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Composite material used for PVC heat stabilizers, and preparation method thereof

A composite material and heat stabilizer technology, applied in the field of PVC heat stabilizer, can solve the problems of affecting the dispersibility of organic matter matrix, large surface energy, serious coloring, etc., to achieve excellent thermal stability, reduce surface energy, and improve compatibility. Effect

Active Publication Date: 2017-03-29
ZHAOQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, because the hydrotalcite laminate has an active group -OH, the surface energy is large, it is easy to form hydrogen bonds to produce soft agglomerates, and condense with coordinated water molecules to produce hard agglomerates, which affects its dispersion in organic matrices. Poor affinity for organic materials
When domestic hydrotalcite is used as a PVC heat stabilizer, the initial coloration is severe, while high-quality hydrotalcite often relies on imports and is expensive
[0005] At present, there is no information about Hang Jin 2 in the literature # / Report on Hydrotalcite Composite Materials

Method used

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  • Composite material used for PVC heat stabilizers, and preparation method thereof
  • Composite material used for PVC heat stabilizers, and preparation method thereof
  • Composite material used for PVC heat stabilizers, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Hang Jin 2 # Preparation of soil / hydrotalcite composites

[0028] Weigh 200g Hang Jin 2 # Soil, add 800ml of hydrochloric acid with a mass fraction of 15%, reflux and stir at 80°C for 2 hours, cool, filter, wash the filter cake until neutral, dry and pulverize to obtain activated clay L1. The XRD figure of the activated clay of gained sees figure 1 .

[0029] Weigh 5.0g activated clay L1, add 50ml deionized water, 0.050g Span-60, reflux and stir at 90°C for 3 hours, then slowly add 0.25g dimethyldiethoxysilane, and reflux and stir for 4 hours, Slurry M1 was prepared.

[0030] Weigh 50.0 g of hydrotalcite, add 375 ml of deionized water, reflux and stir at 90° C. for 1 hour, then slowly add 2.5 g of dimethyldimethoxysilane, and reflux and stir for 3 hours to obtain slurry N1.

[0031] Mix slurry M1 and slurry N1, adjust the pH of the mixed slurry to 10 with sodium hydroxide, stir at 150°C for 3 hours, cool, wash, dry and pulverize the filter cake to obtain...

Embodiment 2

[0032] Example 2: Hang Jin 2 # Preparation of soil / hydrotalcite composites

[0033] Weigh 100g Hang Jin 2 # Soil, add 400ml of sulfuric acid with a mass fraction of 20%, reflux and stir at 95°C for 4 hours, cool, filter, wash the filter cake until neutral, dry and pulverize to obtain activated clay L2.

[0034] Weigh 10.0g activated clay L2, add 60ml deionized water, 0.050g sodium stearate benzenesulfonate, reflux and stir at 80°C for 3 hours, then slowly add 1.0g octyltrimethoxysilane, and reflux and stir for 3 hours , to prepare slurry M2.

[0035] Weigh 50.0 g of hydrotalcite, add 350 ml of deionized water, reflux and stir at 80° C. for 1 hour, then slowly add 1.50 g of octyltrimethoxysilane, and reflux and stir for 3 hours to obtain slurry N2.

[0036] Mix slurry M2 and slurry N2, adjust the pH of the mixed slurry to 11 with sodium hydroxide, stir at 120°C for 4 hours, cool, wash, dry and pulverize the filter cake to obtain Hangjin 2 # Soil / hydrotalcite composite G2. ...

Embodiment 3

[0037] Example 3: Hang Jin 2 # Preparation of soil / hydrotalcite composites

[0038] Weigh 150g Hang Jin 2 # Add 600ml of pyrophosphoric acid with a mass fraction of 12%, reflux and stir at 105°C for 1.5 hours, cool, filter, wash the filter cake until neutral, dry and pulverize to obtain activated clay L3.

[0039]Weigh 7.0g activated clay L3, add 40ml deionized water, 0.14g glyceryl monostearate, reflux and stir at 100°C for 3 hours, then slowly add 0.49g diethyldimethoxysilane, and reflux and stir for 2.5 hours, slurry M3 was prepared.

[0040] Weigh 50g of hydrotalcite, add 350ml of deionized water, reflux and stir at 100°C for 1 hour, then slowly add 3.5g of diethyldimethoxysilane, and reflux and stir for 2.5 hours to obtain slurry N3.

[0041] Mix slurry M3 and slurry N3, adjust the pH of the mixed slurry to 9 with sodium hydroxide, stir at 140°C for 3.5 hours, cool, wash, dry and pulverize the filter cake to obtain Hangjin 2 # Soil / hydrotalcite composite G3.

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PUM

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Abstract

The invention relates to a composite material used for PVC heat stabilizers. The novel composite material Hangjin 2# soil / hydrotalcite is produced from Hangjin 2# soil with abundant reserves and low price and self-made hydrotalcite through using a silane coupling agent grafting technology, and has a good effect when used in the PVC heat stabilizers. Adoption of the cheap Hangjin 2# soil as a raw material reduces the production cost of the composite material and makes the composite material have better performances than imported DANSUK hydrotalcite.

Description

technical field [0001] The invention relates to the field of PVC heat stabilizers, in particular to a composite material used for PVC heat stabilizers and a preparation method thereof. Background technique [0002] Hang Jin 2 # Soil is a natural clay mineral produced in Hangjinhou Banner, Inner Mongolia. This mineral is rich in reserves, easy to mine, and low in price. Its main components include attapulgite, illite, chlorite, feldspar, calcite, and rare earth elements. The mineral has a layered structure, and after acid modification, the pore volume and specific surface area increase, and it has strong ion exchange, adsorption and decolorization properties. Currently, Hang Jin 2 # Soil is mainly used in adsorption materials, decolorizers, permeable bricks, catalysts and carriers, and there is no literature report on its application in PVC heat stabilizers. [0003] Hydrotalcites (LDHs) are a class of anionic compounds with a layered structure. In Japan, it was reported i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/06C08K9/02C08K3/26C08K3/34C08L27/06
CPCC08K3/26C08K3/34C08K9/02C08K9/06C08L27/06
Inventor 郝向英沈冠华
Owner ZHAOQING UNIV
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