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Preparation method and application of master batch used for polyvinylidene fluoride film

A polyvinylidene fluoride and film technology, which is applied in the field of plastic coloring, can solve problems such as poor processing performance and film defects, and achieve the effects of reducing film forming defects, increasing melt fluidity, and uniform film performance

Active Publication Date: 2014-11-19
DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of good melt flow performance, excellent processability, good dispersibility of inorganic filler, etc. for the problems of the above-mentioned fluorine-containing film, such as poor processability or many film defects due to uneven dispersion of inorganic pigments. PVDF-based film forming masterbatch with good comprehensive performance

Method used

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  • Preparation method and application of master batch used for polyvinylidene fluoride film
  • Preparation method and application of master batch used for polyvinylidene fluoride film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh the raw materials according to the formula in Table 1, and mix them uniformly in a high-speed mixer at room temperature until the materials are uniformly stirred. After cooling, granulation, and drying, a high-melt fluidity color masterbatch for polyvinylidene fluoride film is obtained.

[0034] Add the masterbatch into the single-screw extrusion casting machine for melting and plasticizing, the melting and plasticizing temperature is 190-220 °C, the screw speed is 30 r / min, and then pass through the sheet / film die, the die temperature is 230 °C, and the flow rate is 230 °C. The film is formed by a stretching device, and then the film is subjected to heat treatment at 140° C. to shape, and then the edge is trimmed. After corona treatment, the film is cooled and wound to obtain a polyvinylidene fluoride-based film.

[0035] The above film is made into a 25μm thick film, and its tensile strength is tested according to ASTM D882 standard, its thermal shrinkage rate i...

Embodiment 2

[0037] Weigh the raw materials according to the formula in Table 1, and mix them uniformly in a high-speed mixer at room temperature until the materials are uniformly stirred. After cooling, granulation, and drying, a high-melt fluidity color masterbatch for polyvinylidene fluoride film is obtained.

[0038] Add the masterbatch into the single-screw extrusion casting machine for melting and plasticizing, the melting and plasticizing temperature is 200-230 ℃, the screw speed is 20r / min, and then pass through the sheet / film die, the die temperature is 220 ℃, through the flow The film is formed by stretching and stretching device, and then the film is heat-treated at 150° C. to shape, then trimmed, and cooled and rolled after corona treatment to obtain a polyvinylidene fluoride-based film.

[0039] The above film is made into a 25μm thick film, and its tensile strength is tested according to ASTM D882 standard, its thermal shrinkage rate is tested according to ISO 11501 standard,...

Embodiment 3

[0041] Weigh the raw materials according to the formula in Table 1, and mix them uniformly in a high-speed mixer at room temperature until the materials are uniformly stirred. After cooling, granulation, and drying, a high-melt fluidity color masterbatch for polyvinylidene fluoride film is obtained.

[0042] Add the masterbatch into the single-screw extrusion casting machine for melting and plasticizing, the melting and plasticizing temperature is 210-230 ℃, the screw speed is 50r / min, and then pass through the sheet / film die, the die temperature is 220 ℃, through the flow The film is formed by stretching and stretching device, and then the film is heat-treated at 150° C. to shape, then trimmed, and cooled and rolled after corona treatment to obtain a polyvinylidene fluoride-based film.

[0043]The above film is made into a 25μm thick film, and its tensile strength is tested according to ASTM D882 standard, its thermal shrinkage rate is tested according to ISO 11501 standard, ...

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Abstract

The invention discloses a preparation method of a master batch used for a polyvinylidene fluoride film. The preparation method comprises the steps of mixing a polyvinylidene fluoride A resin, a polyvinylidene fluoride B resin, polymethyl methacrylate, titanium dioxide, a mobility modifier and an inner lubricating agent at a room temperature until the materials are stirred uniformly, melt-extruding, cooling and granulating at a temperature of 150-250 DEG C, and drying to obtain the master batch. According to a standard of GB / T3682-2000, melt indexes of the polyvinylidene fluoride A resin and polyvinylidene fluoride B resin at a temperature of 230 DEG C and a load of 5 kg is 30-60 g / 10 min and 3-20 g / 10 min respectively. Performances such as tensile strength and thermal shrinkage of the film prepared by the preparation method provided by the invention are greatly improved.

Description

technical field [0001] The invention relates to the field of plastic coloring, in particular to a preparation method and application of color masterbatch for polyvinylidene fluoride film. Background technique [0002] Polyvinylidene fluoride (PVDF) is homopolymerized from vinylidene fluoride (VDF). It is a thermoplastic with excellent properties and is widely used in industrial processes. Although the melting point (165-180°C) and decomposition temperature (>350°C) of PVDF are quite different, and the processing temperature is wide, its high crystallinity, high viscosity and poor fluidity result in poor processing ability. [0003] In practical applications, due to the good compatibility between polymethyl methacrylate (PMMA) and PVDF, PMMA can be appropriately added to reduce the crystallinity of PVDF, improve the processing plasticity of PVDF, and reduce the material in the production process. the cost of. However, PMMA is far inferior to PVDF in weather resistance an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/16C08L33/12C08K13/02C08K3/22C08K5/12C08K5/098C08J3/22
Inventor 程丛杨华军汤诚
Owner DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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