CN104194088A - Heat-resistant rubber filler and preparation method thereof - Google Patents

Abstract

The invention discloses a heat-resistant rubber filler prepared from the following raw materials in parts by weight: 2-3 parts of dioctadecyl dimethyl ammonium bromide, 10-15 parts of 3-5% sodium hydroxide solution, 1-2 parts of guanidine carbonate, 1-2 parts of cyclotetrasiloxane, 1-1.5 parts of stearic acid, 1.2-1.4 parts of castor oil, 1-2 parts of dioctyl phthalate, 2-3 parts of humic acid, 2-3 parts of 2, 2'-methylene-bis(4,6-di-tert-butylphenol)phosphate, 5-8 parts of ethylene glycol, 1-2 parts of tetraethoxy titanium, 100-120 parts of attapulgite, a proper amount of water, 5-10 parts of adjuvant and 20-30 parts of 3-5% hydrochloric acid solution. According to the heat-resistant rubber filler, 2, 2'-methylene-bis(4,6-di-tert-butylphenol)phosphate and guanidine carbonate are added into the attapulgite, so that the heat resistance of the rubber can be improved; and after the attapulgite is modified, the compatibility between the attapulgite and the rubber is good, the toughness and impact strength of the rubber can be enhanced, and the production cost can be reduced.

Description

A kind of heat resistant rubber filler and preparation method thereof

Technical field

The invention belongs to attapulgite manufacture field, particularly a kind of heat resistant rubber filler and preparation method thereof.

Background technology

Attapulgite has unique dispersion, high temperature resistant, the anti-good colloidal property such as saline and alkaline and higher adsorption bleaching ability.And there is certain plasticity-and cohesive force, and water-absorbent is strong, tool viscosity and plasticity-when wet, and dry post shrinkage is little, not quite aobvious crackle, water soaking collapses loose, and suspension is met not flocculation sediment of dielectric medium.Therefore attapulgite is widely used in the numerous areas such as sewage disposal, adsorption cleaning, washing composition, rubber, coating, papermaking, light industry, agricultural, makeup, is a kind of important nonmetallic minerals.

In order further to improve the result of use of attapulgite, strengthen its overall physical and chemical performance, conventionally before use it is carried out to modification, improve the dispersing property of attapulgite, gel viscosity, colloidity, rheological property.The current attapulgite modified needs that can not meet productive life in a lot of performances, also require further improvement its performance.

Summary of the invention

The object of the present invention is to provide a kind of heat resistant rubber filler and preparation method thereof, this attapulgite can increase the resistance toheat of rubber, good with the consistency of rubber, can increase toughness and the impact strength of rubber, reduces production costs.

Technical scheme of the present invention is as follows:

A kind of heat resistant rubber filler, it is characterized in that being made by the raw material of following weight part: the two octadecyl Dimethyl Ammonium 2-3 of bromination, 3-5% sodium hydroxide solution 10-15, Guanidinium carbonate 1-2, ring four polydimethylsiloxane 1-2, stearic acid 1-1.5, Viscotrol C 1.2-1.4, dioctyl phthalate (DOP) 1-2, humic acid 2-3,2,2 '-methylene radical-bis-(4,6-DI-tert-butylphenol compounds) phosphoric acid ester 2-3, ethylene glycol 5-8, titanium ethanolate 1-2, attapulgite 100-120, water are appropriate, auxiliary agent 5-10,3-5% hydrochloric acid soln 20-30;

Described auxiliary agent is made up of the raw material of following weight part: iso-octyl palmitate 0.2-0.3, Porasil 2-3, urethane resin 0.4-0.6, ethylene glycol 3-5, vitamin-E 0.3-0.4, activated alumina 0.3-0.5, linolenic acid 0.2-0.3, sodium lignosulfonate 0.3-0.4, pearl powder 1-1.5, bamboo fibers 0.2-0.3, magnesium sulfate heptahydrate 0.1-0.2, wood charcoal powder 2-3, succsinic acid 0.2-0.3, double stearic acid aluminium 0.2-0.4, medical stone powder 3-5, silane coupling agent KH-5721-2; Preparation method is: Porasil, pearl powder, wood charcoal powder, medical stone powder, silane coupling agent KH-572 mixed grinding is even, obtain mixed powder; By other remaining component mixing and stirring, with gained powder mixed grinding 20-30 minute, reheat to 60-70 DEG C, griding reaction 30-40 minute, to obtain final product again.

The preparation method of described heat resistant rubber filler, is characterized in that comprising the following steps:

(1) attapulgite is sent into calcining furnace, at 300-400 DEG C, calcine 3-4 hour, take out and pulverize, cross 20 mesh sieves, add in the water of 340-360 weight part, under 100-200 rev/min, stir 10-12 hour, obtain attapulgite suspension, add 3-5% hydrochloric acid soln, the two octadecyl Dimethyl Ammonium of bromination, be heated to 50-60 DEG C, stir 1-2 hour, then add while stirring 3-5% sodium hydroxide solution to continue to stir 1-2 hour, filter, being washed to pH value is 6-8, refilter, dry, obtain activating attapulgite powder;

(2) other remaining components are ground evenly, add in residue water, stir, obtain slurry;

(3) blow the warm air of 60-70 DEG C to attapulgite powder it is seethed, then spray into the slurry that (2) vaporific step obtains in the powder seething, after the two is fully mixed, maintenance temperature is 60-70 DEG C, continues to seethe 30-40 minute;

(4) mixture (3) step being obtained is dried, and grinds to form the particle of 5-80 μ m, to obtain final product.

Beneficial effect of the present invention

Attapulgite of the present invention has added 2,2 '-methylene radical-bis-(4,6-DI-tert-butylphenol compounds) phosphoric acid ester, Guanidinium carbonate, can increase the resistance toheat of rubber; This attapulgite is after modification, good with the consistency of rubber, can increase toughness and the impact strength of rubber, reduces production costs.

Embodiment

A kind of heat resistant rubber filler, by following weight part (kilogram) raw material make: the two octadecyl Dimethyl Ammonium 2.5 of bromination, 4% sodium hydroxide solution 13, Guanidinium carbonate 1.5, ring four polydimethylsiloxanes 1.5, stearic acid 1.3, Viscotrol C 1.3, dioctyl phthalate (DOP) 1.5, humic acid 2.5,2,2 '-methylene radical-bis-(4,6-DI-tert-butylphenol compounds) phosphoric acid ester 2.5, ethylene glycol 7, titanium ethanolate 1.5, attapulgite 110, water are appropriate, auxiliary agent 7,4% hydrochloric acid soln 25;

Described auxiliary agent by following weight part (kilogram) raw material make: iso-octyl palmitate 0.2, Porasil 2.5, urethane resin 0.5, ethylene glycol 4, vitamin-E 0.4, activated alumina 0.4, linolenic acid 0.3, sodium lignosulfonate 0.4, pearl powder 1.3, bamboo fibers 0.2, magnesium sulfate heptahydrate 0.2, wood charcoal powder 2.5, succsinic acid 0.2, double stearic acid aluminium 0.3, medical stone powder 4, silane coupling agent KH-5721.5; Preparation method is: Porasil, pearl powder, wood charcoal powder, medical stone powder, silane coupling agent KH-572 mixed grinding is even, obtain mixed powder; Again by other remaining component mixing and stirring, with gained powder mixed grinding 25 minutes, reheat to 65 DEG C, griding reaction 35 minutes, to obtain final product.

The preparation method of described heat resistant rubber filler, comprises the following steps:

(1) attapulgite is sent into calcining furnace, at 350 DEG C, calcine 3.5 hours, take out and pulverize, cross 20 mesh sieves, add in the water of 350 weight parts, under 150 revs/min, stir 11 hours, obtain attapulgite suspension, add 4% hydrochloric acid soln, the two octadecyl Dimethyl Ammonium of bromination, be heated to 55 DEG C, stir 1.5 hours, then add while stirring 4% sodium hydroxide solution to continue to stir 1.5 hours, filter, being washed to pH value is 7.5, refilter, dry, obtain activating attapulgite powder;

(2) other remaining components are ground evenly, add in residue water, stir, obtain slurry;

(3) blow the warm air of 65 DEG C to attapulgite powder it is seethed, then spray into the slurry that (2) vaporific step obtains in the powder seething, after the two is fully mixed, keeping temperature is 65 DEG C, continues to seethe 35 minutes;

(4) mixture (3) step being obtained is dried, and grinds to form the particle of 5-80 μ m, to obtain final product.

Experimental data:

The attapulgite modified specific surface area of the present embodiment is 278 ㎡/g, is added to the water by 4%, and tested viscosity is 11655.3mPa.s.By this embodiment attapulgite, for paracril, addition is 15%, and after tested, tensile strength at yield is 29.4Pa to the rubber obtaining, and 100% fixed stretching strength is 19.5MPa.

Claims (2)

1. a heat resistant rubber filler, it is characterized in that being made by the raw material of following weight part: the two octadecyl Dimethyl Ammonium 2-3 of bromination, 3-5% sodium hydroxide solution 10-15, Guanidinium carbonate 1-2, ring four polydimethylsiloxane 1-2, stearic acid 1-1.5, Viscotrol C 1.2-1.4, dioctyl phthalate (DOP) 1-2, humic acid 2-3,2,2 '-methylene radical-bis-(4,6-DI-tert-butylphenol compounds) phosphoric acid ester 2-3, ethylene glycol 5-8, titanium ethanolate 1-2, attapulgite 100-120, water are appropriate, auxiliary agent 5-10,3-5% hydrochloric acid soln 20-30;

Described auxiliary agent is made up of the raw material of following weight part: iso-octyl palmitate 0.2-0.3, Porasil 2-3, urethane resin 0.4-0.6, ethylene glycol 3-5, vitamin-E 0.3-0.4, activated alumina 0.3-0.5, linolenic acid 0.2-0.3, sodium lignosulfonate 0.3-0.4, pearl powder 1-1.5, bamboo fibers 0.2-0.3, magnesium sulfate heptahydrate 0.1-0.2, wood charcoal powder 2-3, succsinic acid 0.2-0.3, double stearic acid aluminium 0.2-0.4, medical stone powder 3-5, silane coupling agent KH-5721-2; Preparation method is: Porasil, pearl powder, wood charcoal powder, medical stone powder, silane coupling agent KH-572 mixed grinding is even, obtain mixed powder; By other remaining component mixing and stirring, with gained powder mixed grinding 20-30 minute, reheat to 60-70 DEG C, griding reaction 30-40 minute, to obtain final product again.

2. the preparation method of heat resistant rubber filler according to claim 1, is characterized in that comprising the following steps:

(1) attapulgite is sent into calcining furnace, at 300-400 DEG C, calcine 3-4 hour, take out and pulverize, cross 20 mesh sieves, add in the water of 340-360 weight part, under 100-200 rev/min, stir 10-12 hour, obtain attapulgite suspension, add 3-5% hydrochloric acid soln, the two octadecyl Dimethyl Ammonium of bromination, be heated to 50-60 DEG C, stir 1-2 hour, then add while stirring 3-5% sodium hydroxide solution to continue to stir 1-2 hour, filter, being washed to pH value is 6-8, refilter, dry, obtain activating attapulgite powder;

(2) other remaining components are ground evenly, add in residue water, stir, obtain slurry;

(3) blow the warm air of 60-70 DEG C to attapulgite powder it is seethed, then spray into the slurry that (2) vaporific step obtains in the powder seething, after the two is fully mixed, maintenance temperature is 60-70 DEG C, continues to seethe 30-40 minute;

(4) mixture (3) step being obtained is dried, and grinds to form the particle of 5-80 μ m, to obtain final product.