A kind of highly weather-resistant light-shielding film and preparation method thereof

Abstract

The invention provides a highly weather-resistant light-shielding film and a preparation method thereof. The raw materials for the preparation of the high weather-resistant light-shielding film include the following components in parts by weight: 30-50 parts by weight of polyether-type TPU masterbatch, 15 parts by weight of carbon black-loaded nano-zinc oxide ~25 parts by weight, 10~20 parts by weight of activated carbon supported nano cerium oxide, and 1~5 parts by weight of silane coupling agent. The high-weather-resistant light-shielding film uses polyether-type TPU as the main material, and uses two kinds of specific black fillers together, so that the aging resistance and weather resistance of the high-weather-resistant light-shielding film are significantly improved under the premise of good mechanical properties. The excellent tensile strength is still maintained after 240 hours of ozone aging treatment; the high weather resistance light-shielding film is obtained by extrusion blow molding, the preparation process is simple, the energy consumption and cost are low, green and environmentally friendly, and is suitable for large-scale industrialization.

Description

A kind of high weather-resistant light-shielding film and preparation method thereof technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a high weather-resistant light-shielding film and a preparation method thereof. Background technique Blackout curtain is a kind of common decoration material, and full blackout curtain can be obtained in the following ways: one is in ordinary The shading coating is applied on textiles many times. The second is to add black shading silk to the textile during the weaving process. Laminate with ordinary textiles with light-shielding film. The first method will generate more waste gas and waste water during the coating process, and the coating The process is complicated, which increases the energy consumption of production, the cost is too high, and does not conform to the current environmental protection trend; the second method obtains To get blackout curtains, the gram of the fa...

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Problems solved by technology

However, the wear resistance and toughness of PVC black shading film are not good, and the mechanical properties of the shading film are difficult to meet the requirements of long-term application.

[0005] CN107868275A discloses a polyurethane TPU black full shading film and its application. The polyurethane TPU black full shading film is made of 74% polyurethane TPU, 18% carbon black and 8% copper chrome black powder The masterbatch is blown film, its thickness is 0.8-5 wires, and its width is 500-3300 cm. It has good waterproof and breathable performance, and can resist strong sunlight and infrared radiation; however, the polyurethane TPU black is full The aging resistance of the shading film is not high, and the service life is short

The full shading curtain composite fabric has a good shading rate and anti-ultraviolet ability, and also has a good heat and sound insulation effect; however, the TPU black shading film formula is relatively complicated, the cost of raw materials is high, and the weather resistance of the TPU material is not good. After long-term exposure to sunlight, it will become hard and brittle, making it difficult to continue to use

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