CN105504428A - Preparation method of reclaimed rubber powder-plastified synthetic rubber - Google Patents

Preparation method of reclaimed rubber powder-plastified synthetic rubber Download PDF

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Publication number
CN105504428A
CN105504428A CN201610014733.XA CN201610014733A CN105504428A CN 105504428 A CN105504428 A CN 105504428A CN 201610014733 A CN201610014733 A CN 201610014733A CN 105504428 A CN105504428 A CN 105504428A
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CN
China
Prior art keywords
rubber powder
rubber
elastomeric
plastifies
regnerated
Prior art date
Application number
CN201610014733.XA
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Chinese (zh)
Inventor
赵海营
李广峰
赵学顺
赵荣滨
赵燕
Original Assignee
山东金山橡塑装备科技有限公司
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Priority to CN201610014733.XA priority Critical patent/CN105504428A/en
Publication of CN105504428A publication Critical patent/CN105504428A/en

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00Compositions of unspecified rubbers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00Properties characterising the ingredient of the composition
    • C08L2207/20Recycled plastic
    • C08L2207/24Recycled plastic recycling of old tyres and caoutchouc and addition of caoutchouc particles

Abstract

The invention belongs to the technical field of reclaimed rubber production, and particularly relates to a preparation method of reclaimed rubber powder-plastified synthetic rubber. The preparation method of the reclaimed rubber powder-plastified synthetic rubber comprises the following steps of 1 plastifying; 2 rubber piece rolling. According to the preparation method, no auxiliary needs to be added in the plastifying process, energy conservation and environment protection are achieved, and due to decreasing of the auxiliary adding amount and reducing of discharge in the production process, the energy consumption is reduced by 50% or above compared with a traditional technology; no wastewater or harmful gas is discharged, and compared with the traditional old technology that water needs to be added for temperature lowering and cooling, the novel technology has the advantages that the water does not need to be added, and therefore no wastewater is drained; closed and continuous automatic production is achieved, and no harmful gas emission brought by moisture evaporation exists.

Description

A kind of regnerated rubber powder plastifies elastomeric preparation method

Technical field

The invention belongs to the technical field that reclaimed rubber is produced, be specifically related to a kind of regnerated rubber powder and plastify elastomeric preparation method.

Background technology

In conventional regeneration rubber preparation process, need to add various auxiliary agent in plasticizing operation, mainly comprise various promotor, oxidation inhibitor, stablizer, thermo-stabilizer, initiator, softening agent etc., wherein tenderizer and activator are requisite materials in conventional regeneration Rubber processing additive, although containing a large amount of objectionable impuritiess in two kinds of auxiliary agents, inflammable and explosive, pollutant atmosphere, be detrimental to health, danger coefficient is high, but in existing reclaimed rubber processing, still consumption is surprising, wherein in the waste old course of processing consumption up to 15 ~ 30%.

And China produces the waste and old regenerated rubber of several ten million tons every year, all use the words of conventional rubber additive, the harm produced is difficult to the imagination, that is waste old is processed, reduced rubber performance, the cost paid is more much higher than producing the profit brought, and this is also external a lot of developed countries waste rubber goods reduction process, even shelves one of reason do not processed.Along with popularizing of family saloon, the output of the annual waste tire of automobile of China increases day by day, does not process if shelved, and will certainly cause environmental pollution, and form potential safety hazard, for China, reduction process cost is high, and utilization ratio is low, and market is little.

Summary of the invention

The object of the invention is to the defect for above-mentioned existence and provide a kind of regnerated rubber powder to plastify elastomeric preparation method, this preparation method does not need to add any auxiliary agent in plasticizing operation, energy-conserving and environment-protective, the minimizing of additive dosage and the minimizing of discharge in production process, make observable index traditional technology save more than 50%; Discharge without waste water and obnoxious flavour, comparing tradition needs to add water the old technology of cooling down rubber powder, and this preparation method does not need to add water, thus does not have discharge of wastewater; Airtight, serialization is produced automatically, does not have the noxious gas emission that water evaporation brings.

Technical scheme of the present invention is: a kind of regnerated rubber powder plastifies elastomeric preparation method, comprises the following steps:

(1) plastify: will be crushed to 30 ~ 60 object waste rubber powders and be added in rubber powder desulfurization Plasticator, carrying out being heated to temperature is 230 ~ 320 DEG C, carries out desulfurization plastics processing in atmospheric conditions; After desulfurization plasticizing, the sulfurous gas of gained converts liquid to by water cooler and discharges collection;

(2) friction sheet: the plasticized rubber powder after plastics processing is carried out being cooled to 38 ~ 40 DEG C; Then in assistant feeding device, add regenerated rubber plasticizing compound agent, be delivered in friction machine after this regenerated rubber plasticizing compound agent mixes with plasticized rubber powder and carry out friction sheet; Wherein said regenerated rubber plasticizing compound agent comprises following raw material: peptizer, stearic acid, zinc oxide, rosin, silicon-dioxide, scorch retarder and terpine resin.

Electromagnetic heater is provided with in rubber powder desulfurization Plasticator in described step (1) plasticizing.

In described step (2) friction sheet, assistant feeding device is agitator type adding set.

In described step (2) friction sheet, assistant feeding device is arranged at the exit of rubber powder desulfurization Plasticator in described step (1).

In described step (2) friction sheet, regenerated rubber plasticizing compound agent comprises the raw material of following weight part: peptizer 0.5 ~ 1.2 part, stearic acid 3 ~ 6 parts, 6 ~ 9 parts, zinc oxide, rosin 2.5 ~ 5 parts, silicon-dioxide 30 ~ 60 parts, scorch retarder 0.8 ~ 1.6 part and terpine resin 5 ~ 8 parts.

In described regenerated rubber plasticizing compound agent, peptizer is at least one in SJ-103, peptizer R.

In described regenerated rubber plasticizing compound agent, scorch retarder is at least one in organic acid, nitroso compound class and sulfenamide.

In described regenerated rubber plasticizing compound agent, terpine resin is 138# ester gum or 145# Gum Rosin or black rosin resin.

In described step (2) friction sheet, the top of friction machine is provided with water spraying device.

Beneficial effect of the present invention is: it take waste rubber powder as raw material that regnerated rubber powder of the present invention plastifies elastomeric preparation method, any auxiliary agent is not added in plasticizing process, process under the high temperature of 230-320 DEG C through automatization normal pressure, rubber powder desulfurization Plasticator that is anhydrous, non-exhaust emission, rubber activity molecule is activated again, elasticity and the toughness of rubber are also recovered to some extent, and the regnerated rubber powder of acquisition has very strong plasticity-.Under the proper temperature condition of 230-320 DEG C, impel the molecular chain of rubber molecule-S-C-S key fully to open, isolate sulfur molecule, free radical-rubber chain in rubber molecule freely combines once again, the rubber molecule of final formation not sulfur-bearing, the original attribute of reduced rubber, improves the performance index of regenerated rubber.The present invention only adopts the mode of heat, just rubber molecule can be impelled to recover plasticity-, change plasticizing in the processing of conventional regeneration glue rubber powder and must add the feature of tenderizer and activator, both saved the energy, additionally reduce and add above auxiliary agent and react the environmental pollution brought.Simultaneously with the regnerated rubber powder that this type of explained hereafter goes out, making rubber item can be directly used in, use after also can carrying out banburying refining reprocessing.

In the plasticizing process of preparation method of the present invention, rubber powder is at Plasticator internal cooling, and the temperature when cooled rubber powder is discharged outside Plasticator is between 38 ~ 40 DEG C, and the rubber powder of discharge now directly can enter friction machine friction sheet; Compare in traditional technology and need the cooling down rubber powder that adds water, the present invention does not need to add water, and does not just have discharge of wastewater yet; Airtight, serialization is produced automatically, does not have aqueous vapor to evaporate the noxious gas emission brought.

Only add regenerated rubber plasticizing compound agent in process of production, do not use any other Rubber Softener, activator, reduce because tenderizer, activator use the pollution problem brought.Described regnerated rubber powder plastifies employing that regenerated rubber in novel plasticizing mode and friction sheet process plastifies compound agent by elastomeric preparation method and works in coordination with and be combined into complete organic whole, make to produce rubber powder quality to be greatly improved, non-odor generated rubber tensile strength can reach 16.5, extensibility can reach 500%, and mooney viscosity can be down to 50.Ask for an interview table 1 in detail.

Table 1

Regnerated rubber powder of the present invention plastifies elastomeric preparation method not to be needed to add any auxiliary agent, energy-conserving and environment-protective in plasticizing operation, the minimizing of additive dosage and the minimizing of discharge in production process, makes observable index traditional technology save more than 50%; Discharge without waste water and obnoxious flavour, comparing tradition needs to add water the old technology of cooling down rubber powder, and this preparation method does not need to add water, thus does not have discharge of wastewater; Airtight, serialization is produced automatically, does not have the noxious gas emission that water evaporation brings.

Embodiment

Below by embodiment, the present invention will be described in detail.

A kind of regnerated rubber powder plastifies elastomeric preparation method, comprises the following steps:

(1) plastify: will be crushed to 30 ~ 60 object waste rubber powders and be added in rubber powder desulfurization Plasticator, carrying out being heated to temperature is 230 ~ 320 DEG C, carries out desulfurization plastics processing in atmospheric conditions; After desulfurization plasticizing, the sulfurous gas of gained converts liquid to by water cooler and discharges collection; Wherein be provided with electromagnetic heater in rubber powder desulfurization Plasticator in plasticizing.

(2) friction sheet: the plasticized rubber powder after plastics processing is carried out being cooled to 38 ~ 40 DEG C; Then in the agitator type adding set being arranged at rubber powder desulfurization Plasticator exit, add regenerated rubber plasticizing compound agent, be delivered in friction machine after this regenerated rubber plasticizing compound agent mixes with plasticized rubber powder and carry out friction sheet; Wherein said regenerated rubber plasticizing compound agent comprises the raw material of following weight part: peptizer 0.5 ~ 1.2 part, stearic acid 3 ~ 6 parts, 6 ~ 9 parts, zinc oxide, rosin 2.5 ~ 5 parts, silicon-dioxide 30 ~ 60 parts, scorch retarder 0.8 ~ 1.6 part and terpine resin 5 ~ 8 parts.

In described regenerated rubber plasticizing compound agent, peptizer is at least one in SJ-103, peptizer R.

In described regenerated rubber plasticizing compound agent, scorch retarder is at least one in organic acid, nitroso compound class and sulfenamide.Organic acid scorch retarder can select phenylformic acid, Whitfield's ointment, M-nitro benzoic acid, adjacent acetic acid phenylformic acid, Tetra hydro Phthalic anhydride; Nitroso compound class scorch retarder can select N nitrosodiphenyl amine, N-nitroso-group-Phenyl beta naphthylamine, N-nitroso-group-2,2,4 trimethyl 1,2 dihydroquinoline polymer; Sulfonamide antiscorchiag agent is a series of compounds containing S-N bonding, and general formula of molecular structure is as follows: R1 (R2)-N-S-R3.

In described regenerated rubber plasticizing compound agent, terpine resin is 138# ester gum or 145# Gum Rosin or black rosin resin.

In described step (2) friction sheet, the top of friction machine is provided with water spraying device.

Claims (9)

1. regnerated rubber powder plastifies an elastomeric preparation method, comprises the following steps:
(1) plastify: will be crushed to 30 ~ 60 object waste rubber powders and be added in rubber powder desulfurization Plasticator, carrying out being heated to temperature is 230 ~ 320 DEG C, carries out desulfurization plastics processing in atmospheric conditions; After desulfurization plasticizing, the sulfurous gas of gained converts liquid to by water cooler and discharges collection;
(2) friction sheet: the plasticized rubber powder after plastics processing is carried out being cooled to 38 ~ 40 DEG C; Then in assistant feeding device, add regenerated rubber plasticizing compound agent, be delivered in friction machine after this regenerated rubber plasticizing compound agent mixes with plasticized rubber powder and carry out friction sheet; Wherein said regenerated rubber plasticizing compound agent comprises following raw material: peptizer, stearic acid, zinc oxide, rosin, silicon-dioxide, scorch retarder and terpine resin.
2. regnerated rubber powder plastifies elastomeric preparation method according to claim 1, it is characterized in that, is provided with electromagnetic heater in described step (1) plasticizing in rubber powder desulfurization Plasticator.
3. regnerated rubber powder plastifies elastomeric preparation method according to claim 1, it is characterized in that, in described step (2) friction sheet, assistant feeding device is agitator type adding set.
4. regnerated rubber powder plastifies elastomeric preparation method according to claim 3, it is characterized in that, in described step (2) friction sheet, assistant feeding device is arranged at the exit of rubber powder desulfurization Plasticator in described step (1).
5. regnerated rubber powder plastifies elastomeric preparation method according to claim 1, it is characterized in that, in described step (2) friction sheet, regenerated rubber plasticizing compound agent comprises the raw material of following weight part: peptizer 0.5 ~ 1.2 part, stearic acid 3 ~ 6 parts, 6 ~ 9 parts, zinc oxide, rosin 2.5 ~ 5 parts, silicon-dioxide 30 ~ 60 parts, scorch retarder 0.8 ~ 1.6 part and terpine resin 5 ~ 8 parts.
6. regnerated rubber powder plastifies elastomeric preparation method according to claim 5, it is characterized in that, in described regenerated rubber plasticizing compound agent, peptizer is at least one in SJ-103, peptizer R.
7. regnerated rubber powder plastifies elastomeric preparation method according to claim 5, it is characterized in that, in described regenerated rubber plasticizing compound agent, scorch retarder is at least one in organic acid, nitroso compound class and sulfenamide.
8. regnerated rubber powder plastifies elastomeric preparation method according to claim 5, it is characterized in that, in described regenerated rubber plasticizing compound agent, terpine resin is 138# ester gum or 145# Gum Rosin or black rosin resin.
9. regnerated rubber powder plastifies elastomeric preparation method according to claim 1, it is characterized in that, in described step (2) friction sheet, the top of friction machine is provided with water spraying device.
CN201610014733.XA 2016-01-08 2016-01-08 Preparation method of reclaimed rubber powder-plastified synthetic rubber CN105504428A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101434710A (en) * 2008-12-18 2009-05-20 泰安市金山橡胶工业有限公司 Automatic rubber powder plasticizing process and apparatus thereof
CN103435843A (en) * 2013-08-29 2013-12-11 中胶橡胶资源再生(青岛)有限公司 Reclaiming agent, reclaimed rubber prepared therefrom, and preparation method of reclaimed rubber
CN103937059A (en) * 2014-04-10 2014-07-23 青岛通力橡胶科技有限公司 Environment-friendly reclaimed rubber with high tenacity and stable Mooney viscosity and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101434710A (en) * 2008-12-18 2009-05-20 泰安市金山橡胶工业有限公司 Automatic rubber powder plasticizing process and apparatus thereof
CN103435843A (en) * 2013-08-29 2013-12-11 中胶橡胶资源再生(青岛)有限公司 Reclaiming agent, reclaimed rubber prepared therefrom, and preparation method of reclaimed rubber
CN103937059A (en) * 2014-04-10 2014-07-23 青岛通力橡胶科技有限公司 Environment-friendly reclaimed rubber with high tenacity and stable Mooney viscosity and preparation method thereof

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