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Application number: CN201710100213.5 Application date: February 23, 2017
Publication Number: CN106928588A Publication Date: July 7, 2017
[Applicant]Suzhou Nabeton Environmental Technology Co., Ltd. [Address]No. 999, Zhujiang South Road, Mudu Town, Wuzhong District, Suzhou City, Jiangsu Province 215000
[Inventor] Pan Minghua
[Patent Agency] Beijing Huizhisheng Intellectual Property Agency (General Partnership) 11346 [Agent] Wei Xiuli
[Country and Province Code] 32
[Abstract] The present invention provides a high-toughness heat-shrinkage-resistant artificial board and a preparation method thereof. The preparation method is as follows: (1) preparing modified silicon nitride; (2) mixing PVC resin, calcium zinc stabilizer, dioctyl phthalate, ultraviolet absorber #UV#327, and color powder in a high-speed mixer, adding kaolin, modified silicon nitride, 4,4'-diaminodiphenylmethane, sodium alcohol ether carboxylate, and artemisia seed gum, mixing again, and cooling to discharge the material; (4) refining the above-mentioned uniformly mixed materials in an open mill, forming triangular packages and pulling during the refining process, and finally thinning the sheets; (5) pressing the sheets in a pressure forming machine under high temperature and pressure, cooling after maintaining the pressure, and then pressurizing and cold pressing to obtain the artificial board. The high-toughness heat-shrinkage-resistant artificial board of the present invention has good dimensional stability and high bending strength.
[Sovereign Item] A method for preparing a high-toughness, heat-shrinkage-resistant artificial board, characterized by comprising the following steps: (1) adding β# silicon nitride submicron particles to a mixed solution of ethanol and isopropanol, wherein the mass ratio of ethanol to isopropanol is 1:3, uniformly dispersing the particles at a speed of 1000#1500r/min, then placing the particles in a constant temperature water bath at 60#80°C, adding a titanate coupling agent, stirring for 1#4h, then standing for 24h, washing and drying the particles, wherein the titanate coupling agent: β #Silicon nitride submicron particles: the mixed solution mass ratio is 3#5:100#120:500#600, and modified silicon nitride is obtained; (2) the following ingredients are weighed in parts by weight: 90#130 parts of PVC, 50#70 parts of kaolin, 20#40 parts of modified silicon nitride, 25#45 parts of dioctyl phthalate, 0.2#0.6 parts of calcium zinc stabilizer, 0.1#0.6 parts of ultraviolet absorber #UV#327, 1#4 parts of color powder, 4, 4'# diaminodiphenylmethane 0.02# 0.06 parts, sodium alcohol ether carboxylate 2# 9 parts, wormwood seed gum 10# 15 parts; #(3) PVC resin, calcium zinc stabilizer, dioctyl phthalate, ultraviolet absorber #UV#327, color powder were mixed on a high-speed mixer for 8# 18# min, kaolin, modified silicon nitride, 4,4'# diaminodiphenylmethane, sodium alcohol ether carboxylate, wormwood seed gum were added, and then mixed for 3# 8# min, and stirred at 80 (4) The mixed material is milled for 8-15 min with a front roller at 160-165°C and a rear roller at 155-160°C. During the milling process, triangular packages are formed and pulled, and finally thin sheets are produced. (5) Sheeting is performed using a pressure forming machine at a temperature of 130-145°C and a pressure of 6 MPa. After maintaining the pressure for 45 min, the sheet is cooled to 70°C, and then pressurized to 12 MPa and cold pressed for 10 min to obtain a wood-based board.