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Method for preparing coupling agent for wood-plastic composites

A wood-plastic composite material and coupling agent technology, which is applied in the fields of chemical production and material preparation, can solve the problems of poor compatibility between wood powder and resin, poor performance of wood-plastic composite materials, etc., achieve low price and improve interface bonding force , the effect of low production cost

Inactive Publication Date: 2013-10-30
启仲化工(广西)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since wood powder fiber contains a large amount of hydroxyl groups, it is a polar substance, while most thermoplastics are non-polar substances. The polarity difference between the two is large, resulting in poor compatibility between wood powder and resin, which results in poor performance of wood-plastic composites. not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Under nitrogen protection, dissolve 7.2 grams of acrylic acid, 20 grams of polyethylene glycol PEG-200 and 0.5 grams of catalyst stannous chloride in 100 milliliters of toluene, and add In a 500 ml three-necked flask with a condenser tube, the temperature was raised to 120° C., and the reaction was carried out at constant temperature for 5 hours to obtain an intermediate product.

[0019] (2) Weigh 30 grams of rosin and add it to the intermediate product prepared in step (1). Under nitrogen protection, raise the temperature to 120°C, react at constant temperature for 4 hours, lower the temperature to 80°C, and gradually add 10.4 grams of styrene, and slowly add 0.5 grams of initiator benzoyl peroxide dropwise, react at a constant temperature of 80 ° C for 5 hours, and then distill under reduced pressure to obtain a light brown fat, which is the wood-plastic composite prepared by the present invention. Coupling agent for materials.

[0020] When the coupling agent p...

Embodiment 2

[0022] (1) Under nitrogen protection, dissolve 7.2 grams of acrylic acid, 40 grams of polyethylene glycol PEG-400 and 0.6 grams of catalyst stannous chloride in 150 milliliters of toluene, add In a 500 ml three-necked flask with a condenser tube, the temperature was raised to 125° C., and the reaction was carried out at a constant temperature for 6 hours to obtain an intermediate product.

[0023] (2) Weigh 30 grams of rosin and add it to the intermediate product prepared in step (1). Under the protection of nitrogen, raise the temperature to 125°C, react at constant temperature for 4 hours, lower the temperature to 80°C, and gradually add 10.4 grams of styrene, and slowly add 0.5 grams of initiator benzoyl peroxide dropwise, react at a constant temperature of 80 ° C for 5 hours, and then distill under reduced pressure to obtain a light brown fat, which is the wood-plastic composite prepared by the present invention. Coupling agent for materials.

[0024] When the coupling ag...

Embodiment 3

[0026] (1) Under nitrogen protection, dissolve 7.2 grams of acrylic acid, 60 grams of polyethylene glycol PEG-600 and 0.7 grams of catalyst stannous chloride in 200 milliliters of toluene, and add In a 500 ml three-necked flask with a condenser tube, the temperature was raised to 130° C., and the reaction was carried out at constant temperature for 6 hours to obtain an intermediate product.

[0027] (2) Weigh 30 grams of rosin and add it to the intermediate product prepared in step (1). Under nitrogen protection, raise the temperature to 130°C, react at constant temperature for 4 hours, lower the temperature to 80°C, and gradually add 10.4 grams of styrene, and slowly add 0.5 grams of initiator benzoyl peroxide dropwise, react at a constant temperature of 80 ° C for 5 hours, and then distill under reduced pressure to obtain a light brown fat, which is the wood-plastic composite prepared by the present invention. Coupling agent for materials.

[0028] When the coupling agent p...

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PUM

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Abstract

The invention discloses a method for preparing a coupling agent for wood-plastic composites. Under the protection of nitrogen, crylic acid, polyethylene glycol and a catalyst stannous chloride are dissolved in toluene together and perform reaction at the constant temperature of 100-140 DEG C for 3-7 hours so as to produce an intermediate product. Rosin is added into the intermediate product to perform reaction for 2-5 hours under the constant reaction conditions, the temperature is reduced to be 50-100 DEG C, styrene is gradually added into a reaction container, an initiator benzoyl peroxide is slowly added in a droplet mode to perform the reaction at the constant temperature of 50-100 DEG C for 2-5 hours, and then reduced pressure distillation is performed to obtain light brown lipid substance, namely the coupling agent for the wood-plastic composites. The rosin is an industrial first-grade product, and other chemical reagents have purity higher than chemical pure. The method is low in cost and simple in reaction, and the coupling agent can improve compatibility between wood meal and thermoplastic resin and accordingly enables the mechanical property of the composites to be improved.

Description

technical field [0001] The technical field of the invention belongs to the fields of chemical production and material preparation, and in particular relates to a preparation method of a coupling agent for wood-plastic composite materials. Background technique [0002] China's wood-plastic industry began in the late 1990s, and now the vigorous development of the wood-plastic industry is due to the support of the concept of circular economy and the vigorous implementation of national environmental protection and resource conservation policies. Wood-plastic composite materials have five major characteristics: raw material diversification, material plasticization, product environmental protection, application economy and recycling. The characteristics of this sustainable biomass material are in line with the low-carbon and environmental protection advocated by modern people. , Energy-saving material requirements. Wood-plastic composite materials are widely used in building mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/06C08F220/06C08F212/08C08L23/06C08L97/02C08L51/08
Inventor 李善荣陆绍荣罗崇禧徐旭凌日华
Owner 启仲化工(广西)有限公司