Molecular weight grading device for polyolefin

Abstract

The invention provides a molecular weight grading device for polyolefin, and relates to a grading device. The invention solves the problems of preparation of polyolefin with different molecular weights mainly through a polymerization method in the prior art, and fluctuation of temperature in the process of conventional polyolefin grading. The molecular weight grading device for polyolefin comprises: the top part of a heating box is provided with a three-mouth flask fixing opening; the side surface of the heating box is provided with a hose connecting opening and a three-mouth flask valve knob connecting opening; the bottom part of the three-mouth flask is provided with and communicates with a bottom tube; the bottom tube is provided with a three-mouth flask valve knob which penetrates through the three-mouth flask valve knob connecting opening of the heating box along a horizontal direction and is fixed; a vacuum filtering bottle is provided with and communicates with a hose which penetrates through the hose connecting opening of the heating box along a horizontal direction and is fixed; the upper mouth of the three-mouth flask upward penetrates through the three-mouth flask fixing opening located at the top part of the heating box and is fixed; the lower part of the bottom tube located at the bottom part of the three-mouth flask is provided with a funnel; and the bottom part of the funnel is provided with the vacuum filtering bottle. The invention relates to the molecular weight grading device for the polyolefin.

Description

technical field

[0001] The present invention relates to classifying devices. Background technique

[0002] Polyolefin is one of the most widely used polymer materials. Polyolefin has the characteristics of non-toxic, cheap, light weight, excellent moisture resistance, good chemical stability and easy molding processing. It is widely used in food, automobile, chemical industry and other fields. More and more high-density polyolefin plastics are used in daily life, which brings convenience to human beings. With the development of society, people's requirements for hygiene and safety are also getting higher and higher. Polyolefins are mainly used in packaging materials, drinking water packaging bottles, bottle caps, etc. in the food field. However, with the increasingly fierce market competition, downstream manufacturers have higher and higher requirements for the odor performance of polyolefin resins. After testing, volatile organic compounds are mainly aldehydes, ketones, e...

Examples

specific Embodiment approach 1

[0018] Specific implementation mode one: combine figure 1 and 2 , this embodiment is a polyolefin molecular weight classification device including a heating box 1, a three-necked bottle 2, a funnel 3, a suction filter bottle 4, a three-necked bottle valve button 5 and a hose 6;

[0019] The top of the heating box 1 is provided with a three-necked bottle fixing port 1-1, and the side of the heating box 1 is provided with a hose connection port 1-2 and a three-necked bottle valve button connection port 1-3;

[0020] The bottom of the three-necked bottle 2 is provided with a bottom pipe 2-1 and communicated with each other; the bottom pipe 2-1 is provided with a three-necked bottle valve button 5, and the three-necked bottle valve button 5 passes through the three-necked bottle valve button of the heating box 1 in the horizontal direction Connect ports 1-3 and fix them;

[0021] The suction filter bottle 4 is provided with a suction filter port 4-1, and the suction filter port ...

specific Embodiment approach 2

[0034] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that: the door of the heating box 1 is provided with a window. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 or Embodiment 2 is that the temperature control range of the heating box 1 is 30°C-200°C. Others are the same as in the first or second embodiment.

technical field

[0001] The present invention relates to classifying devices. Background technique

[0002] Polyolefin is one of the most widely used polymer materials. Polyolefin has the characteristics of non-toxic, cheap, light weight, excellent moisture resistance, good chemical stability and easy molding processing. It is widely used in food, automobile, chemical industry and other fields. More and more high-density polyolefin plastics are used in daily life, which brings convenience to human beings. With the development of society, people's requirements for hygiene and safety are also getting higher and higher. Polyolefins are mainly used in packaging materials, drinking water packaging bottles, bottle caps, etc. in the food field. However, with the increasingly fierce market competition, downstream manufacturers have higher and higher requirements for the odor performance of polyolefin resins. After testing, volatile organic compounds are mainly aldehydes, ketones, e...

Examples

specific Embodiment approach 1

[0018] Specific implementation mode one: combine figure 1 and 2 , this embodiment is a polyolefin molecular weight classification device including a heating box 1, a three-necked bottle 2, a funnel 3, a suction filter bottle 4, a three-necked bottle valve button 5 and a hose 6;

[0019] The top of the heating box 1 is provided with a three-necked bottle fixing port 1-1, and the side of the heating box 1 is provided with a hose connection port 1-2 and a three-necked bottle valve button connection port 1-3;

[0020] The bottom of the three-necked bottle 2 is provided with a bottom pipe 2-1 and communicated with each other; the bottom pipe 2-1 is provided with a three-necked bottle valve button 5, and the three-necked bottle valve button 5 passes through the three-necked bottle valve button of the heating box 1 in the horizontal direction Connect ports 1-3 and fix them;

[0021] The suction filter bottle 4 is provided with a suction filter port 4-1, and the suction filter port ...

specific Embodiment approach 2

[0034] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that: the door of the heating box 1 is provided with a window. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 or Embodiment 2 is that the temperature control range of the heating box 1 is 30°C-200°C. Others are the same as in the first or second embodiment.

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