Tree sticker capable of being used for repairing wounds, filling gaps, slowly releasing medicines and reinforcing strength

A tree sticker and drug technology, applied in the field of chemical materials and plant wound healing and protection, can solve the problems of thin film, difficult to fix, fragile and easy to break the trunk, and aggravate the risk of tree death.

Active Publication Date: 2021-02-02
崔婉琪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a tree has a wound, the wound surface is susceptible to infection, and the trunk is difficult to fix and is fragile and easy to break. Many factors increase the risk of tree death
[0003] The current common methods such as spraying can only provide medical treatment, but fail to provide protection. Paint coating can only prevent foreign objects from re-invading, but cannot strengthen the tree trunk. Iron sheet reinforcement can only strengthen the tree’s ability to withstand pressure, but it cannot cure it Diseases of the tree itself, these methods are single-purpose and do not provide comprehensive protection
[0004] Most of the fruit tree wound healing protective agents in the prior art are liquid protective agents, which form a protective film on the wound site, but the film formed by it is very thin and cannot release the drug for a long time; it cannot fill the wound and cannot provide a sufficient physical barrier; And the liquid is easy to drip during use, causing soil pollution

Method used

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  • Tree sticker capable of being used for repairing wounds, filling gaps, slowly releasing medicines and reinforcing strength
  • Tree sticker capable of being used for repairing wounds, filling gaps, slowly releasing medicines and reinforcing strength
  • Tree sticker capable of being used for repairing wounds, filling gaps, slowly releasing medicines and reinforcing strength

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Effect test

preparation example Construction

[0120] The present invention also provides a preparation method of the gum, comprising the steps of:

[0121] (i) providing an aqueous solution of a divalent metal salt, an aqueous solution of polyvinyl alcohol, and optionally an aqueous solution of a drug;

[0122] (ii) mixing the above-mentioned solutions in proportion to obtain a mixed solution; and

[0123] (iii) freezing and thawing the mixed solution obtained in step (ii) at low temperature to obtain the gum.

[0124] In step (ii), there is no special requirement on the mixing order, and the mixing can be done simultaneously or sequentially.

[0125] Those skilled in the art should understand that it is convenient to mix the divalent metal salt, PVA, and medicine after they are made into solutions, but mixing in other forms is also included within the scope of the present invention.

[0126] In a preferred embodiment, the method includes the steps of stirring and dissolving the PVA solution in hot water at 60-100°C, mi...

Embodiment 1

[0158] Preparation of gum

[0159] The gum is prepared according to the formula in Table 1. If there is no special instruction, by weight, the gained gum finally includes:

[0160] Table 1

[0161] CaCl 2

PVA Drugs (CuSO 4 )

Deionized water control group - 15 - 75 Freeze at -20°C Experimental group 1 10 15 - 75 Freeze at -20°C Experimental group 2 10 15 0.1g / mL 75 Freeze at -20°C Experimental group 3 10 15 - 75 room temperature

[0162] Specifically, the preparation steps are as follows: prepare CaCl with deionized water respectively 2 Solution (mix well at room temperature), PVA solution (heat at 75-80°C for about one hour), copper (II) sulfate solution (mix well at room temperature);

[0163] Mix the above solutions;

[0164] The mixture was frozen at -20°C for 24 hours and then thawed.

[0165]The results showed that when no metal salt was added for modification, the PVA aqueous solution could ...

Embodiment 2

[0167] Peel strength test

[0168] The steps are as follows: the wood is placed horizontally, and the surface of the wood is smoothed with sandpaper;

[0169] Draw an area 320mm long and 50mm wide on both sides of the wood;

[0170] Spread the sample evenly within the marked area, and then paste a carbon fiber cloth with a length of 420mm and a width of 50mm in the marked area;

[0171] Flatten the sample under the carbon fiber cloth, and spread the spilled sample evenly on the carbon fiber cloth, wrap it in plastic wrap and flatten it again;

[0172] After each sample was prepared, it was left to cure for seven days, and then the sample was placed under the tensile machine for testing, and the carbon fiber cloth at the end of the wood was fixed with the MTS machine, and then the sample was peeled off in the displacement control mode;

[0173] Then start the tensile test at a loading speed of 0.5mm per minute until the carbon fiber cloth begins to be pulled away from the woo...

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PUM

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Abstract

The invention provides a tree sticker capable of being used for repairing wounds, filling gaps, slowly releasing medicines and reinforcing strength. Specifically, the tree sticker comprises a gum andpatch cloth, and the gum contains a divalent metal salt modified polyvinyl alcohol (PVA) hydrogel and a therapeutically effective quantity of medicines dispersed in the hydrogel optionally. The tree sticker has the comprehensive functions of repairing the wounds, filling the gaps, slowly releasing the medicines and reinforcing strength, and is particularly suitable for preventing and / or treating tree injuries and diseases of plants.

Description

technical field [0001] The invention relates to the fields of chemical materials and plant wound healing and protection, in particular to a tree paste which can be used for repairing wounds, filling gaps, slow-releasing medicines and reinforcing strength. Background technique [0002] In afforestation and fruit tree planting, tree injury and death are a major cause of economic loss. For example, natural disasters such as typhoons, broken branches of trees, man-made cuts such as grafting, infections, insect pests and other diseases often cause trees to stop healing or even die. When a tree has a wound, the wound surface is susceptible to infection, and the trunk is difficult to fix, fragile and easy to break. Various factors increase the risk of tree death. [0003] The current common methods such as spraying can only provide medical treatment, but fail to provide protection. Paint coating can only prevent foreign objects from re-invading, but cannot strengthen the tree trun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G13/00A01N59/20A01N25/24A01N25/34A01P3/00
CPCA01G13/00A01N59/20A01N25/24A01N25/34
Inventor 蔡培琳崔婉琪吴乐儿黄月亭叶宝莹何非同
Owner 崔婉琪
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