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A kind of low-density polyvinyl chloride foam material and preparation method thereof

A technology of polyvinyl chloride and foaming materials, applied in the field of low-density polyvinyl chloride foaming materials and its preparation, can solve the problems of low density, poor flame retardancy, and high cost, and achieve low density and overcome poor flame retardancy , to overcome the effect of high cost

Active Publication Date: 2016-06-08
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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  • A kind of low-density polyvinyl chloride foam material and preparation method thereof
  • A kind of low-density polyvinyl chloride foam material and preparation method thereof
  • A kind of low-density polyvinyl chloride foam material and preparation method thereof

Examples

Experimental program
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preparation example Construction

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

[0095] Table 6 comparative examples 8-14 melt strength and melt elongation at break data

[0096]

[0097] From Table 6 and figure 2 It can be seen that with the increase of the amount of foaming regulator in the PVC foaming formula, the melt strength gradually increases. long rate. we are at figure 2 Mark three points A, B, and C in the middle, and compare their influence on the density and cell structure of the foamed rod as follows: Figure 4 As shown, when the amount of foam regulator is small ( figure 2 As shown in point A), the melt ...

Embodiment 15

[0106] The preparation process of Example 15 is: 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 wax, Sodium bicarbonate and azodicarbonamide; add lubricating processing aids and foam regulators at 69°C; add calcium carbonate and titanium dioxide at 74°C, then complete the mixing at 108°C, pass through a 40-mesh sieve, and pass through the screw The extruder is melted and extruded, the barrel temperature of the screw extruder includes the temperature ranges of 154°C, 159°C, 164°C, 159°C and 159°C, the main engine speed of the screw extruder is 6.5rpm, and the melting The pulling speed during extrusion was 1.8 m / min.

Embodiment 16

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

[0108] Detect melt strength and melt elongation at break according to the detection standards of Comparative Examples 1-7, the experimental data are shown in Table 7, and the density and cell str...

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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 its preparation technology. Background technique [0002] Polyvinyl chloride (PVC) is a general-purpose thermoplastic with excellent performance, and it is one of the plastic varieties with the largest output 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 disadvantages such as poor light and heat 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 / heat stability, processing performance and impact resistance. By adding foaming agent and processing aids to polyvinyl chloride re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L51/06C08L23/28C08L33/10C08J9/10C08J9/08C08K13/02B29C47/92B29B7/00B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92685B29C2948/92704B29C2948/92895
Inventor 赵东日
Owner SHANDONG RIKE CHEM
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