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Nano-PVC modifier and producing method thereof

A modifier and PVC resin technology, applied in the field of plastic modifiers, can solve problems that need to be improved, and achieve the effects of good dimensional stability, high melting point, and low water absorption

Active Publication Date: 2009-05-13
LUOHE KELAIBAO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the impact modifier is used in the production of PVC profiles, it can improve the performance of PVC profiles, but it still needs to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, nano-PVC modifier formula: represented by weight percent, whisker silicon 60% in the composition, dioctyl phthalate 10%, coupling agent stearyl titanate isopropyl ester 10%, dispersant B Bis stearic acid amide 10% and PVC resin 10%.

[0023] The preparation method of nano-PVC modifier: After weighing the raw materials according to the formula, add PVC resin, whisker silicon, dioctyl phthalate, coupling agent, and dispersant into the high-speed mixer in sequence, and stir at high speed until the material temperature Raise it to 120°C, transfer it to a cooling mixer for mixing, and when the temperature drops to 60°C, discharge the material; put the material into a granulator, knead and granulate at 160°C; then put it into a mill and grind it to obtain nano PVC modifier.

[0024] The use of nano PVC modifier:

[0025] The PVC modifier is used in existing PVC products and can replace the main material of PVC. The addition ratio is 20-25% of the main material...

Embodiment 2

[0026] Embodiment two, with the similarity of embodiment one no longer restate, difference is:

[0027] Nano-PVC modifier formula: 50% whisker silicon, 5% dioctyl phthalate, 20% coupling agent isopropyl stearyl titanate, 5% dispersant ethylene bis stearic acid amide and PVC resin 20%.

[0028] The preparation method is as follows: Add PVC resin, whisker silicon, dioctyl phthalate, coupling agent, and dispersant into a high-speed mixer in sequence, and stir at a high speed of 3000r / min until the temperature of the material rises to 110°C. Put it into a cooling mixer and mix until the temperature drops to 40°C, then discharge; knead and granulate at 150°C; then grind to obtain nano-PVC modifier.

[0029] The use of nano-PVC modifier: different from Example 1, the PVC modifier can be added and used in the original formula of PVC products, and the addition ratio is 20% of the raw material of PVC products. The PVC modifier should be cooled in the raw material. Add it during stirr...

Embodiment 3

[0030] Embodiment three, the similarity with embodiment one is no longer repeated, and difference is:

[0031] Nano-PVC modifier formula: 70% whisker silicon, 5% dioctyl phthalate, 5% coupling agent isopropyl stearyl titanate, 5% dispersant ethylene bis stearic acid amide and PVC resin 15%.

[0032] The preparation method is: add PVC resin, whisker silicon, dioctyl phthalate, coupling agent, and dispersant to the high-speed mixer in sequence, and stir at a high speed until the temperature of the material rises to 140°C, then transfer to the cooling mixer for mixing , when the temperature drops to 70°C, the material is discharged; mixed and granulated at 180°C; and then pulverized to obtain a nano-PVC modifier.

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Abstract

The invention discloses a nanometer PVC modifier and a method for producing the same. The nanometer PVC modifier comprises the following components in weight percentage: 50 to 70 percent of silicon whisker, 5 to 20 percent of dioctylphthalate, 5 to 20 percent of coupling agent, 5 to 20 percent of dispersing agent, and 5 to 20 percent of PVC resin. The method comprises the following steps: the raw materials are stirred at high speed in a high-speed mixer until the temperature of the materials is raised to between 110 and 140 DEG C, the materials are transferred into a cooling mixer, and the materials are discharged when the temperature is dropped to between 40 and 70 DEG C; the materials are mixed and granulated at a temperature of between 150 and 180 DEG C; and then the materials are ground to obtain the nanometer PVC modifier. The PVC modifier has the advantages of high strength, stable chemical performance, high temperature resistance, good insulativity and low oil absorbing rate, thus the modifier is a functionality-enhanced plasticizing material; and the PVC modifier has high melting point, and the refractoriness of the PVC modifier reaches 1,720 DEG C. The fire resistance and the heat distortion temperature of the PVC product are improved, and the cost of raw materials is lower; and the preparation method has the advantages of simple process, easy operation, less investment, and easy production.

Description

1. Technical field: [0001] The invention relates to a plastic modifier, in particular to a nano-PVC modifier and a production method thereof. 2. Background technology: [0002] Polyvinyl chloride (PVC) material has the advantages of good rigidity, high strength, flame retardancy, corrosion resistance, good electrical insulation, and adjustable hardness and softness, but it also has poor processing performance, low notched impact strength and heat distortion temperature, and thermal deformation. Poor stability and other shortcomings, so PVC plastic is difficult to replace engineering plastics, which greatly limits its application, which is a technical problem that the current market needs to solve. [0003] Impact modifier is a very important additive for PVC modification. With the development of PVC modification technology over the years, three major toughening systems have been gradually developed for PVC impact modifiers: CPE (chlorinated polyvinyl chloride) Ethylene) sys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/04C08K7/06B29B9/00B29B7/00
Inventor 李拴成李蕾樊海燕
Owner LUOHE KELAIBAO TECH CO LTD
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