CN104804472A - Method for preparing calcium carbonate-based composite powder for reinforcing and toughening PP - Google Patents
Method for preparing calcium carbonate-based composite powder for reinforcing and toughening PP Download PDFInfo
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- CN104804472A CN104804472A CN201510153102.1A CN201510153102A CN104804472A CN 104804472 A CN104804472 A CN 104804472A CN 201510153102 A CN201510153102 A CN 201510153102A CN 104804472 A CN104804472 A CN 104804472A
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Abstract
The invention discloses a method for calcium carbonate-based composite powder for reinforcing and toughening PP. The method comprises the following steps: air drying; graded crushing; mixing; coating; stoving; modification. The method has the benefits that the interaction between calcium carbonate and a PP material is improved; the calcium carbonate-based function is improved by 10 to 30 percent under the condition that the original formula is not changed; the strength and the toughness of the product are improved remarkably.
Description
Technical field
The present invention relates to the preparation method of PP calcium carbonate-base activeness and quietness composite powder, belong to chemical materials manufacturing technology field.
Background technology
Calcium carbonate is the nonmetallic inorganic filler that a kind of consumption is maximum, purposes is the widest, because raw material is wide, price is low, nontoxicity, whiteness are high, is widely used in the fields such as plastics, rubber, papermaking, coating.Because the raw material reserves of China's calcium carbonate are large, quality better, extensive market, there is good development space, in the past in Two decades years, calcium carbonate output and the demand of China all increase sharply, but great majority are all taken as common filler and use, the specific aim of product is not strong, generally belong to low grade products, improve limited to the performance of goods, therefore there is the problems such as the added value of goods is low.Therefore develop high added value series calcium carbonate product to have a bright future, economic benefit is obvious, and can realize domestic low-grade calcium carbonate product update, promotes the development of the relevant industries such as China's calcium carbonate industry and rubber and plastic, coating, papermaking.Calcium carbonate is the nonmetallic inorganic filler that a kind of consumption is maximum, purposes is the widest, because raw material is wide, price is low, nontoxicity, whiteness are high, is widely used in the fields such as plastics, rubber, papermaking, coating.Because the raw material reserves of China's calcium carbonate are large, quality better, extensive market, there is good development space, in the past in Two decades years, calcium carbonate output and the demand of China all increase sharply, but great majority are all taken as common filler and use, the specific aim of product is not strong, generally belong to low grade products, improve limited to the performance of goods, therefore there is the problems such as the added value of goods is low.Therefore develop high added value series calcium carbonate product to have a bright future, economic benefit is obvious, and can realize domestic low-grade calcium carbonate product update, promotes the development of the relevant industries such as China's calcium carbonate industry and rubber and plastic, coating, papermaking.
Calcium carbonate pvc industry to extensively using, but not yet to find broad application in pp Material Manufacturing Process.In recent years, my company, on the basis of in succession developing smc toughness reinforcing calcium carbonate composite powder, the low yellowing antibacterial calcium carbonate function and service powder of air-permeable envelope, PVC advertisement film calcium carbonate-base toughener patent, develops pp calcium carbonate for special use base activeness and quietness composite powder according to the feature of pp is up-to-date.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of preparation method of PP calcium carbonate-base activeness and quietness composite powder.
The present invention is achieved through the following technical solutions.
A preparation method for PP calcium carbonate-base activeness and quietness composite powder, step comprises:
(1) first that raw ore is clean, air-dry, graded crushing, obtains the calcium carbonate superfine powder of particle diameter 22 microns to 5 microns;
(2) classification and removal of impurities at the beginning of using vibratory screening apparatus to carry out the powder pulverized, classification goes out particle diameter, and to be not more than the calcium carbonate of 8 microns for subsequent use;
(3) by percentage to the quality, the zinc oxide colloidal sol ground by colloidal sol or titanium oxide sol, (2) classification go out remaining calcium carbonate, water, grinding distribution agent are mixed into mixture and stir, grain diameter is not more than 30 nanometers, grinding distribution agent is led to for poly carboxylic acid or polyacrylic acid or polyacrylic acid sodium salt, zinc oxide colloidal sol or titanium oxide sol be coated on (2) classification go out in remaining calcium carbonate water-ground limestone surface, coating thickness is 0-300 nanometer, and wherein the particle diameter of zinc oxide colloidal sol or titanium oxide sol is not more than 50 nanometers; (2) classification goes out remaining calcium carbonate, water, zinc oxide colloidal sol or titanium oxide sol, the weight ratio of constituents of grinding distribution agent is 100/50-500/0.1-20/0.05-5;
(4) dried by the product that (3) obtain, bake out temperature remains on 100 DEG C of-320 ° of C;
The good export and import temperature of major control.Inlet temperature is too low, and oven dry benefit is low.Temperature out is too high, easily destroys coating layer, and temperature out is too low, and product moisture content is large;
(5) product after (4) being dried is placed in breaks up modification all-in-one, and after adding (2) calcium carbonate for subsequent use, adding the discharging in 10-30 minute of titanate coupling agent continuation stir about again, the part by weight of the product after oven dry, calcium carbonate for subsequent use, titanate coupling agent is 1:0.5-1:0.01-0.1.
Further, (1) graded crushing is: just break through jaw crusher, then is crushed within 15 millimeters through hammer mill, is claimed to send into large-scale grinding plant by the fine powder within 15 microns by electronics feeding.
Further, (3) zinc oxide colloidal sol be not more than 8% or titanium oxide sol be not more than 25%.
Further, the PH of (3) mixture is neutral or meta-alkalescence.
Further, the coated state of (3) water-ground limestone is coated or half coated state entirely.
Beneficial effect of the present invention:
Improve the blending of calcium carbonate and pp material, increase 10%-30% calcium carbonate-base function and service powder when original formula is constant, the intensity of product and toughness can be made to significantly improve.
Embodiment
According to embodiment, the present invention is described in further detail below.
A preparation method for PP calcium carbonate-base activeness and quietness composite powder, step comprises:
(1) first that raw ore is clean, air-dry, graded crushing, obtains the calcium carbonate superfine powder of particle diameter 22 microns to 5 microns;
(2) classification and removal of impurities at the beginning of using vibratory screening apparatus to carry out the powder pulverized, classification goes out particle diameter, and to be not more than the calcium carbonate of 8 microns for subsequent use;
(3) by percentage to the quality, the zinc oxide colloidal sol ground by colloidal sol or titanium oxide sol, (2) classification go out remaining calcium carbonate, water, grinding distribution agent are mixed into mixture and stir, grain diameter is not more than 30 nanometers, grinding distribution agent is led to for poly carboxylic acid or polyacrylic acid or polyacrylic acid sodium salt, zinc oxide colloidal sol or titanium oxide sol be coated on (2) classification go out in remaining calcium carbonate water-ground limestone surface, coating thickness is 0-300 nanometer, and wherein the particle diameter of zinc oxide colloidal sol or titanium oxide sol is not more than 50 nanometers; (2) classification goes out remaining calcium carbonate, water, zinc oxide colloidal sol or titanium oxide sol, the weight ratio of constituents of grinding distribution agent is 100/50-500/0.1-20/0.05-5;
(4) dried by the product that (3) obtain, bake out temperature remains on 100 DEG C-320 DEG C;
The good export and import temperature of major control.Inlet temperature is too low, and oven dry benefit is low.Temperature out is too high, easily destroys coating layer, and temperature out is too low, and product moisture content is large;
(5) product after (4) being dried is placed in breaks up modification all-in-one, and after adding (2) calcium carbonate for subsequent use, adding the discharging in 10-30 minute of titanate coupling agent continuation stir about again, the part by weight of the product after oven dry, calcium carbonate for subsequent use, titanate coupling agent is 1:0.5-1:0.01-0.1.
(1) graded crushing is: just break through jaw crusher, then is crushed within 15 millimeters through hammer mill, is claimed to send into large-scale grinding plant by the fine powder within 15 microns by electronics feeding.
(3) zinc oxide colloidal sol be not more than 8% or titanium oxide sol be not more than 25%.
(3) PH of mixture is neutral or meta-alkalescence.
(3) coated state of water-ground limestone is coated or half coated state entirely.
Meanwhile, in the preparation method according to PP calcium carbonate-base activeness and quietness composite powder provided by the invention, also need according to according to following content strict implement.
(1) perform strict quality control system (1) and perform strict quality control system
1) in calcium carbonate starting material, strictly choose the starting material meeting purity, whiteness etc. and require, and by the requirement of this Enterprise Product Standards, size distribution is strictly screened;
2) in zinc oxide or the auxiliary material such as titanium oxide, Powdered acrylonitrile-butadiene rubber supply side, determine stable supplier, guarantee stability and the reliability of product, and supplied product is carried out regularly/irregularly detected;
3) manufacturing and adding in the process of auxiliary material at product, strictly follows working specification, and guarantee that each component content of product reaches requirement, and mix, modification is abundant;
4) product quality controls, and adopts online detection instrument well-known in industry, qualified to ensure 100% factory testing;
(2) realization of product manufacture research and technical indicator;
Specifically, successfully prepare the high-quality air-permeable envelope gordian technique of low yellowing antibacterial calcium carbonate base function and service powder (PP calcium carbonate-base activeness and quietness composite powder) and be following aspect:
1) guarantee of calcium carbonate mine quality, this is fundamental prerequisite;
2) pulverizing of calcium carbonate mineral and classification technique, to guarantee that the distribution of particle reaches expection requirement;
3) selection of other additive, proportioning, select which type of additive agent modified and composite between them, the selection also having its consumption is all that this product is successfully crucial;
4) application of modified device and the selection for the treatment of process also determine the quality of product to a great extent.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to allow the personage being familiar with this art can understand content of the present invention and be implemented, can not limit the scope of the invention with this.All equivalences done according to spirit of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (5)
1. a preparation method for PP calcium carbonate-base activeness and quietness composite powder, it is characterized in that, step comprises:
(1) first that raw ore is clean, air-dry, graded crushing, obtains the calcium carbonate superfine powder of particle diameter 22 microns to 5 microns;
(2) classification and removal of impurities at the beginning of using vibratory screening apparatus to carry out the powder pulverized, classification goes out particle diameter, and to be not more than the calcium carbonate of 8 microns for subsequent use;
(3) by percentage to the quality, the zinc oxide colloidal sol ground by colloidal sol or titanium oxide sol, (2) classification go out remaining calcium carbonate, water, grinding distribution agent are mixed into mixture and stir, grain diameter is not more than 30 nanometers, grinding distribution agent is led to for poly carboxylic acid or polyacrylic acid or polyacrylic acid sodium salt, zinc oxide colloidal sol or titanium oxide sol be coated on (2) classification go out in remaining calcium carbonate water-ground limestone surface, coating thickness is 0-300 nanometer, and wherein the particle diameter of zinc oxide colloidal sol or titanium oxide sol is not more than 50 nanometers; (2) classification goes out remaining calcium carbonate, water, zinc oxide colloidal sol or titanium oxide sol, the weight ratio of constituents of grinding distribution agent is 100/50-500/0.1-20/0.05-5;
(4) dried by the product that (3) obtain, bake out temperature remains on 100 DEG C-320 DEG C;
(5) product after (4) being dried is placed in breaks up modification all-in-one, and after adding (2) calcium carbonate for subsequent use, adding the discharging in 10-30 minute of titanate coupling agent continuation stir about again, the part by weight of the product after oven dry, calcium carbonate for subsequent use, titanate coupling agent is 1:0.5-1:0.01-0.1.
2. the preparation method of PP calcium carbonate-base activeness and quietness composite powder according to claim 1, it is characterized in that, (1) graded crushing is: just break through jaw crusher, be crushed within 15 millimeters through hammer mill again, the fine powder within 15 microns is claimed to send into large-scale grinding plant by electronics feeding.
3. the preparation method of PP calcium carbonate-base activeness and quietness composite powder according to claim 1, is characterized in that, (3) zinc oxide colloidal sol be not more than 8% or titanium oxide sol be not more than 25%.
4. the preparation method of PP calcium carbonate-base activeness and quietness composite powder according to claim 1, is characterized in that, the PH of (3) mixture is neutral or meta-alkalescence.
5. the preparation method of PP calcium carbonate-base activeness and quietness composite powder according to claim 1, is characterized in that, the coated state of (3) water-ground limestone is coated or half coated state entirely.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634240A (en) * | 2012-04-28 | 2012-08-15 | 安徽江东科技粉业有限公司 | Preparation method of calcium carbonate based reinforcing agent for PVC (polyvinyl chloride) advertising film |
| CN102660149A (en) * | 2012-04-28 | 2012-09-12 | 安徽江东科技粉业有限公司 | Method for preparing high-fineness calcium carbonate functional composite powder |
| CN102675918A (en) * | 2012-05-04 | 2012-09-19 | 安徽江东科技粉业有限公司 | Preparation method of low-yellowness antibacterial calcium carbonate functional composite powder for ventilated membrane |
| 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 |
| CN103881417A (en) * | 2012-12-24 | 2014-06-25 | 许峰 | Superhigh-fineness calcium carbonate composite powder |
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2015
- 2015-04-01 CN CN201510153102.1A patent/CN104804472A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634240A (en) * | 2012-04-28 | 2012-08-15 | 安徽江东科技粉业有限公司 | Preparation method of calcium carbonate based reinforcing agent for PVC (polyvinyl chloride) advertising film |
| CN102660149A (en) * | 2012-04-28 | 2012-09-12 | 安徽江东科技粉业有限公司 | Method for preparing high-fineness calcium carbonate functional composite powder |
| CN102675918A (en) * | 2012-05-04 | 2012-09-19 | 安徽江东科技粉业有限公司 | Preparation method of low-yellowness antibacterial calcium carbonate functional composite powder for ventilated membrane |
| CN103881417A (en) * | 2012-12-24 | 2014-06-25 | 许峰 | Superhigh-fineness calcium carbonate composite powder |
| 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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