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Low density, high surface strength polyurethane full water imitation wood material and preparation method thereof
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A wood-like material and high-surface technology, which is applied in the field of low-density, high-surface-strength polyurethane full-water imitation wood material and its preparation, can solve the problems of limited scope of application
Active Publication Date: 2018-02-23
SHANDONG INOV NEW MATERIALS CO LTD
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Problems solved by technology
Polyurethane imitation wood materials are usually divided into two types: 141B foaming system and full water foaming system. Among them, 141B foaming system is the current mainstream system, but 141B foaming system is not an environmentally friendlyfoaming agent. Its use is restricted; the all-water foaming system is environmentally friendly and safe, and its products have the characteristics of uniform density distribution, few bubbles, and basically no dark bubbles, so the development prospect is very bright, but the all-water foaming system has a free foam density lower than 100kg / m 3 When the surface hardness of the product is lower than Shorehardness D40, the scope of application is greatly limited. Therefore, it is urgent to develop a low-density, high-surface-strength polyurethane full-water imitation wood material to expand its scope of application.
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Embodiment 1
[0024] Low density, high surface strength polyurethane full water imitation wood material is prepared as follows:
[0025] In parts by weight, component A:
[0026]
[0027]
[0028] Component B:
[0029] Polymethylene polyphenylisocyanate.
[0030] The preparation method is as follows:
[0031] (1) Add YNW-4110, YNW-635C, YNW-310 and YNW-370S into the reaction kettle for stirring, then add B8444, H 2 O, Y-12, Y-27 and PC-41, stirred at room temperature for 10 minutes to obtain component A;
[0032] (2) Mix and react component A and component B according to the weight ratio of 1:1.1 to obtain a low-density, high surface strength polyurethane full-water imitation wood material. The test results are shown in Table 1.
[0033] Table 1 Example 1 product detection index
[0034]
Embodiment 2
[0036] Low density, high surface strength polyurethane full water imitation wood material is prepared as follows:
[0037] In parts by weight, component A:
[0038]
[0039]
[0040] Component B:
[0041] Polymethylene polyphenylisocyanate.
[0042] The preparation method is as follows:
[0043] (1) Add YNW-4110, YNW-635C, YNW-310 and YNW-370S into the reaction kettle for stirring, then add B8444, H 2 O, PC-5, Y-27 and PC-41, stirred at room temperature for 20 minutes to obtain component A;
[0044] (2) Mix and react component A and component B according to the weight ratio of 1:1.1 to obtain a low-density, high-surface-strength polyurethane full-water imitation wood material. The test results are shown in Table 2.
[0045] Table 2 Example 2 product detection index
[0046]
Embodiment 3
[0048] Low density, high surface strength polyurethane full water imitation wood material is prepared as follows:
[0049] In parts by weight, component A:
[0050]
[0051] Component B:
[0052] Polymethylene polyphenylisocyanate.
[0053] The preparation method is as follows:
[0054] (1) Add YNW-4110, YNW-635C, YNW-310 and YNW-370S into the reaction kettle for stirring, then add B8444, H 2 O, PC-5, Y-27 and PC-41, stirred at room temperature for 30 minutes to obtain component A;
[0055] (2) Mix and react component A and component B according to the weight ratio of 1:1.1 to obtain a low-density, high-surface-strength polyurethane full-water imitation wood material. The test results are shown in Table 3.
[0056] Table 3 Example 3 product detection index
[0057]
[0058] From Examples 1-3, it can be seen that the obtained polyurethane imitation wood products have the characteristics of low density and high hardness, and it is completely possible to prepare imitat...
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Abstract
The invention relates to a polyurethane all-water wood-imitation material with low density and high surface strength and a preparation method thereof, belonging to the technical field of polyurethane foaming plastic. The polyurethane all-water wood-imitation material is prepared from a component A and a component B; according to parts by weight, the component A is prepared from the following raw materials: 35 to 50 parts of polyether polyol A, 20 to 25 parts of polyether polyol B, 25 to 30 parts of polyether polyol C, 5 to 10 parts of polyether polyol D, 2.0 to 3.0 parts of foam stabilizer, 1.0 to 1.2 parts of chemical foaming agent and 1.2 to 4.5 parts of catalyst; the component B is polymethylene polyphenyl isocyanate. The preparation method of the polyurethane all-water wood-imitation material comprises the following steps of firstly, adding the polyether polyols into a reaction still for stirring, and subsequently adding the foam stabilizer, the chemical foaming agent and the catalyst to obtain the component A; secondly, mixing the component A with the component B for reacting to obtain the polyurethane all-water wood-imitation material. According to the polyurethane all-water wood-imitation material disclosed by the invention, at low free foam density, shorehardness can reach over D40, and the dimensional stability shrinkage is smaller than 0.5 percent. The preparation method of the polyurethane all-water wood-imitation material is simple and feasible.
Description
technical field [0001] The invention relates to a low-density, high-surface-strength polyurethane all-water imitation wood material and a preparation method thereof, belonging to the technical field of polyurethane foam plastics. Background technique [0002] In recent years, due to the excessive exploitation and utilization of forest resources, the ecological environment has deteriorated and soil erosion has been serious. However, with the gradual improvement of people's living standards, people's demand for wood has also increased. Therefore, the research and development of wood-like materials has become a A new field of technology. Resins that can be used as imitation wood materials include polyvinyl chloride, polyurethane, polystyrene, etc. Among them, polyurethane imitation wood materials have high rigidity and mechanical strength, and have the characteristics of simple production process and beautiful appearance of the product, which can be used perfectly Instead of w...
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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