Preparation of environment friendly calcium-zinc composite heat stabilizer and its application in PVC (polrvinyl chloride)

A heat stabilizer and calcium-zinc composite technology, applied in the field of material science application technology development, can solve problems such as human health hazards, achieve the effects of preventing thermal decomposition, broad application prospects, and strengthening absorption

Inactive Publication Date: 2012-08-01
JIANGNAN UNIV
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, in recent years, with the improvement of environmental protection awareness in various countries around the world, plastic products such as medicine and food packaging, daily necessities, toys, etc. have put forward higher purity and hygiene requirements for plasticizers such as DOP, and DOP has certain toxicity. At present, most

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
  • Preparation of environment friendly calcium-zinc composite heat stabilizer and its application in PVC (polrvinyl chloride)
  • Preparation of environment friendly calcium-zinc composite heat stabilizer and its application in PVC (polrvinyl chloride)
  • Preparation of environment friendly calcium-zinc composite heat stabilizer and its application in PVC (polrvinyl chloride)

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1:

[0019] The preparation method of epoxy oleate calcium (zinc) is as follows: In a 250ml three-necked flask equipped with a stirrer, a thermometer and a constant pressure funnel, add 20g oleic acid, a certain quality of formic acid (88%), and the stirring speed is controlled at 180r / Min, the water bath is heated to 60°C, and hydrogen peroxide is added dropwise during the reaction. The speed is controlled at 5-8d / min, and the drop is completed within 1 hour. Then the reaction is kept at a constant temperature for 4 hours. The reaction product is allowed to stand for stratification, and the upper oily product is taken. Dissolve 15g of NaOH in 450ml of water, heat to 90°C, then slowly add the refined epoxy oleic acid product, heat and stir, adjust the pH to around 8-9, stir and react at 90°C for 1 hour to obtain epoxy oil Sodium. 18g CaCl 2 (Or 27.5g ZnCl 2 ) Dissolve in 100g of water, slowly add to the sodium epoxide oleate solution, adjust the pH to around 9, a...

Example Embodiment

[0020] Example 2

[0021] The compound of epoxy calcium zinc oleate compound stabilizer and a certain amount of epoxy soybean oil as plasticizer

[0022] Add 40 parts of epoxy soybean oil and 4g of epoxy zinc oleate to 100 parts of PVC and mix at high speed for 5 minutes.

Example Embodiment

[0023] Example 3

[0024] The compound of epoxy calcium zinc oleate compound stabilizer and a certain amount of epoxy soybean oil as plasticizer

[0025] Add 40g epoxy soybean oil, 3g epoxy zinc oleate, 1g epoxy calcium oleate to 100g PVC, and mix at high speed for 5 minutes.

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 relates to preparation of an environment friendly calcium-zinc composite heat stabilizer and its application in PVC (polrvinyl chloride). The composite stabilizer is obtained by compounding of epoxy calcium oleate and epoxy zinc oleate in certain proportion. Specifically, the epoxy calcium oleate and epoxy zinc oleate take oleic acid, formic acid, and hydrogen peroxide as the raw materials, which are first synthesized into epoxy oleate. Then through double decomposition reaction, the corresponding epoxy calcium oleate and epoxy zinc oleate can be synthesized. The epoxy calcium oleate and epoxy zinc oleate compounded heat stabilizer can coordinate with active chlorine on PVC to effectively prevent HCl (hydrogen chloride) desorption reaction, and can also adsorb and neutralize HCl to eliminate catalytic reaction on PVC degradation. The calcium-zinc composite heat stabilizer of the invention overcomes the shortcomings of toxicity, expensiveness, short heat stable time and the like in traditional heat stabilizers. Epoxy calcium oleate and epoxy zinc oleate are compounded for the first time, and a certain amount of epoxy soybean oil is taken as a plasticizer. Congo red tests and heat aging tests show that the heat stabilizer has good stabilizing effect and low cost, so that the calcium-zinc composite heat stabilizer of the invention has a good application prospect in the field of PVC processing.

Description

technical field [0001] The invention belongs to the field of material science application technology development, and relates to the preparation of an environment-friendly calcium-zinc composite heat stabilizer and its related application in PVC. Background technique [0002] Polyvinyl chloride (PVC) is one of the five general-purpose plastics. It has the advantages of good chemical corrosion resistance, electrical insulation and low cost. It is widely used in various fields in industry, agriculture, electronics and people's daily life. . However, PVC has the disadvantages of poor thermal stability and serious degradation at normal processing temperatures, which will lead to problems such as a decline in the physical and mechanical properties of PVC materials and a gradual deepening of the color. Therefore, appropriate heat stabilizers must be added during PVC processing to inhibit its degradation. Heat stabilizers can inhibit the degradation of PVC by replacing unstable c...

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): C08K5/1515C08L27/06
Inventor 陈明清阮晓凯倪忠斌东为富夏鹏蒋利华
Owner JIANGNAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap