Lubricant for wood-plastic composites as well as preparation method and application lubricant
A wood-plastic composite material and lubricant technology, applied in the field of wood-plastic composite materials, can solve the problems of WPC extrusion processing difficulties, unstable flow, poor product quality, etc., achieve excellent processing lubrication, improve mechanical properties, and simple method Effect
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Example Embodiment
[0030] Example 1: Preparation of lubricant for wood-plastic composite materials
[0031] (1) Preparation of higher fatty alcohol: add 90g vegetable oil and 10g copper-chromium catalyst to the autoclave, install and seal, heat to 320°C, hydrogen gas for hydrocracking under 8MPa condition, and heat preservation reaction for 5 hours. After the reaction, the oil layer is separated, washed with water, dried, distilled under reduced pressure, and centrifuged to obtain the supernatant to obtain the product higher fatty alcohol.
[0032] (2) Preparation of lubricant for wood-plastic composite materials: 40g of higher fatty alcohol, 25g of paraffin wax, 20g of maleic anhydride and 5g of calcium carbonate prepared above were added to a closed reaction kettle, mixed and stirred, heated to 120°C, added high 10g molecular dispersant (PAA), mixed and reacted for 4 hours under the protection of nitrogen, and cooled to room temperature to obtain a lubricant for wood-plastic composite materials.
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Example Embodiment
[0034] Example 2: Preparation of lubricants for wood-plastic composite materials
[0035] (1) The preparation of higher fatty alcohol is the same as in Example 1.
[0036] (2) Preparation of lubricant for wood-plastic composite materials: 80g of higher fatty alcohol, 5g of paraffin wax, 10g of PE-g-MA and 3g of calcium carbonate prepared above were added to a closed reaction vessel and mixed and stirred, and the temperature was raised to 150°C, Add 2 g of polymer dispersant (PAA), mix and react for 6 hours under the protection of nitrogen, and cool to room temperature to obtain a special lubricant for wood-plastic composite materials.
[0037] (3) Effect: The lubricant for wood-plastic composite materials is applied to PVC wood-plastic composite materials, and the additive amount is 3wt%. The surface of the obtained product is smooth and delicate, the tensile strength is increased by 30%, and the bending strength is increased. 27%.
Example Embodiment
[0038] Example 3: Preparation of lubricant for wood-plastic composite materials
[0039] (1) The preparation of higher fatty alcohol is the same as in Example 1.
[0040] (2) Preparation of lubricant for wood-plastic composite materials: add 50g of higher fatty alcohol, 7g of paraffin wax, 30g of PP-g-MA and 9g of calcium carbonate prepared above into a closed reaction kettle, mixing and stirring, and heating to 200°C, Add 4 g of polymer dispersant (PAA), mix and react for 8 hours under the protection of nitrogen, and cool to room temperature to obtain a special lubricant for wood-plastic composite materials.
[0041] (3) Effect: The lubricant for wood-plastic composite materials is applied to PVC wood-plastic composite materials, the additive amount is 3wt%, the surface of the obtained product is smoother, the tensile strength is increased by 27%, and the bending strength is increased by 25%. %.
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