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Low-density polyvinyl chloride foaming material and preparation method thereof

A technology for polyvinyl chloride and foaming materials, applied in the field of low-density polyvinyl chloride foaming materials and their preparation, can solve the problems of high cost, low density, poor flame retardant performance, etc. Low, overcoming high cost effect

Active Publication Date: 2014-08-27
SHANDONG RIKE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The first technical problem to be solved by the present invention is: aiming at the defects of high cost and poor flame retardancy of polystyrene foam materials in the prior art, to provide a low density, good flame retardancy that can completely replace polystyrene foam Low Density Polyvinyl Chloride Foamed Materials
[0009] The second technical problem to be solved by the present invention is: aiming at the defects of high cost and poor flame retardancy of polystyrene foam materials in the prior art, to provide a low density, good flame retardancy that can completely replace polystyrene foam The preparation method of low-density polyvinyl chloride foam material of foam material

Method used

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  • Low-density polyvinyl chloride foaming material and preparation method thereof
  • Low-density polyvinyl chloride foaming material and preparation method thereof
  • Low-density polyvinyl chloride foaming material and preparation method thereof

Examples

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preparation example Construction

[0094] The foamed material was prepared according to the same preparation method and extrusion process of Comparative Example 1-7, and the melt strength and melt elongation at break were detected according to the testing standard of Comparative Example 1-7. The experimental data are shown in Table 6 and figure 2 , the density of the foamed rod at three points A, B, and C is 0.856, 0.522, and 0.297 g / cm, respectively. 3 .

[0095] Table 6 Melt strength and melt elongation at break data of Comparative Examples 8-14

[0096]

[0097] By Table 6 and figure 2 It can be seen that with the increase of the amount of foaming regulator in the polyvinyl chloride foam formulation, the melt strength gradually increases, and its main advantage is that it can still ensure higher melt elongation at break with the increase of melt strength length. we are at figure 2 Three points A, B and C are marked in the middle, and their effects on the density and cell structure of the foamed rod...

Embodiment 15

[0106] The preparation process of Example 15 is as follows: adding the raw materials of the foaming material into a high-speed mixer, adding polyvinyl chloride resin and organotin stabilizer at 51°C; adding stearic acid, oxidized polyethylene wax, paraffin, Sodium bicarbonate and azodicarbonamide; add lubricating processing aids and foaming regulators at 69°C; add calcium carbonate and titanium dioxide at 74°C, then mix at 108°C, pass through a 40-mesh sieve, and pass through a screw The extruder is melted and extruded, and the barrel temperature of the screw extruder includes a temperature range of 154 ° C, 159 ° C, 164 ° C, 159 ° C and 159 ° C, and the main speed of the screw extruder is 6.5 rpm. The pulling speed during extrusion was 1.8 m / min.

Embodiment 16

[0107] The preparation process of Example 16 is as follows: adding the raw materials of the foaming material into a high-speed mixer, adding polyvinyl chloride resin and calcium-zinc stabilizer at 52° C.; adding paraffin, oxidized polyethylene wax, calcium stearate at 61° C. , potassium bicarbonate and azodicarbonamide; add lubricating processing aids and foaming regulators at 70°C; add calcium carbonate and optical brightener at 76°C, then mix at 106°C and pass through a 40-mesh sieve , melt extruded through a screw extruder, the barrel temperature of the screw extruder includes a temperature range of 156 ° C, 161 ° C, 166 ° C, 161 ° C and 161 ° C, and the main engine speed of the screw extruder is 7.5rpm, The pulling speed during the melt extrusion was 2.2 m / min.

[0108] The melt strength and melt elongation at break were detected according to the testing standards of Comparative Examples 1-7. The experimental data are shown in Table 7. The density and cell structure result...

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Abstract

The invention discloses a low-density polyvinyl chloride foaming material with the density ranging from 0.10 g / cm<3> to 0.20 g / cm<3>. The low-density polyvinyl chloride foaming material comprises, by weight, 100 parts of polyvinyl chloride resin, 2 parts to 40 parts of foaming adjusting agents, 0.5 part to 5 parts of heat stabilizers, 0.5 part to 3 parts of thermal decomposition organic foaming agents, 0.5 part to 3 parts of thermal decomposition inorganic foaming agents, 1 part to 2 parts of lubrication type processing auxiliaries, 0 part to 30 parts of smoke suppression agents, 0 part to 30 parts of fire retardants, 0 part to 30 parts of filling agents, 0 part to 5 parts of lubricating agents and 0 part to 10 parts of pigment. The polyvinyl chloride replaces polystyrene in the prior art, and the foaming material with the low density is prepared to replace a polystyrene foaming material in the prior art. The production cost of the foaming material is reduced, and the low-density polyvinyl chloride foaming material can be used in the fields of building, packaging, furniture industries and the like.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride foaming materials, in particular to a low-density polyvinyl chloride foaming material and a preparation technology thereof. Background technique [0002] Polyvinyl chloride (PVC) is a general-purpose thermoplastic with excellent performance, and it is one of the largest plastic varieties in my country. Polyvinyl chloride has the advantages of good flame retardancy, corrosion resistance, high mechanical strength, good electrical insulation, and low cost, but at the same time, it also has the disadvantages of poor photothermal stability, low impact strength, poor processing and forming performance, and high density. Therefore, various stabilizers, processing aids and impact modifiers must be added during the processing of PVC to improve its light / thermal stability, processability and impact resistance. By adding a foaming agent and a processing aid to the polyvinyl chloride resin, a poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L51/06C08L23/28C08L33/10C08J9/10C08J9/08C08K13/02B29C47/92B29B7/00B29C48/92
CPCB29C2947/92685B29C47/92B29C48/92B29C2948/9259B29C2948/92685B29C2948/92704B29C2948/92895
Inventor 赵东日
Owner SHANDONG RIKE CHEM
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