High-strength antibacterial agilawood paper with agilawood smell and preparation method thereof

Abstract

The invention belongs to the technical field of agilawood paper preparation, and provides high-strength antibacterial agilawood paper with agilawood smell and a preparation method of the high-strength antibacterial agilawood paper. The agilawood paper comprises the following raw materials: agilawood pulp, stellera chamaejasme pulp, long fiber pulp, bamboo pulp, chitosan quaternary ammonium salt and microcrystalline cellulose. The mass ratio of the agilawood pulp to the stellera chamaejasme pulp to the long fiber pulp to the bamboo pulp is 1: (0.5-1.5): (0.5-1.5): (0.2-0.5); the mass of the chitosan quaternary ammonium salt and the mass of the microcrystalline cellulose are 0.5-2% and 0.1-0.5% of the mass of the agilawood pulp. The agilawood is directly pulped, the fragrance of agilawood is kept for a long time, the stellera chamaejasme pulp, the long-fiber pulp, the bamboo pulp, the chitosan quaternary ammonium salt and the microcrystalline cellulose are reasonably added, and the obtained agilawood paper is high in strength, good in writing and printing performance, good in corrosion and moth resistance, antibacterial performance and aging resistance and lasting in fragrance, has proper ink wetting property and whiteness, and is suitable for large-scale production. The economic value and the collection value of the agilawood paper are improved.

Description

Technical Field

[0001] The invention relates to the technical field of agarwood paper preparation, and in particular to high-strength antibacterial agarwood paper with agarwood odor and a preparation method thereof. Background Art

[0002] Agarwood is a precious spice and an important medicinal material. It has the effects of promoting qi and relieving pain, warming the middle and stopping vomiting, and relieving asthma. Agarwood is not a fragrant wood, but several trees that are damaged by nature and infected by fungi begin to produce fragrance. It takes three or four hundred years to produce the best. Agarwood has been listed as the top of all fragrances since ancient times because of its rarity and difficulty in obtaining. At present, there are two main types of paper preparation related to agarwood. One is papermaking with agarwood bark. Because there is no agarwood in the bark, it is difficult for the paper made to retain the fragrance of agarwood; the other is to use agarwood powder as an additive, and add agarwood powder to the carrier paper. Although the resulting paper has fragrance, it is far from pure agarwood paper. The agarwood paper prepared by the prior art has defects such as water permeability and light transmission, low strength, poor antibacterial properties, large dry and wet shrinkage, poor writing performance, and high storage conditions.

[0003] The paper made from wolfsbane roots has a certain degree of toxicity, making wolfsbane paper a skilled bodyguard for scriptures. There are countless scriptures preserved in Tibetan areas for hundreds or even thousands of years. The reason why they are not eaten by insects is that the toxicity of wolfsbane pulp makes insects and rats dare not approach the scriptures.

[0004] Therefore, it is of great significance to study and obtain an agarwood paper with agarwood and wolfsbane pulp as raw materials, which has the advantages of not being rotten by water stains, not being infested by insects, having a long-lasting fragrance, high strength, not being easily oxidized, and having good writing and printing properties. Summary of the invention

[0005] The purpose of the present invention is to provide a high-strength antibacterial agarwood paper with agarwood smell and a preparation method thereof in view of the deficiencies in the prior art.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0007] The invention provides a high-strength antibacterial agarwood paper with agarwood smell, the high-strength antibacterial agarwood paper comprises the following raw materials: agarwood pulp, wolfsbane pulp, long fiber pulp, bamboo pulp, chitosan quaternary ammonium salt, microcrystalline cellulose; the mass ratio of agarwood pulp, wolfsbane pulp, long fiber pulp and bamboo pulp is 1: 0.5-1.5: 0.5-1.5: 0.2-0.5; the mass of chitosan quaternary ammonium salt is 0.5-2% of the mass of agarwood pulp, and the mass of microcrystalline cellulose is 0.1-0.5% of the mass of agarwood pulp;

[0008] The preparation method of the agarwood pulp is as follows: the agarwood chips are steamed in a mixture of water and alkali and then crushed; or the agarwood chips are soaked in a mixture of water and alkali and then pulped.

[0009] Preferably, the long fiber pulp comprises one or more of mulberry bark pulp, mulberry bark pulp, hemp bark pulp and wicker fiber pulp.

[0010] Preferably, the beating degree of the agarwood pulp is 30-65°SR.

[0011] Preferably, the wolfsbane pulp has a pulp whiteness of 40-45% and a hardness of 12.6-12.8K.

[0012] Preferably, the mass ratio of the agarwood chips, water and alkali is 1:3-10:0.1-0.3; the alkali comprises one or more of sodium hydroxide, potassium hydroxide and calcium hydroxide.

[0013] Preferably, the cooking temperature is 50-170° C., and the cooking time is 3 h to 15 d.

[0014] Preferably, the immersion temperature is 50-90°C, and the immersion time is 1-5h; the refining comprises one-stage refining and two-stage refining, the slit of the one-stage refining is 0.8-1.2mm, and the slit of the two-stage refining is 0.3-0.5mm.

[0015] The present invention also provides a method for preparing the high-strength antibacterial agarwood paper having the smell of agarwood, comprising the following steps:

[0016] Agarwood pulp, wolfsbane pulp, long fiber pulp, bamboo pulp, chitosan quaternary ammonium salt and microcrystalline cellulose are mixed, and the mixture is successively papered, pressed and dehydrated, vacuum dehydrated and dried to obtain high-strength antibacterial agarwood paper with agarwood smell.

[0017] Preferably, the pressure of the squeezing dehydration is 0.4-0.6 MPa, and the time is 3-5 min; the vacuum degree of the vacuum dehydration is 6-10 kPa, and the time is 3-5 min; the temperature of the drying is 30-100° C., and the time is 10-80 min.

[0018] The beneficial effects of the present invention include the following:

[0019] 1) The present invention directly pulps agarwood to retain the fragrance of agarwood for a long time, and reasonably adds wolfsbane pulp, long fiber pulp, bamboo pulp, chitosan quaternary ammonium salt, and microcrystalline cellulose. The obtained agarwood paper has high strength, good writing and printing performance, good anticorrosion and moth-proofing, antibacterial and aging resistance, long-lasting fragrance, suitable ink-wetting property and whiteness, thereby improving the economic value and collection value of the agarwood paper.

[0020] 2) Wolfberry pulp has good anti-corrosion and anti-insect properties, good physical strength and aging resistance, antibacterial and moisture-proof properties, and long fiber pulp can improve strength; chitosan quaternary ammonium salt is water-soluble, plays a bonding role, improves bonding strength and has an antibacterial effect; microcrystalline cellulose has high crystallinity and small size, can fill in the gaps between fibers, improve bonding strength, and improve writing and printing properties.

[0021] 3) The preparation process of the present invention is simple, the fragrance retention rate is high, and the fragrance is long-lasting; the agarwood paper of the present invention is used in many fields such as ancient book reproduction, ancient book and painting restoration, calligraphy and painting, woodcut watermarks, book rubbings and cultural crafts. DETAILED DESCRIPTION

[0022] The invention provides a high-strength antibacterial agarwood paper with agarwood smell, the high-strength antibacterial agarwood paper comprises the following raw materials: agarwood pulp, wolfsbane pulp, long fiber pulp, bamboo pulp, chitosan quaternary ammonium salt, microcrystalline cellulose; the mass ratio of agarwood pulp, wolfsbane pulp, long fiber pulp and bamboo pulp is 1: 0.5-1.5: 0.5-1.5: 0.2-0.5; the mass of chitosan quaternary ammonium salt is 0.5-2% of the mass of agarwood pulp, and the mass of microcrystalline cellulose is 0.1-0.5% of the mass of agarwood pulp;

[0023] The preparation method of the agarwood pulp is as follows: the agarwood chips are steamed in a mixture of water and alkali and then crushed; or the agarwood chips are soaked in a mixture of water and alkali and then pulped.

[0024] In the present invention, the mass ratio of agarwood pulp, wolfsbane pulp, long fiber pulp and bamboo pulp is preferably 1:0.8-1.2:0.8-1.2:0.3-0.4, and more preferably 1:1:1:0.35; the mass of chitosan quaternary ammonium salt is preferably 0.5-2% of the mass of agarwood pulp, more preferably 0.8-1.6%, more preferably 1-1.2%, and the mass of microcrystalline cellulose is preferably 0.1-0.5% of the mass of agarwood pulp, more preferably 0.2-0.4%, and more preferably 0.3%.

[0025] In the present invention, the size of the agarwood chips is preferably 2-5 cm×2-5 cm×1-3 cm.

[0026] In the present invention, the long fiber pulp preferably comprises one or more of mulberry bark pulp, mulberry bark pulp, hemp bark pulp and wisteria fiber pulp.

[0027] In the present invention, the beating degree of the agarwood pulp is preferably 30 to 65°SR, more preferably 35 to 60°SR, and even more preferably 40 to 50°SR.

[0028] In the present invention, the whiteness of the wolfberry pulp is preferably 40-45%, more preferably 41-44%, more preferably 42-43%, and the hardness is preferably 12.6-12.8K, more preferably 12.7K.

[0029] In the present invention, the mass ratio of the agarwood chips, water and alkali is preferably 1:3-10:0.1-0.3, more preferably 1:4-8:0.15-0.25, and more preferably 1:5-7:0.2; the alkali preferably comprises one or more of sodium hydroxide, potassium hydroxide and calcium hydroxide.

[0030] In the present invention, the cooking temperature is preferably 50 to 170°C, more preferably 70 to 150°C, more preferably 90 to 120°C, and the cooking time is preferably 3h to 15d, more preferably 10h to 12d, more preferably 15h to 10d.

[0031] In the present invention, the immersion temperature is preferably 50-90°C, more preferably 60-80°C, more preferably 70°C, the immersion time is preferably 1-5h, more preferably 2-4h, more preferably 3h; the refining preferably comprises one-stage refining and two-stage refining, the slit of the one-stage refining is preferably 0.8-1.2mm, more preferably 0.9-1.1mm, more preferably 1mm, the slit of the two-stage refining is preferably 0.3-0.5mm, more preferably 0.35-0.45mm, more preferably 0.4mm.

[0032] In the present invention, the microcrystalline cellulose is preferably NF type microcrystalline cellulose, and the molecular formula of NF type microcrystalline cellulose is C 12 H 22 O 11 NF type microcrystalline cellulose has excellent suspension and fluidity, and can improve the consistency and stability of paper.

[0033] In the present invention, the chitosan quaternary ammonium salt is preferably N,N,N-trimethyl chitosan and / or hydroxypropyltrimethylammonium chloride chitosan.

[0034] The present invention also provides a method for preparing the high-strength antibacterial agarwood paper having the smell of agarwood, comprising the following steps:

[0035] Agarwood pulp, wolfsbane pulp, long fiber pulp, bamboo pulp, chitosan quaternary ammonium salt and microcrystalline cellulose are mixed, and the mixture is successively papered, pressed and dehydrated, vacuum dehydrated and dried to obtain high-strength antibacterial agarwood paper with agarwood smell.

[0036] In the present invention, the pressure of the squeezing dehydration is preferably 0.4-0.6MPa, more preferably 0.45-0.55MPa, more preferably 0.5MPa, and the time of the squeezing dehydration is preferably 3-5min, more preferably 4min; the vacuum degree of the vacuum dehydration is preferably 6-10kPa, more preferably 7-9kPa, more preferably 8kPa, and the time of the vacuum dehydration is preferably 3-5min, more preferably 4min; the drying temperature is preferably 30-100°C, more preferably 50-90°C, more preferably 60-80°C; the drying time is preferably 10-80min, more preferably 15-60min, more preferably 30-40min.

[0037] The technical solutions provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0038] In the embodiments and comparative examples, the agarwood is peeled, the trunk is retained, and the agarwood pieces having a size of 2-3 cm×2-3 cm×1-2 cm are cut;

[0039] The long fiber pulp has a pulp whiteness of 75%, a beating degree of 52°SR, and a hardness of 5.92K; the wolfberry pulp has a pulp whiteness of 42% and a hardness of 12.7K; the microcrystalline cellulose is NF type microcrystalline cellulose;

[0040] The model of Walle beater is IMT-VL01.

[0041] Example 1

[0042] Agarwood chips were added to a mixture of distilled water and sodium hydroxide and cooked at 170°C for 3 hours. The mass ratio of agarwood chips, distilled water and sodium hydroxide was 1:3:0.3. The obtained slurry was crushed and dispersed into pulp. The beating degree was increased to 45°SR by a Wall-E pulper to obtain agarwood pulp.

[0043] Agarwood pulp, wolfsbane pulp, mulberry pulp, bamboo pulp, chitosan quaternary ammonium salt (hydroxypropyltrimethylammonium chloride chitosan) and microcrystalline cellulose are evenly mixed, the mass ratio of agarwood pulp, wolfsbane pulp, mulberry pulp and bamboo pulp is 1:1:1:0.3, the mass of chitosan quaternary ammonium salt is 2% of the mass of agarwood pulp, the mass of microcrystalline cellulose is 0.1% of the mass of agarwood pulp, and the uniform mixture is papermade to obtain wet paper; the wet paper is pressed and dehydrated at a pressure of 0.5MPa for 4min, then vacuum dehydrated at a vacuum degree of 8kPa for 4min, and finally naturally dried at 30°C for 80min to obtain high-strength antibacterial agarwood paper with agarwood smell.

[0044] Example 2

[0045] Agarwood chips were added to a mixture of distilled water and potassium hydroxide and cooked at 150°C for 10 hours. The mass ratio of agarwood chips, distilled water and potassium hydroxide was 1:5:0.25. The obtained slurry was crushed and dispersed into pulp. The beating degree was increased to 30°SR by a Wall-E pulper to obtain agarwood pulp.

[0046] Agarwood pulp, wolfsbane pulp, mulberry pulp, bamboo pulp, chitosan quaternary ammonium salt (N,N,N-trimethyl chitosan) and microcrystalline cellulose are evenly mixed, the mass ratio of agarwood pulp, wolfsbane pulp, mulberry pulp and bamboo pulp is 1:1.2:1.2:0.2, the mass of chitosan quaternary ammonium salt is 1.5% of the mass of agarwood pulp, and the mass of microcrystalline cellulose is 0.4% of the mass of agarwood pulp. The uniform mixture is papermade to obtain wet paper; the wet paper is pressed and dehydrated at a pressure of 0.4MPa for 5min, then vacuum dehydrated at a vacuum degree of 7kPa for 5min, and finally dried at 60°C for 60min to obtain high-strength antibacterial agarwood paper with agarwood smell.

[0047] Example 3

[0048] Agarwood chips were added to a mixture of distilled water and calcium hydroxide and cooked at 50°C for 15 days. The mass ratio of agarwood chips, distilled water and calcium hydroxide was 1:10:0.15. The obtained slurry was crushed and dispersed into pulp. The beating degree was increased to 65°SR by a Wall-E beater to obtain agarwood pulp.

[0049] Agarwood pulp, wolfsbane pulp, hemp pulp, bamboo pulp, chitosan quaternary ammonium salt (hydroxypropyltrimethylammonium chloride chitosan) and microcrystalline cellulose are evenly mixed, the mass ratio of agarwood pulp, wolfsbane pulp, hemp pulp and bamboo pulp is 1:0.8:1.5:0.4, the mass of chitosan quaternary ammonium salt is 0.8% of the mass of agarwood pulp, the mass of microcrystalline cellulose is 0.3% of the mass of agarwood pulp, and the uniform mixture is papermade to obtain wet paper; the wet paper is pressed and dehydrated at a pressure of 0.6MPa for 3min, then vacuum dehydrated at a vacuum degree of 9kPa for 3min, and finally dried at 95°C for 15min to obtain high-strength antibacterial agarwood paper with agarwood smell.

[0050] Example 4

[0051] Agarwood chips were added to a mixture of distilled water and sodium hydroxide and cooked at 80°C for 10 days. The mass ratio of agarwood chips, distilled water and sodium hydroxide was 1:5:0.2. The obtained slurry was crushed and dispersed into pulp. The beating degree was increased to 55°SR by a Wall-E pulper to obtain agarwood pulp.

[0052] Agarwood pulp, wolfsbane pulp, wisteria fiber pulp, bamboo pulp, chitosan quaternary ammonium salt (hydroxypropyltrimethylammonium chloride chitosan) and microcrystalline cellulose are evenly mixed, the mass ratio of agarwood pulp, wolfsbane pulp, wisteria fiber pulp and bamboo pulp is 1:1:0.8:0.5, the mass of chitosan quaternary ammonium salt is 0.6% of the mass of agarwood pulp, the mass of microcrystalline cellulose is 0.2% of the mass of agarwood pulp, and the uniform mixture is papermade to obtain wet paper; the wet paper is pressed and dehydrated at a pressure of 0.5MPa for 4min, then vacuum dehydrated at a vacuum degree of 10kPa for 3min, and finally dried at 90°C for 15min to obtain high-strength antibacterial agarwood paper with agarwood smell.

[0053] Example 5

[0054] Agarwood chips were added to a mixture of distilled water and sodium hydroxide and immersed at 50°C for 5 hours. The mass ratio of agarwood chips, distilled water and sodium hydroxide was 1:3:0.1. The softened chips were pulped after immersion. The slit of the first stage of pulping was 1 mm, and the slit of the second stage of pulping was 0.4 mm. The beating degree was increased to 45°SR by a Wall-E pulper to obtain agarwood pulp.

[0055] Agarwood pulp, wolfsbane pulp, mulberry pulp, bamboo pulp, chitosan quaternary ammonium salt (hydroxypropyltrimethylammonium chloride chitosan) and microcrystalline cellulose are evenly mixed, the mass ratio of agarwood pulp, wolfsbane pulp, mulberry pulp and bamboo pulp is 1:1:1:0.3, the mass of chitosan quaternary ammonium salt is 1.5% of the mass of agarwood pulp, the mass of microcrystalline cellulose is 0.3% of the mass of agarwood pulp, and the uniform mixture is papermade to obtain wet paper; the wet paper is pressed and dehydrated at a pressure of 0.5MPa for 4min, then vacuum dehydrated at a vacuum degree of 8kPa for 4min, and finally dried at 90°C for 15min to obtain high-strength antibacterial agarwood paper with agarwood smell.

[0056] Example 6

[0057] Agarwood chips were added to a mixture of distilled water and sodium hydroxide and immersed at 70°C for 3 hours. The mass ratio of agarwood chips, distilled water and sodium hydroxide was 1:5:0.2. The softened chips were pulped after immersion. The slit of the first stage of pulping was 0.9 mm, and the slit of the second stage of pulping was 0.3 mm. The beating degree was increased to 55°SR by a Wall-E pulper to obtain agarwood pulp.

[0058] Agarwood pulp, wolfsbane pulp, hemp pulp, bamboo pulp, chitosan quaternary ammonium salt (hydroxypropyltrimethylammonium chloride chitosan) and microcrystalline cellulose are evenly mixed, the mass ratio of agarwood pulp, wolfsbane pulp, hemp pulp and bamboo pulp is 1:0.5:1.5:0.2, the mass of chitosan quaternary ammonium salt is 1% of the mass of agarwood pulp, the mass of microcrystalline cellulose is 0.2% of the mass of agarwood pulp, and the uniform mixture is papermade to obtain wet paper; the wet paper is pressed and dehydrated at a pressure of 0.5MPa for 4min, then vacuum dehydrated at a vacuum degree of 8kPa for 4min, and finally dried at 80°C for 40min to obtain high-strength antibacterial agarwood paper with agarwood smell.

[0059] Example 7

[0060] Agarwood chips were added to a mixture of distilled water and sodium hydroxide and immersed at 90°C for 1 hour. The mass ratio of agarwood chips, distilled water and sodium hydroxide was 1:10:0.3. The softened chips were pulped after immersion. The slit of the first stage of pulping was 0.1 mm, and the slit of the second stage of pulping was 0.5 mm. The beating degree was increased to 40°SR by a Wall-E pulper to obtain agarwood pulp.

[0061] Agarwood pulp, wolfsbane pulp, mulberry pulp, bamboo pulp, chitosan quaternary ammonium salt (hydroxypropyltrimethylammonium chloride chitosan) and microcrystalline cellulose are evenly mixed, the mass ratio of agarwood pulp, wolfsbane pulp, mulberry pulp and bamboo pulp is 1:0.8:1:0.4, the mass of chitosan quaternary ammonium salt is 0.6% of the mass of agarwood pulp, the mass of microcrystalline cellulose is 0.4% of the mass of agarwood pulp, and the uniform mixture is papermade to obtain wet paper; the wet paper is pressed and dehydrated at a pressure of 0.5MPa for 4min, then vacuum dehydrated at a vacuum degree of 7kPa for 4min, and finally dried at 60°C for 60min to obtain high-strength antibacterial agarwood paper with agarwood smell.

[0062] Comparative Example 1

[0063] The chitosan quaternary ammonium salt in Example 1 was omitted, and other conditions were the same as in Example 1.

[0064] Comparative Example 2

[0065] The wolfberry paste in Example 1 was omitted, and other conditions were the same as those in Example 1.

[0066] Comparative Example 3

[0067] The microcrystalline cellulose in Example 1 was omitted, and other conditions were the same as those in Example 1.

[0068] Comparative Example 4

[0069] The chitosan quaternary ammonium salt in Example 1 was replaced by carboxymethyl cellulose, and other conditions were the same as in Example 1.

[0070] Comparative Example 5

[0071] The preparation of the agarwood pulp in Example 1 was omitted and the agarwood pulp in Example 1 was replaced by bamboo pulp. The mass ratio of wolfsbane pulp, mulberry bark pulp and bamboo pulp was 1:1:1.3, and other conditions were the same as in Example 1.

[0072] Comparative Example 6

[0073] The preparation of the agarwood pulp in Example 1 was omitted, and the agarwood pulp in Example 1 was replaced by mulberry pulp. The mass ratio of wolfsbane pulp, mulberry pulp and bamboo pulp was 1:2:0.3, and other conditions were the same as in Example 1.

[0074] Comparative Example 7

[0075] The preparation of the agarwood pulp in Example 1 was omitted, and the agarwood pulp in Example 1 was replaced by wolfsbane pulp. The mass ratio of wolfsbane pulp, mulberry pulp and bamboo pulp was 2:1:0.3, and other conditions were the same as in Example 1.

[0076] The performance tests of the papers of Examples 1 to 7 and Comparative Examples 1 to 7 were performed, and the results are shown in Table 1, wherein the paper surface density was tested according to GB / T 451.2-2002 "Determination of the Basis Weight of Paper and Paperboard", and the antibacterial rate was tested according to FZ / T 73023-2006 "Antibacterial Knitwear". The higher the antibacterial rate, the better the antibacterial performance. The tensile index refers to the maximum tension that a paper of unit width can withstand before breaking under a unit basis weight. The tensile index is tested according to GB / T 12914-2008 "Determination of the Tensile Strength of Paper and Paperboard". The higher the tensile index, the higher the fiber strength and bonding strength.

[0077] Table 1 Paper performance test results of the embodiments and comparative examples

[0078]

[0079]

[0080] As shown in Table 1, adding chitosan quaternary ammonium salt helps to improve the antibacterial rate of paper, and chitosan quaternary ammonium salt can play a role as an adhesive, effectively improving the fiber bonding strength. In Comparative Example 1, chitosan quaternary ammonium salt was not added, and the antibacterial rate and tensile index of paper were significantly reduced. Wolfberry pulp itself has an antibacterial effect, and the fiber length is slightly longer than that of agarwood pulp, but the fiber is thicker, so in Comparative Example 2, when wolfberry pulp is not added, the antibacterial rate and tensile index are reduced. Microcrystalline cellulose is smaller in size and can be filled between fibers to improve the bonding strength. At the same time, due to the increase in light reflection, the optical properties of paper are improved. The tensile index of paper without adding microcrystalline cellulose in Comparative Example 3 is reduced. Since carboxymethyl cellulose can improve the fiber bonding strength, but does not have antibacterial properties, although the strength index can be maintained after comparative example 4 uses carboxymethyl cellulose to replace chitosan quaternary ammonium salt, the antibacterial performance is reduced.

[0081] Comparative Examples 5, 6, and 7 only use bamboo pulp, mulberry pulp, and wolfsbane pulp, but no agarwood pulp, so they have no fragrance after being placed for one year. Bamboo fiber is short and has poor paper-making performance; mulberry pulp fiber is long and has good paper-making performance; wolfsbane fiber is between the two and has fair paper-making performance; but wolfsbane fiber itself is antibacterial, and combined with the effect of chitosan quaternary ammonium salt, comparative example 7 has a better antibacterial effect.

[0082] The high-strength antibacterial agarwood paper with agarwood smell prepared by the present invention has excellent comprehensive quality, fine paper quality, controllable ink wetting effect, good antibacterial performance, strong paper tensile strength and lasting fragrance.

[0083] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A high-strength antibacterial agarwood paper with agarwood smell, characterized in that: The high-strength antibacterial agarwood paper contains the following raw materials: agarwood pulp, wolfsbane pulp, long fiber pulp, bamboo pulp, chitosan quaternary ammonium salt, and microcrystalline cellulose; the mass ratio of agarwood pulp, wolfsbane pulp, long fiber pulp and bamboo pulp is 1: 0.5-1.5: 0.5-1.5: 0.2-0.5; the mass of chitosan quaternary ammonium salt is 0.5-2% of the mass of agarwood pulp, and the mass of microcrystalline cellulose is 0.1-0.5% of the mass of agarwood pulp; The preparation method of the agarwood pulp is as follows: the agarwood chips are steamed in a mixture of water and alkali and then crushed; or the agarwood chips are soaked in a mixture of water and alkali and then pulped.

2. The high-strength antibacterial agarwood paper with agarwood smell according to claim 1, characterized in that: The long fiber pulp comprises one or more of mulberry bark pulp, mulberry bark pulp, hemp bark pulp and wicker fiber pulp.

3. The high-strength antibacterial agarwood paper with agarwood smell according to claim 1 or 2, characterized in that: The beating degree of the agarwood pulp is 30-65°SR.

4. The high-strength antibacterial agarwood paper with agarwood smell according to claim 3, characterized in that: The wolfberry pulp has a pulp whiteness of 40-45% and a hardness of 12.6-12.8K.

5. The high-strength antibacterial agarwood paper with agarwood smell according to claim 1, characterized in that: The mass ratio of the agarwood chips, water and alkali is 1:3-10:0.1-0.3; the alkali comprises one or more of sodium hydroxide, potassium hydroxide and calcium hydroxide.

6. The high-strength antibacterial agarwood paper with agarwood smell according to claim 1 or 5, characterized in that: The cooking temperature is 50-170° C., and the cooking time is 3 hours to 15 days.

7. The high-strength antibacterial agarwood paper with agarwood smell according to claim 1 or 5, characterized in that: The immersion temperature is 50-90° C., and the immersion time is 1-5 hours. The refining comprises one-stage refining and two-stage refining, the slit of the one-stage refining is 0.8-1.2 mm, and the slit of the two-stage refining is 0.3-0.5 mm.

8. The method for preparing the high-strength antibacterial agarwood paper having the smell of agarwood according to any one of claims 1 to 7, characterized in that: The following steps are included: Agarwood pulp, wolfsbane pulp, long fiber pulp, bamboo pulp, chitosan quaternary ammonium salt and microcrystalline cellulose are mixed, and the mixture is successively papered, pressed and dehydrated, vacuum dehydrated and dried to obtain high-strength antibacterial agarwood paper with agarwood smell.

9. The preparation method according to claim 8, characterized in that: The pressure of the squeezing dehydration is 0.4-0.6 MPa, and the time is 3-5 min; the vacuum degree of the vacuum dehydration is 6-10 kPa, and the time is 3-5 min; the temperature of the drying is 30-100° C., and the time is 10-80 min.

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