Mineral slag micropowder modified polypropylene composite and preparation method thereof

A technology of slag micropowder and composite materials, which is applied in the field of composite materials, and can solve the effects of mechanical properties, optical properties, thermal properties and flame retardancy of polymer processed products, and the compatibility and dispersion of activated calcium carbonate with polyethylene and polypropylene Failure to meet the requirements and other problems, to achieve the effect of prolonging the ignition time

Inactive Publication Date: 2019-02-22
SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, most of the fillers in the processing of general-purpose plastic polyethylene and polypropylene use activated calcium carbonate, but in some areas with relatively high requirements, the compatibility and dispersibility of activated calcium carbonate with polyethylene and polypropylene cannot reach Requirements, and its addition will have varying degrees of impact on the mechanical properties, optical properties, thermal properties and flame retardancy of polymer processed products

Method used

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  • Mineral slag micropowder modified polypropylene composite and preparation method thereof
  • Mineral slag micropowder modified polypropylene composite and preparation method thereof
  • Mineral slag micropowder modified polypropylene composite and preparation method thereof

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Effect test

Embodiment 1

[0038] The preparation method of the slag micropowder modified polypropylene composite material is as follows: Weigh the raw materials according to the following ratio, silane coupling agent 1%, slag micropowder 10%, polypropylene 89%; wherein, the slag micropowder has a bulk density of 950kg / m 3 , with an average particle size of 1 μm, melted and blended at a speed of 5 r / min at a high temperature of 210 ° C for 5 min to obtain.

Embodiment 2

[0040] The preparation method of the slag micropowder modified polypropylene composite material is as follows: Weigh the raw materials according to the following ratio, 10% of silane coupling agent, 30% of slag micropowder, and 60% of polypropylene; wherein, the bulk density of slag micropowder is 970kg / m 3 , with an average particle size of 10 μm, melted and blended at a speed of 10 r / min at a high temperature of 230 ° C for 15 min to obtain.

Embodiment 3-7

[0057] Prepare slag micropowder modified plastic composite material, wherein, the content of slag micropowder in embodiment 3-7 is successively 2%, 5%, 10%, 20% and 30%, and the mass percent of silane coupling agent, polypropylene is 100%; Then the composite material prepared by embodiment 3-7 and pure polypropylene are carried out tensile property and thermal property test, and the results are as table 4 and Figure 4 shown.

[0058] Table 4: Tensile test data

[0059]

[0060]It can be seen from Table 4 that the addition of slag fine powder reduces the elongation at break and the maximum tensile force of the plastic, which is mainly due to the fact that the addition of slag destroys the continuity of the polymer matrix, and the addition of slag fine powder has an effect on polypropylene The elongation at break and the maximum tensile force are well maintained, so that the tensile yield stress and fracture stress of polypropylene both increase first and then decrease. Whe...

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Abstract

The invention discloses a mineral slag micropowder modified polypropylene composite and a preparation method thereof. The mineral slag micropowder modified polypropylene composite comprises the raw materials in percentage by mass: 1-10% of silane coupling agent, 1-30% of mineral slag micropowder and 60-98% of polypropylene, and the sum of the percentages of all the components is 100%. Known by combining with the tensile property, shock resistance, thermal property and optical property of a processed product, the comprehensive properties of the mineral slag micropowder serving as polypropylenefiller are obviously superior to those of activated calcium carbonate (1000 meshes) filler, and the prepared composite can be used in the fields such as polymers for the household appliance industry,polymers for automobile non-structural members and plastic pipelines for the home decoration industry.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a slag micropowder modified polypropylene composite material and a preparation method thereof. Background technique [0002] At present, most of the fillers in the processing of general-purpose plastic polyethylene and polypropylene use activated calcium carbonate, but in some areas with relatively high requirements, the compatibility and dispersibility of activated calcium carbonate with polyethylene and polypropylene cannot reach Requirements, and its addition has varying degrees of impact on the mechanical properties, optical properties, thermal properties and flame retardancy of polymer processed products. Slag micropowder has the characteristics of sufficient sources and low cost. If it is applied to polymer fillers in the home appliance industry, polymer reinforced fillers for non-structural parts in the automotive industry, and polymer reinforced fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K3/00C08K5/5425C08K5/544
CPCC08K3/00C08K5/5425C08K5/544C08K2201/003C08L2201/02C08L2203/18C08L23/12
Inventor 王林刘纪昌严志平沈本贤孙辉
Owner SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS
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