Polychloroethylene / organic modified sheet silicate nano-composite material

A technology of nanocomposite materials and layered silicate, which is applied in the field of nanocomposite materials and its preparation, can solve the problems of no significant improvement in the performance of PVC, achieve the effects of increasing added value, simple production process, and improving thermal stability

Inactive Publication Date: 2008-11-12
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this system, montmorillonite is only used as the carrier of the plasticizer DOP, and there is no bondi

Method used

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  • Polychloroethylene / organic modified sheet silicate nano-composite material
  • Polychloroethylene / organic modified sheet silicate nano-composite material
  • Polychloroethylene / organic modified sheet silicate nano-composite material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1

[0038] Mix 100g of PVC resin with 3g of organotin stabilizer, 1.0g of lubricant, and 2g of other additives in a high-speed mixer. Discharge at about 110°C, and then mix the mixture with 1g of unmodified sodium-based montmorillonite (MMT) Melt and blend on a two-roll plastic mill at a temperature of about 170°C. After 8 minutes, the sheets are discharged, and then molded into 1mm and 4mm plates on a semi-automatic pressure forming machine at about 185°C, and cut and prepared for use.

[0039]WAXD was used to determine the interlayer spacing of the montmorillonite in the sample, and the sample was analyzed by scanning electron microscopy and transmission electron microscopy. The results showed that most of the sodium-based montmorillonite was dispersed in the PVC matrix in the form of agglomerated particles, indicating that the PVC macromolecules did not Intercalation enters between the montmorillonite layers, and the sodium-based montmorillonite and PVC just form...

Example Embodiment

[0042] Example 2

[0043] Add 5g PVC resin, 10g unmodified sodium-based montmorillonite (MMT) and 15g organic modifier polyoxyethylene-polyoxypropylene copolymer (EP) into 50g tetrahydrofuran solvent, stir for about 2h; then evaporate the tetrahydrofuran Solvent to obtain organically modified montmorillonite.

[0044] Mix 100g of polyvinyl chloride resin with 3g of organotin stabilizer, 0.5g of lubricant, and 1.0g of other additives in a high-speed mixer, discharge at about 110°C, and then mix the mixture with the above-mentioned organically modified montmorillonite 2.5g was melted and blended on a two-roll plasticizer at a temperature of about 170°C, and the sheet was discharged after 8 minutes, and then molded into 1mm and 4mm plates on a semi-automatic pressure forming machine at 185°C, and cut and prepared for use.

[0045] WAXD was used to determine the interlayer spacing of montmorillonite in the material, and the samples were analyzed by scanning electron microscope and tra...

Example Embodiment

[0048] Example 3

[0049] Dilute the coupling agent KH-560 with ethanol at a ratio of 1:10, take the coupling agent (the amount is 1% of the weight of illite) and illite, stir and blend in a high-speed mixer, and put it in an oven at about 100°C. 1h, the material is discharged for standby.

[0050] Mix 100g of polyvinyl chloride resin with 5g of organotin stabilizer, 2g of lubricant, and 2g of other additives in a high-speed mixer. Discharge at about 110°C, and then mix the mixture with 3g of coupling agent modified illite. Melt and blend on a two-roll plastic mill at a temperature of about 170°C. After 8 minutes, the sheets are discharged, and then molded into 1mm and 4mm plates on a semi-automatic pressure forming machine at about 185°C. The samples are cut and prepared for use.

[0051] WAXD was used to determine the interlayer spacing of illite in the material, and the samples were analyzed by scanning electron microscopy and transmission electron microscopy. The results showe...

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PUM

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Abstract

The invention provides a polyvinyl chloride/organic modified phyllosilicate nanophase composite material and a method for preparing the same. The compositions of the raw materials of the composite material mainly comprise polyvinyl chloride substrates, organic modified phyllosilicates, heat stabilizer, lubricant and processing agent. The composite material is prepared by adoption of the fusing and mixing technology. Compared with a polyvinyl chloride/ phyllosilicate composite material in the prior art, the polyvinyl chloride/organic modified phyllosilicate nanophase composite material provided by the invention obviously improves the toughness, the strength and the modulus of the material and also greatly improves the thermal stability, the dimensional stability, the age resistance and the barrier property. Moreover, the polyvinyl chloride/organic modified phyllosilicate nanophase composite material also has good flame-retarding and smoke-inhibiting properties. The polyvinyl chloride/organic modified phyllosilicate nanophase composite material has simple manufacturing technique, convenient operation and control, stable quality, high production efficiency, low production cost, wide application range and wide industrialization and market prospect.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride composite materials, and more specifically relates to a nanocomposite material using polyvinyl chloride and layered silicate as raw materials and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is one of the earliest industrialized and widely used general-purpose thermoplastics. It has the advantages of light weight, high strength, insulation, flame retardancy, corrosion resistance, excellent comprehensive performance, low price, and wide source of raw materials, but PVC also has disadvantages such as low impact strength, poor thermal stability, and poor fluidity. limit its use to a certain extent. People often use methods such as adding modifiers, fillers, elastomers, plasticizers, heat stabilizers, processing aids and flow modifiers to improve the performance of PVC. [0003] Studies have shown that when layered silicate is blended with polyvinyl...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K9/04C08K13/06
Inventor 郭少云李光照陈光顺
Owner SICHUAN UNIV
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