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A kind of vacuum insulation panel allowing arbitrary cutting and preparation method thereof
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A technology of vacuum heat insulation panel and vacuum hot pressing, applied in construction, building components, heat preservation and other directions, can solve the problems of difficult control of construction flatness, sudden drop in heat preservation performance of board, and many board seams, and achieve excellent heat insulation effect and Flame retardant effect, strong fixing effect
Active Publication Date: 2019-11-22
北京微纳宏创科技有限公司
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Problems solved by technology
Although the existing vacuum insulation panels have the advantage of good thermal insulation performance, they also have the following problems: the vacuum degree is difficult to maintain: if damage occurs, especially partial damage, the thermal insulation performance of the board will drop suddenly; secondly, it is used for building walls The construction process of the thermal insulation VIP board leads to too many board seams and too many thermal bridges, causing a high risk of condensation; moreover, the construction flatness is also difficult to control, and the risk of the thin plastering system falling off is also greater
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preparation example Construction
[0033] An embodiment of the present invention also provides a method for preparing a vacuum insulation panel that allows arbitrary cutting, for preparing the above-mentioned vacuum insulation panel, comprising the following steps (see figure 2 ):
[0034] A second cover plate with a honeycomb support frame of an integrated structure is prepared by adopting an integral forming process, and the honeycomb support frame has a plurality of regular hexagonal columnar cavities;
[0035] The inner surfaces of each regular hexagonal columnar cavity of the honeycomb support frame and the inner surfaces of the first and second cover plates are coated with a sealing film, and the materials with better airtightness such as aluminum may not be coated. ;
[0036] Dip-coating solder 6 on the surface of the honeycomb support frame;
[0037] The first cover plate, the honeycomb-shaped support frame and the second cover plate are vacuum-welded into an integrated plate-shaped structure by micr...
Embodiment 1
[0052] The raw materials used in the vacuum heat insulation panel of the present invention are 90% to 92% of high molecular polymers such as PP and PVC, 8% to 10% of environmentally friendly flame retardants, various additives (antioxidants, stabilizers, EBS, etc.) ) 0.2% to 0.8%.
[0053] The preparation method of the vacuum insulation board adopts the following steps:
[0054] Step 1, adding 90-92% polypropylene by mass, 8-10% high-efficiency and environmentally friendly flame retardants and additives into the extruder, mixing evenly and heating to 175-220°C to make all raw materials completely Melt and mix evenly, granulate for use;
[0055] Step 2, continue to directly inject the raw materials in the step 1, the injection molding temperature is 205-230°C, and the obtained interior is a hollow regular hexagonal prism honeycomb panel as the second cover plate with a honeycomb support frame, and the honeycomb support frame has Multiple regular hexagonal columnar cavities; ...
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Abstract
The invention discloses a vacuum thermal insulation plate allowing to be cut arbitrarily and a preparation method thereof. The vacuum thermal insulation plate comprises a first cover plate and a second plate. A supporting frame with a plurality of regular hexagon columnar cavities is arranged between the first cover plate and the second cover plate. The first cover plate, the second cover plate and the supporting frame are welded through welding materials in a microwave mode or in a gluing mode to be an integrated platy structure. In the integrated platy structure, the multiple regular hexagon columnar cavities of the supporting frame form a plurality of vacuum subsidiary cavities which are in a vacuum state and independent to one another between the first cover plate and the second cover plate. The inner surfaces of the vacuum subsidiary cavities are all coated with sealing films. The coefficient of thermal conductivity of the vacuum thermal insulation plate can reach 0.008 W.m<-1>.k<-1>, the vacuum thermal insulation plate with structure allows to be cut arbitrarily and damaged locally, the vacuum keeping time reaches 10 years or above, and the other problems of the thermal insulation plate are solved. The technology can be used for heat preservation of buildings such as ceilings, flitches and floors and also can be applied to the environments such as heat preservation vehicles and refrigerators needing to be subjected to thermal insulation.
Description
technical field [0001] The invention relates to the field of thermal insulation materials, in particular to a vacuum insulation panel that allows arbitrary cutting and a preparation method thereof. Background technique [0002] With the leading role of my country's building materials energy-saving policy, building energy-saving materials and energy-saving technologies have developed by leaps and bounds. At present, polystyrene foam material (EPS), lightweight fiber material and rock wool are usually used as thermal insulation materials. Even these materials with the best thermal insulation performance have high thermal conductivity at low density (0.027W / m·K ), the energy consumption per unit material is large, and these materials have disadvantages such as flammability and high cost. [0003] Vacuum insulation panel (VIP panel) is composed of filling material and vacuum protection surface layer, which effectively avoids heat transfer caused by air convection, and has the c...
Claims
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Application Information
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