CN103205023A - Preparation method of bamboo powder/white carbon black composite reinforced starch-based degradable plastic - Google Patents
Preparation method of bamboo powder/white carbon black composite reinforced starch-based degradable plastic Download PDFInfo
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- CN103205023A CN103205023A CN2013101326348A CN201310132634A CN103205023A CN 103205023 A CN103205023 A CN 103205023A CN 2013101326348 A CN2013101326348 A CN 2013101326348A CN 201310132634 A CN201310132634 A CN 201310132634A CN 103205023 A CN103205023 A CN 103205023A
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Abstract
The invention provides a preparation method of bamboo powder/white carbon black composite reinforced starch-based degradable plastic. The preparation method comprises the following steps of: 1, weighing starch, bamboo powder, white carbon black, polyvinyl alcohol, a plasticizer, compound additive and water in parts by weight; 2, adding various weighed materials into a mixer and uniformly mixing to obtain a mixture; and 3, adding the mixture into a double-screw extruder to extrude to obtain the bamboo powder/white carbon black composite reinforced starch-based degradable plastic. According to the preparation method, raw materials are well-sourced, the preparation process is simple, and the preparation method is suitable for large-scale industrial production. The bamboo powder/white carbon black composite reinforced starch-based degradable plastic prepared by adopting the preparation method has favorable mechanical property, heat resistance and biodegradability and has important meanings in terms of environment protection, resource development and the like.
Description
Technical field
The invention belongs to the degradation material preparing technical field, be specifically related to the preparation method of a kind of bamboo powder/white carbon black composite reinforcing starch base degradable plastic.
Background technology
The high speed development of plastics industry brings great convenience for people's productive life, but " white pollution " problem that is caused by plastic refuse is also serious day by day, and the problem of environmental pollution that the plastics of difficult degradation cause more and more is subjected to concern and the attention of countries in the world.Using degradable plastics is a fundamental way that solves plastic pollution.In the research process of seeking the pollution of degradable plastics solution plastic garbage, be that the biodegradable plastic that basic material obtains has obtained development rapidly with starch.In bio-degradable plastics, this natural high molecular substance of starch have wide material sources, cheap, regeneration period short, can be under multiple environment complete biodegradable, can not produce advantage such as any pollution to environment, be the good natural biological degradable material of development prospect.But mechanical property and the resistance toheat of starch plastics are lower, it is applied be subjected to considerable restraint.
Adding bat wool in plastics is a kind of effective ways that improve the plastics machinery performance.The bamboo powder is the powder that obtains after bamboo is pulverized, and has fibrous morphological structure is arranged, and uses as the reinforcement component so it can add in the plastic or other material.Bamboo powder wide material sources, cheap, the structure of its natural fiber has biological degradability.The chemical name of white carbon black is hydration soft silica or colloid silica, it is the fine meal of a kind of white, safety non-toxic, excellent properties such as have that porousness, internal surface area are big, polymolecularity, light weight, chemical stability are good, high temperature resistant, do not burn, electrical insulating property is good mainly is used as the packing strengthening agent of products such as rubber, plastics.
So far, still find no the preparation method of closing bamboo powder/white carbon black composite reinforcing starch base degradable plastic and be seen in report.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned the deficiencies in the prior art, and the preparation method of a kind of bamboo powder/white carbon black composite reinforcing starch base degradable plastic is provided.Adopt the bamboo powder/white carbon black composite reinforcing starch base degradable plastic of this method preparation to have favorable mechanical performance, resistance toheat and biodegradability; be easy to be processed into all types of plastic goods with biological degradability; can substitute the plastics of existing contaminate environment and the plastics of bio-refractory, all significant at aspects such as environment protection and developments of resources.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the preparation method of a kind of bamboo powder/white carbon black composite reinforcing starch base degradable plastic is characterized in that this method may further comprise the steps:
Step 1, take by weighing following various raw material by weight: 40～70 parts of starch, 10～20 parts in bamboo powder, 5～15 parts of white carbon blacks, 5～10 parts of polyvinyl alcohol, 5～10 parts in softening agent, 1～3 part of composite assistant, 3～6 parts in water; Described composite assistant by polyethylene wax, stearic acid, white oil and coupling agent by mass ratio (27～32): (27～32): (27～32): (8～12) mixed preparing forms; Described softening agent is dibasic alcohol or trivalent alcohol; Described coupling agent is silane coupling agent;
Mix in step 2, the starch with after taking by weighing in the step 1, bamboo powder, white carbon black, polyvinyl alcohol, softening agent, composite assistant and the water adding mixing machine, obtain compound;
Step 3, compound described in the step 2 being added in the twin screw extruder, is to extrude under 140 ℃～170 ℃ the condition at extrusion temperature, obtains bamboo powder/white carbon black composite reinforcing starch base degradable plastic.
The preparation method of above-mentioned a kind of bamboo powder/white carbon black composite reinforcing starch base degradable plastic is characterized in that dibasic alcohol described in the step 1 is ethylene glycol, 1,2-propylene glycol or 1, and ammediol, described trivalent alcohol are glycerol.
The preparation method of above-mentioned a kind of bamboo powder/white carbon black composite reinforcing starch base degradable plastic is characterized in that described silane coupling agent is silane resin acceptor kh-550, silane coupling agent YDH-151 or silane coupling agent KH-570.
The present invention compared with prior art has the following advantages:
1, materials such as bamboo powder of the present invention/white carbon black composite reinforcing starch base degradable plastic employing starch, bamboo powder, white carbon black, polyvinyl alcohol are that feedstock production obtains, cost of material is cheap, wide material sources are easy to get, resource is is reasonably develop and useedd, had significant social and be worth and economic worth.
2, bamboo powder of the present invention/white carbon black composite reinforcing starch base degradable plastic can be in twin screw extruder a step finish, the simple and easy handling of preparation technology is fit to large-scale industrial production.
3, the present invention adopts wide material sources, cheap bamboo powder as strengthening agent, take full advantage of the premium properties of its reticular fiber structure and easy degraded thereof, easy-formation, prepare good mechanical property, starch base degradable plastic that biological degradability is good, widened the purposes of bamboo powder, made resource obtain reasonably develop and useining; Simultaneously, contain compositions such as Mierocrystalline cellulose in the bamboo powder, not only reinforcement the mechanical property of starch base degradable plastic, and make the easier erosion that is subjected to microorganism in the soil of plastics, thereby obtain faster degraded, especially degradation rate is rapider in wet environment, the degradation property of the bamboo powder that finally significantly improves/white carbon black composite reinforcing starch base degradable plastic.
4, the present invention adopts white carbon black to make strengthening agent, and performances such as the peculiar Ultrastrength adhesive power of white carbon black, tear strength, thermotolerance can significantly improve mechanical property and the resistance toheat of bamboo powder/white carbon black composite reinforcing starch base.
5, the present invention adds polyvinyl alcohol and can increase bonding force between each raw material; The adding softening agent can increase plasticity-and the processing fluidity of compound; The adding composite assistant can increase the lubricity of compound, improves the interface performance between each raw material, improves surface smoothness and the processing forming of material.
6, the bamboo powder/white carbon black composite reinforcing starch base degradable plastic of the present invention's preparation has favorable mechanical performance, resistance toheat and biodegradability; be easy to be processed into all types of plastic goods with biological degradability; can substitute the plastics of existing contaminate environment and the plastics of bio-refractory, all significant at aspects such as environment protection and developments of resources.
Be described in further detail below in conjunction with the present invention of embodiment.
Embodiment
Embodiment 1
The preparation method of present embodiment bamboo powder/white carbon black composite reinforcing starch base degradable plastic may further comprise the steps:
Step 1, take by weighing following various raw material by weight: 40 parts of starch, 15 parts in bamboo powder, 6 parts of white carbon blacks, 8 parts of polyvinyl alcohol, 6 parts in softening agent, 1.2 parts of composite assistants, 4 parts in water; Described composite assistant by polyethylene wax, stearic acid, white oil and coupling agent by mass ratio 30: 30: 30: 10 mixed preparing form; Described softening agent is trivalent alcohol, and preferred trivalent alcohol is glycerol; Described coupling agent is silane coupling agent, and preferred silane coupling agent is silane resin acceptor kh-550 (chemical name is the 3-aminopropyltriethoxywerene werene);
Mix in step 2, the starch with after taking by weighing in the step 1, bamboo powder, white carbon black, polyvinyl alcohol, softening agent, composite assistant and the water adding mixing machine, obtain compound;
Step 3, compound described in the step 2 is added in the twin screw extruder, be followed successively by in the temperature of the feeding section of twin screw extruder, melt zone, homogenizing zone, discharge zone under 140 ℃, 160 ℃, 170 ℃, 160 ℃ the condition and extrude, obtain the extrudate of bamboo powder/white carbon black composite reinforcing starch base degradable plastic of the about 3mm of diameter.
The initial performance of the bamboo powder/white carbon black composite reinforcing starch base degradable plastic of present embodiment preparation and in slowly drained soil, see Table 1 through the performance after the degraded in 30 days.
Embodiment 2
The preparation method of present embodiment bamboo powder/white carbon black composite reinforcing starch base degradable plastic may further comprise the steps:
Step 1, take by weighing following various raw material by weight: 50 parts of starch, 10 parts in bamboo powder, 5 parts of white carbon blacks, 5 parts of polyvinyl alcohol, 5 parts in softening agent, 1 part of composite assistant, 3 parts in water; Described composite assistant by polyethylene wax, stearic acid, white oil and coupling agent by mass ratio 28: 32: 27: 12 mixed preparing form; Described softening agent is trivalent alcohol, and preferred trivalent alcohol is glycerol; Described coupling agent is silane coupling agent, and preferred silane coupling agent is that silane coupling agent KH-570(chemical name is the 3-methacryloxypropyl trimethoxy silane);
Mix in step 2, the starch with after taking by weighing in the step 1, bamboo powder, white carbon black, polyvinyl alcohol, softening agent, composite assistant and the water adding mixing machine, obtain compound;
Step 3, compound described in the step 2 is added in the twin screw extruder, be followed successively by in the temperature of the feeding section of twin screw extruder, melt zone, homogenizing zone, discharge zone under 140 ℃, 150 ℃, 170 ℃, 160 ℃ the condition and extrude, obtain the extrudate of bamboo powder/white carbon black composite reinforcing starch base degradable plastic of the about 3mm of diameter.
The initial performance of the bamboo powder/white carbon black composite reinforcing starch base degradable plastic of present embodiment preparation and in slowly drained soil, see Table 1 through the performance after the degraded in 30 days.
Embodiment 3
The preparation method of present embodiment bamboo powder/white carbon black composite reinforcing starch base degradable plastic may further comprise the steps:
Step 1, take by weighing following various raw material by weight: 60 parts of starch, 12 parts in bamboo powder, 9 parts of white carbon blacks, 6 parts of polyvinyl alcohol, 6 parts in softening agent, 2 parts of composite assistants, 6 parts in water; Described composite assistant by polyethylene wax, stearic acid, white oil and coupling agent by mass ratio 30: 28: 32: 8 mixed preparing form; Described softening agent is dibasic alcohol, and preferred dibasic alcohol is ethylene glycol; Described coupling agent is silane coupling agent, and preferred silane coupling agent is that silane coupling agent YDH-151(chemical name is vinyltriethoxysilane);
Mix in step 2, the starch with after taking by weighing in the step 1, bamboo powder, white carbon black, polyvinyl alcohol, softening agent, composite assistant and the water adding mixing machine, obtain compound;
Step 3, compound described in the step 2 is added in the twin screw extruder, be followed successively by in the temperature of the feeding section of twin screw extruder, melt zone, homogenizing zone, discharge zone under 140 ℃, 160 ℃, 170 ℃, 160 ℃ the condition and extrude, obtain the extrudate of bamboo powder/white carbon black composite reinforcing starch base degradable plastic of the about 3mm of diameter.
The initial performance of the bamboo powder/white carbon black composite reinforcing starch base degradable plastic of present embodiment preparation and in slowly drained soil, see Table 1 through the performance after the degraded in 30 days.
Embodiment 4
The preparation method of present embodiment bamboo powder/white carbon black composite reinforcing starch base degradable plastic may further comprise the steps:
Step 1, take by weighing following various raw material by weight: 65 parts of starch, 18 parts in bamboo powder, 15 parts of white carbon blacks, 10 parts of polyvinyl alcohol, 7 parts in softening agent, 3 parts of composite assistants, 5 parts in water; Described composite assistant by polyethylene wax, stearic acid, white oil and coupling agent by mass ratio 32: 27: 27: 8 mixed preparing form; Described softening agent is dibasic alcohol, and preferred dibasic alcohol is ethylene glycol; Described coupling agent is silane coupling agent, and preferred silane coupling agent is silane resin acceptor kh-550 (chemical name is the 3-aminopropyl triethoxysilane);
Mix in step 2, the starch with after taking by weighing in the step 1, bamboo powder, white carbon black, polyvinyl alcohol, softening agent, composite assistant and the water adding mixing machine, obtain compound;
Step 3, compound described in the step 2 is added in the twin screw extruder, be followed successively by in the temperature of the feeding section of twin screw extruder, melt zone, homogenizing zone, discharge zone under 140 ℃, 150 ℃, 170 ℃, 160 ℃ the condition and extrude, obtain the extrudate of bamboo powder/white carbon black composite reinforcing starch base degradable plastic of the about 3mm of diameter.
The initial performance of the bamboo powder/white carbon black composite reinforcing starch base degradable plastic of present embodiment preparation and in slowly drained soil, see Table 1 through the performance after the degraded in 30 days.
Embodiment 5
The preparation method of present embodiment bamboo powder/white carbon black composite reinforcing starch base degradable plastic may further comprise the steps:
Step 1, take by weighing following various raw material by weight: 70 parts of starch, 20 parts in bamboo powder, 12 parts of white carbon blacks, 7 parts of polyvinyl alcohol, 10 parts in softening agent, 2.5 parts of composite assistants, 5 parts in water; Described composite assistant by polyethylene wax, stearic acid, white oil and coupling agent by mass ratio 30: 30: 30: 8 mixed preparing form; Described softening agent is dibasic alcohol, and preferred dibasic alcohol is 1,2-propylene glycol; Described coupling agent is silane coupling agent, and preferred silane coupling agent is silane resin acceptor kh-550 (chemical name is the 3-aminopropyl triethoxysilane);
Mix in step 2, the starch with after taking by weighing in the step 1, bamboo powder, white carbon black, polyvinyl alcohol, softening agent, composite assistant and the water adding mixing machine, obtain compound;
Step 3, compound described in the step 2 is added in the twin screw extruder, be followed successively by in the temperature of the feeding section of twin screw extruder, melt zone, homogenizing zone, discharge zone under 140 ℃, 160 ℃, 170 ℃, 150 ℃ the condition and extrude, obtain the extrudate of bamboo powder/white carbon black composite reinforcing starch base degradable plastic of the about 3mm of diameter.
The initial performance of the bamboo powder/white carbon black composite reinforcing starch base degradable plastic of present embodiment preparation and in slowly drained soil, see Table 1 through the performance after the degraded in 30 days.
Embodiment 6
The preparation method of present embodiment bamboo powder/white carbon black composite reinforcing starch base degradable plastic may further comprise the steps:
Step 1, take by weighing following various raw material by weight: 60 parts of starch, 15 parts in bamboo powder, 12 parts of white carbon blacks, 8 parts of polyvinyl alcohol, 7 parts in softening agent, 2 parts of composite assistants, 5 parts in water; Described composite assistant by polyethylene wax, stearic acid, white oil and coupling agent by mass ratio 27: 27: 27: 12 mixed preparing form; Described softening agent is dibasic alcohol, and preferred dibasic alcohol is 1, ammediol; Described coupling agent is silane coupling agent, and preferred silane coupling agent is that silane coupling agent KH-570(chemical name is the 3-methacryloxypropyl trimethoxy silane);
Mix in step 2, the starch with after taking by weighing in the step 1, bamboo powder, white carbon black, polyvinyl alcohol, softening agent, composite assistant and the water adding mixing machine, obtain compound;
Step 3, compound described in the step 2 is added in the twin screw extruder, be followed successively by in the temperature of the feeding section of twin screw extruder, melt zone, homogenizing zone, discharge zone under 140 ℃, 160 ℃, 170 ℃, 160 ℃ the condition and extrude, obtain the extrudate of bamboo powder/white carbon black composite reinforcing starch base degradable plastic of the about 3mm of diameter.
The initial performance of the bamboo powder/white carbon black composite reinforcing starch base degradable plastic of present embodiment preparation and in slowly drained soil, see Table 1 through the performance after the degraded in 30 days.
Performance comparison result before and after the degradable plastics degraded of table 1 the present invention preparation
As shown in Table 1, the initial tensile strength of the bamboo powder/white carbon black composite reinforcing starch base degradable plastic of the present invention preparation is 7.6MPa～11.0MPa, only is 1.8MPa～3.7MPa through 30 days degraded back draft intensity in slowly drained soil; The initial collapse elongation of the bamboo powder/white carbon black composite reinforcing starch base degradable plastic of the present invention's preparation is 152%～167%, and degrading afterwards through 30 days in slowly drained soil, elongation at break only is 42%～109%; The initial shore hardness of the bamboo powder/white carbon black composite reinforcing starch base degradable plastic of the present invention's preparation is 54HA～62HA, and degrading afterwards through 30 days in slowly drained soil, shore hardness only is 34HA～46HA; Illustrate that thus bamboo powder/white carbon black composite reinforcing starch base degradable plastic that the present invention prepares has favorable mechanical performance and biodegradability.In addition, the initial Vicat softening point of the bamboo powder/white carbon black composite reinforcing starch base degradable plastic of the present invention's preparation is 112 ℃～128 ℃, and degrading afterwards through 30 days in slowly drained soil, Vicat softening point only is 78 ℃～97 ℃; Illustrate that thus bamboo powder/white carbon black composite reinforcing starch base degradable plastic that the present invention prepares has good heat-resistant and biodegradability.
The above only is preferred embodiment of the present invention, is not that the present invention is imposed any restrictions.Every any simple modification, change and equivalence of above embodiment being done according to the invention technical spirit changes, and all still belongs in the protection domain of technical solution of the present invention.
Claims (3)
1. the preparation method of bamboo powder/white carbon black composite reinforcing starch base degradable plastic is characterized in that this method may further comprise the steps:
Step 1, take by weighing following various raw material by weight: 40～70 parts of starch, 10～20 parts in bamboo powder, 5～15 parts of white carbon blacks, 5～10 parts of polyvinyl alcohol, 5～10 parts in softening agent, 1～3 part of composite assistant, 3～6 parts in water; Described composite assistant by polyethylene wax, stearic acid, white oil and coupling agent by mass ratio (27～32): (27～32): (27～32): (8～12) mixed preparing forms; Described softening agent is dibasic alcohol or trivalent alcohol; Described coupling agent is silane coupling agent;
Mix in step 2, the starch with after taking by weighing in the step 1, bamboo powder, white carbon black, polyvinyl alcohol, softening agent, composite assistant and the water adding mixing machine, obtain compound;
Step 3, compound described in the step 2 being added in the twin screw extruder, is to extrude under 140 ℃～170 ℃ the condition at extrusion temperature, obtains bamboo powder/white carbon black composite reinforcing starch base degradable plastic.
2. the preparation method of a kind of bamboo powder according to claim 1/white carbon black composite reinforcing starch base degradable plastic is characterized in that dibasic alcohol described in the step 1 is ethylene glycol, 1,2-propylene glycol or 1, and ammediol, described trivalent alcohol are glycerol.
3. the preparation method of a kind of bamboo powder according to claim 1/white carbon black composite reinforcing starch base degradable plastic is characterized in that, described silane coupling agent is silane resin acceptor kh-550, silane coupling agent YDH-151 or silane coupling agent KH-570.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103819809A (en) * | 2014-03-19 | 2014-05-28 | 福建师范大学 | EVOH (Ethylene-Vinyl Alcohol Copolymer) based wood-plastic composite material and preparation method thereof |
| CN104059372A (en) * | 2014-06-29 | 2014-09-24 | 柳江县联华纸制品厂 | Degradable packaging bag |
| CN107345003A (en) * | 2016-05-06 | 2017-11-14 | 四川鑫达企业集团有限公司 | A kind of preparation of powdered rice hulls/talcum powder composite reinforcing starch base degradable plastic |
| CN107778817A (en) * | 2017-10-24 | 2018-03-09 | 安徽悦尔伟塑料机械有限公司 | High strength easy-to-degrade refuse bag and preparation method thereof |
| CN110467750A (en) * | 2019-08-28 | 2019-11-19 | 成都新柯力化工科技有限公司 | It is a kind of to increase rigid wearability biological plastics pallet dedicated parent material and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103819809A (en) * | 2014-03-19 | 2014-05-28 | 福建师范大学 | EVOH (Ethylene-Vinyl Alcohol Copolymer) based wood-plastic composite material and preparation method thereof |
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| CN107345003A (en) * | 2016-05-06 | 2017-11-14 | 四川鑫达企业集团有限公司 | A kind of preparation of powdered rice hulls/talcum powder composite reinforcing starch base degradable plastic |
| CN107778817A (en) * | 2017-10-24 | 2018-03-09 | 安徽悦尔伟塑料机械有限公司 | High strength easy-to-degrade refuse bag and preparation method thereof |
| CN110467750A (en) * | 2019-08-28 | 2019-11-19 | 成都新柯力化工科技有限公司 | It is a kind of to increase rigid wearability biological plastics pallet dedicated parent material and preparation method |
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Application publication date: 20130717 |