CN1066862A - Plastic sheeting for farm use carbon black and colour batch thereof - Google Patents
Plastic sheeting for farm use carbon black and colour batch thereof Download PDFInfo
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- CN1066862A CN1066862A CN 92104960 CN92104960A CN1066862A CN 1066862 A CN1066862 A CN 1066862A CN 92104960 CN92104960 CN 92104960 CN 92104960 A CN92104960 A CN 92104960A CN 1066862 A CN1066862 A CN 1066862A
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- carbon black
- plastic sheeting
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- farm use
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Abstract
A kind of carbon black and colour batch thereof that is used to produce agricultural mulch films.This particle size carbon black is 20～30nm, and the DBP absorption value is 80～120cm
3/ 100g, tinting strength is 100～110%, and contains and account for the active function groups of its weight more than 2%.Contain the agricultural mulch films that this sooty colour batch can be made into micron order thickness, and the cost of plastic sheeting for farm use is low, physical and mechanical properties is excellent, and plastic sheeting for farm use still can completely reclaim after being used to plant crops of many seasons, not contaminated land.
Description
What the present invention relates to is the carbon black that uses when producing agricultural mulch films and contains this sooty enriched material-colour batch.
At low temperature season or than cryogenic region, because the needs of arviculture often use water white transparency or painted plastics film mulch farming thing.Film with water white transparency or other color is compared, and carbon black is coupled in the resin of new LDPE (film grade) and so on, and the black agricultural mulch films of making more has practical economic worth and consumption maximum.This black agricultural membrane can absorb sunlight and improve ground temperature, keeps soil humidity, suppresses weeds propagation and widespread, simultaneously, because of having added carbon black, makes it intensity and increases, and is anti-aging, increases the service life.
The physical and mechanical properties of black agricultural membrane and forming process, all closely related with the dispersion state of carbon black in resin.Ordinary carbon black such as high wear-resistant carbon black, intermediate super abrasion furnace black, because its particle surface active function groups is abundant inadequately, the avidity of resin is not strong simultaneously, in resin, disperse not too even, cause the physical and mechanical properties of black agricultural membrane poor, be easier to fragmentation, be difficult to be shaped and be processed into the film of micron order thickness.The black agricultural membrane thickness that use West Europe, North America is 0.03～0.06mm.The Japanese Patent spy opens in the clear 61-192751 communique, and having introduced a kind of thickness is the heat-resisting agricultural mulch films of 0.02mm.Black agricultural membrane thickness is bigger, is not easy to reduce production costs, and is not suitable for very much China rural area and applies.If black agricultural membrane is done too thinly, again may be owing to fragile being dispersed in the soil pollutes.
An object of the present invention is to provide a kind of carbon black that is used to produce micron order thickness agricultural mulch films.
Another object of the present invention provides a kind of carbonarius masterbatch that is used to produce micron order thickness agricultural mulch films.
With particle diameter is that 20～30mm, dibutyl phthalate (the following DBP that notes by abridging into) are 80～120cm
3/ 100g, tinting strength is 100～110% ordinary carbon black, as producing plastic sheeting for farm use of the present invention sooty basic material.Refining this base carbon black with air elutriator, magnetic separator, micropulverizer etc., reduce sooty ash content, foreign matter content.
Through the purified base carbon black, put into again in the rotary type modification treater, utilize properties-correcting agent that carbon black is made surface modification treatment at normal temperatures and pressures.The properties-correcting agent that uses among the present invention is NO, NO
2, nitric acid, potassium bichromate, ozone etc.Preferably adopt gaseous state properties-correcting agent, with the carrier of air as properties-correcting agent.The weight ratio of carbon black treatment capacity and modification dosage should guarantee at 20: 1～200: 1, preferably 50: 1～150: 1, fully contacts in rotary type modification treater with properties-correcting agent so that guarantee carbon black.Processing contains carbon black and accounts for hydroxyl, carboxyl, the lactone group isoreactivity functional group of carbon black weight more than 2% like this, thereby obtains the needed carbon black of production micron order thickness black agricultural membrane of the present invention.
Hence one can see that, and the present invention is used to produce the carbon black of agricultural mulch films, has particle diameter 20～30mm, OBP absorption value 80～120cm
3/ 100g, tinting strength 100～110%, and contain and account for the active function groups of this carbon black weight more than 2%.
The carbon black that such particle diameter is less and structure is not too high helps producing the agricultural mulch films of micron order thickness very much.This carbon black contains more active function groups, has strengthened the affinity with polythylene resin, easily and resin-bonded and being uniformly dispersed, improves carbon black-resin composite materials physical strength greatly.
Particle diameter 20～30nm that refining and surface modification treatment obtain, OBP absorption value 80～120cm
3/ 100g, tinting strength 100～110%, and contain the carbon black that accounts for the active function groups of carbon black weight more than 2%, kind equipment with sealer, mill, mixed milling type twin screw extruder, with the polythylene resins such as blending resin of new LDPE (film grade) or new LDPE (film grade) and high density polyethylene(HDPE), and additives such as lubricant, dispersion agent mixing, make carbon black and account for the granular of gross weight 20～60% or other form carbonarius masterbatch.The additive capacity that uses among the present invention is controlled at and accounts for below 5% of carbonarius masterbatch gross weight.
Therefore, the carbonarius masterbatch that is used to produce agricultural mulch films of the present invention includes polythylene resin, carbon black, additive, and amounts of carbon black accounts for 20～60% of colour batch weight, it is characterized in that: employed carbon black is particle diameter 20～30nm, OBP absorption value 80～120cm
3/ 100g, tinting strength 100～110%, and contain the carbon black that accounts for the active function groups of carbon black weight more than 2%, employed additive capacity accounts for below 5% of colour batch weight.
The carbonarius masterbatch of making, can be according to actual requirement, for example new LDPE (film grade), linear low density polyethylene, high density polyethylene(HDPE) etc. are mixing with the blowing level polyethylene of specified amount, after being diluted to several times to tens times, with common film-blowing process, produce the following agricultural mulch films of thickness 0.01mm.
Use plastic sheeting for farm use of the present invention with carbon black and colour batch thereof,, can produce agricultural mulch films, significantly reduce the production cost of plastic sheeting for farm use with conventional film-blowing process than the thin micron order thickness over half of black agricultural membrane commonly used with blowing level polyethylene polymerization; And can make product plastic sheeting for farm use smooth surface, thickness is even; Can also keep the good physical strength of plastic sheeting for farm use, resistance of aging, thermotolerance etc., this plastic sheeting for farm use still can completely reclaim after being used to plant 3～4 season crops, not contaminated land.
Embodiment
Particle diameter 25nm, OBP absorption value 108cm
3/ 100g, the furnace treated black of tinting strength 100%, after pulverizing through pneumatic jig, magnetic separation, particulate in turn, put into rotary type modification treater, carbon black is fully contacted with the gas that contains ozone, allow hydroxyl, carboxyl, lactone group isoreactivity functional group content in the carbon black bring up to and account for 2.5% of carbon black weight.
Carbon black after treatment is that 2g/10 divides above ldpe resin to cooperate in 3: 7 ratio with melting index, add the typical additives such as lubricant, the dispersion agent etc. that account for weight 4%, use the granulation of mixed milling type twin screw extruder, obtain the plastic sheeting for farm use carbonarius master batch that carbon black weight accounts for gross weight 30%.
With the carbonarius master batch of 10 fens weight, after 60 minutes new LDPE (film grade) of weight, 25 fens linear new LDPE (film grade)s, the mixing dilution of high density polyethylene(HDPE) in 5 fens, use the hollow blow molding method, made the black agricultural mulch films of thick 0.007～0.009mm.It is as follows that the black agricultural membrane of making is measured its physical and mechanical properties result respectively by GB1040-79, HG2-167-65.
Tensile strength, NPa: vertical 18.44
Horizontal 12.55
Tensile yield, %: vertical 317.5
Horizontal 302.5
Angle tear strength, KN/a: vertical 98.3
Horizontal 139.2
Claims (2)
1, a kind of carbon black that is used to produce agricultural mulch films has particle diameter 20～30nn, OOP absorption value 80～120cm
3/ 100g, tinting strength 100～110% is characterized in that: contain and account for the active function groups of this carbon black weight more than 2%.
2, a kind of carbonarius masterbatch that is used to produce agricultural mulch films includes polythylene resin, carbon black, additive, and amounts of carbon black accounts for 20～60% of colour batch weight, it is characterized in that: employed carbon black is to have particle diameter 20～30nm, OBP absorption value 80～120ca
3/ 100g, tinting strength 100～110% contains the carbon black that accounts for the active function groups of this carbon black weight more than 2%, and employed additive capacity accounts for below 5% of colour batch weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92104960 CN1066862A (en) | 1992-06-18 | 1992-06-18 | Plastic sheeting for farm use carbon black and colour batch thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92104960 CN1066862A (en) | 1992-06-18 | 1992-06-18 | Plastic sheeting for farm use carbon black and colour batch thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1066862A true CN1066862A (en) | 1992-12-09 |
Family
ID=4941102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92104960 Pending CN1066862A (en) | 1992-06-18 | 1992-06-18 | Plastic sheeting for farm use carbon black and colour batch thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1066862A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101033309B (en) * | 2006-03-09 | 2010-04-21 | 中国石油化工股份有限公司 | Color masterbatch for polythene and preparing method thereof |
| CN102517032A (en) * | 2011-12-08 | 2012-06-27 | 董广林 | Fully-degradable liquid medical membrane for paddy field |
| CN103709778A (en) * | 2013-12-18 | 2014-04-09 | 成都菲斯特化工有限公司 | Carbon black master batch for herbicide-containing plastic mulching films and preparation method thereof |
-
1992
- 1992-06-18 CN CN 92104960 patent/CN1066862A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101033309B (en) * | 2006-03-09 | 2010-04-21 | 中国石油化工股份有限公司 | Color masterbatch for polythene and preparing method thereof |
| CN102517032A (en) * | 2011-12-08 | 2012-06-27 | 董广林 | Fully-degradable liquid medical membrane for paddy field |
| CN103709778A (en) * | 2013-12-18 | 2014-04-09 | 成都菲斯特化工有限公司 | Carbon black master batch for herbicide-containing plastic mulching films and preparation method thereof |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |