CN104151514B - Phosphate ester starch-urea improves resol copolymerization film formulation and preparation technology thereof - Google Patents
Phosphate ester starch-urea improves resol copolymerization film formulation and preparation technology thereof Download PDFInfo
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Abstract
Phosphate ester starch-urea improves resol copolymerization film and preparation method thereof, and its composition mainly comprises: Sodium phosphate dibasic 15 parts, W-Gum 100 parts, phenol 99 parts, 101 parts, formaldehyde, 8 parts, caustic soda, 120 parts, urea, 15 parts, ammonium hydroxide.200 parts, water.Regulated by mixing, then with extruding through twin screw extruder, water-cooled, obtained mother raw material degradable after cutting, namely obtain aimed thin film goods finally by inflation film manufacturing machine blown film.The invention has the beneficial effects as follows: starch source of the present invention is abundant, cheap, environmentally friendly; And obtained plastics film intensity is high, production cost is low, biodegradable, effectively can alleviate white pollution problems.
Description
Technical field:
The present invention relates to plastics film production technical field, be specifically related to a kind of phosphate ester starch-urea and improve resol copolymerization film and preparation method thereof.
Background technology:
Flourish along with plastics industry, the environmental pollution that waste plastic film rubbish brings also is on the rise, and white pollution becomes the environmental problem attracted attention in the whole world.Therefore, people must go into overdrive to develop biological degredation plastic film, administer plastic refuse and bring pollution problem to environment.
Starch is a kind of abundance, cheap natural macromolecular material, also be a kind of inexhaustible renewable resources, it can be biodegradable in a variety of environmental conditions, final degraded product carbonic acid gas and water by the photosynthesis recirculation of plant, can not cause any pollution to environment.But containing great amount of hydroxy group on starch molecular chain, easily in molecular chain, forming hydrogen bond outward, therefore indissoluble, infusibility, and poor water resistance with molecular chain, a chance water or long-term storage easily absorb moisture in damp atmosphere, affect its stability.
Summary of the invention:
Technical problem to be solved by this invention is to provide that a kind of technique is simple, production cost is low and environment amenable phosphate ester starch-urea improves resol copolymerization film and preparation method thereof.
Technical problem to be solved by this invention adopts following technical scheme to realize:
Phosphate ester starch-urea improves resol copolymerization film formulation, it is characterized in that: its composition mainly comprises:
Phosphate ester starch-urea improves resol copolymerization thin film preparation process, it is characterized in that: specifically comprise the following steps:
Step 1: water and Sodium phosphate dibasic are put into steel basin by proportioning, 60 DEG C are warming up under constantly stirring, disodium phosphate soln is dissolved completely, add in reactor after W-Gum and disodium phosphate soln fully being mixed by proportioning, material stirs intensification 70-80 DEG C in the reactor, when discharge reduction to less than 20% time, be warming up to 150-200 DEG C, starch and Sodium phosphate dibasic are reacted, when the viscosity of material is greater than 50Pas, termination reaction, cooling discharge, obtains phosphate ester starch.
Step 2: by formaldehyde and phenol mixing;
Step 3: join in bottle by the mixed solvent in step 2 and the phosphate ester starch in step 1, stirs, 5-9 hour;
Step 4: heat up again, adds caustic soda and urea, keeps reaction 1 hour at 90-100 DEG C;
Step 5: add and pH value 6-7 is regulated to ammonium hydroxide, termination reaction, cooling;
Step 6: then with extruding through twin screw extruder, water-cooled, obtained mother raw material degradable after cutting, namely obtain aimed thin film goods finally by inflation film manufacturing machine blown film.
The invention has the beneficial effects as follows: starch source of the present invention is abundant, cheap, environmentally friendly; And obtained plastics film intensity is high, production cost is low, biodegradable, effectively can alleviate white pollution problems.
Embodiment:
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.
Specific embodiment: phosphate ester starch-urea improves resol copolymerization film formulation, and its composition mainly comprises: Sodium phosphate dibasic 15 parts, W-Gum 100 parts, phenol 99 parts, 101 parts, formaldehyde, 8 parts, caustic soda, 120 parts, urea, 15 parts, ammonium hydroxide.200 parts, water.
Phosphate ester starch-urea improves resol copolymerization thin film preparation process, specifically comprises the following steps:
Step 1: water and Sodium phosphate dibasic are put into steel basin by proportioning, 60 DEG C are warming up under constantly stirring, disodium phosphate soln is dissolved completely, add in reactor after W-Gum and disodium phosphate soln fully being mixed by proportioning, material stirs intensification 70-80 DEG C in the reactor, when discharge reduction to less than 20% time, be warming up to 150-200 DEG C, starch and Sodium phosphate dibasic are reacted, when the viscosity of material is greater than 50Pas, termination reaction, cooling discharge, obtains phosphate ester starch.
Step 2: by formaldehyde and phenol mixing;
Step 3: join in bottle by the mixed solvent in step 2 and the phosphate ester starch in step 1, stirs, 5-9 hour;
Step 4: heat up again, adds caustic soda and urea, keeps reaction 1 hour at 90-100 DEG C;
Step 5: add and pH value 6-7 is regulated to ammonium hydroxide, termination reaction, cooling;
Step 6: then with extruding through twin screw extruder, water-cooled, obtained mother raw material degradable after cutting, namely obtain aimed thin film goods finally by inflation film manufacturing machine blown film.
The phosphate ester starch prepared embodiment-urea improves the test that resol copolymerization film carries out mechanical property, water resistance and degradation property, testing method and result as follows:
Measure tensile strength and the elongation at break of film according to GB/T13022-1991, measure the water-intake rate of film according to GB/T1034-2008.
Soil buries degradation experiment: get a moisture eliminator, lay the thick earth of 10cm wherein, water-activity is regulated to be 15%, film is cut into 5cm × 2cm size, dry at 90 DEG C to constant weight, then interval is buried in the earth uniformly, film is taken out every 5d, with distilled water flushing surface, then dry to constant weight at 90 DEG C, calculate its rate of weight loss.
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Tensile strength (MPa) | 42.12 | 35.18 | 38.14 |
| Elongation at break (%) | 123.21 | 150.55 | 141.72 |
| Water regain (%) | 19％ | 23％ | 25％ |
| Degradation time (moon) | 4.8 | 4.7 | 4.5 |
As can be seen from the above table, the thin film mechanical performance that the present invention obtains is better, and water regain is suitable, and can be completely degraded at room temperature 5 months, is far superior to degradation time 9-15 month of common degradable film, thus reduces the pollution to environment.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (2)
1. phosphate ester starch-urea improves resol copolymerization film, it is characterized in that: its composition mainly comprises:
2. phosphate ester starch-urea improves resol copolymerization thin film preparation process, it is characterized in that: specifically comprise the following steps:
Step 1: water and Sodium phosphate dibasic are put into steel basin by proportioning, 60 DEG C are warming up under constantly stirring, disodium phosphate soln is dissolved completely, add in reactor after W-Gum and disodium phosphate soln fully being mixed by proportioning, material stirs intensification 70-80 DEG C in the reactor, when discharge reduction to less than 20% time, be warming up to 150-200 DEG C, starch and Sodium phosphate dibasic are reacted, when the viscosity of material is greater than 50Pas, termination reaction, cooling discharge, obtains phosphate ester starch;
Step 2: by formaldehyde and phenol mixing;
Step 3: join in bottle by the mixed mixture in step 2 and the phosphate ester starch in step 1, stirs, 5-9 hour;
Step 4: heat up again, adds caustic soda and urea, keeps reaction 1 hour at 90-100 DEG C;
Step 5: add ammonium hydroxide adjust ph 6-7, termination reaction, cooling;
Step 6: then with extruding through twin screw extruder, water-cooled, obtained mother raw material degradable after cutting, namely obtain aimed thin film goods finally by inflation film manufacturing machine blown film.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410342459.XA CN104151514B (en) | 2014-07-17 | 2014-07-17 | Phosphate ester starch-urea improves resol copolymerization film formulation and preparation technology thereof |
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| CN201410342459.XA CN104151514B (en) | 2014-07-17 | 2014-07-17 | Phosphate ester starch-urea improves resol copolymerization film formulation and preparation technology thereof |
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| CN104151514A CN104151514A (en) | 2014-11-19 |
| CN104151514B true CN104151514B (en) | 2015-12-09 |
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| CN111727851A (en) * | 2019-03-22 | 2020-10-02 | 东莞市乐为现代农业科技有限公司 | Naturally degradable plant seedling raising substrate and manufacturing method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101284922A (en) * | 2008-05-20 | 2008-10-15 | 安徽德琳环保发展（集团）有限公司 | Biological degradation plastic with high starch content for blowing molding and method for preparing same |
| CN103265730A (en) * | 2013-05-23 | 2013-08-28 | 苏州富通高新材料科技股份有限公司 | Degradable film containing starch and preparation method of degradable film |
| CN103601865A (en) * | 2013-11-27 | 2014-02-26 | 山东圣泉化工股份有限公司 | Starch modified phenolic resin and application thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101284922A (en) * | 2008-05-20 | 2008-10-15 | 安徽德琳环保发展（集团）有限公司 | Biological degradation plastic with high starch content for blowing molding and method for preparing same |
| CN103265730A (en) * | 2013-05-23 | 2013-08-28 | 苏州富通高新材料科技股份有限公司 | Degradable film containing starch and preparation method of degradable film |
| CN103601865A (en) * | 2013-11-27 | 2014-02-26 | 山东圣泉化工股份有限公司 | Starch modified phenolic resin and application thereof |
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