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Melamine-Free Additive Complex for POM

一种三聚氰胺、添加剂的技术，应用在高分子有机抗氧化剂与光稳定剂复合体领域，达到消除自由基、稳定抗氧化剂、提升热稳定的效果

Inactive Publication Date: 2017-10-20
FDC LEES CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, regardless of the copolymerization or substitution reaction, the molecular structure of polyoxymethylene still has the problem of autooxidation.

Method used

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  • Melamine-Free Additive Complex for POM
  • Melamine-Free Additive Complex for POM
  • Melamine-Free Additive Complex for POM

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In the polyoxymethylene compound without melamine compound additive in this embodiment, the light stabilizer 770 is selected as the amine stabilizer, and the antioxidant 245 is selected as the antioxidant. The antacid is selected from aluminum magnesium hydrotalcite, and the lubricant is selected from N,N'-ethylenebisstearamide. The composition ratio of each component is respectively, 100 parts by weight of polyoxymethylene resin, 0.45 parts by weight of antioxidant 245, 0.1 part by weight of light stabilizer 770, 0.2 parts by weight of aluminum magnesium hydrotalcite and 0.1 part by weight of N,N'-ethylene bis Stearamide.

[0025] It should be noted that the manufacturing method of the polyoxymethylene compound is to mix the above ingredients evenly, and then put them into a twin-screw extruder for extrusion, and there are 13 temperature settings for each section of the extruder, and they are respectively 180°C, 200°C ℃, 200℃, 200℃, 200℃, 200℃, 200℃, 200℃, 200℃, 200℃,...

Embodiment 2

[0027]In the polyoxymethylene compound without melamine compound additive in this embodiment, light stabilizer 944 is selected as the amine stabilizer. The antioxidant is selected from antioxidant 1010 and composite structure 2462. The antacid is selected from aluminum magnesium hydrotalcite, and the lubricant is selected from N,N'-ethylenebisstearamide. The composition ratio of each component is respectively, 100 parts by weight of polyoxymethylene resin, 0.05 parts by weight of light stabilizer 944, 0.3 parts by weight of antioxidant 1010, 0.2 parts by weight of composite structure 2462, 0.2 parts by weight of aluminum magnesium hydrotalcite and 0.1 parts by weight of N , N'-ethylene bis stearamide. In addition, the method for preparing the polyoxymethylene compound is the same as that of Example 1, and will not be repeated here.

Embodiment 3

[0029] In the polyoxymethylene compound without melamine compound additive in this embodiment, dioctadecyl hydroxylamine and light stabilizer 3346 are selected as the amine stabilizer. Antioxidant is to select antioxidant 1330 for use, antacid is to select aluminum-magnesium hydrotalcite for use, and lubricant is to select glyceryl monostearate for use. The composition ratio of each component is respectively, 100 parts by weight polyoxymethylene resin, 0.05 parts by weight of dioctadecyl hydroxylamine, 0.45 parts by weight of antioxidant 1330, 0.05 parts by weight of light stabilizer 3346, 0.2 parts by weight of aluminum magnesium hydrotalcite and 0.1 parts by weight of part glyceryl monostearate. In addition, the method for preparing the polyoxymethylene compound is the same as that of Example 1, and will not be repeated here.

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Abstract

The invention provides a melamine-free composite additive for polyoxymethylene. The composite additive includes an amine stabilizer and an antioxidant. The content of the amine stabilizer is 0.01 to 3.0 parts by weight relative to 100 parts by weight of polyoxymethylene. The content of the antioxidant is 0.05 to 3.0 parts by weight relative to 100 parts by weight of polyoxymethylene. The composite additive of the invention has good light stability and thermal stability when used in polyoxymethylene.

Description

technical field [0001] The invention relates to a complex of high molecular organic antioxidant and light stabilizer, in particular to a complex of high molecular organic antioxidant and light stabilizer for polyoxymethylene. Background technique [0002] Polyoxymethylene is a polymer with high crystallinity and high melting point. Polyoxymethylene has poor thermal stability, and when heated, it will release small molecular weight substances such as formaldehyde or formic acid, causing the plastic to crack. Therefore, the industry adopts the method of copolymerization to modify polyoxymethylene to improve its thermal stability. For example, it can be copolymerized with cyclic ether compounds, and the thermal stability of polyoxymethylene can be improved through a small amount of carbon-carbon (cc) copolymerized chains in the copolymer. In European Patent EP.128739 (1984), trioxane (trioxane) is used to carry out copolymerization reaction with polyoxymethylene. [0003] In...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L59/00C08K13/02C08K5/3435C08K5/17C08K5/098C08K3/26C08K5/20C08K5/103
CPCC08K5/34924C08K5/103C08K5/13C08K5/134C08K5/20C08K5/3435
Inventor 谢树泓陈桢凯李昆昌
Owner FDC LEES CHEM IND