CN109826049A - For the Cypres of papermaking and the papermaking process of improvement paper strength - Google Patents
For the Cypres of papermaking and the papermaking process of improvement paper strength Download PDFInfo
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Abstract
The present invention relates to the papermaking process of a kind of Cypres for papermaking and improvement paper strength, the active constituent of the Cypres is formulated by starch and powdered rice hulls, and the weight percent of the starch and powdered rice hulls is 99.5%~30%:0.5%~70%.Papermaking process are as follows: prepare starch solution and powdered rice hulls dispersion liquid；The powdered rice hulls dispersion liquid and the starch solution are mixed, is reacted, obtains surface sizing solution；The concentration of active constituent is 5-40wt% in the surface sizing solution；The active constituent is powdered rice hulls and starch, and the weight percent of the starch and powdered rice hulls is 99.5%~30%:0.5%~70%；Surface sizing solution is applied to the body paper surface not being glued, obtains sizing page, is dried.Cypres of the present invention are used for papermaking, paper strength obtained is significantly improved, while can also significantly reduce COD when manufactured goods recycling.
Description
Technical field
The present invention relates to field of papermaking, strong more particularly to a kind of Cypres for papermaking and a kind of improvement paper
The papermaking process of degree.
Background technique
Boxboard and corrugated paper are mainly used in packaging industry, are the maximum two classes paper products of Consumption of China amount.In 2016
In the paper and paperboard production that 1.1 hundred million tons of state, boxboard and the total specific gravity of corrugated paper Zhan are 45%.Due to paper pulp raw material shortage, China
Production boxboard and the enterprise of fluting medium mostly use waste carton to be produced, however China is this is used repeatedly
Waste Paper raw material paper strength produced is low, of poor quality.In order to meet the needs of user is to paper strength and other performances, one
As papermaking enterprise use top sizing, to improve the various performance indicators of paper and cardboard, including paper strength such as bursting strength, ring pressure
Intensity, tensile strength, folding strength etc..
Top sizing is on the two sides of Paper or cardboard, with the aqueous dispersions containing one or more Cypres, specific
Equipment in a kind of method for being glued.Most of Cypres are by having the hydrophobic group of repellence to water and having parent to slurry
It is constituted with the hydrophilic group of property.Hydrophobic group has styrene, alkene, vinegar base etc.；Hydrophilic group has the Malaysia containing carboxyl (anionic property)
Acid, acrylic acid etc. and the Dimethylamino-propenoyl vinegar etc. for containing amino (cationic).When they are applied to paper surface,
A part of surface size will permeate in paper layer, fill the gap in page；Another part will be left in page surface.In drying
In the process, since the glass transition temperature of polymer is lower than environment temperature, polymer shows as thermoplasticity.In this way, polymer particle
It can be stretched in fiber surface.At this point, anion cluster (- COOR) in Cypres by paper layer aluminum sulfate or sun from
The position absorption that sub- property polymer has been activated with cationic, and one layer of continuous film is formed, thus show sizing.Separately
Outside, top sizing can improve the surface strength of paper, internal combustion degree, and IGT gigging speed reduces air permeability, increases and endure
Degree, smoothness, improvement printing, and improve the resistance to rouge of paper, oil resistance etc..
General papermaking enterprise mainly uses starch to the hydrophilic sill of top sizing at present, and dosage is at 20-80 kgs/tonne
Paper.It is that people are rely life since the source of the starch of paper grade (stock) is mainly the crops such as cereal crops, such as corn, wheat, potato
The grain and daily necessities deposited, and China is well-known grain big country, and food shortage state, papermaking consumes much starch pair
Food Security in China brings hidden danger.The data of Chinese Department of Commerce show that Grain in China import whole year in 2012 has been more than 70,000,000
Ton, wherein 13,200,000 tons of net importation of starch-based grains (corn, wheat and rice), it is related researches show that this growth trends will
Continue.The Ministry of Agriculture's prediction, arrives the year two thousand twenty, and Chinese grain yield notch will be increased to 100,000,000 tons or more.According to Britain's " warp
Help a scholar " " 2013 world food safety index report " of think tank's publication, western countries have captured world food safety coefficient
The ranking list first echelon, it is Chinese then rank the 42nd, or even connect the Japan (18) and South Korea (24 of grain heavy dependence import
Position), also hold big lead over the grain security of China.
Need to be averaged 50 kgs/tonne of paper and national boxboard and corrugated paper are produced according to boxboard/corrugated paper is often close on 5000
Ten thousand tons of yield meters, consumed starch reaches 2,500,000 tons to China paper industry every year.It is obvious that papermaking uses a large amount of starch
It increases burden to Food Security in China.
In addition, when waste carton (OCC) is recovered in application, starch is largely dissolved or dispersed in pulping process
It is lost in water, leads to the high COD concentration of waste water, estimated according to domestic typical OCC paper plant creation data: the 30- of waste water COD
50% from starch.It assigns the table jelly of paper surface water-resistance to enter with the dissolution or dispersion of starch in plain boiled water, remove
Outside increase COD load, these synthetic chemicals are not degradable in wastewater treatment, increase wastewater treatment difficulty and at
This.As it can be seen that a large amount of use of starch brings great negative effect to the environmental protection of paper industry.
Therefore, entire paper industry always searches for a kind of " starch substituting agent " more more cost-effective than starch, for example, early
In 1994, United States Patent (USP) US5362573 disclosed one using zirconium, the metallic salt substance and starch table sol solution of hafnium and titanium
Reaction, to improve the water-resistance and surface strength of table glue, but the higher cost of the technology.U.S. Patent application
US20030037894 disclose using modification of polysaccharides (modified polysaccharide) substitute starch improve surface apply
Method of glue, including cellulose, guar gum, Chitosan etc..This method equally has defect at high cost.
Chinese invention patent application CN103388286A describes a kind of Cypres with the pressure enhancing of inorganic mine fibre ring,
The sizing agent is made of surface sizing starch and inorganic mine fibre, and the inorganic mine fibre is grandidierite fibre, modified grammite, silicon ash
One of stone, including wollastonite fibre, sepiolite fibre and attapulgite clay.Chinese invention patent application
CN103374857A is disclosed using mineral (size controlling is less than 1 μm), talcum powder and the carbon being made of hydrated aluminum silicate
The mineral such as sour calcium substitute partial starch.Peng Pengjie et al. (Peng et al (2011), Water-Glass Starch for
Linerboard, " BioResources " 6:4158-4167) addition waterglass is remarkably improved paper ring pressure and refers in discovery table glue
Number, thus partial starch is substituted as table glue auxiliary agent；But the research has the bursting strength of paper after also indicating that addition waterglass
Serious negative effect.Chinese patent application CN201210594688.1 is described using ferrous sulfate, combination copolymer and shallow lake
Powder crosslinking agent can substitute partial starch and can promote the quality of page, can be required according to different pages, the energy in gelatinization technique
The starch of 15-30% is substituted, more traditional surface sizing strengthening agent, which not only has on water repelling property, significantly to be promoted, while
Page ring pressure index on is obviously improved, have centainly prevent page get damp modification the problem of.
But there are no find a kind of economical and effective material part or even complete substitution starch as surface so far
Application of sizing agents, the Cypres should have more significant reinforcing effect than starch, should also have higher water-resistance.Develop this
Kind new technology will have very great meaning to the sustainable development of China paper industry, and can be the grain peace of China
All risk insurance barrier makes positive contribution.
China is a large agricultural country, produces several hundred million tons of grain every year, and even more maximum Rice Cropping is national in the world,
According to the data that State Statistics Bureau announces, China's paddy total output in 2016 be 2.07 hundred million tons (http: //
www.stats.gov.cn/tjsj/zxfb/201612/t20161208_1439012.html)." the skill edited according to Liu Tianfu
Art economic handbook (agricultural volume) " it calculates, the paddy hatching rate that be averaged is 19%~23%, and national rice husk annual output is more than 20,000,000
Ton.
Currently, rice husk is burned off mainly as agricultural product byproduct.In recent years, the domestic utilization to rice husk has been carried out a large amount of
Research, these research directions can be divided into substantially four direction, the i.e. utilization of rice husk cellulose/hemicellulose, rice husk so far
The utilization of silicon, the utilization of rice husk carbon and rice husk whole utilization.
The utilization of rice husk cellulose, which includes: (1), produces xylose and xylitol with rice husk, and (2) produce chaff with rice husk and wake up and chaff
Alcohol, (3) produce feed with rice husk, but nutriment contained by rice husk is seldom, and rice husk hardness is high, should not be directly as feeding
Material, needs working process, makes fiber softening or glycolysis, roughage is made.
The utilization with exploitation of silicon are mainly according to silica (the Si O in rice husk containing about 10~21% in rice husk2), and
It is undefined structure.The utilization of rice husk silicon is mainly made into various siliceous products at present, such as waterglass, white carbon black, rice husk
Cement, high-purity nm silica, high-temperature refractory etc., can also prepare the products such as silica solution and high purity silicon.
The carbon of rice husk utilizes siliceous Carbon Materials, the acticarbon that high-capacity lithium ion cell is mainly prepared with rice husk
With silicon carbide special material.
The whole utilization of rice husk first is that with rice husk make compressed fuel block.The bulk density of rice husk is small, generally 100-
140kg/m3If bonding agent or combustion adjuvant is added, fuel slug is made by compression forming, this compressed fuel block firepower is strong,
Fever time is long, and the efficiency of combustion of rice husk can be greatly improved.Another application is with rice husk gasifying electricity generation and rice husk steam-electric power:
Rice husk gasifying electricity generation refers to that rice husk gasifies in gasification furnace and generates fuel gas, by purification, supplies internal combustion engine or small gas
Turbine drives electrical power generators；Rice husk steam-electric power is to generate rice husk full combustion in steam boiler using rice husk as fuel
High steam, driving Turbo-generator Set power generation.But the combustible component of rice husk only has 70% or so, combustion heat value 12~
17MJ/kg, the calorific value that the only about half of standard coal (30MJ/kg), i.e. 2kg rice husk are equivalent to 1kg standard coal.It is very aobvious
So, this is a kind of application of low value.
More to the research of rice husk whole utilization is polymer matrix/rice husk powder composite material, that is, uses powdered rice hulls conduct
Reinforcing material, a kind of new green environment protection composite material being combined after pretreatment with thermoplastic resin, for make door,
The ornament materials such as window, floor.
So far, the report that rice husk is applied to the correlative study of pulping and paper-making is had not seen.
Summary of the invention
Based on this, an object of the present invention is to provide a kind of Cypres for papermaking.
Specific technical solution is as follows:
A kind of Cypres for papermaking, the active constituents of the Cypres by starch and powdered rice hulls preparation and
At the weight percent of the starch and powdered rice hulls is 99.5%~30%:0.5%~70%.
In wherein some embodiments, the weight percent of the starch and powdered rice hulls be 95%~40%:5%~
60%.
In wherein some embodiments, the weight percent of the starch and powdered rice hulls be 90%~50%:10%~
50%.
In wherein some embodiments, the weight percent of the starch and powdered rice hulls be 90%~60%:10%~
40%.
In wherein some embodiments, which is characterized in that the partial size of the powdered rice hulls is 0.2~300 μm.
In wherein some embodiments, the powdered rice hulls include by rice husk by machining made by obtain powder,
Powdered rice hulls are passed through to the modification powdered rice hulls obtained made by chemistry or biological treatment.
In wherein some embodiments, the starch is cornstarch and/or tapioca.
Another object of the present invention is to provide a kind of papermaking process for improving paper strength.
Specific technical solution is as follows:
A kind of papermaking process improving paper strength, includes the following steps:
(1) starch solution is prepared；
(2) powdered rice hulls dispersion liquid is prepared；
(3) the powdered rice hulls dispersion liquid and the starch solution are mixed, obtains mixed solution, the mixed solution is carried out
Reaction, obtains surface sizing solution；The concentration (solid content) of active constituent is 5~40wt% in the mixed solution；The activity
Ingredient is powdered rice hulls and starch, and the weight percent of the starch and powdered rice hulls is 99.5%~30%:0.5%~70%；
(4) surface sizing solution is applied to the body paper surface not being glued, obtains sizing page；
It (5) will sizing page drying.
In wherein some embodiments, the weight percent of the starch and powdered rice hulls be 95%~40%:5%~
60%.
In wherein some embodiments, the weight percent of the starch and powdered rice hulls be 90%~50%:10%~
50%.
In wherein some embodiments, the weight percent of the starch and powdered rice hulls be 90%~60%:10%~
40%.
In wherein some embodiments, the concentration of active constituent is 5~10% in the mixed solution.
In wherein some embodiments, the partial size of the powdered rice hulls is 0.2~300 μm.
In wherein some embodiments, the powdered rice hulls include by rice husk by machining made by obtain powder,
Powdered rice hulls are passed through to the modification powdered rice hulls obtained made by chemistry or biological treatment.
In wherein some embodiments, the starch is cornstarch and/or tapioca.
In wherein some embodiments, the applied amount of surface sizing solution described in step (4) are as follows: press surface sizing solution
In active ingredient, apply the active constituent of 5~100kg in dry finish per ton.
In wherein some embodiments, the applied amount of surface sizing solution described in step (4) are as follows: press surface sizing solution
Middle active ingredient, the paper per ton apply the active constituent of 10~80kg.
In wherein some embodiments, the temperature of reaction described in step (3) is 20~90 DEG C, and the time is 2~200min.
In wherein some embodiments, the temperature of reaction described in step (3) is 40~85 DEG C.
In wherein some embodiments, the temperature of reaction described in step (3) is 50~70 DEG C, and the time is 40~80min.
In wherein some embodiments, the preparation temperature that step (1) is described when preparing starch solution is 80~100 DEG C.?
In some of embodiments, the weight percent of starch is 3~20wt% in step (1) described starch solution.
In wherein some embodiments, the preparation temperature that step (2) is described when preparing powdered rice hulls dispersion liquid is 10~40 DEG C.
In wherein some embodiments, in step (2) the powdered rice hulls dispersion liquid weight percent of powdered rice hulls be 1~
55wt%.
In wherein some embodiments, the method for application described in step (4) is scraper method, infusion method, spray-on process or thin
Film transfer method.
The papermaking process of Cypres and improvement paper strength for papermaking of the invention has the following advantages that and has
Beneficial effect:
(1) present invention obtains through a large amount of experiment and research of inventor and applies surface made of starch and powdered rice hulls compounding
Jelly is used for papermaking, various physical strengths (including tensile strength, ring crush intensity, pop strength and the folding of obtained paper
Degree) it is significantly improved.
(2) Cypres of the present invention substitute partial starch using powdered rice hulls, are conducive to the stabilization of the grain of China
Supply, reduces the dependence of food import, improves the strategic security of China.
(3) papermaking process of the present invention passes through the concentration and active constituent of active constituent in control surface sizing solution
The content of middle powdered rice hulls and starch can be prepared by the paper that tensile strength is strong, compression strength is high；Further, pass through control table
The applied amount and/or starch of face sizing solution and the reaction condition of powdered rice hulls, obtained pop strength is higher, compression strength is stronger
Paper.
(4) powdered rice hulls of the present invention are agricultural by product, are fully natural green products, to human body and environment without any negative
Face is rung；The prior paper product recycling compared with existing production method, produced with method of the invention is in application, useless
COD in water is significantly reduced, and is good for the environment the development of low-carbon.
Detailed description of the invention
Fig. 1 is that the total resin added of holding in embodiment 2 is 80kg/T, and powdered rice hulls B substitutes starch to the ring crush index of paper
Influence；
It is 80kg/T that Fig. 2, which is the total resin added of holding in embodiment 2, and powdered rice hulls B substitutes starch to the bursting strength of paper
Influence diagram；
Fig. 3 is that the total resin added of holding in embodiment 3 is 80kg/T, and powdered rice hulls C substitutes starch to the ring crush index of paper
Influence；
It is 80kg/T that Fig. 4, which is the total resin added of holding in embodiment 3, and powdered rice hulls C substitutes starch to the bursting strength of paper
Influence diagram；
Influence diagram of the additive amount to paper longitudinal direction folding strength that Fig. 5 is the powdered rice hulls D in embodiment 4；
Influence diagram of the additive amount to paper transverse direction folding strength that Fig. 6 is the powdered rice hulls D in embodiment 4；
Influence diagram of the additive amount to paper bursting strength that Fig. 7 is the powdered rice hulls D in embodiment 4；
Influence diagram of the additive amount to H200 paper longitudinal direction folding strength that Fig. 8 is the powdered rice hulls B in embodiment 5；
Influence diagram of the additive amount to B100 paper longitudinal direction folding strength that Fig. 9 is the powdered rice hulls B in embodiment 5；
Figure 10 is that the powdered rice hulls B in embodiment 7 substitutes starch to the influence at paper COD；
A, B, C, D in attached drawing refer respectively to powdered rice hulls A, powdered rice hulls B, powdered rice hulls C, powdered rice hulls D.
Specific embodiment
Powdered rice hulls used in the present invention include that rice husk is made by machining (such as crushing, ball milling and sieve classification)
Obtained powder, by powdered rice hulls by chemistry or biological treatment (including bleaching, degreasing or desiliconization etc.) it is made obtain change
Property powdered rice hulls.The main component of powdered rice hulls is as follows: cellulose 5-45%, lignin 20-26%, hemicellulose 16-21%, albumen
Matter 2-3%, wax ester 0.5-1.5%, silica 1 0-21%, moisture 6-15%, other ingredients are surplus.
Starch (Starch)
The chemical general formula of starch is (C6H10O5) n, hydrolysis to disaccharides stage is maltose, obtains monosaccharide after complete hydrolysis
(glucose).Starch can be divided into amylose (amylose) and amylopectin (amylopectin).
(1) amylose: phlorose is sequentially connected with α (1-4) glycosidic bond grows up and indiscrete glucose polymer.
It is made of in typical case thousands of glucose line bases, molecular weight is branchiess helical structure from 150000 to 600000.
(2) it amylopectin: is just formed every 20-25 glucose residue with α -1,4- glycosidic bond head on the basis of straight chain
Tail, which is connected, to be formed, and is α -1, the glycosidic bond of 6- at branch.
Amylose chance iodine is blue, and it is in aubergine that amylopectin, which meets iodine,.
Cellulose (Cellulose)
Cellulose, which is connected by many β-D-Glucose molecule with β-(1-4) glycosidic bond, forms straight chain.Cellulose is that plant is thin
The principal structural component of cell wall accounts for the most abundant organic matter of 1/3 or so and nature of plant total weight.
Below with reference to specific embodiment, the present invention will be further described.
The specimen material of the powdered rice hulls of test is as follows in following embodiments:
Powdered rice hulls A derives from Hunan, and the partial size of particle is less than 80 mesh；Ash content is 17.0%, moisture 9.4%.
Powdered rice hulls B derives from Hebei, and partial size is less than 100 mesh, ash content 21.9%, moisture 11.5%.
The source powdered rice hulls C Anhui, partial size is less than 100 mesh, ash content 20.2%, moisture 13.0%.
The source powdered rice hulls D Anhui, partial size is less than 100 mesh, ash content 22.4%, moisture 11.8%.
Powdered rice hulls F is that powdered rice hulls B passes through ball milling 60 minutes, all passes through the production after 200 mesh screens and dry moisture removal
Product.
1 powdered rice hulls A of embodiment substitutes gelatinized starch and is producing the application in corrugated paper with OCC raw material
One, material
Starch is cornstarch or tapioca, comes from Dongguan perfection starch Co., Ltd；Body paper is derived from Dongguan Xu Feng paper
Industry Co., Ltd, the corrugated paper of the useless production of the OCC state for being 100% (Pu Wa is not glued)；Powdered rice hulls are from Hunan (rice husk
Powder A).
Two, surface sizing method and test procedure are as follows:
1. taking the beaker of 1000ml, 940.0g deionized water is weighed in beaker, and is put it into 95 DEG C of magnetic force water-baths and stirred
It mixes in device, 60.00g starch is added under stirring, 0.024g potassium persulfate (Starch Reducing Viscosity Agent, dosage phase are added later
For the 0.04% of starch dosage), then started timing 60 minutes, timing knot with sizeable surface plate by beaker cover
Starch is put into 62.2 DEG C of water-baths after beam and is cooled to 62.2 DEG C, 6% starch solution is made, saves backup.
2. taking a certain amount of powdered rice hulls A in beaker, at room temperature plus the mass concentration of deionized water to powdered rice hulls A are
45%, it is configured to the dispersion liquid of the powdered rice hulls A of 45% solid content.
3. the AKD lotion for taking 2.00g paper plant to sample adds deionized water to 100.00g, then stirs in 100ml beaker
Uniformly, 2% AKD solution is prepared, is stored spare.
4. preparing pattern and calculating resin added: pattern size needed for being detected according to the working size of sizing applicator and experiment, in advance
The pattern for first cutting 50cm*30cm size weighs to each pattern, then calculates sizing agent dosage and AKD dosage；
5. compounding sizing agent and tested viscosity: the powdered rice hulls A that will be configured in the starch solution prepared in step 1 and step 2
Dispersion liquid according to certain substitution/adding proportion in beaker mix merga pass addition deionized water be configured to certain solid content
Mixed solution (solid concentration for being shown in Table glue application solution in 1) (total amount 200g or so, be convenient for tested viscosity), put it into after mixing
In 62.2 DEG C of water-bath, stirred at revolving speed 105rpm 5 minutes (purpose is to break up powdered rice hulls A and uniformly mix with starch),
Revolving speed is down to 55rpm later and continues stirring 55 minutes to get table sol solution, beaker is taken out after stirring and tests table sol solution
Viscosity and temperature, comparative experiments starch solution mixing test under the same conditions.
6. glue applying method:
A. the amount of table sol solution and the amount of AKD are weighed according to the resin added calculated in step 4, and the two is uniformly mixed
Afterwards, it is put into 62.2 DEG C of water-baths and keeps the temperature 1 minute (guaranteeing that it glues preceding temperature), obtain glue；
B. glue is uniformly applied to paper one with syringe to survey, opens sizing applicator and is glued；
C. paper is spontaneously dried on the top of the shelf after the sizing of the first face of paper；
D. paper is put into when paper glue surface does not have obvious moisture in 105 DEG C of heating plate and is heated 5 minutes；
E. it after heating, takes out pattern and balances the second face sizing for carrying out paper after a certain period of time in air, repeat
Above step；
F. after being glued, all patterns is uniformly put on the top of the shelf, 50%RH, 23 DEG C of constant-temperature constant-humidity environment are put into
After one evening of middle balance, physical property detection is carried out.
7. according to the ring crush intensity and bursting strength of TAPPI method test paper.
Three, experimental result
Experimental result is as shown in Table 1 and Table 2, as seen from Table 1, when not adding AKD as water repellent agent, compares 100%
The pattern of starch table glue sizing, powdered rice hulls A substitute partial starch as the sizing of table glue, paper ring crush index and bursting strength all with
Substitution rate increases and dramatically increases, and when 30% starch is substituted by powdered rice hulls A, ring crush index and bursting strength are increased separately
32% and 24%.
When table 1 is not added with AKD, powdered rice hulls A substitutes influence of the starch to the ring pressure and pop strength of paper.
As can be seen from Table 2, water repellent agent AKD is added (when additive amount is 5kg/T (ton paper), with powdered rice hulls A substitution starch
The raising trend of the increase of ratio, paper ring crush index and bursting strength with it is essentially the same when not adding water repellent agent AKD.
When table 2 adds AKD table jelly, powdered rice hulls substitute influence of the starch to the ring pressure and pop strength of paper.
2 powdered rice hulls B of embodiment substitutes influence of the starch to paper strength
One, material:
Starch is cornstarch, comes from Dongguan perfection starch Co., Ltd；Body paper is derived from Dongguan Xu Feng Paper Co., Ltd,
For the corrugated paper of the 100% useless production of OCC state (Pu Wa is not glued)；Powdered rice hulls derive from Hebei (powdered rice hulls B).
Two, surface sizing method and experimental procedure are the same as embodiment 1.
Three, experimental result
As a result as depicted in figs. 1 and 2, as those skilled in the familiar, individually it is glued using starch, paper strength
The bursting strength and tensile strength of especially paper start that starch dosage can be worked as the dosage of starch increases and increased
After reaching certain value, the physical index (such as tensile strength, bursting strength) of paper reaches " saturation value " and does not continue to increase.
For most of paper grades, this " saturation value " is generally present in starch dosage between 20-40kg/ tons of paper.
Fig. 1 and Fig. 2 shows the starch surface sizing agent compared to no addition powdered rice hulls, to add the starch table of powdered rice hulls
Surface sizing agent (keeping total resin added in 80kg/T) is glued, and the ring crush intensity and bursting strength of paper are as powdered rice hulls add
The increase of amount and dramatically increase.
3 powdered rice hulls C of embodiment substitutes influence of the substitution rate of starch to paper strength
One, material:
Starch is cornstarch, comes from Dongguan perfection starch Co., Ltd；Body paper is derived from Dongguan Xu Feng Paper Co., Ltd,
For the corrugated paper of the 100% useless production of OCC state (Pu Wa is not glued)；Powdered rice hulls are from Anhui (powdered rice hulls C).
Two, surface sizing method and experimental procedure are the same as embodiment 1.
Three, experimental result
Test result is shown in Table 3.By 3 result of table as it can be seen that with powdered rice hulls C substitution rate increase, the ring crush index of paper and
Bursting strength dramatically increases, and in substitution rate 30-40%, ring crush index and bursting strength all reach peak；Later with powdered rice hulls
Increase, ring crush index and bursting strength decline gradually.
Influence of the mixed proportion of 3 starch of table and powdered rice hulls C to the ring crush index, burst index of paper.
Fig. 3 and Fig. 4 is compared under different starch sizing dosages, shadow of the addition powdered rice hulls C to paper ring crush index and bursting strength
It rings.As can be seen that ring crush index and bursting strength are all close to maximum value has been reached, into one when starch resin added reaches 50kg/T
It is little to ring pressure and resistance to broken influence that step increases starch dosage.But addition powdered rice hulls C can but significantly improve ring crush index and resistance to
Broken degree.For example, add 32kg/T powdered rice hulls C (total resin added be 80kg/T) on the basis of 48kg/T starch, ring crush index from
4.9 rise to 7.0, and the ring crush index of 80kg/T starch sizing only has 5.9；Similarly, bursting strength rises to 2.39 from 1.95,
20% is improved, and increases starch to 80kg/T, bursting strength is basically unchanged.
Influence of the addition of 4 powdered rice hulls D of embodiment to the folding strength of paper
One, material:
Starch is cornstarch, comes from Dongguan perfection starch Co., Ltd；Body paper is derived from Dongguan Li Wen Paper Co., Ltd,
Paper grades are craft paper B100；Powdered rice hulls are from Anhui (powdered rice hulls D).
Two, surface sizing method and experimental procedure are the same as embodiment 1.
Three, experimental result
Influence of the powdered rice hulls D of Fig. 5 and Fig. 6 display Different adding amount to the folding strength of paper, Fig. 7 are shown to bursting strength
It influences.As it can be seen that folding strength and bursting strength all gradually increase with the increase of powdered rice hulls D dosage；When dosage reaches 4-6kg/T,
Folding strength and bursting strength, which all approach, has reached maximum value；Further increasing dosage less or slightly has folding and resistance to broken influence
Decline.In best powdered rice hulls D dosage, longitudinal folding strength is increased to 50 from 35, improves 42%；Lateral folding strength is improved from 7
To 11,57% is improved；Bursting strength rises to 1.96 from 1.77, improves 10%.
Influence of the 5 powdered rice hulls B of embodiment to the folding strength of different paper
One, material:
Starch is cornstarch, is provided from Dongguan perfection starch Co., Ltd；It is limited that body paper is derived from the literary paper industry of Dongguan reason
Company, paper grades are craft paper B100 and high-grade ox blocks H200.
Two, surface sizing method and experimental procedure are the same as embodiment 1.
Three, experimental result
Influence of the powdered rice hulls B of Fig. 8 and Fig. 9 display different amounts to the folding strength of B100 and H200 paper.As it can be seen that with
The increase of powdered rice hulls B dosage, folding strength dramatically increase；In best powdered rice hulls B dosage, longitudinal folding strength of H200 paper from
305 are increased to 438, improve 43.6%；Longitudinal folding strength of B100 paper has been increased to 48 from 34, improves 41%.
Influence of the processing method and order of addition of 6 powdered rice hulls of embodiment to paper strength
One, material:
Starch is cornstarch, comes from Dongguan perfection starch Co., Ltd；Body paper is derived from Dongguan Xu Feng Paper Co., Ltd,
For the corrugated paper of the 100% useless production of OCC state.
Two, the step of surface sizing method is as follows:
I, powdered rice hulls B and starch together the glue applying method of boiling the step of it is as follows:
1. preparing compound sizing agent: weigh starch and powdered rice hulls B respectively according to certain substitution/adding proportion, and by its
Uniformly mixing, obtains compound sizing agent, saves backup.
2. the compound sizing agent of boiling and compounding 6%:
A. the compound sizing agent of boiling 10%: 250ml beaker in tall form is taken, deionized water is weighed according to needed for experiment (e.g.,
108g), it is put in 95 DEG C of magnetic force stirring in water bath devices, is added under stirring compound sizing agent (e.g., 12g), weighed simultaneously
The total weight of beaker at this time is recorded, is then started timing 40 minutes with sizeable surface plate by beaker cover；
B. beaker is taken out after timing, weighing and adding deionized water (e.g., 80g) to solution concentration is 6%, then
It puts it into 62.2 DEG C of water-baths, is stirred at revolving speed 105rpm 5 minutes (purpose is to keep consistent with experiment before), it
Revolving speed is down to 55rpm afterwards and continues stirring 55 minutes to get table sol solution, beaker is taken out after stirring and tests its viscosity and temperature
Degree (also did the experiment of the compound sizing agent of direct 6% concentration of boiling, which is divided into addition and does not add potassium persulfate
It two kinds, adds additive amount in the experiment of potassium persulfate and is added after compound sizing agent is added according to the 0.04% of starch dosage
Boiling).
3. the AKD lotion for taking 2.00g paper plant to sample adds deionized water to 100.00g, then stirs in 100ml beaker
Uniformly, 2% AKD solution is prepared, is stored spare:
4. preparing pattern and calculating resin added: pattern size needed for being detected according to the working size of sizing applicator and experiment, in advance
The pattern for first cutting 50cm*30cm size weighs to each pattern, then calculates sizing agent dosage and AKD dosage；
5. glue applying method:
A. the amount of table sol solution and the amount of AKD are weighed according to the resin added calculated in step 4, and the two is uniformly mixed
Afterwards, it is put into 62.2 DEG C of water-baths and keeps the temperature 1 minute (guaranteeing that it glues preceding temperature), obtain glue；
B. glue is uniformly applied to paper one with syringe to survey, opens sizing applicator and is glued；
C. paper is spontaneously dried on the top of the shelf after the sizing of the first face of paper；
D. paper is put into when paper glue surface does not have obvious moisture in 105 DEG C of heating plate and is heated 5 minutes；
E. it after heating, takes out pattern and balances the second face sizing for carrying out paper after a certain period of time in air, repeat
Above step；
F. after being glued, all patterns is uniformly put on the top of the shelf, 50%RH, 23 DEG C of constant-temperature constant-humidity environment are put into
After one evening of middle balance, physical property detection is carried out.
6. according to the ring crush intensity of TAPPI method test paper, bursting strength.
II, respectively boiling powdered rice hulls B and starch, then again by the powdered rice hulls B and starch-mixed glue applying method after boiling
The step of it is as follows:
1. cooking starch: taking the beaker of 1000ml, weigh 940.0g deionized water in beaker, and put it into 95 DEG C of magnetic
In power stirring in water bath device, 60.00g starch is added under stirring, 0.024g potassium persulfate (starch viscosity reduction is added later
Agent, dosage relative to starch dosage 0.04%), then with sizeable surface plate will on beaker cover, start timing 60 divide
Starch is put into 62.2 DEG C of water-baths after timing and is cooled to 62.2 DEG C by clock, and 6% starch solution is made, saves backup.
2. boiling powdered rice hulls B: taking a certain amount of powdered rice hulls B in beaker, add deionized water to the mass concentration of powdered rice hulls B
It is 45%, puts it into 95 DEG C of magnetic force stirring in water bath devices, be configured to the powdered rice hulls B's of 45% solid content under stirring
Dispersion liquid.
3. the AKD lotion for taking 2.00g paper plant to sample adds deionized water to 100.00g, then stirs in 100ml beaker
Uniformly, 2% AKD solution is prepared, is stored spare.
4. preparing pattern and calculating resin added: pattern size needed for being detected according to the working size of sizing applicator and experiment, in advance
The pattern for first cutting 50cm*30cm size weighs to each pattern, then calculates sizing agent dosage and AKD dosage；
5. compounding sizing agent and tested viscosity: the powdered rice hulls B that will be configured in the starch solution prepared in step 1 and step 2
It is molten according to the mixing that mixed merga pass addition deionized water is configured to certain solid content in beaker of certain substitution/adding proportion
Liquid (solid concentration for being shown in Table glue application solution in 4 or table 5) (total amount 200g or so is convenient for tested viscosity), puts it into after mixing
In 62.2 DEG C of water-bath, stirred at revolving speed 105rpm 5 minutes (purpose is to break up powdered rice hulls B and uniformly mix with starch),
Revolving speed is down to 55rpm later and continues stirring 55 minutes to get table sol solution, beaker is taken out after stirring and tests table sol solution
Viscosity and temperature, comparative experiments starch solution mixing test under the same conditions.
6. glue applying method:
A. the amount of table sol solution and the amount of AKD are weighed according to the resin added calculated in step 4, and the two is uniformly mixed
Afterwards, it is put into 62.2 DEG C of water-baths and keeps the temperature 1 minute (guaranteeing that it glues preceding temperature), obtain glue；
B. glue is uniformly applied to paper one with syringe to survey, opens sizing applicator and is glued；
C. paper is spontaneously dried on the top of the shelf after the sizing of the first face of paper；
D. paper is put into when paper glue surface does not have obvious moisture in 105 DEG C of heating plate and is heated 5 minutes；
E. it after heating, takes out pattern and balances the second face sizing for carrying out paper after a certain period of time in air, repeat
Above step；
F. after being glued, all patterns is uniformly put on the top of the shelf, 50%RH, 23 DEG C of constant-temperature constant-humidity environment are put into
After one evening of middle balance, physical property detection is carried out.
7. according to the ring crush intensity and bursting strength of TAPPI method test paper.
Three, experimental result
Table 4 and table 5 show powdered rice hulls B and starch boiling or the preparatory boiling of powdered rice hulls B then again and after boiling together
Starch mixes, influence of the sizing to the physical index of paper under Different adding amount.Compared with uncooked powdered rice hulls B, paper
The increase rate of physical index is unobvious, even if starch substitution rate is 40%, the physical index of paper is not also substantially by shadow
It rings.
4 powdered rice hulls B of table and starch influence of the boiling to table glue effect together
B replaces 20% to refer to that (total resin added is 40kg/T), other to analogize with the starch of powdered rice hulls B substitution 20%；B addition
20% refers to the powdered rice hulls B of addition 20% in starch (40kg/T) in same amount, other to analogize.
After the 5 preparatory boiling of powdered rice hulls B of table, then the influence with starch mixing to table glue effect
B replaces 20% to refer to that (total resin added is 40kg/T), other to analogize with the starch of powdered rice hulls B substitution 20%；B addition
20% refers to the powdered rice hulls B of addition 20% in starch (40kg/T) in same amount, other to analogize.
The influence of the additive amount of 7 powdered rice hulls of embodiment and the solid content of glue application solution to top sizing
One, material:
Starch is cornstarch, comes from Dongguan perfection starch Co., Ltd；Body paper is derived from Dongguan Xu Feng Paper Co., Ltd,
For the corrugated paper of the 100% useless production of OCC state.
Two, the step of surface sizing method is as follows:
1. cooking starch: taking the beaker of 1000ml, weigh 800.0g deionized water in beaker, and put it into 95 DEG C of magnetic
In power stirring in water bath device, 200.00g starch is added under stirring, bis- potassium sulfate of 2.0g is added later, and (Starch Reducing Viscosity Agent is used
Measure 1.0% relative to starch dosage), then started timing 60 minutes, timing with sizeable surface plate by beaker cover
After starch be put into 62.2 DEG C of water-baths be cooled to 62.2 DEG C, 20% starch solution is made, saves backup.
2. the preparation of powdered rice hulls F dispersion liquid: taking a certain amount of powdered rice hulls F in beaker, at room temperature plus deionized water is to rice
The mass concentration of shell powder F is 45%, and the dispersion liquid of the powdered rice hulls B of 45% solid content is configured under stirring.
3. the AKD lotion for taking 2.00g paper plant to sample adds deionized water to 100.00g, then stirs in 100ml beaker
Uniformly, 2% AKD solution is prepared, is stored spare.
4. preparing pattern and calculating resin added: pattern size needed for being detected according to the working size of sizing applicator and experiment, in advance
The pattern for first cutting 50cm*30cm size weighs to each pattern, then calculates sizing agent dosage and AKD dosage；
5. compounding sizing agent and tested viscosity: the powdered rice hulls F that will be configured in the starch solution prepared in step 1 and step 2
It is molten according to the mixing that mixed merga pass addition deionized water is configured to certain solid content in beaker of certain substitution/adding proportion
Liquid (solid concentration for being shown in Table glue application solution in 6) (total amount 200g or so is convenient for tested viscosity), puts it into 62.2 DEG C after mixing
In water-bath, stirs at revolving speed 105rpm 5 minutes (purpose is to break up powdered rice hulls F and uniformly mix with starch), will turn later
Prompt drop continues stirring 55 minutes to get table sol solution to 55rpm, taken out after stirring beaker test table sol solution viscosity and
Temperature, comparative experiments starch solution mixing test under the same conditions.
6. glue applying method:
A. the amount of table sol solution and the amount of AKD are weighed according to the resin added calculated in step 4, and the two is uniformly mixed
Afterwards, it is put into 62.2 DEG C of water-baths and keeps the temperature 1 minute (guaranteeing that it glues preceding temperature), obtain glue；
B. glue is uniformly applied to paper one with syringe to survey, opens sizing applicator and is glued；
C. paper is spontaneously dried on the top of the shelf after the sizing of the first face of paper；
D. paper is put into when paper glue surface does not have obvious moisture in 105 DEG C of heating plate and is heated 5 minutes；
E. it after heating, takes out pattern and balances the second face sizing for carrying out paper after a certain period of time in air, repeat
Above step；
F. after being glued, all patterns is uniformly put on the top of the shelf, 50%RH, 23 DEG C of constant-temperature constant-humidity environment are put into
After one evening of middle balance, physical property detection is carried out.
7. according to the ring crush intensity and bursting strength of TAPPI method test paper.
Three, experimental result
Table 6 is shown under higher starch concentration and different powdered rice hulls F additive amounts, and sizing solution solid content and powdered rice hulls add
Influence of the dosage to the physical index of paper.As it can be seen that when not adding powdered rice hulls, as total solid concentration increases, table sol solution
Viscosity increase considerably, reduce sizing active constituent paper infiltration, to reduce paper strength；When total solids content reaches
It arrives and when more than 20%, every intensity index of paper is reduced, show that excessively high sizing concentration is unfavorable to top sizing.Work as addition
When powdered rice hulls F, the addition of powdered rice hulls F can reduce the viscosity of table sol solution, so that it is better to have the paper being prepared
Intensity.
The influence of 6 glue application solution solid concentration of table and powdered rice hulls additive amount to sizing fluid viscosity and sizing efficiency
Influence of the substitution starch of 8 powdered rice hulls B of embodiment to paper recovery and reusing and recycling
Test method:
(1) it after the sized paper in embodiment 6 being cut into fragment, is placed in water in pulper, adds pure water to 6%
Solid concentration (slurry is dense).
(2) pulper is opened, pulping time is 5 minutes, obtains slurries；
(3) slurries made by step (2) are taken, are filtered with standard filter paper, filtrate is obtained, then conventionally tests
Chemical oxygen consumption (COC) (COD) concentration of filtrate.
The results are shown in Figure 10: under the conditions of identical resin added, with the increase of the substitution rate of powdered rice hulls B, paper is returned
COD caused by receiving gradually declines.When the substitution rate of powdered rice hulls B reaches 50%, COD only has the 72% of pure starch.These
The result shows that table glue technology of the invention will greatly reduce the release of the COD of waste paper recycling, it is green to the environmental protection of China paper industry
Chromogenic development plays the role of great positive.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of Cypres for papermaking, which is characterized in that the active constituent of the Cypres is by starch and rice
Shell powder is prepared, and the weight percent of the starch and powdered rice hulls is 99.5%~30%:0.5%~70%.
2. the Cypres according to claim 1 for papermaking, which is characterized in that the weight of the starch and powdered rice hulls
Amount percentage is 95%~40%:5%~60%.
3. the Cypres according to claim 2 for papermaking, which is characterized in that the weight of the starch and powdered rice hulls
Amount percentage is 90%~50%:10%~50%.
4. the Cypres according to claim 1-3 for papermaking, which is characterized in that the powdered rice hulls
Partial size is 0.2~300 μm.
5. the Cypres according to claim 1-3 for papermaking, which is characterized in that the starch is jade
Rice starch and/or tapioca.
6. a kind of papermaking process for improving paper strength, which comprises the steps of:
(1) starch solution is prepared；
(2) powdered rice hulls dispersion liquid is prepared；
(3) the powdered rice hulls dispersion liquid and the starch solution are mixed, obtains mixed solution, the mixed solution carried out anti-
It answers, obtains surface sizing solution；The concentration of active constituent is 5~40wt% in the mixed solution；The active constituent is rice husk
The weight percent of powder and starch, the starch and powdered rice hulls is 99.5%~30%:0.5%~70%；
(4) surface sizing solution is applied to the body paper surface not being glued, obtains sizing page；
It (5) will sizing page drying.
7. the papermaking process according to claim 6 for improving paper strength, which is characterized in that the partial size of the powdered rice hulls is
0.2~300 μm.
8. the papermaking process according to claim 6 or 7 for improving paper strength, which is characterized in that the starch is corn
Starch and/or tapioca.
9. the papermaking process according to claim 6 or 7 for improving paper strength, which is characterized in that table described in step (4)
The applied amount of face sizing solution are as follows: apply 5~100kg's by the active ingredient in surface sizing solution, in dry finish per ton
Active constituent.
10. the papermaking process according to claim 6 or 7 for improving paper strength, which is characterized in that described in step (3)
The temperature of reaction is 20~90 DEG C, and the time is 2~200min.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205218A (en) * | 2013-05-02 | 2013-07-17 | 张贵清 | Special filler for plywood glue |
| CN103374857A (en) * | 2012-04-11 | 2013-10-30 | 金东纸业（江苏）股份有限公司 | Sizing agent and preparation method therefor |
| CN104611990A (en) * | 2014-12-18 | 2015-05-13 | 瑞辰星生物技术（广州）有限公司 | A surface sizing agent for papermaking, and a papermaking method for improving paper strength and water resistance |
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2017
- 2017-11-23 CN CN201711185666.9A patent/CN109826049B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103374857A (en) * | 2012-04-11 | 2013-10-30 | 金东纸业（江苏）股份有限公司 | Sizing agent and preparation method therefor |
| CN103205218A (en) * | 2013-05-02 | 2013-07-17 | 张贵清 | Special filler for plywood glue |
| CN104611990A (en) * | 2014-12-18 | 2015-05-13 | 瑞辰星生物技术（广州）有限公司 | A surface sizing agent for papermaking, and a papermaking method for improving paper strength and water resistance |
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