CN105155265A - Wollastonite fibers for paper making and preparation method thereof - Google Patents
Wollastonite fibers for paper making and preparation method thereof Download PDFInfo
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- CN105155265A CN105155265A CN201510543309.XA CN201510543309A CN105155265A CN 105155265 A CN105155265 A CN 105155265A CN 201510543309 A CN201510543309 A CN 201510543309A CN 105155265 A CN105155265 A CN 105155265A
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Abstract
The invention discloses a preparation method of wollastonite fibers for paper making. The wollastonite fibers are allowed to form micro-pores through diluted hydrochloric acid aging, the fibers are allowed to form gaps through expansion, flexibility agent prefabricated bodies sufficiently seep into the gaps of the wollastonite fibers under a liquid state, the flexibility agent prefabricated bodies are allowed to form flexible polymer through polymerization or crosslinking, and flexibility of the wollastonite fibers is achieved. The flexible wollastonite fibers special for paper making has the advantages that the flexibility agent is arranged in the micro-pore gaps of the fibers, and the wollastonite fibers can be used in paper making as common plant fibers and is suitable for traditional rosin sizing and alkaline sizing; the wollastonite fibers can be used as the raw materials of thermoplastic-adhering rich mineral paper, resin use amount can be reduced or resin use can be avoided, and the fiber rich mineral paper is formed by interweaving the fibers and thermoplastic adhering.
Description
Technical field
The present invention relates to field of papermaking, be specifically related to natural mineral fiber flexibility, thus become paper making raw material, realize the restriction being completely free of string papermaking.
Background technology
Along with the development of modern humans's civilization, paper is not exclusively confined to write culture field and uses, and becomes the indispensable material in field such as industry, agricultural, business, building industry gradually, and paper requirements amount is also riseing year by year.Because traditional plant fiber papermaking needs to consume a large amount of forest reserves, production process needs to carry out the treatment process such as boiling, bleaching to string, causes serious water pollutions, and the development of therefore traditional string papermaking receives certain restriction.Simultaneously because the demand of different field to paper is different, utilize traditional plant fiber copy paper cannot meet the specific demand of people to paper performance.Therefore, utilize non-plant fibre paper technology to obtain in recent years to develop faster.
Stone paper is with a large amount of inorganic mineral powders (stone powder) and a small amount of resins synthesis, produces the paper similar to wood pulp paper functional characteristic, achieves non-plant fibre papermaking.Although stone paper employs a small amount of resin and do not degrade, along with the development of stone paper technology, current second generation stone paper technology gradually reduces and eliminates resin, and thus, the ultimate development of stone paper uses resin to reduce gradually, finally do not re-use resin.In order to cancel the resin in stone paper, and guarantee intensity, the flexibility of stone paper, mineral fibres becomes the optimum feed stock of stone paper.The patent CN104626438A of applicant discloses a kind of preparation method of fiber stone paper, mineral fibres is formed gelatinization paste, has good ductility can realize mineral fibres papermaking by paste.
Traditional plant fiber papermaking adopts the papermaking technology under water-based pulpous state condition to prepare paper.Its technology also there occurs larger change at present, is mainly reflected in and carries out papermaking with a large amount of mineral fibres replacement Activities of Some Plants fiber.Chinese invention patent CN103508686A discloses the modified mineral fiber that a kind of field of papermaking uses, by electrical absorption with coatedly anion natural adhesive is coated on mineral fiber surfaces is used for papermaking.Chinese invention patent CN102454127B discloses a kind of surface cationic method of modifying being applied to the inorfil of papermaking, by carrying out preliminary treatment with acidic aqueous solution or alkaline aqueous solution to inorfil, obtain pretreated inorfil, stick with paste with cationic starch again and mix, obtain the inorfil of the described surface cationic modification for papermaking.Chinese invention patent CN1242116C discloses a kind of paper grade (stock) modified grammite mineral composition fiber and the method with its papermaking, wollastonite is passed through modification by this invention, the string of the modified grammite mineral composition fiber and 50-95% that add 5-50% in process with slurry, for papermaking, can reduce production cost effectively.
Thus, no matter be stone paper or traditional plant fiber papermaking, all to same future development, wish exactly to replace string by mineral fibres, thus avoid producing water pollutions, destroying the forest reserves.But use mineral fibres papermaking fragility large, rigidity is strong, and the paper paper surface be copied into inorfil is more coarse, easy dry linting, and pliability is poor, unsuitable folding, needs to realize paper flexibility by string, therefore put forward the amount of substituting limited when copy paper; Add man-hour owing to lacking flexibility in stone paper, be easily squeezed, shear and destroy fiber.
Summary of the invention
Current mineral fibres starts to use in stone paper and string field of papermaking.Along with the progressively increase of mineral fibres consumption in papermaking, adopt mineral fibres papermaking even completely, high request is proposed to the pliability of mineral fibres fiber.If mineral fibres is become same string equally there is flexibility, can realize utilizing mineral fibres papermaking completely.Given this, in order to make mineral fibres equally have pliability with string, the invention provides the preparation method of the flexible wollastonite fibre of a kind of paper grade (stock).The special wollastonite fibre of this papermaking is by flexibility agent infiltration in fiber, thus makes the wollastonite fibre of rigidity have flexibility.Paper grade (stock) wollastonite fibre is provided further.
The preparation method of a kind of paper grade (stock) of the present invention wollastonite fibre adopts following technical scheme to realize:
Comprise the following steps:
(1) the wollastonite fibre watery hydrochloric acid of excessive 0.5-1mol/L is carried out dipping pretreatment, be then filtered dry, make the content of watery hydrochloric acid in wollastonite fibre at 5-10%, ageing more than 24 hours in closed container;
(2) the ageing wollastonite fibre that step (1) obtains is added continous mode screw expander, design temperature 120-220 DEG C, form gases at high pressure by the rotation of continous mode rotor of screw expander, by quick pressure releasing, wollastonite fibre is expanded at discharging opening fluffy;
(3) the fluffy wollastonite fibre of expansion that step (2) obtains is mixed with mass ratio 8-12:1 with aqueous flexibility agent precast body, ultrasonic disperse, flexibility agent precast body is made to penetrate into the space of wollastonite fibre, then by being filtered dry, being polymerized or the crosslinked flexibility agent precast body formation flexible polymer making to penetrate into wollastonite fibre space, thus wollastonite fibre is made to possess flexibility.
When preferred paper grade (stock) wollastonite fibre processes bonding stone paper for thermoplastic, flexibility agent precast body selects performed polymer, solution, the monomer of thermoplastic polyester, as lactide, polystyrene solution, acrylic acid;
When preferred paper grade (stock) wollastonite fibre is used for the paper pulp raw material of copy paper under aqueous conditions, flexibility agent precast body selects hydrophilic macromolecule coagulant liquid as polyvinyl alcohol colloid, starch-hydrocolloid, polyacrylamide colloid;
Preferred flexibility agent precast body is the colloidal solution that starch is dissolved in glycerine formation;
Preferred flexibility agent precast body is the one in styrene-butadiene emulsion, benzene emulsion, vinyl acetate emulsion, polyaminoester emulsion.
In above-mentioned preparation method, the continous mode screw expander described in step (2) is the continuous compression decompressor of singe screw, and screw rod adopts wide threaded block, and draw ratio 5-8:1 ensure that Fast Compression, reduces the impact of shearing.
A kind of preparation method of paper grade (stock) wollastonite fibre, wollastonite fibre is made to form pore defect by the ageing of watery hydrochloric acid, and make processbearing astrocyte space by expansion, flexibility agent precast body penetrates sufficiently into the space of wollastonite fibre in the liquid state, and unnecessary precast body can be filtered dry, by being polymerized or the crosslinked precast body polymerization penetrating into fiber, fiber is made to have flexibility, not frangibility, solves the defect of the direct coated soft agent frangibility of current wollastonite fibre.
The paper grade (stock) wollastonite fibre prepared by above-mentioned preparation method, it is characterized in that there is flexibility agent in the defective voids of fiber, the using method that this flexible wollastonite fibre is used for copy paper is identical with common plant fiber, without the need to transforming existing paper making equipment and technological process, be suitable for traditional rosin applying glue and alkaline bleach liquor sizing.Flexible silicon lime stone fibre stuff is as process of plant fiber pulp substitute, and the paper of preparation not only has excellent flexibility, and not dry linting, and intensity is high.This flexible wollastonite fibre is used for the bonding stone paper raw material of thermoplastic, can use less or without resin, be interweaved and thermoplastic bonding formation fiber stone paper by fiber.
A kind of paper grade (stock) wollastonite fibre, by the expansion bug of wollastonite fibre and flexibility agent infiltration, gives the flexibility of wollastonite fibre excellence.Wollastonite fibre simply wrapped up feature outstanding compared with soft sofening treatment and useful effect is with at present existing:
1, a kind of paper grade (stock) wollastonite fibre of the present invention, is by the expansion bug of wollastonite fibre and flexibility agent infiltration, by flexibility agent infiltrated fiber, gives the flexibility of wollastonite fibre excellence.Promote the development adopting mineral fibres substituted plant fiber papermaking completely.
2, a kind of paper grade (stock) wollastonite fibre of the present invention, by wollastonite fibre flexibility process, makes fiber dispersion, cementability promote.
4, the preparation method of a kind of paper grade (stock) wollastonite fibre of the present invention, preparation technology is easily controlled, can the closed production of serialization, is suitable for large-scale production application.
Detailed description of the invention
Below by way of detailed description of the invention, the present invention is described in further detail, but this should be interpreted as scope of the present invention is only limitted to following example.When not departing from said method thought of the present invention, the various replacement made according to ordinary skill knowledge and customary means or change, all should be within the scope of the present invention.
embodiment 1
Specifically comprise the steps:
(1) the wollastonite fibre watery hydrochloric acid of excessive 0.5-1mol/L is carried out immersion 10min preliminary treatment, be then filtered dry, make the content of watery hydrochloric acid in wollastonite fibre 5%, ageing 2 days in closed container;
(2) the ageing wollastonite fibre that step (1) obtains is added the wide threaded block continous mode screw expander that draw ratio is 6:1, design temperature 120 DEG C, form gases at high pressure by the rotation of continous mode rotor of screw expander, by quick pressure releasing, wollastonite fibre is expanded at discharging opening fluffy;
(3) the fluffy wollastonite fibre of expansion that step (2) obtains is mixed with mass ratio 8:1 with amylan body fluid, ultrasonic disperse, starch-hydrocolloid is made to penetrate into the space of wollastonite fibre, then be filtered dry, the crosslinking agent phosphorus oxychloride adding starch quality 2.5% is cross-linked, make the flexibility agent precast body penetrating into wollastonite fibre space form flexible polymer, thus make wollastonite fibre possess flexibility.
embodiment 2
Specifically comprise the steps:
(1) the wollastonite fibre watery hydrochloric acid of excessive 0.5-1mol/L is carried out immersion 15min preliminary treatment, be then filtered dry, make the content of watery hydrochloric acid in wollastonite fibre 8%, ageing 36 hours in closed container;
(2) the ageing wollastonite fibre that step (1) obtains is added continous mode screw expander, design temperature 180 DEG C, form gases at high pressure by the rotation of continous mode rotor of screw expander, by quick pressure releasing, wollastonite fibre is expanded at discharging opening fluffy;
(3) the fluffy wollastonite fibre of expansion step (2) obtained mixes with mass ratio 9:1 with aqueous flexibility agent precast body styrene-butadiene emulsion, ultrasonic disperse, flexibility agent precast body is made to penetrate into the space of wollastonite fibre, then by being filtered dry, the organosilicon cross-linking agent adding styrene-butadiene emulsion quality 1.5% is cross-linked, make the flexibility agent precast body penetrating into wollastonite fibre space form flexible polymer, thus make wollastonite fibre possess flexibility.
embodiment 3
Specifically comprise the steps:
(1) the wollastonite fibre watery hydrochloric acid of excessive 0.5-1mol/L is carried out immersion 30min preliminary treatment, be then filtered dry, make the content of watery hydrochloric acid in wollastonite fibre 10%, ageing more than 24 hours in closed container;
(2) the ageing wollastonite fibre that step (1) obtains is added continous mode screw expander, design temperature 200 DEG C, form gases at high pressure by the rotation of the continous mode rotor of screw expander of screw slenderness ratio 8:1, by quick pressure releasing, wollastonite fibre is expanded at discharging opening fluffy;
(3) the fluffy wollastonite fibre of expansion step (2) obtained mixes with mass ratio 10:1 with aqueous flexibility agent precast body lactide, ultrasonic disperse, flexibility agent precast body is made to penetrate into the space of wollastonite fibre, then by being filtered dry, take ethylene glycol as initator, stannous octoate is catalyst, the lactide performed polymer polymerization making the polymerization of lactide performed polymer make to penetrate into wollastonite fibre space forms flexible polymer, thus makes wollastonite fibre possess flexibility.
embodiment 4
Specifically comprise the following steps:
(1) the wollastonite fibre watery hydrochloric acid of excessive 0.5-1mol/L is carried out immersion 25min preliminary treatment, be then filtered dry, make the content of watery hydrochloric acid in wollastonite fibre 5%, ageing 3 days in closed container;
(2) the ageing wollastonite fibre that step (1) obtains is added continous mode screw expander, design temperature 220 DEG C, form gases at high pressure by the rotation of continous mode rotor of screw expander, by quick pressure releasing, wollastonite fibre is expanded at discharging opening fluffy;
(3) the fluffy wollastonite fibre of expansion step (2) obtained mixes with mass ratio 12:1 with aqueous flexibility agent precast body polyacrylamide colloid, ultrasonic disperse, flexibility agent precast body is made to penetrate into the space of wollastonite fibre, then by being filtered dry, add aluminium salt and the crosslinked flexibility agent precast body formation flexible polymer making to penetrate into wollastonite fibre space occurs, thus make wollastonite fibre possess flexibility.
Claims (8)
1. a preparation method for paper grade (stock) wollastonite fibre, is characterized in that comprising the following steps:
(1) the wollastonite fibre watery hydrochloric acid of excessive 0.5-1mol/L is carried out pre-soaking process, be then filtered dry, make the content of watery hydrochloric acid in wollastonite fibre at 5-10%, ageing more than 24 hours in closed container;
(2) the ageing wollastonite fibre that step (1) obtains is added continous mode screw expander, design temperature 120-220 DEG C, form gases at high pressure by the rotation of continous mode rotor of screw expander, by quick pressure releasing, wollastonite fibre is expanded at discharging opening fluffy;
(3) the fluffy wollastonite fibre of expansion that step (2) obtains is mixed with mass ratio 8-12:1 with aqueous flexibility agent precast body, ultrasonic disperse, flexibility agent precast body is made to penetrate into the space of wollastonite fibre, then by being filtered dry, being polymerized or the crosslinked flexibility agent precast body formation flexible polymer making to penetrate into wollastonite fibre space, thus wollastonite fibre is made to possess flexibility.
2. the preparation method of a kind of paper grade (stock) wollastonite fibre according to claim 1, it is characterized in that: when preferred paper grade (stock) wollastonite fibre processes bonding stone paper for thermoplastic, flexibility agent precast body selects performed polymer, solution, the monomer of thermoplastic polyester.
3. the preparation method of a kind of paper grade (stock) wollastonite fibre according to claim 1, it is characterized in that: when preferred paper grade (stock) wollastonite fibre is used for the paper pulp raw material of copy paper under aqueous conditions, flexibility agent precast body selects polyvinyl alcohol colloid, starch-hydrocolloid, polyacrylamide colloid.
4. the preparation method of a kind of paper grade (stock) wollastonite fibre according to claim 1, is characterized in that: preferred flexibility agent precast body is lactide.
5. the preparation method of a kind of paper grade (stock) wollastonite fibre according to claim 1, is characterized in that: preferred flexibility agent precast body is the colloidal solution that starch is dissolved in glycerine and is formed.
6. the preparation method of the flexible wollastonite fibre of a kind of paper grade (stock) according to claim 1, is characterized in that: preferred flexibility agent precast body is the one in styrene-butadiene emulsion, benzene emulsion, vinyl acetate emulsion, polyaminoester emulsion.
7. the preparation method of a kind of paper grade (stock) wollastonite fibre according to claim 1, is characterized in that: the continous mode screw expander described in step (2) is the continuous compression decompressor of singe screw, and screw rod adopts wide threaded block, draw ratio 5-8:1.
8. a paper grade (stock) wollastonite fibre, is characterized in that: the flexible wollastonite fibre obtained by preparation method's preparation of the paper grade (stock) wollastonite fibre described in above-mentioned any one of 1-7.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568677A (en) * | 2015-12-23 | 2016-05-11 | 成都新柯力化工科技有限公司 | Flexible modification method for microfine inorganic fibers for papermaking |
| CN106436442A (en) * | 2016-12-08 | 2017-02-22 | 姚均甫 | Papermaking method applying wollastonite |
| CN107603483A (en) * | 2017-09-20 | 2018-01-19 | 芜湖光影银幕制造有限公司 | Coating of packing-box design metal entrant sound curtain and preparation method thereof |
| CN109371746A (en) * | 2018-11-01 | 2019-02-22 | 咸阳职业技术学院 | A kind of inorfil softness dispersing agent, preparation method and its application for enhancing inorfil pliability and dispersion performance |
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| CN1515739A (en) * | 2003-01-08 | 2004-07-28 | 云南省非金属矿产应用研究所 | Modified wollastonite mineral composite fibre for making paper and its paper-making process |
| US20070276082A1 (en) * | 2006-05-24 | 2007-11-29 | Kim Balfour | Poly(arylene ether) composition, method, and article |
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| CN103031761A (en) * | 2012-12-05 | 2013-04-10 | 上海华杰泰矿纤科技有限公司 | Preparation method of cationic wollastonite mineral fiber slurry for papermaking |
| CN104313942A (en) * | 2014-10-09 | 2015-01-28 | 济源市金港特纤科技有限公司 | Synthesis method for inorganic fiber softener |
| CN104448388A (en) * | 2014-11-03 | 2015-03-25 | 成都新柯力化工科技有限公司 | Special calcium metasilicate fiber for rich mineral paper and preparation method of special calcium metasilicate fiber |
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2015
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1515739A (en) * | 2003-01-08 | 2004-07-28 | 云南省非金属矿产应用研究所 | Modified wollastonite mineral composite fibre for making paper and its paper-making process |
| US20070276082A1 (en) * | 2006-05-24 | 2007-11-29 | Kim Balfour | Poly(arylene ether) composition, method, and article |
| CN101831843A (en) * | 2010-05-31 | 2010-09-15 | 杭州特种纸业有限公司 | Making process of leather-like paper with high wet strength |
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| CN104313942A (en) * | 2014-10-09 | 2015-01-28 | 济源市金港特纤科技有限公司 | Synthesis method for inorganic fiber softener |
| CN104448388A (en) * | 2014-11-03 | 2015-03-25 | 成都新柯力化工科技有限公司 | Special calcium metasilicate fiber for rich mineral paper and preparation method of special calcium metasilicate fiber |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568677A (en) * | 2015-12-23 | 2016-05-11 | 成都新柯力化工科技有限公司 | Flexible modification method for microfine inorganic fibers for papermaking |
| CN106436442A (en) * | 2016-12-08 | 2017-02-22 | 姚均甫 | Papermaking method applying wollastonite |
| CN107603483A (en) * | 2017-09-20 | 2018-01-19 | 芜湖光影银幕制造有限公司 | Coating of packing-box design metal entrant sound curtain and preparation method thereof |
| CN109371746A (en) * | 2018-11-01 | 2019-02-22 | 咸阳职业技术学院 | A kind of inorfil softness dispersing agent, preparation method and its application for enhancing inorfil pliability and dispersion performance |
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| CN105155265B (en) | 2017-03-01 |
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Effective date of registration: 20180705 Address after: 435104 Daye City, Hubei, Da Ji Pu town Industrial Park Patentee after: Huangshi Haina new Mstar Technology Ltd Address before: 610091 Donghai Road, Jiao long industrial port, Qingyang District, Chengdu, Sichuan 4 Patentee before: Chengdu Xinkeli Chemical Sci-Tech Co., Ltd. |