Foam composite material and forming method thereof

A technology for composite materials and foamed materials, applied in the field of foamed materials, can solve the problems of reduced material fluidity, reduced melt strength, insufficient cross-linking degree of materials, etc., and achieves the effects of excellent solvent resistance and good thermal insulation.

Active Publication Date: 2018-03-30
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the addition of inorganic fillers can increase the density of the polymer foam material, but at the same time it will also reduce the fluidity of the material, resulting in a decrease in the melt strength of the mat...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The foaming formula is:

[0033] PP: 18.3%, LDPE: 45%, mica: 5%, hollow glass beads: 5%, EPDM: 5%, foam glass powder: 7%, DCP: 3%, divinylbenzene: 2%, AC hair Foaming agent: 3%, zinc oxide 5%, stearic acid 1%, antioxidant 1010 0.5%, silane coupling agent: 0.1%, titanate coupling agent: 0.1%.

[0034] The grade or model of the material is:

[0035] PP (brand T30S), Dalian Petrochemical. LDPE (grade 2102TN26), Qilu Petrochemical. EPDM grade 3720P, American Dow Company. Dicumyl peroxide (DCP), technical grade. AC foaming agent, model Dn8, Shanghai Wenhua Chemical Pigment Co., Ltd. Zinc oxide (ZnO), analytically pure, Sinopharm Chemical Reagent Co., Ltd. Antioxidant 1010, industrial grade. Stearic acid, analytically pure, Sinopharm Chemical Reagent Co., Ltd. Mica is 1200 mesh muscovite. Hollow glass microspheres have a particle size of 50 microns and a density of 0.4g / cm 3 . Foam glass powder, Hebei Zhongtai Tiancheng Energy Saving Technology Co., Ltd. Divinylbe...

Embodiment 2

[0049] The foam formula is:

[0050] PP: 11.8%, LDPE: 56.4%, mica: 3%, hollow glass microspheres: 3%, EPDM: 5%, foam glass powder: 6%, DCP: 2%, divinylbenzene: 1%, AC hair Foam agent: 5%, zinc oxide 4%, stearic acid 2%, antioxidant 1010 0.6%, silane coupling agent: 0.1%, titanate coupling agent: 0.1%.

[0051] Among them, PP (brand T30S), Dalian Petrochemical, hollow glass microspheres: particle size 60μm, density 0.5g / cm 3 , other with embodiment 1.

[0052] The preparation of AC foam masterbatch, preparation of PP / mica filler masterbatch, preparation of LDPE / hollow glass microsphere filler masterbatch, and preparation of blended materials are the same as in Example 1.

[0053] Preparation of foam material: blending material, foam glass powder, foam masterbatch (LDPE / AC foaming agent), cross-linking agent dicumyl peroxide (DCP), auxiliary cross-linking agent divinylbenzene, oxidation Zinc, stearic acid, and antioxidant 1010 are mixed in a high-mixer according to the ratio,...

Embodiment 3

[0059] The foam formula is:

[0060] PP: 20%, LDPE: 36.4%, mica: 7%, hollow glass beads: 7%, EPDM: 8%, foam glass powder: 8%, DCP: 3%, divinylbenzene: 2%, AC hair Foaming agent: 3%, zinc oxide 4%, stearic acid 1%, antioxidant 1010 0.4%, silane coupling agent: 0.1%, titanate coupling agent: 0.1%.

[0061] Among them, PP (brand T30S), Dalian Petrochemical. Hollow glass microspheres have a particle size of 60 microns and a density of 0.5g / cm 3 , other with embodiment 1.

[0062] The preparation of AC foam masterbatch, preparation of PP / mica filler masterbatch, preparation of LDPE / hollow glass microsphere filler masterbatch, and preparation of blended materials are the same as in Example 1.

[0063] Preparation of foam material: blending material, foam glass powder, foam masterbatch (LDPE / AC foaming agent), cross-linking agent dicumyl peroxide (DCP), auxiliary cross-linking agent divinylbenzene, oxidation Zinc, stearic acid, and antioxidant 1010 are mixed in an internal mixer ...

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Abstract

The invention belongs to the field of foam material and specifically relates to a foam composite material and a preparation method thereof. According to the preparation method, foaming master batch isprepared at firstly, scattering of a powdery foaming agent in alloying can be avoided, and a mixing effect is enhanced; mica and hollow glass beads are added to achieve a lubricating effect on flowing of a plastic matrix, so that physical foam holes of foam glass powder in the matrix and foam holes generated by decomposition of the foaming agent are mutually matched; the foam composite material with good foaming performance can be prepared under a synergistic effect of other ingredients.

Description

technical field [0001] The invention belongs to the field of foam materials, in particular to a foam composite material and a molding method thereof. Background technique [0002] Low-density polyethylene (LDPE) is a branched polymer with high toughness, excellent low temperature resistance, high melt strength and good foaming performance. Polypropylene (PP) has better heat resistance than LDPE, but PP is generally a linear molecular chain, with low melt strength and poor foaming performance. Blending the two can improve the heat resistance and foaming performance of the material. However, due to the poor compatibility between PP and LDPE, and the blending and foaming of PP and PE, soft foam is generally formed, which has poor mechanical properties and cannot bear loads. In order to improve the mechanical properties of foamed plastics and obtain foamed plastics with light weight and good mechanical properties, it is necessary to add inorganic fillers for reinforcement. Ge...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L23/16C08K13/06C08K9/04C08K9/06C08K7/28C08K3/34C08J9/10C08J3/22B29B9/06
CPCB29B9/06C08J3/226C08J9/0014C08J9/0023C08J9/0061C08J9/0066C08J9/009C08J9/0095C08J9/103C08J2203/04C08J2323/06C08J2423/12C08J2423/16C08K3/34C08K7/28C08K9/04C08K9/06C08K13/06C08K2201/014
Inventor 廖华勇刘春林陶国良夏艳平马丽宁
Owner CHANGZHOU UNIV
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