Slow-release composite material as well as preparation method and application thereof

A composite material and slow-release fertilizer technology, applied in the field of composite materials, can solve the problems of inability to form a dense slow-release film, cannot prevent the volatilization of chloride, and easy loss of nitrification inhibitors, so as to improve storage stability and storage stability The effect of high reliability and small footprint

Pending Publication Date: 2018-11-13
科丰兴泰(杭州)生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patented technology, the nitrification inhibitor is prone to loss during the high-temperature production process, and its water-retaining agent coating can easily cause problems such as storage stability.
[0010] CN103524272A discloses a spouted bed coating machine to wrap 2-chloro-6-trichloromethylpyridine (nitration inhibitor) solid and coating agent on the surface of nitrogen, phosphorus and potassium composite granular fertilizer at 80°C, and Add talcum powder as an anti-sticking agent to obtain the technology of compound fertilizer containing 0.2% to 0.4% of 2-chloro-6-trichloromethylpyridine, but talc powder cannot form a dense slow-release film and cannot prevent the release of chloropyridine volatile

Method used

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  • Slow-release composite material as well as preparation method and application thereof
  • Slow-release composite material as well as preparation method and application thereof
  • Slow-release composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1 Preparation of slow-release urea granular fertilizer of chloridine nitration inhibitor

[0046] (1) Urea fertilizer is the core. Weigh 2 kg of urea with a particle diameter of 3mm, add it to a drum-type coating machine with a diameter of 40cm-50cm, and rotate at a constant speed of 30rpm-500rpm. 200 g of ethyl chloropyridine solution with a concentration of 35 wt% was uniformly applied on the surface of the particles, and the rotation was continued to prevent agglomeration.

[0047] (2) Add 90g of 50-mesh diatomaceous earth pre-dried at 120°C into the drum of step (1) and stir well at 300rpm for 5 minutes to complete the inner coating (even if the fertilizer and inhibitor are coated In the first inorganic layer);

[0048] (3) Apply the organic matter to the drum in step (2), mix thoroughly for 5 minutes, then add 100 g of pre-dried 50 mesh diatomaceous earth, and continue to rotate for 5 minutes to obtain a slow-release fertilizer.

[0049] The slow-release fertilize...

Embodiment 2

[0080] Example 2 Preparation of slow-release urea granular fertilizer containing nitrification inhibitor and urease inhibitor

[0081] (1) Weigh 2kg of urea with a particle diameter of 3mm and 4g of nBPT into a drum-type coating machine with a diameter of 40cm-50cm, and rotate at a constant speed of 30rpm-70rpm. Apply 200g of a 30wt% chloropyridine acetone solution to the surface of the particles and continue to rotate to prevent agglomeration;

[0082] (2) Add 90g of 50-mesh diatomaceous earth pre-dried at 120°C into the drum of step (1) and stir it fully at 70rpm for 5 minutes to complete the inner coating (even if the fertilizer and inhibitor are coated In the first inorganic layer);

[0083] (3) Apply the organic matter to the drum of step (2), mix thoroughly for 5 minutes, then add 100 g of pre-dried 50 mesh diatomaceous earth, and continue to rotate for 5 minutes to obtain a slow-release fertilizer.

[0084] The slow-release fertilizer in step (3) is dried at 70°C to 100°C for ...

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Abstract

The invention provides a slow-release composite material. The slow-release composite material is prepared by compounding a first inorganic layer with a second inorganic layer through an organic matter, wherein the organic matter is a binding agent. According to the slow-release composite material provided by the invention, the raw materials are green and environment-friendly materials, so that theslow-release composite material is free of obvious residues in the soil and achieves environmental friendliness; the slow-release composite material can be used as a coating material; an inhibitor iscovered in the composite material, so that the loss of high-volatility effective components such as nitrapyrin is inhibited, and the storage stability is improved.

Description

Technical field [0001] The invention relates to a composite material, in particular to a material compounded by inorganic substances, which has a slow-release effect. It is used as a capsule material to coat an active substance, which can significantly delay the release of the active substance and is suitable for improving the fertilizer efficiency of chemical fertilizers. . Background technique [0002] Slow release refers to the extension of the dissolution (or volatilization) rate of substances through technical means. It is common in the field of formulations. By encapsulating the compound in a degradable material, the compound is gradually dissolved and released as the material is hydrolyzed / enzymatically, thereby delaying The drug release rate, reduce the absorption rate of the drug into the body, prolong the administration time, improve the patient's compliance, maintain a suitable blood drug concentration in the treatment window, and reduce the drug's toxic and side effec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/08C05G3/90
CPCC05B13/02C05C9/00C05G3/90C05G5/30C05G5/37C05D9/00Y02P60/21
Inventor 申有青崔婧黄璇
Owner 科丰兴泰(杭州)生物科技有限公司
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