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Basalt long-fibre-reinforced wood-plastic sectional material and preparation method thereof

A technology of basalt and long fibers, applied in the field of materials, can solve the problems of not giving full play to the advantages of high strength of basalt long fibers, and achieve the effect of improving mechanical properties and good compatibility

Active Publication Date: 2014-10-01
NANJING XUHUA SUNDI NEW BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Basalt fiber can also be used to strengthen wood-plastic materials. After the basalt fiber is treated with a silane coupling agent, it is granulated and extruded with ordinary wood-plastic raw materials. The length of basalt fiber is generally less than 1mm, its strength is greatly improved compared with ordinary wood-plastic, the bending strength is as high as 60-75MPa, the bending elastic modulus is as high as 4500-5000MPa, and the impact strength is as high as 15-18kJ / m 2 , but this does not give full play to the high strength advantages of basalt long fibers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] S1. Surface modified basalt long fiber: Mix 20 parts of titanate, 20 parts of silane coupling agent, 40 parts of epoxy acrylic resin and 20 parts of triglycidyl isocyanurate to make a modifier and put it in a solvent In the tank, the basalt long roll fiber with a diameter of 5 microns is passed through the solvent tank at a speed of 1m / min, and the fiber is immersed in the modifier, and the four components in the modifier all react with the hydroxyl groups on the surface of the basalt long fiber , and then at a speed of 1m / min, the fiber is dried into rolls through a microwave oven at a drying temperature of 75°C; the modified basalt long fiber has good compatibility with wood-plastic materials, so it can be successfully applied to Enhance the mechanical properties of wood-plastic materials;

[0019] S2, granulation: 49 parts of wood fiber, 40 parts of waste plastic PE, 5 parts of maleic anhydride grafted PE compatibilizer, and 6 parts of lubricant stearic acid are mixe...

Embodiment 2

[0022] Embodiment 2 is roughly the same as Embodiment 1, except that the component content and process parameters are different, as follows.

[0023] S1. Surface modified basalt long fiber: Mix 40 parts of titanate, 30 parts of silane coupling agent, 20 parts of epoxy acrylic resin and 30 parts of triglycidyl isocyanurate to make a modifier and put it in a solvent In the tank, the basalt long roll fiber with a diameter of 30 microns is passed through the solvent tank at a speed of 2m / min, and the fiber is immersed in the modifier, and the four components in the modifier all react with the hydroxyl groups on the surface of the basalt long fiber , and then at a speed of 3m / min, the fiber is dried into rolls through a microwave oven at a drying temperature of 60°C;

[0024] S2. Granulation: 60 parts of wood fiber, 30 parts of waste plastic PP, 3 parts of maleic anhydride grafted PE compatibilizer, and 3 parts of lubricant are mixed and granulated;

[0025] S3. Extrusion: Add the...

Embodiment 3

[0027] Embodiment 3 is roughly the same as Embodiment 1, except that the component content and process parameters are different, as follows.

[0028] S1. Surface modified basalt long fiber: Mix 10 parts of titanate, 40 parts of silane coupling agent, 30 parts of epoxy acrylic resin and 40 parts of triglycidyl isocyanurate to make a modifier and put it in a solvent In the tank, the basalt long roll fiber with a diameter of 20 microns is passed through the solvent tank at a speed of 2m / min, and the fiber is immersed in the modifier, and the four components in the modifier all react with the hydroxyl groups on the surface of the basalt long fiber , and then at a speed of 2m / min, the fiber is dried into rolls through a microwave oven at a drying temperature of 70°C;

[0029] S2. Granulation: 40 parts of wood fiber, 35 parts of waste plastic PP, 4 parts of maleic anhydride grafted PE compatibilizer, and 5 parts of lubricant are mixed and granulated;

[0030] S3. Extrusion: Add the...

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Abstract

The invention discloses a basalt long-fibre-reinforced wood-plastic sectional material and a preparation method thereof. The preparation method comprises three steps, including surface modification for basalt long fibres, granulation and extrusion, wherein the basalt long fibres subjected to the surface modification treatment are used for reinforcing a wood-plastic material, the compatibility is good, the basalt long fibres are inserted in the holes in a third area and a fourth area respectively; when passing through the third area, lots of fibres are sheared into middle and short fibres with the lengths of 3-10mm; when passing through the fourth area, the shearing force acting on the long fibres is small, and the fibres are generally 10-20mm long; in this way, the basalt fibres with the lengths of 3-20mm are distributed in the wood-plastic sectional material, and in combination with reasonable section of each component in parts by weight, such mechanical properties of the final product as bending strength, bending elastic modulus and impact-resistant strength are remarkably improved.

Description

technical field [0001] The invention relates to a wood-plastic material, in particular to a basalt long fiber reinforced wood-plastic and a preparation method thereof, belonging to the field of materials. Background technique [0002] Basalt fiber (Basalt Fiber, referred to as BF) is a new type of high-performance fiber made of natural basalt ore through platinum-rhodium alloy drawing after high-temperature melting. In recent years, with the birth of global low-energy production devices, its cost-effective advantages have gradually become prominent. come out. Basalt fiber has a wide source of raw materials, low cost, and has excellent properties such as high temperature resistance, corrosion resistance, heat insulation, sound absorption and low moisture absorption. It is considered to be a new high-strength fiber that is expected to replace expensive carbon fiber. Reinforcement and many other fields. [0003] Basalt fiber can also be used to strengthen wood-plastic materia...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L23/06C08L23/12C08K9/06C08K9/04C08K7/10C08J5/06B29C47/00
Inventor 许世华何军李靖戴东花严永刚陈龙
Owner NANJING XUHUA SUNDI NEW BUILDING MATERIALS
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