CN105504375A - High-weather-resistance natural rubber material and preparation method thereof - Google Patents

Abstract

The invention discloses a high-weather-resistance natural rubber material. The high-weather-resistance natural rubber material is prepared from, by weight, 1-2 parts of casein, 4-6 parts of diethylene glycol dibenzoate, 100-140 parts of natural rubber, 20-30 parts of kaolinite, 400-500 parts of dimethyl sulfoxide, 900-1000 parts of methanol, 70-80 parts of N-methyl imidazole, 100-120 parts of bromoethane, 4-6 parts of nano silicon oxide, 1-2 parts of an anti-aging agent tnp, 1-1.6 parts of sulfur, 1-2 parts of alkanolamide, 1-2 parts of a promoter CZ and 3-4 parts of poly butyl acrylate. The high-weather-resistance natural rubber material has good weatherability, is resistant to heat, cold, acid and alkali corrosion and salt fog and has strong ozone resistance and superior comprehensive performance.

Description

A kind of high durable natural rubber material and preparation method thereof

Technical field

The present invention relates to field of rubber technology, particularly relate to a kind of high durable natural rubber material and preparation method thereof.

Background technology

Kaolinite belongs to the kaolin (kaolinite of l: l type laminate structure, dickite, nakrite, one of halloysite etc.) clay mineral, to be superposed by 1: 1 by SiO4 tetrahedrallayer and AlO2 (OH) 4 octahedral layer and form asymmetric laminate structure, thus establish large folded dipole, interlayer is with (Al-O-H ... O-Si) hydrogen bond is connected, interlamellar spacing is about 072nm, isomorphous substitution is there is not in kaolinic lattice, interlamination region electric charge balances substantially, causing in its two-dimensional layer can not Liquidity limit, in addition, due to the interaction of the hydrogen bond force between layer and Van der Waals force, make it have sizable interior poly-, thus connect between crystal layer closely, stable performance, the organic guest molecule of its intercalation has more challenge compared to the montmorillonite of intercalation montmorillonite group.

However, the small molecules of some strong polarity, as dimethyl sulfoxide (DMSO), Potassium ethanoate, methane amide, urea, hydrazine etc. successfully as presoma to other organic molecules as pyridinium chloride, amino alcohol and pyridine carboxylic acid carry out further intercalation, along with going deep into of research, some other small molecules and macromole, as propylene glycol, polyacrylamide, polyoxyethylene glycol, polystyrene etc. also can enter interlayer by the mode of carrying secretly or replace kaolinite organic molecule mixture small molecular, the intercalated compound be substituted is called presoma, methyl alcohol also can be used as the intermediate of intercalated compound, under extreme temperature condition, fixing guest molecule is inserted in the alkyl imidazole clay processed, demonstrate excellent stability.

In addition, ionic liquid is inserted kaolinite interlayer and forms nanostructure by scholar, be widely used in electrode modification, catalyzer and detect the aspects such as negatively charged ion. ionic liquid intercalation kaolinite has good thermostability, specific conductivity and optical property, but kaolinic preparation method is single for external ionic liquid intercalation, and the cycle is longer, technique is loaded down with trivial details, by improving in the present invention, simplify experiment flow, shorten the reaction times, good intercalation effect can be obtained simultaneously.

Summary of the invention

The object of the invention is exactly the defect in order to make up prior art, provides a kind of high durable natural rubber material and preparation method thereof.

The present invention is achieved by the following technical solutions:

A kind of high durable natural rubber material, it is made up of the raw material of following weight parts:

Casein food grade 1-2, diethylene glycol dibenzoate 4-6, natural rubber 100-140, kaolinite 20-30, dimethyl sulfoxide (DMSO) 400-500, methyl alcohol 900-1000, N-Methylimidazole 70-80, monobromethane 100-120, nano silicon oxide 4-6, anti-aging agent tnp1-2, sulphur 1-1.6, alkylolamide 1-2, accelerant CZ 1-2, butyl polyacrylate 3-4.

A preparation method for described high durable natural rubber material, comprises the following steps:

(1) above-mentioned kaolinite is worn into fine powder, join in its weight 1.6-2 distilled water doubly, add dimethyl sulfoxide (DMSO), with magnetic stirrer 70-72 hour under room temperature, suction filtration, filter cake is after absolute ethanol washing, dry 20-24 hour at 60-65 DEG C, obtains methyl kaolinite mixture;

(2) in above-mentioned methyl kaolinite mixture, add above-mentioned methyl alcohol, room temperature condition lower magnetic force stirs 20-30 hour, obtains methyl alcohol kaolinite mixture;

(3) join in the thermostatic mixer of 60-65 DEG C by above-mentioned N-Methylimidazole, drip monobromethane, dropwise rear insulated and stirred 40-50 hour, discharging, with ethyl acetate washing 3-4 time, dry 20-24 hour in the baking oven of 70-75 DEG C, obtains bromine salt ion body;

(4) join in bromine salt ion body by above-mentioned methyl alcohol kaolinite mixture, magnetic agitation 20-23 hour, centrifugal, washed 2-3 time by the solid precipitation propyl carbinol obtained, at 50-60 DEG C, dry 20-22 hour, obtains intercalated compound;

(5) joined by nano silicon oxide in its weight 20-25 chloroform soln doubly, ultrasonic disperse 3-5 minute is liquid a;

(6) joined in 10-16 times of deionized water by above-mentioned casein food grade, stir, add alkylolamide, insulated and stirred 10-13 minute at 60-65 DEG C, obtains dispersion soln;

(7) above-mentioned intercalated compound is joined in its weight 4-6 chloroform soln doubly, ultrasonic disperse 1.6-2 minute, mix with above-mentioned liquid a, the dehydrated alcohol of mixed system weight 4-6% is added under agitation condition, add above-mentioned dispersion soln, stir 3-5 minute, suction filtration, by filter cake dry 2-3 hour in the vacuum drying oven of 100-106 DEG C, obtain modified filler;

(8) above-mentioned diethylene glycol dibenzoate is joined in its weight 4-6 times dehydrated alcohol, stir, add the 5-7% of anti-aging agent tnp, above-mentioned natural rubber weight, send in the water-bath of 70-80 DEG C, insulated and stirred 10-13 minute, discharging cools, underpressure distillation, removing ethanol, obtains modified natural rubber;

(9) by above-mentioned modified filler, modified natural rubber, the mixing of remaining natural rubber, send in Banbury mixer, banburying 40-50s at 65-90 DEG C, adds each raw material except accelerant CZ, sulphur, mixing 10-12 minute, binder removal, be cooled to less than 50 DEG C, drop in mill, add each raw material of residue, thin-pass 3-5 time, to obtain final product.

Advantage of the present invention is:

Rubber product of the present invention has good resistance toheat:

Of the present invention by monobromethane process N-Methylimidazole, obtain bromine salt ion body, stronger hydrogen bond can be produced with kaolinic internal surface hydroxyl after intercalation, new H-bonding capability is considerably beyond hydrogen bond in original kaolinic layer, thus improve kaolinic resistance toheat, and then improve the resistance of finished-product material to persistent high fever;

Rubber product of the present invention has good anti-ultraviolet property:

The present invention is through bromine salt ion body intercalation kaolin stone, stronger hydrogen bond can be produced by surface hydroxyl within it, the quantum yield of its fluorescence and chemical reaction more than without position between intramolecular hydrogen bond and para-isomeride low, there iing the occasion internal conversion of intramolecular hydrogen bond than without fast more than 100 times of hydrogen bond, the UV energy of absorption can be transformed into heat energy by the effect of hydrogen bond to disperse, thus play the effect of protection elastomeric material;

Rubber of the present invention has good weathering resistance, and heat-resisting, cold-resistant, acid-alkali-corrosive-resisting, salt spray resistance, ozone resistance are strong, and over-all properties is superior.

Embodiment

A kind of high durable natural rubber material, it is made up of the raw material of following weight parts:

Casein food grade 1, diethylene glycol dibenzoate 4, natural rubber 100, kaolinite 20, dimethyl sulfoxide (DMSO) 400, methyl alcohol 900, N-Methylimidazole 70, monobromethane 100, nano silicon oxide 4, anti-aging agent tnp1, sulphur 1, alkylolamide 1, accelerant CZ 1, butyl polyacrylate 3.

A preparation method for described high durable natural rubber material, comprises the following steps:

(1) above-mentioned kaolinite is worn into fine powder, join in the distilled water of its weight 1.6 times, add dimethyl sulfoxide (DMSO), use magnetic stirrer 70 hours under room temperature, suction filtration, filter cake is after absolute ethanol washing, at 60 DEG C, drying 20 hours, obtains methyl kaolinite mixture;

(2) in above-mentioned methyl kaolinite mixture, add above-mentioned methyl alcohol, room temperature condition lower magnetic force stirs 20 hours, obtains methyl alcohol kaolinite mixture;

(3) join in the thermostatic mixer of 60 DEG C by above-mentioned N-Methylimidazole, drip monobromethane, dropwise rear insulated and stirred 40 hours, discharging, wash 3 times by ethyl acetate, in the baking oven of 70 DEG C, drying 20 hours, obtains bromine salt ion body;

(4) join in bromine salt ion body by above-mentioned methyl alcohol kaolinite mixture, magnetic agitation 20 hours, centrifugal, the solid precipitation propyl carbinol obtained is washed 2 times, and at 50 DEG C, drying 20 hours, obtains intercalated compound;

(5) being joined by nano silicon oxide in the chloroform soln of its weight 20 times, ultrasonic disperse 3 minutes, is liquid a;

(6) joined in 10 times of deionized waters by above-mentioned casein food grade, stir, add alkylolamide, at 60 DEG C, insulated and stirred 10 minutes, obtains dispersion soln;

(7) above-mentioned intercalated compound is joined in the chloroform soln of its weight 4 times, ultrasonic disperse 1.6 minutes, mix with above-mentioned liquid a, the dehydrated alcohol of mixed system weight 4% is added under agitation condition, add above-mentioned dispersion soln, stir 3 minutes, suction filtration, by filter cake in the vacuum drying oven of 100 DEG C dry 2 hours, obtain modified filler;

(8) above-mentioned diethylene glycol dibenzoate is joined in its weight 4 times of dehydrated alcohols, stirs, add anti-aging agent tnp, above-mentioned natural rubber weight 5%, send in the water-bath of 70 DEG C, insulated and stirred 10 minutes, discharging cools, underpressure distillation, removing ethanol, obtains modified natural rubber;

(9) by above-mentioned modified filler, modified natural rubber, the mixing of remaining natural rubber, send in Banbury mixer, banburying 40s at 65 DEG C, adds each raw material except accelerant CZ, sulphur, mixing 10 minutes, binder removal, be cooled to less than 50 DEG C, drop in mill, add each raw material of residue, thin-pass 3 times, to obtain final product.

Performance test:

Tensile strength: 14.4Mpa;

Elongation at break: 431.2%;

70 DEG C × 22h × 20% compression set: 16.0%;

70 DEG C × 70h air oven aging test:

Tensile strength at yield reduced rate: 5.2%, elongation at break reduced rate: 8.0%.

Claims (2)

1. a high durable natural rubber material, is characterized in that, it is made up of the raw material of following weight parts:

Casein food grade 1-2, diethylene glycol dibenzoate 4-6, natural rubber 100-140, kaolinite 20-30, dimethyl sulfoxide (DMSO) 400-500, methyl alcohol 900-1000, N-Methylimidazole 70-80, monobromethane 100-120, nano silicon oxide 4-6, anti-aging agent tnp1-2, sulphur 1-1.6, alkylolamide 1-2, accelerant CZ 1-2, butyl polyacrylate 3-4.

2. a preparation method for high durable natural rubber material as claimed in claim 1, is characterized in that, comprise the following steps:

(1) above-mentioned kaolinite is worn into fine powder, join in its weight 1.6-2 distilled water doubly, add dimethyl sulfoxide (DMSO), with magnetic stirrer 70-72 hour under room temperature, suction filtration, filter cake is after absolute ethanol washing, dry 20-24 hour at 60-65 DEG C, obtains methyl kaolinite mixture;

(2) in above-mentioned methyl kaolinite mixture, add above-mentioned methyl alcohol, room temperature condition lower magnetic force stirs 20-30 hour, obtains methyl alcohol kaolinite mixture;

(3) join in the thermostatic mixer of 60-65 DEG C by above-mentioned N-Methylimidazole, drip monobromethane, dropwise rear insulated and stirred 40-50 hour, discharging, with ethyl acetate washing 3-4 time, dry 20-24 hour in the baking oven of 70-75 DEG C, obtains bromine salt ion body;

(4) join in bromine salt ion body by above-mentioned methyl alcohol kaolinite mixture, magnetic agitation 20-23 hour, centrifugal, washed 2-3 time by the solid precipitation propyl carbinol obtained, at 50-60 DEG C, dry 20-22 hour, obtains intercalated compound;

(5) joined by nano silicon oxide in its weight 20-25 chloroform soln doubly, ultrasonic disperse 3-5 minute is liquid a;

(6) joined in 10-16 times of deionized water by above-mentioned casein food grade, stir, add alkylolamide, insulated and stirred 10-13 minute at 60-65 DEG C, obtains dispersion soln;

(7) above-mentioned intercalated compound is joined in its weight 4-6 chloroform soln doubly, ultrasonic disperse 1.6-2 minute, mix with above-mentioned liquid a, the dehydrated alcohol of mixed system weight 4-6% is added under agitation condition, add above-mentioned dispersion soln, stir 3-5 minute, suction filtration, by filter cake dry 2-3 hour in the vacuum drying oven of 100-106 DEG C, obtain modified filler;

(8) above-mentioned diethylene glycol dibenzoate is joined in its weight 4-6 times dehydrated alcohol, stir, add the 5-7% of anti-aging agent tnp, above-mentioned natural rubber weight, send in the water-bath of 70-80 DEG C, insulated and stirred 10-13 minute, discharging cools, underpressure distillation, removing ethanol, obtains modified natural rubber;

(9) by above-mentioned modified filler, modified natural rubber, the mixing of remaining natural rubber, send in Banbury mixer, banburying 40-50s at 65-90 DEG C, adds each raw material except accelerant CZ, sulphur, mixing 10-12 minute, binder removal, be cooled to less than 50 DEG C, drop in mill, add each raw material of residue, thin-pass 3-5 time, to obtain final product.