CN112375239A - Preparation method and application of highlight master batch for barium sulfate-based ABS (acrylonitrile-butadiene-styrene) - Google Patents
Preparation method and application of highlight master batch for barium sulfate-based ABS (acrylonitrile-butadiene-styrene) Download PDFInfo
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Abstract
The invention discloses a preparation method of a highlight master batch for barium sulfate-based ABS, which is characterized in that barium carbonate, sulfuric acid and a surface treating agent are used as raw materials to prepare barium sulfate powder, then the barium sulfate powder is mixed with a dispersing agent, a lubricating agent and a carrier resin A, bracing, granulating and cooling are carried out to obtain high-concentration barium sulfate master batch, and finally the high-concentration barium sulfate master batch, a compatilizer, a flexibilizer, an antioxidant and a carrier resin B are mixed, extruded, granulated and cooled to obtain the barium sulfate-based ABS highlight master batch. The barium sulfate-based high-gloss master batch for ABS provided by the invention has the advantages that the barium sulfate is uniformly dispersed, when the filling amount of the master batch is 5-20%, the glossiness and the impact strength of ABS engineering plastics are not weakened, the preparation method is simple, and the popularization and the application are easy.
Description
Technical Field
The invention relates to the technical field of plastic master batches, in particular to a preparation method and application of a barium sulfate-based highlight master batch for ABS.
Background
The ABS resin is a terpolymer of acrylonitrile, butadiene and styrene, is one of five synthetic resins, and can be produced by a blending method, a copolymerization method and an emulsion grafting method. The plastic product prepared from the ABS material is nontoxic and tasteless, has excellent impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical performance, is widely applied to the industrial fields of machinery, automobiles, electronic and electric appliances, instruments and meters, textiles, buildings and the like, and is thermoplastic engineering plastic with wide application.
With the increasing use amount of ABS, the product form is gradually increasedTwo directions develop: the method is developed towards a high-performance and multifunctional special material, so that the product has the properties of low temperature resistance, heat resistance, flame retardance, high gloss, weather resistance, electric conduction, extinction, static resistance, high fluidity and the like, and can be realized by means of alloying and the like; secondly, the method is developed towards low cost and can be realized through filling modification. Barium sulfate, as an inorganic filler, has low cohesiveness, low light dispersibility, fine particles, and the like, and also has high filling properties. However, with high light BaSO4The technique for filling modified ABS is not mature, BaSO is added4Directly filled into ABS resin, BaSO due to poor compatibility between inorganic particles and ABS resin4The powder can not be uniformly dispersed in the resin, which causes the reduction of the glossiness and impact resistance of the ABS resin and influences the processing performance of the material.
Disclosure of Invention
Aiming at the problems that the prior barium sulfate filler is poor in dispersibility when used for an ABS material, so that the glossiness and impact resistance of ABS resin are reduced, and the processing performance of the material is influenced, the invention provides a preparation method of a barium sulfate-based highlight master batch for ABS, so that the addition amount of the master batch in an ABS engineering plastic product is 5-20%, and the glossiness and impact resistance of the ABS engineering plastic product are not weakened.
In order to solve the problems, the invention adopts the following technical scheme:
a preparation method of a barium sulfate-based ABS highlight master batch comprises the following specific steps:
(1) synthesizing barium sulfate powder: adding 200 parts by weight of barium carbonate suspension with the mass concentration of 40-60% and 50 parts by weight of sulfuric acid with the mass concentration of 98% into a reaction kettle, controlling the temperature at 20-70 ℃, stirring for 20-30min, adding 0.5-5 parts by weight of surface treating agent into the reaction kettle, continuously stirring for 30-60min to prepare barium slurry, carrying out filter pressing on the barium slurry, and drying at 200-350 ℃ to obtain barium sulfate powder;
(2) preparing high-concentration barium sulfate master batch: stirring 70-90 parts by weight of the barium sulfate powder prepared in the step (1), 0.5-5 parts by weight of a dispersing agent, 0.5-3 parts by weight of a lubricating agent and 10-20 parts by weight of a carrier resin A in a high-speed mixer for 30-120min at a stirring speed of 1400 rpm, then stirring at a low speed of 30-60min at a stirring speed of 50-100 rpm to obtain a mixed material A, transferring the mixed material A into a double-screw extruder, controlling the temperature at 130 ℃ and the rotating speed of the screw at 300 ℃ and 500 rpm, carrying out bracing and grain cutting, transferring into a single-screw extruder, carrying out bracing and grain cutting, controlling the temperature at 120 ℃ and the rotating speed of the screw at 10-30 rpm, and cooling to obtain high-concentration barium sulfate master batches;
(3) preparing ABS highlight filling master batch: 70-90 parts by weight of the high-concentration barium sulfate master batch prepared in the step (2), 3-10 parts by weight of compatilizer, 3-5 parts by weight of flexibilizer, 0-2 parts by weight of antioxidant and 3-20 parts by weight of carrier resin B are mixed in a low-speed mixer for 3-10min at a stirring speed of 50-100 r/min to obtain a mixed material B, the mixed material B is transferred into a double-screw extruder, the temperature is controlled at 150-220 ℃, the screw rotating speed is 300-450 r/min, and the mixture B is subjected to melt blending, extrusion granulation and cooling to obtain the barium sulfate-based ABS highlight master batch.
Preferably, the surface treatment agent in the step (1) is one or more of stearic acid, palmitic acid, coconut oil and a silane coupling agent.
Preferably, the fineness of the barium sulfate powder prepared in the step (1) is 6000-.
Preferably, the dispersant in the step (2) is one or more of phosphate, aluminate, pentaerythritol ester and amide.
Preferably, the lubricant in step (2) is one or more of stearic acid, calcium stearate, magnesium stearate, zinc stearate, barium stearate, polyethylene wax, oxidized polyethylene wax and solid paraffin.
Preferably, the carrier resin a in step (2) is one or more of polyethylene, polypropylene, ethylene-vinyl acetate, ethylene-propylene high polymer, ethylene-butylene high polymer and ethylene-octene high polymer.
Preferably, the content of the barium sulfate powder in the high-concentration barium sulfate master batch prepared in the step (2) is 70-90%.
Preferably, the compatilizer in the step (3) is one or more of EVA-g-MAH, ABS-g-MAH, PE-g-MAH, POE-g-MAH and acrylate graft.
Preferably, in the step (3), one or more of a toughening agent styrene-butadiene block copolymer, styrene-acrylonitrile-butadiene rubber, styrene-butadiene copolymer and POE are used.
Preferably, the antioxidant in the step (3) is one or more of antioxidant-1010, antioxidant-168, antioxidant-264, antioxidant-BHT, antioxidant-450 and compound antioxidant.
Preferably, the carrier resin B in step (3) is one or more of acrylonitrile-butadiene-styrene resin, acrylonitrile-styrene copolymer, polypropylene, ethylene-vinyl acetate copolymer, methacrylic acid-butadiene-styrene copolymer and polyethylene.
The invention also relates to application of the barium sulfate-based ABS highlight master batch in ABS engineering plastic products, wherein the mass fraction of the barium sulfate-based ABS highlight master batch in the ABS engineering plastic products is 5-20%.
The invention has the beneficial effects that: the invention uses a three-step method to prepare barium sulfate-based ABS highlight master batch, firstly barium carbonate, sulfuric acid and a surface treating agent are used as raw materials to prepare barium sulfate powder, then the barium sulfate powder is mixed with a dispersing agent, a lubricating agent and a carrier resin A, bracing, granulating and cooling are carried out to obtain high-concentration barium sulfate master batch, then the high-concentration barium sulfate master batch, a compatilizer, a flexibilizer, an antioxidant and a carrier resin B are mixed, and extrusion granulation and cooling are carried out to obtain the barium sulfate-based ABS highlight master batch. The barium sulfate-based high-gloss master batch for ABS provided by the invention has the advantages that the barium sulfate is uniformly dispersed, when the filling amount of the master batch is 5-20%, the glossiness and the impact strength of ABS engineering plastics are not weakened, the preparation method is simple, and the popularization and the application are easy.
Detailed Description
For a further understanding of the invention, reference will now be made to the following examples describing preferred embodiments of the invention, but it is to be understood that the description is intended to illustrate further features and advantages of the invention and is not intended to limit the scope of the claims.
The reagents or instruments used in the present invention are not indicated by manufacturers, and are all conventional products commercially available.
Example 1:
(1) synthesizing barium sulfate powder: adding 200 parts by weight of barium carbonate suspension with the mass concentration of 40% and 50 parts by weight of sulfuric acid with the mass concentration of 98% into a reaction kettle, controlling the temperature at 20 ℃, stirring for 20min, adding 0.5 part by weight of stearic acid into the reaction kettle, continuously stirring for 30min to prepare barium slurry, press-filtering the barium slurry, and drying at 200 ℃ to obtain barium sulfate powder;
(2) preparing high-concentration barium sulfate master batch: stirring 70 parts by weight of the barium sulfate powder prepared in the step (1), 0.5 part by weight of phosphate, 0.5 part by weight of stearic acid and 10 parts by weight of polyethylene in a high-speed mixer for 30min at a stirring speed of 1400 rpm, then stirring at a low speed of 30min at a stirring speed of 50 rpm to obtain a mixed material A, transferring the mixed material A into a double-screw extruder, controlling the temperature at 130 ℃ and the screw rotation speed at 300 rpm, carrying out bracing and grain cutting, transferring into a single-screw extruder, carrying out bracing and grain cutting at a temperature of 120 ℃ and a screw rotation speed of 10 rpm, and cooling to obtain high-concentration barium sulfate master batches;
(3) preparing ABS highlight filling master batch: and (3) mixing 70 parts by weight of the high-concentration barium sulfate master batch prepared in the step (2), 3 parts by weight of EVA-g-MAH, 3 parts by weight of styrene-butadiene block copolymer and 3 parts by weight of acrylonitrile-butadiene-styrene resin in a low-speed mixer for 3min at a stirring speed of 50-100 r/min to obtain a mixed material B, transferring the mixed material B into a double-screw extruder, controlling the temperature at 150 ℃ and the rotating speed of a screw at 300 r/min, carrying out melt blending, extruding and granulating, and naturally cooling to obtain the barium sulfate-based ABS highlight master batch.
Example 2:
(1) synthesizing barium sulfate powder: adding 200 parts by weight of 45% barium carbonate suspension and 50 parts by weight of 98% sulfuric acid into a reaction kettle, controlling the temperature at 25 ℃, stirring for 25min, adding 1 part by weight of coconut oil into the reaction kettle, continuously stirring for 40min to prepare barium slurry, press-filtering the barium slurry, and drying at 250 ℃ to obtain barium sulfate powder;
(2) preparing high-concentration barium sulfate master batch: stirring 75 parts by weight of the barium sulfate powder prepared in the step (1), 1 part by weight of aluminate, 1 part by weight of calcium stearate and 15 parts by weight of polyethylene in a high-speed mixer for 50min at a stirring speed of 1400 rpm, then stirring at a low speed for 40min at a stirring speed of 60 rpm to obtain a mixed material A, transferring the mixed material A into a double-screw extruder, controlling the temperature at 140 ℃ and the screw rotation speed at 350 rpm, carrying out bracing and grain cutting, transferring into a single-screw extruder, carrying out bracing and grain cutting, controlling the temperature at 130 ℃ and the screw rotation speed at 20 rpm, and cooling to obtain the high-concentration barium sulfate master batch.
(3) Preparing ABS highlight filling master batch: mixing 80 parts by weight of the high-concentration barium sulfate master batch prepared in the step (2), 5 parts by weight of EVA-g-MAH, 3.5 parts by weight of styrene-acrylonitrile-butadiene rubber, 0.5 part by weight of antioxidant-168 and 5 parts by weight of acrylonitrile-styrene copolymer in a low-speed mixer for 5min at a stirring speed of 60 revolutions/min to obtain a mixed material B, transferring the mixed material B into a double-screw extruder, controlling the temperature at 160 ℃ and the screw rotation speed at 350 revolutions/min, carrying out melt blending, extruding granulation and cooling to obtain the barium sulfate-based ABS highlight master batch.
Example 3:
(1) synthesizing barium sulfate powder: adding 200 parts by weight of barium carbonate suspension with the mass concentration of 50% and 50 parts by weight of sulfuric acid with the mass concentration of 98% into a reaction kettle, controlling the temperature at 30 ℃, stirring for 30min, adding 2 parts by weight of stearic acid into the reaction kettle, continuously stirring for 50min to prepare barium slurry, press-filtering the barium slurry, and drying at 300 ℃ to obtain barium sulfate powder;
(2) preparing high-concentration barium sulfate master batch: stirring 80 parts by weight of the barium sulfate powder prepared in the step (1), 2 parts by weight of phosphate, 1.5 parts by weight of magnesium stearate and 20 parts by weight of polyethylene in a high-speed mixer for 60min at a stirring speed of 1400 rpm, then stirring at a low speed of 50min at a stirring speed of 70 rpm to obtain a mixed material A, transferring the mixed material A into a double-screw extruder, controlling the temperature at 150 ℃ and the screw rotation speed at 400 rpm, carrying out bracing and grain cutting, transferring into a single-screw extruder, carrying out bracing and grain cutting, controlling the temperature at 140 ℃ and the screw rotation speed at 30 rpm, and cooling to obtain high-concentration barium sulfate master batches;
(3) preparing ABS highlight filling master batch: mixing 90 parts by weight of the high-concentration barium sulfate master batch prepared in the step (2), 6 parts by weight of ABS-g-MAH, 4 parts by weight of styrene-butadiene copolymer, 1 part by weight of antioxidant-264 and 10 parts by weight of polypropylene ethylene in a low-speed mixer for 7min, stirring at the speed of 70 r/min to obtain a mixed material B, transferring the mixed material B into a double-screw extruder, controlling the temperature at 170 ℃ and the rotating speed of a screw at 400 r/min, carrying out melt blending, extruding and granulating, and cooling to obtain the barium sulfate-based ABS highlight master batch.
Example 4:
(1) synthesizing barium sulfate powder: adding 200 parts by weight of barium carbonate suspension with the mass concentration of 40-60% and 50 parts by weight of sulfuric acid with the mass concentration of 98% into a reaction kettle, controlling the temperature at 50 ℃, stirring for 25min, adding 3 parts by weight of palmitic acid into the reaction kettle, continuously stirring for 60min to prepare barium slurry, carrying out filter pressing on the barium slurry, and drying at 350 ℃ to obtain barium sulfate powder;
(2) preparing high-concentration barium sulfate master batch: stirring 90 parts by weight of the barium sulfate powder prepared in the step (1), 3 parts by weight of pentaerythritol ester, 2 parts by weight of zinc stearate and 10 parts by weight of ethylene-vinyl acetate in a high-speed mixer for 80min at a stirring speed of 1400 rpm, then stirring at a low speed of 60min at a stirring speed of 80 rpm to obtain a mixed material A, transferring the mixed material A into a double-screw extruder, controlling the temperature at 160 ℃ and the screw rotation speed at 450 rpm, carrying out bracing and grain cutting, transferring into a single-screw extruder, carrying out bracing and grain cutting at the temperature of 150 ℃ and the screw rotation speed of 10 rpm, and cooling to obtain high-concentration barium sulfate master batches;
(3) preparing ABS highlight filling master batch: mixing 70 parts by weight of the high-concentration barium sulfate master batch prepared in the step (2), 7 parts by weight of PE-g-MAH, 4.5 parts by weight of POE, 1.5 parts by weight of antioxidant-BHT and 15 parts by weight of ethylene-vinyl acetate copolymer in a low-speed mixer for 8min at a stirring speed of 80 rpm to obtain a mixed material B, transferring the mixed material B into a double-screw extruder, controlling the temperature at 180 ℃ and the rotating speed of a screw at 450 rpm, carrying out melt blending, extruding and granulating, and cooling to obtain the barium sulfate-based ABS highlight master batch.
Example 5:
(1) synthesizing barium sulfate powder: adding 200 parts by weight of 60% barium carbonate suspension and 50 parts by weight of 98% sulfuric acid into a reaction kettle, controlling the temperature at 70 ℃, stirring for 30min, adding 5 parts by weight of coconut oil into the reaction kettle, continuously stirring for 30min to prepare barium slurry, press-filtering the barium slurry, and drying at 250 ℃ to obtain barium sulfate powder;
(2) preparing high-concentration barium sulfate master batch: stirring 70 parts by weight of the barium sulfate powder prepared in the step (1), 5 parts by weight of amide, 3 parts by weight of barium stearate and 20 parts by weight of ethylene-propylene high polymer in a high-speed mixer for 120min at a stirring speed of 1400 rpm, then stirring at a low speed of 30min at a stirring speed of 90 rpm to obtain a mixed material A, transferring the mixed material A into a double-screw extruder, controlling the temperature at 180 ℃ and the screw rotation speed at 500 rpm, carrying out bracing and grain cutting, transferring into a single-screw extruder, carrying out bracing and grain cutting, controlling the temperature at 120 ℃ and the screw rotation speed at 20 rpm, and cooling to obtain high-concentration barium sulfate master batches;
(3) preparing ABS highlight filling master batch: mixing 90 parts by weight of the high-concentration barium sulfate master batch prepared in the step (2), 10 parts by weight of POE-g-MAH, 5 parts by weight of styrene-butadiene block copolymer, 2 parts by weight of antioxidant-450 and 20 parts by weight of acrylonitrile-butadiene-styrene resin in a low-speed mixer for 10min at a stirring speed of 90 r/min to obtain a mixed material B, transferring the mixed material B into a double-screw extruder, controlling the temperature at 200 ℃ and the rotating speed of a screw at 300 r/min, carrying out melt blending, extruding and granulating, and cooling to obtain the barium sulfate-based ABS highlight master batch.
Example 6:
(1) synthesizing barium sulfate powder: adding 200 parts by weight of barium carbonate suspension with the mass concentration of 50% and 50 parts by weight of sulfuric acid with the mass concentration of 98% into a reaction kettle, controlling the temperature at 70 ℃, stirring for 30min, adding 1 part by weight of silane coupling agent into the reaction kettle, continuously stirring for 40min to prepare barium slurry, carrying out filter pressing on the barium slurry, and drying at 200 ℃ to obtain barium sulfate powder;
(2) preparing high-concentration barium sulfate master batch: stirring 90 parts by weight of the barium sulfate powder prepared in the step (1), 0.5 part by weight of phosphate ester, 1 part by weight of polyethylene wax and 10 parts by weight of ethylene-butylene high polymer in a high-speed mixer for 70min at a stirring speed of 1400 rpm, then stirring at a low speed of 40min at a stirring speed of 100 rpm to obtain a mixed material A, transferring the mixed material A into a double-screw extruder, controlling the temperature at 170 ℃ and the screw rotation speed at 400 rpm, carrying out bracing and grain cutting, transferring into a single-screw extruder, carrying out bracing and grain cutting at a temperature of 120 ℃ and a screw rotation speed of 30 rpm, and cooling to obtain high-concentration barium sulfate master batches;
(3) preparing ABS highlight filling master batch: mixing 85 parts by weight of the high-concentration barium sulfate master batch prepared in the step (2), 5 parts by weight of ABS-g-MAH, 3.5 parts by weight of styrene-acrylonitrile-butadiene rubber, 1 part by weight of composite antioxidant and 10 parts by weight of polypropylene ethylene in a low-speed mixer for 7min at a stirring speed of 100 revolutions per minute to obtain a mixed material B, transferring the mixed material B into a double-screw extruder, controlling the temperature at 220 ℃ and the screw rotation speed at 350 revolutions per minute, carrying out melt blending, extruding and granulating, and cooling to obtain the barium sulfate-based ABS highlight master batch.
Example 7:
(1) synthesizing barium sulfate powder: adding 200 parts by weight of barium carbonate suspension with the mass concentration of 40% and 50 parts by weight of sulfuric acid with the mass concentration of 98% into a reaction kettle, controlling the temperature at 20 ℃, stirring for 30min, adding 5 parts by weight of palmitic acid into the reaction kettle, continuously stirring for 30min to prepare barium slurry, press-filtering the barium slurry, and drying at 250 ℃ to obtain barium sulfate powder;
(2) preparing high-concentration barium sulfate master batch: stirring 75 parts by weight of the barium sulfate powder prepared in the step (1), 1 part by weight of phosphate, 1 part by weight of oxidized polyethylene wax and 15 parts by weight of ethylene-octene high polymer in a high-speed mixer for 100min at a stirring speed of 1400 rpm, then stirring at a low speed of 50min at a stirring speed of 70 rpm to obtain a mixed material A, transferring the mixed material A into a double-screw extruder, controlling the temperature at 150 ℃ and the screw rotation speed at 500 rpm, carrying out bracing and grain cutting, transferring into a single-screw extruder, carrying out bracing and grain cutting at a temperature of 130 ℃ and a screw rotation speed of 20 rpm, and cooling to obtain high-concentration barium sulfate master batches;
(3) preparing ABS highlight filling master batch: mixing 80 parts by weight of the high-concentration barium sulfate master batch prepared in the step (2), 8 parts by weight of PE-g-MAH, 4 parts by weight of butylbenzene copolymer, 1 part by weight of antioxidant-264 and 15 parts by weight of 5 parts by weight of methacrylic acid-butadiene-styrene copolymer in a low-speed mixer for 8min at a stirring speed of 70 r/min to obtain a mixed material B, transferring the mixed material B into a double-screw extruder, controlling the temperature at 180 ℃ and the screw rotation speed at 400 r/min, carrying out melt blending, extruding and granulating, and cooling to obtain the barium sulfate-based ABS highlight master batch.
Example 8:
(1) synthesizing barium sulfate powder: adding 200 parts by weight of 60% barium carbonate suspension and 50 parts by weight of 98% sulfuric acid into a reaction kettle, controlling the temperature at 40 ℃, stirring for 30min, adding 3 parts by weight of coconut oil into the reaction kettle, continuously stirring for 30min to prepare barium slurry, press-filtering the barium slurry, and drying at 280 ℃ to obtain barium sulfate powder;
(2) preparing high-concentration barium sulfate master batch: stirring 85 parts by weight of the barium sulfate powder prepared in the step (1), 2 parts by weight of pentaerythritol ester, 2 parts by weight of solid paraffin and 15 parts by weight of ethylene-vinyl acetate in a high-speed mixer for 75min at a stirring speed of 1400 rpm, then stirring at a low speed of 40min at a stirring speed of 60 rpm to obtain a mixed material A, transferring the mixed material A into a double-screw extruder, controlling the temperature at 130 ℃ and the screw rotation speed at 400 rpm, carrying out bracing and grain cutting, transferring into a single-screw extruder, carrying out bracing and grain cutting at the temperature of 150 ℃ and the screw rotation speed of 30 rpm, and cooling to obtain high-concentration barium sulfate master batches;
(3) preparing ABS highlight filling master batch: mixing 75 parts by weight of the high-concentration barium sulfate master batch prepared in the step (2), 7 parts by weight of acrylate graft, 3 parts by weight of POE, 1.5 parts by weight of antioxidant-BHT and 20 parts by weight of acrylonitrile-butadiene-styrene resin in a low-speed mixer for 10min at a stirring speed of 60 revolutions per minute to obtain a mixed material B, transferring the mixed material B into a double-screw extruder, controlling the temperature at 200 ℃ and the rotating speed of a screw at 450 revolutions per minute, carrying out melt blending, extruding and granulating, and cooling to obtain the barium sulfate-based ABS highlight master batch.
The performance detection method comprises the following steps:
the particle size of the prepared highlight master batch for barium sulfate-based ABS is measured by a Malvern particle size tester (Nano-s 90);
the whiteness is measured by a whiteness meter (Kenicamidean CM2300D), and the higher the value is, the higher the whiteness is;
the dispersibility is tested by a master batch pressure tester, the master batch passes through a 400-mesh sieve, and the pressure does not rise in the testing process.
Table 1: comparison of Properties of highlight masterbatch for barium sulfate-based ABS prepared in examples 1-8
| Average particle diameter | Whiteness measurement | Dispersibility | |
| Example 1 | 130nm | 98.6 | The pressure does not rise |
| Example 2 | 121nm | 98.2 | The pressure does not rise |
| Example 3 | 120nm | 98.0 | The pressure does not rise |
| Example 4 | 136nm | 99.0 | The pressure does not rise |
| Example 5 | 119nm | 98.3 | The pressure does not rise |
| Example 6 | 115nm | 98.5 | The pressure does not rise |
| Example 7 | 123nm | 98.3 | The pressure does not rise |
| Example 8 | 112nm | 98.6 | The pressure does not rise |
The performance detection method comprises the following steps:
the master batches prepared in the embodiments 1 to 8 are applied to the production of ABS engineering plastic products, and the performance of the ABS engineering plastic products under different master batch addition amounts is tested by taking the embodiment 4 as an example, and the test results are shown in Table 2.
Table 2: example 4 the master batch prepared in different addition amounts has influence on the performance of ABS engineering plastic products
| Addition amount of the master batch | Gloss/% | Impact of notched kj/m2 | Tensile strength/MPa | Flexural Strength/MPa |
| Test standard | GB/T8807（60°） | GB/T1843-1996（5.5J） | IS0527（2000N，50mm/min） | IS0178（500N，20mm/min） |
| 0% | 76.0 | 22.0 | 42.3 | 65.13 |
| 5% | 75.9 | 21.4P | 39.5 | 61.44 |
| 10% | 76.0 | 22.3P | 38.3 | 58.56 |
| 15% | 75.8 | 23.1P | 39.2 | 60.55 |
| 20% | 76.1 | 20P | 39.0 | 61.23 |
| 25% | 70.2 | 18P | 35.21 | 50.23 |
The data show that the high-gloss master batch for the barium sulfate-based ABS has good dispersity and small particle size, the addition amount of the master batch is 5-20 percent when the master batch is applied to preparing the master batch of the ABS engineering plastic product, and the glossiness and the impact strength of the ABS engineering plastic product are not weakened.
Those skilled in the art to which the present invention pertains can also make appropriate alterations and modifications to the above-described embodiments, in light of the above disclosure. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. A preparation method of barium sulfate-based ABS highlight master batch is characterized by comprising the following steps: the preparation method comprises the following steps:
(1) synthesizing barium sulfate powder: adding 200 parts by weight of barium carbonate suspension with the mass concentration of 40-60% and 50 parts by weight of sulfuric acid with the mass concentration of 98% into a reaction kettle, controlling the temperature at 20-70 ℃, stirring for 20-30min, adding 0.5-5 parts by weight of surface treating agent into the reaction kettle, continuously stirring for 30-60min to prepare barium slurry, carrying out filter pressing on the barium slurry, and drying at 200-350 ℃ to obtain barium sulfate powder;
(2) preparing high-concentration barium sulfate master batch: stirring 70-90 parts by weight of the barium sulfate powder prepared in the step (1), 0.5-5 parts by weight of a dispersing agent, 0.5-3 parts by weight of a lubricating agent and 10-20 parts by weight of a carrier resin A in a high-speed mixer for 30-120min at a stirring speed of 1400 rpm, then stirring at a low speed of 30-60min at a stirring speed of 50-100 rpm to obtain a mixed material A, transferring the mixed material A into a double-screw extruder, controlling the temperature at 130 ℃ and the rotating speed of the screw at 300 ℃ and 500 rpm, carrying out bracing and grain cutting, transferring into a single-screw extruder, carrying out bracing and grain cutting, controlling the temperature at 120 ℃ and the rotating speed of the screw at 10-30 rpm, and cooling to obtain high-concentration barium sulfate master batches;
(3) preparing ABS highlight filling master batch: 70-90 parts by weight of the high-concentration barium sulfate master batch prepared in the step (2), 3-10 parts by weight of compatilizer, 3-5 parts by weight of flexibilizer, 0-2 parts by weight of antioxidant and 3-20 parts by weight of carrier resin B are mixed in a low-speed mixer for 3-10min at a stirring speed of 50-100 r/min to obtain a mixed material B, the mixed material B is transferred into a double-screw extruder, the temperature is controlled at 150-220 ℃, the screw rotating speed is 300-450 r/min, and the mixture B is subjected to melt blending, extrusion granulation and cooling to obtain the barium sulfate-based ABS highlight master batch.
2. The method for preparing the barium sulfate-based ABS highlight master batch according to claim 1, characterized in that: the surface treating agent in the step (1) is one or more of stearic acid, palmitic acid, coconut oil and a silane coupling agent, and the fineness of the barium sulfate powder prepared in the step (1) is 6000-20000 meshes.
3. The method for preparing the barium sulfate-based ABS highlight master batch according to claim 1, characterized in that: the dispersant in the step (2) is one or more of phosphate, aluminate, pentaerythritol ester and amide, the lubricant in the step (2) is one or more of stearic acid, calcium stearate, magnesium stearate, zinc stearate, barium stearate, polyethylene wax, oxidized polyethylene wax and solid paraffin, and the carrier resin A in the step (2) is one or more of polyethylene, polypropylene, ethylene-vinyl acetate, ethylene-propylene high polymer, ethylene-butylene high polymer and ethylene-octene high polymer.
4. The method for preparing the barium sulfate-based ABS highlight master batch according to claim 1, characterized in that: the content of the barium sulfate powder in the high-concentration barium sulfate master batch prepared in the step (2) is 70-90%.
5. The method for preparing the barium sulfate-based ABS highlight master batch according to claim 1, characterized in that: in the step (3), the compatilizer is one or more of EVA-g-MAH, ABS-g-MAH, PE-g-MAH, POE-g-MAH and acrylate graft.
6. The method for preparing the barium sulfate-based ABS highlight master batch according to claim 1, characterized in that: and (3) one or more of a toughening agent styrene-butadiene block copolymer, styrene-acrylonitrile-butadiene rubber, a styrene-butadiene copolymer and POE.
7. The method for preparing the barium sulfate-based ABS highlight master batch according to claim 1, characterized in that: in the step (3), the antioxidant is one or more of antioxidant-1010, antioxidant-168, antioxidant-264, antioxidant-BHT, antioxidant-450 and composite antioxidant.
8. The method for preparing the barium sulfate-based ABS highlight master batch according to claim 1, characterized in that: the carrier resin B in the step (3) is one or more of acrylonitrile-butadiene-styrene resin, acrylonitrile-styrene copolymer, polypropylene ethylene, ethylene-vinyl acetate copolymer, methacrylic acid-butadiene-styrene copolymer and polyethylene.
9. A barium sulfate-based ABS highlight master batch applied to ABS engineering plastic products is characterized by being prepared by the preparation method of the barium sulfate-based ABS highlight master batch according to any one of claims 1 to 8.
10. The barium sulfate-based ABS highlight master batch applied to the ABS engineering plastic product according to claim 9, wherein the mass fraction of the barium sulfate-based ABS highlight master batch in the ABS engineering plastic product is 5% -20%.
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| CN116640386A (en) * | 2023-06-19 | 2023-08-25 | 合肥市丽红塑胶材料有限公司 | Barium sulfate master batch for plastic and preparation method thereof |
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