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Delustering master batch for plastic and preparation method thereof

A technology for matting masterbatch and plastics, which is applied in the field of plastic processing and can solve the problems of affecting mechanical properties, reducing the mechanical properties of matting masterbatches, and difficult to disperse inorganic matting agents evenly.

Pending Publication Date: 2022-06-07
JIESHOU JINFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inorganic matting agent in this invention is difficult to disperse evenly in the carrier (i.e. the plastic matrix), which will cause the reduction of the mechanical properties of the matting master batch, and then affect the mechanical properties of the plastic made of the matting master batch.

Method used

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  • Delustering master batch for plastic and preparation method thereof
  • Delustering master batch for plastic and preparation method thereof
  • Delustering master batch for plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Extinct hyperbranched polymers are made by the following steps:

[0033]i. 0.1mol 4-hydroxybenzaldehyde, 0.2mol 4-hydroxyacetophenone, 0.21mol ammonium acetate and 300mL glacial acetic acid were stirred and heated to reflux, reacted for 3h, cooled to room temperature and poured into aqueous acetic acid (volume of acetic acid) The fraction is 50%) and precipitated, stirred for 10 min, filtered with suction, the crude product was recrystallized twice with absolute ethanol, and dried in vacuo to obtain 2,4,6-tris(4-hydroxyphenyl)pyridine;

[0034] ii. After mixing 0.1mol 2-(2'-hydroxy-5-methylphenyl)benzotriazole, 0.99g p-toluenesulfonic acid and 80mL tetrahydrofuran, then add 0.1mol 3-hydroxy-2-(hydroxyl Methyl)propionic acid, heated under reflux for 6 h, stopped the reaction, spin-dried, then dissolved in 80 mL of dichloromethane, washed with water several times, combined the organic phases, spin-evaporated, and dried to obtain a light-absorbing diol;

[0035] iii. Add ...

Embodiment 2

[0038] Extinct hyperbranched polymers are made by the following steps:

[0039] i. 0.1mol 4-hydroxybenzaldehyde, 0.2mol 4-hydroxyacetophenone, 0.23mol ammonium acetate and 300mL glacial acetic acid were stirred and heated to reflux, reacted for 3h, cooled to room temperature and poured into aqueous acetic acid (volume of acetic acid) The fraction is 50%) and precipitated, stirred for 10 min, filtered with suction, the crude product was recrystallized twice with absolute ethanol, and dried in vacuo to obtain 2,4,6-tris(4-hydroxyphenyl)pyridine;

[0040] ii. After mixing 0.1mol 2-(2'-hydroxy-5-methylphenyl)benzotriazole, 1.45g p-toluenesulfonic acid and 80mL tetrahydrofuran, then add 0.1mol 3-hydroxy-2-(hydroxyl Methyl)propionic acid, heated under reflux for 6 h, stopped the reaction, spin-dried, then dissolved in 80 mL of dichloromethane, washed with water several times, combined the organic phases, spin-evaporated, and dried to obtain a light-absorbing diol;

[0041] iii. Add...

Embodiment 3

[0044] Preparation of composite matting agent (inorganic matting agent with matting hyperbranched polymer grafted on the surface):

[0045] (1) At room temperature, ultrasonically disperse 3g KH560 in 80mL aqueous ethanol solution, then add 15g titanium dioxide powder, ultrasonically disperse for 15min, suction filter, wash with absolute ethanol, and dry to obtain epoxidized titanium dioxide, and the ethanol solution is composed of ethanol and water according to volume The ratio of 5:3 mixed composition;

[0046] (2) 10g of epoxidized titanium dioxide and 1.5g of the extinction hyperbranched polymer prepared in Example 1 were added to 80mL of ethanol, stirred for 3h, then heated to reflux, stopped stirring, and reacted under reflux for 1h, then cooled down and rotated and evaporated with ethanol Washed twice and dried in vacuum to obtain a composite matting agent.

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Abstract

The invention relates to a matting master batch for plastic and a preparation method of the matting master batch, and belongs to the technical field of plastic processing. The matting master batch for plastics comprises the following raw materials: matrix resin, a composite matting agent, a lubricant and a compatibilizer, the composite delustering agent is an inorganic delustering agent (titanium dioxide) of which the surface is grafted with a delustering hyperbranched polymer, and the delustering hyperbranched polymer contains a large amount of light absorption structures of pyridine rings and benzotriazole, so that the reflected light of the master batch is greatly reduced, and the delustering performance of the master batch is improved; thirdly, the dull hyperbranched polymer is grafted on the surface of titanium dioxide, so that the titanium dioxide is promoted to be uniformly dispersed in the master batch base material, and meanwhile, the grafted dull hyperbranched polymer and the master batch base material can generate the action of a polymer molecular chain, so that the migration of the titanium dioxide in the dull master batch base material is reduced; the effect of enhancing the matting performance and the mechanical performance of the matting master batch by the composite matting agent is promoted.

Description

technical field [0001] The invention belongs to the technical field of plastic processing, and in particular relates to a matting masterbatch for plastics and a preparation method thereof. Background technique [0002] Matt plastic refers to the plastic with matting effect on the surface of the plastic film to meet the requirements of various visual, aesthetic, advertising effects and other surface effects on its surface. Extinction is usually achieved by scattering light. There are two ways to achieve scattering: one is to increase the surface scattering of the product to eliminate light, and the other is to scatter from the body of the reinforced product to eliminate light. Surface scattering is achieved by improving the surface roughness of the product. The body eliminates the optical inhomogeneity inside the material. Optical inhomogeneity is caused by particles, molecules, and atoms inside the material, which is closely related to the physical properties of the material...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L25/06C08L23/08C08L33/20C08L87/00C08G83/00C08J3/22
CPCC08J3/226C08G83/001C08G83/005C08J2423/06C08J2423/12C08J2425/06C08J2423/08C08J2433/20C08J2487/00
Inventor 陈军杨大全陈俊青
Owner JIESHOU JINFENG PLASTIC
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