阅读说明：本技术 一种投影屏幕板的制备方法 (Preparation method of projection screen plate ) 是由 杨新生 于 2019-10-26 设计创作，主要内容包括：本发明涉及一种投影屏幕板的制备方法,有以下步骤：1)将聚碳酸酯、丙烯酸树脂和有机硅混合均匀,干燥6小时,高速搅拌,得到高分子原材料；2)取溶剂红、炭黑、酞青蓝、分散剂、抗氧剂、聚碳酸酯,低速搅拌,加温至260-280℃,造粒,得到色彩纳米粒子；3)取步骤1)所述的高分子原材料和步骤2)所述的色彩纳米粒子,搅拌,加入挤出机组,挤出,得到厚度为1.5～2毫米的透射屏幕板。采用本发明所述方法制备的投影屏幕板可以达到物理无缝,屏幕可以随意设置大小,不需要拼接,所述投影屏幕解像力强,投射色彩还原度高,近距离观看清晰度高,低灰高光,没有蓝光,不刺眼,解决了投影幕布解像力差的问题。(The invention relates to a preparation method of a projection screen plate, which comprises the following steps: 1) uniformly mixing polycarbonate, acrylic resin and organic silicon, drying for 6 hours, and stirring at a high speed to obtain a high-molecular raw material; 2) taking solvent red, carbon black, phthalocyanine blue, a dispersing agent, an antioxidant and polycarbonate, stirring at a low speed, heating to 260 ℃ and 280 ℃, and granulating to obtain color nanoparticles; 3) stirring the polymer raw material in the step 1) and the color nanoparticles in the step 2), adding into an extruder set, and extruding to obtain the transmission screen plate with the thickness of 1.5-2 mm. The projection screen prepared by the method can achieve physical seamless, the screen can be randomly set in size without splicing, the projection screen has strong resolving power, high projection color reduction degree, high close-distance viewing definition, low gray, high light, no blue light and no glare, and the problem of poor resolving power of the projection screen is solved.)

1. A method for preparing a projection screen plate is characterized by comprising the following steps:

1) uniformly mixing polycarbonate, acrylic resin and organic silicon, drying for 6 hours, and stirring at a high speed for 15-20 minutes to obtain a high polymer raw material;

2) taking solvent red, carbon black, phthalocyanine blue, a dispersing agent, an antioxidant and polycarbonate (as a carrier), stirring at a low speed for 20 minutes, heating to 260 ℃ and 280 ℃, and granulating to obtain color nanoparticles;

3) stirring the polymer raw material obtained in the step 1) and the color nanoparticles obtained in the step 2), wherein the weight ratio of the polymer raw material to the color nanoparticles is 1: adding the mixture of 30 into an extruder set, and extruding to obtain the transmission screen plate with the thickness of 1.5-2 mm.

2. The method of claim 1, wherein: 60-70 parts of polycarbonate in the step 1); 1-5 parts of acrylic resin; the weight portion of the organic silicon is 25-30 portions.

3. The method of claim 1, wherein: the temperature for drying in step 1) was 120 ℃.

4. The method of claim 1, wherein: the high-speed stirring in the step 1) and the step 2) is 180 r/min.

5. The method of claim 1, wherein: 1-1.5 parts of solvent red in the step 2); 3-4 parts of carbon black; 2-3 parts of phthalocyanine blue; 1-1.5 parts of dispersant; 1-2 parts of antioxidant; 80-89 parts of polycarbonate.

6. The method of claim 1, wherein: the low-speed stirring in the step 2) is 80 revolutions per minute.

7. The method of claim 1, wherein: the extrusion method of the extruder set in the step 3) comprises the following steps: the extruder set is heated to 280 ℃, the speed of the feed inlet is 500 rpm, the speed of the screw is 800 rpm, the speed regulator of the pressure regulating roller is heated to 120 ℃, and the extrusion is carried out.

Technical Field

The invention relates to the field of projection screens, in particular to a method for preparing a projection screen plate.

Background

Projection screens are tools used in movies, offices, home theaters, large conferences, etc. to display images, video files, etc.

The selection of different space projection screens is different, for example, a wide viewing angle and low gain screen is suitable for the situation of more people watching or transversely watching, a narrow viewing angle and high gain screen is selected for long and narrow space watching, and a screen with proper gain is selected at the same time, so that the contrast of the screen is improved, the gray level of an image is increased, the color is bright, and the observability of the image is increased.

The large screen of the existing projection screen is formed by splicing small screens, and a physical gap between every two screens is large during splicing. Because the traditional projection screen can not be curled, the occupied area is large during transportation, and the transportation is inconvenient. The projection screen has poor resolution due to the physical defects of the screen cloth, low reduction degree of projection color, poor brightness effect and high light pollution, the brightness coefficient of the reflecting screen can only reach 0.36, only the front projection can be carried out, the rear projection can not be carried out, and the composite coating is not easy to clean and is not durable.

Disclosure of Invention

The invention aims to provide a method for preparing a projection screen plate, the projection screen plate prepared by the method has no splicing seam (seamless in vision and structure), the screen can be set at will without splicing, the projection screen has strong resolving power, high projection color reduction degree, high close-distance watching definition, low gray and high light, no blue light and no glaring, and the problem of poor resolving power of the projection screen is solved. The curling can also facilitate transportation and installation, the production and processing are convenient, and the service life is long.

The preparation method of the projection screen plate comprises the following steps:

1) uniformly mixing polycarbonate, acrylic resin and organic silicon, drying for 6 hours, and stirring at a high speed for 15-20 minutes to obtain a high polymer raw material;

2) taking solvent red, carbon black, phthalocyanine blue, a dispersing agent, an antioxidant and polycarbonate (as a carrier), stirring at a low speed for 20 minutes, heating to 260 ℃ and 280 ℃, and granulating to obtain color nanoparticles;

3) stirring the polymer raw material obtained in the step 1) and the color nanoparticles obtained in the step 2), wherein the weight ratio of the polymer raw material to the color nanoparticles is 1: adding the mixture of 30 into an extruder set, and extruding to obtain the transmission screen plate with the thickness of 1.5-2 mm.

60-70 parts of polycarbonate in the step 1); 1-5 parts of acrylic resin; the weight portion of the organic silicon is 25-30 portions.

The temperature for drying in step 1) was 120 ℃.

The high-speed stirring in the step 1) and the step 2) is 180 r/min.

1-1.5 parts of solvent red in the step 2); 3-4 parts of carbon black; 2-3 parts of phthalocyanine blue; 1-1.5 parts of dispersant; 1-2 parts of antioxidant; 80-89 parts of polycarbonate.

The low-speed stirring in the step 2) is 80 revolutions per minute.

The extrusion speed of the extruder in the step 3) is 80 rpm.

The extrusion method of the extruder set in the step 3) comprises the following steps: the extruder set is heated to 280 ℃, the speed of the feed inlet is 500 rpm, the speed of the screw is 800 rpm, the speed regulator of the pressure regulating roller is heated to 120 ℃, and the extrusion is carried out.

By adopting the method, the polycarbonate, the acrylic resin and the organic silicon are dried for 6 hours to remove water, and the 3 raw materials can be fully fused by stirring at a high speed. Because high-speed stirring friction can generate high temperature, the water which is not dried and completely evaporated from the raw materials can be evaporated; the composite material consisting of the solvent red, the carbon black, the phthalocyanine blue, the dispersant, the antioxidant and the polycarbonate is stirred at a low speed, so that the toner can be fully fused with the raw materials such as the polycarbonate and the like, and the toner cannot be developed at a certain temperature; heating the extruder to 280 ℃ can ensure that the composite raw material of the polymer raw material and the color nano particles is plasticized more thoroughly and uniformly, heating a large plastic extruder set to 280 ℃, the speed of a feed inlet is 500 rpm, the speed of a screw is 800 rpm, a speed regulator of a pressure regulating roller is heated to 120 ℃, and extruding, wherein the product processed at the speed and the temperature can ensure that a plurality of raw materials are fully fused without influencing the performance of the material, and a screen with the thickness of 1.5mm-3.0mm is obtained. The obtained projection screen has good color nanoparticle gain light-emitting effect, can be watched at a short distance, has high definition, and is not dazzled by blue light.

The projection screen manufactured by the method of the invention has the luminance coefficient of 0.49-0.51, the effective flash angle of 136-142, the screen surface resolution of 65-68/mm, the color of projection light of 68-72K and the uniformity of the screen surface luminance distribution of 85-87 percent.

The projection screen prepared by the method has high-definition color VIDEO images, can play VIDEO signals such as VCR, VCD, DVD, LD and the like in time, can also relay broadcast television, satellite television, cable television and internet network VIDEO in real time, and supports various VIDEO signals such as PLL, HDSDI, S-VIDEO, COMPOSITE, VIDEO, YUV, RGB, TV, HDTV, CATV and the like. The projection screen prepared by the method can be used for superposing the effects of character information, panorama, close-up, slow shot, special effects and the like on a television picture, and can also be edited and played in real time. The projection screen prepared by the method can play video signals from various devices, can switch different video sources at any time, can simultaneously monitor and switch the video sources through the video matrix, and can reduce or enlarge video pictures.

Detailed Description

The material described in this example:

polycarbonate (PC) was prepared using a saber base 0703R;

acrylic resin is prepared from 82PMMA obtained by Asahi Kasei Kogyo;

organosilicon adopts a Samsung 2000 type;

the solvent red adopts German Langshen;

the carbon black adopts Mitsubishi MA 100;

phthalocyanine blue is German BASF K7090;

the dispersant adopts the King of Japan flowers;

the antioxidant is Pasteur 1100.