CN102093609A - Method for preparing waste tire rubber powder/polyethylene blend - Google Patents
Method for preparing waste tire rubber powder/polyethylene blend Download PDFInfo
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- CN102093609A CN102093609A CN 201010550838 CN201010550838A CN102093609A CN 102093609 A CN102093609 A CN 102093609A CN 201010550838 CN201010550838 CN 201010550838 CN 201010550838 A CN201010550838 A CN 201010550838A CN 102093609 A CN102093609 A CN 102093609A
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Abstract
The invention discloses a method for preparing a waste tire rubber powder/polyethylene blend, which is characterized by introducing active groups into the surface of waste rubber micro powder by using the ozone treatment method; introducing an oxygen-containing polar group to polyethylene molecular chains by the irradiation of gamma-rays or electron beams; adding 60-90 parts by weight of ozone-treated waste tire rubber powder, 40-10 parts by weight of irradiated polyethylene and 0-1 part by weight of antioxidant into a high-speed mixer, and uniformly mixing and milling for 8-20 min at the temperature of 140-180 DEG C by using a double-roller open mill to obtain the waste tire rubber powder/polyethylene blend. Hydrogen bonding or chemical reaction is carried out at the two-phase interface of the blend, thereby the adhesion of the two-phase interface is increased. When the blend is compared with unmodified blend, the tensile strength, the breaking elongation rate and the Young modulus of the blend system are obviously increased, and blend has excellent cost performance. The waste tire rubber powder/polyethylene blend is applied to the fields of automobile linings, roof water-proof sheets, automobile silencing channel matting, oil field pipeline protection, shock absorption and silencing materials, etc.
Description
Technical field
The present invention relates to a kind of preparation method of waste-tyre rubber-powder/polyethylene blend, belong to polymer processing field.
Background technology
Along with the raising of industrialized level, both at home and abroad the output of rubber item, particularly rubber tyre increases progressively rapidly, and the harm that thereupon brings is a large amount of to scrap tire and the rubber waste causes great pollution to environment.The recycling of waste rubber causes that more and more people pay attention to.The waste rubber pulverizing is prepared into rubber powder, uses with other material blending then to be considered to the optimal path that waste rubber is recycled.Wherein prepare rubber powder/resin thermoplastic elastomer and have the application prospect of reality the most.
Waste old is pulverized made shoddy surface, back and is inertia, is a kind of material of being made up of rubber, carbon black, tenderizer and vulcanization accelerator etc. that contains crosslinking structure.Because the surface properties difference, consistency is relatively poor between it and rubber or the plastic substrate.Directly mix in rubber or plastics, two alternate interfaces are difficult to form combination preferably, thereby cause the decline of blend mechanical property.For improving the mechanical property of blend, improve rubber powder and combine, the method for resin/rubber powder blend modification that bibliographical information arranged both at home and abroad with the interface of macromolecular material, [Wu DY, Bateman S, Partlett M, Compos.Sc.Technol.2007,67,1909-1919; Wu Baohua, Tan Kuilong, Meng Hong, Li Chunxi, prince's pick, rubber industry, 2009,56 (4), 202-206] as silane coupler modified, compatilizer (ethylene-acrylic acid copolymer, chlorinatedpolyethylene, epoxy natural rubber, liquid acrylonitrile butadiene rubber or the like) modification, these methods have obtained certain modified effect, but adopt the method for ozone to introduce active group on the surface of waste-tyre rubber-powder; Contain the oxygen polar group by irradiance method in the polyethylene surface introducing, the technology that strengthens both interfacial interactions does not see that as yet patent and non-patent literature report are arranged.
Summary of the invention
The objective of the invention is to provide a kind of preparation method of waste-tyre rubber-powder/polyethylene blend at the deficiencies in the prior art.Be characterized in handling, introduce active group from the teeth outwards by method surface to waste-tyre rubber-powder in reaction medium of ozone.And adopt gamma-radiation or electron beam that polyethylene is carried out irradiation, on its molecular chain, introduce and contain the oxygen polar group, again above-mentioned the two carried out blend, make using rubber powder of waste tire and polyethylene two-phase interface produce hydrogen bonding or chemical reaction, thereby strengthened the interface compatibility of co-mixing system.This blend is compared with the blend of non-modified, the tensile strength of modification co-mixing system, and elongation at break and Young's modulus all are significantly increased, and good cost performance is arranged.
Purpose of the present invention adopts following technical measures to realize that wherein said raw material umber is parts by weight except that specified otherwise.
The preparation method of waste-tyre rubber-powder/polyethylene blend.It is characterized in that this method may further comprise the steps:
(1) poly irradiation
In room temperature and air, polyethylene 40-10 weight part is carried out irradiation, irradiation dose is 10-100kGy, makes the reaction of polyethylene generation oxidative cleavage, molecular weight reduces, and introduces oxy radical on its molecular chain;
(2) adopt the method for ozonize to introduce active group on the waste-tyre rubber-powder surface
In the presence of room temperature and reaction medium, waste rubber micropowder is carried out ozonize, ozone concn is 1.0-5.0mg/L, the treatment time is 0.5-6h, makes on the surface of waste rubber micropowder and introduces active group;
(3) preparation of waste-tyre rubber-powder/polyethylene blend
With the waste-tyre rubber-powder 60-90 weight part after the ozonize, the polyethylene 40-10 weight part behind the irradiation, oxidation inhibitor 0-1 weight part, add mix in the high-speed mixer back adopt two roller mills temperature 140-180 ℃ mixing 8-20 minute,
Polyethylene is any in high density polyethylene(HDPE), new LDPE (film grade) or the linear low density polyethylene.
The ozonize medium is any in air, water or the ammoniacal liquor.
Oxidation inhibitor is four [β-(3,5-di-t-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester, at least a in three (2, the 4-di-tert-butyl-phenyl) phosphorous acid esters and β-positive octadecanol ester of (3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid.
Waste-tyre rubber-powder/polyethylene blend that the preparation method of employing waste-tyre rubber-powder/polyethylene blend prepares.
Waste-tyre rubber-powder/polyethylene blend is used for automobile internal gasket, roof water-proof sheet material, automotive silencing road, oil field pipe protection, damping and sound-proof material field.
Performance test: adopt Instron 4302 universal tensile testing machines,, waste-tyre rubber-powder/polyethylene blend is carried out Mechanics Performance Testing according to standard GB 13022-91.The result shows that the present invention compares with the blend of non-modified, the tensile strength of modification co-mixing system, and elongation at break and Young's modulus all are significantly increased, detailed being shown in Table 1.
The present invention has following advantage: technology is simple, and is easy and simple to handle, and cost is lower, and waste-tyre rubber-powder/polyethylene blend has excellent comprehensive performances.
Embodiment
Below by embodiment the present invention is specifically described; be necessary to be pointed out that at this following examples only are used for the present invention is further specified; can not be interpreted as limiting the scope of the invention, the person skilled in the art in this field can make some nonessential improvement and adjustment to the present invention according to foregoing.
Embodiment 1:
Adopt ozonizer in air waste rubber powder to be carried out ozonize, ozone concn is 5.0mg/L, and the treatment time is 0.5h; Adopt JJ-2 type electrostatic accelerator, at room temperature in the air, polyethylene is carried out irradiation, irradiation dose is 100kGy.Again the waste rubber powder of 60kg ozonize, 40kg irradiated polyethylene, 0.1kg four [β-(3,5-di-t-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester are adopted high-speed mixer to mix the back with two roller mills under 140 ℃ of temperature mixing 8 minutes.
Embodiment 2:
Adopt ozonizer in water waste rubber powder to be carried out ozonize, ozone concn is 2.5mg/L, and the treatment time is 3h; Adopt right cylinder formula Co
60Gamma ray projector at room temperature in the air, carries out irradiation to polyethylene, and irradiation dose is 50kGy.Again the positive octadecanol ester of waste rubber powder, 10kg irradiated polyethylene, 0.5kg β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid of 90kg ozonize is adopted high-speed mixer to mix the back with two roller mills under 160 ℃ of temperature mixing 10 minutes.
Embodiment 3:
Adopt ozonizer in ammoniacal liquor waste rubber powder to be carried out ozonize, ozone concn is 1.0mg/L, and the treatment time is 6h; Adopt right cylinder formula Co
60Gamma ray projector at room temperature in the air, carries out irradiation to polyethylene, and irradiation dose is 10kGy.Again with waste rubber powder, 30kg irradiated polyethylene, the 0.5kg four [β-(3 of 70kg ozonize, 5-di-t-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester, 1kg three (2, the 4-di-tert-butyl-phenyl) phosphorous acid ester adopts high-speed mixer to mix the back with two roller mills under 180 ℃ of temperature mixing 20 minutes.
Table 1 modified blends of the present invention and unmodified blend performance are relatively
Claims (6)
1. the preparation method of a waste-tyre rubber-powder/polyethylene blend.It is characterized in that this method may further comprise the steps:
(1) poly irradiation
In room temperature and air, polyethylene 40-10 weight part is carried out irradiation, irradiation dose is 10-100kGy, makes the reaction of polyethylene generation oxidative cleavage, molecular weight reduces, and introduces oxy radical on its molecular chain;
(2) adopt the method for ozonize to introduce active group on the waste-tyre rubber-powder surface
In the presence of room temperature and reaction medium, waste rubber micropowder is carried out ozonize, ozone concn is 1.0-5.0mg/L, the treatment time is 0.5-6h, makes on the surface of waste rubber micropowder and introduces active group;
(3) preparation of waste-tyre rubber-powder/polyethylene blend
With the waste-tyre rubber-powder 60-90 weight part after the ozonize, the polyethylene 40-10 weight part behind the irradiation, oxidation inhibitor 0-1 weight part, add mix in the high-speed mixer back adopt two roller mills temperature 140-180 ℃ mixing 8-20 minute.
2. the preparation method of waste-tyre rubber-powder/polyethylene blend according to claim 1 is characterized in that polyethylene is any in high density polyethylene(HDPE), new LDPE (film grade) or the linear low density polyethylene.
3. the preparation method of waste-tyre rubber-powder/polyethylene blend according to claim 1 is characterized in that the ozonize medium is any in air, water or the ammoniacal liquor.
4. the preparation method of waste-tyre rubber-powder/polyethylene blend according to claim 1, it is characterized in that oxidation inhibitor is four [β-(3,5-di-t-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester, three (2, the 4-di-tert-butyl-phenyl) at least a in phosphorous acid ester and β-positive octadecanol ester of (3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid.
5. waste-tyre rubber-powder/polyethylene blend of preparing of the preparation method of waste-tyre rubber-powder/polyethylene blend according to claim 1.
6. as the purposes of waste-tyre rubber-powder/polyethylene blend as described in the claim 5, it is characterized in that this blend is used for automobile internal gasket, roof water-proof sheet material, automotive silencing road, oil field pipe protection, damping and sound-proof material field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010550838 CN102093609B (en) | 2010-11-19 | 2010-11-19 | Method for preparing waste tire rubber powder/polyethylene blend |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010550838 CN102093609B (en) | 2010-11-19 | 2010-11-19 | Method for preparing waste tire rubber powder/polyethylene blend |
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| Publication Number | Publication Date |
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| CN102093609A true CN102093609A (en) | 2011-06-15 |
| CN102093609B CN102093609B (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010550838 Expired - Fee Related CN102093609B (en) | 2010-11-19 | 2010-11-19 | Method for preparing waste tire rubber powder/polyethylene blend |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105037865A (en) * | 2015-08-20 | 2015-11-11 | 华南理工大学 | Modified scrap rubber powder as well as preparation method and application thereof |
| CN105885195A (en) * | 2016-05-30 | 2016-08-24 | 蚌埠市维光塑胶制品有限公司 | Plastic bag prepared from modified waste tire rubber powder |
| CN112321922A (en) * | 2020-11-09 | 2021-02-05 | 仇帅康 | Regenerated high-molecular elastic material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0146172A1 (en) * | 1983-12-03 | 1985-06-26 | Stamicarbon B.V. | Process for the preparation of impact-resistant thermoplastic polymer mixtures and impact-resistant polymer compositions |
| JPH01165645A (en) * | 1987-12-22 | 1989-06-29 | Mitsui Toatsu Chem Inc | Production of polypropylene resin composition |
| CN101235196A (en) * | 2008-01-14 | 2008-08-06 | 北京兴润达塑胶技术有限公司 | Toughening agent for polyamide and toughened polyamide by the same |
-
2010
- 2010-11-19 CN CN 201010550838 patent/CN102093609B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0146172A1 (en) * | 1983-12-03 | 1985-06-26 | Stamicarbon B.V. | Process for the preparation of impact-resistant thermoplastic polymer mixtures and impact-resistant polymer compositions |
| JPH01165645A (en) * | 1987-12-22 | 1989-06-29 | Mitsui Toatsu Chem Inc | Production of polypropylene resin composition |
| CN101235196A (en) * | 2008-01-14 | 2008-08-06 | 北京兴润达塑胶技术有限公司 | Toughening agent for polyamide and toughened polyamide by the same |
Non-Patent Citations (2)
| Title |
|---|
| 《橡塑技术与装备》 20051231 史新研等 废旧轮胎胶粉的加工及改性 第12-13页 1-6 第31卷, 第11期 2 * |
| 《高分子材料科学与工程》 20030131 连铁军等 电子束辐照对HDPE/PA6共混体系的影响 第172-174页 1-6 第19卷, 第1期 2 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105037865A (en) * | 2015-08-20 | 2015-11-11 | 华南理工大学 | Modified scrap rubber powder as well as preparation method and application thereof |
| CN105885195A (en) * | 2016-05-30 | 2016-08-24 | 蚌埠市维光塑胶制品有限公司 | Plastic bag prepared from modified waste tire rubber powder |
| CN112321922A (en) * | 2020-11-09 | 2021-02-05 | 仇帅康 | Regenerated high-molecular elastic material and preparation method thereof |
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| Publication number | Publication date |
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| CN102093609B (en) | 2012-12-05 |
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