阅读说明：本技术 具有红外线反射效果的色母粒、遮阳膜及其制备方法 (Color master batch with infrared reflection effect, sun-shading film and preparation method thereof ) 是由 赵青 葛青青 于 2019-02-22 设计创作，主要内容包括：本发明揭示了一种具有红外线反射效果的遮阳膜,由以下重量百分比的组分组成：降温颜料黄16~20%；降温颜料红0.4~0.6%；降温颜料黑5.1~7.6%；钛白粉9.2~11.8%；紫外线吸收剂3.4~4.6%；光稳定剂A 8.4~9.6%；抗氧剂4.4~5.6%；聚乙烯树脂45~52.8%。本发明的有益效果主要体现在：由抗老化降温母粒制成的遮阳膜具有反射红外线功能,可广泛应用于户外森林等环境中使用的帐篷、遮阳网,在军事、民用上均可使用,可降低产品表面温度,达到节能环保作用,同时抗老化的特点有效提高了产品的使用寿命。(The invention discloses a sun-shading film with an infrared reflection effect, which comprises the following components in percentage by weight: cooling pigment yellow 16-20%; 0.4-0.6% of cooling pigment red; 5.1-7.6% of cooling pigment black; 9.2-11.8% of titanium dioxide; 3.4-4.6% of an ultraviolet absorbent; 8.4-9.6% of a light stabilizer A; 4.4-5.6% of an antioxidant; 45-52.8% of polyethylene resin. The invention has the following beneficial effects: the sun-shading film prepared from the anti-aging cooling master batch has the function of reflecting infrared rays, can be widely applied to tents and sun-shading nets used in environments such as outdoor forests and the like, can be used in military and civil use, can reduce the surface temperature of products, achieves the effects of energy conservation and environmental protection, and has the characteristics of anti-aging, so that the service life of the products is effectively prolonged.)

1. The color master batch with the infrared reflection effect is characterized in that: the paint consists of the following components in percentage by weight:

cooling pigment yellow 16-20%;

0.4-0.6% of cooling pigment red;

5.1-7.6% of cooling pigment black;

9.2-11.8% of titanium dioxide;

3.4-4.6% of an ultraviolet absorbent;

8.4-9.6% of a light stabilizer A;

4.4-5.6% of an antioxidant;

45-48% of polyethylene resin.

2. Sunshade film with infrared reflection effect, its characterized in that: consists of the masterbatch of claim 1 and a polyethylene plastic in a ratio of 1: 24.

3. The preparation method of the sun-shading film with the infrared reflection effect is characterized in that: the method comprises the following steps:

s1, conveying the cooling pigment yellow, the cooling pigment red, the cooling pigment black, the titanium dioxide, the ultraviolet absorbent, the light stabilizer A, the antioxidant and the polyethylene resin into a stirrer at normal temperature and normal pressure, stirring at the speed of 100-120 r/min for 30 minutes, and uniformly stirring and mixing to form a mixture;

s2, putting the mixture into a double-screw extruder for extrusion granulation, wherein the extrusion temperature is controlled to be 190-210 ℃;

s3, extruding to form material strips, cooling the material strips through a water tank, and then granulating in a granulator to obtain anti-aging cooling master batches;

s4, adding the anti-aging cooling master batch into polyethylene plastic according to the proportion of 4%, plasticizing and melting the raw materials through an extruder at 210-230 ℃, extruding the mixture through a T-shaped structure forming die at 250-280 ℃, casting the mixture in a sheet shape onto the roll surface of a cooling roller which rotates stably, cooling and shaping a diaphragm on the cooling roller, and rolling the product after traction and edge cutting to obtain the sunshade film.

Technical Field

The invention relates to the technical field of plastic coloring, in particular to color master batches with an infrared reflection effect, a sun-shading film and a preparation method thereof.

Background

Among the total radiant energy of sunlight, more than 99% is distributed in the visible region and the red and ultraviolet regions, the visible region accounts for about 50% of the total radiant energy of the sun, and the infrared region accounts for about 43%. The infrared ray has low frequency and insufficient energy, and can only penetrate into the gaps between atoms and molecules, so that the vibration of the atoms and the molecules is accelerated, the distance is enlarged, and the thermal motion energy is increased.

Generally, a tent, a sunshade film, an agricultural film and the like used outdoors do not have an infrared ray reflection function, and absorb a large amount of infrared rays under the irradiation of sunlight, so that not only is the temperature of the film itself increased, but also the temperature in the tent or the sunshade is high, and the sunshade effect is greatly reduced.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a sun-shading film with an infrared reflection effect.

The purpose of the invention is realized by the following technical scheme:

a sun-shading film with an infrared reflection effect comprises the following components in percentage by weight:

cooling pigment yellow 16-20%;

0.4-0.6% of cooling pigment red;

5.1-7.6% of cooling pigment black;

9.2-11.8% of titanium dioxide;

3.4-4.6% of an ultraviolet absorbent;

8.4-9.6% of a light stabilizer A;

4.4-5.6% of an antioxidant;

45-48% of polyethylene resin.

A sun-shading film with an infrared reflection effect is composed of the color master batches and polyethylene plastics in a ratio of 1: 24.

A method for preparing a sun-shading film with an infrared reflection effect comprises the following steps:

s1, conveying the cooling pigment yellow, the cooling pigment red, the cooling pigment black, the titanium dioxide, the ultraviolet absorbent, the light stabilizer A, the antioxidant and the polyethylene resin into a stirrer at normal temperature and normal pressure, stirring at the speed of 100-120 r/min for 30 minutes, and uniformly stirring and mixing to form a mixture;

s2, putting the mixture into a double-screw extruder for extrusion granulation, wherein the extrusion temperature is controlled to be 190-210 ℃;

s3, extruding to form material strips, cooling the material strips through a water tank, and then granulating in a granulator to obtain anti-aging cooling master batches;

s4, adding the anti-aging cooling master batch into polyethylene plastic according to the proportion of 4%, plasticizing and melting the raw materials through an extruder at 210-230 ℃, extruding the mixture through a T-shaped structure forming die at 250-280 ℃, casting the mixture in a sheet shape onto the roll surface of a cooling roller which rotates stably, cooling and shaping a diaphragm on the cooling roller, and rolling the product after traction and edge cutting to obtain the sunshade film.

Sunlight is an electromagnetic wave, which is divided into visible light 400nm-700nm and invisible light. The invisible light mainly comprises ultraviolet rays and infrared rays of 700 and 2500 nm. Approximately 5% of the solar radiation that strikes the surface of an object is ultraviolet light, which can be absorbed by ultraviolet absorbers, providing protection for the product within the sun shade film. At the same time, nearly 50% is infrared, and the result of infrared irradiation is absorption of radiation and accumulation of additional heat. The color, gloss and other mechanical properties of the product deteriorate over time upon exposure to light, and the temperature of the surface of the product increases considerably over ambient temperatures. The sun-shading film added with the infrared reflection pigment can effectively reflect infrared rays, and the temperature of a product in the sun-shading film is reduced under illumination, so that the cooling effect is achieved.

The invention has the following beneficial effects: the sun-shading film prepared from the anti-aging cooling master batch has the function of reflecting infrared rays, can be widely applied to tents and sun-shading nets used in environments such as outdoor forests and the like, can be used in military and civil use, can reduce the surface temperature of products, achieves the effects of energy conservation and environmental protection, and has the characteristics of anti-aging, so that the service life of the products is effectively prolonged.

Detailed Description

The following detailed description describes the invention in detail. These embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art in light of these embodiments are intended to be within the scope of the present invention.