Preparation method of paper pulp with novel material formula

Abstract

The invention relates to the technical field of preparation of new paper materials, in particular to a preparation method of paper pulp with a new material formula. According to the preparation method, glass fibers, polyethyleneimine and silicon carbide are subjected to a deposition reaction, titanium and magnesium target materials are bombarded through plasma, titanium and magnesium atoms are sputtered out of the surfaces of the target materials and deposited on the surfaces of the glass fibers, and the novel composite fiber material is obtained. When being used as a paper pulp formula to be blended and homogenized with plant fibers, the plant fibers can be quickly dispersed and well combined with the plant fibers, so that the performance of paper prepared from the paper pulp is improved, and the paper prepared from the prepared paper pulp can be placed for a long time in multiple severe environments of high temperature, high humidity, high oxygen concentration and ultraviolet irradiation; and good tensile property and tear resistance can still be maintained.

Description

Technical Field

[0001] The invention relates to the technical field of new paper material preparation, and in particular to a method for preparing paper pulp with a new material formula. Background Art

[0002] Preparing pulp is an important process in the papermaking process, and its formula and process are key factors affecting the quality of paper. In the prior art, there is a method of improving the mechanical properties of paper by adding glass fiber to the papermaking formula. For example, a Chinese patent with authorization announcement number CN105040513B discloses a method for preparing glass fiber reinforced paper. Although the above method can improve the tear resistance of paper to a certain extent, when the paper is stored for a long time, it will be oxidized, causing the paper to turn yellow, become brittle, infested with insects and mold, and the tear resistance will drop sharply. Therefore, it is urgent to improve the formula of pulp so that the prepared pulp can maintain long-lasting excellent mechanical properties when used for papermaking. Summary of the invention

[0003] The technical problem to be solved by the present invention is to improve the formula of pulp so that the prepared pulp can maintain long-lasting excellent mechanical properties when used for papermaking.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A method for preparing pulp with a new material formula comprises the following steps:

[0006] Step 1: preparing a silicon carbide dispersion solution;

[0007] Step 2: Remove the oil stains on the surface of the glass fiber, add the glass fiber and polyethyleneimine into the silicon carbide dispersion solution, and make the polyethyleneimine and silicon carbide co-deposit on the surface of the glass fiber;

[0008] Step 3: placing metal titanium and metal magnesium targets in a sputtering chamber of a sputtering device, placing the glass fiber that has been subjected to deposition modification treatment on a substrate opposite to the target, introducing an inert gas into the sputtering chamber, applying voltage and current to ionize the gas to form plasma, and the ions in the plasma bombard the titanium and magnesium targets under the action of the electric field, so that titanium and magnesium atoms are sputtered out from the surface of the target and deposited on the surface of the glass fiber, thereby obtaining a new composite fiber material for preparing pulp;

[0009] Step 4: preparing plant fiber slurry, mixing plant fiber raw material, calcium hydroxide, anthraquinone, polyvinyl alcohol, and water in a mass ratio of 5-7: 0.2-1: 0.5-1: 0.3-0.5: 90-95, and performing homogenization to obtain plant fiber slurry;

[0010] Step 5: Add 0.3-0.5%wt of the composite fiber new material to the plant fiber slurry, continue homogenizing, and obtain paper pulp.

[0011] Furthermore, in the above-mentioned method for preparing pulp with a new material formula, step 1 is specifically: soaking silicon carbide powder in hydrofluoric acid to remove impurities on the surface, then taking it out and adjusting the pH value to neutral, and finally drying the treated silicon carbide powder and coupling agent by ultrasonic dispersion in ethylene glycol to form a uniform silicon carbide dispersion solution.

[0012] Furthermore, in the method for preparing the pulp having the new material formula, in step 2, the mass ratio of glass fiber, polyethyleneimine, and silicon carbide is 5-10:1-2:2-3.

[0013] Furthermore, in the method for preparing the pulp having the new material formula, in step 3, in the new composite fiber material, the mass ratio of metal titanium, metal magnesium, and modified glass fiber is 1-2:2-3:8-10.

[0014] Furthermore, in the above method for preparing pulp with a new material formula, in step 4, the homogenization pressure of the homogenization process is 40-50 MPa.

[0015] Furthermore, in the above method for preparing pulp with a new material formula, in step 5, the homogenization pressure of the homogenization process is 60-70 MPa.

[0016] Furthermore, in the method for preparing the pulp having the new material formula, the particle size of the composite fiber new material is less than 500 μm.

[0017] The beneficial effect of the present invention is that: the present invention carries out a deposition reaction of glass fiber, polyethyleneimine and silicon carbide, and then bombards titanium and magnesium targets through plasma, so that titanium and magnesium atoms are sputtered from the surface of the target and deposited on the surface of the glass fiber, thereby obtaining a new composite fiber material. The material has good fiber fusion ability, and when used as a pulp formula and blended homogenously with plant fibers, it can be quickly dispersed and well combined with the plant fibers, thereby improving the performance of paper made from pulp. The paper made from the obtained pulp can be placed for a long time in multiple harsh environments of high temperature, high humidity, high oxygen concentration and ultraviolet light, and can still maintain good tensile properties and tear resistance. DETAILED DESCRIPTION

[0018] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes.

[0019] The specific embodiment of the present invention relates to a method for preparing pulp having a new material formulation, comprising the following steps:

[0020] Step 1: Soak the silicon carbide powder in hydrofluoric acid to remove impurities on the surface, then take it out and adjust the pH value to neutral, and finally dry it. Ultrasonic disperse the treated silicon carbide powder and coupling agent in ethylene glycol to form a uniform silicon carbide dispersion solution;

[0021] Step 2: Remove the oil stains on the surface of the glass fiber, add the glass fiber and polyethyleneimine into the silicon carbide dispersion solution, and make the polyethyleneimine and silicon carbide co-deposit on the surface of the glass fiber, and the mass ratio of the glass fiber, polyethyleneimine and silicon carbide is 5-10:1-2:2-3;

[0022] Step 3: placing titanium and magnesium targets in a sputtering chamber of a sputtering device, placing the deposited modified glass fiber on a substrate opposite the target, introducing an inert gas into the sputtering chamber, applying voltage and current to ionize the gas to form a plasma, wherein the ions in the plasma bombard the titanium and magnesium targets under the action of the electric field, so that titanium and magnesium atoms are sputtered from the surface of the target and deposited on the surface of the glass fiber, thereby obtaining a new composite fiber material for preparing pulp, wherein the mass ratio of titanium, magnesium and modified glass fiber in the new composite fiber material is 1-2:2-3:8-10, and the particle size of the new composite fiber material is less than 500 μm;

[0023] Step 4: preparing plant fiber slurry, mixing plant fiber raw material, calcium hydroxide, anthraquinone, polyvinyl alcohol, and water in a mass ratio of 5-7: 0.2-1: 0.5-1: 0.3-0.5: 90-95, and homogenizing to obtain plant fiber slurry, wherein the homogenizing pressure during the homogenization process is 40-50 MPa;

[0024] Step 5: Add 0.3-0.5%wt of the composite fiber new material to the plant fiber slurry, continue homogenizing, and obtain paper pulp. The homogenizing pressure during the homogenizing process is 60-70MPa.

[0025] Example 1

[0026] A method for preparing pulp with a new material formula comprises the following steps:

[0027] Step 1: Soak the silicon carbide powder in hydrofluoric acid to remove impurities on the surface, then take it out and adjust the pH value to neutral, and finally dry it. Ultrasonic disperse the treated silicon carbide powder and coupling agent in ethylene glycol to form a uniform silicon carbide dispersion solution;

[0028] Step 2: Remove the oil stains on the surface of the glass fiber, add the glass fiber and polyethyleneimine into the silicon carbide dispersion solution, and make the polyethyleneimine and silicon carbide co-deposit on the surface of the glass fiber, and the mass ratio of the glass fiber, polyethyleneimine and silicon carbide is 7:1.5:2.5;

[0029] Step 3: placing titanium and magnesium targets in a sputtering chamber of a sputtering device, placing the deposited modified glass fiber on a substrate opposite the target, introducing an inert gas into the sputtering chamber, applying voltage and current to ionize the gas to form a plasma, wherein the ions in the plasma bombard the titanium and magnesium targets under the action of the electric field, so that titanium and magnesium atoms are sputtered from the surface of the target and deposited on the surface of the glass fiber, thereby obtaining a new composite fiber material for preparing pulp, wherein the mass ratio of titanium, magnesium and modified glass fiber in the new composite fiber material is 1.5:2.5:9, and the average particle size of the new composite fiber material is 385 μm;

[0030] Step 4: preparing plant fiber slurry, mixing plant fiber raw material, calcium hydroxide, anthraquinone, polyvinyl alcohol, and water in a mass ratio of 6:0.5:0.8:0.4:93, and homogenizing to obtain plant fiber slurry, wherein the homogenizing pressure during the homogenization process is 45 MPa;

[0031] Step 5: Add 0.4%wt of the composite fiber new material to the plant fiber slurry, continue homogenizing, and obtain paper pulp. The homogenizing pressure during the homogenizing process is 65MPa.

[0032] Comparative Example 1

[0033] The method for preparing pulp with a new material formula described in Example 1 is different in that step 1 and step 2 are omitted, glass fiber is used in step 3 instead of glass fiber after deposition modification treatment, and other steps remain unchanged.

[0034] Comparative Example 2

[0035] The method for preparing pulp with a new material formula described in Example 1 is different in that the metal magnesium target is omitted and the other steps remain unchanged.

[0036] Comparative Example 3

[0037] The method for preparing pulp with a new material formula described in Example 1 is different in that the metal titanium target is omitted and the other steps remain unchanged.

[0038] Comparative Example 4

[0039] The method for preparing pulp with a new material formula described in Example 1 is different in that in step 2, the mass ratio of glass fiber, polyethyleneimine, and silicon carbide is 7:1.5:7, and the other steps remain unchanged.

[0040] Comparative Example 5

[0041] The method for preparing pulp with a new material formula described in Example 1 is different in that, in step 2, in the new composite fiber material, the mass ratio of metal titanium, metal magnesium, and modified glass fiber is 5:5:9, and the other steps remain unchanged.

[0042] Comparative Example 6

[0043] The method for preparing pulp with a new material formula described in Example 1 is different in that step 4 is omitted, and in step 6, 0.3-0.5%wt of sedimentation-modified glass fiber is added to the plant fiber slurry instead, and the other steps remain unchanged.

[0044] Comparative Example 7

[0045] The method for preparing pulp with a new material formula described in Example 1 is different in that step 4 is omitted, and in step 6, a composite fiber new material with a mass ratio of 2-3%wt is added to the plant fiber slurry, and the other steps remain unchanged.

[0046] The pulp obtained in Example 1 and Comparative Examples 1 to 7 was made into paper by the following process:

[0047] Pour the pulp into the pulp storage chamber, stir it evenly, open the valve of the continuous suction chamber, use a vacuum pump to pump water, peel off the paper in the pulp storage chamber, press it at 5MPa for 3min, and then dry it at 120℃ to obtain paper.

[0048] Experimental example

[0049] The same size paper (length 100mm, width 100mm) prepared in Example 1 and Comparative Examples 1 to 7 was placed in a space with an oxygen concentration of 50%, an ambient temperature of 130-140°C, a humidity of 70%, and a strength of 90μW / cm 2 The paper was irradiated with ultraviolet light, and samples were taken at different times of treatment. After cooling and drying, the tensile properties of the paper were tested using a tensile strength tester (Sweden L&MTH-1), and the tearing strength was tested using an Elmendorf tear tester (60-2600).

[0050] The results are shown in Table 1;

[0051] Table 1

[0052]

[0053]

[0054] It can be seen from the results in Table 1 that the paper made from the pulp prepared in Example 1 of the present invention can be placed in multiple harsh environments of high temperature, high humidity, high oxygen concentration and ultraviolet light for 240 hours and still maintain good tensile and tear resistance.

[0055] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention specification, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for preparing pulp with a new material formula, characterized in that: The following steps are involved: Step 1: preparing a silicon carbide dispersion solution; Step 2: Remove the oil stains on the surface of the glass fiber, add the glass fiber and polyethyleneimine into the silicon carbide dispersion solution, and make the polyethyleneimine and silicon carbide co-deposit on the surface of the glass fiber; Step 3: placing metal titanium and metal magnesium targets in a sputtering chamber of a sputtering device, placing the glass fiber that has been subjected to deposition modification treatment on a substrate opposite to the target, introducing an inert gas into the sputtering chamber, applying voltage and current to ionize the gas to form plasma, and the ions in the plasma bombard the titanium and magnesium targets under the action of the electric field, so that titanium and magnesium atoms are sputtered out from the surface of the target and deposited on the surface of the glass fiber, thereby obtaining a new composite fiber material for preparing pulp; Step 4: preparing plant fiber slurry, mixing plant fiber raw material, calcium hydroxide, anthraquinone, polyvinyl alcohol, and water in a mass ratio of 5-7: 0.2-1: 0.5-1: 0.3-0.5: 90-95, and performing homogenization to obtain plant fiber slurry; Step 5: Add 0.3-0.5%wt of the composite fiber new material to the plant fiber slurry, continue homogenizing, and obtain paper pulp.

2. The method for preparing pulp with a new material formula according to claim 1, characterized in that: Step 1 is specifically as follows: soaking the silicon carbide powder in hydrofluoric acid to remove impurities on the surface, then taking it out and adjusting the pH value to neutral, and finally drying it to ultrasonically disperse the treated silicon carbide powder and coupling agent in ethylene glycol to form a uniform silicon carbide dispersion solution.

3. The method for preparing pulp with a new material formula according to claim 1, characterized in that: In step 2, the mass ratio of glass fiber, polyethyleneimine and silicon carbide is 5-10:1-2:2-3.

4. The method for preparing pulp with a new material formula according to claim 1, characterized in that: In step 3, in the new composite fiber material, the mass ratio of metal titanium, metal magnesium, and modified glass fiber is 1-2:2-3:8-10.

5. The method for preparing pulp with a new material formula according to claim 1, characterized in that: In step 4, the homogenization pressure of the homogenization process is 40-50 MPa.

6. The method for preparing pulp with a new material formula according to claim 1, characterized in that: In step 5, the homogenization pressure of the homogenization process is 60-70 MPa.

7. The method for preparing pulp with a new material formula according to claim 1, characterized in that: The particle size of the new composite fiber material is less than 500μm.

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