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A kind of preparation method of polyethylene/calcium carbonate/sisal fiber microcrystalline composite material

A technology of sisal fiber and composite material, which is applied in the field of preparation of polyethylene/calcium carbonate/sisal fiber microcrystalline composite material, can solve the problems of poor thermal stability, hinder application, easy oxidation, etc., achieve low price, improve interface Compatible, source-rich effects

Active Publication Date: 2019-07-23
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the shortcomings of rosin, such as brittleness, easy oxidation, high acid value and poor thermal stability, it seriously hinders its application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Add 55.7g of dodecyl hydroxystearic acid into a three-necked flask, heat to 100°C, add 0.70g of p-toluenesulfonic acid after the dodecyl hydroxystearic acid is completely melted, then raise the temperature to 130°C, and react for 6 hours to produce To obtain twelve hydroxystearate.

[0016] (2) Add 4.12g of acrylpimaric acid to the dodecyl hydroxystearate prepared in step (1), and add 0.62g of p-toluenesulfonic acid, in N 2 Stir and heat up to 120° C. under protected conditions, and react at a constant temperature for 10 hours to obtain a dark brown viscous product, which is propylene pimaric acid grafted polydodecyl hydroxystearate.

[0017] (3) Weigh 40g of light calcium carbonate, 10g of sisal microcrystals, and 3.3g of the acrylic pimaric acid-grafted polydodecyl hydroxystearate prepared in step (2), and use a pulverizer at a speed of 3000 r / min Stir evenly under high pressure, then add 60g polyethylene and stir evenly, granulate in a twin-screw extruder with a...

Embodiment 2

[0020] (1) Add 83.6g of dodecyl hydroxystearic acid into a three-necked flask, heat it to 100°C, add 1.1g of p-toluenesulfonic acid after the dodecyl hydroxystearic acid is completely melted, then raise the temperature to 130°C, and react for 6 hours to obtain The product lauryl hydroxystearate.

[0021] (2) Add 6.18g propylene pimaric acid to the lauryl hydroxystearate that step (1) makes, and add 0.78g p-toluenesulfonic acid, in N 2 Stir and heat up to 120° C. under protected conditions, and react at a constant temperature for 10 hours to obtain a dark brown viscous product, which is propylene pimaric acid grafted polydodecyl hydroxystearate.

[0022] (3) Weigh 40g of light calcium carbonate, 10g of sisal microcrystals and 4.4g of acrylic pimaric acid grafted polydodecyl hydroxystearate prepared in step (2), and use a pulverizer at a speed of 3000 r / min Then add 60g of polyethylene and stir evenly, and then granulate in a twin-screw extruder with a rotation speed of 30 rpm ...

Embodiment 3

[0025] (1) Add 167.2g of dodecyl hydroxystearic acid into a three-necked flask, heat to 100°C, add 2.5g of p-toluenesulfonic acid after the dodecyl hydroxystearic acid is completely melted, then raise the temperature to 130°C, and react for 6 hours to obtain The product lauryl hydroxystearate.

[0026] (2) Add 12.4g propylene pimaric acid to the lauryl hydroxystearate that step (1) makes, and add 1.2g p-toluenesulfonic acid, in N 2 Stir and heat up to 120° C. under protected conditions, and react at a constant temperature for 10 hours to obtain a dark brown viscous product, which is propylene pimaric acid grafted polydodecyl hydroxystearate.

[0027] (3) Weigh 40g of light calcium carbonate, 10g of sisal microcrystals and 5.5g of acrylic pimaric acid grafted polydodecyl hydroxystearate prepared in step (2), and use a pulverizer at a speed of 3000 r / min Stir evenly, then add 60g of polyethylene and stir evenly, and granulate in a twin-screw extruder with a rotation speed of 30...

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Abstract

The invention discloses a preparation method of polyethylene / calcium carbonate / sisal fiber microcrystalline composite material. Add 55~170g of dodecyl hydroxystearic acid into a three-necked flask, heat to 95~105°C, add 0.5~3g of catalyst after the dodecyl hydroxystearic acid is completely melted, then raise the temperature to 130~140°C, and react for 6~8h After obtaining dodecyl hydroxystearate, get 4 ~ 13g propylene pimaric acid, 0.5 ~ 1.2g catalyst, in N 2 Under protected conditions, stir and heat up to 120~140°C, react at constant temperature for 10~14h, and obtain a dark brown sticky substance, which is acrylic pimaric acid grafted polydodecyl hydroxystearate. Weigh 40g of light calcium carbonate, 10g of sword Hemp microcrystals, 3.3-5.5g of propylene pimaric acid grafted polydodecanary hydroxystearate and 60g of polyethylene were stirred evenly, and the polyethylene / calcium carbonate / sisal microcrystal composite material was prepared by injection molding. It has the advantages of abundant raw materials, cheap price, green environmental protection, no pollution, simple process and the like. The method of the invention is rich in raw materials, low in cost, environmentally friendly, simple in process and convenient for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of polymer material modification, and in particular relates to a preparation method of polyethylene / calcium carbonate / sisal fiber microcrystalline composite material. Background technique [0002] In recent years, with the decrease of petrochemical energy and the seriousness of environmental pollution, resource-saving and environment-friendly sustainable green materials have emerged. The preparation of new environment-friendly materials by combining biomass matrix and polymer materials has become a hot research topic at present. Biomass matrix is ​​directly or indirectly obtained from nature and has certain degradability. At the same time, it has the advantages of rich sources, low price, wide application, excellent performance and environmental friendliness. [0003] Sisal, also known as sisal, belongs to the Agaveaceae family. Sisal is a perennial herbaceous plant with high and stable yield. It mainly gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L1/04C08L51/08C08K3/26
CPCC08K2003/265C08L23/06C08L2205/03C08L1/04C08L51/08C08K3/26
Inventor 陆绍荣夏江奇徐旭李裕琪陆天韵杨兴卡卢李勤
Owner GUILIN UNIVERSITY OF TECHNOLOGY