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Application of linear phenolic resin in serving as stable modifying agent

A technology of novolac resin and modifier, which is applied in the chemical industry, can solve the problems of low thermal stability and poor insulation performance of products, and achieve the effects of improving insulation performance, delaying yellowing time, and increasing thermal stability time

Inactive Publication Date: 2010-07-07
广东波斯科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention overcomes the shortcomings of existing non-toxic calcium-zinc composite stabilizers and rare earth stabilizers with low thermal stability and poor insulation performance of products, and provides a new stable modifier novolac resin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] PVC 100g, DOP 50g, CaCO 3 50g, calcium zinc stabilizer 6g, phenolic resin 0.5g double-roller tablet to measure Congo red discoloration time (measured according to GB9349-2002 standard).

[0025] Table 1 Congo red discoloration time / min

[0026] serial number

[0027] serial number

Embodiment 2

[0032] PVC 100g, TOTM 50g, CaCO 3 50g, calcium zinc stabilizer 6g, o-cresol formaldehyde resin (average molecular weight 1500) 1g. Extruded into a cable, soaked in water at 60 degrees Celsius for 14 days, measured the relative capacitance change rate between the 14th day and the 1st day, and the measurement result was 4.2.

Embodiment 3

[0037] PVC 100g, CaCO 3 10 g, 3 g of calcium zinc stabilizer, 0.3 g of isobutylene-terminated p-cresol formaldehyde resin (average molecular weight 5000). Carry out 180 degree oven aging after double-roller tableting, measure Db value with colorimeter after 50min 20 (Db value adopts Coloreye7000 colorimeter to measure, its value=difference of sample b value before and after oven aging, the bigger Db value is, the more yellowing obvious).

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PUM

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Abstract

The invention discloses application of a linear phenolic resin in serving as a stable modifying agent. The linear phenolic resin is prepared by performing condensation polymerization on a phenolic compound, an aldehyde compound and / or a vinyl compound. The average molecular weight of the linear phenolic resin is between 300 and 10,000. The linear phenolic resin can be applied to calcium-zinc and rare earth stabilizing agents, and also can be directly applied to halogen-containing polymers. The linear phenolic resin serving as the stable modifying agent can significantly improve the processing stability and the electric insulating property of the halogen-containing polymers.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a thermal stabilizer modifier for halogen-containing polymers. Background technique [0002] Halogen-containing polymers such as polyvinyl chloride have excellent corrosion resistance and mechanical properties, and are cheap, rich in raw materials, and mature in manufacturing technology. Their products are widely used in various fields of industrial and agricultural production. However, there is a fatal weakness in the processing of halogen-containing polymers, namely poor thermal stability. Heat stabilizers commonly used for halogen-containing polymers can be mainly divided into lead stabilizers, calcium-zinc stabilizers, organotin stabilizers, rare earth stabilizers, etc. according to their chemical composition. [0003] Lead salt stabilizer is the heat stabilizer with the longest application history and good effect. It is widely used in PVC profiles, pipes and insulating cabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08L27/06C08K3/26C08L61/08C08L27/24
Inventor 刘鹏卢俊文
Owner 广东波斯科技股份有限公司
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