CN104910467A - Modified black-sand rubber material - Google Patents

Abstract

The invention discloses a modified black-sand rubber material composed of the raw materials of, by weight, 0.6-1 part of parachlorometaxylenol, 2-3 parts of ammonium trimolybdate, 47-50 parts of attapulgite, 0.3-0.6 parts of hexamethyl cyclotrisiloxane, 0.2-0.6 parts of 8-10% sulfuric acid, 26-30 parts of melamine, 5-8 parts of a 37% formaldehyde solution, 7-10 parts of urea, 0.7-2 parts of ascorbic acid, 6-10 parts of microcrystalline cellulose, 1-1.2 parts of isopropanol, 3-4 parts of maleic anhydride, 210-230 parts of neoprene S40V, 4-7 parts of vinyl carboxylate, 3-4 parts of an anti-aging agent NBC, and 2-4 parts of sulfur. According to the invention, with the crosslinking effect of maleic anhydride, microcrystalline cellulose forms a closer network structure in melamine resin formed by melamine, urea and formaldehyde, such that resin viscosity and tensile deformation resistance are well improved, and certain reinforcement and tackifying effects are provided in rubber. Therefore, rubber flexural cracking resistance, hot air aging resistance and stability are improved. With added modified black sand, production cost can be effectively reduced, an effect of resource recycling is provided, and rubber toughness and surface strength are effectively improved.

Description

The black husky elastomeric material of a kind of modification

Technical field

The present invention relates generally to rubber materials, particularly relates to the black husky elastomeric material of a kind of modification.

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 the black husky elastomeric material of a kind of modification.

The present invention is achieved by the following technical solutions:

The black husky elastomeric material of a kind of modification, it is made up of the raw material of following weight parts:

Sulfuric acid 0.2-0.6, the trimeric cyanamide 26-30 of black husky 5-7, sodium metnylene bis-naphthalene sulfonate 1.2-3, polyethylene powder 8-10, ethyl p-hydroxybenzoate 6-10, light calcium carbonate 50-53,8-10%, 37% formaldehyde solution 5-8, urea 7-10, Microcrystalline Cellulose 6-10, Virahol 1-1.2, maleic anhydride 3-4, chloroprene rubber S40V 210-230, potassium primary phosphate 2-3, sodium carbonate 1-2, sulphur 2-3, anti-aging agent CEA3-4.

A preparation method for the black husky elastomeric material of modification, comprises the following steps:

(1) joined by Microcrystalline Cellulose 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) above-mentioned sodium metnylene bis-naphthalene sulfonate is joined in 3-4 times of water, after stirring, add anhydride cellulose, obtain activation anhydride cellulose;

(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, pass into the 0.5-1% trolamine aqueous solution, be cooled to 60-65 DEG C, add activation anhydride cellulose, natural reaction 140-150 minute, regulate PH to 7-7.5, distillation and concentration, obtains anhydride cellulose resin;

(4) mixed with sodium carbonate by Hei Sha, reacting by heating 30-40 minute at 100-120 DEG C, is cooled to normal temperature, joins in 10% sulphuric acid soln, soak 1-2 hour, filter, filter residue is washed, dry, mix with light calcium carbonate, ethyl p-hydroxybenzoate, stir, obtain the black sand of modification;

(5) black for modification sand, 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 polyethylene powder, refining 2-3min is opened under roll spacing is 2mm, add anti-aging agent CEA, 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, certain reinforcement and viscosifying action is played in elastomeric material, improve to resist and deflect be full of cracks, thermal aging property and stability, the black sand of the modification that the present invention adds, production cost can be effectively reduced, serve the effect of resource recycling, and effectively raise toughness and the surface strength of rubber.

Embodiment

Embodiment 1:

The black husky elastomeric material of a kind of modification, is characterized in that what it was made up of the raw material of following weight parts:

Black husky 7, sodium metnylene bis-naphthalene sulfonate 1.2, polyethylene powder 10, ethyl p-hydroxybenzoate 10, the sulfuric acid 0.2-0.6 of light calcium carbonate 53,10%, trimeric cyanamide 30,37% formaldehyde solution 8, urea 10, Microcrystalline Cellulose 10, Virahol 1.2, maleic anhydride 3, chloroprene rubber S40V 230, potassium primary phosphate 3, sodium carbonate 2, sulphur 3, anti-aging agent CEA4.

A preparation method for the black husky elastomeric material of modification, comprises the following steps:

(1) joined by Microcrystalline Cellulose 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) above-mentioned sodium metnylene bis-naphthalene sulfonate is joined in 4 times of water, after stirring, add anhydride cellulose, obtain activation anhydride cellulose;

(3) trimeric cyanamide, urea, 37% formaldehyde solution are mixed to join in reactor, when being heated to 70-80 DEG C, sealed reaction 10 hours, pass into the 0.5% trolamine aqueous solution, be cooled to 60-65 DEG C, add activation anhydride cellulose, natural reaction 150 minutes, regulate PH to 7.5, distillation and concentration, obtains anhydride cellulose resin;

(4) mixed with sodium carbonate by Hei Sha, at 120 DEG C, reacting by heating 40 minutes, is cooled to normal temperature, joins in 10% sulphuric acid soln, soaks 2 hours, filters, and is washed by filter residue, dries, mixes, stir, obtain the black sand of modification with light calcium carbonate, ethyl p-hydroxybenzoate;

(5) black for modification sand, 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 polyethylene powder, under roll spacing is 2mm, opens refining 3min, adds anti-aging agent CEA, begin to pratise 6-10min 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: 19.4MPa;

Elongation at break: 393%;

Oil-proofness: 20# machine oil 100 DEG C × 70h, elongation at break conservation rate 72.1%, tensile strength retention 72.2%;

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

Ageing-resistant: 120 DEG C, 150h, tensile strength retention 89.1%, elongation at break conservation rate 77.7%;

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

Claims (2)

1. the black husky elastomeric material of modification, 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 black husky 5-7, sodium metnylene bis-naphthalene sulfonate 1.2-3, polyethylene powder 8-10, ethyl p-hydroxybenzoate 6-10, light calcium carbonate 50-53,8-10%, 37% formaldehyde solution 5-8, urea 7-10, Microcrystalline Cellulose 6-10, Virahol 1-1.2, maleic anhydride 3-4, chloroprene rubber S40V 210-230, potassium primary phosphate 2-3, sodium carbonate 1-2, sulphur 2-3, anti-aging agent CEA3-4.

2. a preparation method for the black husky elastomeric material of modification as claimed in claim 1, is characterized in that comprising the following steps:

(1) joined by Microcrystalline Cellulose 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) above-mentioned sodium metnylene bis-naphthalene sulfonate is joined in 3-4 times of water, after stirring, add anhydride cellulose, obtain activation anhydride cellulose;

(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, pass into the 0.5-1% trolamine aqueous solution, be cooled to 60-65 DEG C, add activation anhydride cellulose, natural reaction 140-150 minute, regulate PH to 7-7.5, distillation and concentration, obtains anhydride cellulose resin;

(4) mixed with sodium carbonate by Hei Sha, reacting by heating 30-40 minute at 100-120 DEG C, is cooled to normal temperature, joins in 10% sulphuric acid soln, soak 1-2 hour, filter, filter residue is washed, dry, mix with light calcium carbonate, ethyl p-hydroxybenzoate, stir, obtain the black sand of modification;

(5) black for modification sand, 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 polyethylene powder, refining 2-3min is opened under roll spacing is 2mm, add anti-aging agent CEA, 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.