A kind of preparation method of degradable agricultural mulch film for sugarcane planting

A technology for agricultural mulch and sugarcane, which is applied to the field of preparation of degradable agricultural mulch for sugarcane planting, can solve problems such as poor sealing effect, uneven soil, easy rupture, etc., and achieves the effects of stable humidity, reduced water evaporation, and reduced leaching.

Active Publication Date: 2020-06-12
山东隆昌新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Polyhydroxybutyrate copolyester is a kind of biopolymer polyester, which has good biocompatibility, biodegradation and bioabsorbability, but due to the shortcomings of the material itself, it has poor elasticity and poor sealing effect. Not only the effect of water retention and heat preservation is poor, but also due to the unevenness of the soil, it is easy to break during the tearing process, which greatly limits the application of polyhydroxybutyrate copolyester in agricultural mulch

Method used

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  • A kind of preparation method of degradable agricultural mulch film for sugarcane planting
  • A kind of preparation method of degradable agricultural mulch film for sugarcane planting
  • A kind of preparation method of degradable agricultural mulch film for sugarcane planting

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Experimental program
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Effect test

Embodiment 1

[0026] A method for preparing a degradable agricultural mulch film for planting sugarcane, comprising the steps of:

[0027] S1. Add 10kg of nano halloysite and 6kg of N-carbonyldiimidazole into 120kg of dimethyl sulfoxide and stir for 4 hours at a temperature of 90°C. Add 4kg of amino mono-blocked polydimethylsiloxane and continue stirring for 40 minutes, then filter , washed until neutral, and dried to obtain the first material;

[0028] S2. Add 20kg of the first material into 100kg of 35wt% formaldehyde solution and 2kg of saturated ammonia and mix evenly, then add 60kg of urea and 4kg of perchloric acid oxidized starch, heat up to 70°C for reflux for 4 hours, add 4kg of acetic acid during the reflux process, and adjust The pH value of the system is 7.1-7.4, and the stirring is continued for 2 hours to obtain the second material;

[0029] S3. Mix 60kg of the second material and 15kg of nano silicon dioxide evenly, then add 80kg of polyhydroxybutyrate copolyester, 2kg of po...

Embodiment 2

[0031] A method for preparing a degradable agricultural mulch film for planting sugarcane, comprising the steps of:

[0032] S1. Add 20kg of nano halloysite and 2kg of N-carbonyldiimidazole into 180kg of dimethyl sulfoxide and stir for 2h at a temperature of 96°C. Add 2kg of amino mono-blocked polydimethylsiloxane and continue stirring for 60min, then filter , washed until neutral, and dried to obtain the first material;

[0033] S2. Add 10kg of the first material to 200kg of 30wt% formaldehyde solution and 4kg of saturated ammonia and mix evenly, then add 40kg of urea and 10kg of perchloric acid oxidized starch, heat up to 60°C for reflux for 6 hours, add 2kg of acetic acid during the reflux process, and adjust The pH value of the system is 7.1-7.4, and the stirring is continued for 4 hours to obtain the second material;

[0034] S3. Mix 50kg of the second material and 25kg of nano silicon dioxide evenly, then add 40kg of polyhydroxybutyrate copolyester, 10kg of polylactic a...

Embodiment 3

[0036] A method for preparing a degradable agricultural mulch film for planting sugarcane, comprising the steps of:

[0037] S1. Add 12kg of nano halloysite and 5kg of N-carbonyldiimidazole into 135kg of dimethyl sulfoxide and stir for 3.5 hours. The stirring temperature is 92°C. Add 3.5kg of amino mono-capped polydimethylsiloxane and continue stirring for 45 minutes. , filtered, washed until neutral, and dried to obtain the first material;

[0038] S2. Add 12kg of the first material to 170kg of 32wt% formaldehyde aqueous solution and 3.5kg of saturated ammonia water and mix evenly, then add 45kg of urea and 8kg of perchloric acid oxidized starch, heat up to 63°C for reflux for 5.5h, and add 2.5kg during the reflux process Acetic acid, adjust the pH value of the system to 7.1-7.4, and continue to stir for 3.5h to obtain the second material;

[0039] S3. Mix 53kg of the second material and 22kg of nano silicon dioxide evenly, then add 50kg of polyhydroxybutyrate copolyester, 8kg...

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Abstract

The invention discloses a preparation method of a degradable agricultural plastic mulching film for planting sugarcanes. The preparation method comprises the following steps: adding nano-halloysite and N-carbonyldimidazole into dimethyl sulfoxide, stirring, adding amino mono-terminated polydimethylsiloxane, continuing to stir, filtering, washing until the mixture is neutral, and drying, so as to obtain a first material; adding the first material into a formaldehyde water solution, uniformly mixing saturated ammonium hydroxide ammonia water, adding urea, perchloric acid oxidized starch, heatingthe mixture for reflux, adding acetic acid in the reflex process, adjusting the pH value of the system to 7.1-7.4, and continuing to stir, so as to obtain a second material; uniformly mixing the second material with nano-silicon dioxide, adding polyhydroxybutyrate-hydroxyvalerate, polylactic acid, etherified starch, chitosan, a chelated organic titanate coupling agent, ground phosphate rock, fishbone dust, plant ash, sylvine, carboxymethylcellulose, magnesium oxide, polymetaphosphate and butyl oleate, carrying out extrusion and plasticizing, carrying out blow molding to obtain a film, coolingfor shaping, and reeling, so as to obtain the degradable agricultural plastic mulching film for planting sugarcanes.

Description

technical field [0001] The invention relates to the technical field of agricultural mulch, in particular to a method for preparing a degradable agricultural mulch for sugarcane planting. Background technique [0002] Sugarcane, scientific name: Saccharum officinarum, Saccharum genus, perennial tall solid herb, thick and well-developed rhizome, stalk height 3-6 meters, widely planted in southern tropical regions such as Taiwan, Fujian, Guangdong, Hainan, Guangxi, Sichuan, and Yunnan. Sugarcane is suitable for planting in places with fertile soil, sufficient sunshine, and large temperature difference between winter and summer, so as to reduce diseases, insects and weeds in sugarcane fields, and provide a water-retaining and fertile soil condition for sugarcane growth to fully meet the needs of its root growth, so that The root system plays an important role in absorbing water and nutrients better. [0003] Agricultural mulch can significantly reduce soil moisture evaporation,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L3/08C08L5/08C08L1/28C08L3/10C08L83/08C08K13/02C08K3/36C08K3/22C08K3/32C08J5/18A01G13/02
CPCA01G9/1438C08J5/18C08J2367/04C08J2401/28C08J2403/08C08J2403/10C08J2405/08C08J2467/04C08J2483/08C08K3/32C08K3/36C08K13/02C08K2003/222C08K2201/011
Inventor 严春兰翟情情
Owner 山东隆昌新材料科技股份有限公司
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