CN104892986A - Composite flame-retardant activated calcium carbonate - Google Patents
Composite flame-retardant activated calcium carbonate Download PDFInfo
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- CN104892986A CN104892986A CN201510265965.8A CN201510265965A CN104892986A CN 104892986 A CN104892986 A CN 104892986A CN 201510265965 A CN201510265965 A CN 201510265965A CN 104892986 A CN104892986 A CN 104892986A
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Abstract
The invention discloses composite flame-retardant activated calcium carbonate prepared from the following raw materials in parts by weight: 90-110 parts of calcium carbonate, 1-4 parts of sodium dodecyl benzene sulfonate, 1-2 parts of stearic amide, 5-8 parts of granulated graphite, 5-8 parts of antimony trioxide, 0.2-0.4 part of ferric oxide, 2-4 parts of aluminum nitride, 3-5 parts of hydroxy propyl cellulose, 2-4 parts of ammonium persulfate, 0.3-0.5 part of starch, 4-7 parts of stearic acid, 0.3-0.5 part of oxidized polyethylene wax and a proper amount of deionized water.
Description
Technical field
The present invention relates to calcium carbonate field, is exactly a kind of compound flame retardant activity carbonic acid calcium.
Background technology
Activated Calcium carbonate take calcium carbonate as base-material, adopts polyfunctional surfactant and composite efficient processing aid, carry out modified active process form inorganic powder surface.Calcium carbonate powder after modification, surface forms a kind of special cladding structure, significantly can improve the dispersiveness in the polymer matrixs such as polyolefine and affinity, and produce interface interaction between energy and polymer matrix, thus improve the resistance to impact shock of goods, be a kind of incremental filling additive of excellent property.
Summary of the invention
The object of the present invention is to provide a kind of compound flame retardant activity carbonic acid calcium.
Above-mentioned purpose is realized by following scheme:
A kind of compound flame retardant activity carbonic acid calcium, it is characterized in that: it is obtained by the raw material of following weight parts: calcium carbonate 90-110, Sodium dodecylbenzene sulfonate 1-4, stearylamide 1-2, granular graphite 5-8, antimonous oxide 5-8, ferric oxide 0.2-0.4, aluminium nitride 2-4, hydroxypropylcellulose 3-5, ammonium persulphate 2-4, starch 0.3-0.5, stearic acid 4-7, oxidized polyethlene wax 0.3-0.5, deionized water are appropriate.
Described one compound flame retardant activity carbonic acid calcium, is characterized in that: preparation method comprises the following steps:
(1) calcium carbonate is added after in homogenizer, then add Sodium dodecylbenzene sulfonate, stearylamide, oxidized polyethlene wax and stir at 70-90 DEG C under 500-600rpm, obtain modified calcium carbonate for subsequent use;
(2) granular graphite is joined in appropriate amount of deionized water, after stirring at 40-45 DEG C, then hydroxypropylcellulose, ammonium persulphate, starch are added wherein, stir at 45-50 DEG C, obtain combination solution;
(3) modified calcium carbonate and combination solution are mixed, ball milling mixes and obtains mixed slurry, adds all the other raw materials except stearic acid, reacts 50-60min at 35-38 DEG C;
(4) the reacted slurry of step (3) gained leaves standstill 5-8h, dry 4-7 hour at 50-70 DEG C, after vacuum-drying at 80-100 DEG C, obtain compound calcium carbonate powder;
(5) step (4) gained compound calcium carbonate powder is placed on rotary drum, preheating 10-20min at 40-50 rev/min lower 30-40 DEG C, again stearic acid is heated to 70-80 DEG C, atomization, evenly be sprayed on compound calcium carbonate powder, at 30-50 DEG C, 30-40 rev/min is stirred 30-35min, after stopping operating, and standing 20-30min and get final product.
Beneficial effect of the present invention is:
(1) the present invention is by adding antimonous oxide and granular graphite, composite with the calcium carbonate of modification, improves flame retardant properties:
(2) the present invention is dispersed by adding dispersion agent, effectively prevents the autohemagglutination of miniaturization particle, increases its consistency in plastics, rubber and dispersiveness;
(3) the present invention adopts the mode of atomizing spray to make use of stearic acid cmpletely, adopts vacuum drying method, makes to avoid compound powder secondary agglomeration;
(4) product application that obtains of the present invention is in PVC plastic, because the properties-correcting agent of its surface chemistry bonding and PVC plastic have excellent compatibility, show strong interior lubrication, thus weaken the intermolecular reactive force of PVC, system rheological performance is changed, can extruded velocity be improved, make the smooth exquisiteness of products appearance; Also illustrate under equal conditions, modified calcium carbonate can increase loading level, also can reach well cost-saving effect simultaneously.
Embodiment
A kind of compound flame retardant activity carbonic acid calcium, it is obtained by the raw material of following weight (kg): calcium carbonate 90, Sodium dodecylbenzene sulfonate 2, stearylamide 2, granular graphite 5, antimonous oxide 8, ferric oxide 0.4, aluminium nitride 3, hydroxypropylcellulose 5, ammonium persulphate 2, starch 0.3, stearic acid 6, oxidized polyethlene wax 0.5, deionized water are appropriate.
Described one compound flame retardant activity carbonic acid calcium, preparation method comprises the following steps:
(1) calcium carbonate is added after in homogenizer, then add Sodium dodecylbenzene sulfonate, stearylamide, oxidized polyethlene wax stir at 600rpm is lower 90 DEG C, obtains modified calcium carbonate for subsequent use;
(2) granular graphite is joined in appropriate amount of deionized water, after stirring at 45 DEG C, then hydroxypropylcellulose, ammonium persulphate, starch are added wherein, stir at 50 DEG C, obtain combination solution;
(3) modified calcium carbonate and combination solution are mixed, ball milling mixes and obtains mixed slurry, adds all the other raw materials except stearic acid, reacts 50-60min at 38 DEG C;
(4) the reacted slurry of step (3) gained leaves standstill 8h, at 70 DEG C dry 7 hours, after vacuum-drying at 100 DEG C, obtain compound calcium carbonate powder;
(5) step (4) gained compound calcium carbonate powder is placed on rotary drum, preheating 20min at 50 revs/min lower 40 DEG C, then stearic acid is heated to 80 DEG C, atomization, is evenly sprayed on compound calcium carbonate powder, and at 40 DEG C, 40 revs/min are stirred 35min, after stopping operating, standing 30min and get final product.
The activated Calcium carbonate of ordinary calcium carbonate and the present embodiment is pressed formula batch mixing respectively, and room temperature carries out rheological experiment at PLE331 type torque rheometer after placing 8h, and result is as shown in table 1:
Table 1 rheological experiment result
Described material prescription is: PVC 100 parts, one package stabilizer 5 parts, KM355P 6 parts, common CaCO
3or the activated Calcium carbonate 20 parts of the present embodiment
As can be seen from table 1, add the activated Calcium carbonate of the present embodiment compared with ordinary calcium carbonate, moment of torsion reduces, fusion time obviously shortens, and melt temperature declines, and plasticizing rate accelerates, illustrate that activated Calcium carbonate and the PVC plastics Miscibility of the present embodiment are good, be conducive to processing.
Claims (2)
1. a compound flame retardant activity carbonic acid calcium, it is characterized in that: it is obtained by the raw material of following weight parts: calcium carbonate 90-110, Sodium dodecylbenzene sulfonate 1-4, stearylamide 1-2, granular graphite 5-8, antimonous oxide 5-8, ferric oxide 0.2-0.4, aluminium nitride 2-4, hydroxypropylcellulose 3-5, ammonium persulphate 2-4, starch 0.3-0.5, stearic acid 4-7, oxidized polyethlene wax 0.3-0.5, deionized water are appropriate.
2. one according to claim 1 compound flame retardant activity carbonic acid calcium, is characterized in that: preparation method comprises the following steps:
(1) calcium carbonate is added after in homogenizer, then add Sodium dodecylbenzene sulfonate, stearylamide, oxidized polyethlene wax and stir at 70-90 DEG C under 500-600rpm, obtain modified calcium carbonate for subsequent use;
(2) granular graphite is joined in appropriate amount of deionized water, after stirring at 40-45 DEG C, then hydroxypropylcellulose, ammonium persulphate, starch are added wherein, stir at 45-50 DEG C, obtain combination solution;
(3) modified calcium carbonate and combination solution are mixed, ball milling mixes and obtains mixed slurry, adds all the other raw materials except stearic acid, reacts 50-60min at 35-38 DEG C;
(4) the reacted slurry of step (3) gained leaves standstill 5-8h, dry 4-7 hour at 50-70 DEG C, after vacuum-drying at 80-100 DEG C, obtain compound calcium carbonate powder;
(5) step (4) gained compound calcium carbonate powder is placed on rotary drum, preheating 10-20min at 40-50 rev/min lower 30-40 DEG C, again stearic acid is heated to 70-80 DEG C, atomization, evenly be sprayed on compound calcium carbonate powder, at 30-50 DEG C, 30-40 rev/min is stirred 30-35min, after stopping operating, and standing 20-30min and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510265965.8A CN104892986A (en) | 2015-05-25 | 2015-05-25 | Composite flame-retardant activated calcium carbonate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510265965.8A CN104892986A (en) | 2015-05-25 | 2015-05-25 | Composite flame-retardant activated calcium carbonate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106349760A (en) * | 2016-08-05 | 2017-01-25 | 中玺新材料（安徽）有限公司 | High-flame-retardancy composite calcium carbonate and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010022936A2 (en) * | 2008-08-29 | 2010-03-04 | Baerlocher Gmbh | Process for preparing a mixture comprising at least one inorganic solid and at least one fatty acid salt, mixtures prepared correspondingly and use thereof |
| CN103408800A (en) * | 2013-07-03 | 2013-11-27 | 青阳县恒源化工原料有限责任公司 | High-dispersivity modified calcium carbonate for color masterbatches and preparation method thereof |
| CN103772849A (en) * | 2014-01-04 | 2014-05-07 | 安徽雪城超细碳酸钙有限公司 | Flame-retardant zinc stearate modified calcium carbonate filler |
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2015
- 2015-05-25 CN CN201510265965.8A patent/CN104892986A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010022936A2 (en) * | 2008-08-29 | 2010-03-04 | Baerlocher Gmbh | Process for preparing a mixture comprising at least one inorganic solid and at least one fatty acid salt, mixtures prepared correspondingly and use thereof |
| CN103408800A (en) * | 2013-07-03 | 2013-11-27 | 青阳县恒源化工原料有限责任公司 | High-dispersivity modified calcium carbonate for color masterbatches and preparation method thereof |
| CN103772849A (en) * | 2014-01-04 | 2014-05-07 | 安徽雪城超细碳酸钙有限公司 | Flame-retardant zinc stearate modified calcium carbonate filler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106349760A (en) * | 2016-08-05 | 2017-01-25 | 中玺新材料（安徽）有限公司 | High-flame-retardancy composite calcium carbonate and preparation method thereof |
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Application publication date: 20150909 |