CN102690478B - Preparation method of biodegradable composite material - Google Patents
Preparation method of biodegradable composite material Download PDFInfo
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- CN102690478B CN102690478B CN201210190384.9A CN201210190384A CN102690478B CN 102690478 B CN102690478 B CN 102690478B CN 201210190384 A CN201210190384 A CN 201210190384A CN 102690478 B CN102690478 B CN 102690478B
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Abstract
The invention provides a preparation method of a biodegradable composite material, which includes the following steps of: putting 60-80 parts of polyving akohol, 20-40 parts of poly butylenes succinate, 0.5-3 parts of nano inorganic filling and 1-10 parts of dispersing agent into a high-speed mixer to be mixed at high speed for 20-30mins under the temperature of 60-100 DEG C; putting 100 parts of the mixture, 10-30 parts of composite plasticizer and 0.5-5 parts of processing agent into the high-speed mixer to be mixed under high speed for 15-20mins under 80-120 DEG C; and extruding out and pelleting to get polyvinyl alcohol/poly butylenes succinate biodegradable composite material. Through the preparation method provided by the invention, the biodegradability and the mechanical property of the composite material are improved, the processing performance is improved, the operation process is simple and the raw material is widely available.
Description
technical field:
The present invention relates to biological degradable composite material and goods thereof, be specifically related to the preparation method that polyvinyl alcohol and poly butylene succinate are the biodegradable material of major ingredient.
background technology:
Along with the development of polymer science and the widespread use of macromolecular material, plastics are widely used in the every field of life with advantages such as its abundant kind and outward appearance, good processing characteristics, excellent stability and recoverables.Especially to have brought to our life very large convenient as lunch box, plastics bag, various packing film, mulch film and preservative film etc. for disposable plastics, also produced a large amount of " white garbage " simultaneously.In order to reduce the pollution to environment, development and application completely biodegradable material is very urgent.In current biodegradable material, mainly take the macromolecular materials such as starch, poly(lactic acid), poly butylene succinate, polyoxyethylene glycol, polyacrylate(s) as main.CN102140234A discloses that to take poly(lactic acid) and poly butylene succinate be the preparation method of main biodegradable composite, but though the biodegradability of poly(lactic acid) is good, its price is higher, and mechanical property is undesirable.CN102140234A is disclosed a kind of by polydactyl acid and the compound preparation method who adds again the inorganic filler composite materials such as calcium carbonate of poly butylene succinate, wherein poly butylene succinate is fermented and is made by Biological resources, the source of raw material is harsher like this, is difficult to meet the demand in market.CN102226014A discloses the preparation method of a kind of starch and poly butylene succinate biodegradable material, but the mechanical property of starch is poor, still needs to improve.
summary of the invention:
For above-mentioned problems of the prior art, the object of the present invention is to provide a kind of preparation method of biological degradable composite material, main use polyvinyl alcohol is master, make itself and appropriate poly butylene succinate blending and modifying, not only can improve the biodegradability of matrix material but also can improve processing characteristics.Polyvinyl alcohol source is abundant, and walks non-oil synthetic route, itself has biodegradable performance and good mechanical property.Poly butylene succinate is also Biodegradable material, and its fusing point is lower and have good consistency with polyvinyl alcohol, can improve the thermoplastic processability of polyvinyl alcohol.By dispersant with high efficiency, efficient compound speedup system and processing aid melting, prepare polyvinyl alcohol/poly butylene succinate Biodegradable material.This material has good biodegradability and mechanical property, and operating procedure is simple, and raw material sources are abundant.
The present invention realizes the technical scheme that its object is taked: a kind of preparation method of biological degradable composite material, and its technology and step following (the material umber relating to is below mass fraction):
1) by the poly butylene succinate of the polyvinyl alcohol of 60-80 part, 20-40 part, 0.5-3 part nanometer inorganic filler, 1-10 part dispersion agent 60-100 ℃ of high-speed mixing 20-30min in high-speed mixer.
2) by 1) 100 parts, resulting mixture, composite elasticizer 10-30 part, processing aid 0.5-5 part 80-120 ℃ of high-speed mixing 15-20min in high-speed mixer, be cooled to room temperature.
3) by 2) resulting mixture extrudes in twin screw extruder, granulation, barrel temperature is made as 140-190 ℃, and screw speed is made as 200-500r/min.
The polymerization degree of the polyvinyl alcohol that the method is used is 1700, alcoholysis degree is 88%.
The poly butylene succinate molecular weight that the method is used is more than or equal to 100000.
The nanometer inorganic filler that the method is used is any in nano silicon, organic modification montmonrillonite.
The dispersion agent that the method is used is any in ethylene bis stearamide, stearylamide.
The composite elasticizer that the method is used is the mixture of at least 2 kinds in otan, glycerine, 2-hydroxyl acetamide.
Any that the processing aid that the method is used is dimethyl silicone oil and Zinic stearas.
The present invention's innovative point and improvement effect is compared with prior art as follows:
1), it is main raw material that the present invention uses polyvinyl alcohol and poly butylene succinate, and wherein polyvinyl alcohol is not only biodegradable, and source is enriched, can be made by Non oil-based route.There is in addition good mechanical property, wear-corrosion resistance.
2), the present invention uses poly butylene succinate, because its fusing point is lower and have good consistency with polyvinyl alcohol, polyvinyl alcohol is had to good plastification, is convenient to thermoplastic processing.
3), the present invention has used dispersant with high efficiency, has improved the dispersiveness between polyvinyl alcohol and poly butylene succinate, makes composite materials property better, and degradation behavior more uniform acceleration is faster.
4) the present invention has used otan, 2-hydroxyl acetamide, glycerine high efficiency composition Plasticising system, and polyvinyl alcohol and modified butanediol ester poly succinic acid matrix material thermoplastic processability are improved a lot.
5) the present invention has used appropriate nanometer inorganic filler, has improved the mechanical property of matrix material, and the elongation at break of matrix material is also increased.
embodiment:
For a better understanding of the present invention, below in conjunction with embodiment, further illustrate the present invention, material umber related in each embodiment is mass fraction.
Embodiment 1.
By 70 parts of polyvinyl alcohol, 30 parts of poly butylene succinates, 0.8 part of nano silicon, 5 parts of ethylene bis stearamide 60-100 ℃ of high-speed mixing 20-30min in high-speed mixer.Add again 15 parts of otans, 5 parts of glycerine, 1.5 parts of Zinic stearas 80-110 ℃ of high-speed mixing 15min in high-speed mixer.Be cooled to room temperature extruding pelletization in twin screw extruder, barrel temperature is 140-190 ℃, and screw speed is 310r/min.The tensile strength of gained polyvinyl alcohol/poly butylene succinate biodegradable composite is 34.5Mpa, and elongation at break is 415%.With soil, bury method to its degradation experiment, the cycle is 4 months, and the rate of weight loss of material is 50%
Embodiment 2.
By 60 parts of polyvinyl alcohol, 40 parts of poly butylene succinates, 1 part of inorganic modified polynite, 8 parts of stearylamide 80-100 ℃ of high-speed mixing 30min in high-speed mixer.Add again 10 parts of otans, 10 parts of 2-hydroxyl acetamides, 1.0 parts of Zinic stearass, 0.5 part of dimethyl silicone oil 80-110 ℃ of high-speed mixing 15min in high-speed mixer.Be cooled to room temperature extruding pelletization in twin screw extruder, barrel temperature is 140-190 ℃, and screw speed is 320r/min.The tensile strength of gained polyvinyl alcohol/poly butylene succinate biodegradable composite is 31Mpa, and elongation at break is 475%.With soil, bury method to its degradation experiment, the cycle is 4 months, and the rate of weight loss of material is 45%.
Embodiment 3.
By the polyvinyl alcohol of 80 parts, the poly butylene succinate of 20 parts, 0.5 part of nano silicon, 5 parts of stearylamide 80-100 ℃ of high-speed mixing 30min in high-speed mixer.80-110 ℃ of high-speed mixing 15min in adding 5 parts of otans, 15 parts of 2-hydroxyl acetamides, 0.8 part of Zinic stearas high-speed mixer.Be cooled to room temperature extruding pelletization in twin screw extruder, barrel temperature is 140-190 ℃, and screw speed is 350r/min.The tensile strength of gained polyvinyl alcohol/poly butylene succinate biodegradable composite is 35Mpa, and elongation at break is 402%.With soil, bury method to its degradation experiment, the cycle is 4 months, and the rate of weight loss of material is 43%.
Claims (6)
1. a preparation method for biological degradable composite material, is characterized in that: processing step and the condition of the method are as follows:
1) by the poly butylene succinate of the polyvinyl alcohol of 60-80 part, 20-40 part, 0.5-3 part nanometer inorganic filler, 1-10 part dispersion agent 60-100 ℃ of high-speed mixing 20-30min in high-speed mixer;
2) by 1) 100 parts, resulting mixture, composite elasticizer 10-30 part, processing aid 0.5-5 part 80-120 ℃ of high-speed mixing 15-20min in high-speed mixer, be cooled to room temperature;
3) by 2) resulting mixture extrudes in twin screw extruder, granulation, barrel temperature is made as 140-190 ℃, and screw speed is made as 200-500r/min;
Above material umber is mass parts; Wherein said composite elasticizer is the mixture of at least 2 kinds in otan, glycerine, 2-hydroxyl acetamide.
2. preparation method according to claim 1, the polymerization degree of wherein said polyvinyl alcohol is 1700, alcoholysis degree is 88%.
3. preparation method according to claim 1, wherein said poly butylene succinate, its molecular weight is more than or equal to 100000.
4. according to the preparation method described in claims 1, wherein said nanometer inorganic filler is any in nano silicon, organic modification montmonrillonite.
5. according to the preparation method described in claims 1: wherein said dispersion agent is any in ethylene bis stearamide, stearylamide.
6. preparation method according to claim 1, wherein said processing aid is any of dimethyl silicone oil and Zinic stearas.
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| CN201210190384.9A CN102690478B (en) | 2012-06-11 | 2012-06-11 | Preparation method of biodegradable composite material |
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| CN201210190384.9A CN102690478B (en) | 2012-06-11 | 2012-06-11 | Preparation method of biodegradable composite material |
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| CN102690478B true CN102690478B (en) | 2014-04-02 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735636A (en) * | 2008-11-12 | 2010-06-16 | 福建恒安集团有限公司 | Biodegradation time controlled plastic film and preparation method thereof |
| CN102153838A (en) * | 2011-03-09 | 2011-08-17 | 江苏兴业塑化股份有限公司 | Biodegradable polycarbonate butylene terephthalate composite material and preparation method of biodegradable polycarbonate butylene terephthalate composite material |
| CN102277005A (en) * | 2011-07-07 | 2011-12-14 | 宋旭 | Highly-filled fully-biodegradable packaging material |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735636A (en) * | 2008-11-12 | 2010-06-16 | 福建恒安集团有限公司 | Biodegradation time controlled plastic film and preparation method thereof |
| CN102153838A (en) * | 2011-03-09 | 2011-08-17 | 江苏兴业塑化股份有限公司 | Biodegradable polycarbonate butylene terephthalate composite material and preparation method of biodegradable polycarbonate butylene terephthalate composite material |
| CN102277005A (en) * | 2011-07-07 | 2011-12-14 | 宋旭 | Highly-filled fully-biodegradable packaging material |
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