CN104694136A - Humic acid mulching film - Google Patents

Abstract

The invention discloses an environment-friendly humic acid mulching film. The humic acid mulching film comprises the following components in parts by mass: 40-90 parts of hydrochloric acid, 60-100 parts of nitric acid, 30-100 parts of sodium pyrophosphate, 40-90 parts of sodium hydroxide, 40-80 parts of cellulose glycolate, 30-100 parts of sodium lauryl sulfate, 30-80 parts of absolute ethyl alcohol, 40-90 parts of hexakis methoxymethyl melamine (HMMM), 40-90 parts of sodium silicate, 50-90 parts of glycerin and 100-120 parts of p-toluenesulfonic acid (TSA).

Description

Humic acid mulch film

Technical field

The invention belongs to a kind of environmental protection class humic acid mulch film, belong to light industry technical field of chemistry.

Background technology

From the data had now, the total area in the desert, arid area, the northwestward of our country very large, its distribution is very extensive, and the harm being subject to Desertification is more and more serious.The soil of China more than 80 percent all also exists the unfavorable phenomenons such as depletion, arid, salinization, is badly in need of carrying out different adjustments and control with suiting measures to local conditions.The salinization of the loss of soil, the Desertification in soil, soil and the problem of environmental pollution of soil have become the very serious stumbling-block delaying China's socio-economic development.

Although our country faces so serious Land, the method adopting plastics film to carry out proportion of crop planting is generally adopted by vast farmers.Use the plastics film technology of carrying out cultivating can meet the needs of the soil moisture conservation of farm crop, insulation, maintenance fertility, and then reach the object promoting that increasing crop yield increases income, this becomes ten multi-form agriculture in the world now and applies one of technology.The raw material of plastics film is polyvinyl chloride or polyethylene substantially, and raw material itself is had extraordinary physicals, light weight low price, but the plastics film be made up of this raw material can disappearance of still can not degrading in more than 100 year in nature after scrapping.Plastics film after use recycling is very difficult, and in soil, accumulation year in year out easily causes ecotope and serious " white pollution " of soil.In minimizing soil, plastics film is residual, the ecotope that protection is precious rare, and the most feasible the most effective method removing plastics film " white pollution " is exploitation and utilization and extention degradable biological mulch film.

Degradable biological film can be divided into solid mulch film and liquid ground film two type according to the state existed.The requirement of strength that solid biodegradable mulch film needs to consider that it is shaping, transport condition and paving execute process, its thickness is generally thick than plastic film many, price also can be higher than plastic film, and the overwhelming majority can't be degradable, so its application is subject to certain limitation.Liquid degradable mulch is because degradation property is excellent, with low cost, can spray the features such as film forming and received people's concern and promoted the use of in scene.

Summary of the invention

The object of this research is a kind of method in order to explore synthetic humic acids degradable liquid-state mulch film.The humic acid degradable liquid-state mulch film of these research and development utilizes brown coal to carry out modification to natural cellulose and black liquid, and black liquor again can as the extractant of humic acid, as the organic fertilizer needed for soil.This multifunctional degradable liquid-state mulch film thoroughly can solve the severe contamination that molasses waste liquid, black liquid, wine brewing waste liquid or starch waste liquor and plastic film bring to environment and soil, has merged again each feature of agricultural chemicals, fertilizer and plastic sheeting for farm use; Use rear soil to turn over, can be used as the modifying agent of soil; The scene that can realize sprays makes film; Can naturally emerge; Stronger etc. to the adaptive faculty of terrain environment.

The proportion by weight scope of this product is: hydrochloric acid 40-90, nitric acid 60-100, trisodium phosphate 30-100, sodium hydroxide 40-90, carboxymethyl cellulose 40-80, sodium lauryl sulphate 30-100, dehydrated alcohol 30-80, HMMM (HMMM) 40-90, water glass 40-90, glycerine 50-90, tosic acid (TSA) 100-120.

All reagent used is analytical pure class.

Embodiment

First, medication spoon takes three to four grams of brown coal in agate mortar, firmly repeatedly be ground to Powdered, after about 15 minutes to there is no macrobead, then the brown coal ground are placed on 100 object sub-sieves, roll sub-sieve, get the brown coal electronic balance leaking through sub-sieve and accurately take one to two gram, be placed in clean small beaker, add the nitric acid oxidation of 30%, then use magnetic stirrer 30 minutes, take off small beaker, add in sodium hydroxide solution and nitric acid to it, to neutrality, the brown coal in small beaker are transferred in 500 ml flasks.

15 grams of crystalline sodium pyrophosphates and 7 grams of sodium hydroxide are dissolved in 1000 ml waters, are mixed with trisodium phosphate alkali extract.Measure 150 milliliters of trisodium phosphate alkali extracts, pour in 500 ml flasks, shake mixing makes sample wetness.At flask lid constant voltage separating funnel, be placed on boiling water bath, heating extracting 2 hours, be interrupted shake Erlenmeyer flask, insoluble material is all sunk.Take off flask from water-bath, cool to room temperature, extract and residue are all filtered by vacuum pump, filtrate is transferred in 200 milliliters of volumetric flasks.

The carboxymethyl cellulose taking certain mass with electronic balance, in the small beaker of wash clean, adds 50 ml distilled waters, is placed on by small beaker in constant temperature blender with magnetic force and stirs, temperature is adjusted to 50-60 DEG C, stir about 30 minutes, till solution is dispersed transparence, cool for subsequent use; Take the sodium silicate (water glass) of certain mass respectively, sodium lauryl sulphate, tosic acid be placed in 3 small beakers respectively, add a small amount of distilled water and dissolve, for subsequent use; Then carboxymethyl cellulose clear solution is poured in the round-bottomed flask of 500 milliliters that magneton is housed, round-bottomed flask is fixed on iron stand, be placed in oil bath pan, unlatching constant-temperature heating magnetic stirring apparatus stirs, and temperature controls at 50-60 DEG C, slowly adds the humic acid solution of extraction, fully be uniformly mixed, add the HMMM of certain mass and the glycerine of certain mass again, stir 20 minutes, mix; Sodium dodecyl sulfate solution is added in round-bottomed flask, then at round-bottomed flask top, a constant pressure funnel is installed, pour tosic acid into, regulate constant pressure funnel that tosic acid is slowly added in round-bottomed flask, then heating oil bath is made, temperature is made slowly to rise to 130-140 DEG C, keep 10 minutes, and then regulate temperature to be down to 110-120 DEG C, react about 30 minutes, mixing solutions now shows as the uniform state of thickness, add sodium silicate aqueous solution wherein, stir, stopped reaction, cooling.

Claims (3)

1. the proportion by weight scope of this product is: hydrochloric acid 40-90, nitric acid 60-100, trisodium phosphate 30-100, sodium hydroxide 40-90, carboxymethyl cellulose 40-80, sodium lauryl sulphate 30-100, dehydrated alcohol 30-80, HMMM (HMMM) 40-90, water glass 40-90, glycerine 50-90, tosic acid (TSA) 100-120.

2. all reagent used is analytical pure class.

3. the humic acid degradable liquid-state mulch film of these research and development utilizes brown coal to carry out modification to natural cellulose and black liquid, and black liquor again can as the extractant of humic acid, as the organic fertilizer needed for soil.