of claims 1 to 8, characterized in that: Bamboo pulp board, paper pulp board and silicon-based materials are selected according to the ratio for pulping and grinding, and then other auxiliary ingredients are added according to the ratio and mixed, and then formed by a molding machine, and then shaped by a servo shaping machine to obtain a paper plastic product.

10. The method for preparing a bamboo fiber-based flame-retardant paper-plastic new material according to claim 9, characterized in that: The waste materials that are not shaped by the servo shaping machine are crushed into waste pulp by a hydraulic pulper. The waste pulp is mixed with bamboo pulp and wood pulp after pulping, and then auxiliary components are added and mixed before molding.

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