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Environment-friendly calcium zinc stabilizer for PVC pipe and preparation method thereof

A calcium-zinc stabilizer and a technology for PVC pipes, applied in the field of chemical stabilizers, can solve the problems of poor weather resistance and easy discoloration, and achieve the effects of good weather resistance and simple preparation method.

Active Publication Date: 2013-08-07
嘉兴若天新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the PVC pipe stabilizers currently on the market have poor weather resistance and are prone to discoloration

Method used

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  • Environment-friendly calcium zinc stabilizer for PVC pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] First take 20Kg magnesium-aluminum binary hydrotalcite (MgO / AL in magnesium-aluminum binary hydrotalcite 2 o 3 The molar ratio is 4.0:1) and 20Kg zinc-magnesium-aluminum ternary hydrotalcite (ZnO / MgO / AL in zinc-magnesium-aluminum ternary hydrotalcite 2 o 3 The molar ratio is 2:4:2) into the high-speed mixer, the speed of the high-speed mixer is 1000 r / min, stirring at 55 ° C for 5 min; then add 5Kg calcium stearate, 10Kg calcium benzoate, 5Kg stearic acid Zinc, 10Kg zinc benzoate, 10Kg butyl stearate, 5Kg ethoxyquinoline and 5Kg 2,4,6-collidine, stirred at 1000 r / min and 55°C for 10 min; finally add 5Kg of β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, 2Kg of dibenzoylmethane, 1Kg of ethyl acetoacetate and 2Kg of UV absorber UV-9, wherein the speed of the high-speed mixer is 1000 r / min, stirring at 55°C for 15 minutes, and cooling to obtain an environmentally friendly calcium-zinc stabilizer for PVC pipes.

Embodiment 2

[0066] First take 10Kg magnesium-aluminum binary hydrotalcite (MgO / AL in magnesium-aluminum binary hydrotalcite 2 o 3 The molar ratio is 4.5:1) and 20Kg zinc-magnesium-aluminum ternary hydrotalcite (ZnO / MgO / AL in zinc-magnesium-aluminum ternary hydrotalcite 2 o 3 The molar ratio is 4:2:2) into the high-speed mixer, the speed of the high-speed mixer is 1250 r / min, and stirred at 60°C for 10 min; then continue to add 15Kg calcium benzoate, 5Kg pentacarbon fatty acid calcium, 5Kg laurel Zinc acid, 10Kg zinc benzoate, 5Kg butyl monostearate, 10Kg liquid paraffin, 2Kg 3-picoline and 3Kg 2,3-dihydrobenzofuran, at a speed of 1250 r / min and a temperature of 60 Stir at ℃ for 10 min; finally add 5Kg of tris[2.4-di-tert-butylphenyl]phosphite, 2Kg of stearoylbenzoylmethane, 3Kg of dehydroacetic acid and 5Kg of ultraviolet absorber UV-327, among which The speed of the high-speed mixer is 1250 r / min, and the mixture is stirred at 60°C for 10 minutes. After cooling, an environmentally fri...

Embodiment 3

[0068] First take 10Kg magnesium-aluminum binary hydrotalcite (MgO / AL in magnesium-aluminum binary hydrotalcite 2 o 3 The molar ratio is 4.2:1) and 20Kg zinc-magnesium-aluminum ternary hydrotalcite (ZnO / MgO / AL in zinc-magnesium-aluminum ternary hydrotalcite 2 o 3 The molar ratio is 3:3:2) into the high-speed mixer, the speed of the high-speed mixer is 1500 r / min, stirring at 65 ° C for 5 min; then continue to add 5Kg heptadecanoic acid calcium, 10Kg dodecylbenzene Calcium acid calcium, 5Kg zinc dodecylbenzene sulfonate, 15Kg zinc stearate, 5Kg glyceryl monostearate, 5Kg paraffin wax and 10Kg 8-hydroxyquinoline and 5Kg 2,5-dimethylfuran, at the speed Stir at 1500 r / min and 65°C for 5 min; finally add 3Kg of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester, 1Kg of acetyl Acetone, 1Kg 2,3-pentanedione, 2Kg ultraviolet absorber UV-P and 3Kg ultraviolet absorber UV-320, wherein the speed of the high-speed mixer is 1500 r / min, stirred at 65°C for 20 ...

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Abstract

The invention relates to the technical field of chemical stabilizers, and particularly relates to an environment-friendly calcium zinc stabilizer for PVC pipes and a preparation method thereof. The environment-friendly calcium zinc stabilizer for PVC pipes comprises the following raw materials by mass: 10-30% of calcium salt main stabilizers, 10-30% of zinc salt main stabilizers, 30-50% of hydrotalcite, 10-20% of lubricants, 5-15% of heterocyclic compounds, 1-5% of anti-oxidants, 1-5% of ultraviolet absorbers, and 1-5% of auxiliary stabilizers. The preparation method of the environment-friendly calcium zinc stabilizer for PVC pipes comprises the following steps: dividing the raw materials into three sections, feeding into a high speed stirrer, stirring at 55-60 DEG C for 30 min with a stirrer rotating speed of 1000-1500 r / min. The environment-friendly calcium zinc stabilizer for PVC pipes prepared by the invention has good weatherability, and less toxicity.

Description

technical field [0001] The invention relates to the technical field of chemical stabilizers, in particular to an environment-friendly calcium-zinc stabilizer for PVC pipes and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC), stabilizers, processing modifiers and inorganic materials are properly mixed to produce various PVC plastic products for different purposes. The main components in the preparation of PVC pipes include polyvinyl chloride and stabilizers, among which the performance of stabilizers has a great influence on the stability of PVC pipes. [0003] Known heat stabilizers in the PVC industry mainly include lead salts, metal soaps, organotin, rare earth and Ca / Zn stabilizers, but the most widely used heat stabilizers are lead salts and metal soaps. Lead salt stabilizers are cheap and have good thermal stability effects, but they are highly toxic, seriously endangering human health and polluting the environment. Organotin stabi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K13/02C08K5/098C08K5/42C08K3/22C08K5/3437C08K5/3432C08K5/1535C08K5/32
Inventor 赖文华袁援卓
Owner 嘉兴若天新材料科技有限公司