Check patentability & draft patents in minutes with Patsnap Eureka AI!

Compound stable additive for rigid PVC (polyvinyl chloride) and preparation method of compound stable additive

A thermal stabilization additive and hard technology, applied in the field of light rare earth hydrotalcite composite thermal stabilization additive for rigid PVC and its preparation, to achieve green production and application, abundant raw material sources, and low cost

Active Publication Date: 2013-10-23
唐山博亚树脂有限公司
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these rare earth hydrotalcites are used in catalysts, fluorescent materials, etc., and there are few reports on light rare earth hydrotalcites used as PVC thermal stability additives.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Compound stable additive for rigid PVC (polyvinyl chloride) and preparation method of compound stable additive

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0038] 1. Examples of Stabilizing Aids and Preparation Methods

[0039] The weight ratio of calcium stearate to zinc stearate in the calcium zinc agent described in the following examples is 5:1, and the preparation process is as described above.

Embodiment 1

[0040] Embodiment 1: Lanthanum-magnesium hydrotalcite / calcium-zinc composite stabilizing aid (by weight)

[0041] Preparation of lanthanum-magnesium hydrotalcite: weigh 51.3 g Mg(NO 3 ) 2 ·6H 2 O and 43.3 g La(NO 3 ) 3 ·6H 2 O, formulated as a mixed aqueous solution, where La 3+ The amount of substance is 0.1 mol; weigh 21.2 g Na 2 CO 3 and 24.0 g NaOH to form a mixed aqueous solution. Add the above two solutions to 1.2 L deionized water at a rate of 5 mL / min, keep the pH value at 11.5±0.1, and the reaction temperature at 90 o C, after the dropwise addition, continue to stir for 2 h. Afterwards, the reaction mixture was at 90 o C aging for 12 h, filtering, washing, drying, and grinding to obtain lanthanum-magnesium hydrotalcite.

[0042]Premix 50 g of lanthanum-magnesium hydrotalcite and 20 g of calcium-zinc o C. After mechanical stirring and mixing for 3 h, cool to room temperature and grind evenly to obtain lanthanum-magnesium hydrotalcite / calcium-zinc composite ...

Embodiment 2

[0043] Embodiment 2: Neodymium-europium-magnesium hydrotalcite / calcium-zinc composite thermal stabilization aid

[0044] Weigh 17.1 g Mg(NO 3 ) 2 ·6H 2 O, 8.8 g Nd(NO 3 ) 3 ·6H 2 O and 5.9 g Eu(NO 3 ) 3 ·6H 2 O, formulated as a mixed aqueous solution, in which Nd 3+ The amount of substance is 0.1 mol; weigh 7.1 g Na 2 CO 3 and 8.0 g NaOH to make a mixed aqueous solution. Add the above two solutions to 0.4 L deionized water at a rate of 9 mL / min, keep the pH value at 11.5±0.1, and the reaction temperature at 70 o C, after the dropwise addition, continue to stir for 2 h. Afterwards, the reaction mixture was heated at 80 o C aging for 12 h, filtering, washing, drying, and grinding to obtain neodymium-europium-magnesium hydrotalcite.

[0045] Premix 25 g neodymium-europium-magnesium hydrotalcite and 50 g calcium-zinc o C. After mechanical stirring and mixing for 3 h, cool to room temperature and grind evenly to obtain a neodymium-europium-magnesium hydrotalcite / calc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a compound stable additive for rigid PVC (polyvinyl chloride) and a preparation method of the compound stable additive. The compound stable additive comprises the following components in parts by weight: 50-100 parts of light rare earth-magnesium hydrotalcite and 20-200 parts of a Calcium-Zinc agent. The preparation method comprises the following steps of: preparing the light rare earth-magnesium hydrotalcite; preparing the Calcium-Zinc agent, premixing the light rare earth-magnesium hydrotalcite and the Calcium-Zinc agent, cooling to the room temperature, and grinding uniformly to obtain the light rare earth-magnesium hydrotalcite / Calcium-Zinc compound stable additive. The light rare earth-magnesium hydrotalcite / Calcium-Zinc compound stable additive is prepared by compounding the light rare earth-magnesium hydrotalcite and the Calcium-Zinc agent, the source of raw materials is abundant, volatile organic substances are avoided, the formula and the preparation technology are simple, the cost is low, and green production and application are met. The light rare earth-magnesium hydrotalcite / Calcium-Zinc compound stable additive has an excellent processing thermostabilization effect on the rigid PVC and meanwhile has a self-lubricating performance, excellent impact strength and favorable toughness.

Description

[0001] technical field [0002] The invention relates to the field of polyvinyl chloride molding processing, in particular to an environment-friendly light rare earth hydrotalcite composite heat stabilization additive for rigid PVC used in polyvinyl chloride molding processing and a preparation method thereof. Background technique [0003] Rare earth compounds have become a hotspot in the research, development and application of new thermal stability additives for polyvinyl chloride (PVC) due to the many empty orbitals of rare earth elements, the large ionic radius of rare earth metal ions, and the environmental friendliness of rare earth compounds. Rare earth elements can coordinate with the active chlorine on the PVC chain to inhibit the removal of HCl through price change, metal-like soap action and rare earth complexation; absorb and neutralize HCl, inhibit the catalytic effect of HCl on the degradation of PVC; capture free radicals And adsorb ionic impurities, improve t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L27/06C08K5/098C08K3/26
Inventor 李德玲张宁苏桂仙于静
Owner 唐山博亚树脂有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com