Wood plastic composite material with anti-bacterial function and preparation method

Abstract

The invention relates to a wood plastic composite material with an anti-bacterial function. The wood plastic composite material is characterized in that raw materials for preparing the wood plastic composite material comprise the following components in parts by weight: 15-40 parts of wheat and rice straw, 1-15 parts of sweet wormwood and 1-3 parts of sweet wormwood extract. The wood plastic composite material has the traditional characteristics of high strength, high elasticity, high toughness, fatigue resistance and the like, has the advantages of being anti-bacterial and mould-proof and enhancing aroma without additionally adding a chemical antibacterial agent and an aroma enhancer, can well meet the needs of places having bacteriostatic requirements, such as hospitals and kindergartens, meanwhile is good for increasing the needs of the market on the raw materials of the sweet wormwood, the wheat and rice straw and the like, and promotes the comprehensive utilization of agricultural straw.

Description

technical field

[0001] The invention belongs to the field of wood-plastic materials, and in particular relates to a wood-plastic composite material with antibacterial function and a preparation method thereof. Background technique

[0002] Straw is the general term for the stems and leaves (ears) of mature crops, and usually refers to the remaining parts of wheat, rice, corn, potatoes, rapeseed, cotton, sugar cane and other crops after harvesting seeds. More than half of the photosynthetic products of crops exist in straw, which is rich in nitrogen, phosphorus, potassium, calcium, magnesium and organic matter, etc. It is a multi-purpose renewable biological resource, and the crude fiber content in straw is as high as 30%. ~40%, and contains lignin etc.

[0003] In 2012, the amount of straw that could be collected in my country was 790 million tons, and the comprehensive utilization rate was 74.1%. The remaining 25.9% straw was discarded or burned, which not only wastes reso...

Examples

Embodiment 1

[0028] 150 g of rice and wheat straw and 150 g of Artemisia annua are mixed and crushed into 80-mesh plant fiber for later use, and Artemisia annua adopts the mixture of Artemisia annua straw and side branches of Artemisia annua. The plant fibers composed of rice straw and Artemisia annua were evenly sprayed with 100g of commercially available compatibilizer, added 20g of Artemisia annua extract and stirred at high speed for 5min, placed in a blast oven, activated at 120°C for 2h, and dried at 80°C for 12h after activation. Add 580g of polypropylene, knead at 135-145°C for 30 minutes, mix evenly, and release the pellets. The sheet was dried at 80°C for 12 hours, preheated at 152°C for 3 minutes before pressing and forming, then hot-pressed at 2.5 MPa for 5 minutes, then cooled to 40°C and cold-pressed for 4 minutes to form a wood with antibacterial function. plastic composites.

Embodiment 2

[0030] The production method is the same as that in Example 1, and the ratio of each component is 300g of rice straw, 10g of Artemisia annua straw, 20g of Artemisia annua extract, 70g of compatibilizer, and 600g of polypropylene.

Embodiment 3

[0032] The production method is the same as that in Example 1, and the ratio of each component is 400g of rice and wheat straw, 100g of Artemisia annua straw, 20g of Artemisia annua extract, 80g of compatibilizer, and 400g of polypropylene.

technical field

[0001] The invention belongs to the field of wood-plastic materials, and in particular relates to a wood-plastic composite material with antibacterial function and a preparation method thereof. Background technique

[0002] Straw is the general term for the stems and leaves (ears) of mature crops, and usually refers to the remaining parts of wheat, rice, corn, potatoes, rapeseed, cotton, sugar cane and other crops after harvesting seeds. More than half of the photosynthetic products of crops exist in straw, which is rich in nitrogen, phosphorus, potassium, calcium, magnesium and organic matter, etc. It is a multi-purpose renewable biological resource, and the crude fiber content in straw is as high as 30%. ~40%, and contains lignin etc.

[0003] In 2012, the amount of straw that could be collected in my country was 790 million tons, and the comprehensive utilization rate was 74.1%. The remaining 25.9% straw was discarded or burned, which not only wastes reso...

Examples

Embodiment 1

[0028] 150 g of rice and wheat straw and 150 g of Artemisia annua are mixed and crushed into 80-mesh plant fiber for later use, and Artemisia annua adopts the mixture of Artemisia annua straw and side branches of Artemisia annua. The plant fibers composed of rice straw and Artemisia annua were evenly sprayed with 100g of commercially available compatibilizer, added 20g of Artemisia annua extract and stirred at high speed for 5min, placed in a blast oven, activated at 120°C for 2h, and dried at 80°C for 12h after activation. Add 580g of polypropylene, knead at 135-145°C for 30 minutes, mix evenly, and release the pellets. The sheet was dried at 80°C for 12 hours, preheated at 152°C for 3 minutes before pressing and forming, then hot-pressed at 2.5 MPa for 5 minutes, then cooled to 40°C and cold-pressed for 4 minutes to form a wood with antibacterial function. plastic composites.

Embodiment 2

[0030] The production method is the same as that in Example 1, and the ratio of each component is 300g of rice straw, 10g of Artemisia annua straw, 20g of Artemisia annua extract, 70g of compatibilizer, and 600g of polypropylene.

Embodiment 3

[0032] The production method is the same as that in Example 1, and the ratio of each component is 400g of rice and wheat straw, 100g of Artemisia annua straw, 20g of Artemisia annua extract, 80g of compatibilizer, and 400g of polypropylene.