CN104177656A - Light-resistant light calcium carbonate filler and preparation method thereof - Google Patents

Abstract

The invention discloses a light-resistant light calcium carbonate filler, which is prepared from the following raw materials in parts by weight: 3-4 parts of polyvinyl alcohol superfine powder, 0.3-0.5 part of calcium nitrate tetrahydrate, 3-5 parts of nanometer titania, 2-2.5 parts of trimellitic acid decyl octyl ester, 1-1.3 parts of boron oxide, 1.3-1.6 parts of dibutyl succinate, 1-2 parts of triphenyl phosphate, 1-2 parts of arabic gum, 0.1-0.2 part of fatty alcohol-polyoxyethylene ether, 0.1-0.2 part of sorbitan oleate, 85-89 parts of light calcium carbonate, 13-16 parts of an assistant and 120-140 parts of water. The nanometer titania and the triphenyl phosphate are added to the filler disclosed by the invention, so that the ageing resistance and the strength of the PVC can be increased, the flame retardant property of the PVC can be increased by adding the boron oxide, and the calcium carbonate has good dispersibility, good compatibility with PVC and good reinforcing performance by adding the dibutyl succinate, the arabic gum and the surfactant and combining an excellent modification technology.

Description

A kind of fast light light calcium carbonate filler and preparation method thereof

Technical field

The invention belongs to field of plastics processing, particularly a kind of fast light light calcium carbonate filler and preparation method thereof.

Background technology

Calcium carbonate is a kind of mineral filler being widely used, may be used in plastics, rubber item, coating, sizing agent etc., particularly light calcium carbonate, stability to PVC plastics size has great role, the hardness of goods can be improved, surface luster and the profile pattern of goods can also be improved.In general PVC plastics, adding calcium carbonate thermotolerance can improve, and because calcium carbonate whiteness is more than 90%, can also replaces expensive white pigment and play certain whitening effect.But the wetting ability of calcium carbonate is strong, if do not carry out surface modification, poor with the consistency of polymeric matrix in the course of processing of polymer product, be very easy to reunite, even form textural defect because reunite, so calcium carbonate particles, must be to its modifying surface before being applied in polymer materials, complete by wetting ability to oil loving suitable transformation.

At present, the surface modification of calcium carbonate is mainly contained to two approach both at home and abroad, 1. make fine particles or ultra micro refinement; 2. improve the surface property of calcium carbonate, it is changed to Organic by inorganic nature, improve the consistency with organic polymer.But the calcium carbonate of miniaturization easily reunites, and cannot change the performance of its surface hydrophilic oleophobic.The surface modification of calcium carbonate comprises local reaction modification and surface coating modification, the modes such as high energy surface modification and mechanochemical modification, but PVC plastics industry is rapid at present, people constantly increase the demand of matrix material, calcium carbonate surface modifying has become one of deep process technology, thereby further improve a series of performances such as the oil absorbency, dispersiveness, dimensional stability, thermotolerance, wear resistance, water tolerance, flame retardant resistance, mildew resistance of calcium carbonate, to meet the PVC plastics industry of continuous progress.

Summary of the invention

The object of the present invention is to provide a kind of fast light light calcium carbonate filler and preparation method thereof, this filler can increase light aging resisting property and the intensity of PVC, can increase the flame retardant properties of PVC, and fillers dispersed is good, good with PVC consistency, and reinforcing property is good.

Technical scheme of the present invention is as follows:

A kind of fast light light calcium carbonate filler, is characterized in that being made up of the raw material of following weight part: polyvinyl alcohol ultrafine powder 3-4, four water-calcium nitrate 0.3-0.5, nano titanium oxide 3-5, trimellitic acid decyl octyl group ester 2-2.5, boron oxide 1-1.3, dibutyl succinate 1.3-1.6, triphenyl phosphite 1-2, Sudan Gum-arabic 1-2, fatty alcohol-polyoxyethylene ether 0.1-0.2, sorbitan mono-oleic acid ester 0.1-0.2, light calcium carbonate 85-89, auxiliary agent 13-16, water 120-140;

Described auxiliary agent is made up of the raw material of following weight part: sodium stearate 0.04-0.06, sodium carbonate 0.01-0.03, sodium bicarbonate 0.02-0.03, benzene emulsion 0.4-0.5, dioctyl maleate 2-3, polyolefin elastomer 0.1-0.2, ethylene-vinyl acetate copolymer 0.1-0.2, carclazyte 3-5, cocoanut fatty acid diethanolamide 0.01-0.02, E-12 epoxy resin 0.1-0.2, glycol ether 0.2-0.3, Ethylene glycol dimethacrylate 0.3-0.4, spherex 0.4-0.6, water 8-11, preparation method is: polyolefin elastomer, ethylene-vinyl acetate copolymer, dioctyl maleate, E-12 epoxy resin, glycol ether, Ethylene glycol dimethacrylate are mixed, stir, make recombiner, benzene emulsion, sodium stearate, sodium carbonate, sodium bicarbonate, cocoanut fatty acid diethanolamide are added to the water, be heated to 60-70 DEG C, stir, add carclazyte, spherex, stir 20-30 minute, ovendry power is broken into carclazyte powder, then adds recombiner, dispersion grinding 20-30 minute, under room temperature, leave standstill, slowly infiltrate into described carclazyte powder surface to recombiner, redispersion grinds to form the particle of 2-50 μ m, to obtain final product.

The preparation method of described fast light light calcium carbonate filler, is characterized in that comprising the following steps:

(1) fatty alcohol-polyoxyethylene ether, sorbitan mono-oleic acid ester are added to the water, after stirring, add light calcium carbonate, nano titanium oxide, boron oxide, under 3000-4000 rev/min, stir 6-8 minute, obtain mixture;

(2) Sudan Gum-arabic is joined in the material that (1) step obtains, be heated to 80-90 DEG C, under 9000-12000 rev/min, stir 30-40 minute, obtain mixture;

(3) other remaining component mixed grindings are disperseed to 15-20 minute, add in the mixture that (2) step obtains, under 1000-1500 rev/min, stir 30-40 minute, spraying is dry, is ground into the particle of 2-50 μ m, to obtain final product.

Beneficial effect of the present invention

Filler of the present invention has added nano titanium oxide, triphenyl phosphite, can increase light aging resisting property and the intensity of PVC; By adding boron oxide, can increase the flame retardant properties of PVC; By adding dibutyl succinate, Sudan Gum-arabic and tensio-active agent, in conjunction with good modified technique, make calcium carbonate dispersion property good, good with PVC consistency, reinforcing property is good; Auxiliary agent of the present invention can increase the wetting property of calcium carbonate in PVC, has reduced the defect of PVC.

Embodiment

A kind of fast light light calcium carbonate filler, by following weight part (kilogram) raw material make: polyvinyl alcohol ultrafine powder 3.5, four water-calcium nitrate 0.4, nano titanium oxide 4, trimellitic acid decyl octyl group ester 2.3, boron oxide 1.2, dibutyl succinate 1.4, triphenyl phosphite 1.5, Sudan Gum-arabic 1.5, fatty alcohol-polyoxyethylene ether 0.1, sorbitan mono-oleic acid ester 0.1, light calcium carbonate 87, auxiliary agent 15, water 130;

Described auxiliary agent by following weight part (kilogram) raw material make: sodium stearate 0.05, sodium carbonate 0.02, sodium bicarbonate 0.02, benzene emulsion 0.4, dioctyl maleate 2.5, polyolefin elastomer 0.1, ethylene-vinyl acetate copolymer 0.1, carclazyte 4, cocoanut fatty acid diethanolamide 0.01, E-12 epoxy resin 0.1, glycol ether 0.2, Ethylene glycol dimethacrylate 0.3, spherex 0.5, water 9; Preparation method is: polyolefin elastomer, ethylene-vinyl acetate copolymer, dioctyl maleate, E-12 epoxy resin, glycol ether, Ethylene glycol dimethacrylate are mixed, stir, make recombiner; Benzene emulsion, sodium stearate, sodium carbonate, sodium bicarbonate, cocoanut fatty acid diethanolamide are added to the water, be heated to 65 DEG C, stir, add carclazyte, spherex, stir 25 minutes, ovendry power is broken into carclazyte powder, then adds recombiner, dispersion grinding 25 minutes, under room temperature, leave standstill, slowly infiltrate into described carclazyte powder surface to recombiner, redispersion grinds to form the particle of 2-50 μ m, to obtain final product.

The preparation method of described fast light light calcium carbonate filler, comprises the following steps:

(1) fatty alcohol-polyoxyethylene ether, sorbitan mono-oleic acid ester are added to the water, after stirring, add light calcium carbonate, nano titanium oxide, boron oxide, under 3500 revs/min, stir 7 minutes, obtain mixture;

(2) Sudan Gum-arabic is joined in the material that (1) step obtains, be heated to 85 DEG C, under 10000 revs/min, stir 35 minutes, obtain mixture;

(3) other remaining component mixed grindings are disperseed 17 minutes, add in the mixture that (2) step obtains, stir 35 minutes under 1300 revs/min, spraying is dry, is ground into the particle of 2-50 μ m, to obtain final product.

Experimental data:

The oil-absorption(number) of the present embodiment filler is 34mL/100g, with the contact angle of water be 100 °.This filler is used for producing hard PVC test piece, and addition is 20%, and the performance test results is: yield strength 54.57Mpa, breaking tenacity is 46.976Mpa, elongation at break 104%, Young's modulus 2708.76Mpa.

This filler is used for producing flexible PVC test piece, and addition is 20%, and the performance test results is: yield strength 5.45Mpa, breaking tenacity is 6.35Mpa, elongation at break 117%, Young's modulus 68.5Mpa.

Can find out the PVC excellent material performance that this filler obtains.

Claims (2)

1. a fast light light calcium carbonate filler, is characterized in that being made up of the raw material of following weight part: polyvinyl alcohol ultrafine powder 3-4, four water-calcium nitrate 0.3-0.5, nano titanium oxide 3-5, trimellitic acid decyl octyl group ester 2-2.5, boron oxide 1-1.3, dibutyl succinate 1.3-1.6, triphenyl phosphite 1-2, Sudan Gum-arabic 1-2, fatty alcohol-polyoxyethylene ether 0.1-0.2, sorbitan mono-oleic acid ester 0.1-0.2, light calcium carbonate 85-89, auxiliary agent 13-16, water 120-140;

Described auxiliary agent is made up of the raw material of following weight part: sodium stearate 0.04-0.06, sodium carbonate 0.01-0.03, sodium bicarbonate 0.02-0.03, benzene emulsion 0.4-0.5, dioctyl maleate 2-3, polyolefin elastomer 0.1-0.2, ethylene-vinyl acetate copolymer 0.1-0.2, carclazyte 3-5, cocoanut fatty acid diethanolamide 0.01-0.02, E-12 epoxy resin 0.1-0.2, glycol ether 0.2-0.3, Ethylene glycol dimethacrylate 0.3-0.4, spherex 0.4-0.6, water 8-11, preparation method is: polyolefin elastomer, ethylene-vinyl acetate copolymer, dioctyl maleate, E-12 epoxy resin, glycol ether, Ethylene glycol dimethacrylate are mixed, stir, make recombiner, benzene emulsion, sodium stearate, sodium carbonate, sodium bicarbonate, cocoanut fatty acid diethanolamide are added to the water, be heated to 60-70 DEG C, stir, add carclazyte, spherex, stir 20-30 minute, ovendry power is broken into carclazyte powder, then adds recombiner, dispersion grinding 20-30 minute, under room temperature, leave standstill, slowly infiltrate into described carclazyte powder surface to recombiner, redispersion grinds to form the particle of 2-50 μ m, to obtain final product.

2. the preparation method of fast light light calcium carbonate filler according to claim 1, is characterized in that comprising the following steps:

(1) fatty alcohol-polyoxyethylene ether, sorbitan mono-oleic acid ester are added to the water, after stirring, add light calcium carbonate, nano titanium oxide, boron oxide, under 3000-4000 rev/min, stir 6-8 minute, obtain mixture;

(2) Sudan Gum-arabic is joined in the material that (1) step obtains, be heated to 80-90 DEG C, under 9000-12000 rev/min, stir 30-40 minute, obtain mixture;

(3) other remaining component mixed grindings are disperseed to 15-20 minute, add in the mixture that (2) step obtains, under 1000-1500 rev/min, stir 30-40 minute, spraying is dry, is ground into the particle of 2-50 μ m, to obtain final product.