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Foaming silicone master batch as well as preparation method and application thereof

A silicone masterbatch and foaming agent technology, which is applied in the field of foamed silicone masterbatch and its preparation, can solve the problems of uneven dispersion, improve wear resistance, improve melt fluidity, and improve poor blending effect Effect

Active Publication Date: 2014-01-22
HUBEI HUIFU NANOMATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Silicone powder is used as an additive, and the dosage is generally less than 5 parts. In order to solve the problem of uneven dispersion when directly adding silicone powder and blending with the pellet matrix, prefabricated masterbatch is a commonly used improvement method

Method used

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  • Foaming silicone master batch as well as preparation method and application thereof
  • Foaming silicone master batch as well as preparation method and application thereof
  • Foaming silicone master batch as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 100 parts of high-density polyethylene resin (high-density polyethylene resin grade is 5000S, density 0.949-0.953, melt flow rate is 0.8-1.2), 5 parts of foaming agent (azodicarbonamide), antioxidant ( Antioxidant 1010: Antioxidant 168 = 1:1) 1 part, silicone powder 100 parts, after fully mixing, extrude the melt into pellets through a twin-screw extruder, the extrusion temperature is 170-210 °C, extrude The output speed was 20rpm, and the head pressure was 4MPa to obtain foamed silicone masterbatch 1.

[0029] The density of foamed silicone masterbatch 1 is 0.71 g / cm 3 , the microscopic cross-sectional microscope photo of the foamed silicone masterbatch 1 is as follows figure 2 As shown, the cell size is large and the cells are dense.

Embodiment 2

[0031] 100 parts of high-density polyethylene resin (high-density polyethylene resin grade is 5000S, density 0.949-0.953, melt flow rate 0.8-1.2), foaming agent (2,2′-azobisisobutylcyanide) 7 1 part, antioxidant (antioxidant 1010:antioxidant 168 = 1:1), 1 part of silicone powder, 130 parts of silicone powder, after fully mixing, the melt is extruded and granulated by a twin-screw extruder, and the extrusion temperature is 170-210°C, the extrusion speed is 20rpm, and the head pressure is 4.5MPa to obtain foamed silicone masterbatch 2.

[0032] The density of foamed silicone masterbatch 2 is 0.69g / cm 3 , the microscopic cross-sectional microscope photo of the foamed silicone masterbatch 2 is as follows image 3 As shown, the cell size is large and the cells are dense.

Embodiment 3

[0034] 100 parts of polypropylene resin, polypropylene resin is high melt strength polypropylene (HMSPP), density is 0.905 g / cm, MFR is 2.4 g / 10 min (230°C, 2.16 kg), foaming agent (4,4′ -Oxydiphenylsulfonylhydrazide) 7 parts, antioxidant (antioxidant 1010:antioxidant 168 = 1:1) 1 part, silicone powder 100 parts, after fully mixing, melt the melt through a twin-screw extruder Extrusion granulation, the extrusion temperature is 180-220° C., the extrusion speed is 20 rpm, and the head pressure is 3.5 MPa to obtain foamed silicone masterbatch 3 .

[0035] The density of foamed silicone masterbatch 3 is 0.68 g / cm 3 .

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Abstract

The invention relates to the field of high-molecular materials. The usage amount of silicone powder as an additive is generally lower than 5 parts by weight; in order to solve the problem that the silicone powder is unequally dispersed after being directly added and blended with a granular material base body, the invention provides a foaming silicone master batch. The foaming silicone master batch is prepared by blending the following components in parts by weight: 100 parts of thermoplastic high-molecular resin, 70-150 parts of the silicone powder, 0.5-1 part of foaming agents and 2-8 parts of an antioxidant. The foaming silicone master batch has the advantages of light weight and low density, and is easy to blend and disperse together with the granular thermoplastic high-molecular resin.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a foamed silicone masterbatch and a preparation method thereof. Background technique [0002] Silicone polymer is a kind of special polymer material with semi-organic and semi-inorganic structure, which has unique and excellent properties. Due to the characteristics of the silicone material itself, the silicone component in the additive is both compatible and different from the carbon-carbon chain polymer of the plastic substrate, so they can be mixed with each other to play a unique role, and will not be affected by the base polymer. Complete "submergence and assimilation" failure, so the application of a small amount of silicone additives can achieve a significant improvement effect, the use of silicone materials as plastic processing aids, often receive a small investment in exchange for the ideal effect of major benefits. The development of new silicone materials used as pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L25/06C08L51/04C08L77/00C08L67/00C08L23/16C08L51/06C08L83/04C08J9/10C08J9/08C08J9/04C08J3/22
CPCC08J3/226C08J9/0061C08J2323/06C08J2323/12C08J2351/04C08J2351/06C08J2483/04C08L23/06C08L23/12C08L23/16C08L25/06C08L51/00C08L51/04C08L51/06C08L67/00C08L77/00C08L83/04C08L2205/03C08L2205/035C08L2207/062C08K5/1345C08K5/526
Inventor 赵丽邬继荣裴勇兵汤龙程蒋剑雄来国桥
Owner HUBEI HUIFU NANOMATERIAL CO LTD
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