CN107603277A - A kind of surface modifying method of calcium carbonate powder - Google Patents
A kind of surface modifying method of calcium carbonate powder Download PDFInfo
- Publication number
- CN107603277A CN107603277A CN201610540725.9A CN201610540725A CN107603277A CN 107603277 A CN107603277 A CN 107603277A CN 201610540725 A CN201610540725 A CN 201610540725A CN 107603277 A CN107603277 A CN 107603277A
- Authority
- CN
- China
- Prior art keywords
- calcium carbonate
- lanthanum nitrate
- surface modifying
- modifying method
- salicylic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention provides a kind of surface modifying method of calcium carbonate powder, comprise the following steps：（1）Calcium carbonate drying, crush, obtain the powder of uniform particle sizes after grinding, then adding in sodium hydrate aqueous solution, being warming up to 80 DEG C, stirring 15 min；（2）Lanthanum nitrate is added, salicylic ethanol solution is slowly added dropwise, the addition for controlling lanthanum nitrate is the 2% of calcium carbonate, while it is 1 to control lanthanum nitrate and salicylic mol ratio:3.9, it is 5 that pH value is adjusted after being added dropwise, and stirs 30min, filtering, obtains modified calcium carbonate.The present invention carries out surface modification using lanthanum nitrate and the generated in-situ complex of salicylic acid to calcium carbonate, and controls lanthanum nitrate excessive on a small quantity, then lanthanum ion can be played with rare earth compounding and acted synergistically, and improve the surface-active of calcium carbonate, and modified effect is good.
Description
Technical field
The invention belongs to Surface Modification of Inorganic Powder field, is related to a kind of surface modifying method of calcium carbonate powder.
Background technology
Calcium carbonate is a kind of cheap, widely used inorganic filler, can be applied in plastics or rubber, is added to modeling
The firm of product, toughness, finish and bending strength can be effectively improved or adjusted in material, are improved processing characteristics, are improved product
Rheological property, dimensional stability and heat-resistant stability, reduce production cost, be added in rubber have reinforcement, filling,
Toning, improve processing skill and the performance of product, rubber can be made easily to be kneaded, be easily scattered, colloid is soft after mixing, rubber surface light
It is sliding, the extensibility, tensile strength and tearing strength of product can be improved.But the hydrophily of calcium carbonate is strong, polarity polymerize than in general
Thing is high, in the process of polymer product, the poor compatibility of polymeric matrix and calcium carbonate, easily causes fault of construction, from
And the mechanical property of product is reduced, and so to prepare the product of good mechanical properties, it is necessary to surface modification is carried out to calcium carbonate, with
Improve the interface cohesion of calcium carbonate and polymer.
In consideration of it, the present invention provides a kind of surface modifying method of calcium carbonate powder, APPLICATION OF RARE-EARTH ELEMENTS and salicylic
Complex is in-situ modified to calcium carbonate progress, to improve its interface binding power with polymer.
The content of the invention
It is an object of the invention to provide a kind of surface modifying method of calcium carbonate powder, the technical matters is simple, modified
Effect is good.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of surface modifying method of calcium carbonate powder, the surface modifying method comprise the following steps：
（1）Calcium carbonate drying, crush, obtain the powder of uniform particle sizes after grinding, then adding in sodium hydrate aqueous solution, heating
To 80 DEG C, 15 min are stirred；
（2）Lanthanum nitrate is added, salicylic ethanol solution is slowly added dropwise, the addition for controlling lanthanum nitrate is the 2% of calcium carbonate, together
When to control lanthanum nitrate and salicylic mol ratio be 1:3.9, it is 5 that pH value is adjusted after being added dropwise, and stirs 30min, filtering, obtains
Modified calcium carbonate.
Preferably, the particle size range of the calcium carbonate powder is 200~2000 mesh.
Beneficial effects of the present invention have：
（1）The present invention carries out surface modification using lanthanum nitrate and the generated in-situ complex of salicylic acid to calcium carbonate, improves carbon
The surface-active of sour calcium, contribute to it scattered in polymeric matrix, promote calcium carbonate in polymer composites
Popularization and application；
（2）Control lanthanum nitrate excessive on a small quantity in the inventive method, then with the presence of lanthanum ion, can be played with rare earth compounding and cooperate with work
With being favorably improved the modified effect to calcium carbonate；
（3）The inventive method is simple, and cost is low, is easy to promote.
Embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with
Embodiment, the present invention is further illustrated.It should be appreciated that embodiment described herein is used only for explaining the present invention,
It is not intended to limit the present invention.
Embodiment
A kind of surface modifying method of calcium carbonate powder, the surface modifying method comprise the following steps：
（1）By particle diameter to obtain the powder of uniform particle sizes after the calcium carbonate drying, crushing, grinding of 600 mesh, hydroxide is then added
In sodium water solution, 80 DEG C are warming up to, stirs 15 min；
（2）Lanthanum nitrate is added, salicylic ethanol solution is slowly added dropwise, the addition for controlling lanthanum nitrate is the 2% of calcium carbonate, together
When to control lanthanum nitrate and salicylic mol ratio be 1:3.9, it is 5 that pH value is adjusted after being added dropwise, and stirs 30min, filtering, obtains
Modified calcium carbonate.
Claims (2)
1. a kind of surface modifying method of calcium carbonate powder, it is characterised in that the surface modifying method comprises the following steps：
（1）Calcium carbonate drying, crush, obtain the powder of uniform particle sizes after grinding, then adding in sodium hydrate aqueous solution, heating
To 80 DEG C, 15 min are stirred；
（2）Lanthanum nitrate is added, salicylic ethanol solution is slowly added dropwise, the addition for controlling lanthanum nitrate is the 2% of calcium carbonate, together
When to control lanthanum nitrate and salicylic mol ratio be 1:3.9, it is 5 that pH value is adjusted after being added dropwise, and stirs 30min, filtering, obtains
Modified calcium carbonate.
2. the surface modifying method of calcium carbonate powder according to claim 1, it is characterised in that the calcium carbonate powder
Particle size range is 200~2000 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610540725.9A CN107603277A (en) | 2016-07-12 | 2016-07-12 | A kind of surface modifying method of calcium carbonate powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610540725.9A CN107603277A (en) | 2016-07-12 | 2016-07-12 | A kind of surface modifying method of calcium carbonate powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107603277A true CN107603277A (en) | 2018-01-19 |
Family
ID=61054702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610540725.9A Pending CN107603277A (en) | 2016-07-12 | 2016-07-12 | A kind of surface modifying method of calcium carbonate powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107603277A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111303523A (en) * | 2020-03-30 | 2020-06-19 | 安徽捷诚包装制品有限公司 | High-strength PE film and preparation process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788410A (en) * | 2014-01-04 | 2014-05-14 | 安徽雪城超细碳酸钙有限公司 | Rare earth compound/titanate coupling agent modified ultrafine calcium carbonate filler |
| CN104479410A (en) * | 2014-11-03 | 2015-04-01 | 重庆和泰塑胶股份有限公司 | Calcium carbonate surface treatment method |
-
2016
- 2016-07-12 CN CN201610540725.9A patent/CN107603277A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788410A (en) * | 2014-01-04 | 2014-05-14 | 安徽雪城超细碳酸钙有限公司 | Rare earth compound/titanate coupling agent modified ultrafine calcium carbonate filler |
| CN104479410A (en) * | 2014-11-03 | 2015-04-01 | 重庆和泰塑胶股份有限公司 | Calcium carbonate surface treatment method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111303523A (en) * | 2020-03-30 | 2020-06-19 | 安徽捷诚包装制品有限公司 | High-strength PE film and preparation process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101456961B (en) | Method for preparing reactive nano calcium carbonate-native rubber composite material | |
| CN104324419B (en) | A kind of injectable nano-hydroxyapatite/chitosan composite aquogel and preparation method thereof and application | |
| CN103788410B (en) | A kind of rare earth compound/titanate coupling agent modified calcium carbonate superfine powder filler | |
| CN101412826B (en) | Rubber / modified starch composite material and preparation thereof | |
| CN105967266A (en) | Efficient sewage treatment agent and preparation method thereof | |
| CN105906854A (en) | Graphene-modified natural latex polymer and modification method thereof | |
| CN105899593B (en) | In the improvement for mixing and processing on the rubber composition containing polar filler | |
| CN103539976B (en) | A kind of preparation method utilizing hydroxyethyl methylacrylate rubber modified graft copolymer nano-calcium carbonate to strengthen native rubber composite material | |
| CN103804553A (en) | Preparation method for graphene/polyvinyl chloride composite material | |
| CN105016647A (en) | Enhanced polycarboxylic acid system concrete reducing agent and preparation method therefor | |
| CN106830043A (en) | A kind of method of surface modified nano calcium carbonate | |
| CN104710661A (en) | carboxy terminated nitrile rubber/graphene nanocomposite and preparation method thereof | |
| CN108727871A (en) | A method of preparing flame retardant type PVC board timber-used calcium carbonate | |
| CN105802598B (en) | Modified alkali lignin plural gel blocking agent of a kind of polyacrylonitrile sodium salt and preparation method thereof | |
| CN105347700B (en) | A kind of preparation method of modified calcium hydroxide | |
| CN106967310B (en) | Dedicated modified calcium carbonate of a kind of paint class and preparation method thereof | |
| CN109971047A (en) | A kind of natural rubber-white carbon black composite material and its preparation method and application | |
| CN103979876B (en) | The method of the shaping quartz sand column of biogum gel material phosphate predeposited method mix | |
| CN102977480B (en) | Method for preparing rubber base material flexible absorbing material | |
| CN107353448B (en) | A kind of natural rubber/modified white carbon black composite material and preparation method | |
| CN107603277A (en) | A kind of surface modifying method of calcium carbonate powder | |
| CN112979198B (en) | Modified montmorillonite self-repairing agent and preparation method and application thereof | |
| CN104059389B (en) | Modified calcium carbonate with improved toughness and preparation method of modified calcium carbonate | |
| CN107674455A (en) | A kind of calcium carbonate modifier and its method of modifying | |
| CN1272377C (en) | Polyvinyl chloride plasticizing enhanced agglomerate and its preparation method and use |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180119 |
|
| WD01 | Invention patent application deemed withdrawn after publication |