CN105038322A - Modified calcium carbonate for automobile plastic and preparation method thereof - Google Patents

Modified calcium carbonate for automobile plastic and preparation method thereof Download PDF

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Publication number
CN105038322A
CN105038322A CN201510378842.5A CN201510378842A CN105038322A CN 105038322 A CN105038322 A CN 105038322A CN 201510378842 A CN201510378842 A CN 201510378842A CN 105038322 A CN105038322 A CN 105038322A
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China
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calcium carbonate
parts
modified calcium
deionized water
automobile plastic
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CN201510378842.5A
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李国栋
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Chizhou Qingyang Longyou Calcium Industry Co Ltd
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Chizhou Qingyang Longyou Calcium Industry Co Ltd
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Priority to CN201510378842.5A priority Critical patent/CN105038322A/en
Publication of CN105038322A publication Critical patent/CN105038322A/en
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  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

The invention discloses modified calcium carbonate for automobile plastic and a preparation method thereof. The modified calcium carbonate is characterized by being composed of the following raw materials in parts by weight: 100 to 150 parts of calcium carbonate, 30 to 50 parts of sodium oleate, 0.3 to 0.7 part of sodium dodecyl benzene sulfonate, 1 to 3 parts of sodium bicarbonate, 4 to 8 parts of styrene, 0.02 to 0.05 part of potassium persulfate, 3 to 5 parts of gas-phase silicon dioxide, 2 to 3 parts of organic bentonite, 2 to 4 parts of zinc oxide, 1 to 2 parts of silane coupling agent kh550, 3 to 4 parts of meerschaum powder, and a proper amount of deionized water. The added zinc oxide and meerschaum powder can be bonded to calcium carbonate under the action of coupling agent, thus the sterilizing performance, thermal insulation property, and anticorrosion performance of calcium carbonate are further enhanced, the modified calcium carbonate can be applied to automobile plastic to prolong the service life of automobile shell, at the same time, anti-aging performance and decorative effect of the automobile plastic are also strengthened, the automobile quality is improved therefore, and the modified calcium carbonate is worthy to promote.

Description

A kind of automobile plastic modified calcium carbonate and preparation method thereof
Technical field
The present invention relates to industrial filler field, particularly a kind of automobile plastic modified calcium carbonate and preparation method thereof.
Background technology
Calcium carbonate is as rubber, the filler of plastics, the thermotolerance of goods can be improved, wear resistance, dimensional stability, rigidity and workability, and reduce the cost of goods, but the hydroxyl that its surface has wetting ability stronger, present stronger alkalescence, the affinity of the calcium carbonate that this hydrophilic thin oil properties makes and organic polymer is poor, easy formation aggregate, part in superpolymer is caused to disperse uneven, thus cause boundary defect between bi-material, direct effect is bad, and calcium carbonate is as filler, its acid resistance, slickness, the performances such as whiteness need further raising, therefore, in order to improve the physicals of the strengthening action of calcium carbonate and dispersing property in the composite and modified calcium carbonate filled composite materials, be necessary to adopt different surface-modifying agents and treatment process to carry out surface modification to calcium carbonate powders, and then widen the Application Areas of calcium carbonate.
Polymer/inorganic particle matrix material is a kind of type material, which overcome simple inorganic particulate not easily to process, organic polymer intensity is lower, the shortcomings such as less stable, under synergistic effect, can obtain upgrading than inorganic particulate and organic polymer, more excellent performance, improve the stability of composite prod and the dispersiveness in organic phase, the performances such as physical strength, the present invention adopts polymer overmold modified calcium carbonate, solve the hydrophilic oleophobic of carbonic acid carbon, dispersed bad, free settling, physical strength is not high, the problems such as enhancement cannot be reached with polymer compatibility difference, improve the range of application of calcium carbonate.
Summary of the invention
The object of this invention is to provide a kind of automobile plastic modified calcium carbonate and preparation method thereof.In order to realize object of the present invention, the present invention is by following scheme implementation:
A kind of automobile plastic modified calcium carbonate and preparation method thereof, is made up of the raw material of following weight part: calcium carbonate 100-150, sodium oleate 30-50, Sodium dodecylbenzene sulfonate 0.3-0.7, sodium bicarbonate 1-3, vinylbenzene 4-8, Potassium Persulphate 0.02-0.05, aerosil 3-5, organobentonite 2-3, zinc oxide 2-4, silane coupling agent kh5501-2, sepiolite powder 3-4, deionized water are appropriate;
A kind of automobile plastic modified calcium carbonate of the present invention and preparation method thereof, be made up of following concrete steps:
(1) sodium oleate is added the aqueous solution sodium oleate that deionized water dissolving makes 1%, electric stirring 10min raised temperature to 60 ° C, add calcium carbonate and stir 1.5h, stirred suction filtration after rear standing 4-6h, with deionized water wash, dry for standby under 80 ° of C in an oven;
(2) modified calcium carbonate obtained for step (1) is added in the four-necked bottle with driven stirring rod and reflux condensing tube, adding appropriate water stirring makes modified calcium carbonate become slurries, stirring is stopped to add Sodium dodecylbenzene sulfonate and sodium bicarbonate, vinylbenzene is added after stirring 0.5h in a nitrogen atmosphere, persulfate aqueous solution is dripped after mixture being warming up to 80 ° of C, constant temperature is centrifugal after keeping 80 ° of C8h, with dry under 80 ° of C in an oven after deionized water rinsing, after to be ground into 300-400 order for subsequent use;
(3) the methanol solution activation 0.5h of 3-5 times amount is added after organobentonite and aerosil being mixed, 5 μm are less than to particle diameter again at grinding machine for grinding 2-3h, add deionized water ultrasonic disperse more even, transfer in flask the product adding step (2) gained again, raised temperature is to 80-100 ° of C, the ultrasonic methyl alcohol that is back to volatilizees, and dries product;
(4) by remaining mixing of materials, stir when being heated to 40-60 ° of C, then the product adding step (3) gained is under the rotating speed of 1300-1500 rev/min, stirs 8-10min, naturally cool to room temperature after insulation 10-15min, grind to form nanometer powdery.
Advantage of the present invention is: the present invention's sodium oleate makes calcium carbonate surface organise as properties-correcting agent, calcium carbonate particles surface is made to have certain hydrophobicity, and double bond is introduced calcium carbonate surface, using modified calcium carbonate particle as seed, the method of letex polymerization has prepared polystyrene coated caco3 composite particles, enhance the consistency of calcium carbonate and polymkeric substance, and easily disperse, not easily reunite, physical strength is high, the present invention is also by aerosil and organobentonite activation aftertreatment modified calcium carbonate, silicon-dioxide is made to stick to the surface of calcium carbonate, not free settling, be uniformly dispersed, suspension stability is good, and further enhancing the oilness of calcium carbonate, water tolerance and high thermal resistance, calcium carbonate is had a wide range of applications in the industry, the zinc oxide added and sepiolite powder bond with calcium carbonate under the effect of coupling agent, further enhance the bactericidal properties of calcium carbonate, heat insulation, erosion-resisting function, for the work-ing life of housing can be extended during automobile plastic, anti-aging, good decorative property, improve the quality of automobile, be worthy to be popularized.
Specific embodiments
Below by specific examples, the present invention is described in detail.
A kind of automobile plastic modified calcium carbonate and preparation method thereof, is made up of the raw material of following weight part (kilogram): calcium carbonate 150, sodium oleate 45, Sodium dodecylbenzene sulfonate 0.6, sodium bicarbonate 2, vinylbenzene 7, Potassium Persulphate 0.04, aerosil 5, organobentonite 3, zinc oxide 4, silane coupling agent kh5501, sepiolite powder 3, deionized water are appropriate;
A kind of automobile plastic modified calcium carbonate of the present invention and preparation method thereof, be made up of following concrete steps:
(1) sodium oleate is added the aqueous solution sodium oleate that deionized water dissolving makes 1%, electric stirring 10min raised temperature to 60 ° C, add calcium carbonate and stir 1.5h, stirred suction filtration after rear standing 6h, with deionized water wash, dry for standby under 80 ° of C in an oven;
(2) modified calcium carbonate obtained for step (1) is added in the four-necked bottle with driven stirring rod and reflux condensing tube, adding appropriate water stirring makes modified calcium carbonate become slurries, stirring is stopped to add Sodium dodecylbenzene sulfonate and sodium bicarbonate, vinylbenzene is added after stirring 0.5h in a nitrogen atmosphere, persulfate aqueous solution is dripped after mixture being warming up to 80 ° of C, constant temperature is centrifugal after keeping 80 ° of C8h, with dry under 80 ° of C in an oven after deionized water rinsing, after to be ground into 400 orders for subsequent use;
(3) the methanol solution activation 0.5h of 5 times amount is added after organobentonite and aerosil being mixed, 5 μm are less than to particle diameter again at grinding machine for grinding 2h, add deionized water ultrasonic disperse more even, transfer in flask the product adding step (2) gained again, raised temperature to 100 ° C, the ultrasonic methyl alcohol that is back to volatilizees, and dries product;
(4) by remaining mixing of materials, stir when being heated to 40 ° of C, then the product adding step (3) gained is under the rotating speed of 1500 revs/min, stirs 8min, naturally cool to room temperature after insulation 10min, grind to form nanometer powdery.
The modified calcium carbonate produce the present invention and unmodified calcium carbonate performance compare, obtain modified calcium carbonate and reduce 51.9% than unmodified calcium carbonate oil-absorption(number), settling volume reduces 62.7%, viscosity reduces 58.2%, and tap density reduces 16.9%, and modified calcium carbonate oleophilic drainage is described, good with polymer compatibility, and tap density diminishes, illustrate that calcium carbonate dispersing property is good, not easily reunite.

Claims (2)

1. automobile plastic modified calcium carbonate and preparation method thereof, it is characterized in that, be made up of the raw material of following weight part: calcium carbonate 100-150, sodium oleate 30-50, Sodium dodecylbenzene sulfonate 0.3-0.7, sodium bicarbonate 1-3, vinylbenzene 4-8, Potassium Persulphate 0.02-0.05, aerosil 3-5, organobentonite 2-3, zinc oxide 2-4, silane coupling agent kh5501-2, sepiolite powder 3-4, deionized water are appropriate.
2. a kind of automobile plastic modified calcium carbonate and preparation method thereof according to claim 1, is characterized in that, be made up of following concrete steps:
(1) sodium oleate is added the aqueous solution sodium oleate that deionized water dissolving makes 1%, electric stirring 10min raised temperature to 60 ° C, add calcium carbonate and stir 1.5h, stirred suction filtration after rear standing 4-6h, with deionized water wash, dry for standby under 80 ° of C in an oven;
(2) modified calcium carbonate obtained for step (1) is added in the four-necked bottle with driven stirring rod and reflux condensing tube, adding appropriate water stirring makes modified calcium carbonate become slurries, stirring is stopped to add Sodium dodecylbenzene sulfonate and sodium bicarbonate, vinylbenzene is added after stirring 0.5h in a nitrogen atmosphere, persulfate aqueous solution is dripped after mixture being warming up to 80 ° of C, constant temperature is centrifugal after keeping 80 ° of C8h, with dry under 80 ° of C in an oven after deionized water rinsing, after to be ground into 300-400 order for subsequent use;
(3) the methanol solution activation 0.5h of 3-5 times amount is added after organobentonite and aerosil being mixed, 5 μm are less than to particle diameter again at grinding machine for grinding 2-3h, add deionized water ultrasonic disperse more even, transfer in flask the product adding step (2) gained again, raised temperature is to 80-100 ° of C, the ultrasonic methyl alcohol that is back to volatilizees, and dries product;
(4) by remaining mixing of materials, stir when being heated to 40-60 ° of C, then the product adding step (3) gained is under the rotating speed of 1300-1500 rev/min, stirs 8-10min, naturally cool to room temperature after insulation 10-15min, grind to form nanometer powdery.
CN201510378842.5A 2015-07-02 2015-07-02 Modified calcium carbonate for automobile plastic and preparation method thereof Pending CN105038322A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107445187A (en) * 2017-06-27 2017-12-08 徐剑霞 A kind of preparation method of oyster shell whiting modified calcium carbonate
CN110713391A (en) * 2019-10-11 2020-01-21 成都新柯力化工科技有限公司 Light cement insulation board for energy-saving building and preparation method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104031417A (en) * 2014-05-20 2014-09-10 凤台精兴生物科技有限公司 Modified calcium carbonate with heat-isolating heat-insulating effect and preparation method thereof
CN104312212A (en) * 2014-09-28 2015-01-28 安徽盛佳彩印包装有限公司 Corrosion-resistant modified calcium carbonate with good comprehensive properties and preparation method of modified calcium carbonate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104031417A (en) * 2014-05-20 2014-09-10 凤台精兴生物科技有限公司 Modified calcium carbonate with heat-isolating heat-insulating effect and preparation method thereof
CN104312212A (en) * 2014-09-28 2015-01-28 安徽盛佳彩印包装有限公司 Corrosion-resistant modified calcium carbonate with good comprehensive properties and preparation method of modified calcium carbonate

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
徐峰: "《建筑涂料生产与施工技术百问》", 31 December 2002 *
盛野: "《吉林大学博士学位论文》", 31 December 2006 *
阳铁健: "《纳米碳酸钙表面改性技术研究进展》", 《无机盐工业》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107445187A (en) * 2017-06-27 2017-12-08 徐剑霞 A kind of preparation method of oyster shell whiting modified calcium carbonate
CN110713391A (en) * 2019-10-11 2020-01-21 成都新柯力化工科技有限公司 Light cement insulation board for energy-saving building and preparation method

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