CN105695533A - Additive for preparation of cellulose and preparation method of cellulose - Google Patents
Additive for preparation of cellulose and preparation method of cellulose Download PDFInfo
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- CN105695533A CN105695533A CN201610130906.4A CN201610130906A CN105695533A CN 105695533 A CN105695533 A CN 105695533A CN 201610130906 A CN201610130906 A CN 201610130906A CN 105695533 A CN105695533 A CN 105695533A
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/14—Preparation of compounds containing saccharide radicals produced by the action of a carbohydrase (EC 3.2.x), e.g. by alpha-amylase, e.g. by cellulase, hemicellulase
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/002—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process employing compositions comprising microorganisms
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/10—Extraction of components naturally occurring in wood, cork, straw, cane or reed
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P2201/00—Pretreatment of cellulosic or lignocellulosic material for subsequent enzymatic treatment or hydrolysis
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Abstract
The invention relates to an additive for preparation of cellulose and a preparation method of the cellulose. The additive is prepared from raw materials in parts by weight as follows: 10-15 parts of saccharomycetes, 10-18 parts of urea, 12-18 parts of fatty alcohol-polyoxyethylene ether, 8-12 parts of alkylphenol ethoxylates, 12-18 parts of lipase, 3-8 parts of cellolase, 3-8 parts of aspergillus niger and 3-8 parts of a hydrolytic enzyme. The additive prepared from the combined raw materials and added to fibrous raw materials for preparation of cellulose has stable performance and can shorten the fiber preparation process, prepared fibers have a uniform length, the beating degree (degree sR), the quantitation (g/m<2>), the tightness (g/cm<3>), the whiteness (%ISO), the opaqueness (%), the fracture length (km), the tearing index (mN*m<2>/g), the bursting strength index (KPa*m<2>/g), the folding strength (times by 180 degrees), the average length (mm) of fibers and the average width of the fibers (mu m) all reach the standards, and the cellulose has higher performance.
Description
Technical field
The present invention relates to one and prepare cellulose additive and cellulose preparation method, belong to the wooden standby cellulose field of bamboo。
Background technology
In existing disclosed document, the patent documentation if U.S. Patent number in 1938 is US2179181 specifically discloses cellulose can not carry out chemical conversion under the help of tertiary amino oxides and dissolve。The patent document quoted also states that, by precipitating this cellulose solution, it is possible to produce cellulosic molded body, but this complex manufacturing, and the fibrous polymer degree produced is relatively low。
Existing bamboo and woods fiber preparation process uses substantial amounts of additive, but its complicated component, extremely unstable after in addition system, it is thus achieved that fibre length differs greatly。
Summary of the invention
The technical problem that the present invention is to solve is to provide one and prepares cellulose additive and cellulose preparation method。
The technical scheme is that one prepares cellulose additive, be made up of the raw material of following weight portion: yeast 10-15 part, carbamide 10-18 part, fatty alcohol-polyoxyethylene ether 12-18 part, alkylphenol polyoxyethylene 8-12 part, lipase 12-18 part, cellulase 3-8 part, aspergillus niger 3-8 part and hydrolytic enzyme 3-8 part。
The invention has the beneficial effects as follows: this combination raw materials be added in bamboo and woods fiber manufacturing process, the technical process that stable performance, shortening fiber make, and the fibre length prepared is homogeneous, final products viscosity, the degree of polymerization and tensile index, burst index, tear index, alpha-cellulose/%, beating degree/° SR, weight in wet base/g, whiteness/%ISO are all in critical field。
On the basis of technique scheme, the present invention can also do following improvement。
Present invention one as mentioned above prepares cellulose additive, further, it is made up of the raw material of following weight portion: 12 parts of yeast, 15 parts of carbamide, fatty alcohol-polyoxyethylene ether 15 parts, alkylphenol polyoxyethylene 10 parts, lipase 15 parts, cellulase 5 parts, aspergillus niger 5 parts and hydrolytic enzyme 5 parts。
Present invention one as mentioned above prepares cellulose additive, and further, described yeast is brewer yeast。
Present invention one as mentioned above prepares cellulose additive, and further, described brewer yeast is cereuisiae fermentum。
Present invention one as mentioned above prepares cellulose additive, further, it is characterised in that described hydrolytic enzyme is alpha-Amino acid ester hydrolase and/or α proteolytic enzyme。Further, described hydrolytic enzyme is the part by weight of alpha-Amino acid ester hydrolase and α proteolytic enzyme is 2: 1。
The present invention also provides for a kind of cellulose preparation method, comprises the following steps: step 1), fibrous raw material is pulverized；Preferably, described fibrous raw material is that woody, liana and/or herbaceous plant (containing wooden and non-wood) branch footpath are done。
Step 2) broken wall treatment, by step 1) pulverize after raw material add in pre-soaking pit, add water to flooding described raw material, in pre-soaking pit, add the above-mentioned one accounting for raw material weight 7%-30% again prepare cellulose additive, adjustment pH is 6.5-7.5, makes floccule through fiber devillicate machine after stirring 2-10 hour；Further, described fiber devillicate machine slit width 0.1-5mm；Preferred 0.2mm。
Step 3) to step 2) floccule made grinds and makes wadding fibrous element bio-pulp；Preferably being ground to floccule length and account for more than 90% less than 1mm, greatest length controls less than 3.5mm；
Step 4), cellulose can be obtained after dehydration sub-sieve。
The inventive method technique is simple, and 9 traditional step process flow processs are simplified and become four flow processs, and short and preparation the pulp freeness of preparation time increases, it is possible to increase the bond strength of paper。
The present invention is a kind of cellulose preparation method as mentioned above, and further, in whipping process, adding ultrasonic unit in pre-soaking pit surrounding carries out ultrasonic Treatment to raw material simultaneously。
Adopt and above-mentioned further provide the benefit that: owing to adding ultrasonic unit in pre-soaking pit surrounding, can realize the lignin in plant is produced fragmentation in course of reaction, accelerate pulping process。And due to ultrasonic Treatment, pulp freeness increases, it is possible to increase the bond strength of paper。
The present invention is a kind of cellulose preparation method as mentioned above, further, and the running parameter of described ultrasonic unit: ultrasound working frequency is higher than 20000Hz, and ultrasonic power is 600～24000W；The ultrasound wave working time is 5～20s, and the intermittent time is 5～20s, and circulation repeats to process。Lignin in plant is only produced fragmentation by the course of reaction that this frequency ultrasound processes, and cellulose does not cause damage, it is possible to retain fiber original length in plant and higher-strength；Reacted lignin derivative is attached on fiber, increases the specific surface area of fiber, is conducive to improving paper bond strength, reduces paper vertically and horizontally pulling force poor；Reduce Wastewater Pollutant；Improve resource utilization；Meanwhile produce chemical energy, produce a large amount of ozone aniones in container, fiber bleached。
The present invention is a kind of cellulose preparation method as mentioned above, further, step 2) described broken wall treatment amount of water is 1-3 times of described cellulose additive amount, temperature is 20-40 DEG C, makes floccule through Twin screw extruder after stirring 6-10 hour。It is preferably chosen water temperature and maintains 32 DEG C。
The present invention is a kind of cellulose preparation method as mentioned above, further, step 4) water after dehydration sub-sieve returns pre-soaking pit and re-uses。
Adopt and above-mentioned further provide the benefit that: the party prepare cellulose after process water can be directly entered in pre-soaking pit and again reuse, it is achieved realize Water Energy in the effect utilizing, reaching energy-saving and emission-reduction。
The present invention also provides for another kind of cellulose preparation method, further, comprises the following steps: step 1), fibrous raw material is pulverized；
Step 2) broken wall treatment, by step 1) pulverize after raw material add in pre-soaking pit, adding water to flooding described raw material, the more above-mentioned one adding the 4%-8% of raw material weight in pre-soaking pit prepares cellulose additive, adjusting pH is that 6.5-7.5 obtains mixed material；
Step 3), by step 2) mixed material make floccule by Twin screw extruder；It is highly preferred that described fiber devillicate machine slit width 0.1-5mm；Preferred 0.2mm；
Step 4) to step 3) floccule made grinds and makes wadding fibrous element bio-pulp；Preferably being ground to floccule length and account for more than 90% less than 1mm, greatest length controls less than 3.5mm；
Step 5), cellulose can be obtained after dehydration sub-sieve。
The present invention is a kind of cellulose preparation method as mentioned above, further, step 2) described broken wall treatment amount of water is 0.5-1.5 times of described cellulose additive amount, temperature is 20-40 DEG C, makes floccule through Twin screw extruder after stirring 6-10 hour。
The present invention is a kind of cellulose preparation method as mentioned above, further, step 5) water after dehydration sub-sieve returns pre-soaking pit and re-uses。
The present invention is a kind of cellulose preparation method as mentioned above, and further, described fibrous raw material is in any in wheat straw, Caulis et Folium Oryzae, bagasse, Eucalyptus, phragmites communis and bamboo or several mixing。
Accompanying drawing explanation
Fig. 1 is cellulosic distribution of lengths schematic diagram prepared by the present invention a kind of cellulose preparation method；
Fig. 2 is cellulosic width distribution schematic diagram prepared by the present invention a kind of cellulose preparation method；
Fig. 3 is cellulosic length and width degree distribution schematic diagram figure prepared by the present invention a kind of cellulose preparation method。
Detailed description of the invention
Below in conjunction with accompanying drawing, principles of the invention and feature being described, example is served only for explaining the present invention, is not intended to limit the scope of the present invention。
Fiber devillicate machine is chosen as the devillicate machine that Han Dynasty in Shandong Province Tong Aote Machinery Co., Ltd. manufactures in embodiments of the present invention；Twin screw extruder is extruder prepared by the Nanjing Ke Ruilong mechanical & electronic equipment corporation, Ltd produced。
The inventive method suitable fibers raw material has wheat straw, Caulis et Folium Oryzae, bagasse, Eucalyptus, phragmites communis and bamboo。
Embodiment 1
One of the present invention prepares cellulose additive, is made up of following raw material: cereuisiae fermentum 10kg, carbamide 10kg, fatty alcohol-polyoxyethylene ether 12kg, alkylphenol polyoxyethylene 8kg, lipase 12kg, cellulase 3kg, aspergillus niger 3kg and alpha-Amino acid ester hydrolase and α proteolytic enzyme 3kg。
Embodiment 2
One of the present invention prepares cellulose additive, is made up of following raw material: cereuisiae fermentum 15kg, carbamide 18kg, fatty alcohol-polyoxyethylene ether 18kg, alkylphenol polyoxyethylene 12kg, lipase 18kg, cellulase 8kg, aspergillus niger 8kg and α proteolytic enzyme 8kg。
Embodiment 3
One of the present invention prepares cellulose additive, is made up of following raw material: cereuisiae fermentum 10-kg, carbamide 18kg, fatty alcohol-polyoxyethylene ether 18kg, alkylphenol polyoxyethylene 8kg, lipase 12kg, cellulase 8kg, aspergillus niger 8kg and hydrolytic enzyme 3kg。
Embodiment 4
One of the present invention prepares cellulose additive, is made up of following raw material: cereuisiae fermentum 12kg, carbamide 16kg, fatty alcohol-polyoxyethylene ether 14kg, alkylphenol polyoxyethylene 10kg, lipase 10kg, cellulase 5kg, aspergillus niger 5kg and alpha-Amino acid ester hydrolase 5kg。
Embodiment 5
One of the present invention prepares cellulose additive, further, being made up of the raw material of following weight kg: cereuisiae fermentum 12kg, carbamide 15kg, fatty alcohol-polyoxyethylene ether 15kg, alkylphenol polyoxyethylene 10kg, lipase 15kg, cellulase 5kg, aspergillus niger 5kg and alpha-Amino acid ester hydrolase and α proteolytic enzyme mixt are 5kg, the part by weight of wherein said alpha-Amino acid ester hydrolase and α proteolytic enzyme is 2: 1。
Embodiment 6
One cellulose preparation method of the present invention, comprises the following steps: step 1), pollution-free bamboo willow raw material is pulverized；
Step 2) broken wall treatment, by step 1) pulverize after raw material add in pre-soaking pit, add water, the described coolant-temperature gage that adds is 32 DEG C, amount of water is 1 times of described cellulose additive amount, add in pre-soaking pit again raw material weight 15% embodiment 1 one kinds prepare cellulose additive, adjusting pH is 7, makes floccule through fiber devillicate machine after stirring 6 hours；Fiber devillicate machine slit width 0.2mm in the method。
Step 3) to step 2) floccule made grinds and makes floccule cellulose bio-pulp；
Above-mentioned floccule length accounts for more than 90% less than 1mm, and greatest length controls less than 3.5mm；
Step 4), cellulose can be obtained after dehydration sub-sieve；Water after dehydration sub-sieve returns pre-soaking pit and re-uses。
Cellulose prepared by the embodiment of the present invention 6 method, beating degree ° sR, quantitative g/m2, ' tightness g/cm3,, whiteness %ISO, opacity %, fracture length km, tear index mN m2/ g, burst index KPa m2/ g, folding strength (secondary 180 °), average fiber length mm, mean fibre width μm is as shown in table 1 below:
The cellulose Testing index of table 1. embodiment 6 preparation
| Testing index | Testing result |
| Beating degree ° sR | 43 |
| Quantitative g/m2 | 61.12 |
| Tightness g/cm3 | 0.78 |
| Whiteness %ISO | / |
| Opacity % | 80.88 |
| Fracture length km | 6.60 |
| Tear index mN m2/g | 3.53 |
| Burst index KPa m2/g | 4.12 |
| Folding strength (secondary 180 °) | 1102 |
| Average fiber length mm | 0.86 |
| Mean fibre width μm | 25.12 |
Embodiment 7
The present invention also provides for a kind of cellulose preparation method, comprises the following steps: step 1), wheat straw and phragmites communis mixed material are pulverized；
Step 2) broken wall treatment, by step 1) pulverize after raw material add in pre-soaking pit, add water, adding coolant-temperature gage is 20 DEG C, and amount of water is 3 times of described cellulose additive amount；
Add in pre-soaking pit again raw material weight 15% embodiment 2 preparation cellulose additive, adjusting pH is 6.5, making floccule through devillicate machine after stirring 2 hours, in whipping process, adding ultrasonic unit in pre-soaking pit surrounding carries out ultrasonic Treatment to raw material simultaneously；Described fiber devillicate machine slit width 0.2mm。
In the method, ultrasound working frequency is 80KHz, and ultrasonic power is 24000W；The ultrasound wave working time is 20s, and the intermittent time is 20s, and circulation repeats to process。
Step 3) to step 2) floccule made grinds and makes floccule cellulose bio-pulp；
Above-mentioned floccule length accounts for more than 90% less than 1mm, and greatest length controls less than 3.5mm；
Step 4), cellulose can be obtained after dehydration sub-sieve；Water after dehydration sub-sieve returns pre-soaking pit and re-uses。
Cellulose prepared by the embodiment of the present invention 7 method, beating degree ° sR, quantitative g/m2, ' tightness g/cm3,, whiteness %ISO, opacity %, fracture length km, tear index mN m2/ g, burst index KPa m2/ g, folding strength (secondary 180 °), average fiber length mm, mean fibre width μm is as shown in table 2 below:
The cellulose Testing index of table 2. embodiment 7 preparation
Embodiment 8
The present invention also provides for a kind of cellulose preparation method, comprises the following steps: step 1), bagasse raw material is pulverized；
Step 2) broken wall treatment, by step 1) pulverize after raw material add in pre-soaking pit, add water；It is 32 DEG C that described broken wall treatment adds coolant-temperature gage, and amount of water is 1.5 times of described cellulose additive amount；
Add in pre-soaking pit raw material weight 10% the one of embodiment 5 preparation prepare cellulose additive, adjusting pH is 7, makes floccule through devillicate machine after stirring 3 hours。It is above-mentioned that in whipping process, adding ultrasonic unit in pre-soaking pit surrounding carries out ultrasonic Treatment to raw material simultaneously；Described fiber devillicate machine slit width 0.2mm。
In the method, ultrasound working frequency is 80KHz, and ultrasonic power is 24000W；The ultrasound wave working time is 20s, and the intermittent time is 5s, and circulation repeats to process。
Step 3) to step 2) floccule made grinds and makes floccule cellulose bio-pulp；
Step 4), cellulose can be obtained after dehydration sub-sieve；Water after dehydration sub-sieve returns pre-soaking pit and re-uses。
Cellulosic length, width and length and width degree distributed data prepared by the embodiment of the present invention 8 method are shown in that Fig. 1 is to shown in 3。Above-mentioned floccule length accounts for more than 90% less than 1mm, and greatest length controls less than 3.5mm, and Breadth Maximum is 53.2 μm；
Above-described embodiment result shows, ultrasonic Treatment can effective increased fiber specific surface area, it is possible to increase the bond strength of paper。
Cellulose prepared by the embodiment of the present invention 8 method, beating degree ° sR, quantitative g/m2, ' tightness g/cm3,, whiteness %ISO, opacity %, fracture length km, tear index mN m2/ g, burst index KPa m2/ g, folding strength (secondary 180 °), average fiber length mm, mean fibre width μm is as shown in table 4 below:
The cellulose Testing index of table 4. embodiment 8 preparation
| Testing index | Testing result |
| Beating degree ° sR | 43 |
| Quantitative g/m2 | 61.12 |
| Tightness g/cm3 | 0.78 |
| Whiteness %ISO | / |
| Opacity % | 81.7 |
| Fracture length km | 7.10 |
| Tear index mN m2/g | 3.53 |
| Burst index KPa m2/g | 4.32 |
| Folding strength (secondary 180 °) | 1102 |
| Average fiber length mm | 0.88 |
| Mean fibre width μm | 25.22 |
Embodiment 9
The present invention also provides for another kind of cellulose preparation method, further, comprises the following steps: step 1), wheat straw and Caulis et Folium Oryzae mixed material are pulverized；
Step 2) broken wall treatment, by step 1) pulverize after raw material add in pre-soaking pit, add water；It is 32 DEG C that described broken wall treatment adds coolant-temperature gage, and amount of water is 0.5 times of described cellulose additive amount；
Add in pre-soaking pit raw material weight 30% embodiment 4 preparation one prepare cellulose additive；Adjusting pH is 7.5 acquisition mixed materials；
Step 3), preimpregnation made floccule through Twin screw extruder after 6 hours；It is highly preferred that described fiber devillicate machine slit width 0.2mm；
Step 4) to step 3) floccule made grinds and makes floccule cellulose bio-pulp；
Above-mentioned floccule length accounts for more than 90% less than 1mm, and greatest length controls less than 3.5mm；
Step 5), cellulose can be obtained after dehydration sub-sieve；Water after dehydration sub-sieve returns pre-soaking pit and re-uses。
Cellulose prepared by the embodiment of the present invention 9 method, beating degree ° sR, quantitative g/m2, ' tightness g/cm3,, whiteness %ISO, opacity %, fracture length km, tear index mN m2/ g, burst index KPa m2/ g, folding strength (secondary 180 °), average fiber length mm, mean fibre width μm is as shown in table 5 below:
The cellulose Testing index of table 5. embodiment 9 preparation
| Testing index | Testing result |
| Beating degree ° sR | 43 |
| Quantitative g/m2 | 61.12 |
| Tightness g/cm3 | 0.78 |
| Whiteness %ISO | / |
| Opacity % | 80.2 |
| Fracture length km | 6.80 |
| Tear index mN m2/g | 3.53 6 --> |
| Burst index KPa m2/g | 4.32 |
| Folding strength (secondary 180 °) | 1102 |
| Average fiber length mm | 0.77 |
| Mean fibre width μm | 25.82 |
Embodiment 10
The present invention also provides for another kind of cellulose preparation method, further, comprises the following steps: step 1), Eucalyptus raw material is pulverized；
Step 2) broken wall treatment, by step 1) pulverize after raw material add in pre-soaking pit, the raw material after pulverizing adds in pre-soaking pit, adds water；It is 30 DEG C that described broken wall treatment adds coolant-temperature gage, and amount of water is 1.5 times of described cellulose additive amount；
The one adding embodiment 5 preparation accounting for raw material weight 30% in pre-soaking pit prepares cellulose additive；Adjusting pH is 7.5 acquisition mixed materials；
Step 3), preimpregnation made floccule through Twin screw extruder after 10 hours；It is highly preferred that described fiber devillicate machine slit width 0.2mm；
Step 4) to step 3) floccule made grinds and makes floccule cellulose bio-pulp；
Above-mentioned floccule length accounts for more than 90% less than 1mm, and greatest length controls less than 3.5mm；
Step 5), cellulose can be obtained after dehydration sub-sieve；Water after dehydration sub-sieve returns pre-soaking pit and re-uses。
Cellulose prepared by the embodiment of the present invention 10 method, beating degree ° sR, quantitative g/m2, ' tightness g/cm3,, whiteness %ISO, opacity %, fracture length km, tear index mN m2/ g, burst index KPa m2/ g, folding strength (secondary 180 °), average fiber length mm, mean fibre width μm is as shown in table 6 below:
The cellulose Testing index of table 6. embodiment 11 preparation
| Testing index | Testing result |
| Beating degree ° sR | 43 |
| Quantitative g/m2 | 61.12 |
| Tightness g/cm3 | 0.78 |
| Whiteness %ISO | / |
| Opacity % | 80.78 |
| Fracture length km | 6.9 |
| Tear index mN m2/g | 3.53 |
| Burst index KPa m2/g | 4.12 |
| Folding strength (secondary 180 °) | 1102 |
| Average fiber length mm | 0.86 |
| Mean fibre width μm | 24.92 |
It is as shown in table 7 below that the following Testing index listing tradition bamboo willow slurry, broad-leaved slurry and the embodiment of the present invention 6 wadding fibrous element bio-pulp carries out contrast:
The Testing index contrast of table 7. bamboo willow slurry, broad-leaved slurry and the embodiment of the present invention 6 wadding fibrous element bio-pulp
| Testing index | Tradition bamboo willow slurry | Broad-leaved is starched | Wadding fibrous element bio-pulp |
| Beating degree ° sR. | 40 | 45 | 43 7 --> |
| Quantitative g/m2 | 60 | 60 | 61.12 |
| Tightness g/cm3 | - | 0.44 | 0.78 |
| Whiteness %ISO | 50 | / | / |
| Opacity % | - | 81 | 80.8 |
| Fracture length km | 3.9 | 4.9 | 6.60 |
| Tear index mN m2/g | 4.8 | 5.0 | 3.53 |
| Burst index KPa m2/g | 2.9 | 3.0 | 4.12 |
| Folding strength (secondary 180 °) | 35 | - | 1102 |
| Average fiber length mm | 0.68 | 0.66 | 0.86 |
| Mean fibre width μm | 15.1 | 15.3 | 25.12 |
Adopting the index major part utilizing wadding fibrous element bio-pulp prepared by the inventive method higher than tradition bamboo willow slurry, compared with the wadding fibrous element bio-pulp of embodiment 6 preparation, fracture length is 6.60km is 1.69 times of tradition bamboo willow slurry, and tear index remains basically stable；Burst index is 4.1KPa m2/ g is 1.41 times of tradition bamboo willow slurry；Folding strength improves the most obvious；Average fiber length is 0.764mm, illustrates that fibre damage is less compared with needle slurry in whole pulping process；Adopting pollution-free bamboo willow bio-pulping technology gained paper pulp opacity higher is 80.88%, and burst index is of substantially equal, and it is bigger that other learn mark difference；Compared with starching with broad-leaved, adopting pollution-free bamboo willow bio-pulping technology gained paper pulp tear index less, opacity and average fiber length remain basically stable, but fracture length, burst index, are improved, and are respectively increased 1.35 times, 1.37 times。As can be seen here, adopt pollution-free bamboo willow bio-pulping technology gained paper pulp physical index better, it is possible to meet the requirement of life and cultural paper。
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention。
Claims (13)
1. prepare cellulose additive for one kind, it is characterized in that, be made up of the raw material of following weight portion: yeast 10-15 part, carbamide 10-18 part, fatty alcohol-polyoxyethylene ether 12-18 part, alkylphenol polyoxyethylene 8-12 part, lipase 12-18 part, cellulase 3-8 part, aspergillus niger 3-8 part and hydrolytic enzyme 3-8 part。
2. one prepares cellulose additive according to claim 1, it is characterized in that, be made up of the raw material of following weight portion: 12 parts of yeast, 15 parts of carbamide, fatty alcohol-polyoxyethylene ether 15 parts, alkylphenol polyoxyethylene 10 parts, lipase 15 parts, cellulase 5 parts, aspergillus niger 5 parts and hydrolytic enzyme 5 parts。
3. one prepares cellulose additive according to claim 1, it is characterised in that described yeast is brewer yeast。
4. one prepares cellulose additive according to claim 3, it is characterised in that described brewer yeast is cereuisiae fermentum。
5. one according to any one of Claims 1-4 prepares cellulose additive, it is characterised in that described hydrolytic enzyme is alpha-Amino acid ester hydrolase and/or α proteolytic enzyme。
6. a cellulose preparation method, it is characterised in that comprise the following steps: step 1), fibrous raw material is pulverized；
Step 2) broken wall treatment, by step 1) pulverize after raw material add in pre-soaking pit, add water, in pre-soaking pit, add one described in any one of claim 1 to 5 accounting for raw material weight 7%-30% again prepare cellulose additive, adjustment pH is 6.5-7.5, makes floccule through fiber devillicate machine after stirring 2-10 hour；
Step 3), to step 2) floccule made grinds and makes wadding fibrous element bio-pulp；
Step 4), cellulose can be obtained after dehydration sub-sieve。
7. a kind of cellulose preparation method according to claim 6, it is characterised in that adding ultrasonic unit in pre-soaking pit surrounding carries out ultrasonic Treatment to raw material simultaneously in whipping process。
8. a kind of cellulose preparation method according to claim 7, it is characterised in that the running parameter of described ultrasonic unit: ultrasound working frequency is higher than 20000Hz, and ultrasonic power is 600～24000W；The ultrasound wave working time is 5～20s, and the intermittent time is 5～20s, and circulation repeats to process。
9. a kind of cellulose preparation method according to claim 7, it is characterised in that described broken wall treatment amount of water is described prepare cellulose additive amount 1-3 times, and temperature is 20-40 DEG C, makes floccule through Twin screw extruder after stirring 6-10 hour。
10. a kind of cellulose preparation method according to any one of claim 6 to 9, it is characterised in that step 4) water after dehydration sub-sieve returns pre-soaking pit and re-uses。
11. a cellulose preparation method, it is characterised in that comprise the following steps: step 1), fibrous raw material is pulverized；
Step 2) broken wall treatment, by step 1) pulverize after raw material add in pre-soaking pit, add water to flooding described raw material, add in pre-soaking pit again raw material weight 4%-8% any one of claim 1 to 5 described in one prepare cellulose additive, adjusting pH is that 6.5-7.5 obtains mixed material；
Step 3), by step 2) mixed material make floccule by Twin screw extruder；
Step 4), to step 3) floccule made grinds and makes wadding fibrous element bio-pulp；
Step 5), cellulose can be obtained after dehydration sub-sieve。
12. according to claim 11 cellulose preparation method, it is characterized in that, step 2) described broken wall treatment amount of water is described prepare cellulose additive amount 0.5-1.5 times, temperature is 20-40 DEG C, makes floccule through Twin screw extruder after stirring 6-10 hour。
13. according to claim 11 cellulose preparation method, it is characterised in that step 5) water after dehydration sub-sieve returns pre-soaking pit and re-uses。
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