KR100553970B1 - Resin composition for mulching film with anti-insect and anti-rat ability - Google Patents

Abstract

The present invention relates to a resin composition for mulching film with added insect repellent and anti-defense, and more particularly, consisting of a basic resin, antioxidant, ultraviolet absorber, ultraviolet scattering agent, red wavelength generating light-retaining agent, insect repellent, anti-deterrent, root hump Insect repellent and antiseptic properties can inhibit the growth of nematodes, increase the growth of fruits and vegetables, and also inhibit the access of rodents such as mosquitoes, flies and other insects, especially rats that damage crops. It relates to the resin composition for mulching film added.

Description

RESIN COMPOSITION FOR MULCHING FILM WITH ANTI-INSECT AND ANTI-RAT ABILITY}

The present invention relates to a resin composition for mulching film with added insect repellent and anti-defense, and more particularly, consisting of a basic resin, antioxidant, ultraviolet absorber, ultraviolet scattering agent, red wavelength generating light-retaining agent, insect repellent, anti-deterrent, root hump Insect repellent and anti-detoxity can inhibit the growth of nematodes, increase the growth of fruits and vegetables, and also inhibit the access of rodents such as mosquitoes, flies and other rats that damage crops. It relates to the resin composition for mulching film added.

Agricultural mulching films cover the roots of crops to prevent the winter crops and to prevent the evaporation of moisture in the soil with the effect of increasing the temperature, and straw has been used since the mid 80s. It is being used as a film. The function of the mulching film has a function of removing pests such as viruses and aphids by blocking the light on the surface of the earth in addition to the warming effect of geothermal, remediation in the soil, and repair effect. Previously developed mulching films include primary color mulching film, black mulching film, color mulching film, black and white mulching film, silver gray mulching film, and midwife mulching film, and their respective functions and product structure are as follows.

The primary color mulching film is a thin film of high-density polyethylene film with its own base resin, which has a simple thermal insulation effect.The black mulching film blocks light with black color to prevent the growth of weeds and pests, improve film weatherability and fertilizer Has an excessive decomposition prevention effect. The color mulching film is a double layer, and the black layer at the edge blocks the light to obtain the effect of the black mulching film, and the primary color layer at the center induces an increase in temperature through light transmission. In addition, black and white mulching film reflects and blocks light with white color on the surface to suppress the fall of geothermal and growth of weeds and pests, and it is mainly used for high cold areas because of its excellent water retention. The surface part is white and the ground contact part is black. have. The silver gray mulching film reflects light with silver gray on the surface to prevent the growth of pests, and it blocks the light with double film to prevent the growth of weeds and pests. It is used for high temperature and the surface part is composed of silver gray and the ground contact part is made of black. The midwife mulching film with a special structure is a function that facilitates seed sowing on general mulching film and is cut in the horizontal and vertical directions.

The agricultural mulching film is a primary color, black, or white film to prevent the heat absorbing effect, and endothermic to provide sunlight suitable for the growing environment of the crop in order to properly create the weather conditions of the crop grown in the green house or outdoor farmland It keeps warm effect at night or winter and suppresses the occurrence of pests caused by over-humidity. Toxic insecticides such as methyl bromide have been used to kill root-knot nematodes in the soil. However, the insecticide method is harmful to the human body when spraying insecticides and when used for food.

An object of the present invention can suppress the growth of root-knot nematodes reported to be the most serious of the pest damage of crops, increase the growth of fruits, vegetables, etc. growing on the surface or ground stems, and also in the worker's green house or outdoor farmland To provide a composition of insecticides, insect repellents, etc., agricultural mulching film, especially red mulching film that can inhibit the access of pests, such as mosquitoes, flies, etc., which hinders the work environment, and particularly rodents, such as rats that damage crops. will be.

The resin composition for mulching film of the present invention is characterized by consisting of a basic resin, antioxidant, ultraviolet absorber, ultraviolet scattering agent, red wavelength generating light-retaining agent, insect repellent and antiseptic agent.

In the resin composition for mulching films of the present invention, the basic resin is a melt index of 0.1 to 2.0 g / 10 minutes, a low density polyethylene having a density of 0.920 to 0.928 g / cm 3 (hereinafter referred to as LDPE), and a melt index of 0.1 to 3.0 g /. 10 minutes, linear low density polyethylene (hereinafter referred to as LLDPE) with a density of 0.920 to 0.936 g / cm 3, a mixture of the low density polyethylene and linear low density polyethylene, or a melt index of 0.01 to 2.0 g / 10 minutes, density of 0.940 to 0.965 g / cm 3 High density polyethylene (hereinafter referred to as HDPE) is used.

In the present invention, as the antioxidant, methylene (3, 5-diterriary-butyl-4-hydroxyphenyl) propionate and dietary-butyl-hydroxytoluene can be used, and as the ultraviolet absorber Tetramethyl-pineridinyl-sebacate, titanium dioxide as an ultraviolet ray scattering agent, benzpinillium-squiarylium as a red wavelength generating light adjuvant, alkylaminobenzoate as an insect repellent, and permessilin as an antiseptic can be used.

The content of these additives is 0.1 to 0.2 parts by weight of the antioxidant, 0.1 to 0.2 parts by weight of the ultraviolet absorber, and 1 to 2 parts of the ultraviolet ray absorber based on 100 parts by weight of the basic resin in consideration of the properties of the resin composition and the effects of the addition of each additive. A weight part, 1-5 weight part of red wavelength generating light modifiers, 0.5-3 weight part of insect repellents, and 0.5-3 weight part of antiseptics are preferable.

The red mulching film made of the resin composition for mulching film of the present invention may be a single layer or a double layer structure, which reflects the wavelength of light that promotes the growth of the above-ground crops, increases productivity and distributes less energy to plant roots. Root-knot nematodes prevent nutrients from being eaten at the root of the food. The red mulching film made of the resin composition of the present invention can promote the production of crops at the same time and can suppress the growth of pests.

The present invention can be understood in more detail by the following comparative examples and examples, the following examples are only for illustrating the present invention and are not intended to limit the protection scope of the present invention.

Examples and Comparative Examples

Comparative Example 1

The film consists of a single layer, and the basic resin consists of HDPE with a melt index of 2.0 g / 10 minutes and a density of 0.950 g / cm 3. The additive consists of UV absorbers, antioxidants, and black pigments, which are basic prescriptions for agricultural mulching films.

Examples 1 to 24

The film is composed of a single layer, and according to the composition shown in Table 1, the basic resin is 0.5 g / 10 minutes of melt index, LDPE of 0.928 g / cm3 density, 2.0 g / 10 minutes of melt index, LLDPE of 0.930 g / cm3 density, A mixture of LDPE and LLDPE, or HDPE with a melt index of 2.0 g / 10 minutes and a density of 0.950 g / cm 3, was used as an additive to methylene (3,5-diaryther-butyl-4-hydroxyphenyl) propionate (Hereinafter referred to as "antioxidant 1"), deterriary-butyl-hydroxy toluene (hereinafter referred to as "antioxidant 2"), tetramethyl-piperidinyl-sebacate (hereinafter referred to as "ultraviolet absorber") ), Titanium dioxide (hereinafter referred to as "ultraviolet scattering agent"), benzpininium-squiaryllium (hereafter,

“Red wave generating light modifier”), alkylaminobenzoate (hereinafter referred to as “repellent”) and permessilin (hereinafter referred to as “preservative”) are put in a dry mixer, mixed for 30 minutes and then extruded mixer And melt mixed. The molten mixture was pelletized and then put into a film molding machine, and a performance evaluation test was performed after film molding. The results are shown in Table 2.

Root-knot nematode growth rate% is relative growth rate% based on the growth rate% of the comparative example 1, This test was implemented based on JISZ2911 method. In addition, since there was no standard method for quantitatively controlling insects, the inventors qualitatively evaluated the sensory evaluations. In addition, RED wavelength and reflectance were measured using an infrared spectrometer.

Table 1 (Unit: parts by weight)

HDPE LDPE LLDPE Antioxidants 1 Antioxidants 2 UV absorbers UV scattering agent Red bird generation light modifier Insect repellent Antiseptic Example 1 100 - - 0.05 0.05 0.2 One One One One Example 2 100 - - 0.05 0.05 0.2 One 2 One One Example 3 100 - - 0.05 0.05 0.2 One 3 One One Example 4 100 - - 0.05 0.05 0.2 One 5 0.5 0.5 Example 5 100 - - 0.05 0.05 0.2 2 2 3 3 Example 6 100 - - 0.05 0.05 0.2 One 5 One One Example 7 - 100 - 0.05 0.05 0.2 One One One One Example 8 - 100 - 0.05 0.05 0.2 One 2 One One Example 9 - 100 - 0.05 0.05 0.2 One 3 One One Example 10 - 100 - 0.05 0.05 0.2 One 5 One One Example 11 - 100 - 0.05 0.05 0.2 2 2 0.5 0.5 Example 12 - 100 - 0.05 0.05 0.2 2 5 3 3 Example 13 - - 100 0.05 0.05 0.2 One One One One Example 14 - - 100 0.05 0.05 0.2 One 2 One One Example 15 - - 100 0.05 0.05 0.2 One 3 One One Example 16 - - 100 0.05 0.05 0.2 One 5 One One Example 17 - - 100 0.05 0.05 0.2 2 2 0.5 0.5 Example 18 - - 100 0.05 0.05 0.2 One One 3 3 Example 19 - 70 30 0.05 0.05 0.2 One One One One Example 20 - 70 30 0.05 0.05 0.2 One 2 0.5 0.5 Example 21 - 70 30 0.05 0.05 0.2 One 3 3 3 Example 22 - 70 30 0.05 0.05 0.2 One 5 One One Example 23 - 70 30 0.05 0.05 0.2 2 2 One One Example 24 - 70 30 0.05 0.05 0.2 One One One One

TABLE 2

As can be seen in Table 2, the growth rate of root-knot nematodes was significantly suppressed by using the resin composition of the present invention consisting of a basic resin, an antioxidant, an ultraviolet absorber, an ultraviolet scattering agent, a red wavelength generating light modifier, an insect repellent, and an anti-detergent agent. Excellent anti-air property was obtained.

As can be seen from the above, the resin composition according to the present invention, in addition to the additives added to the general mulching film, the addition of red pigment reflecting red light and ultraviolet scattering agent to increase the harvest of crops and inhibit the growth rate of root nodules nematode pests In addition, it has an excellent effect of suppressing the access of pests such as mosquitoes, flies, and rodents such as rats by adding insect repellents and insect repellents.

Claims (3)

0.1 to 0.2 parts by weight of antioxidant, 0.1 to 0.2 parts by weight of ultraviolet absorber, 1 to 2 parts by weight of ultraviolet light scattering agent, 1 to 5 parts by weight of red wavelength generating light-retaining agent, 0.5 to 3 parts by weight of insect repellent based on 100 parts by weight of basic resin, and A resin composition for mulching film, characterized in that consisting of 0.5 to 3 parts by weight of antiseptic agent. The resin composition for mulching film according to claim 1, wherein the base resin is made of low density polyethylene, linear low density polyethylene, a mixture of low density polyethylene and linear low density polyethylene, or high density polyethylene. The antioxidant according to claim 1, wherein the antioxidant is methylene (3, 5-diterialary-butyl-4-hydroxyphenyl) propionate and deterriary-butyl-hydroxytoluene, the ultraviolet absorber is tetramethyl-pineridinyl -Sebacate, UV scattering agent is titanium dioxide, red wavelength generating light-retaining agent is benzpininium-squiarylium, insect repellent alkylamino benzoate, antiseptic agent for mulching film resin composition, characterized in that.