A kind of agricultural soil moisture blocking agent and preparation method thereof
A soil moisture and retarder technology, used in agriculture, soil conditioning materials, agricultural machinery and implements, etc., can solve problems such as soil erosion protection by plastic film, and achieve the effects of preventing soil erosion, high application value, and reducing runoff.
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[0021] A kind of preparation method of agricultural soil moisture blocking agent of the present invention, concrete operation steps are as follows:
[0022] Step 1, weigh the following materials according to mass percentage: polycaprolactone 3-7%, polylactic acid 1-3%, γ-polyglutamic acid 50-55%, quartz sand 30-35%, chlorinated palm oil 3-7% of esters, 2-4% of glycerin, the sum of the mass percentages of the above components is 100%;
[0023] Step 2, Stir and mix all the materials weighed in Step 1 evenly, the stirring and mixing temperature is 50-60°C, and the stirring and mixing time is 10-24h; then put it into an extrusion granulator, and granulate in the extrusion granulator, The granulation temperature is 70-80° C. to obtain the moisture blocker, and the particle size of the moisture blocker particles is 0.5-2.8 mm.
Embodiment 1
[0026] Step 1, weigh the following materials: 30g of polycaprolactone with a molecular weight of 5000Da, 30g of polylactic acid with a molecular weight of 3000Da, 500g of γ-polyglutamic acid with a molecular weight of 10000Da, 350g of quartz sand, 70g of chlorinated palm oil methyl ester, Glycerin 20g.
[0027] Step 2, Stir and mix all the materials weighed in Step 1 evenly, the stirring and mixing temperature is 50°C, and the stirring and mixing time is 10h; At 70°C, a moisture blocking agent is obtained, and more than 97% of the particles in the moisture blocking agent have a particle size of 0.5-2.8mm.
Embodiment 2
[0029] Step 1, weigh the following materials: 70g of polycaprolactone with a molecular weight of 10000Da, 10g of polylactic acid with a molecular weight of 1500Da, 550g of γ-polyglutamic acid with a molecular weight of 80000Da, 300g of quartz sand, 30g of chlorinated palm oil methyl ester, Glycerin 40g;
[0030] Step 2, Stir and mix all the materials weighed in step 1 evenly, the stirring and mixing temperature is 60°C, the stirring and mixing time is 24h, and then put into the extrusion granulator, and granulate in the extrusion granulator, the granulation temperature is At 80°C, a moisture blocker is obtained, and more than 97% of the particles in the moisture blocker have a particle size of 0.5-2.8mm.
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