CN104927137A - Nano carbon rubber material - Google Patents

Abstract

The invention discloses a nano carbon rubber material which is prepared from the following raw materials in parts by weight: 0.5 to 1 part of potassium citrate, 0.2 to 0.6 parts of 8 to 10 percent sulfuric acid, 26 to 30 parts of melamine, 5 to 8 parts of 37 percent formaldehyde solution, 7 to 10 parts of urea, 6 to 10 parts of microcrystalline cellulose, 1 to 1.2 parts of isopropanol, 2 to 3 parts of sulfur, 3 to 4 parts of maleic anhydride, 3 to 4 parts of molybdenum boride, 210 to 230 parts of chloroprene rubber S40V, 2 to 3 parts of aluminium potassium sulfate, 2 to 3 parts of phosphate, 6 to 10 parts of dioctyl phthalate, 0.4 to 1 part of nonylphenol polyoxyethylene ether, 40 to 43 parts of nano carbon powder, 2 to 3 parts of a promoting agent CA and 3 to 4 parts of an anti-aging agent TNP. Under the crosslinking action of maleic anhydride, a closer network structure is formed by microcrystalline cellulose in melamine resin formed by melamine, urea and formaldehyde, so that the viscosity and the tensile deformation resistance of the resin are well improved; certain reinforcement and viscosity increase effects are achieved in a rubber material, and the deflection, cracking, hot air aging resistance performances and the stability are improved.

Description

A kind of nano-sized carbon elastomeric material

Technical field

The present invention relates generally to rubber materials, particularly relates to a kind of nano-sized carbon elastomeric material.

Background technology

Chloroprene rubber take chloroprene as main raw material, by homopolymerization or other monomer copolymerization on a small quantity.As tensile strength is high, heat-resisting, fast light, ageing-resistant performance is excellent, oil resistance is all better than natural rubber, styrene-butadiene rubber(SBR), cis-1,4-polybutadiene rubber.Have stronger flame resistivity and excellent fire retardance, its chemical stability is higher, and water tolerance is good.The shortcoming of chloroprene rubber is electrical insulation capability, and cold tolerance is poor, and rubber is unstable when storing.Chloroprene rubber is of many uses, as being used for making travelling belt and transmission belt, the coating material of electric wire, cable, manufactures the equipment lining of oil resisting rubber hose, packing ring and resistance to chemical attack;

Mierocrystalline cellulose has the chemical structure similar to starch, it is the natural macromolecular material that plant is synthesized by photosynthesis, it is extensively present in plant, in animal and bacterium, the producible Mierocrystalline cellulose of annual nature is up to 1010 ~ 1011 tons, there is the unrivaled degradability of petrochemicals, recyclability and environment friendly, pollution-free to ecotope, without the desirable green resource destroyed, wherein Microcrystalline Cellulose resource has aboundresources, renewable, cost is low, density is low, intensity is high, advantages of environment protection, for can mechanics be improved in elastomeric material, thermal-oxidative aging property.

Summary of the invention

The object of the invention is just to provide a kind of nano-sized carbon elastomeric material.

The present invention is achieved by the following technical solutions:

A kind of nano-sized carbon elastomeric material, it is made up of the raw material of following weight parts:

Sulfuric acid 0.2-0.6, the trimeric cyanamide 26-30 of Tripotassium Citrate 0.5-1,8-10%, 37% formaldehyde solution 5-8, urea 7-10, Microcrystalline Cellulose 6-10, Virahol 1-1.2, sulphur 2-3, maleic anhydride 3-4, molybdenum boride 3-4, chloroprene rubber S40V 210-230, potassium aluminium sulfate 2-3, phosphoric acid ester 2-3, dioctyl ester 6-10, polyoxyethylene nonylphenol ether 0.4-1, nano-carbon powder 40-43, accelerant C A2-3, anti-aging agent TNP3-4.

A preparation method for nano-sized carbon elastomeric material, comprises the following steps:

(1) by Microcrystalline Cellulose, Tripotassium Citrate mixing, join in 2-3 times of water, add Virahol, maleic anhydride, add the sulfuric acid of 8-10% after stirring, in the water-bath of 50-60 DEG C, react 6-7h, regulate pH to neutral, decompression steams moisture and Virahol, obtains anhydride cellulose;

(2) joined by polyoxyethylene nonylphenol ether in 16-20 times of water, add anhydride cellulose after stirring, 30-50 rev/min of dispersed with stirring 10-20 minute, must disperse anhydride cellulose liquid;

(3) trimeric cyanamide, urea, 37% formaldehyde solution are mixed to join in reactor, when being heated to 70-80 DEG C, sealed reaction 10-15 hour, add anhydride cellulose, adjustment temperature is 60-65 DEG C, natural reaction 140-150 minute, regulates PH to 7-7.5, distillation and concentration, obtains anhydride cellulose resin;

(4) by molybdenum boride, potassium aluminium sulfate mixing, ball milling is even, adds phosphoric acid ester, joins in batch mixing weight 3-5 times water, add the 10-20% of above-mentioned nano-carbon powder weight, is heated with stirring to water and does, add dioctyl ester, stir, obtain nanometer ester batch mixing at 80-90 DEG C;

(5) nanometer ester batch mixing, anhydride cellulose resin, chloroprene rubber S40V are mixed, the roll spacing regulating mill is 1mm, thin-pass bag roller is plasticated 1min on a mill until, add remaining nano-carbon powder, refining 2-3min is opened under roll spacing is 2mm, add anti-aging agent TNP, begin to pratise 6-10min under 3mm roll spacing, add each raw material of residue, play triangle bag 5-6 time, slice, park 6-7 hour, send into vulcanizing press sulfidization molding, curing temperature 150-160 DEG C, sulfide stress 8-10Mpa, curing time 12-15min.

Advantage of the present invention is:

The present invention is by the crosslinked action of Microcrystalline Cellulose by maleic anhydride, more close network structure is formed in the melamine resin that trimeric cyanamide, urea and formaldehyde are formed, well improve viscosity and the opposing tensile deformation performance of resin, in elastomeric material, play certain reinforcement and viscosifying action, improve and anti-deflect be full of cracks, thermal aging property and stability.

Embodiment

Embodiment 1:

A kind of nano-sized carbon elastomeric material, is characterized in that what it was made up of the raw material of following weight parts:

The sulfuric acid 0.6 of Tripotassium Citrate 0.5,8-10%, trimeric cyanamide 30,37% formaldehyde solution 8, urea 10, Microcrystalline Cellulose 10, Virahol 1.2, sulphur 3, maleic anhydride 4, molybdenum boride 4, chloroprene rubber S40V 230, potassium aluminium sulfate 2, phosphoric acid ester 2, dioctyl ester 10, polyoxyethylene nonylphenol ether 0.4, nano-carbon powder 43, accelerant C A3, anti-aging agent TNP4.

A preparation method for nano-sized carbon elastomeric material, comprises the following steps:

(1) by Microcrystalline Cellulose, Tripotassium Citrate mixing, join in 3 times of water, add Virahol, maleic anhydride, add the sulfuric acid of 10% after stirring, in the water-bath of 60 DEG C, react 7h, regulate pH to neutral, decompression steams moisture and Virahol, obtains anhydride cellulose;

(2) joined by polyoxyethylene nonylphenol ether in 20 times of water, add anhydride cellulose after stirring, 50 revs/min of dispersed with stirring 20 minutes, must disperse anhydride cellulose liquid;

(3) trimeric cyanamide, urea, 37% formaldehyde solution are mixed to join in reactor, when being heated to 80 DEG C, sealed reaction 15 hours, add anhydride cellulose, regulate temperature to be 65 DEG C, natural reaction 150 minutes, regulate PH to 7.5, distillation and concentration, obtains anhydride cellulose resin;

(4) by molybdenum boride, potassium aluminium sulfate mixing, ball milling is even, adds phosphoric acid ester, joins in batch mixing weight 3-5 times water, is heated with stirring to water and does, add dioctyl ester, stir, obtain nanometer ester batch mixing at adding 20%, 90 DEG C of above-mentioned nano-carbon powder weight;

(5) nanometer ester batch mixing, anhydride cellulose resin, chloroprene rubber S40V are mixed, regulate the roll spacing of mill to be 1mm, thin-pass bag roller is plasticated 1min on a mill until, add remaining nano-carbon powder, under roll spacing is 2mm, opens refining 3min, adds anti-aging agent TNP, begin to pratise 10min under 3mm roll spacing, add each raw material of residue, play triangle bag 5 times, slice, park 6 hours, send into vulcanizing press sulfidization molding, curing temperature 160 DEG C, sulfide stress 10Mpa, curing time 15min.

Performance test:

Tensile strength: 19.3MPa;

Elongation at break: 397%;

Oil-proofness: 20# machine oil 100 DEG C × 70h, elongation at break conservation rate 72.6%, tensile strength retention 72.8%;

Resistance to ozone: 25 DEG C, 24h, ozone concn 0.025%, without cracking;

Ageing-resistant: 120 DEG C, 150h, tensile strength retention 89.4%, elongation at break conservation rate 77.3%;

Cold-resistant experiment: (-40 DEG C, 4h): flawless.

Claims (2)

1. a nano-sized carbon elastomeric material, is characterized in that what it was made up of the raw material of following weight parts:

Sulfuric acid 0.2-0.6, the trimeric cyanamide 26-30 of Tripotassium Citrate 0.5-1,8-10%, 37% formaldehyde solution 5-8, urea 7-10, Microcrystalline Cellulose 6-10, Virahol 1-1.2, sulphur 2-3, maleic anhydride 3-4, molybdenum boride 3-4, chloroprene rubber S40V 210-230, potassium aluminium sulfate 2-3, phosphoric acid ester 2-3, dioctyl ester 6-10, polyoxyethylene nonylphenol ether 0.4-1, nano-carbon powder 40-43, accelerant C A2-3, anti-aging agent TNP3-4.

2. a preparation method for nano-sized carbon elastomeric material as claimed in claim 1, is characterized in that comprising the following steps:

(1) by Microcrystalline Cellulose, Tripotassium Citrate mixing, join in 2-3 times of water, add Virahol, maleic anhydride, add the sulfuric acid of 8-10% after stirring, in the water-bath of 50-60 DEG C, react 6-7h, regulate pH to neutral, decompression steams moisture and Virahol, obtains anhydride cellulose;

(2) joined by polyoxyethylene nonylphenol ether in 16-20 times of water, add anhydride cellulose after stirring, 30-50 rev/min of dispersed with stirring 10-20 minute, must disperse anhydride cellulose liquid;

(3) trimeric cyanamide, urea, 37% formaldehyde solution are mixed to join in reactor, when being heated to 70-80 DEG C, sealed reaction 10-15 hour, add anhydride cellulose, adjustment temperature is 60-65 DEG C, natural reaction 140-150 minute, regulates PH to 7-7.5, distillation and concentration, obtains anhydride cellulose resin;

(4) by molybdenum boride, potassium aluminium sulfate mixing, ball milling is even, adds phosphoric acid ester, joins in batch mixing weight 3-5 times water, add the 10-20% of above-mentioned nano-carbon powder weight, is heated with stirring to water and does, add dioctyl ester, stir, obtain nanometer ester batch mixing at 80-90 DEG C;

(5) nanometer ester batch mixing, anhydride cellulose resin, chloroprene rubber S40V are mixed, the roll spacing regulating mill is 1mm, thin-pass bag roller is plasticated 1min on a mill until, add remaining nano-carbon powder, refining 2-3min is opened under roll spacing is 2mm, add anti-aging agent TNP, begin to pratise 6-10min under 3mm roll spacing, add each raw material of residue, play triangle bag 5-6 time, slice, park 6-7 hour, send into vulcanizing press sulfidization molding, curing temperature 150-160 DEG C, sulfide stress 8-10Mpa, curing time 12-15min.