Polymer wax powder with self-repairing function, and preparation method thereof

A polymer and self-repairing technology, which is applied in the field of polymers, can solve the problems of coating material adhesion, flexibility, surface hardness, and large-scale application of materials, and achieve obvious self-repairing effect, hardness improvement, and prolongation. The effect of service life

Active Publication Date: 2020-03-17
NANJING TIANSHI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while satisfying the self-healing function of the coating, the new material system is often difficult to take into account the adhesion, flexibility, surface hardness and other properties of the coating material, which makes the material unable to be applied on a large scale

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for preparing polymer wax powder with self-repairing function, characterized in that the preparation method comprises the following steps:

[0032] 1) Mix the ingredients

[0033] Polyethylene wax, allyl bisphenol A epoxy resin, hydroxyalkylamide, silane coupling agent, carboxyl-terminated saturated polyester and accelerator are mixed, and the weight proportion of each component is:

[0034] Polyethylene wax 55 parts

[0035] Allyl bisphenol A shrink epoxy resin 15 parts

[0036] Hydroxyalkylamide 1.5 parts

[0037] Allyltrimethoxysilane 2 parts

[0038] Allyltriethoxysilane 1 part

[0039] 0.5 parts by weight of γ-methacryloxypropyltrimethoxysilane

[0040] Carboxyl-terminated saturated polyester 20 parts by weight

[0041] Nanoscale zinc oxide 2 parts by weight

[0042] Tetraisobutyl titanate 2 parts by weight

[0043] Zinc acetylacetonate 1 part by weight

[0044] 2) Melt extrusion

[0045] Add above-mentioned batching into twin-screw extruder, coo...

Embodiment 2

[0062] The preparation method of the present embodiment is the same as that of Example 1, except that the parts by weight of each component are different, as follows:

[0063] Polyethylene wax 75 parts

[0064] Allyl bisphenol A shrink epoxy resin 20 parts

[0065] 2 parts hydroxyalkylamide

[0066] Allyltrimethoxysilane 2 parts

[0067] Vinyltriethoxysilane 1 part

[0068] 0.5 parts by weight of γ-methacryloxypropyltrimethoxysilane

[0069] Carboxyl-terminated saturated polyester 15 parts by weight

[0070] Nanoscale zinc oxide 2 parts by weight

[0071] 1 part by weight of tetraisobutyl titanate

[0072] Zinc acetylacetonate 1 part by weight

[0073] Add the above-mentioned self-healing functional polymer wax powder into the epoxy polyester powder coating,

[0074] E-12 bisphenol A glycidyl ether epoxy resin (Anhui Shanfu 604U) 108 kg

[0075] Polyester (New Chinese French 6055) 160 kg

[0076] Leveling agent 5 kg

[0077] 701B 4kg

[0078] Benzoin 2 kg

[0079] S...

Embodiment 3

[0085] The preparation method of the present embodiment is the same as that of Example 1, except that the parts by weight of each component are different, as follows:

[0086] Polyethylene wax 60 parts

[0087] Allyl bisphenol A shrink epoxy resin 10 parts

[0088] 1 part hydroxyalkylamide

[0089] Allyl triethoxysilane 1 part

[0090] Vinyltriethoxysilane 1 part

[0091] 0.5 parts by weight of γ-methacryloxypropyltrimethoxysilane

[0092] Carboxyl-terminated saturated polyester 10 parts by weight

[0093] Nanoscale zinc oxide 1 part by weight

[0094] 1 part by weight of tetraisobutyl titanate

[0095] Add the above-mentioned self-healing functional polymer wax powder into the epoxy polyester powder coating,

[0096] E-12 bisphenol A glycidyl ether epoxy resin (Anhui Shanfu 604U) 108 kg

[0097] Polyester (New Chinese French 5086) 108kg

[0098] Leveling agent 4 kg

[0099] 701B 3.2kg

[0100] Benzoin 1.7 kg

[0101] Self-healing wax powder 40 kg

[0102] Barium ...

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Abstract

The invention relates to a polymer wax powder with a self-repairing function, and a preparation method thereof. The polymer wax powder is prepared from, by weight, 55-75 parts of polyethylene wax, 1-20 parts of allyl bisphenol A epoxy resin, 0.5-2 parts of hydroxyalkylamide, 0.5-5 parts of a silane coupling agent, 5-25 parts of carboxyl-terminated saturated polyester and 0.5-5 parts of an accelerant. The preparation method comprises the steps of ingredient mixing, melt extrusion, micronization, electron irradiation crosslinking and the like. The composite polymer wax micro-powder with the average particle size of 1-75 [mu]m can be prepared, and the wax micro-powder can be used as a polyester or epoxy polyester powder coating self-repairing functional additive to improve the surface hardness of a powder coating, enhance the stain resistance and make the coating material have the self-repairing function.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a polymer wax powder with self-repairing function and a preparation method thereof. Background technique [0002] In recent years, low molecular weight polyethylene wax has been widely used in coatings, inks, leather, paper and other industries due to its excellent cold resistance, heat resistance, and abrasion resistance, endowing it with excellent friction resistance and stain resistance sex. In the past ten years, through partial introduction and independent research and development in China, breakthroughs have been made in the key technologies of special polyethylene wax materials, processes and equipment, and the quality has gradually reached the level of advanced foreign products. [0003] Polyethylene wax powder can be added to the powder coating as a functional additive, which can improve the hydrophobicity and friction resistance of the coating surface, and the appeara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/24C08J3/28C08L23/06C08L63/00C08L67/00C08K5/20C08K5/54C08G81/02C09D5/03C09D5/16C09D7/65C09D7/63
CPCC08J3/24C08J3/28C08G81/024C09D5/033C09D5/1687C08J2323/06C08J2463/00C08J2467/00C08K5/20C08K5/54
Inventor 于海阔任华顾婷婷孟祥康
Owner NANJING TIANSHI NEW MATERIAL TECH
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