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Foamed polypropylene composite sheet and preparation method thereof

A foamed polypropylene and composite sheet technology, applied in the field of materials, can solve problems such as VOC cannot be realized, VOC can be reduced, and cannot be known, and the effects of avoiding collapse and shrinkage, increasing foaming ratio, and uniform raw materials can be achieved

Active Publication Date: 2019-12-10
合肥森烨轻质塑料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this patent uses foamed polypropylene and polyvinyl chloride as the composite material, it does not involve the adjustment of the foamed polypropylene itself, and it is impossible to know how to reduce VOC, and the records of the examples only mention the composition of the composite material. Hydrogen sulfide gas pollution parameters, and due to the use of plasticizers and adhesives, VOC reduction cannot be achieved

Method used

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  • Foamed polypropylene composite sheet and preparation method thereof
  • Foamed polypropylene composite sheet and preparation method thereof
  • Foamed polypropylene composite sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] In this embodiment, the following methods and ingredients are used to prepare a foamed polypropylene composite sheet:

[0051] (1) The weighed attapulgite with a length-to-diameter ratio of 5:1 and a particle size of 30μm and Lubote YY-502 are stirred at high speed for 10 minutes, and then the weighed high-melt strength polypropylene and EPS30R are polymerized. Propylene was added to it and stirred at low speed for 5 minutes, and the mixture was extruded and pelletized at 240°C to obtain a special foam material. The weight ratios of the ingredients in the special foam material were:

[0052]

[0053] (2) Add the special foaming material of step (1) into the supercritical foaming screw extruder, and accurately inject CO in the metering section 2 Liquid, control the injection volume to be 3% of the foaming special material, the foaming ratio is 5, adjust the temperature of the extruder to 140℃, and adjust the pressure to 8.0MPa to make CO 2 It is in a supercritical state. After...

Embodiment 2

[0059] In this embodiment, the following methods and ingredients are used to prepare a foamed polypropylene composite sheet:

[0060] (1) The weighed attapulgite with a length-to-diameter ratio of 7:1 and a particle size of 10μm and Lubote YY-702 are stirred at high speed for 5 minutes, and then the weighed high-melt strength polypropylene and EPS30R are polymerized. Propylene was added to it and stirred at low speed for 3 minutes, and the mixture was extruded and pelletized at 220°C to obtain a special foaming material. The weight ratios of the components in the special foaming material are:

[0061]

[0062] (2) Add the special foaming material of step (1) into the supercritical foaming screw extruder, and accurately inject CO in the metering section 2 Liquid, control the injection volume to be 3% of the foaming special material, the foaming ratio is 5 times, adjust the temperature of the extruder to 240℃, and adjust the pressure to 20MPa to make CO 2 It is in a supercritical stat...

Embodiment 3

[0069] In this embodiment, the following methods and ingredients are used to prepare a foamed polypropylene composite sheet:

[0070] (1) The weighed wollastonite with a length-to-diameter ratio of 18:1 and a particle size of 50μm, and the ultra-dispersants Lubote YY-502 and YY-702 (ratio 1:3) are stirred at high speed for 10 minutes, and then Add the weighed high-melt strength polypropylene and EPS30R polypropylene into them and stir at low speed for 5 minutes to obtain the mixture, extrude and granulate at 230°C to obtain the foaming special material. The weight ratio of each component in the foaming special material is respectively for:

[0071]

[0072] (2) Add the special foaming material of step (1) into the supercritical foaming screw extruder, and accurately inject CO in the metering section 2 Liquid, control the injection volume to be 0.3% of the special foaming material, the foaming ratio is 2, adjust the temperature of the extruder to 170℃, and adjust the pressure to 12....

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Abstract

The invention discloses a foamed polypropylene composite sheet and a preparation method thereof. The foamed polypropylene composite sheet comprises a toughening layer, a reinforcing layer and a core layer sequentially from outside to inside, wherein the toughening layer comprises crosslinked foamed polypropylene with the surface composited with a thermoplastic elastomer or polyvinyl chloride, thereinforcing layer comprises a polyester / polyolefin / organic montmorillonite compound, the core layer comprises a foamed composite material with the foaming ratio being 2-5 times, the thickness of the composite sheet is 4-6 mm, and the bending modulus of the composite sheet is 1100-1400 MPa. According to the foamed polypropylene composite sheet, in the increasing process of the foaming ratio, the high bending strength is still maintained, due to the fact that high specific-surface and high surface activity inorganic particles are added into the composite sheet, the product has certain adsorptioncapacity for harmful gas, the purpose of reducing release of VOC is achieved, and the foamed polypropylene composite sheet is suitable for being used and promoted.

Description

Technical field [0001] The invention belongs to the technical field of materials, and specifically relates to a foamed polypropylene composite sheet and a preparation method thereof. Background technique [0002] In recent years, with the development of polypropylene modified materials, its physical and mechanical properties and processing properties have been greatly improved, and have been widely used in automotive interior decoration. Among them, the overall performance of supercritical physical foamed polypropylene is higher than that of the currently commercialized PE / PS / PU foam materials, and it is the preferred material to achieve environmental friendliness and performance guarantee at the same time, and can replace PS / PE and some PU foams. Materials, used in the manufacture of packaging and mechanical parts, have a huge market development space and become a hot spot for the development of new functional plastics. [0003] However, the foamed polypropylene material also has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/36B32B27/20B32B27/32B32B7/12B32B27/30C08J9/12C08L67/02C08L23/12C08L91/06C08K3/34B29C48/08B29C65/50B29B9/06
CPCB29B9/06B32B5/18B32B7/12B32B27/065B32B27/20B32B27/304B32B27/32B32B27/36B32B2255/10B32B2255/26B32B2266/025B29C48/0021B29C48/08C08J9/0061C08J9/0066C08J9/122C08J2203/06C08J2203/08C08J2323/12C08J2423/12C08L67/02C08L2205/035C08L23/12C08L91/06C08L51/06C08K3/346
Inventor 王玲何顺涛何顺伦侯建鸣赵志刚
Owner 合肥森烨轻质塑料科技有限责任公司
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