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Novel sustained-release material and preparation method thereof

A slow-release material and a new type of technology, applied in botany equipment and methods, essential oils/fragrances, chemicals for biological control, etc., can solve the problem of short slow-release time and achieve high obturator rate, human body and The environment is green and safe, and the effect of avoiding the slow release time is too short

Active Publication Date: 2020-09-01
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcoming of the existing sustained-release material that the sustained-release time is too short, and to provide a novel sustained-release material and its preparation method

Method used

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  • Novel sustained-release material and preparation method thereof
  • Novel sustained-release material and preparation method thereof
  • Novel sustained-release material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Add 6.9 mg of cholesterol derivatives, 1300 μL of tert-butyl methacrylate, 65 μL of trimethylolpropane trimethacrylate, 13.6 mg of azobisisobutyronitrile, and 30 μL of oily yellow pigment into the test tube, shake evenly on the shaker, Standby as a continuous phase;

[0042] Add 105 μL of PEG40 and 1000 μL of rose essence into 1000 μL of water, shake evenly on a vortex shaker, and use it as a dispersed phase for later use;

[0043] Slowly add the mixed dispersed phase into the shaken continuous phase, shake on a vortex shaker to form a uniform and defect-free milky yellow gel emulsion, seal the test tube mouth containing the gel emulsion, and first heat it at 30°C React in a water bath for 4 hours, and then react in a water bath at 80°C for 2 hours to obtain a new type of slow-release material.

[0044] see figure 1 , figure 1 The appearance diagram of the slow-release material prepared for the embodiment, it can be seen that the slow-release material is cylindrical,...

Embodiment 2

[0046] Add 20.4 mg of silicon dioxide micro-nanoparticles, 3890 μL of acrylonitrile, 195 μL of trimethylolpropane trimethacrylate, 21.6 mg of dibenzoyl peroxide, and 30 μL of oily pink pigment into the test tube, shake evenly on a shaker, and use as Continuous phase standby;

[0047] Add 315 μL of Tween 20 and 3000 μL of essential oil into 3000 μL of water, shake evenly on a vortex shaker, and use it as a dispersed phase for later use;

[0048] Slowly add the mixed dispersed phase into the oscillating continuous phase, oscillate on a vortex shaker to form a uniform and defect-free pink gel emulsion, seal the test tube with the gel emulsion, and place it in a 30°C water bath React in a pot for 4 hours, and then react in a water bath at 80°C for 2 hours to obtain a new type of slow-release material.

[0049] see figure 2 , figure 2 The appearance diagram of the slow-release material prepared for the embodiment, it can be seen that the appearance of the slow-release material i...

Embodiment 3

[0051] Mix 144 mg ferric oxide micro-nanoparticles, 300 μL glycidyl methacrylate, 700 μL butyl acrylate, 200 μL ethylene glycol dimethacrylate, 340 μL trimethylolpropane trimethacrylate, 10 μL oily blue pigment Add to the test tube, shake evenly on the shaker, and use it as the continuous phase for later use;

[0052] Add 160 μL of PEG40, 72 mg of potassium persulfate, 320 μL of wormwood and 160 μL of Acorus essential oil into 320 μL of water, shake evenly on a vortex shaker, and use it as a dispersed phase for later use;

[0053] Slowly add the mixed dispersed phase into the shaken continuous phase, shake on a vortex shaker to form a uniform and defect-free yellow gel emulsion, seal the test tube mouth containing the gel emulsion, and place in a 90°C water bath React in medium for 4 hours to obtain the new sustained-release material.

[0054] The slow-release material has a volume of 2.6cm 3 It is environmentally friendly and non-toxic, and the slow-release time is about 30...

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Abstract

The invention discloses a novel sustained-release material and a preparation method thereof, and belongs to the field of sustained-release materials. According to the method, the variety and using amount of a stabliizing agent are adjusted, the volume ratio of adispersionphase to acontinuous phase is controlled, a water-in-oil type gel emulsion which is uniform in foam pore distribution, high in closed pore rate, relatively thick in pore wall and about 20-100 microns in pore size is prepared, completely embedding of a sustained-release agent into the closed pore structure is realized, andheating polymerization is carried out to obtain a novel green sustained-release material. As the sustained-release agent is completely embedded in the dispersion phase with the closed-pore structure, the sustained-release agent can only be slowly released from the free volume of the continuous-phase high polymer material through three steps of adsorption, permeation and desorption, and the problem thatthe sustained-release time is too short due to external light and heat is effectively avoided. The novel sustained-release material disclosed by the invention is diversified in molding method and rich in application form.

Description

technical field [0001] The invention belongs to the field of slow-release materials, in particular to a novel slow-release material and a preparation method thereof. Background technique [0002] Aromatic smell can enter the pituitary gland from the respiratory system through the human body's sense of smell, adjust its own endocrine, relieve depression, anxiety and other negative emotions, and the aromatic smell can also purify the air and optimize the environment. In addition, some special raw materials, such as peppermint, camphor, calamus, wormwood and other Chinese herbal essential oils, can repel mosquitoes and refresh the mind, making the environment safe and the human body comfortable. Plant essential oils are unique aromatic substances extracted from the flowers, leaves, roots, bark, fruits, seeds, etc. of herbaceous plants by distillation and pressing. Due to their small molecules and fast volatilization speed, their fragrance and efficacy are limited. Can last for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F289/00C08F220/18C08F222/14C08F220/44C08F218/08C08F2/44C08K3/36C08K3/22A01N65/40A01N25/18A01P17/00C11B9/00
CPCC08F289/00C08F218/08C08F2/44C08K3/36C08K3/22A01N65/00A01N65/40A01N65/12A01N25/18C11B9/00C08K2201/011C08K2003/2275C08K2003/2241C08K2003/2296C08F220/1804C08F220/44C08F222/102C08F222/103
Inventor 房喻何怡楠刘姣姣王佩
Owner SHAANXI NORMAL UNIV
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