Polyethylene composition with phase transition performance and preparation method thereof
A polyethylene and composition technology, which is applied in the field of polyethylene compositions, can solve problems such as poor toughness, low material strength, and influence on material processing performance, and achieve the effects of good processing formability, simple preparation method, and improved material toughness
Active Publication Date: 2013-01-02
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
However, there are such problems: the mechanical properties of the phase change materials in this system are very low, the material strength is low, the toughness is extremely poor, and the processing performance of the material is affected when the amount of paraffin wax is added, which greatly limits the material of the system. practical application of
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Embodiment 1～8
[0027] Melt paraffin (50#, Sinopec Yanshan Petrochemical) at the melting point, stir and slowly add silica (M-5, specific surface area 200±25m 2 / g, Cabot Company), mix well, cool and pulverize. Then take polyethylene (HDPE, HD5070EA, Liaoning Panjin Ethylene Co., Ltd.), antioxidant 1076 (Beijing Chemical Industry No. 3 Plant) and antioxidant DSTP (Beijing Chemical No. 3 Plant) and paraffin / silicon dioxide mixture and fully vulcanized powder Styrene-butadiene rubber (VP108, Sinopec Beijing Research Institute of Chemical Industry, average particle size 100nm) is stirred evenly and then added to the banburying equipment for melt blending. The temperature is 180-200°C, the time is 10-20min, and the rotor speed is 60rpm; Melt blending and extruding in processing equipment and then granulation, or direct compression molding, at a temperature of 130-150°C, and preheating for 10-15 minutes, to obtain energy-storable PE composition products with phase change properties. The compositi...
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Abstract
The invention provides a polyethylene composition with phase transition performance. The polyethylene composition comprises the following blended components in parts by weight: 100 parts of polyethylene, 200-350 parts of paraffin, 1-100 parts of fully-vulcanized powder rubber and 5-50 parts of silica, wherein the melting point of the paraffin is between 15 and 75 DEG C, and the average particle size of the fully-vulcanized powder rubber is between 100 and 150 nm. The polyethylene composition is prepared by melting and blending; the preparation method is simple; the processing performance is good; and the material toughness can be greatly improved without lowering the thermal enthalpy of the material.
Description
technical field [0001] The present invention relates to a polyethylene composition. In particular, it relates to an energy-storable polyethylene composition with phase change properties. technical background [0002] Phase change materials of energy storage (phase change materials of energy storage), also known as latent heat storage materials, is a hot spot in the development and research of energy utilization and material science in recent years. It mainly uses certain substances to absorb or release a large amount of heat through phase transition at a specific temperature, so as to achieve energy storage and release. Utilize this feature to manufacture various facilities that improve energy efficiency in the fields of solar energy utilization, "peak shifting and valley filling" of electricity, waste heat and waste heat recovery, and energy saving of industrial and civil buildings and air conditioners. When the temperature is approximately constant, it can be used to adj...
Claims
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IPC IPC(8): C08L23/06C08L9/06C08L15/00C08K5/01C08K3/04C08K3/36C09K5/06
Inventor 张薇张伟张师军邵静波尹华张丽英吕明福王小兰刘涛邹浩李魁陈力张浩李杰吕芸徐萌
Owner CHINA PETROLEUM & CHEM CORP