CN104130592A - Modified calcium carbonate with good elasticity and preparation method thereof - Google Patents

Abstract

Disclosed modified calcium carbonate with good elasticity is characterized by being prepared from the following raw materials in parts by weight: 85-90 parts of calcium carbonate, 5.5-7 parts of polyvinyl chloride, 5-7 parts of transparent ABS, 4-6 parts of synthetic rubber, 2-3 parts of calcium carbide slag, 1.5-2.5 parts of crude aggregate, 3-5 parts of teflon, 2-3 parts of cationic starch, 2-3 parts of sulfonated lignin, and 2.5-3.5 parts of modified titanium dioxide. By adding transparent ABS and other macromolecular compounds, synthetic rubber and the like into calcium carbonate, calcium carbonate is substantially improved in rigidity, elasticity and stability, also has the characteristics of toughening, reinforcing and relatively good strength, and also is reduced in cost. The provided preparation method is simple and convenient to operate, and is easy to industrialize. The produced filling material is applicable to coatings, rubber, plastic and the like.

Description

Modified calcium carbonate of a kind of good springiness and preparation method thereof

Technical field

The present invention relates to the modified calcium carbonate in industrial filler field, particularly a kind of good springiness and preparation method thereof.

Background technology

Calcium carbonate is because good stability, simple, the low abrasion of color and luster, easily processing, nontoxic, wide material sources, the plurality of advantages such as cheap are commonly used to the material such as filled plastics, rubber, the effect that play increase-volume, increment, reduces production costs.But due to its surface hydrophilic oleophobic and easily reunion, different from the interfacial property of organic polymer, consistency is poor, directly or too much fills and easily causes material mechanical performance to decline.Can improve its surface properties by modification, improve dispersed, with the over-all properties such as the physical strength of polymer interface consistency and material.Changing the performance of traditional calcium carbonate product, improve its application performance to meet the needs of novel material, development of new techniques, is calcium carbonate industry urgent problem.

Summary of the invention

The object of this invention is to provide modified calcium carbonate of a kind of good springiness and preparation method thereof.

In order to realize object of the present invention, the present invention passes through following scheme implementation:

A modified calcium carbonate for good springiness, is made up of the raw material of following weight part: calcium carbonate 85-90, polyvinyl chloride 5.5-7, transparent ABS 5-7, synthetic rubber 4-6, carbide slag 2-3, coarse aggregate 1.5-2.5, tetrafluoroethylene 3-5, cationic starch 2-3, sulfonated lignin 2-3, modifying titanium dioxide 2.5-3.5;

Described modifying titanium dioxide is made up of the raw material of following weight part: nano titanium oxide 50-60, mica powder 2-4, pulverizing zeolite molecular sieve 4-6, ferrocene 5-7, mineral fibre 3-4, trisodium phosphate 2-3, pure-acrylic emulsion 3-4, epoxyoleic acid butyl ester 3-5, phosphoric acid ester 2-4, water 50-60; First preparation method adds pure-acrylic emulsion, nano titanium oxide, mica powder, pulverizing zeolite molecular sieve, mineral fibre, water to stir, form suspension, then add immediately ferrocene, epoxyoleic acid butyl ester, be heated to 120-140 DEG C, mix and blend 25-35 minute, is cooled to room temperature, then add all the other remaining components, under 1200-1500 rev/min of condition, stir, at 60-70 DEG C, dry, be ground into ultrafine powder and get final product.

The modified calcium carbonate of a kind of good springiness of the present invention, made by following concrete steps:

(1) calcium carbonate, carbide slag, coarse aggregate, cationic starch, sulfonated lignin are mixed and added in shredder, grind 15-20 minute with the speed of 1500-2000 rev/min, take out and dry, pulverize porphyrize, cross 100-200 mesh sieve, obtain mixed powder stand-by;

(2) polyvinyl chloride, transparent ABS powder are put into mixing tank, be warming up between 80-90 DEG C, mix and blend half an hour, continue to add synthetic rubber, tetrafluoroethylene, continue to be warming up to 130-160 DEG C, mix and pour out after 15-20 minute, obtain material modified;

(3) mixed powder is mixed with material modified, add suitable quantity of water, stir and grind 2-3 hour, form suspension stand-by;

(4) suspension is mixed with modifying titanium dioxide, stir 10-15 minute under 800-1000 rev/min, dry, be ground into 200-400 order powder and get final product.

The invention has the beneficial effects as follows: the present invention adds macromolecular compound, the synthetic rubber etc. such as transparent ABS in calcium carbonate, not only can improve widely rigidity, elasticity and the stability of calcium carbonate, and there is feature toughness reinforcing, that strengthen and keep better intensity, also reduce cost simultaneously.Preparation method provided by the invention is simple and easy to operate, is easy to realize industrialization, and the filler of production is applicable to coating, rubber, plastics etc.

Specific embodiments

Below by specific examples, the present invention is described in detail.

A modified calcium carbonate for good springiness, by following weight part (kilogram) raw material make: calcium carbonate 85, polyvinyl chloride 5.5, transparent ABS 5, synthetic rubber 4, carbide slag 2, coarse aggregate 1.5, tetrafluoroethylene 3, cationic starch 2, sulfonated lignin 2, modifying titanium dioxide 2.5;

Described modifying titanium dioxide by following weight part (kilogram) raw material make: nano titanium oxide 50, mica powder 2, pulverize zeolite molecular sieve 4, ferrocene 5, mineral fibre 3, trisodium phosphate 2, pure-acrylic emulsion 3, epoxyoleic acid butyl ester 3, phosphoric acid ester 2, water 50; First preparation method adds pure-acrylic emulsion, nano titanium oxide, mica powder, pulverizing zeolite molecular sieve, mineral fibre, water to stir, form suspension, then add immediately ferrocene, epoxyoleic acid butyl ester, be heated to 120-140 DEG C, mix and blend 25-35 minute, is cooled to room temperature, then add all the other remaining components, under 1200-1500 rev/min of condition, stir, at 60-70 DEG C, dry, be ground into ultrafine powder and get final product.

The modified calcium carbonate of a kind of good springiness of the present invention, made by following concrete steps:

(1) calcium carbonate, carbide slag, coarse aggregate, cationic starch, sulfonated lignin are mixed and added in shredder, grind 15-20 minute with the speed of 1500-2000 rev/min, take out and dry, pulverize porphyrize, cross 100-200 mesh sieve, obtain mixed powder stand-by;

(2) polyvinyl chloride, transparent ABS powder are put into mixing tank, be warming up between 80-90 DEG C, mix and blend half an hour, continue to add synthetic rubber, tetrafluoroethylene, continue to be warming up to 130-160 DEG C, mix and pour out after 15-20 minute, obtain material modified;

(3) mixed powder is mixed with material modified, add suitable quantity of water, stir and grind 2-3 hour, form suspension stand-by;

(4) suspension is mixed with modifying titanium dioxide etc., stir 10-15 minute under 800-1000 rev/min, dry, be ground into 200-400 order powder and get final product.

Performance Detection to modified calcium carbonate of the present invention and ordinary calcium carbonate is compared as follows:

First measure the tap density of the forward and backward calcium carbonate of modification, then calcium carbonate good modification and unmodified water-ground limestone are joined in polyvinyl chloride resin in 15% ratio respectively, make sample, test respectively both mechanical properties, comparing result sees the following form:

As can be seen from the above table, the loose bulk density of the calcium carbonate after modification diminishes, and illustrates that calcium carbonate split fully disperses, and it can also be seen that every mechanical property of calcium carbonate is all improved after modification.

Claims (2)

1. the modified calcium carbonate of a good springiness, it is characterized in that, made by the raw material of following weight part: calcium carbonate 85-90, polyvinyl chloride 5.5-7, transparent ABS 5-7, synthetic rubber 4-6, carbide slag 2-3, coarse aggregate 1.5-2.5, tetrafluoroethylene 3-5, cationic starch 2-3, sulfonated lignin 2-3, modifying titanium dioxide 2.5-3.5;

Described modifying titanium dioxide is made up of the raw material of following weight part: nano titanium oxide 50-60, mica powder 2-4, pulverizing zeolite molecular sieve 4-6, ferrocene 5-7, mineral fibre 3-4, trisodium phosphate 2-3, pure-acrylic emulsion 3-4, epoxyoleic acid butyl ester 3-5, phosphoric acid ester 2-4, water 50-60; First preparation method adds pure-acrylic emulsion, nano titanium oxide, mica powder, pulverizing zeolite molecular sieve, mineral fibre, water to stir, form suspension, then add immediately ferrocene, epoxyoleic acid butyl ester, be heated to 120-140 DEG C, mix and blend 25-35 minute, is cooled to room temperature, then add all the other remaining components, under 1200-1500 rev/min of condition, stir, at 60-70 DEG C, dry, be ground into ultrafine powder and get final product.

2. a kind of modified calcium carbonate of good springiness according to claim 1, is characterized in that, is made up of following concrete steps:

(1) calcium carbonate, carbide slag, coarse aggregate, cationic starch, sulfonated lignin are mixed and added in shredder, grind 15-20 minute with the speed of 1500-2000 rev/min, take out and dry, pulverize porphyrize, cross 100-200 mesh sieve, obtain mixed powder stand-by;

(2) polyvinyl chloride, transparent ABS powder are put into mixing tank, be warming up between 80-90 DEG C, mix and blend half an hour, continue to add synthetic rubber, tetrafluoroethylene, continue to be warming up to 130-160 DEG C, mix and pour out after 15-20 minute, obtain material modified;

(3) mixed powder is mixed with material modified, add suitable quantity of water, stir and grind 2-3 hour, form suspension stand-by;

(4) suspension is mixed with modifying titanium dioxide, stir 10-15 minute under 800-1000 rev/min, dry, be ground into 200-400 order powder and get final product.