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High-rate crosslinking foaming polypropylene sheet and preparation method thereof

A polypropylene and high-magnification technology, which is applied in the field of high-magnification cross-linked foamed polypropylene sheet and its preparation, can solve the problems that the mechanical properties, tensile strength and elongation at break of the foaming ratio are difficult to satisfy, the process is complicated, and the control is difficult. And other issues

Inactive Publication Date: 2010-08-18
钟果平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is more complicated in technology, and it is difficult to control it.
[0006] Recently, some enterprises have begun to adopt the irradiation crosslinking process to prepare expanded polypropylene, but both the expansion ratio and the mechanical properties of the material (such as tensile strength, elongation at break, etc.) are difficult to meet the current market needs. big room for improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] First, get 1000 grams of commercially available F-type polypropylene (Qilu Petrochemical PP powder), 100 grams of trimethylolpropane triacrylate (Oriental Chemical Plant), 5 grams of zinc oxide (Shijiazhuang Jixin Zinc Industry Co., Ltd.), Anti-aging agent (Tianjin Chemical Plant, model: 1010) 2 grams are mixed evenly, then utilize twin-screw extruder (WP company manufactures, model ZSK-25WLE) to prepare polypropylene blended material, the temperature of extruding each section is respectively 160 ℃, 180℃, 220℃, 220℃, 220℃, 220℃.

[0041] Subsequently, after 200 grams of foaming agent masterbatch (made by Beijing University of Chemical Technology, model: AC-1) made by foaming agent, evenly mix and go up tableting behind twin-screw extruder and three-roller calender.

[0042] Next, take a sheet with a length of 100mm×width 60mm×a thickness of 2mm and carry out irradiation crosslinking on an electron accelerator (China Institute of Atomic Energy). Foaming was carried out ...

Embodiment 2

[0044] Except that the radiation dose in Example 1 was changed to 80KGy, and the foaming time was changed to 8 minutes, the polypropylene foam sheet was prepared in the same manner as in Example 1, and the foaming ratio obtained was 18 times, and the thickness was 3.4 mm thick. polypropylene foam sheet.

Embodiment 3

[0046] Except that the radiation dose in Example 1 is changed to 100KGy, and the foaming time is changed to 10 minutes, the polypropylene foam sheet is prepared in the same manner as in Example 1, and the foaming ratio obtained is 20 times, and the thickness is 4.2 mm thick. polypropylene foam sheet.

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PUM

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Abstract

The invention relates to a novel high-rate crosslinking foaming polypropylene sheet and a preparation method thereof. The high-rate crosslinking foaming polypropylene sheet comprises the following four components in percentage by weight: 60-80 percent of polypropylene resin, 5-10 percent of cross-linking agent, 0.1-1 percent of anti-aging agent and 10-30 percent foaming agent. The invention sufficiently combines the characteristics of material properties and production processes, overcomes the defect that the strength of a polypropylene melt quickly descends after the temperature is higher than the melting point by utilizing an irradiation method and prepares a product with good properties, and the properties of tensile strength, elongation at break, and the like of the material are obviously improved.

Description

technical field [0001] The invention relates to a novel high-magnification cross-linked foamed polypropylene sheet (IXPP) and a preparation method thereof. Background technique [0002] The high-magnification cross-linked foamed polypropylene sheet (IXPP) has been used abroad for 40 years. At present, this product is still blank in China and mainly depends on imports. Due to good thermal weldability, high-magnification cross-linked foamed polypropylene sheets can be used for car roofs; and, because of their good thermal processing properties, they can be used in the construction of control boxes and shockproof panels. In addition, the high-magnification cross-linked foamed polypropylene sheet can also be used to prepare steering wheels, luggage compartment linings, and steam barrier panels for air conditioners, guard panels, door inner panels, energy-absorbing protection pads, cushions, headrests, etc. In areas that require higher working temperatures, such as sun visors, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K5/103C08K5/101C08J9/10B29C47/92B29C71/04B29C48/92
CPCB29C48/92B29C2948/92704B29C2948/92895
Inventor 钟果平
Owner 钟果平
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