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Sericite modified ultraviolet resistant polymer master batch and composite material

A technology of composite materials and sericite, which is applied in the field of anti-ultraviolet polymer masterbatch and its composite materials, can solve the problems of complicated process, high cost and high cost of anti-ultraviolet agent, and achieve the effect of simplifying the production process and stabilizing the quality

Inactive Publication Date: 2008-10-29
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of the anti-ultraviolet agent used in the above patents is relatively high, while the reserve of sericite in my country is very abundant, the pulverization and stripping process is relatively simple, and the output is quite large
Although the Chinese patent CN101148523 can obtain polyethylene color masterbatch with good UV resistance by adding carbon black, the color masterbatch is black, which limits the use of the masterbatch
Chinese patent CN101058679 inserts TiO between sericite layers 2 To improve the anti-ultraviolet performance, although the anti-ultraviolet effect has a certain improvement compared with the simple sericite sheet, the process is complicated, the cost is high, and the user is difficult to accept, while the simple sericite sheet can fully meet the anti-ultraviolet requirements, and lower price

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A high-diameter-thick-ratio sericite (1200 mesh) filler is baked at 120°C for 2 to 3 hours to prepare a mixture of γ-aminopropyltriethoxysilane and white oil, and put it in a high-mixer at 70°C , mixed for 8-10 minutes. Add polypropylene and activated filler into the high-speed mixer, and the mixing time is 10-15 minutes. The mixture is granulated and extruded at 180-200°C to form master batches. Masterbatch mass ratio formula:

[0019] Sericite 70

[0020] γ-Aminopropyltriethoxysilane 1.5

[0021] White oil 1.5

[0022] Polypropylene 30

[0023] The masterbatch prepared above is mixed with polypropylene in a mass ratio of 1:2, and then directly injected.

[0024] The plastic made by embodiment 1 is pressed into a film with a thickness of 0.2mm. In the 200-350nm ultraviolet segment, its diffuse reflectance is lower than 5%, and the ratio of transmitted light intensity to incident light intensity is less than 10. -2 , mainly to absorb ultraviolet light, using the A...

Embodiment 2

[0026] A high-diameter-thick-ratio sericite (350 mesh) filler was baked at 120°C for 2 to 3 hours to prepare a mixture of γ-aminopropyltriethoxysilane and white oil, and put it in a high-mixer at 70°C , mixed for 8-10 minutes. Add polypropylene and activated filler into the high-speed mixer, and the mixing time is 10-15 minutes. The mixture is granulated and extruded at 180-200°C to form master batches. Masterbatch mass ratio formula:

[0027] Sericite 70

[0028] γ-Aminopropyltriethoxysilane 1.5

[0029] White oil 1.5

[0030] Polypropylene 30

[0031] The masterbatch prepared above is mixed with polypropylene in a mass ratio of 1:2, and then directly injected.

[0032] The plastic made by embodiment 2 is pressed into a 0.2mm thick film, in the 200~350nm ultraviolet segment, its diffuse reflectance is lower than 5%, and the ratio of transmitted light intensity and incident light intensity is less than 10 -2 , mainly to absorb ultraviolet light, using the American Q-SUN ...

Embodiment 3

[0034]A high-diameter-thick-ratio sericite (350 mesh) filler is baked at 120°C for 2 to 3 hours to prepare a mixture of 3-methacryloxypropyltrimethoxysilane KH570 and white oil, and put it into a high-mixing In the machine, mix at 70°C for 8-10 minutes. Add high-density polyethylene and activated filler into the high-speed mixer, and the mixing time is 10-15 minutes. The mixture is granulated and extruded at 140-160°C to form master batches. Masterbatch mass ratio formula:

[0035] Sericite 80

[0036] 3-Methacryloxypropyltrimethoxysilane 3.0

[0037] White oil 5.0

[0038] HDPE 20

[0039] The masterbatch prepared above is mixed with polyethylene in a mass ratio of 1:3, and then directly injected.

[0040] The plastic made by embodiment 3 is pressed into a 0.2mm thick film, in the 200~350nm ultraviolet section, its diffuse reflectance is lower than 5%, and the ratio of transmitted light intensity and incident light intensity is less than 10 -2 , mainly to absorb ultravi...

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Abstract

The invention discloses a sericite-modified UV-resistant polymer master batch and a composite material thereof. The composite material of polyolefine and master batch has parallel orientation of sericite with high diameter-thickness ratio in plastics. The ultraviolet absorption rate of the material is more than or equal to 90%. The sericite-modified UV-resistant polymer master batch is composed of surfactant-modified sericite and polymers, wherein the polymers account for 5-30% of the total weight of sericite and polymers, and the surfactant accounts for 3-8% of the total weight of sericite and polymers.

Description

technical field [0001] The invention relates to a master batch and its composite material, more specifically to a sericite-modified anti-ultraviolet polymer master batch and its composite material. Background technique [0002] As a natural layered silicate mineral, sericite is very abundant in our country. Sericite dissociates completely and can be split into extremely thin flakes with a thickness of less than 1um (in theory, it can be cut to 0.001um), with a large diameter-to-thickness ratio; silky luster (glassy luster of muscovite), pure block Gray, purple rose, white, etc., specific gravity 2.6-2.7g / cm 3 , Hardness 2~3, rich elasticity, bendable, good wear resistance and wear resistance; heat-resistant insulation, difficult to dissolve in acid-base solution, stable chemical properties. The mica produced by the wet pulverization process ensures a large flake aspect ratio. [0003] After proper modification, sericite is filled into plastics, rubber and their composite ...

Claims

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Application Information

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IPC IPC(8): C08L23/00C08L23/08C08K9/04C08K3/34C08J3/22
Inventor 王庭慰张军江国栋
Owner NANJING UNIV OF TECH
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