Preparation method of silicone oil with mosquito-repelling and mosquito-repelling effects and mosquito-repelling and mosquito-repelling fabric

Abstract

The invention provides silicone oil with mosquito repelling and repelling effects, a preparation method of the silicone oil and a preparation method of mosquito repelling and repelling fabric. The silicone oil is prepared from hydrogen-terminated silicone oil, allyl epoxy polyether, a chloroplatinic acid complex, polyether amine, isophorone diisocyanate, hexamethylene diisocyanate, deet and glacial acetic acid. The preparation method comprises the following steps: preparing polyether epoxy silicone oil A; preparing polyurethane modified block silicone oil C; preparing functional silicone oil D with mosquito-repelling and mosquito-avoiding effects; preparing a water-soluble emulsion; finally, the fabric has mosquito-repelling and mosquito-avoiding effects; the invention has the following advantages: the mosquito repellent effect is lasting: the cross-linking film-forming property of polyurethane improves the washability of the material, so that the durability of the mosquito repellent effect is improved. The preparation method is simple, convenient to operate and suitable for large-scale industrial production.

Description

Technical Field

[0001] The invention relates to the technical field of silicone oil additives, and in particular to a method for preparing silicone oil with mosquito repellent effects and a mosquito repellent fabric. Background Art

[0002] 1) Background of Related Technology: With improved living standards, people's demands for functional clothing are also increasing. Preventing mosquito bites is a major concern in people's lives. Traditional mosquito prevention measures mainly use chemically synthesized insect repellents such as DEET. However, these repellents often have certain biotoxicity and pose a potential threat to human health. In addition, these repellents have a short lifespan and require frequent reapplication, which brings inconvenience to people's lives.

[0003] 2) Existing solutions: Existing technologies primarily prevent mosquito bites by coating fabrics with chemically synthesized insect repellents such as DEET. While this method can provide some mosquito repellent effectiveness, the biotoxicity of DEET and other insect repellents poses a potential threat to human health. Furthermore, these repellents have a short lifespan and require frequent reapplication, creating inconvenience for people.

[0004] 3) Problems of existing technologies: Existing mosquito repellent technologies have the following problems in practical applications: First of all, existing mosquito prevention measures mainly use chemically synthesized insect repellents such as DEET, but these insect repellents often have certain biological toxicity and pose a potential threat to human health.

[0005] Secondly, these insect repellents have a short service life and need to be reapplied frequently, which brings inconvenience to people's lives. In addition, existing mosquito repellent technologies often require the use of large amounts of organic solvents during the preparation process, which not only increases production costs but also pollutes the environment.

[0006] Therefore, how to develop a mosquito repellent technology that can prevent mosquito bites, is harmless to the human body, and has a long service life is an urgent problem to be solved in this field.

[0007] Compared with the existing technology, this technical solution mainly solves the following problems: Existing mosquito prevention measures mainly use chemically synthesized insect repellents such as DEET, but these repellents often have certain biological toxicity and pose a potential threat to human health.

[0008] These insect repellents have a short service life and require frequent reapplication, which brings inconvenience to people's lives.

[0009] Existing mosquito repellent technologies often require the use of large amounts of organic solvents during the preparation process, which not only increases production costs but also pollutes the environment.

[0010] How to develop a mosquito repellent technology that can prevent mosquito bites, is harmless to the human body, and has a long service life. Summary of the Invention

[0011] The present invention aims to solve the problem of mosquito repellent effect of fabrics in the prior art and provides a silicone oil with mosquito repellent effect for use on fabrics. The present invention also discloses a method for preparing the silicone oil with mosquito repellent effect and mosquito repellent fabrics. The preparation method has simple process steps, strong operability, low equipment requirements, low investment, and is suitable for large-scale industrial production.

[0012] In order to achieve the above object, the present invention adopts the following technical solutions: A silicone oil with mosquito repellent effect, calculated by weight, 1000-3000g of hydrogen-terminated silicone oil, Allyl epoxy polyether 150-400g, Chloroplatinic acid complex 0.5-3g, Polyetheramine 100-300g, Isophorone diisocyanate 28-60g, Hexamethylene diisocyanate 21-50g, DEET 47.8-68.8g, 15-30g glacial acetic acid.

[0013] Preferably, the hydrogen-terminated silicone oil is a polysiloxane having a hydrogen-terminated group.

[0014] Preferably, the allyl epoxy polyether is a polyether having an epoxy group; and the polyetheramine is a polyether having an amino group.

[0015] Preferably, the isophorone diisocyanate is a compound having an isocyanate group; and the hexamethylene diisocyanate is a compound having an isocyanate group.

[0016] Preferably, a method for preparing silicone oil having mosquito repellent effect comprises the following steps: Preparation of polyether epoxy silicone oil A: mixing hydrogen-terminated silicone oil and allyl epoxy polyether, adding chloroplatinic acid complex, and performing addition reaction under nitrogen atmosphere and solvent-free conditions to obtain polyether epoxy silicone oil A; Preparation of polyether amino modified block silicone oil B: introducing polyether amine into polyether epoxy silicone oil A, and reacting in the absence of solvent to obtain polyether amino modified block silicone oil B; Preparation of polyurethane modified block silicone oil C: mixing isophorone diisocyanate and hexamethylene diisocyanate with polyether amino modified block silicone oil B, and performing copolymerization reaction in the absence of solvent to obtain polyurethane modified block silicone oil C; Preparation of functional silicone oil D with mosquito repellent and mosquito-repellent effects: DEET and glacial acetic acid are reacted with the reserved isocyanate groups in the polyurethane-modified block silicone oil C to obtain a functional silicone oil D with mosquito repellent and mosquito-repellent effects that is quadruple-modified with polysiloxane, polyetheramine, polyurethane, and DEET.

[0017] A method for preparing a mosquito-repellent fabric comprises the following steps: Preparation of water-soluble emulsion: emulsifying silicone oil with mosquito repellent effect into water-soluble emulsion; Preparation of fabric with mosquito repellent and mosquito-avoiding effects: finishing and shaping the fabric with a water-soluble emulsion to obtain the fabric with mosquito repellent and mosquito-avoiding effects.

[0018] Preferably, the emulsification temperature of the water-soluble emulsion is controlled at 40-50° C., and the emulsification time is 2 hours.

[0019] Preferably, the fabric finishing temperature is controlled at 30-40°C, the setting temperature is controlled at 160-180°C, and the time is 3-5 minutes.

[0020] Preferably, the silicone oil with mosquito repellent effect is a silicone oil with mosquito repellent effect prepared by the present invention.

[0021] Preferably, the silicone oil with mosquito repellent effect is obtained by the preparation method of silicone oil with mosquito repellent effect of the present invention; the fabric is cotton, linen, silk, wool, polyester, nylon, spandex natural fiber or synthetic fiber fabric.

[0022] Therefore, the present invention has the following beneficial effects: This invention utilizes a novel polymer material that combines polyether segments, polyetheramine segments, and polyurethane groups on a polysiloxane backbone. This structural design not only provides excellent mosquito repellent and mosquito repellent properties, but also provides a soft feel, enhancing wearer comfort. Furthermore, the cross-linked film-forming properties of the polyurethane enhance the material's washability, thereby increasing the durability of the mosquito repellent effect. The present invention does not use any organic solvents during the preparation process, which not only reduces production costs but also reduces environmental pollution, thus having the advantage of being environmentally friendly. The preparation method of the present invention is simple, easy to operate, suitable for large-scale industrial production, and has broad market prospects; The mosquito repellent of the present invention has a long-lasting effect, avoiding the problem of frequent reapplication, bringing great convenience to people's lives. At the same time, because insect repellents such as DEET are already incorporated into the polymer material, there is no problem of biological toxicity and no potential threat to human health. The mosquito repellent effect of the present invention is not limited to short-term protection. Due to the cross-linked film-forming properties of the polyurethane, the mosquito repellent effect can be maintained for a long time, effectively solving the problem of short-term mosquito repellent effect in the prior art. Overall, compared with the prior art, the present invention not only has better mosquito repellent effect, but also has the advantages of being environmentally friendly, simple to operate, and having a long service life, making it an ideal mosquito repellent technology solution. DETAILED DESCRIPTION

[0023] The present invention will be further described below through specific embodiments.

[0024] In the present invention, unless otherwise specified, all percentages are by weight, all equipment and raw materials can be purchased from the market or are commonly used in the industry, and the methods in the following embodiments, unless otherwise specified, are conventional methods in the art.

[0025] Example 1 A silicone oil with mosquito repellent effect, calculated by weight, 1000g of hydrogen-terminated silicone oil, Allyl epoxy polyether 150g, Chloroplatinic acid complex 0.5g, Polyetheramine 100g, Isophorone diisocyanate 28g, Hexamethylene diisocyanate 21g, DEET 47.8g, 15g glacial acetic acid.

[0026] A method for preparing silicone oil with mosquito repellent effect, Prepared by the following method: Step 1: Prepare polyether epoxy silicone oil A: Mix 1000g of hydrogen-terminated silicone oil with 150g of allyl epoxy polyether, add 0.5g of chloroplatinic acid complex as a catalyst, and conduct an addition reaction under a nitrogen atmosphere in the absence of solvent. The reaction temperature is controlled at 110°C and the reaction time is 4 hours. After the reaction is completed, polyether epoxy silicone oil A is obtained. Step 2: Preparation of polyether amino-modified block silicone oil B: 100g of a polyetheramine with a molecular weight of 200 was introduced into the molecular backbone. This was mixed with the polyether epoxy silicone oil A prepared in Step 1 and reacted in the absence of solvent. The reaction temperature was controlled at 80°C for 4 hours. After completion of the reaction, polyether amino-modified block silicone oil B with a certain degree of polymerization was obtained. Step 3: Prepare polyurethane-modified block silicone oil C: Mix 28g of isophorone diisocyanate and 21g of hexamethylene diisocyanate with the polyether amino-modified block silicone oil B prepared in Step 2 and perform a copolymerization reaction in the absence of solvent. The reaction temperature is controlled at 70°C and the reaction time is 2 hours. After completion of the reaction, a macromolecular polyurethane-modified block silicone oil C is obtained. Step 4: Preparation of mosquito repellent and mosquito-repellent functional silicone oil D: 47.8 g of DEET and 15 g of glacial acetic acid were uniformly mixed and then reacted with the reserved isocyanate groups in the polyurethane-modified segmented silicone oil C prepared in Step 3 to obtain mosquito repellent and mosquito-repellent functional silicone oil D, which was quadruple-modified with polysiloxane, polyetheramine, polyurethane, and DEET. The reaction temperature was controlled at 40°C and the reaction time was 2 hours to obtain mosquito repellent and mosquito-repellent functional silicone oil D.

[0027] Example 2 A silicone oil with mosquito repellent effect, calculated by weight, 2000g of hydrogen-terminated silicone oil, Allyl epoxy polyether 350g, Chloroplatinic acid complex 1g, Polyetheramine 200g, Isophorone diisocyanate 35g, Hexamethylene diisocyanate 32g, DEET 52.8g, 22.5g glacial acetic acid.

[0028] A method for preparing silicone oil with mosquito repellent effect, Prepared by the following method: Step 1: Prepare polyether epoxy silicone oil A: Mix 2000g of hydrogen-terminated silicone oil with 350g of allyl epoxy polyether, add 1g of chloroplatinic acid complex as a catalyst, and conduct an addition reaction under a nitrogen atmosphere in the absence of solvent. The reaction temperature is controlled at 120°C and the reaction time is 5 hours. After the reaction is completed, polyether epoxy silicone oil A is obtained. Step 2: Prepare polyether amino-modified block silicone oil B: 200g of a polyetheramine with a molecular weight of 600 was introduced into the molecular backbone. This was mixed with the polyether epoxy silicone oil A prepared in Step 1 and reacted in the absence of solvent. The reaction temperature was controlled at 90°C for 5 hours. After completion of the reaction, polyether amino-modified block silicone oil B with a certain degree of polymerization was obtained. Step 3: Prepare polyurethane-modified block silicone oil C: Mix 35g of isophorone diisocyanate and 32g of hexamethylene diisocyanate with the polyether amino-modified block silicone oil B prepared in Step 2 and carry out a copolymerization reaction in the absence of solvent. The reaction temperature is controlled at 70°C and the reaction time is 3 hours. After completion of the reaction, a macromolecular polyurethane-modified block silicone oil C is obtained. Step 4: Preparation of mosquito repellent and mosquito-repellent functional silicone oil D: 52.8 g of DEET and 22.5 g of glacial acetic acid were uniformly mixed and then reacted with the reserved isocyanate groups in the polyurethane-modified segmented silicone oil C prepared in Step 3 to obtain mosquito repellent and mosquito-repellent functional silicone oil D, which was quadruple-modified with polysiloxane, polyetheramine, polyurethane, and DEET. The reaction temperature was controlled at 50°C and the reaction time was 3 hours to obtain mosquito repellent and mosquito-repellent functional silicone oil D.

[0029] Example 3 A silicone oil with mosquito repellent effect, calculated by weight, 3000g of hydrogen-terminated silicone oil, Allyl epoxy polyether 400g, Chloroplatinic acid complex 3g, Polyetheramine 300g, Isophorone diisocyanate 60g, Hexamethylene diisocyanate 50g, DEET 68.8g, 130g glacial acetic acid.

[0030] A method for preparing silicone oil with mosquito repellent effect, Prepared by the following method: Step 1: Prepare polyether epoxy silicone oil A: Mix 3000g of hydrogen-terminated silicone oil with 1400g of allyl epoxy polyether, add 3g of chloroplatinic acid complex as a catalyst, and conduct an addition reaction under a nitrogen atmosphere in the absence of solvent. The reaction temperature is controlled at 130°C and the reaction time is 6 hours. After the reaction is completed, polyether epoxy silicone oil A is obtained. Step 2: Prepare polyether amino-modified block silicone oil B: Introduce 300g of a polyetheramine with a molecular weight of 1000 into the molecular backbone. Mix with the polyether epoxy silicone oil A prepared in Step 1 and react in the absence of solvent. The reaction temperature is controlled at 100°C and the reaction time is 6 hours. After completion of the reaction, polyether amino-modified block silicone oil B with a certain degree of polymerization is obtained. Step 3: Prepare polyurethane-modified block silicone oil C: Mix 60g of isophorone diisocyanate and 50g of hexamethylene diisocyanate with the polyether amino-modified block silicone oil B prepared in Step 2 and perform a copolymerization reaction in the absence of solvent. The reaction temperature is controlled at 70°C and the reaction time is 4 hours. After completion of the reaction, a macromolecular polyurethane-modified block silicone oil C is obtained. Step 4: Preparation of mosquito repellent and mosquito-repellent functional silicone oil D: 68.8 g of DEET and 30 g of glacial acetic acid were uniformly mixed and then reacted with the reserved isocyanate groups in the polyurethane-modified segmented silicone oil C prepared in Step 3 to obtain mosquito repellent and mosquito-repellent functional silicone oil D, which was quadruple-modified with polysiloxane, polyetheramine, polyurethane, and DEET. The reaction temperature was controlled at 60°C and the reaction time was 4 hours to obtain mosquito repellent and mosquito-repellent functional silicone oil D.

[0031] Test data Testing standard: GB / T 30126-2013 "Testing and evaluation of mosquito repellent properties of textiles".

Claims

1. A silicone oil having mosquito repellent effect, characterized in that: By weight, Hydrogen-terminated silicone oil 1000-3000g, Allyl epoxy polyether 150-400g, Chloroplatinic acid complex 0.5-3g, Polyetheramine 100-300g, Isophorone diisocyanate 28-60g, Hexamethylene diisocyanate 21-50g, DEET 47.8-68.8g, 15-30g glacial acetic acid.

2. The silicone oil having mosquito repellent effect according to claim 1, characterized in that: The hydrogen-terminated silicone oil is a polysiloxane having a hydrogen-terminated group.

3. The silicone oil having mosquito repellent effect according to claim 1, characterized in that: The allyl epoxy polyether is a polyether having an epoxy group; and the polyetheramine is a polyether having an amino group.

4. The silicone oil having mosquito repellent effect according to claim 1, characterized in that: The isophorone diisocyanate is a compound having an isocyanate group; the hexamethylene diisocyanate is a compound having an isocyanate group.

5. A method for preparing silicone oil having mosquito repellent effect, characterized in that: The following steps are involved: Preparation of polyether epoxy silicone oil A: mixing hydrogen-terminated silicone oil and allyl epoxy polyether, adding chloroplatinic acid complex, and performing addition reaction under nitrogen atmosphere and solvent-free conditions to obtain polyether epoxy silicone oil A; Preparation of polyether amino modified block silicone oil B: introducing polyether amine into polyether epoxy silicone oil A, and reacting in the absence of solvent to obtain polyether amino modified block silicone oil B; Preparation of polyurethane modified block silicone oil C: mixing isophorone diisocyanate and hexamethylene diisocyanate with polyether amino modified block silicone oil B, and performing copolymerization reaction in the absence of solvent to obtain polyurethane modified block silicone oil C; Preparation of functional silicone oil D with mosquito repellent and mosquito-repellent effects: DEET and glacial acetic acid are reacted with the reserved isocyanate groups in the polyurethane-modified block silicone oil C to obtain a functional silicone oil D with mosquito repellent and mosquito-repellent effects that is quadruple-modified with polysiloxane, polyetheramine, polyurethane, and DEET.

6. A method for preparing mosquito repellent fabric, characterized in that: The following steps are involved: Preparation of water-soluble emulsion: emulsifying silicone oil with mosquito repellent effect into water-soluble emulsion; Preparation of fabric with mosquito repellent and mosquito-avoiding effects: finishing and shaping the fabric with a water-soluble emulsion to obtain the fabric with mosquito repellent and mosquito-avoiding effects.

7. The method for preparing mosquito-repellent fabric according to claim 6, characterized in that: The emulsification temperature of the water-soluble emulsion is controlled at 40-50° C., and the emulsification time is 2 hours.

8. The method for preparing mosquito-repellent fabric according to claim 6, characterized in that: The fabric finishing temperature is controlled at 30-40° C., the shaping temperature is controlled at 160-180° C., and the time is 3-5 minutes.

9. The method for preparing mosquito-repellent fabric according to claim 6, characterized in that: The silicone oil having mosquito repellent effect is the silicone oil according to claim 1.

10. The method for preparing mosquito-repellent fabric according to claim 6, characterized in that: The silicone oil with mosquito repellent effect is prepared by the silicone oil preparation method according to claim 8; the fabric is a natural fiber or synthetic fiber fabric made of cotton, linen, silk, wool, polyester, nylon, and spandex.

Images