Polybutylene foam material and preparing method thereof

Abstract

The invention provides a polybutylene foam material and a preparing method thereof. According to the foam material, by means of a chemical foaming method, an extruder is used for carrying out extruding foaming, an injection molding machine is used for carrying out injection molding foaming, and a double-roller mixing mill is used for carrying out mould pressing foaming after blending. The situation that melt indexes and melt strength corresponding to polybutylene of different and identical contents are different is taken into consideration, and the influence on the foaming behavior from polybutylene of the different and identical contents is explored. The influence on the cellular structure and mechanical properties of the foam material from different addition quantities of foaming agents is studied. The influence on the polybutylene cross-linking degree and the material melt strength from different addition quantities of cross-linking agents is studied, so that the foam material with cells distributed uniformly and good mechanical properties is obtained. In addition, different kinds of nucleating agents and the addition quantity of the different nucleating agents are considered according to the classic nucleating theory, and a balance point is found between the cellular structure and the mechanical properties of the foam material. The foam material can be applied to automotive upholstery parts, food packages, biological medicine materials and pipe heat insulation and heat preservation cannulas.

Description

technical field

[0001] The invention belongs to the field of modified plastics and relates to a foaming material, in particular to a polybutene foaming material and a preparation method thereof. Background technique

[0002] Polymer foam material has become an important industrial material in the 21st century because of its low density, high specific strength, sound insulation, heat insulation and other barrier properties, and excellent energy absorption characteristics. Among them, polyolefin foam materials have good development prospects. Polyolefin foam materials are widely used and widely studied are polyethylene and polypropylene, among which polyethylene foam is widely used, but its mechanical properties and heat resistance are not ideal; the advantages of polypropylene foam materials are Good mechanical properties, excellent energy absorption and low price, but its biggest disadvantage is its low melt strength, which makes the cells formed in the foaming process easy...

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