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Long-acting zinc-based heat stabilizer having antibacterial performance, synthetic method and compound

A heat stabilizer and zinc-based heat technology, applied in the direction of zinc organic compounds, can solve the problems of deep color of PVC test pieces, achieve excellent antibacterial performance, simple synthesis and compounding process, and delay zinc burning.

Active Publication Date: 2015-11-11
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this zinc salt causes the initial color of the PVC test piece to be darker
In addition, although some transition metal complexes with Schiff bases as ligands have been proved to have antiviral and antibacterial biological activities, as far as we know, these complexes have not been used for antibacterial in PVC products.

Method used

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  • Long-acting zinc-based heat stabilizer having antibacterial performance, synthetic method and compound
  • Long-acting zinc-based heat stabilizer having antibacterial performance, synthetic method and compound
  • Long-acting zinc-based heat stabilizer having antibacterial performance, synthetic method and compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: with 100gPVC resin, 20gDOP and 5gZn 3 (HL) 2 (CH 3 COO) 4 According to the above PVC sample preparation method, PVC samples were prepared, and the thermal stability and antibacterial properties were tested according to the above test standards. The specific results are shown in Table 1.

Embodiment 2

[0039] Embodiment 2: Mixing formula: 100g PVC resin, 20g DOP and 5g composite heat stabilizer (ie heat stabilizer compound). Preparation of PVC sample, test method and data list are the same as in Example 1. Among them, the composite heat stabilizer contains: 3.8gZn 3 (HL) 2 (CH 3 COO) 4 and 1.2gPER.

Embodiment 3

[0040] Embodiment 3: Mixing formula: 100g PVC resin, 20g DOP and 5g composite thermal stabilizer. Preparation of PVC sample, test method and data list are the same as in Example 1. Among them, the composite heat stabilizer contains: 3.8gZn 3 (HL) 2 (CH 3 COO) 4 , 0.8gPER and 0.4gDBM.

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Abstract

The invention relates to a long-acting zinc-based heat stabilizer having an antibacterial performance, a synthetic method and a compound. The heat stabilizer is a zinc-containing product formed by synthesizing Schiff base N1, N3-bi(salicylaldehyde) diethylene triamine (H2L) that is used as a ligand and zinc acetate dehydrate, and a chemical composition of the heat stabilizer is Zn3(HL)2(CH3COO)4. The heat stabilizer can be used as a main heat stabilizer to inhibit the heat aging of polyvinyl chloride (PVC); 5 to 10 parts of the heat stabilizer, 0 to 15 parts of stearate soap, 1 to 3 parts of auxiliary heat stabilizer, 5 to 7 parts of inner lubricating agent and 0 to 5 parts of outer lubricating agent can be used for preparing a heat stabilizer compound which is used for processing PVC. A test result shows that a PVC test piece with the heat stabilizer compound can inhibit a zinc burning phenomenon and also can inhibit colibacillus and staphylococcus aureus. The zinc-based heat stabilizer and a compound thereof are simple in production process, low in cost, small in addition amount, safe and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of polyvinyl chloride (PVC) heat stabilizers and antibacterial agents, and in particular relates to a long-acting zinc-based heat stabilizer with antibacterial properties, a synthesis method and a compound thereof. Background technique [0002] Polyvinyl chloride (PVC) is one of the five general-purpose plastics. It has the advantages of high strength, corrosion resistance, good electrical insulation, and flame retardant. Coupled with mature production technology, PVC is widely used in various fields of industry and agriculture. However, PVC is a heat-sensitive plastic, which will be thermally degraded at a temperature far lower than its processing requirements, resulting in deterioration of its mechanical and chemical properties. agent. [0003] Among many PVC heat stabilizers, calcium-zinc composite heat stabilizers (such as calcium stearate (CaSt 2 ) / zinc stearate (ZnSt 2 ) composite system) has been a...

Claims

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Application Information

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IPC IPC(8): C08K5/00C08L27/06C08K5/12C08K5/098C08K5/053C07F3/06
Inventor 姚有为邱晨
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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