CN103265729A - Photosensitizer synthesis method of photodegradable olefin polymer - Google Patents
Photosensitizer synthesis method of photodegradable olefin polymer Download PDFInfo
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- CN103265729A CN103265729A CN2013101929152A CN201310192915A CN103265729A CN 103265729 A CN103265729 A CN 103265729A CN 2013101929152 A CN2013101929152 A CN 2013101929152A CN 201310192915 A CN201310192915 A CN 201310192915A CN 103265729 A CN103265729 A CN 103265729A
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- density polyethylene
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- olefin polymer
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Abstract
The invention relates to a photosensitizer synthesis method of a photodegradable olefin polymer. The photodegradable olefin polymer comprises the following components in parts by weight: 20-35 parts of anhydrous sodium sulphate, 8-30 parts of starch, 6-10 parts of low-density polyethylene and linear low-density polyethylene, 4-6 parts of ethylene-vinyl acetate monomer copolymer, 0.8-1 part of coupling agent, 0.2-1 part of photosensitizer and 1-3 parts of processing aid. The synthesis method comprises the following steps of: firstly, adding the anhydrous sodium sulphate and the starch to a high-speed mixer to be mixed, heating to 100 DEG C, and exhausting; secondly, adding the coupling agent, and continuously stirring for 20 minutes; finally, adding the low-density polyethylene, the linear low-density polyethylene, the ethylene-vinyl acetate monomer copolymer, the photosensitizer and the processing aid, stirring for 5 minutes, and discharging for later use; and extruding and pelleting standby materials by a co-rotating twin-screw extruder with the length-diameter ratio of 30, thus obtaining the finished product. The synthesis method is simple and low in cost; and the master batches of the product can be used for greatly accelerating the degradation speed of the thin films.
Description
Technical field
The invention belongs to technical field of polymer materials, be specifically related to a kind of photosensitizers synthetic method of smooth degradable olefin polymer.
Background technology
Plastic degradation is difficulty relatively, therefore is badly in need of wanting a kind of method that can promote plastic degradation.
Summary of the invention
The objective of the invention is the deficiency at the aforesaid method proposition, a kind of photosensitizers synthetic method of smooth degradable olefin polymer is provided, by adding this photosensitizers to products such as agricultural film, woven bag, packing bags, after being discarded into the Nature, can degrade fully and disappear, and can not cause secondary pollution to environment.
To achieve these goals, the present invention is achieved by the following technical solutions:
A kind of photosensitizers synthetic method of smooth degradable olefin polymer is characterized in that raw material is counted by weight: 20～35 parts of Sodium sulfate anhydrous.min(99); 8～30 parts of starch; Low Density Polyethylene and linear low density polyethylene 6-10 part; Ethylene-vinyl acetate copolymer 4-6 part; Coupling agent 0.8-1 part; 0.2～1 part of photosensitizers; 1～3 part of processing aid comprises the steps:
(1) powder pre-treatment: according to the parts by weight of described component, earlier Sodium sulfate anhydrous.min(99) and starch are added the high-speed mixer stirring and be heated to 100 ℃, exhaust, next adds coupling agent and continues to stir 20 minutes, add Low Density Polyethylene and linear low density polyethylene, ethylene-vinyl acetate copolymer, photosensitizers and processing aid at last and stirred 5 minutes, discharging is standby;
(2) granulation: be 30 parallel dual-screw extruding machine extruding pelletization with standby material by length-to-diameter ratio, namely obtain finished product.
The invention has the beneficial effects as follows:
1, the present invention adds Sodium sulfate anhydrous.min(99) polyolefin resin to and makes film, after plastics film is discarded into the Nature, on the one hand because the Sodium sulfate anhydrous.min(99) in the film can absorb the moisture in the atmosphere, keep film to be in a kind of state of humidity, accelerate the biodegradation rate of plastics film, on the other hand, Sodium sulfate anhydrous.min(99) is filled in the polyolefin resin, substantially do not change the film original transparency, avoided causing because of the filling of filler the problem of the photodegradable speed decline of film.Therefore Sodium sulfate anhydrous.min(99) is applied to the polyolefine degradable films, has accelerated the degradation speed of film greatly.
Specific embodiments
Method steps:
(1) earlier Sodium sulfate anhydrous.min(99) and starch are added the high-speed mixer stirring and be heated to 100 ℃, exhaust, add coupling agent and continue to stir 20 minutes, add Low Density Polyethylene and linear low density polyethylene, ethylene-vinyl acetate copolymer, photosensitizers and processing aid at last and stirred discharging 5 minutes.
(2) granulation: be 40 parallel dual-screw extruding machine extruding pelletization with standby material by length-to-diameter ratio, namely obtain finished product.
Claims (1)
1. the photosensitizers synthetic method of a light degradable olefin polymer is characterized in that raw material is counted by weight: 20～35 parts of Sodium sulfate anhydrous.min(99); 8～30 parts of starch; Low Density Polyethylene and linear low density polyethylene 6-10 part; Ethylene-vinyl acetate copolymer 4-6 part; Coupling agent 0.8-1 part; 0.2～1 part of photosensitizers; 1～3 part of processing aid comprises the steps:
(1) powder pre-treatment: according to the parts by weight of described component, earlier Sodium sulfate anhydrous.min(99) and starch are added the high-speed mixer stirring and be heated to 100 ℃, exhaust, next adds coupling agent and continues to stir 20 minutes, add Low Density Polyethylene and linear low density polyethylene, ethylene-vinyl acetate copolymer, photosensitizers and processing aid at last and stirred 5 minutes, discharging is standby;
(2) granulation: be 30 parallel dual-screw extruding machine extruding pelletization with standby material by length-to-diameter ratio, namely obtain finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101929152A CN103265729A (en) | 2013-05-22 | 2013-05-22 | Photosensitizer synthesis method of photodegradable olefin polymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101929152A CN103265729A (en) | 2013-05-22 | 2013-05-22 | Photosensitizer synthesis method of photodegradable olefin polymer |
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| Publication Number | Publication Date |
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| CN103265729A true CN103265729A (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101929152A Pending CN103265729A (en) | 2013-05-22 | 2013-05-22 | Photosensitizer synthesis method of photodegradable olefin polymer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110217476A (en) * | 2019-05-31 | 2019-09-10 | 应城市新都化工塑业有限公司 | A kind of waterproof and dampproof woven bag and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000047629A1 (en) * | 1999-02-11 | 2000-08-17 | Grain Processing Corporation | Process and method for hydroxyalkylation of starch and hydroxyalkyl starch prepared accordingly |
| CN1281007A (en) * | 1996-11-25 | 2001-01-24 | 梅秀泉 | Starch-base/acrylic acid series photodegradable and biodegradable resin and its preparing process |
| EP1443057A1 (en) * | 2003-01-30 | 2004-08-04 | National Starch and Chemical Investment Holding Corporation | Rapidly expanding starches with altered crystalline structure |
| CN102504347A (en) * | 2011-11-16 | 2012-06-20 | 和昌（广西）化工有限公司 | Degradable polyolefin masterbatch and production method thereof |
-
2013
- 2013-05-22 CN CN2013101929152A patent/CN103265729A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1281007A (en) * | 1996-11-25 | 2001-01-24 | 梅秀泉 | Starch-base/acrylic acid series photodegradable and biodegradable resin and its preparing process |
| WO2000047629A1 (en) * | 1999-02-11 | 2000-08-17 | Grain Processing Corporation | Process and method for hydroxyalkylation of starch and hydroxyalkyl starch prepared accordingly |
| EP1443057A1 (en) * | 2003-01-30 | 2004-08-04 | National Starch and Chemical Investment Holding Corporation | Rapidly expanding starches with altered crystalline structure |
| CN102504347A (en) * | 2011-11-16 | 2012-06-20 | 和昌（广西）化工有限公司 | Degradable polyolefin masterbatch and production method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110217476A (en) * | 2019-05-31 | 2019-09-10 | 应城市新都化工塑业有限公司 | A kind of waterproof and dampproof woven bag and preparation method thereof |
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Application publication date: 20130828 |