A good wear-resisting impregnated film paper and its production process

Abstract

The present application relates to the technical field of decorative paper, and proposes an impregnated film paper with good wear resistance and a production process thereof.The impregnated film paper with good wear resistance comprises a base paper layer and a film layer, and the raw material of the film layer comprises the following components in parts by mass: 100 parts of urea-formaldehyde resin, 5-10 parts of filler, 0.4-0.7 parts of ammonium salt, 0.1-0.4 parts of buffer, 0.1-0.3 parts of polyvinyl alcohol, 0.5-7 parts of nitrile-based compound, 0.1-0.3 parts of surfactant, and 10-20 parts of water; the nitrile-based compound comprises a compound containing one nitrile group and / or a compound containing two or more nitrile groups.Through the above technical solution, the problem of poor wear resistance of the impregnated film paper in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of decorative paper technology, specifically to an impregnated paper with good abrasion resistance and its production process. Background Technology

[0002] With the development of society, humans began to use chemical methods to process paper into various decorative materials. The prepared materials not only have a smooth and glossy surface and beautiful and diverse patterns, but also have good water resistance, heat resistance and corrosion resistance. When they are bonded to the surface of wood substrates, their service life can be extended and the product can be added value.

[0003] Impregnated paper, also known as impregnated paper, is made by impregnating base paper with a thermosetting synthetic resin and then drying it to allow the solvent to evaporate. In use, several sheets can be laminated together to form a decorative panel; alternatively, they can be directly heat-pressed onto a wood substrate to form a surface bonding layer. It is widely used in construction, interior decoration, furniture manufacturing, and gift packaging. The abrasion resistance of impregnated paper directly affects its decorative, usability, and durability; therefore, improving the abrasion resistance of impregnated paper is a technical challenge that urgently needs to be addressed by those skilled in the art. Summary of the Invention

[0004] This invention proposes an impregnated paper with good abrasion resistance and its production process, which solves the problem of poor abrasion resistance of impregnated paper in related technologies.

[0005] The technical solution of the present invention is as follows:

[0006] A wear-resistant impregnated paper includes a base paper layer and an adhesive film layer. The raw materials of the adhesive film layer include the following components in parts by weight: 100 parts urea-formaldehyde resin, 5-10 parts filler, 0.4-0.7 parts ammonium salt, 0.1-0.4 parts buffer, 0.1-0.3 parts polyvinyl alcohol, 0.5-7 parts nitrile compound, 0.1-0.3 parts surfactant, and 10-20 parts water.

[0007] The nitrile compounds include compounds containing one nitrile group and / or compounds containing two or more nitrile groups.

[0008] As a further technical solution, the surfactant is OP-10.

[0009] As a further technical solution, the mass ratio of the urea-formaldehyde resin to the nitrile compound is 100:1~5.

[0010] As a further technical solution, the nitrile compound includes compounds containing one nitrile group in a mass ratio of 1:2 to 2:1 and compounds containing two or more nitrile groups.

[0011] This invention limits the nitrile compounds to compounds containing one nitrile group and compounds containing two or more nitrile groups in a mass ratio of 1:2 to 2:1. By using compounds containing one nitrile group to block the active hydroxymethyl group in urea-formaldehyde resin, the degree of crosslinking is reduced. At the same time, by using compounds containing two or more nitrile groups to react with the active hydroxymethyl group in urea-formaldehyde resin, a flexible structure is introduced into the crosslinking structure, ensuring the degree of crosslinking and achieving a balance between the brittleness and toughness of the material, thereby further improving the abrasion resistance and tensile strength of the impregnated paper.

[0012] As a further technical solution, the compound containing two or more nitrile groups can be any compound containing two or more nitrile groups, preferably one of adiponitrile, 4-cyanohepanisonitrile, and 1,1,3,3-propanetetramethylnitrile.

[0013] As a further technical solution, the compound containing two or more nitrile groups is a compound containing three nitrile groups.

[0014] As a further technical solution, the compound containing three nitrile groups is 4-cyanohepanisole.

[0015] As a further technical solution, the compound containing a nitrile group includes one or both of 2-methoxybenzonitrile and 4-methoxyphenylacetonitrile.

[0016] As a further technical solution, the filler includes one or more of calcium carbonate, silica, and diatomaceous earth.

[0017] As a further technical solution, the ammonium salt includes one or more of ammonium sulfate, ammonium nitrate, and ammonium chloride.

[0018] As a further technical solution, the buffer includes one or more of sodium dihydrogen carbonate, sodium bicarbonate, and sodium carbonate.

[0019] This invention also proposes a production process for impregnated paper with good abrasion resistance, comprising the following steps:

[0020] S1. Mix the components in the specified mass fractions evenly to obtain an impregnation solution;

[0021] S2. The base paper is immersed in the impregnation solution and cured to obtain impregnated film paper.

[0022] As a further technical solution, the curing temperature in S2 is 95~110℃ and the curing time is 80~100s.

[0023] The working principle and beneficial effects of this invention are as follows:

[0024] This invention adds a compound containing one nitrile group and / or a compound containing two or more nitrile groups. By utilizing the reaction of the nitrile group with the hydroxymethyl group in urea-formaldehyde resin, the problem of high brittleness of urea-formaldehyde resin is improved, thereby greatly improving the abrasion resistance and tensile strength of the impregnated paper. This solves the problem of poor abrasion resistance of impregnated paper in the prior art and achieves the effect of improving the abrasion resistance and tensile strength of impregnated paper. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0026] The parameters of the raw materials in the following examples and comparative examples are as follows:

[0027] The urea-formaldehyde resin is urea-formaldehyde resin 681, with a solid content of 45-50 wt%.

[0028] Polyvinyl alcohol is polyvinyl alcohol 2488;

[0029] The particle size of diatomaceous earth, calcium carbonate, and silicon dioxide is 1250 mesh.

[0030] Example 1

[0031] S1. Heat 15 parts of water to 45°C, add 0.2 parts of polyvinyl alcohol, 0.5 parts of ammonium chloride, 0.25 parts of sodium bicarbonate, 8 parts of diatomaceous earth, 0.2 parts of OP-10, and 0.5 parts of 4-methoxyphenylacetonitrile. Stir until well mixed, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0032] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 100°C for 90 seconds to obtain the impregnated film paper.

[0033] Example 2

[0034] S1. Heat 10 parts of water to 45°C, add 0.1 parts of polyvinyl alcohol, 0.4 parts of ammonium nitrate, 0.1 parts of sodium carbonate, 5 parts of calcium carbonate, 0.1 parts of OP-10, and 0.5 parts of 4-methoxyphenylacetonitrile. Stir until homogeneous, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0035] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 95°C for 100 seconds to obtain the impregnated film paper.

[0036] Example 3

[0037] S1. Heat 20 parts of water to 45°C, add 0.3 parts of polyvinyl alcohol, 0.7 parts of ammonium sulfate, 0.4 parts of sodium dihydrogen carbonate, 10 parts of silicon dioxide, 0.3 parts of OP-10, and 0.5 parts of 2-methoxybenzonitrile. Stir until homogeneous, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0038] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 110℃ for 80 seconds to obtain the impregnated film paper.

[0039] Example 4

[0040] S1. Heat 15 parts of water to 45°C, add 0.2 parts of polyvinyl alcohol, 0.5 parts of ammonium chloride, 0.25 parts of sodium bicarbonate, 8 parts of diatomaceous earth, 0.2 parts of OP-10, and 1 part of 4-methoxyphenylacetonitrile. Stir well, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0041] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 100°C for 90 seconds to obtain the impregnated film paper.

[0042] Example 5

[0043] S1. Heat 15 parts of water to 45°C, add 0.2 parts of polyvinyl alcohol, 0.5 parts of ammonium chloride, 0.25 parts of sodium bicarbonate, 8 parts of diatomaceous earth, 0.2 parts of OP-10, and 3 parts of 4-methoxyphenylacetonitrile. Stir well, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0044] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 100°C for 90 seconds to obtain the impregnated film paper.

[0045] Example 6

[0046] S1. Heat 15 parts of water to 45°C, add 0.2 parts of polyvinyl alcohol, 0.5 parts of ammonium chloride, 0.25 parts of sodium bicarbonate, 8 parts of diatomaceous earth, 0.2 parts of OP-10, and 5 parts of 4-methoxyphenylacetonitrile. Stir well, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0047] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 100°C for 90 seconds to obtain the impregnated film paper.

[0048] Example 7

[0049] S1. Heat 15 parts of water to 45°C, add 0.2 parts of polyvinyl alcohol, 0.5 parts of ammonium chloride, 0.25 parts of sodium bicarbonate, 8 parts of diatomaceous earth, 0.2 parts of OP-10, and 7 parts of 4-methoxyphenylacetonitrile. Stir until well mixed, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0050] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 100°C for 90 seconds to obtain the impregnated film paper.

[0051] Example 8

[0052] S1. Heat 15 parts of water to 45°C, add 0.2 parts of polyvinyl alcohol, 0.5 parts of ammonium chloride, 0.25 parts of sodium bicarbonate, 8 parts of diatomaceous earth, 0.2 parts of OP-10, and 3 parts of adiponitrile. Stir well, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0053] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 100°C for 90 seconds to obtain the impregnated film paper.

[0054] Example 9

[0055] S1. Heat 15 parts of water to 45°C, add 0.2 parts of polyvinyl alcohol, 0.5 parts of ammonium chloride, 0.25 parts of sodium bicarbonate, 8 parts of diatomaceous earth, 0.2 parts of OP-10, and 3 parts of 4-cyanohepanisole. Stir until well mixed, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0056] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 100°C for 90 seconds to obtain the impregnated film paper.

[0057] Example 10

[0058] S1. Heat 15 parts of water to 45°C, add 0.2 parts of polyvinyl alcohol, 0.5 parts of ammonium chloride, 0.25 parts of sodium bicarbonate, 8 parts of diatomaceous earth, 0.2 parts of OP-10, and 3 parts of 1,1,3,3-propanetetracarbonyl nitrile. Stir until well mixed, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0059] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 100°C for 90 seconds to obtain the impregnated film paper.

[0060] Example 11

[0061] S1. Heat 15 parts of water to 45°C, add 0.2 parts of polyvinyl alcohol, 0.5 parts of ammonium chloride, 0.25 parts of sodium bicarbonate, 8 parts of diatomaceous earth, 0.2 parts of OP-10, 0.6 parts of 4-methoxyphenylacetonitrile, and 2.4 parts of 4-cyanohepanisole. Stir until homogeneous, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0062] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 100°C for 90 seconds to obtain the impregnated film paper.

[0063] Example 12

[0064] S1. Heat 15 parts of water to 45°C, add 0.2 parts of polyvinyl alcohol, 0.5 parts of ammonium chloride, 0.25 parts of sodium bicarbonate, 8 parts of diatomaceous earth, 0.2 parts of OP-10, 1 part of 4-methoxyphenylacetonitrile, and 2 parts of 4-cyanohepanisole. Stir until homogeneous, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0065] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 100°C for 90 seconds to obtain the impregnated film paper.

[0066] Example 13

[0067] S1. Heat 15 parts of water to 45°C, add 0.2 parts of polyvinyl alcohol, 0.5 parts of ammonium chloride, 0.25 parts of sodium bicarbonate, 8 parts of diatomaceous earth, 0.2 parts of OP-10, 1.5 parts of 4-methoxyphenylacetonitrile, and 1.5 parts of 4-cyanohepanisole. Stir until homogeneous, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0068] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 100°C for 90 seconds to obtain the impregnated film paper.

[0069] Example 14

[0070] S1. Heat 15 parts of water to 45°C, add 0.2 parts of polyvinyl alcohol, 0.5 parts of ammonium chloride, 0.25 parts of sodium bicarbonate, 8 parts of diatomaceous earth, 0.2 parts of OP-10, 2 parts of 4-methoxyphenylacetonitrile, and 1 part of 4-cyanohepanisole. Stir until well mixed, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0071] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 100°C for 90 seconds to obtain the impregnated film paper.

[0072] Example 15

[0073] S1. Heat 15 parts of water to 45°C, add 0.2 parts of polyvinyl alcohol, 0.5 parts of ammonium chloride, 0.25 parts of sodium bicarbonate, 8 parts of diatomaceous earth, 0.2 parts of OP-10, 2.4 parts of 4-methoxyphenylacetonitrile, and 0.6 parts of 4-cyanohepanisole. Stir until homogeneous, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0074] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 100°C for 90 seconds to obtain the impregnated film paper.

[0075] Comparative Example 1

[0076] S1. Heat 15 parts of water to 45°C, add 0.2 parts of polyvinyl alcohol, 0.5 parts of ammonium chloride, 0.25 parts of sodium bicarbonate, 8 parts of diatomaceous earth, and 0.2 parts of OP-10, stir evenly, then add 100 parts of urea-formaldehyde resin and continue stirring to obtain the impregnation solution.

[0077] S2. Impregnate the base paper in the impregnation solution to an impregnation amount of 45 g / m². 2 The paper is cured at 100°C for 90 seconds to obtain the impregnated film paper.

[0078] The impregnated films obtained in Examples 1-15 and Comparative Example 1 were tested for longitudinal wet tensile strength according to the method in GB / T 28995-2022. After being pasted onto a wood substrate, their abrasion resistance was tested. The test results are recorded in Table 1.

[0079] Table 1. Longitudinal wet tensile strength and abrasion resistance

[0080]

[0081] As can be seen from Table 1, the longitudinal wet tensile strength of the impregnated film paper provided by the present invention is above 8.3 N / 15 mm, and the abrasion resistance is above 6500 r, exhibiting good tensile strength and abrasion resistance.

[0082] Compared with Comparative Example 1, Examples 1-15 contain nitrile compounds, while Comparative Example 1 does not contain nitrile compounds. The longitudinal wet tensile strength and abrasion resistance of the impregnated paper obtained in Examples 1-15 are higher than those in Comparative Example 1, indicating that adding nitrile compounds can improve the tensile strength and abrasion resistance of impregnated paper.

[0083] Compared with the other examples, the nitrile compounds in Examples 12-14 include compounds containing one nitrile group and compounds containing two or more nitrile groups in a mass ratio of 1:2 to 2:1. Furthermore, the longitudinal wet tensile strength and abrasion resistance of the impregnated paper obtained in Examples 12-14 are better than those in the other examples, indicating that the tensile strength and abrasion resistance of the impregnated paper are best when the nitrile compounds are compounds containing one nitrile group and compounds containing two or more nitrile groups in a mass ratio of 1:2 to 2:1.

[0084] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A type of impregnated paper with good abrasion resistance, characterized in that, It includes a base paper layer and an adhesive film layer. The raw materials of the adhesive film layer include the following components in parts by weight: 100 parts urea-formaldehyde resin, 5-10 parts filler, 0.4-0.7 parts ammonium salt, 0.1-0.4 parts buffer, 0.1-0.3 parts polyvinyl alcohol, 0.5-7 parts nitrile compound, 0.1-0.3 parts surfactant, and 10-20 parts water. The nitrile compounds include compounds containing one nitrile group and / or compounds containing two or more nitrile groups.

2. The abrasion-resistant impregnated paper according to claim 1, characterized in that, The mass ratio of the urea-formaldehyde resin to the nitrile compound is 100:1~5.

3. The abrasion-resistant impregnated paper according to claim 2, characterized in that, The nitrile compounds include compounds containing one nitrile group in a mass ratio of 1:2 to 2:1 and compounds containing two or more nitrile groups.

4. The abrasion-resistant impregnated paper according to claim 3, characterized in that, The compound containing two or more nitrile groups is a compound containing three nitrile groups.

5. The abrasion-resistant impregnated paper according to claim 4, characterized in that, The compound containing three nitrile groups is 4-cyanohepanisole.

6. The abrasion-resistant impregnated paper according to claim 5, characterized in that, The compound containing a nitrile group includes one or both of 2-methoxybenzonitrile and 4-methoxyphenylacetonitrile.

7. The abrasion-resistant impregnated paper according to claim 1, characterized in that, The filler includes one or more of calcium carbonate, silicon dioxide, and diatomaceous earth.

8. The abrasion-resistant impregnated paper according to claim 1, characterized in that, The ammonium salt includes one or more of ammonium sulfate, ammonium nitrate, and ammonium chloride.

9. The abrasion-resistant impregnated paper according to claim 1, characterized in that, The buffer includes one or more of sodium dihydrogen carbonate, sodium bicarbonate, and sodium carbonate.

10. The production process of an impregnated paper with good abrasion resistance according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1. Mix the components in the specified mass fractions evenly to obtain an impregnation solution; S2. The base paper is immersed in the impregnation solution and cured to obtain impregnated film paper.

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