Flexible flame-retardant rubber curtain with high strength, long service life and good visual effect and preparation method thereof

Abstract

The invention provides a flexible flame-retardant rubber curtain with high strength, long service life and good visual effect, which realizes good flame retardance, high strength, long service life, good flattening performance, rich stereoscopic impression of pictures and bright and gentle picture quality, is easy to clean and convenient to prepare and does not need a curtain base for support. The flexible flame-retardant rubber curtain consists of the following components in parts by weight: 100 parts of natural rubber, 2-3.5 parts of vulcanizing agent, 0.8-1.5 parts of accelerant, 4-6 parts of zinc oxide, 2-3 parts of stearic acid, 20-30 parts of white carbon black, 10-15 parts of titanium dioxide, 25-35 parts of flame retardant and 8-30 parts of softener, and preferentially 3-3.5 parts of vulcanizing agent, 1-1.5 parts of accelerant, 4-5 parts of zinc oxide, 25-30 parts of white carbon black, 12-14 parts of titanium dioxide, 25-30 parts of flame retardant and 8-15 parts of softener. A preparation method comprises the following steps of: putting the natural rubber, zinc oxide, stearic acid, white carbon black, titanium dioxide, flame retardant and softener in a closed rubber mixing machine; performing rubber mixing at 95-105 DEG C for 13-17 minutes to obtain a rubber compound; adding the vulcanizing agent and the accelerant into the rubber compound; remilling in an open rubber mixing machine for 4-6 times and discharging sheet; and vulcanizing the rubber compound after the remilling in a vulcanizing machine.

Description

technical field [0001] The invention relates to a projection screen and a preparation method thereof, in particular to a flexible flame-retardant rubber screen with high strength, long service life and good visual effect and a preparation method thereof. Background technique [0002] With the rapid development of projection technology, the application of projection screens is gradually developing from research and teaching, business office fields to personal application fields such as home theaters. At present, projection screens on the market are mainly divided into soft screens, glass fiber screens, white plastic screens, and glass bead screens. Among them, the soft curtain is composed of a plastic curtain base layer and a PVC material layer. Various metal soft curtains are made by adding metal powder to the PVC material layer. This kind of curtain has the disadvantages that the metal on the surface of the curtain is easy to oxidize and produce rust. The glass fiber curta...

AI Technical Summary

Problems solved by technology

The glass bead curtain is composed of a polyester woven fabric layer and a glass bead layer. This type of curtain has the disadvantages that the glass beads coated on the surface are not resistant to abrasion, easy to fall off, and cannot be cleaned.

The common disadvantages of the above-mentioned curtains: 1. All the curtains are not fire-resistant, easy to burn, and cannot be used in places with high fire protection requirements

2. It needs plastic or woven fabric as the support of the curtain base, the structure is complex, and the curtain production process is cumbersome

3. Poor flattening performance, easy to curl, and creases after folding, which is not convenient for storage, transportation and processing

4. The reflectance of polarized light is small (up to 97%), and the maximum viewing angle is about 120°, so the visual effect of the projected screen on the existing screen is poor, the color is not full, and it is greatly disturbed by the ambient light source

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