CN103756037B - A kind of workability, ozone proof elastomeric material and preparation method thereof - Google Patents
A kind of workability, ozone proof elastomeric material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of workability, ozone proof elastomeric material and preparation method thereof.This elastomeric material comprises according to mass parts: the natural rubber of 70 ~ 120 parts; The ethylene-propylene-diene monomer rubber powder of 5 ~ 30 parts; The carbon black of 50 ~ 70 parts; The tenderizer of 20 ~ 30 parts; The zinc oxide of 4 ~ 6 parts; The stearic acid of 1 ~ 2 part; The sulphur of 1 ~ 2 part; The promotor of 3 ~ 5 parts; The anti-aging agent of 4 ~ 8 parts.Ethylene-propylene-diene monomer rubber powder is added in natural rubber by the present invention, and terpolymer EP rubber contains higher Third monomer, improves the ozone resistance of natural rubber.Ethylene-propylene-diene monomer rubber powder and natural rubber have good also use property, improve the resist processing of elastomeric material obtained thus, reduce cost.
Description
Technical field
The present invention relates to the technical field of elastomeric material, particularly relate to a kind of workability, ozone proof elastomeric material and preparation method thereof.
Background technology
Elastomeric material is the strong flexible polymer material with reversible deformation.At room temperature high resilience, can produce comparatively large deformation under very little External Force Acting, resilient after removing external force.Rubber is divided into natural rubber and synthetic rubber.The natural high moleculer eompound of natural rubber to be a kind of with polyisoprene be main component, other components such as the rubber hydrocarbon (polyisoprene) by 91% ~ 94% and protein, lipid acid, ash content, carbohydrate form.Natural rubber is most widely used conventional rubber.The natural rubber products ozone resistance of prior art and processing characteristics poor, in addition, production cost is also higher.
Summary of the invention
In view of this, one aspect of the present invention provides a kind of workability, ozone proof elastomeric material, and ozone resistance and the processing characteristics of this elastomeric material are higher.
A kind of workability, ozone proof elastomeric material, is characterized in that, comprise following feed composition according to mass parts:
Wherein, above-mentioned elastomeric material specifically comprises following feed composition according to mass parts:
In the feed composition of above elastomeric material, Ethylene Propylene Terpolymer rubber powder is that making granularity is 50 object flours by terpolymer EP rubber goods by fragmentation, grinding and filtration.
Tenderizer be in elastomeric material for improving sizing material plasticity, green stock is softened, contribute to other Synergist S-421 95s dispersion a kind of rubber ingredients.Tenderizer can cut off the molecular chain of minority rubber hydrocarbon, is a kind of weak peptizer.Tenderizer is preferably naphthenic oil.Naphthenic oil be obtain from petroleum fractionating with naphthenic hydrocarbon be main component containing the material of hydrocarbons compounds.The good speedup of it and rubber and mutual solubility.
Anti-aging agent is for preventing elastomeric material or the aging rubber ingredients of goods.Anti-aging agent is preferably anti-aging agent RD, and the chemical composition of anti-aging agent RD is the polymerization of 2,2,4-trimethylammonium-1,2-dihyaroquinoline, has another name called antioxidant RD, and it is very good with the consistency of rubber, and the aging protection effect caused hot and oxygen is better.
Promotor and vulcanization accelerator, it can promote the material of sulfuration.Can curing time be shortened, reduce curing temperature, reduce the physical and mechanical properties of vulcanizing agent consumption and raising rubber.Promotor is preferably accelerant CZ.Accelerant CZ chemical name is N-cyclohexyl-2-benzothiazole sulfonamide, and it is the aftereffect promotor that a kind of height is active, and scorching quality is excellent, process safety, and curing time is short.
Be activator with zinc oxide, make vulcanization activator, it can promote the sulfuration of rubber, activation and reinforcement, anti-aging effect, can strengthen sulfidation, improve rubber item resistance to tearing, wear resistance.The abundant diffusion of the favourable carbon black of stearic acid and zinc oxide; It also can react with zinc oxide can promote that it is active, or main vulcanization accelerator additive, can play the effect of the second promotor.Except this, also play certain lubrication.Sulphur is linking agent the most, even if the reactant of linear polymer chain generation crosslinked action.Sulphur is preferably sulphur S-80.Sulphur S-80 molecular formula is S
8, have another name called α type sulphur.Zinc oxide, stearic acid, sulphur one react and generate the presoma of vulcanization reaction, i.e. the complex compound of zinc thiolate, and this three constitutes a cure activation system.
Carbon black, as filler, is preferably carbon black N-550.
The present invention provides a kind of method preparing above-mentioned elastomeric material on the other hand, and the elastomeric material that the method obtains has higher ozone resistance and processing characteristics.
Prepare the method as above-mentioned elastomeric material, comprise the following steps:
(1) natural rubber of 70 ~ 120 mass parts is inserted in Banbury mixer plasticate, obtain plastifying rubber;
(2) described plasticizing rubber is carried out banburying together with the zinc oxide of the anti-aging agent of 4 ~ 8 mass parts, 4 ~ 6 mass parts, 1 ~ 2 mass parts stearic acid, 5 ~ 30 mass parts ethylene-propylene-diene monomer rubber powders, 50 ~ 70 mass parts of carbon black, 20 ~ 30 mass parts tenderizers, 1 ~ 2 mass parts sulphur and 4 ~ 8 mass parts promotor in Banbury mixer and obtain banburying glue;
(3) described banburying glue is inserted in mill carry out out refining and obtain out refining glue;
(4) open refining glue sulfuration obtain elastomeric material by described.
In above-mentioned preparation method, the time of plasticating is 1 ~ 2min.First in plasticizing rubber, add anti-aging agent, zinc oxide and stearic acid in internal mixing pass, then add carbon black and ethylene-propylene-diene monomer rubber powder, then add tenderizer, finally add sulphur and promotor.Plasticizing rubber first carries out banburying with the little medicine of one be made up of anti-aging agent, zinc oxide and stearic acid, when after banburying certain hour, carbon black and ethylene-propylene-diene monomer rubber powder is fed intake in the lump, continues banburying, eats up fed intake by tenderizer when powder more than 80%.When temperature rises to 90 DEG C, another the little medicine be made up of sulphur and promotor is fed intake.Carbon black and ethylene-propylene-diene monomer rubber powder feed intake in the lump, can simplify the operation fed intake.
Wherein, the dump temperature of described banburying is preferably 110 DEG C.
Wherein, describedly open refining and be specially: first the roll spacing of mill is adjusted to 6 ~ 10mm, the sizing material left and right cutter treating out refining turns over glue twice, then described roll spacing is adjusted to below 1mm, this sizing material thin-pass, triangle bag are turned refining 4 times, then described roll spacing is adjusted to 6 ~ 10mm, turns over glue twice to this sizing material left and right cutter, last water-cooled is air-dry obtains out refining glue.
Wherein, the temperature of described sulfuration is 170 ~ 180 DEG C, is preferably 175 DEG C.Curing time is 280 ~ 320s, is preferably 300s.
Ethylene-propylene-diene monomer rubber powder is added in natural rubber by the present invention, and terpolymer EP rubber contains higher Third monomer, improves the ozone resistance of natural rubber.Ethylene-propylene-diene monomer rubber powder and natural rubber have good also use property, improve the resist processing of elastomeric material obtained thus, reduce cost.
Embodiment
The present invention is described in further detail in conjunction with the embodiments respectively below.
Involved each industrial chemicals and to test the source of equipment used to embodiment, comparative example as follows in below implementing:
Natural rubber is produced by main office of Hainan Farm group; Carbon black N550 is produced by Shanghai Cabot; Zinc oxide is produced by capital, Shanghai; Ethylene-propylene-diene monomer rubber powder is produced by Jiangsu Mei Ya plastic cement Science and Technology Ltd.; The place of production of accelerant CZ is Huangyan, Zhejiang; Other industrial chemicals is commercially available.
Mill is produced by Wuxi Xi Wei rubber and plastic company limited; Vulcanizing press is produced by huge rock oil pressure unit Anhui, Taiwan company limited; Puller system trier is the model that Taiwan High Speed Rail Testing Instruments company limited produces is TCS-2000; The model that shore hardness counts the production of Shanghai six water chestnut instrument plant is LX-A; The model being Shanghai De Jie plant and instrument company limited without rotor vulkameter is MDR-2000; Ozone resistance test machine for the model that Taiwan High Speed Rail Testing Instruments company limited produces be OZ-0200AH.
Embodiment 1: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 100 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 6 mass parts, the zinc oxide of 5 mass parts, 1.5 mass parts stearic acid start banburying, fed intake 25 mass parts ethylene-propylene-diene monomer rubber powders, 60 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 25 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 1.5 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber powder left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 170 DEG C, curing time is 320s, obtains elastomeric material.
Embodiment 2: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 100 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 6 mass parts, the zinc oxide of 4 mass parts, 1.5 mass parts stearic acid start banburying, fed intake 25 mass parts ethylene-propylene-diene monomer rubber powders, 60 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 25 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 1 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber powder left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 175 DEG C, curing time is 300s, obtains elastomeric material.
Embodiment 3: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 100 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 6 mass parts, the zinc oxide of 6 mass parts, 1.5 mass parts stearic acid start banburying, fed intake 25 mass parts ethylene-propylene-diene monomer rubber powders, 70 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 30 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 1 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 180 DEG C, curing time is 280s, obtains elastomeric material.
Embodiment 4: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 100 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 4 mass parts, the zinc oxide of 5 mass parts, 1.5 mass parts stearic acid start banburying, fed intake 25 mass parts ethylene-propylene-diene monomer rubber powders, 50 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 30 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 1.5 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 180 DEG C, curing time is 280s, obtains elastomeric material.
Embodiment 5: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 100 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 8 mass parts, the zinc oxide of 5 mass parts, 1.5 mass parts stearic acid start banburying, fed intake 25 mass parts ethylene-propylene-diene monomer rubber powders, 50 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 20 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 1 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 175 DEG C, curing time is 300s, obtains elastomeric material.
Embodiment 6: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 100 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 6 mass parts, the zinc oxide of 5 mass parts, 1 mass parts stearic acid start banburying, fed intake 25 mass parts ethylene-propylene-diene monomer rubber powders, 70 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 20 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 1.5 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 180 DEG C, curing time is 280s, obtains elastomeric material.
Embodiment 7: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 100 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 6 mass parts, the zinc oxide of 5 mass parts, 3 mass parts stearic acid start banburying, fed intake 25 mass parts ethylene-propylene-diene monomer rubber powders, 50 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 30 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 2 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 180 DEG C, curing time is 280s, obtains elastomeric material.
Embodiment 8: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 100 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 5 mass parts, the zinc oxide of 4.5 mass parts, 1.2 mass parts stearic acid start banburying, fed intake 25 mass parts ethylene-propylene-diene monomer rubber powders, 60 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 20 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 2 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 180 DEG C, curing time is 280s, obtains elastomeric material.
Embodiment 9: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 100 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 7 mass parts, the zinc oxide of 5.5 mass parts, 1.7 mass parts stearic acid start banburying, fed intake 25 mass parts ethylene-propylene-diene monomer rubber powders, 70 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 20 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 2 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 180 DEG C, curing time is 280s, obtains elastomeric material.
Embodiment 10: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 105 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 6 mass parts, the zinc oxide of 5 mass parts, 1.5 mass parts stearic acid start banburying, fed intake 10 mass parts ethylene-propylene-diene monomer rubber powders, 60 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 25 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 1.5 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 180 DEG C, curing time is 280s, obtains elastomeric material.
Embodiment 11: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 110 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 6 mass parts, the zinc oxide of 5 mass parts, 1.5 mass parts stearic acid start banburying, fed intake 15 mass parts ethylene-propylene-diene monomer rubber powders, 60 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 25 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 1.5 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 180 DEG C, curing time is 280s, obtains elastomeric material.
Embodiment 12: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 115 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 6 mass parts, the zinc oxide of 5 mass parts, 1.5 mass parts stearic acid start banburying, fed intake 20 mass parts ethylene-propylene-diene monomer rubber powders, 60 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 25 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 1.5 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 180 DEG C, curing time is 280s, obtains elastomeric material.
Embodiment 13: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 120 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 6 mass parts, the zinc oxide of 5 mass parts, 1.5 mass parts stearic acid start banburying, fed intake 30 mass parts ethylene-propylene-diene monomer rubber powders, 60 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 25 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 1.5 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 180 DEG C, curing time is 280s, obtains elastomeric material.
Embodiment 14: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 95 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 6 mass parts, the zinc oxide of 5 mass parts, 1.5 mass parts stearic acid start banburying, fed intake 5 mass parts ethylene-propylene-diene monomer rubber powders, 60 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 25 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 1.5 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 180 DEG C, curing time is 280s, obtains elastomeric material.
Embodiment 15: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 90 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 6 mass parts, the zinc oxide of 5 mass parts, 1.5 mass parts stearic acid start banburying, fed intake 10 mass parts ethylene-propylene-diene monomer rubber powders, 60 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 25 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 1.5 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 180 DEG C, curing time is 280s, obtains elastomeric material.
Embodiment 16: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 85 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 6 mass parts, the zinc oxide of 5 mass parts, 1.5 mass parts stearic acid start banburying, fed intake 15 mass parts ethylene-propylene-diene monomer rubber powders, 60 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 25 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 1.5 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 180 DEG C, curing time is 280s, obtains elastomeric material.
Embodiment 17: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 80 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 6 mass parts, the zinc oxide of 5 mass parts, 1.5 mass parts stearic acid start banburying, fed intake 20 mass parts ethylene-propylene-diene monomer rubber powders, 60 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 25 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 1.5 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 180 DEG C, curing time is 280s, obtains elastomeric material.
Embodiment 18: insert in Banbury mixer the 1 ~ 2min that plasticates at 60 DEG C by disposable for the natural rubber of 70 mass parts, obtains plastifying rubber.In this plasticizing rubber, add the anti-aging agent RD of 6 mass parts, the zinc oxide of 5 mass parts, 1.5 mass parts stearic acid start banburying, fed intake 30 mass parts ethylene-propylene-diene monomer rubber powders, 60 mass parts of carbon black N550 after the some time continuation banburying in the lump.When powder more than 80% is eaten up, feed intake the naphthenic oil of 25 mass parts continuation banburying.Promote when temperature rises to 90 DEG C and add the supreme position of gland, by 1.5 mass parts sulphur S-80 and 4 mass parts accelerant CZs after cleaning, pressure adds gland and continues banburying.When temperature rises to 110 DEG C, binder removal obtains banburying glue.Banburying glue is inserted in mill, adjusts mill roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Then by roll spacing to below 1mm, rubber unvulcanizate thin-pass, triangle bag are turned refining 4 times; Then, adjust roll spacing to 6 ~ 10mm, glue is turned over twice to rubber unvulcanizate left and right cutter; Finally, slice is added air-dry after carrying out water-cooled, obtains out refining glue.To open refining glue and insert mould at 180 DEG C, curing time is 280s, obtains elastomeric material.
Comparative example: except not containing ethylene-propylene-diene monomer rubber powder in feed composition, other are all identical with embodiment 1.
The shore hardness of the elastomeric material of embodiment 1 ~ 18 and comparative example, tensile strength, tensile yield and resistance to ozone-induced cracking time test, and test condition is: ozone concn is 50pphm, and humidity is 50%, test piece preliminary draft 25%, and temperature is 40 DEG C.Above-mentioned test result is as following table:
As can be seen from the above table, along with ethylene-propylene rubber(EPR) rubber powder and the increase of consumption, the rubber ozone resistance time improves constantly.
Elastomeric material Cost comparisons of the present invention, ethylene-propylene rubber(EPR) rubber powder is that ethylene-propylene rubber(EPR) goods or overlap are produced after fragmentation, grinding and filtration, can give up as treasured in limit, ethylene-propylene rubber(EPR) rubber powder price is 5.6 yuan/kg, and the price of terpolymer EP rubber is 25 yuan/kg, by this formulation optimization, 2 yuan/kg rubber unvulcanizate cost can be reduced.Natural rubber and ethylene-propylene rubber(EPR) are also by the ozone resistance can improving natural rubber, and performance of technical process is unstable, and product property is unstable, and price is high; Adopt second third rubber powder to replace ethylene-propylene rubber(EPR), not only can utilize renewable resource, and rubber processing is simple, stable performance, ozone resistance is high, and cost is low.
It should be noted that and understand, when not departing from the spirit and scope of accompanying claim the present invention for required protection, various amendment and improvement can be made to the present invention of foregoing detailed description.Therefore, the scope of claimed technical scheme is not by the restriction of given any specific exemplary teachings.
Applicant states, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, namely do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (7)
1. workability, an ozone proof elastomeric material, is characterized in that, comprises following feed composition according to mass parts:
Wherein, described tenderizer is naphthenic oil, and described anti-aging agent is anti-aging agent RD, and promotor is accelerant CZ, and described carbon black is carbon black N-550, and described sulphur is sulphur S-80.
2. elastomeric material according to claim 1, is characterized in that, comprises following feed composition according to mass parts:
3. prepare a method for elastomeric material as claimed in claim 1, it is characterized in that, comprise the following steps:
(1) natural rubber of 70 ~ 120 mass parts is inserted in Banbury mixer plasticate, obtain rubber of plasticating;
(2) described rubber of plasticating is carried out banburying together with the zinc oxide of the anti-aging agent of 4 ~ 8 mass parts, 4 ~ 6 mass parts, 1 ~ 2 mass parts stearic acid, 5 ~ 30 mass parts ethylene-propylene-diene monomer rubber powders, 50 ~ 70 mass parts of carbon black, 20 ~ 30 mass parts tenderizers, 1 ~ 2 mass parts sulphur and 4 ~ 8 mass parts promotor in Banbury mixer and obtain banburying glue;
(3) described banburying glue is inserted in mill carry out out refining and obtain out refining glue;
(4) open refining glue sulfuration obtain elastomeric material by described.
4. method according to claim 3, is characterized in that, first in rubber of plasticating, adds anti-aging agent, zinc oxide and stearic acid, then add carbon black and ethylene-propylene-diene monomer rubber powder, then add tenderizer, finally add sulphur and promotor in described internal mixing pass.
5. method according to claim 3, is characterized in that, the dump temperature of described banburying is 110 DEG C.
6. method according to claim 3, it is characterized in that, describedly open refining and be specially: first the roll spacing of mill is adjusted to 6 ~ 10mm, the sizing material left and right cutter treating out refining turns over glue twice, then described roll spacing is adjusted to below 1mm, this sizing material thin-pass, triangle bag is turned refining 4 times, then described roll spacing is adjusted to 6 ~ 10mm, glue twice is turned over to this sizing material left and right cutter, air-dryly after last water-cooled obtains out refining glue.
7. method according to claim 3, is characterized in that, the temperature of described sulfuration is 170 ~ 180 DEG C, and curing time is 280 ~ 320s.
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| CN111978604B (en) * | 2020-08-26 | 2022-10-14 | 江苏徐工工程机械研究院有限公司 | Anti-cracking rubber and crawler belt |
| CN115058068A (en) * | 2022-06-23 | 2022-09-16 | 亚新科噪声与振动技术（安徽）有限公司 | Wax-free, pollution-free and ozone-resistant natural rubber material and preparation method thereof |
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