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Environment-friendly composite plastic and preparation method thereof

A composite plastic, environmentally friendly technology, applied in the field of environmental protection, can solve the problems of insignificant modification effect and reduced performance, and achieve the effect of improving performance in all aspects, improving performance, and improving thermodynamic performance.

Inactive Publication Date: 2019-03-22
深圳市欧科力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The high-performance modification of plastics has always been a very active research topic in the field of polymer materials. In the past, the toughening modification of rubber and elastomers and the filling modification of inorganic fillers were used more frequently. These modification methods have great impact on the toughness and Rigidity or other performances have the disadvantage of taking care of one and losing another, and it is difficult to satisfy the toughness, rigidity, heat resistance, flame retardancy, etc. of plastics at the same time; adding a single inorganic nanoparticle, although a certain aspect of performance improved, but it often leads to the reduction of other aspects of performance, so the effect of modification is not obvious

Method used

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  • Environment-friendly composite plastic and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0035] Preparation of Modified Zeolite Powder

[0036] Add 1 kg of zeolite to a ball mill for grinding and crushing, soak in 5% nitric acid for 5 hours, filter, wash until neutral, dry, and then put it into a muffle furnace for gradient calcination. The specific calcination steps are: (a) at 400 ° C (b) heat up to 800°C at a heating rate of 15°C / min, and keep calcination at this temperature for 50 minutes; (c) heat up to 1000°C at a heating rate of 5°C / min, and Calcining at lower temperature for 30 minutes, after the calcination, naturally cool to room temperature, grind and sieve to obtain the activated zeolite powder, the particle size of the activated zeolite powder is 7-85nm.

Embodiment 2

[0038] Preparation of modified calcium carbonate

[0039]Weigh 1kg of calcium carbonate and add it to the reaction flask, add 5L of solvent ethanol, heat to 75°C, and stir under reflux for 30min. After the calcium carbonate is completely dispersed into a suspension, add 90g of stearic acid drop by drop. After the addition is complete, Continue stirring for 1 hour, filter, vacuum-dry at 45°C for 10 hours, and grind for later use.

Embodiment 3

[0041] An environment-friendly composite plastic, the parts by weight of each raw material are: 200 parts of high-density polyethylene, 24 parts of straw powder, 6 parts of modified zeolite powder, 8 parts of modified calcium carbonate, 4 parts of coupling agent, and 5 parts of plasticizer 3 parts, heat stabilizer 3 parts, compatibilizer 2 parts;

[0042] The coupling agent is a titanate coupling agent;

[0043] Described plasticizer is butyl benzyl phthalate;

[0044] Described thermal stabilizer is zinc stearate;

[0045] The compatibilizer is polyethylene glycol;

[0046] A preparation method of an environment-friendly composite plastic, specifically comprising the following steps:

[0047] S1, the pretreatment of rice straw powder: after rice straw is air-dried, pulverize into powder with pulverizer, pass 20 mesh sieves, put into blast drying box and dry at 100 ℃ for 5h, the moisture content of the rice straw powder after drying is 1.1%;

[0048] S2. Wood-plastic compo...

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Abstract

The invention discloses environment-friendly composite plastic and a preparation method thereof. The environment-friendly composite plastic is prepared from the following raw materials in parts by weight: 200 parts of high-density polyethylene, 24 to 32 parts of straw powder, 3 to 6 parts of modified zeolite powder, 8 to 12 parts of modified calcium carbonate, 1 to 5 parts of coupling agent, 5 to10 parts of plasticizer, 2 to 6 parts of thermal stabilizer, and 1 to 3 parts of compatibilizer. The preparation method of the environment-friendly composite plastic comprises the following steps: S1,drying straw in the air, smashing the dried straw into powder with a smashing machine, screening the powder, and drying the powder for later use; S2, smelting, extruding and granulating the pretreated straw powder together with the coupling agent and the high-density polyethylene; S3, smelting, extruding and granulating the modified calcium carbonate, modified zeolite powder and high-density polyethylene; S4, uniformly mixing wood-plastic composite plastic particles, inorganic composite plastic particles, the rest of high-density polyethylene and an additive, extruding and granulating the mixture to obtain the environment-friendly composite plastic. The quaternary composite material has comprehensive performance, is recyclable, can be machined and used repeatedly, and is environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to an environment-friendly composite plastic and a preparation method thereof. Background technique [0002] With the rapid development of the national economy and the extensive application of plastic resources, "white pollution" has attracted more and more attention from the state, and the recycling of waste plastics has been put on the agenda. In addition, it is also raised on the basis of a series of problems such as the waste of rice straw resources in our country and the fires caused by rice straw burning that have caused huge economic losses, casualties, and environmental pollution to the country. [0003] The high-performance modification of plastics has always been a very active research topic in the field of polymer materials. In the past, the toughening modification of rubber and elastomers and the filling modification of inorganic fillers were...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L97/02C08L71/02C08K13/06C08K9/02C08K7/26C08K9/04C08K3/26C08K5/12
CPCC08K2003/265C08L23/06C08L2205/03C08L2207/062C08L97/02C08L71/02C08K13/06C08K9/02C08K7/26C08K9/04C08K3/26C08K5/12
Inventor 不公告发明人
Owner 深圳市欧科力科技有限公司
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