阅读说明：本技术 一种用于提升塑料环保性和鲜艳度的填料的制备方法 (Preparation method of filler for improving environmental protection property and brightness of plastic ) 是由 魏永灵 于 2019-08-30 设计创作，主要内容包括：本发明公开了一种用于提升塑料环保性和鲜艳度的填料的制备方法,包括如下步骤：(1)沸水蒸煮处理、(2)粉碎处理、(3)氧化处理、(4)辐照处理、(5)浸泡改性处理、(6)干燥处理。本发明提供了一种塑料加工用的填料制备方法,本方法能够以现有设备基础的条件下广泛推广应用,制得的填料与塑料基体的相容性好,结合强度高,能够提升塑料的力学品质,提高了塑料的着色鲜艳度和稳定性,同时还能降低塑料的生产成本,使其更环保易降解和回收。(The invention discloses a preparation method of a filler for improving the environmental protection property and the vividness of plastics, which comprises the following steps: (1) boiling water cooking treatment, (2) crushing treatment, (3) oxidation treatment, (4) irradiation treatment, (5) soaking modification treatment, and (6) drying treatment. The invention provides a preparation method of a filler for plastic processing, which can be widely popularized and applied under the condition of the existing equipment foundation, the prepared filler has good compatibility with a plastic matrix and high bonding strength, the mechanical quality of the plastic can be improved, the coloring brightness and stability of the plastic are improved, meanwhile, the production cost of the plastic can be reduced, and the plastic is more environment-friendly and is easy to degrade and recycle.)

1. a preparation method of a filler for improving the environmental protection and the vividness of plastics is characterized by comprising the following steps:

(1) boiling water cooking treatment: putting crop straws into boiling water, heating and cooking for 30-35 min, taking out, washing with clear water, and naturally drying for later use;

(2) and (3) crushing treatment: putting the crop straws treated in the step (1) into a crusher for crushing treatment, and taking out the crushed crop straws for later use;

(3) Oxidation treatment: soaking the crushed material obtained in the step (2) into hydrogen peroxide solution for oxidation treatment for 4-5 h, taking out, washing with deionized water to be neutral, and obtaining an oxidized material for later use;

(4) Irradiation treatment: putting the oxidized material obtained in the step (3) into an irradiation box for irradiation treatment, and taking out the oxidized material after 10-15 min to obtain an irradiated material for later use;

(5) soaking modification treatment: soaking the irradiated material obtained in the step (4) into the solution A for soaking modification treatment, continuously stirring for 1-2 h, filtering, washing with deionized water once, and taking out to obtain a modified material for later use; the solution A comprises the following components in parts by weight: 4-6 parts of mercaptoacetic acid, 5-8 parts of ammonium thiosulfate, 14-16 parts of nano carbon powder, 6-9 parts of chitosan, 7-10 parts of bacterial cellulose, 15-20 parts of titanate coupling agent, 8-12 parts of sodium pyrophosphate, 2-5 parts of sodium dodecyl benzene sulfonate, 25-30 parts of n-butyl alcohol and 260-280 parts of deionized water;

(6) and (3) drying treatment: and (5) putting the modified material obtained in the step (5) into a vacuum drying oven for drying treatment, and taking out after 40-50 min to obtain the finished product filler.

2. the preparation method of the filler for improving the environmental friendliness and vividness of plastics according to claim 1, wherein the crop straw in the step (1) is any one of wheat straw, rice straw and corn straw.

3. the method as claimed in claim 1, wherein the particle diameter of the crushed material after the crushing treatment in step (2) is controlled to be not more than 2 cm.

4. The preparation method of the filler for improving the environmental friendliness and the vividness of the plastic according to claim 1, wherein the mass fraction of hydrogen peroxide in the hydrogen peroxide solution during the oxidation treatment in the step (3) is 2.5-3%, and the pH value of the hydrogen peroxide solution is 10-11.

5. The method for preparing the filler for improving the environmental protection and the vividness of plastics according to claim 1, wherein the irradiation treatment in the step (4) is microwave irradiation treatment, during which the output power in an irradiation box is controlled to be 600-660W, and the inside of the irradiation box is in an oxygen-free environment.

6. the method for preparing the filler for improving the environmental protection and the vividness of plastics according to claim 1, wherein the stirring speed in the stirring treatment in the step (5) is controlled to be 1800-2000 rpm; and heating the solution A during the soaking modification treatment to keep the temperature of the solution A at 55-60 ℃.

7. The method for preparing the filler for improving the environmental friendliness and the vividness of plastics according to claim 1, wherein the vacuum degree in the vacuum drying oven is controlled to be 1-5 Pa during the drying treatment in the step (6), and the drying temperature is controlled to be 80-85 ℃.

Technical Field

the invention belongs to the technical field of plastic processing, and particularly relates to a preparation method of a filler for improving the environmental protection property and the brightness of plastics.

Background

plastic products are a general term for articles for daily life, industry and the like which are processed by adopting plastics as main raw materials, and comprise products of all processes such as injection molding, plastic sucking and the like which take plastics as raw materials, the plastics are synthetic polymer materials with plasticity, and the plastics, synthetic rubber and synthetic fibers form three indispensable synthetic materials in daily life, specifically, the plastics take natural or synthetic resin as main components, various additives are added, the plastics can be molded into a certain shape under the conditions of certain temperature, pressure and the like, the shape is kept unchanged at normal temperature, compared with metal, stone, wood, the plastic products have the advantages of low cost, strong plasticity and the like, the plastic products are widely applied in national economy, the plastic industry occupies an extremely important position in the world at present, and the production of the plastic products develops at high speed in various parts of the world for many years. The plastic product yield of China is always in the front in the world ranking, wherein the yield of various plastic products is already in the first position of the world, and China becomes a world large country for plastic product production. In order to improve the mechanical quality of plastic products, filler components such as calcium carbonate, diatomite and the like are usually added into the plastic products, but the dispersion performance of the fillers in the plastic products is poor, and the interface formed after filling is easy to fall off and separate, so that the overall effect is poor.

Disclosure of Invention

The invention aims to provide a preparation method of a filler for improving the environmental protection property and the vividness of plastics aiming at the existing problems.

the invention is realized by the following technical scheme:

A preparation method of a filler for improving the environmental protection and the vividness of plastics comprises the following steps:

(1) Boiling water cooking treatment: putting crop straws into boiling water, heating and cooking for 30-35 min, taking out, washing with clear water, and naturally drying for later use;

(2) And (3) crushing treatment: putting the crop straws treated in the step (1) into a crusher for crushing treatment, and taking out the crushed crop straws for later use;

(3) Oxidation treatment: soaking the crushed material obtained in the step (2) into hydrogen peroxide solution for oxidation treatment for 4-5 h, taking out, washing with deionized water to be neutral, and obtaining an oxidized material for later use;

(4) irradiation treatment: putting the oxidized material obtained in the step (3) into an irradiation box for irradiation treatment, and taking out the oxidized material after 10-15 min to obtain an irradiated material for later use;

(5) Soaking modification treatment: soaking the irradiated material obtained in the step (4) into the solution A for soaking modification treatment, continuously stirring for 1-2 h, filtering, washing with deionized water once, and taking out to obtain a modified material for later use; the solution A comprises the following components in parts by weight: 4-6 parts of mercaptoacetic acid, 5-8 parts of ammonium thiosulfate, 14-16 parts of nano carbon powder, 6-9 parts of chitosan, 7-10 parts of bacterial cellulose, 15-20 parts of titanate coupling agent, 8-12 parts of sodium pyrophosphate, 2-5 parts of sodium dodecyl benzene sulfonate, 25-30 parts of n-butyl alcohol and 260-280 parts of deionized water;

(6) and (3) drying treatment: and (5) putting the modified material obtained in the step (5) into a vacuum drying oven for drying treatment, and taking out after 40-50 min to obtain the finished product filler.

Further, the crop straw in the step (1) is any one of wheat straw, rice straw and corn straw.

Further, the particle diameter of the crushed material is controlled to be not more than 2cm after the crushing treatment in the step (2).

Further, the mass fraction of hydrogen peroxide in the hydrogen peroxide solution during the oxidation treatment in the step (3) is 2.5-3%, and the pH value of the hydrogen peroxide solution is 10-11.

Further, the irradiation treatment in the step (4) is microwave irradiation treatment, during which the output power in the irradiation box is controlled to be 600-660W, and the inside of the irradiation box is in an oxygen-free environment.

further, the rotating speed of stirring is controlled to be 1800-2000 rpm during the stirring treatment in the step (5); and heating the solution A during the soaking modification treatment to keep the temperature of the solution A at 55-60 ℃.

Further, the vacuum degree in the vacuum drying oven is controlled to be 1-5 Pa during the drying treatment in the step (6), and the drying temperature is controlled to be 80-85 ℃.

in order to enhance the service performance of plastic products, the invention specially prepares a filler component for filling, the main raw material of the filler component is biomass straw, the source of the filler component is wide, the price of the filler component is low, the production cost of the plastic can be effectively reduced, and the degradation and recovery performance of the plastic is improved. The filler is prepared by boiling water, decomposing and removing colloid, phenols and other components in the straw by continuous boiling of the boiling water, effectively loosening the fiber structure, enlarging fiber gaps, then crushing, thinning the fiber particle length, facilitating subsequent filling and use, then carrying out oxidation treatment, soaking by alkaline hydrogen peroxide solution, removing lignin in the straw fiber, promoting the exposure of cellulose and the change of a crystal structure, carrying out solubilization modification on macromolecular hemicellulose, further improving the binding capacity of the straw fiber and a plastic matrix raw material, then carrying out irradiation treatment, irradiating by utilizing the high-energy action of microwaves, improving the types and the quantity of active groups on the surface of the fiber, and improving the dispersion binding capacity of the straw fiber, meanwhile, the specific surface area and the adsorption property of the fiber can be improved, finally, soaking modification treatment is carried out, soaking treatment is carried out by utilizing the solution A, the bonding strength of the fiber and a plastic macromolecular chain can be improved by utilizing a sulfur-containing group, added nano carbon powder can be filled and fixed in fiber pores, the adsorption property of the fiber is further improved, and the enhancement of the fiber strength and the stability is facilitated, the addition of chitosan, bacterial cellulose and a titanate coupling agent can form a film on the surface part of the wood fiber, the bonding capability of the fiber is improved, the bonding strength between the finally treated filler and a plastic matrix is high, and the fixing of the colorant particles can be effectively captured, the dyeing brightness and the stability are improved, and the comprehensive performance of the plastic is improved.

Compared with the prior art, the invention has the following advantages:

the invention provides a method for preparing a filler for plastic processing, which can be widely popularized and applied under the condition of the existing equipment foundation, the prepared filler has good compatibility with a plastic matrix and high bonding strength, the mechanical quality of the plastic can be improved, the coloring brightness and stability of the plastic are improved, meanwhile, the production cost of the plastic can be reduced, the plastic is more environment-friendly and is easy to degrade and recycle, and the practical value is high.

Detailed Description