CN105153521A - Polyethylene packaging material for bale fire warning system and preparation method - Google Patents
Polyethylene packaging material for bale fire warning system and preparation method Download PDFInfo
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- CN105153521A CN105153521A CN201510623178.6A CN201510623178A CN105153521A CN 105153521 A CN105153521 A CN 105153521A CN 201510623178 A CN201510623178 A CN 201510623178A CN 105153521 A CN105153521 A CN 105153521A
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- bale
- polyethylene
- warning system
- packaging material
- cotton
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wrappers (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Fireproofing Substances (AREA)
Abstract
The invention relates to a polyethylene packaging material for a bale fire warning system and a preparation method and belongs to the field of the fire fore-warning system and polyethylene packaging materials. The polyethylene packaging material comprises components in weight of 100 parts of polyethylene and 5-10 parts of sulfydryl ester (10, 11-2 sulfydryl-octadecanoic acid sulfydryl ethyl) coated microspheres. The polyethylene is low density polyethylene, and the processing temperature is about 25 DGE C. The working principle is that a sulfhydryl compound sensor array is mounted in a bale stacking area, sulfydryl ester can be decomposed to release a sulfhydryl compound before the bale area temperature reach the cotton fire point, the compound is detected by a sensor and gives an alarm, and accordingly, a fireproof warming effect is realized. According to the polyethylene packaging material for the bale fire warning system and the preparation method, the materials are relatively simple, and the fire prevention practicability is high.
Description
Technical field
The invention belongs to fire early-warning system and polyethylene packaging material field, particularly relate to a kind of bale of cotton fire prevention early warning system polyethylene packaging material.
Background technology
The explained hereafter of present cotton has presented the situation of comparative maturity all, but has inflammable due to cotton itself, make its produce and shipping storage process in have and manyly want Attention question.About such as when 1 day 18 July in 2013, wait horse in the cotton Shanxi of middle storage and there occurs a fire for bank, burnt area about 1.05 ten thousand square metres, has approximately burnt 2.46 tons of cottons.Its reason of fire caused by " thunderbolt " because outdoor buttress piles up in thundery sky, and financial loss reaches 500,000,000 yuan.In addition in the process of explained hereafter, due to its long flow path, operation is many, and mechanical means is complicated, and quantity is large, and machine dense arrangement, passage is narrow, and machinery equipment rotating speed is fast.Make occurrence index higher, hazardness is larger.And once presence of fire, many owing to spreading approach, the very easily three-dimensional fire of occurrence of large-area.Meanwhile, the harm of fire failure is huge, and consequence is serious, gently then burns raw material and product, heavy then wrack machine or cause casualties.Such as in certain newly-built cotton ginning enterprise in Xinjiang, after for some time is rolled in production line examination, carry out maintenance down, at this moment have cotton grower to come to sell cotton, shovel cotton car and unginned cotton is discharged to from the position close to flower feeding machine.Just find when unloading complete clearly that the cotton heap just unloaded is on fire, cause 20 tons of unginned cottons and a flower feeding machine directly to burn.
For the feature that the bale of cotton is inflammable, many enterprises all can implement a series of measures for the prevention of fire in the process of producing and store.And generally have following several fire resistant way now.First: in the selection in factory site, especially cotton purchase station and cotton ginning mill, selects away from highway arterial highway as far as possible, and to avoid pedestrian, vehicle brings potential safety hazard to cotton buttress etc.Second: the design for plant area is wanted rationally, to arrange division board separate for different zones.And the practical situation of plant area are arranged to also have and also will arrange appropriately the spacing of cotton buttress to lightning protection according to related specifications.3rd: with corresponding fire service, can ensure to carry out fire extinguishing process with the fastest speed on fire.
For the fire prevention pre-warning facility of large-scale cotton field.The overwhelming majority is all the monitoring only having a temperature and humidity.And send special messenger to exercise supervision management, in warehouse, no smoking.When temperature or humidity too high time, ventilated by vent window and reduce.And in the process of producing, be generally install alarm unit additional to machine just to report to the police when temperature or speed exceed certain preset value, stop the possibility of the presence of fire because temperature is too high.
Thiol esters is because its owned mercapto groups compound, and this compound has strong impulse smell, so can realize the function of early warning.Present this technology ripe applying in the real life of Liquified gas leakage has been gone.When we use liquefied gas now, we know when having opened liquefied gas and fire and having put out, and will smell one after a while stimulates niff.Thus liquefied gas does not close to allow people recognize, avoids the generation of gas leak event.
Thiol esters class is added in the wrapping polyethylene of the bale of cotton, preparation has the wrapping material of fire prevention warning function, can decompose during the early warning temperature of this wrapping material before cotton reaches burning-point and release thiol esters class signal gas, coordinate sensor array to use, before cotton is burnt, notify that managerial personnel remove or spray cooling process the dangerous bale of cotton.The benefit of this method is, it does not put the restriction with accumulation mode by the bale of cotton, has also lacked artificial supervision.The usable floor area of stacking can be reduced with this, manpower and financial resources all can have greatly improved.
Summary of the invention
The object of the invention is the fire prevention early warning problem in order to solve when large-scale bale of cotton field stacks the bale of cotton in a large number, adopt innovative approach to discharge fire alarm signal in advance before the bale of cotton may burn, give the enough pre-warning times of bale of cotton field watchman and carry out processing potential fire risk.
Basic thought of the present invention is rise in bale of cotton temperature, and before temperature reaches burning-point, discharge signal gas in time, this gas is uncommon at occurring in nature, has peculiar taste and can trigger corresponding measuring element to report to the police.
A kind of bale of cotton fire prevention of the present invention early warning system polyethylene packaging material, its raw material composition calculates according to parts by weight and is:,
Polyethylene 100 parts;
Thiol esters (10,11-2 sulfydryl-octadecanoic acid mercapto ethyl ester, Aladdin Reagent Company) coated microballoon (oneself preparation) 5-10 part.
Namely above component obtains bale of cotton fire prevention early warning system polyethylene packaging material after screw extrusion press mixing granulation.
Wherein said polyethylene is Low Density Polyethylene, and being suitable in processing temperature is about 125 DEG C, prepares thin-film material by blow molding process.
The feature of wherein said thiol esters is long-chain with 15-50 carbon or multiple round annular structure, and as 10,11-2 sulfydryl-octadecanoic acid mercapto ethyl ester, structure is as follows:
。
Can decompose at a certain temperature and release volatilizable sulfhydryl compound, such as sulfydryl methane, this compound is existing special tangy under low concentration, is easily detected by human olfactory and electronic detectors.Thiol esters is protected through micro-spheres, to ensure to discharge sulfhydryl compound in advance at PE Processing temperature.
The making method of above-mentioned bale of cotton fire prevention early warning system polyethylene packaging material, carry out according to following step:
(1) thiol esters (10,11-2 sulfydryl-octadecanoic acid mercapto ethyl ester, Aladdin Reagent Company) preparation of coated microballoon: 10 parts of thiol esters joined in 50 parts of clorafins and 50 parts of trichloromethane solvents, and use magnetic stirring apparatus to stir, churning time is 2h.The mixture obtained after reaction terminates uses baking oven to carry out drying successively, drying temperature is set to 60 DEG C, and then carries out milled processed with mortar, and the powder of grinding needs even thickness, and screen through 200 object screen clothes, namely the powder screened can be used as the coated microballoon of thiol esters.
(2) melting of Low Density Polyethylene: by proportioning by Low Density Polyethylene, thiol esters (10,11-2 sulfydryl-octadecanoic acid mercapto ethyl ester) coated microballoon mixes in high-speed mixer, mixed raw material, through the abundant melting mixing of twin screw extruder, can obtain bale of cotton fire prevention early warning system Low Density Polyethylene wrapping material after extruding pelletization.
(3) film is prepared: particle is prepared into film by blown film machine.
(4) early warning system of preventing fires test: the wrapping material prepared are heated up, about 130 DEG C time, can special odor be discharged, detected by corresponding sensor and report to the police.
Beneficial effect: the present invention, by easy complete processing, by thiol esters on polyethylene blend, regulates proportioning, prepare the polyethylene packaging material with fire prevention warning function, retain poly thermostability and processibility, production method is relatively simple, and versatility is good simultaneously.
Embodiment
By following examples, the present invention will be described in more detail, and the present invention is not by the restriction of these embodiments.
The making method of bale of cotton fire prevention early warning system polyethylene packaging material, needs twin-screw extrusion equipment to be prepared.
Bale of cotton fire prevention early warning system polyethylene packaging material, after twin-screw extrusion, carries out granulation by tablets press.The matrix material of gained is applicable to corresponding injection moulding, and the means such as supercharging or hot compound are with the wrapped product of the obtained different demand of various adaptation.
Performance test methods: be filmed through blown film machine by pellet, independently arranges and heats warning device accordingly, add Thermal test to it, and verifies its fire prevention warning function.
Thiol esters (10,11-2 sulfydryl-octadecanoic acid mercapto ethyl ester, Aladdin Reagent Company) preparation of coated microballoon: 10 kilograms of thiol esters joined in 50 kilograms of clorafins and 50 kilograms of trichloromethane solvents, and use magnetic stirring apparatus to stir, churning time is 2h.The mixture obtained after reaction terminates uses baking oven to carry out drying successively, drying temperature is set to 60 DEG C, and then carries out milled processed with mortar, and the powder of grinding needs even thickness, and screen through 200 object screen clothes, namely the powder screened can be used as the coated microballoon of thiol esters.
Embodiment 1
Formula: Low Density Polyethylene (LDPE, Dongguan City Qi Dasi plastic material company limited) 7 kilograms (Dongguan City Qi Dasi plastic material company limited), thiol esters (10,11-2 sulfydryl-octadecanoic acid mercapto ethyl ester, Aladdin Reagent Company) coated microballoon (oneself preparation) 0.5 kilogram;
Adopt twin-screw extrusion equipment, Low Density Polyethylene is through fully dry, and in high-speed mixer, microballoon coated with thiol esters fully mixes, and uses twin screw extruder to carry out melting, eventually passes tablets press and carry out granulation.The Low Density Polyethylene wrapping material pellet of the bale of cotton fire prevention warning function system obtained uses blown film machine, carries out film preparation to it.By be laid with sensor room in placement procedure temperature regulating device, be placed in temperature programmed control device by the Low Density Polyethylene wrapping material of preparation and at the uniform velocity heat up, can test produce guard signal before cotton burning-point.
Embodiment 2
Formula: Low Density Polyethylene (LDPE, Dongguan City Qi Dasi plastic material company limited) 8.5 kilograms (Dongguan City Qi Dasi plastic material company limited), thiol esters (10,11-2 sulfydryl-octadecanoic acid mercapto ethyl ester, Aladdin Reagent Company) coated microballoon (oneself preparation) 0.75 kilogram;
Adopt twin-screw extrusion equipment, Low Density Polyethylene is through fully dry, and in high-speed mixer, microballoon coated with thiol esters fully mixes, and uses twin screw extruder to carry out melting, eventually passes tablets press and carry out granulation.The Low Density Polyethylene wrapping material pellet of the bale of cotton fire prevention warning function system obtained uses blown film machine, carries out film preparation to it.By be laid with sensor room in placement procedure temperature regulating device, be placed in temperature programmed control device by the Low Density Polyethylene wrapping material of preparation and at the uniform velocity heat up, can test produce guard signal before cotton burning-point.
Embodiment 3
Formula: Low Density Polyethylene (LDPE, Dongguan City Qi Dasi plastic material company limited) 10 kilograms, thiol esters (10,11-2 sulfydryl-octadecanoic acid mercapto ethyl ester, Aladdin Reagent Company) coated microballoon (oneself preparation) 1 kilogram;
Adopt twin-screw extrusion equipment, Low Density Polyethylene is through fully dry, and in high-speed mixer, microballoon coated with thiol esters fully mixes, and uses twin screw extruder to carry out melting, eventually passes tablets press and carry out granulation.The Low Density Polyethylene wrapping material pellet of the bale of cotton fire prevention warning function system obtained uses blown film machine, carries out film preparation to it.By be laid with sensor room in placement procedure temperature regulating device, be placed in temperature programmed control device by the Low Density Polyethylene wrapping material of preparation and at the uniform velocity heat up, can test produce guard signal before cotton burning-point.
Comparative example 4(Low Density Polyethylene)
Formula: Low Density Polyethylene (LDPE, Dongguan City Qi Dasi plastic material company limited) 7 kilograms.
Low Density Polyethylene is fully dry, mix in high-speed mixer by proportioning, use twin screw extruder extrude and through blown film machine, be prepared into film.By be laid with sensor room in placement procedure temperature regulating device, be placed in temperature programmed control device by the low-density polyethylene wrapping material of preparation and at the uniform velocity heat up, can test produce guard signal before cotton burning-point.
Table 1 ann test result
| Time of fire alarming (s) | Alarm temperature (DEG C) | |
| Embodiment 1 | 15 | 127 |
| Embodiment 2 | 17 | 131 |
| Embodiment 3 | 14 | 120 |
| Comparative example 4 | Nothing | Nothing |
Table 1 gives ann test result.As can be seen from the table, bale of cotton fire prevention early warning system polyethylene packaging material that this patent provides and preparation method thereof, by the blended fire prevention warning function realizing wrapping material on existing molding device basis, bale of cotton Low Density Polyethylene wrapping material can be applicable to.
Claims (4)
1. a bale of cotton fire prevention early warning system polyethylene packaging material, it is characterized in that its raw material composition calculates according to parts by weight is: polyethylene 100 parts;
Thiol esters (10,11-2 sulfydryl-octadecanoic acid mercapto ethyl ester, Aladdin Reagent Company) coated microballoon (oneself preparation) 5-10 part.
2. a kind of bale of cotton fire prevention early warning system polyethylene packaging material according to claim 1, it is characterized in that wherein said polyethylene is Low Density Polyethylene, being suitable in processing temperature is about 125 DEG C, prepares thin-film material by blow molding process.
3. a kind of bale of cotton fire prevention early warning system polyethylene packaging material according to claim 1, is characterized in that the feature of wherein said thiol esters is long-chain with 15-50 carbon or multiple round annular structure, as 10,11-2 sulfydryl-octadecanoic acid mercapto ethyl ester.
4. the making method of bale of cotton fire prevention early warning system polyethylene packaging material according to claim 1, is characterized in that carrying out according to following step:
The preparation of thiol esters (10,11-2 sulfydryl-octadecanoic acid mercapto ethyl ester, Aladdin Reagent Company) coated microballoon: 10 parts of thiol esters joined in 50 parts of clorafins and 50 parts of trichloromethane solvents, and use magnetic stirring apparatus to stir, churning time is 2h; The mixture obtained after reaction terminates uses baking oven to carry out drying, drying temperature is set to 60 DEG C, and then carries out milled processed with mortar, and the powder of grinding needs even thickness, and screen through 200 object screen clothes, namely the powder screened can be used as the coated microballoon of thiol esters; The melting of Low Density Polyethylene: by proportioning by Low Density Polyethylene, thiol esters (10,11-2 sulfydryl-octadecanoic acid mercapto ethyl ester) coated microballoon mixes in high-speed mixer, mixed raw material, through the abundant melting mixing of twin screw extruder, can obtain bale of cotton fire prevention early warning system Low Density Polyethylene wrapping material after extruding pelletization;
Prepare film: particle is prepared into film by blown film machine; Fire prevention early warning system test: the wrapping material prepared are heated up, about 130 DEG C time, can special odor be discharged, detected by corresponding sensor and report to the police.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510623178.6A CN105153521A (en) | 2015-09-28 | 2015-09-28 | Polyethylene packaging material for bale fire warning system and preparation method |
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| CN201510623178.6A CN105153521A (en) | 2015-09-28 | 2015-09-28 | Polyethylene packaging material for bale fire warning system and preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108586880A (en) * | 2018-05-14 | 2018-09-28 | 宁波开员塑业科技有限公司 | A kind of flame-proof antistatic master material and preparation method thereof with fire behavior early warning indicator |
| CN115584214A (en) * | 2022-10-27 | 2023-01-10 | 常州大学 | Inflatable cotton packaging film with fire early warning function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1281031A (en) * | 2000-08-01 | 2001-01-24 | 伍鹏雁 | Synthetic liquefied gas as fuel |
| US20090064585A1 (en) * | 2003-12-19 | 2009-03-12 | Symrise Gmbh & Co. Kg | Odorisation of fuel gas with low-sulfur odorants |
| CN102430378A (en) * | 2011-09-26 | 2012-05-02 | 上海应用技术学院 | Microcapsule and production method thereof |
-
2015
- 2015-09-28 CN CN201510623178.6A patent/CN105153521A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1281031A (en) * | 2000-08-01 | 2001-01-24 | 伍鹏雁 | Synthetic liquefied gas as fuel |
| US20090064585A1 (en) * | 2003-12-19 | 2009-03-12 | Symrise Gmbh & Co. Kg | Odorisation of fuel gas with low-sulfur odorants |
| CN102430378A (en) * | 2011-09-26 | 2012-05-02 | 上海应用技术学院 | Microcapsule and production method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108586880A (en) * | 2018-05-14 | 2018-09-28 | 宁波开员塑业科技有限公司 | A kind of flame-proof antistatic master material and preparation method thereof with fire behavior early warning indicator |
| CN115584214A (en) * | 2022-10-27 | 2023-01-10 | 常州大学 | Inflatable cotton packaging film with fire early warning function |
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Application publication date: 20151216 |