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Master batch material, foaming master batch preparation method and foaming material preparation method

A foaming masterbatch, masterbatch technology, applied in the field of foaming masterbatch preparation, foaming material preparation, masterbatch materials, can solve the problems of low foaming uniformity, uneven pore size, low physical and mechanical properties, etc., to achieve The product has excellent mechanical properties, low molding shrinkage, and good weight loss effect

Pending Publication Date: 2021-07-27
CRERAX SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional physical foaming preparation method has problems such as complex foaming material equipment, large investment, high manufacturing cost, and complicated operation process. Gas marks, subsidence, bulges, low physical and mechanical properties, large dust, residual chemical substances, etc.
Not only that, but the existing methods all have problems such as foaming agent, foaming gas are flammable and harmful, the temperature range of foaming process is narrow, and the uniformity of foaming is low.
[0003] In the patent CN105131501A, the polymer carrier, foaming agent, and lubricant are mixed and granulated, and then granulated in a twin-rotor continuous mixer and a single-screw extruder unit to obtain foam masterbatch, but the foam masterbatch obtained Foamed products have uneven cells and low strength
Patent CN106883490A uses the endothermic non-polar foaming agent sodium bicarbonate and citric acid and the exothermic organic foaming agent azodicarbonamide to compound according to an appropriate ratio, so that the heat absorbed and released during the decomposition process of the foaming agent can be as much as possible. Possibly balanced, resulting in foamed materials with stable cells, but narrow range of application, not suitable for polyester materials

Method used

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  • Master batch material, foaming master batch preparation method and foaming material preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The masterbatch material includes the following components: 20 parts by weight of EVA, 20 parts of LDPE, and 60 parts of high-temperature expandable microspheres. The expandable microspheres in this embodiment adopt a maximum foaming temperature of 190-210° C., an initiation temperature of 130-160° C., and a particle size of 26-32 μm.

[0029] The preparation method of foam master batch comprises the steps:

[0030] Mix EVA, LDPE, and high-temperature microspheres in an internal mixer at 90°C for 15 minutes according to the above weight parts;

[0031] The mixed material is fed into the single-screw extruder from the feeding port, the extrusion temperature of the single-screw extruder is 100°C, and the rotation speed is 50-150r / min, and extruded and pelletized to obtain foam masterbatch.

[0032]A method for preparing a foam material, comprising the steps of:

[0033] Add foaming masterbatches with a mass fraction of 0% and 4% of the thermoplastic resin to the PVC inj...

Embodiment 2

[0036] The masterbatch material includes the following components: 40 parts by weight of EVA, and 60 parts of high-temperature expandable microspheres. The expandable microspheres in this embodiment adopt a maximum foaming temperature of 190-210° C., an initiation temperature of 130-160° C., and a particle size of 26-32 μm.

[0037] The preparation method of foam master batch comprises the steps:

[0038] Mix EVA and high-temperature expandable microspheres in an internal mixer at 90°C for 15 minutes according to the above weight parts;

[0039] The mixed material is fed into the single-screw extruder from the feeding port, the extrusion temperature of the single-screw extruder is 100°C, the rotation speed is 50-150r / min, and the foaming masterbatch is obtained by extruding and cutting.

[0040] A method for preparing a foam material, comprising the steps of:

[0041] Add foaming masterbatches with a mass fraction of 0% and 4% of the thermoplastic resin to the TPR injection ...

Embodiment 3

[0044] The masterbatch material includes the following components: 40 parts by weight of LDPE, and 60 parts of ultra-high temperature expandable microspheres. The expandable microspheres in this embodiment adopt a maximum foaming temperature of 190-210° C., an initiation temperature of 130-160° C., and a particle size of 26-32 μm.

[0045] The preparation method of foam master batch comprises the steps:

[0046] Mix LDPE and ultra-high temperature expandable microspheres according to the above weight parts in an internal mixer at 90°C for 15 minutes;

[0047] The mixed material is fed into the single-screw extruder from the feeding port, the extrusion temperature of the single-screw extruder is 150°C, the rotation speed is 50-150r / min, and the foaming masterbatch is obtained by extruding and cutting.

[0048] A method for preparing a foam material, comprising the steps of:

[0049] Add foaming masterbatches with a mass fraction of 0% and 4% of the thermoplastic resin in the ...

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PUM

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Abstract

The invention provides a master batch material, a foaming master batch preparation method and a foaming material preparation method, and belongs to the technical field of high polymer material processing. The master batch material is specifically prepared from, by weight, 30-60 parts of a carrier resin, 30-80 parts of a foaming agent and 0-5 parts of an auxiliary agent, wherein the foaming agent is a medium-high temperature or ultra-high temperature expandable microsphere, the expandable microsphere is characterized in that a volatile expanding agent serving as a core agent is wrapped in a shell formed by a polymer, the shell is formed by polymerizing a monomer mixture of polymerizable monomers, and the polymerizable monomers are at least one of acrylonitrile, acrylate monomers, acrylamide monomers and acrylic acid monomers. According to the treatment scheme, the prepared foaming master batch is uniform in foaming, good in weight reduction effect and wide in application range.

Description

technical field [0001] The invention relates to the technical field of polymer material processing, in particular to a masterbatch material, a method for preparing a foamed masterbatch and a method for preparing a foamed material. Background technique [0002] Compared with micro-foaming materials, foamed plastics can reduce the density by 5%-95%, and have the advantages of good sound insulation and heat insulation performance, shock load absorption, good cushioning performance, and low price. The conventional physical foaming preparation method has problems such as complex foaming material equipment, large investment, high manufacturing cost, and complicated operation process. Air marks, subsidence, bulges, low physical and mechanical properties, large dust, residual chemical substances and other problems caused by holes, holes, etc. Not only that, but the existing methods all have problems such as foaming agent and foaming gas are flammable and harmful, the temperature ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08J3/22C08J9/32C08L27/06C08L21/00C08L67/02
CPCC08J3/226C08J9/32C08J2203/22C08J2423/08C08J2423/06C08J2327/06C08J2321/00C08J2367/02
Inventor 何志兰刘雪云杨其健李娟
Owner CRERAX SCI & TECH CO LTD