CN104910417A - Expanded graphite containing high weather resistant active calcium carbonate - Google Patents
Expanded graphite containing high weather resistant active calcium carbonate Download PDFInfo
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- CN104910417A CN104910417A CN201510269838.5A CN201510269838A CN104910417A CN 104910417 A CN104910417 A CN 104910417A CN 201510269838 A CN201510269838 A CN 201510269838A CN 104910417 A CN104910417 A CN 104910417A
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- calcium carbonate
- expanded graphite
- stearic acid
- antioxidant
- piperine
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Abstract
The invention discloses an expanded graphite containing high weather resistant active calcium carbonate, which is prepared from the following raw materials by weight part: 70-80 of calcium carbonate, 0.6-0.9 of antioxidant 1046, 0.2-0.4 of antioxidant 1010, 0.2-0.4 of citronellol, 0.4-0.6 of acrylic acid, 0.4-0.6 of dimethyl carbonate, 1-1.5 of piperine, 2-4 of expanded graphite, 4-7 of stearic acid, 0.3-0.5 of oxidized polyethylene wax, 3-5 of hollow ZnO microspheres, and a proper amount of deionized water.
Description
Technical field
The present invention relates to calcium carbonate field, is exactly a kind of high-weatherability activated Calcium carbonate containing expanded graphite.
Background technology
Expanded graphite is Novel carbon material, and as far back as the beginning of the sixties in 19th century, Brodie, by natural graphite and the chemical reagent such as sulfuric acid and nitric acid effect post-heating, has found expanded graphite, but its application is then just starting after death.From then on, numerous country just expands the research and development of expanded graphite in succession, achieves great scientific research and breaks through.
Expanded graphite meet high temperature can moment volumetric expansion 150 ~ 300 times, vermiform is become from sheet, thus it is loosely organized, porous and bending, expanded surface area, surface energy improve, absorption crystalline flake graphite power strengthens, can be fitted together to voluntarily between quasiflake graphite, which increase its flexibility, rebound resilience and plasticity-.
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 high-weatherability activated Calcium carbonate containing expanded graphite.
Above-mentioned purpose is realized by following scheme:
Containing the high-weatherability activated Calcium carbonate of expanded graphite, it is characterized in that: it is obtained by the raw material of following weight parts: calcium carbonate 70-80, oxidation inhibitor 1046 0.6-0.9, antioxidant 1010 0.2-0.4, geraniol 0.2-0.4, vinylformic acid 0.4-0.6, methylcarbonate 0.4-0.6, piperine 1-1.5, expanded graphite 2-4, stearic acid 4-7, oxidized polyethlene wax 0.3-0.5, hollow ZnO microsphere 3-5, deionized water are appropriate.
Described a kind of high-weatherability activated Calcium carbonate containing expanded graphite, is characterized in that: preparation method comprises the following steps:
(1) calcium carbonate is added after in homogenizer, then add oxygen agent 1046, antioxidant 1010, geraniol, vinylformic acid, stir at 70-90 DEG C under 500-600rpm, obtain modified calcium carbonate for subsequent use;
(2) expanded graphite is joined in appropriate amount of deionized water, after stirring at 40-45 DEG C, more hollow ZnO microsphere, methylcarbonate, piperine 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 44-50min at 39-42 DEG C;
(4) the reacted slurry of step (3) gained leaves standstill 5-8h, dry 8-10 hour at 50-60 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 adds expanded graphite, expanded graphite is utilized to meet the characteristic of high-temperature expansion, when making the calcium carbonate that obtains for the preparation of PVC plastic, can be better as compatible in other raw materials while making its lightweight, increase plasticity-, prevent from reuniting, composite the adding of hollow ZnO microsphere and oxidation inhibitor adds weathering resistance of the present invention simultaneously;
(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 high-weatherability activated Calcium carbonate containing expanded graphite, it is obtained by the raw material of following weight (kg): calcium carbonate 80, oxidation inhibitor 1,046 0.9, antioxidant 1010 0.4, geraniol 0.4, vinylformic acid 0.6, methylcarbonate 0.4, piperine 1, expanded graphite 2, stearic acid 4, oxidized polyethlene wax 0.5, hollow ZnO microsphere 3, deionized water are appropriate.
Described a kind of high-weatherability activated Calcium carbonate containing expanded graphite, preparation method comprises the following steps:
(1) calcium carbonate is added after in homogenizer, then add oxygen agent 1046, antioxidant 1010, geraniol, vinylformic acid, stir at 600rpm is lower 70 DEG C, obtain modified calcium carbonate for subsequent use;
(2) expanded graphite is joined in appropriate amount of deionized water, after stirring at 40 DEG C, more hollow ZnO microsphere, methylcarbonate, piperine 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 50min at 40 DEG C;
(4) the reacted slurry of step (3) gained leaves standstill 8h, at 60 DEG C dry 10 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 30 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
Title peak torque/N.m balancing torque/N.m fusion time/S melt temperature/DEG C
Common CaCO
337.4 25.0 150 187
Modification CaCO
332.9 21.8 118 184
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. containing the high-weatherability activated Calcium carbonate of expanded graphite, it is characterized in that: it is obtained by the raw material of following weight parts: calcium carbonate 70-80, oxidation inhibitor 1046 0.6-0.9, antioxidant 1010 0.2-0.4, geraniol 0.2-0.4, vinylformic acid 0.4-0.6, methylcarbonate 0.4-0.6, piperine 1-1.5, expanded graphite 2-4, stearic acid 4-7, oxidized polyethlene wax 0.3-0.5, hollow ZnO microsphere 3-5, deionized water are appropriate.
2. a kind of high-weatherability activated Calcium carbonate containing expanded graphite according to claim 1, is characterized in that: preparation method comprises the following steps:
(1) calcium carbonate is added after in homogenizer, then add oxygen agent 1046, antioxidant 1010, geraniol, vinylformic acid, stir at 70-90 DEG C under 500-600rpm, obtain modified calcium carbonate for subsequent use;
(2) expanded graphite is joined in appropriate amount of deionized water, after stirring at 40-45 DEG C, more hollow ZnO microsphere, methylcarbonate, piperine 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 44-50min at 39-42 DEG C;
(4) the reacted slurry of step (3) gained leaves standstill 5-8h, dry 8-10 hour at 50-60 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.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN115558417A (en) * | 2021-12-13 | 2023-01-03 | 上海纽帕新材料科技有限公司 | Flame-retardant fireproof composition and preparation method thereof |
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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 |
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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 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN115558417A (en) * | 2021-12-13 | 2023-01-03 | 上海纽帕新材料科技有限公司 | Flame-retardant fireproof composition and preparation method thereof |
CN115558417B (en) * | 2021-12-13 | 2023-07-25 | 上海纽帕新材料科技有限公司 | Flame-retardant fireproof composition and preparation method thereof |
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Application publication date: 20150916 |