A Method for Reinforcing Wood Flour/Polyolefin Composites Using Surface-Treated Continuous Aramid Fibers

A technology of aramid fibers and composite materials, which is applied in the field of reinforced wood powder/polyolefin composite materials, can solve the problems of high cost, poor bonding strength of fibers and wood-plastic matrix interfaces, and affecting the strength of the surface structure of aramid fibers, and achieves Improve the interface bonding strength and improve the effect of surface polarity
CN112322064BActive Publication Date: 2021-09-28NORTHEAST FORESTRY UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHEAST FORESTRY UNIVERSITY
Publication Date
2021-09-28

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Abstract

The invention discloses a method for reinforcing wood powder / polyolefin composite material with surface-treated continuous aramid fibers, which relates to a method for reinforcing wood powder / polyolefin composite material. The purpose of the present invention is to solve the problem that the existing fiber-reinforced wood-plastic composite materials have poor bonding strength between the fiber and the wood-plastic matrix interface, but the existing fiber modification method is expensive and may affect the surface structure of the aramid fiber to reduce its A question of self-strength. Preparation method: 1. pretreatment; 2. dopamine-coated continuous aramid fiber bundle; 3. dopamine-VTES synergistic treatment of continuous aramid fiber bundle; 4. preparation of continuous aramid fiber reinforced wood flour / polyolefin composite material. The invention relates to a continuous aramid fiber reinforced wood powder / polyolefin composite material for surface treatment.
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Description

technical field

[0001] The invention relates to a method for strengthening wood flour / polyolefin composite materials. Background technique

[0002] Wood-plastic composites (WPCs) are high-value-added composite materials composed of thermoplastics as the matrix and wood fibers as the reinforcing phase. Due to its environmental friendliness, adjustability, and easy processing, it is widely used in interior decoration, infrastructure, building materials and other fields. In the actual production of WPCs, coupling agents / compatibilizers (maleic anhydride grafted polyolefins, silane coupling agents, etc.) are often added to improve the interfacial bonding between non-polar plastic matrix and polar wood fibers. The prepared WPCs have effectively improved mechanical properties due to the enhanced stress transfer efficiency. Nevertheless, due to the limited strength of the plastic matrix itself and the high addition of wood fiber, traditional WPCs are still difficult to apply to s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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