Method for fiber-reinforced modified wood-plastic decorative plate

Abstract

The invention discloses a method for fiber-reinforced modified wood-plastic decorative plates, the method comprises the following steps: dispersing a silane coupling agent in an ethanol solution, soaking aramid fiber therein, washing with deionized water, and drying in an oven to obtain silane coupling agent modified ammonium polyphosphate; adding organically modified zirconium phosphate and n-butylamine into deionized water, oscillating in a water bath, adding carboxymethyl chitosan, stirring at constant temperature under microwave, washing with deionized water and ethanol, centrifuging, anddrying under vacuum to obtain modified zirconium phosphate; drying regenerated high density polyethylene, putting into a mixer for mixing and melting, adding an antioxidant, silane coupling agent modified ammonium polyphosphate, the silane coupling agent modified ammonium polyphosphate and the modified zirconium phosphate, finally adding modified wood flour for uniform mixing, paving in a mold, putting into a hot press for preheating, starting hot pressing, and then putting into a cold press for cold pressing to prepare the wood- plastic decorative plate.

Description

technical field

[0001] The invention belongs to the field of plastic product processing, and in particular relates to a method for fiber-reinforced modified wood-plastic decorative boards. Background technique

[0002] Due to the lack of forest resources in our country, the ineffective use of windproof and sand-fixing shrubs, and the serious pollution of waste plastics, it is urged to use the organic combination of wood flour and plastics to prepare wood-plastic composite materials. Wood-plastic composite materials are due to their excellent moisture resistance, decay resistance, With unique appearance, environmental friendliness and recyclability, it is widely used in construction, outdoor decoration, transportation and other fields.

[0003] However, wood-plastic composites have problems such as low strength, poor toughness, and creep. The commonly used methods for wood-plastic reinforcement and toughening mainly include modifying the plastic matrix, adding reinforcements,...

Examples

Embodiment 1

[0028] A method for fiber-reinforced modified wood-plastic decorative boards, characterized in that it comprises the following steps, and the following raw materials are calculated in parts by weight:

[0029] (1) Preparation of modified aramid fiber:

[0030] Disperse 0.05 part of silane coupling agent in ethanol solution at a volume ratio of 1:500, soak 1 part of aramid fiber in it for 1 hour, wash it with deionized water for 3 times, and dry it in an oven at 60°C for 3 hours to obtain the coupling agent Modified aramid fiber;

[0031] Wherein, the silane coupling agent is KH550, and the ethanol solution concentration is 90%;

[0032] (2) Preparation of modified zirconium phosphate:

[0033] Add 3 parts of organically modified zirconium phosphate and 0.72 parts of n-butylamine to 300 parts of deionized water, shake in a water bath at 50°C for 4 hours, add 2 parts of carboxymethyl chitosan, and stir at a constant temperature under 800W microwave for 2 hours , washed three ...

Embodiment 2

[0041] A method for fiber-reinforced modified wood-plastic decorative boards, characterized in that it comprises the following steps, and the following raw materials are calculated in parts by weight:

[0042] (1) Preparation of modified aramid fiber:

[0043] Disperse 0.1 part of silane coupling agent in ethanol solution at a volume ratio of 1:500, soak 2 parts of aramid fiber in it for 2 hours, wash it with deionized water for 5 times, and dry it in an oven at 65°C for 2 hours to obtain the coupling agent Modified aramid fiber;

[0044]Wherein, the silane coupling agent is KH550, and the ethanol solution concentration is 95%;

[0045] (2) Preparation of modified zirconium phosphate:

[0046] Add 4 parts of organically modified zirconium phosphate and 0.96 parts of n-butylamine to 400 parts of deionized water, shake in a water bath at 60°C for 3 hours, add 3 parts of carboxymethyl chitosan, and stir at a constant temperature under 800W microwave for 2 hours , washed five t...

technical field

[0001] The invention belongs to the field of plastic product processing, and in particular relates to a method for fiber-reinforced modified wood-plastic decorative boards. Background technique

[0002] Due to the lack of forest resources in our country, the ineffective use of windproof and sand-fixing shrubs, and the serious pollution of waste plastics, it is urged to use the organic combination of wood flour and plastics to prepare wood-plastic composite materials. Wood-plastic composite materials are due to their excellent moisture resistance, decay resistance, With unique appearance, environmental friendliness and recyclability, it is widely used in construction, outdoor decoration, transportation and other fields.

[0003] However, wood-plastic composites have problems such as low strength, poor toughness, and creep. The commonly used methods for wood-plastic reinforcement and toughening mainly include modifying the plastic matrix, adding reinforcements,...

Examples

Embodiment 1

[0028] A method for fiber-reinforced modified wood-plastic decorative boards, characterized in that it comprises the following steps, and the following raw materials are calculated in parts by weight:

[0029] (1) Preparation of modified aramid fiber:

[0030] Disperse 0.05 part of silane coupling agent in ethanol solution at a volume ratio of 1:500, soak 1 part of aramid fiber in it for 1 hour, wash it with deionized water for 3 times, and dry it in an oven at 60°C for 3 hours to obtain the coupling agent Modified aramid fiber;

[0031] Wherein, the silane coupling agent is KH550, and the ethanol solution concentration is 90%;

[0032] (2) Preparation of modified zirconium phosphate:

[0033] Add 3 parts of organically modified zirconium phosphate and 0.72 parts of n-butylamine to 300 parts of deionized water, shake in a water bath at 50°C for 4 hours, add 2 parts of carboxymethyl chitosan, and stir at a constant temperature under 800W microwave for 2 hours , washed three ...

Embodiment 2

[0041] A method for fiber-reinforced modified wood-plastic decorative boards, characterized in that it comprises the following steps, and the following raw materials are calculated in parts by weight:

[0042] (1) Preparation of modified aramid fiber:

[0043] Disperse 0.1 part of silane coupling agent in ethanol solution at a volume ratio of 1:500, soak 2 parts of aramid fiber in it for 2 hours, wash it with deionized water for 5 times, and dry it in an oven at 65°C for 2 hours to obtain the coupling agent Modified aramid fiber;

[0044]Wherein, the silane coupling agent is KH550, and the ethanol solution concentration is 95%;

[0045] (2) Preparation of modified zirconium phosphate:

[0046] Add 4 parts of organically modified zirconium phosphate and 0.96 parts of n-butylamine to 400 parts of deionized water, shake in a water bath at 60°C for 3 hours, add 3 parts of carboxymethyl chitosan, and stir at a constant temperature under 800W microwave for 2 hours , washed five t...

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