Polybutylene foam material and preparing method thereof

A foaming material, polybutene technology, applied in the field of modified plastics, can solve the problems of low foaming ratio, easy cell rupture, low melt strength, etc., and achieve good mechanical properties, uniform cell distribution, widening Effects in the field of application

Active Publication Date: 2016-06-15
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 to break, collapse and merge, resulting in poor quality of foamed materials. Uneven pore size distribution, low foaming ratio, etc.

Method used

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  • Polybutylene foam material and preparing method thereof
  • Polybutylene foam material and preparing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] The present embodiment provides that the preparation method of polybutene foaming material is the extrusion foaming method, and proceeds according to the following steps:

[0071] Step 1, place the polybutene and talcum powder with 93% identical content used in the experiment in a vacuum drying oven at 50° C. for 24 hours;

[0072] Step 2, premixing the raw materials according to the formula ratio, so that the raw materials are preliminarily mixed evenly to obtain a premixed material, wherein:

[0073] Described formula ratio is by weight percentage, is made up of following raw materials: polybutene is 90.45%, foaming agent AC is 1.4%, foaming aid ZnO is 0.4%, talcum powder (325 orders) is 6%, anti- Oxygen agent 1010 is 0.1%, dicumyl peroxide DCP is 0.15%, Hst is 0.5%, glyceryl monostearate is 1%, and the total amount of raw materials is 100%.

[0074] Step 3, adding the premix obtained in step 2 into a single-screw extruder for mixing and extrusion foaming, wherein: ...

Embodiment 2

[0080] The present embodiment provides that the preparation method of polybutene foaming material is the extrusion foaming method, and proceeds according to the following steps:

[0081] Step 1, place the polybutene and talcum powder with 93% identical content used in the experiment in a vacuum drying oven at 50° C. for 24 hours;

[0082] Step 2, premixing the raw materials according to the formula ratio, so that the raw materials are preliminarily mixed evenly to obtain a premixed material, wherein:

[0083] Described formula ratio is by weight percent, is made up of following raw material: polybutene is 87.25%, foaming agent AC is 5%, foaming aid ZnO is 1%, talcum powder (325 order) is 6%, anti- Oxygen agent 1010 is 0.1%, dicumyl peroxide DCP is 0.15%, Hst is 0.5%, glyceryl monostearate is 1%, and the total amount of raw materials is 100%.

[0084] Step 3, adding the premix obtained in step 2 into a single-screw extruder for mixing and extrusion foaming, wherein:

[0085] ...

Embodiment 3

[0090] The present embodiment provides that the preparation method of polybutene foaming material is the injection foaming method, and proceeds according to the following steps:

[0091] Step 1, place polybutene and talcum powder with an isotropic content of 88% used in the experiment in a vacuum drying oven at 50° C. for 24 hours;

[0092] Step 2, premixing the raw materials according to the formula ratio, so that the raw materials are preliminarily mixed evenly to obtain a premixed material, wherein:

[0093] Described formula ratio is by weight percentage, is made up of following raw materials: polybutene is 88.45%, foaming agent AC is 2.5%, foaming aid ZnO is 0.5%, talcum powder (325 order) 7%, antioxidant Agent 1010 is 0.1%, dicumyl peroxide DCP is 0.15%, Hst is 0.3%, glyceryl monostearate is 1%, and the total amount of raw materials is 100%.

[0094] Step 3: Add the premixed material obtained in Step 2 into the barrel, knead with the screw and inject it into the mold ca...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/20C08K13/02C08K3/34C08K3/26C08K5/134C08K5/14C08K5/103C08J9/10
CPCC08J9/103C08J2203/04C08J2205/044C08J2323/20C08K3/26C08K3/34C08K5/103C08K5/1345C08K5/14C08K13/02C08K2003/265C08L2203/14C08L23/20
Inventor 史翎索倩倩乔辉
Owner BEIJING UNIV OF CHEM TECH
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