CN104194065A - Thermally stable plastic filler and preparation method thereof - Google Patents

Abstract

The invention provides a thermally stable plastic filler. The thermally stable plastic filler is prepared from the following raw materials in parts by weight: 1-2 parts of xanthan gum, 2-3 parts of acrylic acid, 1-2 parts of ethyl hexyl acrylate, 0.1-0.2 part of potassium peroxodisulfate, 1-2 parts of sodium hypophosphite, 2-3 parts of sodium citrate, 1-2 parts of polyethylene glycol octylphenol ether, 2-3 parts of methyl tin mercaptide, 4-5 parts of nano sepiolite powder, 100-120 parts of attapulgite clay, an appropriate amount of water, 5-10 parts of auxiliaries and 30-40 parts of 8-10% hydrochloric acid solution. The thermally stable plastic filler is added with the attapulgite clay and activated and modified, so that the thermal stable plastic filler is improved in suspension property, thickening property and compatibility with plastics; as the thermally stable plastic filler is added with the methyl tin mercaptide, the thermal stability of the plastics (in particular PVC) can be improved; furthermore, due to the added nano sepiolite powder, the strength and tenacity of the plastics are enhanced.

Description

A kind of heat-stable plastic filler and preparation method thereof

Technical field

The invention belongs to attapulgite manufacture field, particularly a kind of heat-stable plastic 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 whole 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-stable plastic filler and preparation method thereof, this filler suspension, thickening property are good, and good with the consistency of plastics, the thermostability that can increase plastics (especially PVC) has increased intensity and the toughness of plastics.

Technical scheme of the present invention is as follows:

A heat-stable plastic filler, is characterized in that being made by the raw material of following weight part: xanthan gum 1-2, vinylformic acid 2-3, Octyl acrylate 1-2, Potassium Persulphate 0.1-0.2, inferior sodium phosphate 1-2, Trisodium Citrate 2-3, Triton X-100 1-2, thiol methyl tin 2-3, nanometer sepiolite powder 4-5, attapulgite 100-120, water are appropriate, auxiliary agent 5-10,8-10% hydrochloric acid soln 30-40;

Described auxiliary agent is made by 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 ℃, griding reaction 30-40 minute, obtains again.

The preparation method of described heat-stable plastic filler, is characterized in that comprising the following steps:

(1) attapulgite is sent into calcining furnace, at 300-400 ℃, 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 8-10% hydrochloric acid soln, be heated to 50-60 ℃, stir 1-2 hour, then add while stirring inferior sodium phosphate, Trisodium Citrate 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) to attapulgite powder, blow the warm air of 60-70 ℃ 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 ℃, 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, obtains.

Beneficial effect of the present invention

Filler of the present invention has been used attapulgite, by its activation modification, has increased its suspension, thickening property, improves the consistency of itself and plastics; By adding thiol methyl tin, can increase the thermostability of plastics (especially PVC); Intensity and the toughness of plastics by adding nanometer sepiolite powder, have been increased.

Embodiment

A heat-stable plastic filler, by following weight part (kilogram) raw material make: xanthan gum 1.5, vinylformic acid 2.5, Octyl acrylate 1.5, Potassium Persulphate 0.1, inferior sodium phosphate 1.5, Trisodium Citrate 2.5, Triton X-100 1.5, thiol methyl tin 2.5, nanometer sepiolite powder 4.5, attapulgite 110, water are appropriate, auxiliary agent 7,9% hydrochloric acid soln 35;

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 ℃, griding reaction 35 minutes, obtains.

The preparation method of described heat-stable plastic filler, comprises the following steps:

(1) attapulgite is sent into calcining furnace, at 350 ℃, 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 9% hydrochloric acid soln, be heated to 55 ℃, stir 1.5 hours, then add while stirring inferior sodium phosphate, Trisodium Citrate to continue to stir 1.5 hours, filter, being washed to pH value is 6, refilter, dry, obtain activating attapulgite powder;

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

(3) to attapulgite powder, blow the warm air of 65 ℃ 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 ℃, continues to seethe 35 minutes;

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

Experimental data:

The attapulgite modified specific surface area of the present embodiment is 276 ㎡/g, is added to the water by 4%, and tested viscosity is 12820.3mPa.s, dissolution time≤5min.This filler is used for producing flexible PVC test piece, and addition is 20%, and the performance test results is: yield strength 5.64Mpa, breaking tenacity is 6.95Mpa, elongation at break 118%, Young's modulus 67.53Mpa.Go out from the experimental results, this filler is excellent for plastics performance.

Claims (2)

1. a heat-stable plastic filler, is characterized in that being made by the raw material of following weight part: xanthan gum 1-2, vinylformic acid 2-3, Octyl acrylate 1-2, Potassium Persulphate 0.1-0.2, inferior sodium phosphate 1-2, Trisodium Citrate 2-3, Triton X-100 1-2, thiol methyl tin 2-3, nanometer sepiolite powder 4-5, attapulgite 100-120, water are appropriate, auxiliary agent 5-10,8-10% hydrochloric acid soln 30-40;

Described auxiliary agent is made by 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 ℃, griding reaction 30-40 minute, obtains again.

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

(1) attapulgite is sent into calcining furnace, at 300-400 ℃, 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 8-10% hydrochloric acid soln, be heated to 50-60 ℃, stir 1-2 hour, then add while stirring inferior sodium phosphate, Trisodium Citrate 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) to attapulgite powder, blow the warm air of 60-70 ℃ 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 ℃, 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, obtains.