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Composite stabilizer for epoxy resin, and preparation method thereof

A composite stabilizer and epoxy resin technology, applied in the field of composite stabilizers, can solve the problems of not mentioning the influence of the appearance of the light stabilization system, not mentioning the light stabilization system, etc., so as to facilitate large-scale production and improve the anti-aging performance. , the effect of less control points

Inactive Publication Date: 2015-11-18
SUNSHOW SPECIALTY CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the above patents mentions the use of benzamidines and phosphite stabilizers as a light stabilization system for epoxy resins, and neither mentions the impact of the light stabilization system on the appearance of the product

Method used

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  • Composite stabilizer for epoxy resin, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A composite stabilizer, weighed according to mass percentage: stabilizer a 20%; stabilizer b 80%, its preparation method is to add the above-mentioned raw materials to an anchor type or ribbon type stirrer, stir at a speed of 60rpm for 0.2h to make them evenly mixed , out of vested products.

[0025] The composite stabilizer is added as a plastic additive to the epoxy resin matrix for modification, and the added amount is 0.5% of the mass of the matrix.

Embodiment 2

[0027] A composite stabilizer, weighed according to mass percentage: stabilizer a 30%; stabilizer b 70%, its preparation method is to add the above-mentioned raw materials to an anchor type or ribbon type stirrer, stir at a speed of 50rpm for 0.4h to make it evenly mixed , out of vested products.

[0028] The composite stabilizer is added as a plastic additive to the epoxy resin matrix for modification, and the added amount is 0.5% of the mass of the matrix.

Embodiment 3

[0030] A composite stabilizer, weighed according to mass percentage: stabilizer a 40%; stabilizer b 60%, its preparation method is to add the above-mentioned raw materials to an anchor type or ribbon type stirrer, stir at a speed of 70rpm for 0.5h to make it evenly mixed , out of vested products.

[0031] The composite stabilizer is added as a plastic additive to the epoxy resin matrix for modification, and the added amount is 0.8% of the mass of the matrix.

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Abstract

The invention concretely provides a special composite stabilizer capable of substantially improving the ageing resistance of epoxy resin and having no influences on the initial color of a product. The composite stabilizer comprises 45-75 mass% of a stabilizer a and 35-55 mass% of a stabilizer b. The preparation method comprises the following steps: weighing above two components in proportion, sequentially adding the two component substances into a mixing kettle, and carrying out normal stirring at a rotating speed of 40-180rpm through using an anchor or helix ribbon type stirrer for 0.2-1.0h to uniformly mix in order to obtain the composite stabilizer. The composite stabilizer added to the epoxy resin product can substantially improve the light stability, the thermal ageing resistance of the product, has no influences on the initial color of the product, greatly prolongs the service life of the product, and guarantees no change of the appearance (such as transparence and initial color) of the product.

Description

technical field [0001] Specifically, the invention relates to a composite stabilizer capable of improving the aging resistance of epoxy resin products without affecting the product appearance (such as transparency, initial color, etc.) and a preparation method thereof. technical background [0002] Epoxy resin (Epoxyresin) refers to a class of polymer materials polymerized by epoxy compounds containing two or more epoxy groups and curing agents. It is mainly used for casting, laminating, impregnating, adhesives, Paint and other products. Compared with other types of thermosetting resins, epoxy resins are the most widely used category. As long as proper curing agents, resins, modifiers and fillers are selected, epoxy resin products with various properties can be obtained. [0003] Compared with other types of thermosetting resins, the weather resistance of epoxy resin is poor, and it is prone to yellowing during storage, transportation and use, which affects the appearance o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K5/29C08K5/524C08K5/526
Inventor 蔡智奇宫青海
Owner SUNSHOW SPECIALTY CHEM CO LTD
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