CN102504353A - 60-degree natural rubber and production process thereof - Google Patents

Abstract

The invention discloses a 60-degree natural rubber and a production process of the 60-degree natural rubber. The raw materials of the 60-degree natural rubber comprise 48%-65% of raw natural rubber, 1%-2.5% of vulcanizator, 5%-21% of high wear-resistant furnace black, 8%-28% of spraying carbon black, 5.5%-17% of active agent, 0.1%-0.6% of accelerator, 0.55%-3.2% of anti-aging agent and 0.5%-3% of plasticizer, and the natural rubber is produced by processes of plasifying and mixing. The 60-degree natural rubber has the advantages of good ageing resistance, good elongation at rupture, excellent wear resistance, good rebound value, good load compression amount and natural frequency; meanwhile, the rubber is low in production cost.

Description

A kind of 60 degree tree elastomer and production technique thereof

Technical field

The present invention relates to a kind of tree elastomer and production technique thereof, concrete, the present invention relates to a kind of 60 degree tree elastomer and production technique thereof.

Background technology

Tree elastomer be a kind of be the natural high moleculer eompound of staple with the TR 301, molecular formula is (C ₅H ₈) n, in its composition 91%～94%, rubber hydrocarbon (TR 301), all the other are nonrubber materials such as protein, lipid acid, ash content, carbohydrate.Tree elastomer is to use the widest conventional rubber.

Tree elastomer has higher elasticity at normal temperatures, is with plasticity slightly, has good mechanical intensity, and hysteresis loss is little, and living heat is low when repeatedly being out of shape, so its flexible resistance is also fine, and because be non-polar rubber, so electrical insulation capability is good.

Because unsaturated double-bond is arranged; So tree elastomer is the stronger material of a kind of chemical reaction ability, light, heat, ozone, radiation, subdue distortion and metals such as copper, manganese and can both promote the aging of rubber, not ageing-resistant is the deadly defect of tree elastomer; But; Added the tree elastomer of anti-aging agent, tanned by the sun in the sun sometimes and still do not see much variations in two months, in the warehouse, stored after 3 years and still can use as usual.

Tree elastomer has alkaline resistance properties preferably, but not anti-dense strong acid.Because tree elastomer is non-polar rubber, can only more anti-polar solvents, swelling then in non-polar solvent; Therefore; Its oil-proofness and solvent resistance are very poor, and generally speaking, hydrocarbon, halohydrocarbon, dithiocarbonic anhydride, ether, higher ketone and higher fatty acid all have solvency action to tree elastomer; The influence of degree but its solubleness is then plasticated, lower ketones, lower member ester and alcohols then are non-solvents to tree elastomer.

Because the shortcoming that tree elastomer exists has a strong impact on its use, therefore, tree elastomer all need be processed on the rubber basis, makes it more meet actual use.The processing of rubber is divided into plasticates with mixing.Plastication is: reduce the molecular weight of rubber, increase plasticity, improve workability.In order to improve the cost of rubber item use properties, improvement use characteristics, reduction product, must in rubber, add various Synergist S-421 95s.Various Synergist S-421 95s are joined in the rubber mix, the technological process of processing rubber unvulcanizate is called mixing.The Synergist S-421 95 that needs in the mixing process to add has: vulcanizing agent, strengthening agent, promoting agent, promotor, anti-aging agent, softening agent etc.

Rubber shock absorber is one of important use of rubber, is widely used in the precision equipment.The major advantage of rubber shock absorber is: 1, can process the goods of different shape and different hardness, have good elasticity and enough intensity; 2, can make very low that the natural frequency of vibrating isolation system does, and have higher damping; 3, no matter drawing, pressing, shearing and reversing under the stressing conditions, be out of shape all bigger.

Rubber is a kind of nonlinear resilient material, almost is incompressible.Only hour, just can be approx as linear body in distortion.The Young's modulus and the hardness of rubber are closely related, and receive the influence of temperature and shape again.The static modulus of elasticity E of rubber under the long-duration load effect _SIncrease with rubber hardness increases, and rubber hardness is between shore hardness 30～70HS, and the elastic modulus change scope is 0≤E _S＜4.Dynamic modulus E _dObtain through experiment, rubber hardness is between shore hardness 30～70HS, and the dynamic elastic modulus variation range is 0＜E _d≤10.The average of relatives value of the dynamic elastic modulus of rubber and static modulus of elasticity

n _dBe called performance coeffcient, n _dIt is more little good more to be worth.

Vibration isolator height and deflection relation are:

Δ＝(0.15～0.20)H

H＝(5～6.7)Δ

In above-mentioned scope, elastic modulus change is 5%.

The hardness of rubber is the significant parameter of decision rubber performance, considers from comprehensive angle, and the rubber that in vibration isolation, uses, we generally adopt shore hardness 40 degree～90 degree.

According to by total static load of vibration isolation object and used vibration isolator quantity, obtain the static load W (N) that each vibration isolator carries.Natural frequency f according to the vibration isolation system requirement ₀(f ₀Confirm by vibration isolation efficiency), obtain the vertical dynamic stiffness k that vibration isolator should have _Zd(N/cm)

$k_{\mathrm{zd}}=\frac{W{\left(2\mathrm{\π}{f}_0\right)}^2}{g}$

K in the formula _ZdThe vertical dynamic stiffness of-single vibration isolator (N/cm);

The single vibration isolator static load of W-(N);

G-universal gravity constant is got g=9.8cm/s ²

According to the relation and the rubber hardness of dynamic and static modulus and rubber hardness, confirm the quiet rigidity k of vibration isolator _ZsGenerally speaking, can be calculated as follows

$k_{\mathrm{zs}}=\frac{k_{\mathrm{zd}}}{n_d}=\frac{k_{\mathrm{zd}}}{2.5}$

The horizontal rigidity of vibration isolator does

$k_x=\frac{\mathrm{GS}}{H}$

The dynamic shear modulus N/cm of G-in the formula ²,

S-vibration isolator Area of bearing;

H-vibration isolator height.

Confirm the vertical quiet Δ that becomes of vibration isolator geometrical dimension

$\mathrm{\Δ}=\frac{W}{k_{\mathrm{zs}}}$

The supporting area S of vibration isolator

$S=\frac{{\mathrm{Hk}}_{\mathrm{zs}}}{E_S{\mathrm{\ξ}}_t{\mathrm{\ξ}}_s}$

CN 1730526 A disclose a kind of vulcanite that increases, and main raw material proportioning by weight is: natural gum 90-96 part; AERZ-587 increases hard reinforced resin 4-10 part; 2.8 parts of vulcanizing agents; 12.8 parts of promoting agents; 50 parts of strengthening agents; 2.5 parts in anti-aging agent; 0.8 part of accelerant CZ; 10.4 parts of tenderizers.The key step of production technique is following: 1) plasticating technology: a. drops into rubber mixing machine with natural gum and plasticated 10-15 minute; B. add AERZ-587 and increase hard reinforced resin; C. closing refining glue deposits and treated mixing usefulness in 8-24 hour; 2) calendering process: a. rubber mixing machine; B. drop into and close refining glue and plasticate and left behind in 5-8 minute; C. it is reinforced to press following order: strengthening agent-promoting agent-tenderizer-anti-aging agent-promotor-vulcanizing agent.

CN 1388161 A disclose a kind of rubber item-damping rubber product that is used for conditioner or other similar applications, consist of by kilogram weight: butyl rubber 3-20, terpine resin 0.08-4; WHITE CARBON BLACK 0.42-2.5, spray carbon black 0.5-5, high wear-resistant carbon black 0.5-7; Polyisobutene 6.5-25, dioctyl ester 0.5-1.8, anti-aging agent 0.1-0.4; Light beggar or ground barium sulfate or lead powder or iron powder 1.8-50, potter's clay or ground barium sulfate or lead powder or iron powder 0.2-10.

There is certain defective in the tree elastomer for preparing in the prior art at aspects such as resistance to deterioration, tensile yield, rebound value, lower temperature resistance, carrying draught, natural frequencies, and the products production cost of a small amount of each item better performances is higher.

Summary of the invention

To the deficiency of prior art, one of the object of the invention is to provide a kind of 60 degree tree elastomers.Said 60 degree tree elastomers have good resistance to deterioration, tensile yield, rebound value, lower temperature resistance, carrying draught, natural frequency, have lower production cost simultaneously.

Said 60 degree tree elastomers comprise according to mass percent:

As optimal technical scheme, said 60 degree tree elastomers, only form according to mass percent by following substances:

The said components sum is 100%.

Preferred said 60 degree tree elastomers, form by following substances according to mass percent:

The said components sum is 100%.

Said vulcanizing agent is preferably sulphur, organic sulfide, superoxide, MOX, benzoquinones, amine, a kind of or its mixture of further preferred sulphur, organic sulfide, preferred especially sulphur;

Said promoting agent preferably is made up of mineral-type promoting agent and organic type of promoting agent; Further preferably form by zinc oxide and Triple Pressed Stearic Acid; Especially preferably be made up of 3%～14% zinc oxide and 0.2%～2.5% Triple Pressed Stearic Acid, its quality percentage composition is the percentage composition in said raw material;

Said promotor is preferably thiazole accelerator, preferred especially 2-benzothiazolyl mercaptan;

Said anti-aging agent preferably is made up of N-PBNA and N-cyclohexyl-N '-diphenyl-para-phenylene diamine; Further preferably be made up of 0.3%～2.5% N-PBNA and N-cyclohexyl-N '-diphenyl-para-phenylene diamine of 0.05%～1.2%, its quality percentage composition is the percentage composition in said raw material;

Said softening agent is preferably butter.

Preferred said 60 degree caouttchoucs comprise according to mass percent:

Rubber raw materials: tree elastomer 56.1%

Vulcanizing agent: sulphur 1.68%

Strengthening agent: high abrasion furnace black(HAF) 12.2%, spray carbon black 16.8%

Promoting agent: zinc oxide 8.41%, Triple Pressed Stearic Acid 1.12%

Promotor: 2-benzothiazolyl mercaptan 0.34%

Anti-aging agent: N-PBNA 1.12%, N-cyclohexyl-N '-diphenyl-para-phenylene diamine 0.56%

Softening agent: butter 1.67%;

Sulphur according to the invention can be known product for SULPHUR POWDER, precipitated sulfur, colloid sulphur, insoluble sulfur etc., can commercially availablely obtain or obtain according to the preparation method of prior art/new technology.

High abrasion furnace black(HAF) according to the invention is the standard construction high abrasion furnace black(HAF) again.The black flour.26～35 microns of median sizes.75～105 meters of specific surface areas ²/ gram.0.9～1.2 milliliter/gram of oil-absorption(number).These article are applicable to tree elastomer and multiple synthetical glue as the strengthening agent and the weighting agent of rubber.The high abrasion furnace black(HAF) processing characteristics is good, is prone to be scattered in the rubber, and sizing material extrudes smooth surface.Tensile strength and tensile yield are higher.These article scope of application is wider, is usually used in requirement wear resisting property preferred article, is known product, can commercially availablely obtain or obtain according to the preparation method of prior art/new technology.

Spray carbon black according to the invention is to be raw material with oil, oil plant is sprayed into to nebulize in the stove burn and get.The spray carbon black particle is thick also can fill in sizing material in a large number, and processing characteristics is good.Big, the living heat of cross-linked rubber elasticity is low, distortion is little, low-temperature performance good, stress at definite elongation is higher; This kind carbon black is mainly used in the high-pressure rubber pipe of making oil resistant, high-low temperature resistant and sealing member etc.; Be known product, can commercially availablely obtain or obtain according to the preparation method of prior art/new technology.

The promoting agent that zinc oxide according to the invention and Triple Pressed Stearic Acid are formed, promoting agent the most frequently used when being the vulcanization system that employing sulphur-promotor is formed makes up.Wherein, said zinc oxide can be the special-purpose zinc oxide of rubber; Said Triple Pressed Stearic Acid, i.e. octadecanoic acid, molecular formula C ₁₈H ₃₆O ₂Said zinc oxide and Triple Pressed Stearic Acid are the existing procucts of affiliated technical field, can commercially availablely obtain or obtain according to the preparation method of prior art/new technology.

2-benzothiazolyl mercaptan according to the invention, another name: captax is pale yellow powder (particle); Little smelly, bitter taste is arranged, nontoxic; Proportion 1.42-1.52, fusing point are soluble in the dilute solution of ETHYLE ACETATE, acetone, sodium hydroxide and yellow soda ash more than 171 ℃; Be dissolved in ethanol, be not soluble in benzene, water insoluble and gasoline.Shelf-stable.When being dust, Lower Explosive Limit is 21g/m ³Being mainly used in IR, NR, SBR, NBR, HR and EPOM system, is a kind of main acid cure agent at present, has MC speed, with alkaline vulcanizing agents such as other vulcanizing agent such as WIlLLING DM and WIlLLING TMTD and with reaching higher activity.Its curing temperature is low, in rubber, is prone to disperse, do not pollute, and is mainly used in and makes tire, adhesive tape, rubber overshoes and other industrial rubber articles.Its chemical structural formula is:

Said 2-benzothiazolyl mercaptan is the existing procucts of affiliated technical field, can commercially availablely obtain or obtain according to the preparation method of prior art/new technology.

N-PBNA according to the invention, the another name antioxidant D is light grey powder, effective to heat, oxygen, fatigue aging, its chemical structural formula is:

Said N-PBNA is the existing procucts of affiliated technical field, can commercially availablely obtain or obtain according to the preparation method of prior art/new technology.

N-cyclohexyl-N ' according to the invention-diphenyl-para-phenylene diamine, the another name antioxidant 4010 is bright grey powder; Ozone and fatigue aging there is special efficacy; Also very effective to wearing out of oxygen, heat, light and metals ion, be called as " all-round anti-aging agent ", its chemical structural formula is:

Said N-cyclohexyl-N '-diphenyl-para-phenylene diamine is the existing procucts of affiliated technical field, can commercially availablely obtain or obtain according to the preparation method of prior art/new technology.

Butter according to the invention belongs to tenderizer again, and carbon black is evenly distributed fast, can improve flexibility, heat distortion property, the snappiness of rubber; Improve the rubber glossiness; Plasticizing efficiency is high, and intermiscibility is good, is difficult for oxidation and volatilization; Be the existing procucts of affiliated technical field, can commercially availablely obtain or obtain according to the preparation method of prior art/new technology.

60 degree tree elastomers of the present invention; Can add other additives as required; For example scorch retarder, pigment etc., it all is known technologies of affiliated technical field, the person of ordinary skill in the field is according to its knowledge of grasping; Can freely select suitable additive as required, the present invention details no longer at this point.

Another object of the present invention is to provide the production technique of 60 degree tree elastomers.

The production technique of said 60 degree tree elastomers may further comprise the steps:

(1) drying glue: the caouttchouc of the regulation of will filling a prescription places under 30～70 ℃ drying glue at least 3 hours;

(2) broken glue: the caouttchouc after the drying glue breaks glue immediately.Roll spacing is 0.3mm～0.9mm when breaking glue;

(3) plasticate for the first time: caouttchouc is divided at least 3 equal portions, and every part of weight is no more than 20kg.Roll spacing is 0.3mm～0.9mm, requires clot and turns 90 ° and plasticate for following time.Cross roller 10～18 times continuously;

(4) park at least 3 hours after, carry out plasticating the second time.Plasticating for the second time still is that roll spacing is adjusted into 0.3mm～0.9mm, and clot is also turned 90 ° and plasticated continuous mistake roller 10～18 times following time.After parking at least 3 hours, the calendering process of being allowed for access;

(5) mixing: the virgin rubber that will plasticate is put into mill, makes its bag roller, and behind complete evenly bag roller, promoting agent and anti-aging agent mixing with the prescription regulation divide 2 addings at least.After roller at least 2 times; It is uniformly dispersed; At least divide the high abrasion furnace black(HAF), spray carbon black and the softening agent that add the prescription regulation for 2 times in turn afterwards, the mixing even back of high abrasion furnace black(HAF), spray carbon black and softening agent adds the promotor of prescription regulation, adds the vulcanizing agent of prescription regulation at last.

As preferred version, in the step (1), caouttchouc placed carry out drying glue in the baking oven, preferred 40～60 ℃ of drying glue temperature; Preferably at least 4 hours drying glue time;

In the step (2), roll spacing is preferably 0.4mm～0.8mm when breaking glue, is preferably 0.5mm～0.7mm especially.

In the step (3), preferably caouttchouc is divided into 3 equal portions.

In the step (3), behind the preferred five equilibrium, every part of caouttchouc weight is no more than 18kg, further preferably is no more than 16kg, especially preferably is no more than 15kg.

In the step (3), preferred roll spacing is 0.4mm～0.8mm, and preferred especially roll spacing is 0.5mm～0.7mm.

In the step (3), preferred continuous roller 11～17 times of crossing, preferred especially continuous roller 12～15 times of crossing.

In the step (4), before carrying out plasticating the second time, preferably parked at least 4 hours.

In the step (4), the preferred roll spacing of plasticating for the second time is 0.4mm～0.8mm, and preferred especially roll spacing is 0.5mm～0.7mm.

In the step (4), preferred continuous roller 11～17 times of crossing, preferred especially continuous roller 12～15 times of crossing.

In the step (4), after plasticating for the second time, preferably park at least 4 hours after, further preferably be no more than 12 days, especially preferably be no more than 10 days, get into calendering process then.Preferably that the storage period is long rubber is plasticated again.

In the step (5), mixed promoting agent and anti-aging agent preferably divide 3 addings, preferred especially 3 times at least.

In the step (5), preferred roller excessively 2～4 times, preferred especially roller excessively 2～3 times.

In the step (5), high abrasion furnace black(HAF), spray carbon black and softening agent preferably divide 3 addings, preferred especially 3 times at least.

Preferred said 60 degree tree elastomers are used to make rubber shock absorber.

The prepared 60 degree tree elastomers of the present invention adopt caouttchouc to make raw material, therefore have higher intensity, extensibility; Through the selection of adjustment sooty add-on and carbon black types, change rubber hardness and elasticity, so that its rubber that has than prior art for preparing has better carrying draught and natural frequency; The tree elastomer of the preparation of the present invention simultaneously all is significantly increased at aspects such as resistance to deterioration, tensile yield, rebound value, lower temperature resistances, and surface cleaning, and pliability is better, and has lower production cost, has significant advantage.

Description of drawings

Fig. 1 is the quiet rigidity test result of Comparative Examples one U.S. U Company products RA1500EMB

Fig. 2 is the quiet rigidity test result of the tree elastomer of Comparative Examples two preparations

Fig. 3 is the quiet rigidity test result of the tree elastomer of embodiment one preparation

Embodiment

For ease of understanding the present invention, it is following that the present invention enumerates embodiment.Those skilled in the art should understand, and said embodiment helps to understand the present invention, should not be regarded as concrete restriction of the present invention.

Comparative Examples one

U.S. U Company products RA1500EMB to representing prior art carries out quiet rigidity test.

Fig. 1 is the quiet rigidity test result of Comparative Examples one U.S. U Company products RA1500EMB.

This kind rubber each item performance is all than more excellent, but production cost is higher, has restricted it and has promoted the use of.

Comparative Examples two

Spend tree elastomers according to following steps preparation 60:

(1) takes by weighing tree elastomer 51g, sulphur 7.8g, high abrasion furnace black(HAF) 23.2g, zinc oxide 11.24g, Triple Pressed Stearic Acid 2.2g, 2-benzothiazolyl mercaptan 0.96g, N-PBNA 1.2g, N-cyclohexyl-N '-diphenyl-para-phenylene diamine 0.6g, butter 1.8g.

(2) production technique of announcing according to the present invention makes 60 degree tree elastomers.

Fig. 2 is the quiet rigidity test result of the tree elastomer of Comparative Examples two preparations.

The quiet rigidity test result of RA1500EMB in this test-results and the Comparative Examples one is compared and can know; Both performances are very approaching; But; The tree elastomer load metamorphism amount of this Comparative Examples preparation is little, explains that vulcanized rubber is hard partially, is that strengthening agent is with spray carbon black instead of part high wear-resistant carbon black so revise the scheme of rubber.Just with the big little carbon black of carbon black instead of part particle diameter of particle diameter, the rubber of same rigidity, the particle diameter of weighting agent is big, and it is big that rubber carries draught.

Embodiment one

Prepare 60 degree tree elastomers of the present invention according to following steps:

(1) drying glue: the 56.1g caouttchouc is placed in the baking oven under 60 ℃ drying glue 4 hours;

(2) broken glue: the caouttchouc after the drying glue breaks glue immediately.Roll spacing is 0.5mm when breaking glue;

(3) plasticate for the first time: caouttchouc is divided into 3 equal portions, and every part of weight is 18.7kg.Roll spacing is 0.5mm, requires clot and turns 90 ° and plasticate for following time.Cross roller 12 times continuously;

(4) park 4 hours after, carry out plasticating the second time.The roll spacing of plasticating for the second time is adjusted into 0.5mm, and clot is also turned 90 ° and plasticated continuous mistake roller 12 times following time.After parking 4 hours, get into calendering process;

(5) mixing: the virgin rubber that will plasticate is put into mill, makes its bag roller, after fully evenly wrapping roller, 8.41g zinc oxide, 1.12g Triple Pressed Stearic Acid, 1.12g N-PBNA, 0.56g N-cyclohexyl-N '-diphenyl-para-phenylene diamine is mixed, and divides 3 addings.After roller 3 times; It is uniformly dispersed, adds the 12.2g high abrasion furnace black(HAF) in turn 3 times afterwards, 16.8g spray carbon black and 1.67g butter; The mixing even back of high abrasion furnace black(HAF), spray carbon black and butter adds 0.34g 2-benzothiazolyl mercaptan, adds 1.68g sulphur at last.

Fig. 3 is the quiet rigidity test result of the tree elastomer of embodiment one preparation.

The quiet rigidity test result of RA1500EMB in this test-results and the Comparative Examples one is compared and can know, the big 2.0～2.5mm of present embodiment preparing product draught, the little about 2～3Hz of natural frequency.Promptly the vibration isolation efficiency of present embodiment product is superior to Comparative Examples one product under identical load.

Embodiment two

Prepare 60 degree tree elastomers of the present invention according to following steps:

(1) drying glue: the 63.2g caouttchouc is placed under 70 ℃ drying glue 3 hours;

(2) broken glue: the caouttchouc after the drying glue breaks glue immediately.Roll spacing is 0.3mm when breaking glue;

(3) plasticate for the first time: caouttchouc is divided into 4 equal portions, and every part of weight is about 15.8kg.Roll spacing is 0.3mm, requires clot and turns 90 ° and plasticate for following time.Cross roller 18 times continuously;

(4) park 5 hours after, carry out plasticating the second time.The roll spacing of plasticating for the second time is adjusted into 0.3mm, and clot is also turned 90 ° and plasticated continuous mistake roller 18 times following time.After parking 5 hours, get into calendering process;

(5) mixing: the virgin rubber that will plasticate is put into mill, makes its bag roller, and after fully evenly wrapping roller, with 5g zinc oxide, 0.5g Triple Pressed Stearic Acid, 2g N-PBNA, 1.2g N-cyclohexyl-N '-diphenyl-para-phenylene diamine mix, and divide 5 addings.After roller 4 times, it is uniformly dispersed, divide 5 times afterwards and add the 10g high abrasion furnace black(HAF) in turn, 12g spray carbon black and 3g butter, the mixing even back of high abrasion furnace black(HAF), spray carbon black and butter adds 0.6g 2-benzothiazolyl mercaptan, adds 2.5g sulphur at last.

Embodiment three

Prepare 60 degree tree elastomers of the present invention according to following steps:

(1) drying glue: the 52.85g caouttchouc is placed under 30 ℃ drying glue 5 hours;

(2) broken glue: the caouttchouc after the drying glue breaks glue immediately.Roll spacing is 0.9mm when breaking glue;

(3) plasticate for the first time: caouttchouc is divided into 3 equal portions, every part of weight 17.62kg.Roll spacing is 0.9mm, requires clot and turns 90 ° and plasticate for following time.Cross roller 10 times continuously;

(4) park 4 hours after, carry out plasticating the second time.The roll spacing of plasticating for the second time is adjusted into 0.9mm, and clot is also turned 90 ° and plasticated continuous mistake roller 10 times following time.After parking 4 hours, get into calendering process;

(5) mixing: the virgin rubber that will plasticate is put into mill, makes its bag roller, after fully evenly wrapping roller, 14g zinc oxide, 2g Triple Pressed Stearic Acid, 0.5g N-PBNA, 0.05g N-cyclohexyl-N '-diphenyl-para-phenylene diamine is mixed, and divides 2 addings.After roller 2 times, it is uniformly dispersed, to divide afterwards to add 16g high abrasion furnace black(HAF), 13g spray carbon black and 0.5g butter for 2 times in turn, the mixing even back of carbon black and butter adds 0.1g 2-benzothiazolyl mercaptan, adds 1g sulphur at last.

Embodiment four

Prepare 60 degree tree elastomers of the present invention according to following steps:

(1) drying glue: the 53.1g caouttchouc is placed under 40 ℃ drying glue 4 hours;

(2) broken glue: the caouttchouc after the drying glue breaks glue immediately.Roll spacing is 0.7mm when breaking glue;

(3) plasticate for the first time: caouttchouc is divided into 4 equal portions, every part of weight 13.275kg.Roll spacing is 0.7mm, requires clot and turns 90 ° and plasticate for following time.Cross roller 15 times continuously;

(4) park 4 hours after, carry out plasticating the second time.The roll spacing of plasticating for the second time is 0.7mm, and clot is also turned 90 ° and plasticated continuous mistake roller 17 times following time.After parking 8 days, get into calendering process;

(5) mixing: the virgin rubber that will plasticate is put into mill, makes its bag roller, after fully evenly wrapping roller, 7g zinc oxide, 0.6g Triple Pressed Stearic Acid, 0.8gN-PBNA, 0.9gN-cyclohexyl-N '-diphenyl-para-phenylene diamine is mixed, and divides 3 addings.After roller 3 times, it is uniformly dispersed, to divide afterwards to add 10g high abrasion furnace black(HAF), 24g spray carbon black and 2.1g butter for 3 times in turn, the mixing even back of carbon black and butter adds 0.5g 2-benzothiazolyl mercaptan, adds 1g sulphur at last.

Comparative example and Comparative Examples can be known; The present invention adopts unique formula combination, makes each item performance of 60 degree tree elastomers compared to prior art, has all obtained significantly progressive; And greatly reduce production cost, solved the unsolved always technical barrier of prior art.

Applicant's statement; The present invention explains detailed process equipment of the present invention and technical process through the foregoing description; But the present invention is not limited to above-mentioned detailed process equipment and technical process, does not mean that promptly the present invention must rely on above-mentioned detailed process equipment and technical process could be implemented.The person of ordinary skill in the field should understand, and to any improvement of the present invention, to the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.

Claims (10)

1. spend tree elastomer for one kind 60, it comprises according to mass percent:

2. 60 degree tree elastomers as claimed in claim 1 is characterized in that it only is made up of following substances according to mass percent:

The said components sum is 100%.

3. 60 degree tree elastomers as claimed in claim 1 is characterized in that it is made up of following substances according to mass percent:

The said components sum is 100%.

4. like the described 60 degree tree elastomers of claim 1-3, it is characterized in that said vulcanizing agent is sulphur, organic sulfide, superoxide, MOX, benzoquinones, amine, a kind of or its mixture of preferred sulphur, organic sulfide, preferred especially sulphur;

Said promoting agent is made up of mineral-type promoting agent and organic type of promoting agent; Preferably form by zinc oxide and Triple Pressed Stearic Acid; Especially preferably be made up of 3%～14% zinc oxide and 0.2%～2.5% Triple Pressed Stearic Acid, its quality percentage composition is the percentage composition in said raw material;

Said promotor is thiazole accelerator, preferred 2-benzothiazolyl mercaptan;

Said anti-aging agent is made up of N-PBNA and N-cyclohexyl-N '-diphenyl-para-phenylene diamine; Preferably be made up of 0.3%～2.5% N-PBNA and N-cyclohexyl-N '-diphenyl-para-phenylene diamine of 0.05%～1.2%, its quality percentage composition is the percentage composition in said raw material;

Said softening agent is a butter.

5. 60 degree tree elastomers as claimed in claim 1 is characterized in that it comprises according to mass percent:

Rubber raw materials: tree elastomer 56.1%

Vulcanizing agent: sulphur 1.68%

Strengthening agent: high abrasion furnace black(HAF) 12.2%, spray carbon black 16.8%

Promoting agent: zinc oxide 8.41%, Triple Pressed Stearic Acid 1.12%

Promotor: 2-benzothiazolyl mercaptan 0.34%

Anti-aging agent: N-PBNA 1.12%, N-cyclohexyl-N '-diphenyl-para-phenylene diamine 0.56%

Softening agent: butter 1.67%.

6. like the production technique of the described 60 degree tree elastomers of claim 1-5, may further comprise the steps:

(1) drying glue: the caouttchouc of the regulation of will filling a prescription places under 30～70 ℃ drying glue at least 3 hours;

(2) broken glue: the caouttchouc after the drying glue breaks glue immediately.Roll spacing is 0.3mm～0.9mm when breaking glue;

(3) plasticate for the first time: caouttchouc is divided at least 3 equal portions, and every part of weight is no more than 20kg.Roll spacing is 0.3mm～0.9mm, requires clot and turns 90 ° and plasticate for following time.Cross roller 10～18 times continuously;

(4) park at least 3 hours after, carry out plasticating the second time.Plasticating for the second time still is that roll spacing is adjusted into 0.3mm～0.9mm, and clot is also turned 90 ° and plasticated continuous mistake roller 10～18 times following time.After parking at least 3 hours, the calendering process of being allowed for access;

(5) mixing: the virgin rubber that will plasticate is put into mill, makes its bag roller, and behind complete evenly bag roller, promoting agent and anti-aging agent mixing with the prescription regulation divide 2 addings at least.After roller at least 2 times; It is uniformly dispersed; At least divide the high abrasion furnace black(HAF), spray carbon black and the softening agent that add the prescription regulation for 2 times in turn afterwards, the mixing even back of high abrasion furnace black(HAF), spray carbon black and softening agent adds the promotor of prescription regulation, adds the vulcanizing agent of prescription regulation at last.

7. production technique as claimed in claim 6 is characterized in that, in the step (1), caouttchouc is placed carry out drying glue in the baking oven, preferred 40～60 ℃ of drying glue temperature; Preferably at least 4 hours drying glue time;

In the step (2), roll spacing is preferably 0.4mm～0.8mm when breaking glue, is preferably 0.5mm～0.7mm especially.

8. production technique as claimed in claim 6 is characterized in that, in the step (3), preferably caouttchouc is divided into 3 equal portions.

In the step (3), behind the preferred five equilibrium, every part of caouttchouc weight is no more than 18kg, further preferably is no more than 16kg, especially preferably is no more than 15kg.

In the step (3), preferred roll spacing is 0.4mm～0.8mm, and preferred especially roll spacing is 0.5mm～0.7mm.

In the step (3), preferred continuous roller 11～17 times of crossing, preferred especially continuous roller 12～15 times of crossing.

9. production technique as claimed in claim 6 is characterized in that, in the step (4), before carrying out plasticating the second time, preferably parks at least 4 hours.

In the step (4), the preferred roll spacing of plasticating for the second time is 0.4mm～0.8mm, and preferred especially roll spacing is 0.5mm～0.7mm.

In the step (4), preferred continuous roller 11～17 times of crossing, preferred especially continuous roller 12～15 times of crossing.

In the step (4), after plasticating for the second time, preferably park at least 4 hours after, further preferably be no more than 12 days, especially preferably be no more than 10 days, get into calendering process then.Preferably that the storage period is long rubber is plasticated again.

In the step (5), mixed promoting agent and anti-aging agent preferably divide 3 addings, preferred especially 3 times at least.

In the step (5), preferred roller excessively 2～4 times, preferred especially roller excessively 2～3 times.

In the step (5), high abrasion furnace black(HAF), spray carbon black and softening agent preferably divide 3 addings, preferred especially 3 times at least.

10. like the purposes of each described 60 degree tree elastomers of claim 1-9, it is characterized in that, be used to make rubber shock absorber.

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