CN109837798A - A kind of preparation method of plant fiber-based waterproof and sealing material - Google Patents
A kind of preparation method of plant fiber-based waterproof and sealing material Download PDFInfo
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Abstract
The present invention relates to a kind of preparation methods of plant fiber-based waterproof and sealing material, belong to pulping and paper-making field.Preparation method of the present invention includes the following steps: first to impregnate vegetable-fibre slurry in water and discongest, be beaten, after sequentially adding precipitating reagent, sizing material, retention agent, latex, filler, it is then added in sheet forming apparatus, it copies and takes page, vacuum drying press polish obtains plant fiber-based waterproof and sealing material.The raw material sources that the present invention prepares plant fiber-based waterproof and sealing material are extensive, and the plant fiber-based waterproof and sealing material of preparation is at low cost, degradable, environmentally protective, harmless.
Description
Technical field
The present invention relates to a kind of preparation methods of plant fiber-based waterproof and sealing material, belong to pulping and paper-making field.
Background technique
Asbestos are considered as a kind of minerals of mystery, it is natural silicate substance, are had fire-retardant, heat-insulated and corrosion-resistant
Characteristic, while it also has high-intensitive, durability and flexibility.Asbestos mineral is resourceful, can be widely used for a variety of industry
The production of product is padded for 1994 using more especially in the production of fiber reinforcement type waterproof sealing gasket in Klingerit
Using patented in piece production.This non-metallic gasket (the Compressed asbestos produced by compressed ashestos fibre
Fiber CAF) it was once most widely used air locking in the world.In recent years, asbestos healthhazard causes the pass of people
Note, including can cause lung cancer, celiothelioma, asbestosis and pleura variation etc. diseases, make its use in elastomeric pad by
To limitation.In order to produce with the comparable substitute products of CAF performance, the non-asbestos fibers such as aramid fiber and carbon fiber material by
Pay attention to.Since nineteen ninety, many internationally recognizable sealing material manufacturers include U.S. Garlock, Australia Kinger, moral
The Valqua and pilar company of state kempchen and Japan, in novel non-asbestos seal material (Non-asbestos
Sealing composites NASC) field progress numerous studies.Earliest NASC gasket using aramid fiber as reinforcing fiber,
Although aramid fiber has advantage in calendering operation, its thermal stability is poor, and the heat that CAF is not achieved when adhesive elastomer aging is steady
It is qualitative.Recently, Gu&Chen etc. is based on low-cost reinforcing fiber and a variety of reinforcing fiber synergistic action effects, passes through polymerization
The sealed composite material that the molding method of object develops a kind of aramid fiber and composite fibre pre-oxidation treatment is enhanced.Gao and
Chen etc. has carried out the rubber seal composite modification preparation method and nano-filled modification pair using nanon calcium carbonatefilled
The research that gasket material performance influences.Mechanical performance includes compressibility, resilience and stress relaxation ability.These indexs are usually used
Cause gasket material to deform to meet the installation of irregular flange surface to evaluate, keep stress under internal pressure or high temperature,
Keep the sealing surfaces contact of connection close.Sealability is the comprehensive performance of gasket, prevents sealing liquid from connection for showing
Locate the ability of leakage.Sealability is alternatively referred to as leakproofness, can be quantitative determined by seepage velocity.The main component of NASC is
Non-asbestos reinforcing fiber, elastic bonding material, packing material and chemical addition agent.Object between non-asbestos fiber and asbestos fibre
Physicochemical nature difference is very big.Thus, in NASC design, non-asbestos reinforced fiber content and property to the processability of NASC and
The influence of performance is significant.Generally according to the applicable non-asbestos reinforcing fiber of the performance requirement selection of NASC, it is also contemplated that
The compatibility of resistance, length-width ratio, resistance of medium and rubber, the factors such as resource of the good reinforcing fiber of cost performance.Usually used
Non-asbestos reinforcing fiber includes hemicellulose, aramid fiber, glass fibre, carbon fiber, plant fiber etc..Plant fiber is wooden fibre
Dimension raw material obtains one kind after thermo-chemical treatment with cellulose macromolecule fibrous material as main component, has resource rich
The advantages such as richness, reproducible utilization and environmental protection, it is more in the application study of seal washer field in recent years.
Summary of the invention
Then the present invention is existed by adding precipitating reagent, sizing material, retention agent, latex and filler into vegetable-fibre slurry
Shaping and drying obtains plant fiber-based waterproof and sealing material, to solve the above problems.
The present invention provides a kind of preparation method of plant fiber-based waterproof and sealing material, the preparation method includes as follows
Step: vegetable-fibre slurry is impregnated to 3-5h in water and discongested, be beaten and obtain slurry I；Precipitating reagent is added into slurry I, sinks
Agent additive amount in shallow lake is the 1.5-3.5% of oven dry stock quality in slurry I, stirs to get slurry II；Sizing material, glue are added into slurry II
Expect that additive amount is the 0.1-0.3% of oven dry stock quality in slurry I, stirs to get slurry III；Retention agent is added into slurry III, helps
Staying agent additive amount is the 0.05-0.1% of oven dry stock quality in slurry I, stirs to get slurry IV；Latex is added into slurry IV,
Latex additive amount is the 20-50% of oven dry stock quality in slurry I, stirs to get slurry V；Filler, filler are added into slurry V
Additive amount is the 50-80% of oven dry stock quality in slurry I, stirs to get slurry VI；Slurry VI is added in sheet forming apparatus,
It copies and takes page, vacuum drying press polish obtains plant fiber-based waterproof and sealing material.
The present invention is preferably that the preparation method includes the following steps: to impregnate vegetable-fibre slurry into 3-5h in water and dredge
Solution, mashing obtain slurry I；Precipitating reagent is added into slurry I, precipitating reagent additive amount is the 1.5- of oven dry stock quality in slurry I
3.5%, stirring 0.5-2min obtains slurry II；Sizing material is added into slurry II, sizing material additive amount is oven dry stock quality in slurry I
0.1-0.3%, stirring 0.5-2min obtain slurry III；Retention agent is added into slurry III, retention agent additive amount is in slurry I
The 0.05-0.1% of oven dry stock quality, stirring 0.5-2min obtain slurry IV；Latex is added into slurry IV, latex additive amount is
The 20-50% of oven dry stock quality in slurry I, stirring 0.5-2min obtain slurry V；Filler, filler addition are added into slurry V
Amount is the 50-80% of oven dry stock quality in slurry I, and stirring 0.5-2min obtains slurry VI；Slurry VI is added to sheet forming
It in device, copies and takes page, vacuum drying press polish obtains plant fiber-based waterproof and sealing material.
The present invention is preferably that the beating degree is 30-50 ° of SR.
The present invention is preferably that the precipitating reagent is alum or aluminium polychloride.
The present invention is preferably that the sizing material is alkenyl succinic anhydride, gum rosin or alkyl ketene dimer.
The present invention is preferably that the retention agent is cationic polymer, and the cationic polymer is polyacrylamide, gathers
Aziridine, poly- ammonia or cationic modified starch.
The present invention is preferably that the latex is styrene-butadiene latex.
The present invention is preferably that the filler is bentonite, talcum powder or tree peony powder.
The invention has the following beneficial effects:
The raw material sources that the present invention prepares plant fiber-based waterproof and sealing material are extensive, the anti-watertight of the plant fiber-based of preparation
Closure material is at low cost, degradable, environmentally protective, harmless.
Detailed description of the invention
6 width of attached drawing of the present invention,
Fig. 1 is the figure of page tensile index and water resistant time under different beating degrees；
Fig. 2 is the figure of page tensile index and water resistant time under different bentonite consumptions；
Fig. 3 is the figure of page tensile index and water resistant time under different styrene-butadiene latex dosages；
Fig. 4 is the figure of page tensile index and contact angle under different alkenyl succinic anhydride dosages；
Fig. 5 is the figure of page tensile index and contact angle under different alum dosages；
Fig. 6 is the figure of page tensile index and contact angle under different polyacrylamide dosages.
Specific embodiment
Following non-limiting embodiments can with a person of ordinary skill in the art will more fully understand the present invention, but not with
Any mode limits the present invention.
The water content of following commodity needlebush pulpboards is 10%；
The mass fraction of following alum solutions is 1%；
The mass fraction of following polyacrylamide solutions is 0.1%；
The effective component content of following styrene-butadiene latexes is 43%.
Embodiment 1
Influence of the beating degree to page tensile strength and water-resistance
33.3g (being equivalent to over dry 30g) commodity needlebush pulpboard is taken, gross mass 300g is added water to and impregnates 4h and discongest, make
It is beaten under different rotating speeds with PFI fiberizer, and measures beating degree using beating degree analyzer, be ferreted out paper in standard paper machine
Piece, it is dry, measure tensile index and the water resistant time of page, the result is shown in Figure 1.
It is obtained by Fig. 1, the tensile index of page and water resistant time reach maximum value at 37 ° of SR of beating degree.
Embodiment 2
Influence of the filler to page tensile strength and water-resistance
66.6g (being equivalent to over dry 60g) commodity needlebush pulpboard is taken, gross mass 600g is added water to and impregnates 4h and discongest, make
It is beaten under 6500 revolving speeds with PFI fiberizer, makes 37 ° of SR of its beating degree, obtain slurry I；
Slurry I is equally divided into 4 groups, every group is equally divided into 5 parts, and tree peony powder, every part of addition are added into the 1st group of slurry I
0.9g is measured, i.e. tree peony powder additive amount is 30% of oven dry stock quality in page, stirs 2min；Talcum is added into the 2nd group of slurry I
Powder, every part of additive amount 0.9g, i.e. talcum powder additive amount are 30% of oven dry stock quality in page, stir 2min；To the 3rd group of slurry
Bentonite is added in I, every part of additive amount 0.9g, i.e. bentonite additive amount are 30% of oven dry stock quality in page, stir 2min；
4th group is not added filler, is ferreted out the scraps of paper in standard paper machine, dry, is measured tensile index and the water resistant time of page, is as a result seen
Table 1, test data are the arithmetic average of every group of 5 parts of Duplicate Samples.
Table 1
| Tree peony powder | Talcum powder | Bentonite | It is not added with filler | |
| Tensile index (N.m/g) | 51.95 | 50.04 | 39.89 | 58.36 |
| The water resistant time (min) | 0.81 | 1.27 | 2.86 | 1.47 |
It is obtained by table 1, the page tensile index and water resistant time after adding tree peony powder and talcum powder respectively decline；Adding
Page tensile index after adding bentonite is declined, but the water resistant time is significantly increased, and is about not added with 2 times when filler, greatly
The water repelling property of page is improved greatly.
26.6g (being equivalent to over dry 24g) commodity needlebush pulpboard is taken, gross mass 240g is added water to and impregnates 4h and discongest, make
It is beaten under 6500 revolving speeds with PFI fiberizer, makes 37 ° of SR of its beating degree, obtain slurry I；
Slurry I is equally divided into 8 parts, is separately added into 0.3g, 0.6g, 0.9g, 1.2g, 1.5g, 1.8g, 2.1g, 2.4g
Bentonite, i.e. bentonite additive amount be respectively oven dry stock quality in page 10%, 20%, 30%, 40%, 50%, 60%,
70%, 80%, 2min is stirred, is ferreted out the scraps of paper in standard paper machine, it is dry, tensile index and the water resistant time of page are measured, is tied
Fruit sees Fig. 2.
It is obtained by Fig. 2, with the increase of bentonite consumption, the tensile index of page is gradually reduced, after the water resistant time first rises
Decline, and reach maximum value at 60%.
Embodiment 3
Influence of the latex to page tensile strength and water-resistance
20g (being equivalent to over dry 18g) commodity needlebush pulpboard is taken, gross mass 180g is added water to and impregnates 4h and discongest, use
PFI fiberizer is beaten under 6500 revolving speeds, is made 37 ° of SR of its beating degree, is obtained slurry I；
The bentonite of 1.8g is added into slurry I, i.e. bentonite additive amount is 60% of oven dry stock quality in page, stirring
2min obtains slurry II；
Slurry II is equally divided into 6 parts, is separately added into the styrene-butadiene latex of 0.7g, 1.4g, 2.1g, 2.8g, 3.5g, 4.2g,
I.e. styrene-butadiene latex additive amount is respectively 10%, 20%, 30%, 40%, 50%, 60% of oven dry stock quality in page, stirring
2min is ferreted out the scraps of paper in standard paper machine, dry, measures tensile index and the water resistant time of page, as a result sees Fig. 3.
Obtained by Fig. 3, with the increase of styrene-butadiene latex dosage, the tensile index of page and water resistant time first rise after under
Drop, and all reach maximum value at 30%.
Embodiment 4
Influence of the sizing material to page tensile strength and water-resistance
The present embodiment sets the dosage of precipitating reagent and retention agent first, secondly precipitating reagent and retention agent there are the case where
Under, probe into influence of the sizing material to page tensile strength and water-resistance
20g (being equivalent to over dry 18g) commodity needlebush pulpboard is taken, gross mass 180g is added water to and impregnates 4h and discongest, use
PFI fiberizer is beaten under 6500 revolving speeds, is made 37 ° of SR of its beating degree, is obtained slurry I；
3g alum solution is added into slurry I, i.e. alum additive amount is 1% of oven dry stock quality in page, stirs 2min
Obtain slurry II；
2.4g polyacrylamide solution is added into slurry II, i.e. polyacrylamide additive amount is oven dry stock quality in page
0.08%, stirring 2min obtain slurry III；
Slurry III is equally divided into 6 parts, is separately added into 0.024g, 0.048g, 0.072g, 0.096g, 0.120g, 0.144g
Alkenyl succinic anhydride, i.e., alkenyl succinic anhydride additive amount be respectively oven dry stock quality in page 0.05%, 0.10%,
0.15%, 0.20%, 0.25%, 0.30%, 2min is stirred, is ferreted out the scraps of paper in standard paper machine, it is dry, measure the anti-tensile of page
Index and water resistant time, as a result see Fig. 4.
Obtained by Fig. 4, with the increase of alkenyl succinic anhydride dosage, the tensile index of page is gradually reduced, contact angle gradually
Increase, tensile index varies less within the scope of 0.05-0.2%, and contact angle is substantially unchanged after being greater than 0.2%.
Embodiment 5
Influence of the precipitating reagent dosage to page tensile strength and water-resistance
20g (being equivalent to over dry 18g) commodity needlebush pulpboard is taken, gross mass 180g is added water to and impregnates 4h and discongest, use
PFI fiberizer is beaten under 6500 revolving speeds, is made 37 ° of SR of its beating degree, is obtained slurry I；
2.4g polyacrylamide solution is added into slurry I, i.e. polyacrylamide additive amount is oven dry stock quality in page
0.08%, stirring 2min obtain slurry II；
0.096g alkenyl succinic anhydride is added into slurry II, i.e. alkenyl succinic anhydride additive amount is oven dry stock matter in page
The 0.2% of amount, stirring 2min obtain slurry III；
Slurry III is equally divided into 6 parts, is separately added into 1.5g, 3g, 4.5g, 6g, 7.5g, 9g alum solution, is i.e. alum adds
Dosage is 0.5%, 1%, 1.5%, 2%, 2.5%, 3% of oven dry stock quality in page, stirs 2min, copies in standard paper machine
The scraps of paper out, it is dry, tensile index and the water resistant time of page are measured, as a result sees Fig. 5.
It is obtained by Fig. 5, with the increase of alum dosage, the equal first increases and then decreases of tensile index and contact angle of page, and
Reach maximum value at 2.5%.
Embodiment 6
Influence of the retention agent dosage to page tensile strength and water-resistance
26.6g (being equivalent to over dry 24g) commodity needlebush pulpboard is taken, gross mass 240g is added water to and impregnates 4h and discongest, make
It is beaten under 6500 revolving speeds with PFI fiberizer, makes 37 ° of SR of its beating degree, obtain slurry I；
7.5g alum solution is added into slurry I, i.e. alum additive amount is 2.5% of oven dry stock quality in page, stirring
2min obtains slurry II；
0.096g alkenyl succinic anhydride is added into slurry II, i.e. alkenyl succinic anhydride additive amount is oven dry stock matter in page
The 0.2% of amount, stirring 2min obtain slurry III；
Slurry III is equally divided into 8 parts, is separately added into 0.9g, 1.2g, 1.5g, 1.8g, 2.1g, 2.4g, 2.7g, 3g poly- third
Acrylamide solution, i.e. polyacrylamide additive amount be page in oven dry stock quality 0.03%, 0.04%, 0.05%, 0.06%,
0.07%, 0.08%, 0.09%, 0.1%, 2min is stirred, is ferreted out the scraps of paper in standard paper machine, it is dry, measure the anti-tensile of page
Index and water resistant time, as a result see Fig. 6.
It is obtained by Fig. 6, with the increase of polyacrylamide dosage, the tensile index and contact angle of page first increase to be subtracted afterwards
It is small, and reach maximum value at 0.09% and 0.08% respectively.
Embodiment 7
A kind of preparation method of plant fiber-based waterproof sealing gasket, the preparation method include the following steps:
Vegetable-fibre slurry is impregnated to 4h in water and is discongested, is beaten, beating degree is 37 ° of SR, obtains slurry I；
Alum solution is added into slurry I, alum additive amount is 2.5% of oven dry stock quality in slurry I, and stirring 2min is obtained
To slurry II；
Alkenyl succinic anhydride is added into slurry II, alkenyl succinic anhydride additive amount is oven dry stock quality in slurry I
0.2%, stirring 2min obtains slurry III；
Polyacrylamide solution is added into slurry III, polyacrylamide additive amount is oven dry stock quality in slurry I
0.08%, stirring 2min obtains slurry IV；
Styrene-butadiene latex is added into slurry IV, styrene-butadiene latex additive amount is 30% of oven dry stock quality in slurry I, stirring
2min obtains slurry V；
Bentonite is added into slurry V, bentonite additive amount is 60% of oven dry stock quality in slurry I, and stirring 2min is obtained
To slurry VI；
Slurry VI is added in sheet forming apparatus, copies and takes page, vacuum drying press polish obtains the anti-watertight of plant fiber-based
Gasket measures its folding strength, tensile index and contact angle, the results are shown in Table 2, test data is that counting for 5 parts of Duplicate Samples is flat
Mean value.
Table 2
| Folding strength | Tensile index | Contact angle |
| 207 | 70.46 | 115.48 |
Claims (7)
1. a kind of preparation method of plant fiber-based waterproof and sealing material, it is characterised in that: the preparation method includes following step
It is rapid:
Vegetable-fibre slurry is impregnated to 3-5h in water and discongested, be beaten and obtain slurry I；
Precipitating reagent is added into slurry I, precipitating reagent additive amount is the 1.5-3.5% of oven dry stock quality in slurry I, stirs to get slurry
Material II；
Sizing material is added into slurry II, sizing material additive amount is the 0.1-0.3% of oven dry stock quality in slurry I, stirs to get slurry
Ⅲ；
Retention agent is added into slurry III, retention agent additive amount is the 0.05-0.1% of oven dry stock quality in slurry I, is stirred to get
Slurry IV；
Latex is added into slurry IV, latex additive amount is the 20-50% of oven dry stock quality in slurry I, stirs to get slurry V；
Filler is added into slurry V, filler additive amount is the 50-80% of oven dry stock quality in slurry I, stirs to get slurry VI；
Slurry VI is added in sheet forming apparatus, copies and takes page, vacuum drying press polish obtains plant fiber-based waterproof sealing material
Material.
2. the preparation method of plant fiber-based waterproof and sealing material according to claim 1, it is characterised in that: the beating degree
For 30-50 ° of SR.
3. the preparation method of plant fiber-based waterproof and sealing material according to claim 2, it is characterised in that: the precipitating reagent
For alum or aluminium polychloride.
4. the preparation method of plant fiber-based waterproof and sealing material according to claim 3, it is characterised in that: the sizing material is
Alkenyl succinic anhydride, gum rosin or alkyl ketene dimer.
5. the preparation method of plant fiber-based waterproof and sealing material according to claim 4, it is characterised in that: the retention agent
For cationic polymer, the cationic polymer is polyacrylamide, polyethyleneimine, poly- ammonia or cationic modified starch.
6. the preparation method of plant fiber-based waterproof and sealing material according to claim 5, it is characterised in that: the latex is
Styrene-butadiene latex.
7. the preparation method of plant fiber-based waterproof and sealing material according to claim 6, it is characterised in that: the filler is
Bentonite, talcum powder or tree peony powder.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11401661B2 (en) | 2017-11-14 | 2022-08-02 | J & J Green Paper, Inc. | Recyclable composition for waterproofing paper utilizing a plant derived wax, pellets of the composition, recyclable waterproof paper laminate including the composition, recyclable hot beverage cup including the laminate, pod for making hot beverages including the laminate, and drinking straw including the laminate |
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| CN101634120A (en) * | 2009-08-25 | 2010-01-27 | 陕西科技大学 | Method for improving performance of paper stock in retention and drainage aiding |
| CN102181267A (en) * | 2011-03-03 | 2011-09-14 | 姚家祥 | Low-fiber-content high-filler-content sealing pad |
| CN109468873A (en) * | 2018-11-07 | 2019-03-15 | 浙江理工大学 | A kind of modified acrylic fibre paper base rubber composite seal preparation method |
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|---|---|---|---|---|
| CN101575829A (en) * | 2009-05-22 | 2009-11-11 | 昆明理工大学 | Method for preparing copy sheet used for sealing gasket |
| CN101634120A (en) * | 2009-08-25 | 2010-01-27 | 陕西科技大学 | Method for improving performance of paper stock in retention and drainage aiding |
| CN102181267A (en) * | 2011-03-03 | 2011-09-14 | 姚家祥 | Low-fiber-content high-filler-content sealing pad |
| CN109468873A (en) * | 2018-11-07 | 2019-03-15 | 浙江理工大学 | A kind of modified acrylic fibre paper base rubber composite seal preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11401661B2 (en) | 2017-11-14 | 2022-08-02 | J & J Green Paper, Inc. | Recyclable composition for waterproofing paper utilizing a plant derived wax, pellets of the composition, recyclable waterproof paper laminate including the composition, recyclable hot beverage cup including the laminate, pod for making hot beverages including the laminate, and drinking straw including the laminate |
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Application publication date: 20190604 |