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Conductive polybutylene foaming material and preparation method thereof

A technology of foaming material and polybutene, which is applied in the field of conductive polybutene foaming material and its preparation, can solve the problem of increasing the unit cost of polybutene foaming material, low yield of foaming products, and foaming material Surface shrinkage and other problems, to achieve the effect of small cell size, low shrinkage rate, and improved shrinkage

Active Publication Date: 2022-07-01
CHAMBROAD CHEM IND RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] At the same time, in the process of polybutene molding and foaming, due to the high temperature and pressure, most of the supercritical gas will escape from the inside of the material after forming a cell structure in the process of instantaneous pressure relief, while the air in the surrounding environment Failure to enter the inside of the cell in time, the pressure difference formed inside and outside the cell will cause the cell to collapse, the macroscopic performance is that the surface layer of the foam material shrinks severely, the yield of the foamed product is not high, and the corresponding increase in polybutene foaming unit cost of material

Method used

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  • Conductive polybutylene foaming material and preparation method thereof
  • Conductive polybutylene foaming material and preparation method thereof
  • Conductive polybutylene foaming material and preparation method thereof

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preparation example Construction

[0038] The invention provides a preparation method of a conductive polybutene foam material, comprising the following steps:

[0039] a) After mixing the raw materials, extruding and granulating, and then injection molding into a plate;

[0040] The raw material includes the following components by mass:

[0041]

[0042] in:

[0043] The organic nucleating agent is selected from one or more of cyclodextrin, calixarene, crown ether and cucurbit;

[0044] The injection pressure of the injection molding is 40~90bar, and the injection speed is 20~200cm 3 / s;

[0045] b) placing the plate in the mold cavity of the molding foaming equipment, after heating up, injecting supercritical fluid into the mold cavity and maintaining the pressure, and then releasing the pressure to obtain an initial foaming material;

[0046] c) cooling and shaping the initial foamed material to obtain a conductive polybutene foamed material.

[0047] In the preparation method provided by the presen...

Embodiment 1

[0084] S1, 80 parts of polybutene resin, 0.5 part of cyclodextrin, 1 part of glycerol monostearate, 10 parts of polyaniline, 0.1 part of antioxidant 1010, 0.5 part of silane coupling agent, 0.2 part of dodecyl Sodium benzenesulfonate and 0.1 part of oleic acid amide are uniformly mixed in a high-speed mixer, and then extruded and granulated by a twin-screw extruder. The temperature of the melting section of the extruder is 200 ° C, and then the extruded and granulated particles are injected. , the injection temperature is 200℃, the injection pressure is 55bar, and the injection speed is 85cm 3 / s. The thickness of the obtained injection-molded sheet is 4 mm, and the mass ratio of the crystal form I' in the polybutene crystals (crystal form I and crystal form I') is measured by DSC to be 12%, and the test results are shown in figure 1 , figure 1 It is the DSC bimodal structure diagram of the injection-molded sheet obtained in step S1 in Example 1.

[0085] S2. Place the 4mm ...

Embodiment 2

[0089] S1. Combine 85 parts of polybutene resin, 0.3 part of calixarene, 1.2 parts of molecularly distilled monoglyceride, 12 parts of polyacetylene, 0.1 part of antioxidant 168, 0.5 part of titanate coupling agent, 0.3 part of dodecyl Sodium sulfate and 0.15 parts of erucamide are uniformly mixed in a high-speed mixer, and then extruded and granulated by a twin-screw extruder. The temperature of the melting section of the extruder is 205°C, and then the extruded and granulated particles are injected by injection molding. The temperature is 190℃, the injection pressure is 65bar, and the injection speed is 75cm 3 / s. The thickness of the obtained injection-molded sheet is 5 mm, and the mass ratio of the crystal form I' in the polybutene crystals (crystal form I and crystal form I') is 15% as measured by DSC.

[0090] S2. Place the 5mm thick injection molding plate in the cavity of the molding foaming equipment, set the temperature to 115°C, after the temperature is stable, inj...

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Abstract

The invention provides a conductive polybutylene foaming material and a preparation method thereof. The preparation method provided by the invention comprises the following steps: uniformly mixing the polybutylene resin, the organic nucleating agent, the anti-shrinking agent, the conductive high-molecular polymer and the auxiliary agent, extruding and granulating by an extruder, then molding into a plate by an injection molding machine, and foaming the injection-molded plate by using supercritical fluid in mold pressing foaming equipment, thereby obtaining the high-temperature-resistant and high-pressure-resistant composite material. The obtained foaming material is low in shrinkage rate, small in foam hole size and good in impact property, has electrical conductivity and is a functional polymer foaming material with excellent comprehensive performance.

Description

technical field [0001] The invention relates to the field of foamed materials, in particular to a conductive polybutene foamed material and a preparation method thereof. Background technique [0002] Polybutene has excellent creep resistance, stress crack resistance and impact performance, can still maintain good mechanical properties at high temperatures, and has high filling properties. It is known as "plastic gold" and is used in many fields. greater application prospects. [0003] Foamed plastics have excellent properties such as light weight, heat insulation, sound absorption, shock absorption, buffering, energy storage, etc., and are widely used in packaging materials, transportation, architectural decoration, sports and leisure, catering logistics and other fields. At present, the more common foams are polystyrene, polyethylene, polyvinyl chloride, polyurethane, polypropylene, etc. There are relatively few studies on polybutene foam materials. In view of the excellen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/12C08J9/14C08J5/18C08L23/20C08L5/16C08L79/02C08L49/00C08L65/00C08L79/04C08L83/04C08K5/103C08K5/134C08K5/20C08K5/01C08K5/526C08K5/159C08K5/098
CPCC08J9/122C08J9/141C08J9/143C08J5/18C08J9/0061C08J9/0023C08J9/0028C08J9/0038C08J2203/06C08J2203/08C08J2203/14C08J2203/142C08J2203/16C08J2323/20C08J2405/16C08J2479/02C08J2449/00C08J2465/00C08J2479/04C08J2483/04Y02P20/54
Inventor 孙浩杰崔丽云王奇杨熙舒孟鑫吴清华贾俊雪吴文雷
Owner CHAMBROAD CHEM IND RES INST CO LTD
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