CN104387731A - Modification recovery method for waste plastic - Google Patents
Modification recovery method for waste plastic Download PDFInfo
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- CN104387731A CN104387731A CN201410430745.1A CN201410430745A CN104387731A CN 104387731 A CN104387731 A CN 104387731A CN 201410430745 A CN201410430745 A CN 201410430745A CN 104387731 A CN104387731 A CN 104387731A
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Abstract
A modification recovery method for waste plastic is disclosed. The following technical scheme is employed: 1) performing crushing, cleaning, dewatering and baking water removal on classified waste plastic to obtain a waste plastic raw material; 2) uniformly mixing the waste plastic raw material and a modifier according to the weight ratio of 95-98:5-2; 3) adding the mixed material into a pelletizer for blending and pelletizing; and 4) performing extrusion molding on master batch by an extruder. The modifier comprises the following compositions in percent by weight: 0-1% of a crosslinking agent, 1-5% of a light stabilizer, 1-5% of a plasticizer, 0.1-0.5% of a lubricant and 1-5% of an anti-oxidant. The beneficial effects comprise that the method has relatively good improvement on recovery of all waste plastic, and enables the performances of products prepared by using recovered plastic as a raw material to be relatively close to those of an original product. The method is simple in technology, low in cost and convenient for industrialized production, has relatively high utility value and can help to obtain relatively high economic profit.
Description
Technical field
The present invention relates to waste plastics recovery field, particularly relate to a kind of method that modified waste plastics reclaims.
Background technology
A large amount of uses of plastics, also bring environmental pollution while being convenient for people to life.In order to solve " white pollution " that plastics bring, research mainly concentrates on degradable plastics and plastics recovery two aspect.Because the R&D costs of degradable plastics are high, can not realize second stage employ, so the more worth exploitation of the research of plastics recovery.After waste plastic is mainly pressed materials classification by existing waste plastics recovery, carry out heating plasticizing again, in process recycled plastic being added to plasticizing always owing to being heated uneven or temperature is too high, the depolymerization of plastics macromolecular chain can be made, original additives for plastics also can lose, greatly destroy the mechanical property of plastics, make the recycled plastic of secondary processing cannot reach the performance index of brand-new material.In prior art, to the modification of recycled plastic, all program is complicated, and cost is higher, is unsuitable for suitability for industrialized production.The present invention carries out simple properties-correcting agent interpolation to the recycled plastic of unlike material, obtains the product of better performance.
Summary of the invention
The object of this invention is to provide a kind of modified waste plastics recovery method.
The present invention is by the following technical solutions: 1) plastic waste of having classified carried out pulverizing, clean, dewater and oven dry dewater after obtain plastic waste raw material; 2) plastic waste raw material is mixed by weight 95 ~ 98:5 ~ 2 ratio with properties-correcting agent; 3) material mixed is added tablets press is blended, granulation; 4) master batch passes through extruder for shaping.
Described plastic waste comprises polyethylene terephthalate (PET), high density polyethylene(HDPE) (HDPE), Low Density Polyethylene (LDPE), polyvinyl chloride (PVC), polypropylene (PP) etc.
Described modifier components with weight ratio represent comprise following: linking agent 0-1%, photostabilizer 1-5%, softening agent 1-5%, lubricant 0.1-0.5%, antioxidant 1-5%.
Described linking agent comprises 2,5-dimethyl-2,5 di-t-butyl hexane peroxide, diethylenetriamine, benzoyl peroxide.
Described photostabilizer comprises 2-(2 '-hydroxyl-5 '-aminomethyl phenyl) benzotriazole, BP-3, benzotriazole.
Described softening agent comprises dioctyl phthalate (DOP), dibutyl phthalate.
Described lubricant comprises polyethylene wax, low-molecular-weight polypropylene, native paraffin, whiteruss.
Described antioxidant comprises 2,2-methylene-bis (4-methyl-6-butylphenol), 2,6-di-tert-butylphenols.
Beneficial effect of the present invention is: modified waste plastics recovery method of the present invention can improve the recyclability of original plastic waste, and have good improvement to various recovery plastic waste, make recycled plastic be that raw material production product performance are out closer to original product.The ratio of each component of improving agent obtains best proportion through experiment, can well supplement the auxiliary agent lost in recycled plastic process.Present invention process is simple, with low cost, is convenient to suitability for industrialized production, has higher practical value, can obtain higher economic profit.
Embodiment
The present invention is by the following technical solutions: 1) plastic waste of having classified carried out pulverizing, clean, dewater and oven dry dewater after obtain plastic waste raw material; 2) plastic waste raw material is mixed by weight 95 ~ 98:5 ~ 2 ratio with properties-correcting agent; 3) material mixed is added tablets press is blended, granulation; 4) master batch passes through extruder for shaping.
Embodiment one:
Useless for recovery PET carried out pulverize, clean, dewater and oven dry dewater after obtain plastic waste raw material, mix by weight 95:5 in improving agent, then add the blended granulation of tablets press, obtain master batch.
Properties-correcting agent each component ratio: 2,5-dimethyl-2,5 di-t-butyl hexane peroxides 0.5%, 2-(2 '-hydroxyl-5 '-aminomethyl phenyl) benzotriazole 2%, dioctyl phthalate (DOP) 2%, polyethylene wax 0.2%, 2,2-methylene-bis (4-methyl-6-butylphenol) 2%.
Embodiment two:
Useless for recovery PET carried out pulverize, clean, dewater and oven dry dewater after obtain plastic waste raw material, mix by weight 98:2 in improving agent, then add the blended granulation of tablets press, obtain master batch.
Properties-correcting agent each component ratio: 2,5-dimethyl-2,5 di-t-butyl hexane peroxides 0.5%, 2-(2 '-hydroxyl-5 '-aminomethyl phenyl) benzotriazole 2%, dioctyl phthalate (DOP) 2%, polyethylene wax 0.2%, 2,2-methylene-bis (4-methyl-6-butylphenol) 2%.
Embodiment three:
Useless for recovery PET carried out pulverize, clean, dewater and oven dry dewater after obtain plastic waste raw material, mix by weight 95:5 in improving agent, then add the blended granulation of tablets press, obtain master batch.
Properties-correcting agent each component ratio: 2,5-dimethyl-2,5 di-t-butyl hexane peroxides 1%, 2-(2 '-hydroxyl-5 '-aminomethyl phenyl) benzotriazole 5%, dioctyl phthalate (DOP) 5%, polyethylene wax 0.5%, 2,2-methylene-bis (4-methyl-6-butylphenol) 5%.
Embodiment four:
Useless for recovery PET carried out pulverize, clean, dewater and oven dry dewater after obtain plastic waste raw material, mix by weight 98:2 in improving agent, then add the blended granulation of tablets press, obtain master batch.
Properties-correcting agent each component ratio: 2,5-dimethyl-2,5 di-t-butyl hexane peroxides 1%, 2-(2 '-hydroxyl-5 '-aminomethyl phenyl) benzotriazole 5%, dioctyl phthalate (DOP) 5%, polyethylene wax 0.5%, 2,2-methylene-bis (4-methyl-6-butylphenol) 5%.
Testing performance index is carried out to the recycled PET that embodiment one to four produces:
Carry out performance test to embodiments of the invention, result shows that carrying out to the PET reclaimed the product that secondary processing obtains according to the method described in the present invention compares with brand-new material, and property indices all meets national standard.
Embodiment five:
Useless for recovery LDPE plastics carried out pulverize, clean, dewater and oven dry dewater after obtain plastic waste raw material, mix by weight 95:5 in improving agent, then add the blended granulation of tablets press, obtain master batch.
Properties-correcting agent each component ratio: benzoyl peroxide 0.5%, BP-3 2%, dioctyl phthalate (DOP) 2%, whiteruss 0.2%, 2,6-di-tert-butylphenol 2%.
Embodiment six:
Useless for recovery LDPE plastics carried out pulverize, clean, dewater and oven dry dewater after obtain plastic waste raw material, mix by weight 98:2 in improving agent, then add the blended granulation of tablets press, obtain master batch.
Properties-correcting agent each component ratio: benzoyl peroxide 0.5%, BP-3 2%, dioctyl phthalate (DOP) 2%, whiteruss 0.2%, 2,6-di-tert-butylphenol 2%.
Embodiment seven:
Useless for recovery LDPE plastics carried out pulverize, clean, dewater and oven dry dewater after obtain plastic waste raw material, mix by weight 95:5 in improving agent, then add the blended granulation of tablets press, obtain master batch.
Properties-correcting agent each component ratio: benzoyl peroxide 1%, BP-3 5%, dioctyl phthalate (DOP) 5%, whiteruss 0.5%, 2,6-di-tert-butylphenol 5%.
Embodiment eight:
Useless for recovery LDPE plastics carried out pulverize, clean, dewater and oven dry dewater after obtain plastic waste raw material, mix by weight 98:2 in improving agent, then add the blended granulation of tablets press, obtain master batch.
Properties-correcting agent each component ratio: benzoyl peroxide 1%, BP-3 5%, dioctyl phthalate (DOP) 5%, whiteruss 0.5%, 2,6-di-tert-butylphenol 5%.
Testing performance index is carried out to the returned product that embodiment five to eight produces:
Carry out performance test to embodiments of the invention, result shows that carrying out to the LDPE reclaimed the product that secondary processing obtains according to the method described in the present invention compares with brand-new material, and property indices all meets national standard.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (6)
1. a modified waste plastics recovery method, technical scheme is as follows: 1) plastic waste of having classified carried out pulverizing, clean, dewater and oven dry dewater after obtain plastic waste raw material; 2) plastic waste raw material is mixed by weight 95 ~ 98:5 ~ 2 ratio with properties-correcting agent; 3) material mixed is added tablets press is blended, granulation; 4) master batch passes through extruder for shaping;
Described plastic waste comprises polyethylene terephthalate (PET), high density polyethylene(HDPE) (HDPE), Low Density Polyethylene (LDPE), polyvinyl chloride (PVC), polypropylene (PP) etc.;
Described modifier components with weight ratio represent comprise following: linking agent 0-1%, photostabilizer 1-5%, softening agent 1-5%, lubricant 0.1-0.5%, antioxidant 1-5%.
2. a kind of modified waste plastics recovery method according to claim 1, is characterized in that, described linking agent comprises 2,5-dimethyl-2,5 di-t-butyl hexane peroxide, diethylenetriamine, benzoyl peroxide.
3. a kind of modified waste plastics recovery method according to claim 1, is characterized in that, described photostabilizer comprises 2-(2 '-hydroxyl-5 '-aminomethyl phenyl) benzotriazole, BP-3, benzotriazole.
4. a kind of modified waste plastics recovery method according to claim 1, it is characterized in that, described softening agent comprises dioctyl phthalate (DOP), dibutyl phthalate.
5. a kind of modified waste plastics recovery method according to claim 1, it is characterized in that, described lubricant comprises polyethylene wax, low-molecular-weight polypropylene, native paraffin, whiteruss.
6. a kind of modified waste plastics recovery method according to claim 1, is characterized in that, described antioxidant comprises 2,2-methylene-bis (4-methyl-6-butylphenol), 2,6-di-tert-butylphenols.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410430745.1A CN104387731A (en) | 2014-08-28 | 2014-08-28 | Modification recovery method for waste plastic |
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| CN201410430745.1A CN104387731A (en) | 2014-08-28 | 2014-08-28 | Modification recovery method for waste plastic |
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| CN104387731A true CN104387731A (en) | 2015-03-04 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419062A (en) * | 2015-12-30 | 2016-03-23 | 天津军星管业集团有限公司 | Material for anti-aging peroxide crosslinking polyethylene pipe |
| CN105670240A (en) * | 2016-01-20 | 2016-06-15 | 中塑联新材料科技湖北有限公司 | High-strength injection molding material prepared from waste polyester bottle flakes and waste polypropylene injection molding materials and preparation method thereof |
| CN106637465A (en) * | 2016-12-08 | 2017-05-10 | 安徽环美刷业有限公司 | Easily degradable and regenerative modified PP (polypropylene) brush wire and preparation method thereof |
| CN107151459A (en) * | 2017-06-08 | 2017-09-12 | 巢湖市天宇渔具有限公司 | A kind of processing method of waste and old fishing net |
| CN107236243A (en) * | 2017-07-25 | 2017-10-10 | 陕西路圣里德太阳能研究院有限公司 | Speculum and preparation method thereof |
| CN107775840A (en) * | 2016-08-27 | 2018-03-09 | 苏州市苏宏塑料有限公司 | Plastic master batch production technology and its intermediate material |
| CN108201709A (en) * | 2018-02-22 | 2018-06-26 | 江苏美能膜材料科技有限公司 | A kind of extracting method of compound plasticizer recycling |
| CN108948524A (en) * | 2018-06-22 | 2018-12-07 | 苏州上车新材料科技有限公司 | MODIFIED PP/PET alloy die casting collet and preparation method thereof |
| CN109721962A (en) * | 2017-10-30 | 2019-05-07 | 江苏瑞凌新能源科技有限公司 | A kind of high light transmission car light lampshade |
| CN112143250A (en) * | 2020-10-22 | 2020-12-29 | 湖南映宏新材料股份有限公司 | Harmless treatment method for plastic-based waste |
| CN112778788A (en) * | 2020-12-31 | 2021-05-11 | 广东乔艺塑胶有限公司 | Composition for recycling waste plastics by using ocean and preparation method thereof |
-
2014
- 2014-08-28 CN CN201410430745.1A patent/CN104387731A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419062A (en) * | 2015-12-30 | 2016-03-23 | 天津军星管业集团有限公司 | Material for anti-aging peroxide crosslinking polyethylene pipe |
| CN105670240A (en) * | 2016-01-20 | 2016-06-15 | 中塑联新材料科技湖北有限公司 | High-strength injection molding material prepared from waste polyester bottle flakes and waste polypropylene injection molding materials and preparation method thereof |
| CN107775840A (en) * | 2016-08-27 | 2018-03-09 | 苏州市苏宏塑料有限公司 | Plastic master batch production technology and its intermediate material |
| CN107775840B (en) * | 2016-08-27 | 2019-09-06 | 苏州市苏宏塑料有限公司 | Plastic master batch production technology and its intermediate material |
| CN106637465A (en) * | 2016-12-08 | 2017-05-10 | 安徽环美刷业有限公司 | Easily degradable and regenerative modified PP (polypropylene) brush wire and preparation method thereof |
| CN107151459A (en) * | 2017-06-08 | 2017-09-12 | 巢湖市天宇渔具有限公司 | A kind of processing method of waste and old fishing net |
| CN107236243A (en) * | 2017-07-25 | 2017-10-10 | 陕西路圣里德太阳能研究院有限公司 | Speculum and preparation method thereof |
| CN109721962A (en) * | 2017-10-30 | 2019-05-07 | 江苏瑞凌新能源科技有限公司 | A kind of high light transmission car light lampshade |
| CN108201709A (en) * | 2018-02-22 | 2018-06-26 | 江苏美能膜材料科技有限公司 | A kind of extracting method of compound plasticizer recycling |
| CN108948524A (en) * | 2018-06-22 | 2018-12-07 | 苏州上车新材料科技有限公司 | MODIFIED PP/PET alloy die casting collet and preparation method thereof |
| CN112143250A (en) * | 2020-10-22 | 2020-12-29 | 湖南映宏新材料股份有限公司 | Harmless treatment method for plastic-based waste |
| CN112778788A (en) * | 2020-12-31 | 2021-05-11 | 广东乔艺塑胶有限公司 | Composition for recycling waste plastics by using ocean and preparation method thereof |
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Application publication date: 20150304 |