CN1525005A - Active composite mineral reinforcing filling material for paper making - Google Patents
Active composite mineral reinforcing filling material for paper making Download PDFInfo
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- CN1525005A CN1525005A CNA031065465A CN03106546A CN1525005A CN 1525005 A CN1525005 A CN 1525005A CN A031065465 A CNA031065465 A CN A031065465A CN 03106546 A CN03106546 A CN 03106546A CN 1525005 A CN1525005 A CN 1525005A
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- paper
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- filler
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Abstract
The invention is a papermaking compound mineral enhanced filling, selecting natural minerals of different forms, structures and components to mix in a proper proportion; using dry mechanical chemical modifying method and selecting reasonable surface-active agent and cation aggregating agent to make activation treatment. It has low cost and large activity, applied to papermaking process technique and easy to combine with paper fiber; its advantages: it has high mineral filling retention; it can heighten the mechanical performances of the paper of breaking length, tearing strength, surface strength, etc; heighten the physical performances of the paper of whiteness, opacity, glossiness, smoothness, etc; heighten corrosion resisting property of the paper; heighten ash and basis weight of the paper; reduce printing ink absorption of the paper; reduce the paper cost; etc.
Description
The active complex mineral reinforcer of paper grade (stock) belongs to a kind of of mineral filler in the Inorganic Non-metallic Materials.Because it is much lower that the cost of mineral filler (particularly being raw material with the natural minerals) is compared with paper pulp, mineral filler can also improve the partial properties of paper simultaneously.Therefore, the mineral filler of dosing as much as possible is a common interested problem in present international and domestic paper-making industry and the mineral material developmental research in paper-making process.
Existing paper grade (stock) inorganic mineral filler has calcium carbonate, talcum, kaolin etc., the research worker who also has has used wollastonite, tremolite powder to carry out the filling test of paper pulp, but all be to be raw material with wherein a certain mineral, and most not good enough without activation processing or treatment effect, thereby have following shortcoming:
1. the density of paper is that quantitative raising degree is little.Because single mineral are compared with complex mineral, structure matching is poor, causes the density of filler itself relatively poor, finally can influence the density of paper.
2. the retention of filler is low.Because the dispersiveness of mineral filler in water compared with the paper fiber and differed greatly, the sinking speed of filler is than big many of paper fiber, and filler can run off in advance in paper-making process, causes the retention of filler in paper very low.
3. reduction strength of paper.Because the mineral grain great majority are all electronegative, and paper pulp fiber itself is also electronegative, electric charge repels mutually, causes the adhesion between filler and the paper fiber very weak.Therefore, make every mechanical properties decrease of paper.Simultaneously, make that also retention further descends.
Because above shortcoming makes the application of mineral filler in paper-making industry also have significant limitation.Up to the present, application quantity and application surface are all also very little.
The development purpose of this " filler " is in order to overcome the above-mentioned shortcoming of existing filler, a kind of scientific and reasonable, high-efficiency reliable papermaking filler to be provided.
This " filler " selects the raw mineral materials (comprising fibrous, granular, sheet) of different shape, structure with suitable mixed, adopt rational method of modifying (mechanical force---chemical modification) and activating agent, change mixed structure, the physical and chemical performance of filler.Make its with paper pulp mixed process in can with the behavior basically identical of paper fiber in the aqueous solution, in machine hand's skill process, can combine with the paper fibre compact, improve paper quality and filling effect, reduce paper cost.
Active complex mineral filler has following advantage:
1. raw material morphosis reasonable mixture ratio.Adopt fibrous, granular, sheet to mix, structurally realized complementation, guaranteed the closestpacking of structure with certain proportion.Therefore, can improve the density of paper, quantitative and ash content.
2. the mineral structure of raw material and composition are reasonable.Material choice the carbonate mineral that has the silicate of duplex structure and layer structure and have a trigonal system be base-material.Particularly in two kinds of silicate mineral structures, all contain hydroxyl and loosely organized band, be beneficial to the modification of " filler ".
3. " filler " good dispersion in water can satisfy the process engineering of papermaking.Utilize suitable surfactant that " filler " handled, changed the dispersity of mineral grain in water, its sinking speed in water is obviously descended, consistent with the fiber of paper fiber in water as far as possible, be beneficial to processing.
4. " filler " combines with the paper fiber is easy.Select suitable CATION aggregating agent prepared therefrom that " filler " handled, make the surperficial positively charged of " filler ", be beneficial to electronegative paper fiber and combine.Thereby breaking length, tearing strength of paper etc. have been improved.
5. activation has improved " retention of filler ".This " filler " changed the behavior state of mineral in water through after the activation processing, improved " filler " adhesion with the paper fiber, must improve the retention of filler in the paper fiber.
6. the hardness of " filler " is big.Because the hardness of selected natural minerals is much larger than the hardness of paper fiber, so can improve the surface strength, wear strength etc. of paper.
7. the chemical stability of " filler " is strong.Be that the basis " filler " of principal component is compared with pure carbon hydrochlorate filler and had very strong acid resistance with silicate, can improve the resistance to acids and bases of paper.
8. " filler " can improve paper of whiteness and opacity.Because selected raw material all is a transparent mineral, advantages of good crystallization, purity height.So whiteness height.Simultaneously, because the refractive index difference of three kinds of mineral can produce climing reflection when light sees through.Therefore, can improve the opacity and the whiteness of paper.
9. " filler " can improve smoothness of paper.Owing to selected the very strong mineral of soapy feeling for use in " filler ", smoothness of paper is improved with layer structure.
10. " filler " can improve the glossiness of paper.Because comparing with the paper fiber, the reflectivity of day mineral wants big, so its glossiness will be got well.
11. " filler " can reduce the K.N absorption of inks value of paper.Because the oil absorption of mineral is poor, so can reduce the absorption of inks value of paper greatly in printing engineering.
12. the method for modifying of " filler " is simple, cost is low.Utilize the dry process mechanical force and chemical method of modifying that mixed fillers is carried out activation processing, can in the material crushing process, carry out simultaneously.Removed wet-process modified drying course from, also the self-contained process that stirs without the dry method height can be saved cost greatly.
Claims (3)
1. the material choice and the proportioning of the active complex mineral reinforcer of paper grade (stock), mineral by fibrous, sheet and granular three kinds of structures are formed by a certain percentage, be characterized as: the raw material mineral structure mates mutually, evenly mix with grating in certain proportion, but the implementation structure closestpacking improves strength of paper.
2. adopt suitable reagent and method to make the mix surface activation, it is characterized by: can improve the surface-activity of complex mineral filler, improve its dispersiveness and specific area in water, consistent with the settling velocity of paper pulp as far as possible.
3. adopt the CATION aggregating agent prepared therefrom that filler is rationally handled, it is characterized in that: improve the surface charge of mineral,, filler and paper pulp are combined closely, the quality of raising paper to reach the electroneutral with paper pulp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031065465A CN1525005A (en) | 2003-03-02 | 2003-03-02 | Active composite mineral reinforcing filling material for paper making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031065465A CN1525005A (en) | 2003-03-02 | 2003-03-02 | Active composite mineral reinforcing filling material for paper making |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1525005A true CN1525005A (en) | 2004-09-01 |
Family
ID=34282768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031065465A Pending CN1525005A (en) | 2003-03-02 | 2003-03-02 | Active composite mineral reinforcing filling material for paper making |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1525005A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680186B (en) * | 2007-06-08 | 2012-07-04 | Fp创新研究中心 | Latex-treated filler slurries for use in papermaking |
-
2003
- 2003-03-02 CN CNA031065465A patent/CN1525005A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680186B (en) * | 2007-06-08 | 2012-07-04 | Fp创新研究中心 | Latex-treated filler slurries for use in papermaking |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |