CN103408801A - Modified calcium carbonate for wear-resistant rubber shoe soles and preparation method thereof - Google Patents

Abstract

The invention provides a modified calcium carbonate for wear-resistant rubber soles, which is prepared from the following raw material components in parts by weight: heavy calcium carbonate 95-100, stearyl polyoxyethylene ether 0.2-0.3, dehydration Sorbitan fatty acid ester 0.3-0.4, PE wax 0.1-0.4, triphenyl phosphite 0.5-0.8, polytetrafluoroethylene micropowder 0.5-1, antioxidant 40200.1-0.3, ABS high rubber powder 1-2, high wear resistance Carbon black 0.2-0.5, zirconium fluoride 0.1-0.2, dioctyl terephthalate DOTP1-2, polyvinyl alcohol 0.5-0.6, titanate coupling agent TMC-TTS1-2. Dry the calcium carbonate first, then add other raw materials into it in proportion and order, mix thoroughly in a high-speed mixer, dry and grind. The modified calcium carbonate obtained by the invention has good dispersibility and good wear resistance, can be used in rubber materials for shoe soles, can reduce costs, and at the same time improve various processing properties and wear resistance of shoe rubber.

Description

A kind of modified calcium carbonate for wear-resistant rubber sole and preparation method thereof

technical field

The present invention relates to the field of inorganic fillers, in particular to a modified calcium carbonate for wear-resistant rubber soles and a preparation method thereof.

Background technique

Ground calcium carbonate is a commonly used inorganic filler. It is widely used in rubber, plastics, coatings and other fields due to its wide source and low price. However, the surface of heavy calcium carbonate is hydrophilic and oleophobic, the specific surface area is large, the surface energy is high, and the particles are easily agglomerated. When directly or in large quantities filled in organic matrix materials, it is not only difficult to disperse evenly, but also has a weak binding force with the matrix. , leading to two-phase interface defects and some performance degradation of composite materials. Therefore, in order to broaden its application field, it is necessary to modify the surface of heavy calcium carbonate to make its surface lipophilic and hydrophobic, enhance the compatibility with the organic matrix, improve the dispersion in the organic matrix, and improve and enhance the composite material. performance.

Contents of the invention

The invention provides a modified calcium carbonate for wear-resistant rubber soles and a preparation method thereof.

The technical scheme adopted in the present invention is as follows:

A modified calcium carbonate for wear-resistant rubber soles, characterized in that it is prepared from the following raw material components in parts by weight: heavy calcium carbonate 95-100, stearyl polyoxyethylene ether 0.2-0.3, lost Sorbitan fatty acid ester 0.3-0.4, PE wax 0.1-0.4, triphenyl phosphite 0.5-0.8, polytetrafluoroethylene micropowder 0.5-1, antioxidant 4020 0.1-0.3, ABS high rubber powder 1-2, high Wear-resistant carbon black 0.2-0.5, zirconium fluoride 0.1-0.2, dioctyl terephthalate DOTP 1-2, polyvinyl alcohol 0.5-0.6, titanate coupling agent TMC-TTS 1-2.

The preparation method of modified calcium carbonate for the wear-resistant rubber sole is characterized in that: the specific operations are:

First, dry the heavy calcium carbonate at 90-100°C until the water content is below 0.5%, add it to a high-speed mixer, and mix stearyl polyoxyethylene ether, sorbitan fatty acid ester, and PE wax , triphenyl phosphite, and polytetrafluoroethylene micropowder are mixed in proportion, then added to calcium carbonate, stirred at high speed for 2-3 minutes, and then added in proportion to anti-aging agent 4020, ABS high rubber powder, high wear-resistant carbon black, Zirconium fluoride, dioctyl terephthalate DOTP, polyvinyl alcohol, after stirring at a high speed of 800-1000 rpm for 5-6 minutes, finally add titanate coupling agent TMC-TTS, at 1200-1300 The speed of rev/min was stirred at a high speed for 15-19 minutes, and then dried to obtain modified calcium carbonate.

Beneficial effects of the present invention:

The present invention adds a variety of surface treatment agents and functional additives on the basis of the modification of the existing heavy calcium carbonate. The obtained modified calcium carbonate has a particle size of less than 0.1um, uniform particle size, large specific surface area, and greatly improved application performance. Superior to the characteristics of ordinary calcium carbonate, by adding a small amount of anti-aging agent and polytetrafluoroethylene micropowder during modification, the modified calcium carbonate obtained has good dispersibility and compatibility in the sole rubber, which can increase the addition of fillers Quantity, reduce the cost of raw materials; greatly improve the anti-aging and wear resistance of shoe rubber, improve the fluidity and processing performance of the system at the same time, and endow the product with better physical and mechanical properties, to achieve the effect of toughening and strengthening.

Detailed ways

A preparation method of modified calcium carbonate for wear-resistant rubber soles,

Weigh heavy calcium carbonate 100, stearyl polyoxyethylene ether 0.2, sorbitan fatty acid ester 0.4, PE wax 0.2, triphenyl phosphite 0.7, polytetrafluoroethylene micropowder 0.6 by weight (kg) , Antiaging agent 4020 0.2, ABS high rubber powder 1, high wear-resistant carbon black 0.3, zirconium fluoride 0.1, dioctyl terephthalate DOTP 2, polyvinyl alcohol 0.6, titanate coupling agent TMC-TTS 2,

First, dry the heavy calcium carbonate at 95°C until the water content is less than 0.5%, add it to a high-speed mixer, and mix stearyl polyoxyethylene ether, sorbitan fatty acid ester, PE wax, Mix triphenyl phosphate and polytetrafluoroethylene micropowder in proportion, then add it to calcium carbonate, stir at high speed for 3 minutes, then add anti-aging agent 4020, ABS high rubber powder, high wear-resistant carbon black, zirconium fluoride, Dioctyl terephthalate DOTP, polyvinyl alcohol, after stirring at a high speed of 800-1000 rpm for 5 minutes, finally add the titanate coupling agent TMC-TTS, at a high speed of 1200-1300 rpm Stir for 16 minutes, then dry to obtain modified calcium carbonate. the

We add ordinary heavy calcium carbonate and the modified heavy calcium carbonate of the present invention to styrene-butadiene rubber in the same amount, and add other identical ingredients to obtain the physical properties of rubber vulcanization and shoe sole rubber respectively. The performance comparison is shown in Table 1:

Table 1

It can be seen from Table 1 that the tire rubber vulcanized with the modified calcium carbonate compound of the present invention has better overall performance, wherein the thermal aging performance is much improved than that of ordinary crown rubber, and the elasticity is obviously increased.

Claims (2)

1. a kind of wear-resistant rubber sole uses modified calcium carbonate, is characterized in that, is prepared from by the raw material component of following weight part: Heavy calcium carbonate 95-100, stearyl polyoxyethylene ether 0.2-0.3, sorbitan fatty acid ester 0.3-0.4, PE wax 0.1-0.4, triphenyl phosphite 0.5-0.8, polytetrafluoroethylene Ethylene micropowder 0.5-1, antioxidant 4020 0.1-0.3, ABS high rubber powder 1-2, high wear-resistant carbon black 0.2-0.5, zirconium fluoride 0.1-0.2, dioctyl terephthalate DOTP 1-2, poly Vinyl alcohol 0.5-0.6, titanate coupling agent TMC-TTS 1-2. 2. the preparation method of modified calcium carbonate for wear-resistant rubber sole according to claim 1, is characterized in that: concrete operation is: First, dry the heavy calcium carbonate at 90-100°C until the water content is below 0.5%, add it to a high-speed mixer, and mix stearyl polyoxyethylene ether, sorbitan fatty acid ester, and PE wax , triphenyl phosphite, and polytetrafluoroethylene micropowder are mixed in proportion, then added to calcium carbonate, stirred at high speed for 2-3 minutes, and then added in proportion to anti-aging agent 4020, ABS high rubber powder, high wear-resistant carbon black, Zirconium fluoride, dioctyl terephthalate DOTP, polyvinyl alcohol, after stirring at a high speed of 800-1000 rpm for 5-6 minutes, finally add titanate coupling agent TMC-TTS, at 1200-1300 The speed of rev/min was stirred at a high speed for 15-19 minutes, and then dried to obtain modified calcium carbonate.