Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Environmentally friendly heat stabilizer for pvc cables prepared from waste polyester and preparation method thereof

A technology of heat stabilizer and waste polyester, applied in the field of environmental protection heat stabilizer and its preparation, can solve the problems of hidden danger of human body and environment, high price, strong water absorption, etc., to improve the safety of use and stabilize the volume resistivity , the effect of improving heat resistance

Active Publication Date: 2017-07-07
JIANGSU ATE DONGTAI NEW MATERIALS TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The use of lead salt heat stabilizers has a long history, and the price is much cheaper than the same effective environmental stabilizers. Moreover, the volume resistivity of PVC cables using lead salt as a stabilization system has a good retention rate before and after immersion, but the disadvantage is that it poses safety hazards to humans and the environment
There is a big problem with this kind of stabilizer: the polyol has strong water absorption, which can easily lead to a serious drop in the volume resistivity of the PVC cable after being immersed in water, which affects the safety of the cable.
Stabilizers without polyols are helpful for stabilizing volume resistivity, but such stabilizers are expensive, which is an unacceptable pain for general enterprises
[0004] At present, there is a lack of an environmentally friendly thermal stabilizer for PVC cables that is affordable and does not reduce the volume resistivity of the product.

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
  • Environmentally friendly heat stabilizer for pvc cables prepared from waste polyester and preparation method thereof
  • Environmentally friendly heat stabilizer for pvc cables prepared from waste polyester and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] A kind of preparation method of the special environment-friendly heat stabilizer of PVC cable that waste polyester is prepared is characterized in that the specific steps of preparation method are:

[0023] (1) Under constant stirring, add terephthalic acid into the sodium hydroxide solution with a concentration of 2% to 7% according to the stoichiometric relationship. After the terephthalic acid is completely dissolved, add 0.5 % activated carbon, stirred for 10min to make it evenly dispersed in the solution, and then filtered to obtain a decolorized sodium terephthalate clarified solution;

[0024] (2) Under continuous stirring, add the mixed solution of calcium chloride solution and zinc chloride solution configured in advance in the sodium terephthalate clarified solution obtained in step (1), and continue at a speed of 100 to 800r / min Stir and react for 20-120 minutes to obtain a mixed system of calcium terephthalate and zinc terephthalate;

[0025] (3) Under cons...

Embodiment 1

[0033] The special environment-friendly heat stabilizer for PVC cable prepared by waste polyester comprises the following components by weight:

[0034] Calcium Stearate 15%, Zinc Stearate 15%, Calcium Terephthalate 35%, Zinc Terephthalate 18%, Calcium Hydroxide 10%, Beta-Diketone 2%, Antioxidant 2246 5% .

[0035] A kind of preparation method of the special environment-friendly heat stabilizer of PVC cable that waste polyester is prepared is characterized in that the specific steps of preparation method are:

[0036](1) Under constant stirring, add terephthalic acid into a sodium hydroxide solution with a concentration of 2% according to the stoichiometric relationship, and after the terephthalic acid is completely dissolved, add activated carbon that accounts for 0.5% by mass of the solution , stirred for 10 minutes to make it uniformly dispersed in the solution, and then filtered to obtain a decolorized sodium terephthalate clarified solution;

[0037] (2) under constant ...

Embodiment 2

[0046] The special environment-friendly heat stabilizer for PVC cable prepared by waste polyester comprises the following components by weight:

[0047] Calcium stearate 25%, zinc stearate 25%, calcium terephthalate 15%, zinc terephthalate 30%, calcium hydroxide 3.5%, β-diketone 0.5%, antioxidant (antioxidant The mass percentage of 2246 and antioxidant DLTP is 3:1) 1%.

[0048] A kind of preparation method of the special environment-friendly heat stabilizer of PVC cable that waste polyester is prepared is characterized in that the specific steps of preparation method are:

[0049] (1) Under constant stirring, add terephthalic acid into the sodium hydroxide solution with a concentration of 7% according to the stoichiometric relationship, and after the terephthalic acid is completely dissolved, add activated carbon that accounts for 0.5% by mass of the solution , stirred for 10 minutes to make it uniformly dispersed in the solution, and then filtered to obtain a decolorized sod...

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 discloses a specific environment-friendly heat stabilizer prepared from waste polyester for PVC cables and a preparation method thereof. The heat stabilizer is prepared from the following main components: calcium stearate, zinc stearate, calcium terephthalate, zinc terephthalate, calcium hydroxide, beta-diketone and antioxidant. The preparation method comprises the following steps: (1) dissolving PTA with alkali, and decolorizing with activated carbon; (2) reacting mixed liquid of calcium chloride and zinc chloride with the substance obtained in the step (1) for a certain period; (3) completely reacting stearic acid with a sodium hydroxide solution at 70 DEG C, and adding the mixed liquid of calcium chloride and zinc chloride to keep on reacting for a certain period; (4) mixing the substance obtained in the step (2) and the substance obtained in the step (3) under a stirring state for a certain period, centrifuging and drying to obtain an intermediate; and (5) uniformly mixing the intermediate, the calcium hydroxide, the beta-diketone and the antioxidant by virtue of a high-speed stirrer to obtain a finished product. The PTA is prepared by degrading waste polyester. According to the environment-friendly heat stabilizer, the volume resistivity of a PVC cable can be stabilized, the early color retention rate can be improved, and an effective means is provided to comprehensive utilization of the waste polyester resource.

Description

technical field [0001] The invention relates to a class of environmentally friendly thermal stabilizers and a preparation method thereof, in particular to a class of environmentally friendly thermal stabilizers special for PVC cables prepared from waste polyester and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) has the advantages of corrosion resistance and good comprehensive mechanical properties, and is widely used in wires and cables. However, PVC has poor thermal stability. During processing, because its decomposition temperature is lower than the processing temperature, it is easy to decompose and release HCl. Therefore, PVC must use heat stabilizers when processing. In addition, PVC cables have certain requirements on the volume resistivity retention rate after immersion in water, so the selected heat stabilizer cannot affect its volume resistivity retention rate. [0003] The use of lead salt heat stabilizers has a long histor...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K13/02C08K5/098C08K3/22C08K5/07
CPCC08K3/22C08K5/07C08K5/098C08K13/02C08K2003/2206C08K2201/014C08L27/06C08L2201/08C08L2203/202C08L91/06C08K2003/265
Inventor 蒋丽张莉娜方春平张宁胥成桃
Owner JIANGSU ATE DONGTAI NEW MATERIALS TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com