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Process for assisting in foaming of cross-linked polyolefin as well as ultrasonic treatment device for process

A technology of cross-linking polyolefin and processing device, which is applied in the field of polymer foaming technology, can solve the problems of excessive pore size, different pore size, rupture, etc., and achieve the effect of improving quality, excellent performance and fine bubbles

Active Publication Date: 2012-11-07
SHANDONG TAISHAN JINRUN PLASTIC PRODS +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although after kneading, plasticizing and other processes, the dispersion in polyolefin is still very uneven due to the agglomeration effect between solid particles, especially the foaming agent particles. Uneven dispersion and aggregation together will lead to uneven pore size. 1. Problems such as excessive pores and cracks seriously affect the quality of polyolefin foam materials

Method used

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  • Process for assisting in foaming of cross-linked polyolefin as well as ultrasonic treatment device for process
  • Process for assisting in foaming of cross-linked polyolefin as well as ultrasonic treatment device for process
  • Process for assisting in foaming of cross-linked polyolefin as well as ultrasonic treatment device for process

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Accompanying drawing is a kind of specific embodiment of the present invention. This embodiment is a process for assisting cross-linked polyolefin foaming and its ultrasonic treatment device. The polyolefin foam material is subjected to ultrasonic treatment, and multiple sets of ultrasonic treatment devices 7 can be installed in the foaming furnace according to the ultrasonic treatment effect of the final product. Described ultrasonic processing device 7 comprises base 14, body 9, ultrasonic generator 13, ultrasonic transducer 11 and control and power supply part; Described base 14 two ends have two pulleys 15 respectively, on both sides of foaming furnace A guide rail 6 is respectively arranged on the inner wall, and the pulleys 15 at the two ends of the base 14 are installed on the guide rail 6 and can move back and forth along the guide rail ...

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Abstract

The invention discloses a process for assisting in foaming of cross-linked polyolefin as well as an ultrasonic treatment device for the process. The ultrasonic treatment device is configured in a common foaming furnace to ultrasonically treat a polyolefin foaming material which is just foamed but still in a molten state. Lots of small holes are formed in a polyolefin melt by high energy and strong cavitation effect of ultrasonic vibration, so that the free energy barrier for bubble nucleation is reduced, bubble formation is facilitated, the total quantity of bubbles is increased and the average diameter of bubbles is reduced. In addition, large bubbles can be broken into multiple small bubbles by strong ultrasonic vibration, and the small bubbles are re-surrounded by the polyolefin melt, so that the bubbles in the melt are more uniform, and the polyolefin material with densely and uniformly distributed air holes can be obtained.

Description

technical field [0001] The invention belongs to the field of polymer foaming technology, and in particular relates to a technology for assisting cross-linked polyolefin foaming and an ultrasonic treatment device thereof. Background technique [0002] Polyolefin plastics have a wide range of applications, have good physical, chemical and mechanical properties, good toughness, flexibility and cushioning properties, and have properties such as electrical insulation and heat insulation. They are widely used in packaging, chemical industry, construction and other fields. Polyolefin foams are widely used and one of the first foams to be successfully produced. As early as 1941, DuPont of the United States successfully prepared LDPE foam by using the nitrogen method. After decades of development, polyolefin foams have matured and diversified in terms of varieties and applications. With the continuous deepening of theoretical research and the advancement of foaming technology, foam...

Claims

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Application Information

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IPC IPC(8): B29C44/56B29K23/00
Inventor 杨小兵龙国荣卞志勇赵付彬
Owner SHANDONG TAISHAN JINRUN PLASTIC PRODS
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