CN111073089B - Migration-free low-Mooney rebound reclaimed rubber and preparation method thereof - Google Patents
Migration-free low-Mooney rebound reclaimed rubber and preparation method thereof Download PDFInfo
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- CN111073089B CN111073089B CN201911248117.0A CN201911248117A CN111073089B CN 111073089 B CN111073089 B CN 111073089B CN 201911248117 A CN201911248117 A CN 201911248117A CN 111073089 B CN111073089 B CN 111073089B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/005—Methods for mixing in batches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/007—Methods for continuous mixing
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention relates to a migration-free low-Mooney rebound reclaimed rubber and a preparation method thereof, which adopts whole tire rubber powder, an environment-friendly migration-free regeneration activator B910, a swelling agent castor oil, tackifier wood rosin, reinforcing resin RE resin, a deodorant montmorillonite nano reaction additive, adsorbent white carbon black, a Mooney control agent CTP and friedel-crafts, selects a rubber recovery machine system independently developed by our company according to a reasonable proportion, strictly controls the process flow, has excellent performance of the prepared reclaimed rubber, achieves the migration-free and low-Mooney rebound value of the reclaimed rubber surface, has high standard service performance, process performance and physical and mechanical performance, and can be applied to soles and color matching rubber products.
Description
Technical Field
The invention belongs to the technical field of reclaimed rubber, and particularly relates to migration-free low-Mooney rebound reclaimed rubber and a preparation method thereof.
Background
China is the biggest world producing and consuming country of reclaimed rubber, and the consumption of the reclaimed rubber is about 470 million tons each year recently. However, the method has a certain gap from the China where reclaimed rubber is produced, has large yield and low grade, and cannot meet the requirements of no surface transference and low Mooney viscosity value of users at the national standard and at home and abroad, mainly because the traditional method for producing reclaimed rubber is old, and the multifunctional raw material development and the modern process reformation cannot be carried out across the industry. The reclaimed rubber product with excellent comprehensive performance, low immigration and low Mooney rebound is widely applied, no manufacturer exists at present, and the development of the reclaimed rubber with low Mooney rebound and no immigration is a blank for filling reclaimed rubber products at home and abroad.
Coal tar or heavy asphalt oil is adopted as a softening agent in the common full tyre reclaimed rubber in the industry, the desulfurization swelling property is low, the Mooney reduction is realized by subsequent continuous and repeated mechanical processing, the organic migration on the surface of the rubber material is obviously lost, the Mooney rebound is serious (30-45/month in summer) after the rubber material is parked, the obvious processing difficulty is brought to customers, and the complaint problem is frequently caused.
Chinese patent CN 109942923A discloses a formula of a Mooney viscosity-stabilized reclaimed rubber, which is prepared from waste rubber powder, a softening agent and a stabilizing agent LJR-1, wherein the softening agent is one or a mixture of coal tar, aromatic oil, pine tar, tall oil, naphthenic oil, dipentene, paraffin oil, oleic acid and rosin; in the patent, a large amount of black softening agent coal tar is added in the regeneration process, and the prepared reclaimed rubber has very unpleasant smell and great pollution.
Disclosure of Invention
The invention aims to provide a migration-free low-Mooney rebound reclaimed rubber and a preparation method thereof.
The technical scheme adopted by the invention for solving the problems is as follows: a migration-free low-Mooney rebound reclaimed rubber comprises the following components in parts by mass:
full tire rubber powder of truck tire 100 parts
10 portions of swelling agent castor oil
9100.25 parts of regeneration activator B
Tackifier wood rosin 2.5 parts
Reinforcing resin resorcinol-acetaldehyde precondensation resin 1.5 parts
3 parts of deodorant nano montmorillonite
Adsorbent 1.5 parts
Mooney control agent 0.5 part
1 part of friedel-crafts.
Preferably, the mesh number of the full tire rubber powder of the truck tire is 30-60 meshes.
Preferably, the adsorbent is white carbon black.
Preferably, the mooney control agent is CTP.
The invention also aims to provide a preparation method of the reclaimed rubber with no migration and low Mooney rebound, which comprises the following process flows:
(1) screening and weighing raw materials.
(2) The method comprises the following steps of uniformly mixing the whole tire rubber powder of the truck tire, castor oil as a swelling agent, a regeneration activator B910, wood rosin as a tackifier and resorcinol-acetaldehyde precondensation resin (RE resin) as a reinforcing resin to obtain mixed powder.
(3) And (4) feeding the mixed rubber material into a continuous recovery machine for desulfurization.
(4) Mixing the desulfurized rubber powder with a mixed functional additive consisting of nano montmorillonite serving as a deodorant, an adsorbent, a Mooney control agent and Friedel-crafts in a mixing tank.
(5) And (4) carrying out open milling and kneading on the rubber powder uniformly mixed in the step (4), and then carrying out filtration and milling.
(6) And (4) refining, blanking, weighing, inspecting, marking and warehousing the product mixed in the step (5).
Preferably, the preparation method of the migration-free low-mooney rebound reclaimed rubber specifically comprises the following process flows:
(1) screening and weighing raw materials.
(2) The method comprises the following steps of stirring the whole tire rubber powder of the truck tire, castor oil as a swelling agent, a regeneration activator B910, wood rosin as a tackifier and RE resin as a reinforcing resin at a high speed in a mixing tank at a temperature of 100-130 ℃ for 200-250 seconds to obtain mixed powder.
(3) And (3) the mixed rubber material enters a continuous recovery machine to be desulfurized at the temperature of 180-290 ℃ for 15-25 min.
(4) Mixing the desulfurized rubber powder with a mixed functional additive consisting of nano montmorillonite serving as a deodorant, an adsorbent, a Mooney control agent and Friedel-crafts.
(5) And (3) carrying out open milling and kneading on the rubber powder uniformly mixed in the step (4) at 70-90 ℃, and then carrying out filtration and milling at the milling temperature of 90-110 ℃.
(6) And (4) refining the product mixed in the step (5) at 50-60 ℃, slicing, weighing, inspecting, marking and warehousing.
Compared with the prior art, the invention has the advantages that:
(1) the rubber powder particles are permeated, swelled and mixed by the regenerated activator and the swelling agent, particularly by adopting the Friedel-crafts multifunctional dispersing and adsorbing auxiliary agent, so that the ideal desulfurization degree is easily achieved, and the precipitation of migrating pollutants and the rebound of Mooney viscosity values are inhibited; the castor oil is used as a softener to improve compatibility, and the matching use of the RE resin and the wood rosin improves the physical property and increases the processing property of the sizing material.
(2) In the preparation method, equipment such as a normal-pressure single-screw continuous extrusion recovery machine, a refining machine, a mixing and stirring tank and the like is utilized, and the optimal process conditions such as desulfurization temperature, material stirring and mixing, filtering and extrusion, refining and sheet discharging and the like are determined, so that the prepared reclaimed rubber has no migration and low Mooney rebound.
(3) The invention selects the raw materials preferably, selects a rubber recovery machine system independently developed by our company according to a reasonable proportion, strictly controls the process flow, and ensures that the prepared reclaimed rubber has excellent performance, and reaches the use performance, the process performance and the physical and mechanical properties of the reclaimed rubber with the surface free of migration and the low Mooney rebound value and the high standard.
Drawings
FIG. 1 is a process flow diagram of the migration-free low-Mooney rebound reclaimed rubber of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1, the process flow of the reclaimed rubber of the present example is shown.
Examples
A migration-free low-Mooney rebound reclaimed rubber comprises the following components in parts by mass:
100 portions of 40-mesh truck tire whole tire rubber powder
10 portions of swelling agent castor oil
9100.25 parts of regeneration activator B
Tackifier wood rosin 2.5 parts
Reinforced resin RE resin 1.5 parts
3 parts of deodorant nano montmorillonite
Adsorbent white carbon black 1.5 parts
Mooney control agent CTP 0.5 part
1 part of friedel-crafts.
A preparation method of a migration-free low-Mooney rebound reclaimed rubber specifically comprises the following process flows:
(1) screening and weighing raw materials.
(2) The method comprises the following steps of stirring the whole tyre rubber powder of the truck tyre, the castor oil swelling agent, the regeneration activator B910, the tackifier wood rosin and the reinforcing resin RE resin in a mixing tank at a high speed for 225 seconds at a temperature of 120 ℃ to obtain mixed powder.
(3) And (3) enabling the mixed rubber material to enter a continuous recovery machine for desulfurization at the temperature of 240 ℃ for 20 min.
(4) The desulfurized rubber powder is mixed with a mixed functional additive consisting of nano montmorillonite serving as a deodorant, white carbon black serving as an adsorbent, a Mooney control agent CTP and friedel-crafts.
(5) And (3) mixing and kneading the rubber powder uniformly mixed in the step (4) at the temperature of 80 ℃, and then filtering and mixing the rubber powder at the mixing temperature of 100 ℃.
(6) And (4) refining the product mixed in the step (5) at 50-60 ℃, slicing, weighing, inspecting, marking and warehousing.
Comparative example 1
The only difference from the examples is: the swelling agent is selected from aromatic oil.
Comparative example 2
The only difference from the examples is: the regeneration activator is selected from tetramethylthiuram disulfide (TMTD).
Comparative example 3
The only difference from the examples is: the deodorant is selected from JH-100A.
Comparative example 4
A migration-free low-Mooney rebound reclaimed rubber comprises the following components in parts by mass:
100 portions of 40-mesh truck tire whole tire rubber powder
Swelling agent castor oil 8 parts
9100.75 parts of regeneration activator B
Tackifier wood rosin 2 parts
Reinforced resin RE resin 3.5 parts
3 parts of deodorant nano montmorillonite
Adsorbent white carbon black 1 part
Mooney control agent CTP 1 part
1 part of friedel-crafts.
The preparation method is the same as the embodiment.
The physical and mechanical properties of the reclaimed rubber of the examples and the comparative examples are determined according to the national standard (GB/T13460-2016), and the performance test results are shown in Table 1:
table 1 table of performance test results
In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.
Claims (5)
1. A migration-free low-Mooney rebound reclaimed rubber is characterized in that: comprises the following components in parts by mass:
full tire rubber powder of truck tire 100 parts
10 portions of swelling agent castor oil
9100.25 parts of regeneration activator B
Tackifier wood rosin 2.5 parts
Reinforcing resin resorcinol-acetaldehyde precondensation resin 1.5 parts
3 parts of deodorant nano montmorillonite
Adsorbent 1.5 parts
Mooney control agent 0.5 part
1 part of friedel-crafts;
the mesh number of the full tire rubber powder of the truck tire is 30-60 meshes.
2. The migration-free low-mooney rebound reclaimed rubber according to claim 1, wherein: the adsorbent is white carbon black.
3. The migration-free low-mooney rebound reclaimed rubber according to claim 1, wherein: the mooney control agent is CTP.
4. A method for preparing a migration-free low-mooney rebound reclaimed rubber according to any one of claims 1 to 3, wherein: the method comprises the following process flows:
(1) screening and weighing raw materials;
(2) the method comprises the following steps of uniformly mixing full tyre rubber powder of the truck tyre, castor oil as a swelling agent, a regeneration activator B910, wood rosin as a tackifier and resorcinol-acetaldehyde pre-condensed resin as a reinforcing resin in a mixing tank to obtain mixed powder;
(3) the mixed sizing material enters a continuous recovery machine for desulfurization;
(4) mixing the desulfurized rubber powder with a mixed functional additive consisting of nano montmorillonite serving as a deodorant, an adsorbent, a Mooney control agent and Friedel-crafts in a mixing tank according to the mass ratio;
(5) carrying out open milling and kneading on the rubber powder uniformly mixed in the step (4), and then carrying out filtration and mixing;
(6) and (4) refining, blanking, weighing, inspecting, marking and warehousing the product mixed in the step (5).
5. The method for preparing the transfer-free low-mooney rebound reclaimed rubber according to claim 4, wherein: the method specifically comprises the following process flows:
(1) screening and weighing raw materials;
(2) stirring the whole tire rubber powder of the truck tire, castor oil as a swelling agent, a regeneration activator B910, wood rosin as a tackifier and resorcinol-acetaldehyde precondensation resin as a reinforcing resin in a mixing tank at a high speed for 200-250 seconds at a temperature of 100-130 ℃ to obtain mixed powder;
(3) the mixed sizing material enters a continuous recovery machine to be desulfurized at the temperature of 180-290 ℃ for 15-25 min;
(4) mixing the desulfurized rubber powder with a mixed functional additive consisting of deodorant nano montmorillonite, an adsorbent, a Mooney control agent and Friedel-crafts in a mixing tank at the mixing temperature of 40-50 ℃;
(5) mixing and kneading the rubber powder uniformly mixed in the step (4) at 70-90 ℃, and then filtering and mixing at 90-110 ℃;
(6) and (4) refining the product mixed in the step (5) at 50-60 ℃, slicing, weighing, inspecting, marking and warehousing.
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| CN111073089B true CN111073089B (en) | 2022-02-08 |
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Citations (4)
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| WO2011038578A1 (en) * | 2009-09-30 | 2011-04-07 | Chen Huihong | Preparation method of complex composition for rubber products and product obtained therefrom |
| CN102775633A (en) * | 2012-05-10 | 2012-11-14 | 泉州市华阳鞋材科技有限公司 | Low-temperature desulfurating production method for recycling waste rubber |
| CN104194036A (en) * | 2014-08-28 | 2014-12-10 | 中胶橡胶资源再生（青岛）有限公司 | Regenerant for regenerated rubber and preparation method of regenerant |
| CN108219192A (en) * | 2018-01-11 | 2018-06-29 | 徐州工业职业技术学院 | A kind of method that low-temp desulfurization produces environmental friendly regenerated glue |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU229788B1 (en) * | 2011-03-31 | 2014-07-28 | Carbon Black Kft | Recycled composition and process for preparation of it and production of regenarated, vulcanised gum |
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- 2019-12-09 CN CN201911248117.0A patent/CN111073089B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011038578A1 (en) * | 2009-09-30 | 2011-04-07 | Chen Huihong | Preparation method of complex composition for rubber products and product obtained therefrom |
| CN102775633A (en) * | 2012-05-10 | 2012-11-14 | 泉州市华阳鞋材科技有限公司 | Low-temperature desulfurating production method for recycling waste rubber |
| CN104194036A (en) * | 2014-08-28 | 2014-12-10 | 中胶橡胶资源再生（青岛）有限公司 | Regenerant for regenerated rubber and preparation method of regenerant |
| CN108219192A (en) * | 2018-01-11 | 2018-06-29 | 徐州工业职业技术学院 | A kind of method that low-temp desulfurization produces environmental friendly regenerated glue |
Non-Patent Citations (2)
| Title |
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| "环保型无污染活化剂910的应用";董诚春;《橡塑资源利用》;20100228(第1期);第8-9页 * |
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