Biomass composite material with high hydrophobicity and preparation method thereof
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A composite material and high hydrophobicity technology, applied in the field of composite materials, can solve problems such as cracking, deformation, and affecting material performance
Inactive Publication Date: 2017-10-10
HUANGSHAN HUASU NEW MATERIAL SCI & TECH CO LTD
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Problems solved by technology
[0004] Ordinary biomass composite materials have high hygroscopicity. After the material absorbs water, it is easy to cause its deformation, internal hollowing or surface cracking, which will affect the performance of the material.
Method used
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Embodiment 1
[0069] A kind of biomass composite material with high hydrophobicity, its raw material is composed of by weight:
[0070]
[0071] The plastic particles are PE particles with a molecular weight of 130,000;
[0072] Toughening agent is maleic anhydride grafted ethylene-vinyl acetate copolymer;
[0073] The antioxidant is antioxidant 1010;
[0074] The lubricant is polyethylene wax.
[0075] Concrete preparation is carried out according to the following steps:
[0076] A. Raise the temperature of modified wood flour, plastic particles, hydrophobic nano-calcium carbonate and other raw materials to 140°C, mix them well and discharge them into the cold mixing machine, then cool them down to 70°C and discharge them to make a special premix.
[0077] B. The above-mentioned special premix is added to a parallel twin-screw extruder to extrude and granulate; the process conditions are: the barrel temperature is 150-190°C, and the screw speed is 200-300rpm;
[0078] C, putting t...
Embodiment 2
[0081] A kind of biomass composite material with high hydrophobicity, its raw material is composed of by weight:
[0082]
[0083] The plastic particles are PE particles with a molecular weight of 100,000;
[0084] The toughening agent is solid polysulfide rubber;
[0085] The antioxidant is antioxidant 1010;
[0086] The lubricant is polyethylene wax.
[0087] Prepare according to the preparation method of the embodiment.
Embodiment 3
[0089] A kind of biomass composite material with high hydrophobicity, its raw material is composed of by weight:
[0090]
[0091] The plastic particles are HDPE particles with a molecular weight of 130,000;
[0092] Toughening agent is maleic anhydride grafted ethylene-vinyl acetate copolymer;
[0093] The antioxidant is antioxidant 1010;
[0094] The lubricant is solid chlorinated paraffin 70.
[0095] Prepare according to the preparation method of the embodiment.
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Abstract
A biomass composite material with high hydrophobicity and a preparation method thereof, the biomass composite material uses nano-calcium carbonate containing modified wood powder, plastic particles, toughening agent, compatibilizer, coupling agent, and hydrophobic filler The modified wood powder is first dehydrated and etherified by poly(dimethylsiloxane), trimethylsilanol and wood powder in a solvent, and then the hydroxyl groups on the surface of the wood powder are esterified Made by modified reaction. The biomass composite material provided by the invention has super-hydrophobicity, and when in contact with water, the stable contact angle of the surface is greater than 140°, water droplets cannot be immersed in the biomass composite board, the water absorption is extremely low, and the boiling resistance is excellent, so it can be used outdoors It has the advantages of anti-pollution and low water absorption, which greatly prolongs the service life of biomass composite materials outdoors.
Description
technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a biomass composite material with high hydrophobicity and a preparation method thereof. Background technique [0002] With the depletion of global resources and the increasing awareness of social environmental protection, higher requirements are placed on the application of wood and petrochemical products. In this context, biomass composite materials have become green and environmentally friendly new materials that are gradually being promoted and applied in many countries in the world today. For example, wood-plastic composite material is a kind of composite material composed of low-value biomass fibers such as sawdust, wood chips, bamboo chips, rice husks, wheat straw, soybean hulls, peanut shells, bagasse, and cotton straw as the main raw materials and plastics. It has the advantages of plant fiber and plastic at the same time, and has a wide range of ...
Claims
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Application Information
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