CN104845400A - Disposable oil-proof water-proof degradable meal box and preparation method thereof - Google Patents
Disposable oil-proof water-proof degradable meal box and preparation method thereof Download PDFInfo
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- CN104845400A CN104845400A CN201510284163.1A CN201510284163A CN104845400A CN 104845400 A CN104845400 A CN 104845400A CN 201510284163 A CN201510284163 A CN 201510284163A CN 104845400 A CN104845400 A CN 104845400A
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Abstract
The invention belongs to the field of recycling of agricultural wastes, and particularly relates to a disposable oil-proof water-proof degradable meal box prepared from straws and a preparation method of the meal box. The disposable oil-proof water-proof degradable meal box prepared from the straws is prepared from the following raw materials in parts by weight: 50-100 parts of corn straws, 50-100 parts of wheat straws, 50-100 parts of purple perilla straws, 50-100 parts of bamboo leaves, 1-7 parts of auxiliary agents, 0.5-2.5 parts of oil-proof agents and 0.5-2.5 parts of paraffins. The disposable oil-proof water-proof degradable meal box prepared from the straws, which is disclosed by the invention, has the advantages of good oil proofing and water resistance of a product, simple preparation process, low production cost, degradability and safety without toxicity.
Description
Technical field
The invention belongs to agricultural wastes recycling field, be specifically related to standby disposable grease-proof and waterproof degradable cutlery box of a kind of straw and preparation method thereof.
Background technology
Stalk fibre is one of reproducibility biopolymer resource that nature is huge, and the annual stalk fibre output in the whole world is about 40 × 10t, and Chinese stalk resource annual output reaches 7.9 hundred million t.The resource significant wastage adopting the way Treating straw burning or bury to cause and serious problem of environmental pollution are more and more subject to people's attention.A lot of report has been had at present, as fertilizer, novel energy, livestock feed, degradation material, cultivation edible mushrooms base-material and build material etc. by straw utilization aspect.
The report of the disposable grease-proof and waterproof degradable cutlery box prepared is used at present there are no stalk.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides standby disposable grease-proof and waterproof degradable cutlery box of a kind of straw and preparation method thereof.The present invention utilizes the waste straw such as maize straw, wheat stalk, purple perilla straw and rape stalk as raw material, be aided with special assistant to be prepared from, achieve the comprehensive utilization of waste straw, the disposable lunch-box utilizing the method for the application to prepare has water-tolerant, manufacture craft is simple, production cost is low, degradable, the advantages such as safety non-toxic.
The topmost improvement of the present invention is to utilize that multiple stalk is composite to be formed, maize straw wherein and wheat stalk are utilized widely, but itself and purple perilla straw and the leaf of bamboo are occurred in this area or for the first time with the use of preparing degradation material, its cardinal principle utilizes the general fibre in fiber in purple perilla straw and the leaf of bamboo and maize straw and wheat stalk complementary, due to the tenacity of fibre in purple perilla straw and the leaf of bamboo and water resistance better, can the deficiency of reinforcement maize straw and wheat stalk fiber, utilize the intensity of maize straw and wheat stalk fiber to obtain multiduty material simultaneously, and above-mentioned fiber all can by environment fast degradation, environmental pollution can not be caused, achieve the comprehensive utilization of stalk.
The present invention is realized by following technical scheme:
A kind of disposable grease-proof and waterproof degradable cutlery box, is prepared from by the raw material of following weight part:
Maize straw 50-100 part, wheat stalk 50-100 part, purple perilla straw 50-100 part, leaf of bamboo 50-100 part, auxiliary agent 1-7 part, oil-proofing agent 0.5-2.5 part, paraffin 0.5-2.5 part;
Purple perilla is at Chinese conventional Chinese medicine, and having function that is loose cold, relieving QI stagnancy in the stomach of inducing sweat, in cutlery box, add purple perilla straw, contribute to coordinating intestines and stomach, the fragrance of purple perilla can bring good aroma effect to people in addition, improves appetite;
The leaf of bamboo, as a kind of common plant component, has heat-clearing and detoxicating drug, clearing heat and relieving fidgetness, and the effect of diuresis of promoting the production of body fluid, adds the leaf of bamboo in cutlery box, while having dinner, also can take in part leaf of bamboo composition, thus play above-mentioned effect;
Paraffin is as water-resisting agent;
Described auxiliary agent is polyvinyl alcohol water solution or the Vltra tears aqueous solution or amidin or its mixture;
Described oil-proofing agent is the mixture of chitosan and cationic starch, and both weight proportions are 1:2;
Described various stalk and the moisture content of the leaf of bamboo are lower than 10wt%.
Preferably, a kind of starting material of disposable grease-proof and waterproof degradable cutlery box are as follows: maize straw 60-90 part, wheat stalk 60-90 part, purple perilla straw 60-90 part, leaf of bamboo 60-90 part, auxiliary agent 3-5 part, oil-proofing agent 1-2 part, paraffin 1-2 part.
Preferred, a kind of starting material of disposable grease-proof and waterproof degradable cutlery box are as follows: maize straw 75 parts, wheat stalk 75 parts, purple perilla straw 75 parts, 75 parts, the leaf of bamboo, auxiliary agent 4 parts, oil-proofing agent 2 parts, 2 parts, paraffin.
The massfraction of described polyvinyl alcohol water solution or the Vltra tears aqueous solution or amidin is 10-25%.
Why control the consumption of above-mentioned fiber, in order under the prerequisite ensureing the degradation material self-strength obtained, give full play to toughness and the water resistance of purple perilla straw and leaf of bamboo fiber, simultaneously above-mentioned two kinds of fibers self are with the fragrance of purple perilla or the leaf of bamboo, can improve the comfort level of user during use, and selected auxiliary agent is polyvinyl alcohol water solution or the Vltra tears aqueous solution or amidin, and its massfraction is 10-25%, why select above-mentioned auxiliary agent, because above-mentioned auxiliary agent has good adhesive property, above-mentioned various fibers can be combined, improve the bulk strength of material, what adopt is the formulation of its aqueous solution simultaneously, for environment without any impact, very large progress is had than adopting the auxiliary agent of organic solvent dissolution, and above-mentioned polyvinyl alcohol water solution or the Vltra tears aqueous solution or amidin polyvinyl alcohol wherein after discarded, Vltra tears and starch can complete auto-degradation at short notice, thus realize the fast degradation of whole material, and above-mentioned substance degraded changes the content of soil composition together with fiber, more nutritive substance is provided, improve the fertilizer efficiency in soil, be conducive to the growth of crop.
The preparation method of disposable grease-proof and waterproof degradable cutlery box is as follows:
(1) choose maize straw, wheat stalk, purple perilla straw, the leaf of bamboo by formula ratio, be crushed to length 1 ~ 30mm, be 2%NaOH solution or 100 DEG C of hot-water cure with massfraction, the treatment time is 2-5h; Every 1kg said mixture needs 15-25L massfraction to be 2%NaOH solution or 100 DEG C of hot water, filters to obtain powder, dry to constant weight after having processed;
(2) powder of step (1) gained is mixed, add auxiliary agent and the oil-proofing agent of formula ratio, mix;
(3) adopt through pressure sintering preparation, hot pressing temperature 120 DEG C, hot pressing time 30min, in mould, the demoulding after naturally cooling, to obtain final product.
Preferably, the described middle treatment time is 3h; Every 1kg stalk needs 20L massfraction to be 2%NaOH solution or 100 DEG C of hot water.
Adopt this preparation method, its utilization ratio can be improved by after various crushed stalk, increase the contact area of itself and treatment agent, improve processing efficiency, and adopt the NaOH solution of above-mentioned concentration and consumption or 100 DEG C of hot water to process, the objectionable impurities on stalk surface can be removed, change the performance on stalk surface simultaneously, remove the chemical compositions such as part is siliceous, hemicellulose, reduce fiber surface contact angle, improve fiber wetness, the fragrance matter be also beneficial in purple perilla straw and rape stalk distributes, and improves the comfort level of user; Process the NaOH solution of use or hot water can recycle simultaneously, improves its service efficiency, reduces the pollution for environment; Stalk powder after NaOH solution or 100 DEG C of hot-water cure, better can be combined with auxiliary agent, reduce the consumption of auxiliary agent simultaneously.
Beneficial effect of the present invention is:
(1) in the preparation method of disposable grease-proof and waterproof degradable cutlery box of the present invention, stalk is processed, stalk process can change stalk fibre surface property in various degree and remove the chemical compositions such as part is siliceous, hemicellulose, reduce fiber surface contact angle, improve fiber wetness.
(2) in disposable grease-proof and waterproof degradable cutlery box of the present invention, add the nontoxic chitosan of human-body safety and cationic starch as oil-proofing agent, result of study shows that the water resistant oil-proofness of composite oil-proof agent is better, and thermostability is higher, the quality between 120 DEG C-220 DEG C is highly stable.The mode of top sizing is adopted to be added to by oil-proofing agent in base paper, the appearance structure adopting the modern test method such as SEM, FT-IR to carry out page characterizes, test result confirms, chitosan and cationic starch generation crosslinking reaction in composite oil-proof agent, after applying glue, page surface forms one deck film fine and close continuously, and this film has grease proofing effect.
(3) the disposable grease-proof and waterproof degradable cutlery box that straw of the present invention is standby, product grease proofness is good, water-tolerant, and manufacture craft is simple, and production cost is low, degradable, safety non-toxic.
(4) delicate fragrance that the cutlery box made has a purple perilla can rouse oneself the appetite of people.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described, so that those skilled in the art more understands the present invention, but does not therefore limit the present invention.
In embodiments of the invention, hot-press forming device used is the XLB-DH electromagnetism flat sulfuration equipment that Huzhou produces along power rubber company.
Oil-proofing agent used in the embodiment of the present invention is the mixture of chitosan and cationic starch, and both weight proportions are 1:2.Cationic starch chitosan is purchased from Yun Zhou bio tech ltd, Qingdao.Cationic starch used in the embodiment of the present invention is purchased from Nanjing, Wuxi tower starch company limited.
Embodiment 1
The disposable grease-proof and waterproof degradable cutlery box that straw is standby, is prepared from by the raw material of following weight part:
Maize straw 75 parts, wheat stalk 75 parts, purple perilla straw 75 parts, 75 parts, the leaf of bamboo, auxiliary agent 4 parts, oil-proofing agent 2 parts, 2 parts, paraffin.
Described auxiliary agent is polyvinyl alcohol water solution, and the massfraction of described polyvinyl alcohol water solution is 25%;
Described oil-proofing agent is the mixture of chitosan and cationic starch, and both weight proportions are 1:2;
Described various stalk and the moisture content of the leaf of bamboo are lower than 10wt%.
The preparation method of the above-mentioned disposable grease-proof and waterproof degradable cutlery box standby with straw, comprises following step:
(1) get the maize straw of formula ratio, wheat stalk, purple perilla straw, bamboo leaf powder be broken to length 1 ~ 30mm, be 2%NaOH solution-treated with massfraction, treatment time is 3h, every 1kg stalk needs 20L massfraction to be 2%NaOH solution, and the stalk powder after having processed is dried to constant weight;
(2) straw powder mixing is, and adds polyvinyl alcohol water solution and oil-proofing agent and paraffin;
(3) adopt through pressure sintering preparation, hot pressing temperature 120 DEG C, hot pressing time 30min, in mould, the demoulding after naturally cooling, to obtain final product.
Embodiment 2
The disposable grease-proof and waterproof degradable cutlery box that straw is standby, is prepared from by the raw material of following weight part:
Maize straw 60 parts, wheat stalk 90 parts, purple perilla straw 60 parts, 90 parts, the leaf of bamboo, auxiliary agent 3 parts, oil-proofing agent 0.6 part, 0.6 part, paraffin.
Described auxiliary agent is the Vltra tears aqueous solution, and the massfraction of the described Vltra tears aqueous solution is 10%;
Described oil-proofing agent is the mixture of chitosan and cationic starch, and both weight proportions are 1:2;
Described various stalk and the moisture content of the leaf of bamboo are lower than 10wt%.
The preparation method of the above-mentioned disposable grease-proof and waterproof degradable cutlery box standby with straw, comprises following step:
(1) get the maize straw of formula ratio, wheat stalk, purple perilla straw, bamboo leaf powder be broken to length 1 ~ 30mm, be 2%NaOH solution with massfraction, treatment time is 2h, and every 1kg stalk needs 15L massfraction to be 2%NaOH solution, and the stalk powder after having processed is dried to constant weight;
(2) straw powder mixing is, and adds the HPMC aqueous solution, oil-proofing agent and paraffin;
(3) adopt through pressure sintering preparation, hot pressing temperature 120 DEG C, hot pressing time 30min, in mould, the demoulding after naturally cooling, to obtain final product.
Embodiment 3
The disposable grease-proof and waterproof degradable cutlery box that straw is standby, is prepared from by the raw material of following weight part:
Maize straw 90 parts, wheat stalk 60 parts, purple perilla straw 90 parts, 60 parts, the leaf of bamboo, auxiliary agent 5 parts, oil-proofing agent 2.4 parts, 2.4 parts, paraffin.
Described auxiliary agent is amidin, and the massfraction of described amidin is 15%;
Described oil-proofing agent is the mixture of chitosan and cationic starch, and both weight proportions are 1:2;
Described various stalk and the moisture content of the leaf of bamboo are lower than 10wt%.
The preparation method of the above-mentioned disposable grease-proof and waterproof degradable cutlery box standby with straw, comprises following step:
(1) get the maize straw of formula ratio, wheat stalk, purple perilla straw, bamboo leaf powder be broken to length 1 ~ 30mm, be 100 DEG C of hot-water cure with massfraction, treatment time is 5h, and every 1kg stalk needs 25L 100 DEG C of hot water, and the stalk powder after having processed is dried to constant weight;
(2) straw powder mixing is, and adds amidin, oil-proofing agent and paraffin;
(3) adopt through pressure sintering preparation, hot pressing temperature 120 DEG C, hot pressing time 30min, in mould, the demoulding after naturally cooling, to obtain final product.
Embodiment 4
The disposable grease-proof and waterproof degradable cutlery box that straw is standby, is prepared from by the raw material of following weight part:
Maize straw 50 parts, wheat stalk 100 parts, purple perilla straw 50 parts, 100 parts, the leaf of bamboo, auxiliary agent 1 part, oil-proofing agent 2.2 parts, 2.1 parts, paraffin.
Described auxiliary agent is polyvinyl alcohol water solution, and the massfraction of described polyvinyl alcohol water solution is 15%;
Described oil-proofing agent is the mixture of chitosan and cationic starch, and both weight proportions are 1:2;
Described various stalk and the moisture content of the leaf of bamboo are lower than 10wt%.
The preparation method of the above-mentioned disposable grease-proof and waterproof degradable cutlery box standby with straw, comprises following step:
(1) get the maize straw of formula ratio, wheat stalk, purple perilla straw, bamboo leaf powder be broken to length 1 ~ 30mm, be 2%NaOH solution with massfraction, treatment time is 3h, and every 1kg stalk needs 20L massfraction to be 2%NaOH solution, and the stalk powder after having processed is dried to constant weight;
(2) straw powder mixing is, and adds polyvinyl alcohol water solution, oil-proofing agent and paraffin;
(3) adopt through pressure sintering preparation, hot pressing temperature 120 DEG C, hot pressing time 30min, in mould, the demoulding after naturally cooling, to obtain final product.
Embodiment 5
The disposable grease-proof and waterproof degradable cutlery box that straw is standby, is prepared from by the raw material of following weight part:
Maize straw 100 parts, wheat stalk 50 parts, purple perilla straw 100 parts, 50 parts, the leaf of bamboo, auxiliary agent 7 parts, oil-proofing agent 0.6 part, 0.5 part, paraffin.
Described auxiliary agent is the Vltra tears aqueous solution, and the massfraction of the described poly-Vltra tears aqueous solution is 20%;
Described oil-proofing agent is the mixture of chitosan and cationic starch, and both weight proportions are 1:2;
Described various stalk and the moisture content of the leaf of bamboo are lower than 10wt%.
The preparation method of the above-mentioned disposable grease-proof and waterproof degradable cutlery box standby with straw, comprises following step:
(1) get the maize straw of formula ratio, wheat stalk, purple perilla straw, bamboo leaf powder be broken to length 1 ~ 30mm, be 2%NaOH solution or 100 DEG C of hot-water cure with massfraction, treatment time is 3h, every 1kg stalk needs 20L massfraction to be 2%NaOH solution or 100 DEG C of hot water, and the stalk powder after having processed is dried to constant weight;
(2) straw powder mixing is, and adds the HPMC aqueous solution, oil-proofing agent and paraffin;
(3) adopt through pressure sintering preparation, hot pressing temperature 120 DEG C, hot pressing time 30min, in mould, the demoulding after naturally cooling, to obtain final product.
Disposable grease-proof and waterproof degradable cutlery box prepared by various embodiments of the present invention, has contained rice congee and has not softened for 40 minutes.
According to GB18006.1-1999 " degradable disposable dinner (beverage) containers generic specifications ", State Environmental Protection Administration has issued HBC1-2001 " environmental product technical requirements-disposable food or beverage container " and has checked disposable snack box prepared by the embodiment of the present application, and detected result is as following table 1.
Table 1
| Testing index | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Pesticide residue | Do not detect | Do not detect | Do not detect | Do not detect | Do not detect |
| Flavus poison | Do not detect | Do not detect | Do not detect | Do not detect | Do not detect |
Utilize degradable cutlery box provided by the present invention, its product water-tolerant as seen, manufacture craft is simple, and production cost is low, degradable, safety non-toxic.
Claims (6)
1. a disposable grease-proof and waterproof degradable cutlery box, is characterized in that, be prepared from by the raw material of following weight part:
Maize straw 50-100 part, wheat stalk 50-100 part, purple perilla straw 50-100 part, leaf of bamboo 50-100 part, auxiliary agent 1-7 part, oil-proofing agent 0.5-2.5 part, paraffin 0.5-2.5 part;
Described auxiliary agent is polyvinyl alcohol water solution or the Vltra tears aqueous solution or amidin or its mixture;
Described oil-proofing agent is the mixture of chitosan and cationic starch, and both weight proportions are 1:2;
Described various stalk moisture contents are lower than 10wt%.
2. disposable grease-proof and waterproof degradable cutlery box as claimed in claim 1, is characterized in that, be prepared from by the raw material of following weight part:
Maize straw 60-90 part, wheat stalk 60-90 part, purple perilla straw 60-90 part, leaf of bamboo 60-90 part, auxiliary agent 3-5 part, oil-proofing agent 1-2 part, paraffin 1-2 part.
3. disposable grease-proof and waterproof degradable cutlery box as claimed in claim 2, is characterized in that, be prepared from by the raw material of following weight part:
Maize straw 75 parts, wheat stalk 75 parts, purple perilla straw 75 parts, 75 parts, the leaf of bamboo, auxiliary agent 4 parts, oil-proofing agent 2 parts, 2 parts, paraffin.
4. disposable grease-proof and waterproof degradable cutlery box as claimed in claim 1, is characterized in that, the massfraction of described polyvinyl alcohol water solution or the Vltra tears aqueous solution or amidin is 10-25%.
5. the method for preparation as required the disposable grease-proof and waterproof degradable cutlery box as described in 1, it is characterized in that, its preparation method is as follows:
(1) choose maize straw, wheat stalk, purple perilla straw, the leaf of bamboo by formula ratio, be crushed to length 1 ~ 30mm, be 2%NaOH solution or 100 DEG C of hot-water cure with massfraction, the treatment time is 2-5h; Every 1kg said mixture needs 15-25L massfraction 2%NaOH solution or 100 DEG C of hot water, filters to obtain powder, dry to constant weight after having processed;
(2) powder of step (1) gained is mixed, add the auxiliary agent of formula ratio, oil-proofing agent and paraffin, mix;
(3) adopt through pressure sintering preparation, hot pressing temperature 120 DEG C, hot pressing time 30min, in mould, the demoulding after naturally cooling, to obtain final product.
6. the preparation method of disposable grease-proof and waterproof degradable cutlery box as claimed in claim 5, it is characterized in that, the described middle treatment time is 3h; Every 1kg stalk needs 20L massfraction 2%NaOH solution or 100 DEG C of hot water.
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| CN106957536A (en) * | 2017-04-28 | 2017-07-18 | 安徽以诺木塑板材科技有限公司 | A kind of oil resistant Wood-plastic floor and preparation method thereof |
| CN108634301A (en) * | 2018-04-25 | 2018-10-12 | 朱丹 | Health food with lunch box for environment protection |
| CN109266031A (en) * | 2018-08-31 | 2019-01-25 | 安徽省新兴纸业有限责任公司 | A kind of high flatness paper snack box |
| CN110512457A (en) * | 2019-08-08 | 2019-11-29 | 岳阳林纸股份有限公司 | A kind of manufacturing method of grease proofing film coated base paper |
| CN110684239A (en) * | 2019-10-08 | 2020-01-14 | 青岛科技大学 | High-temperature-resistant and high-water-resistant cellulose-based material, preparation method thereof and paper cup or lunch box |
| CN111733631A (en) * | 2020-06-23 | 2020-10-02 | 安徽德琳环保发展（集团）有限公司 | Preparation method of bamboo fiber lunch box |
| CN112920617A (en) * | 2021-01-26 | 2021-06-08 | 江阴市瑞和盛纸品有限公司 | Environment-friendly fast-degradable lunch box and preparation method thereof |
| CN114456444A (en) * | 2022-02-11 | 2022-05-10 | 广东省贵来新材料科技有限公司 | Cellulose-based high polymer material for degradable product and preparation method thereof |
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| CN106957536A (en) * | 2017-04-28 | 2017-07-18 | 安徽以诺木塑板材科技有限公司 | A kind of oil resistant Wood-plastic floor and preparation method thereof |
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| CN109266031A (en) * | 2018-08-31 | 2019-01-25 | 安徽省新兴纸业有限责任公司 | A kind of high flatness paper snack box |
| CN110512457A (en) * | 2019-08-08 | 2019-11-29 | 岳阳林纸股份有限公司 | A kind of manufacturing method of grease proofing film coated base paper |
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| CN110684239B (en) * | 2019-10-08 | 2021-10-08 | 青岛科技大学 | High-temperature-resistant and high-water-resistant cellulose-based material, preparation method thereof and paper cup or lunch box |
| CN111733631A (en) * | 2020-06-23 | 2020-10-02 | 安徽德琳环保发展（集团）有限公司 | Preparation method of bamboo fiber lunch box |
| CN114634716A (en) * | 2020-12-16 | 2022-06-17 | 湖南登科材料科技有限公司 | Degradable lunch box material and preparation method thereof |
| CN112920617A (en) * | 2021-01-26 | 2021-06-08 | 江阴市瑞和盛纸品有限公司 | Environment-friendly fast-degradable lunch box and preparation method thereof |
| CN114456444A (en) * | 2022-02-11 | 2022-05-10 | 广东省贵来新材料科技有限公司 | Cellulose-based high polymer material for degradable product and preparation method thereof |
| WO2023151041A1 (en) * | 2022-02-11 | 2023-08-17 | 广东省贵来新材料科技有限公司 | Cellulose-based polymer material for degradable product and preparation method therefor |
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Application publication date: 20150819 |