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Calcium carbonate composite degradation plastic and method of producing the same

A technology for degrading plastics and calcium carbonate, which is applied in the field of degrading plastics, can solve the problems of high cost, high production cost, rising price of starch raw materials, etc., and achieve the effects of reducing the amount of resin, simplifying the production process, and improving production efficiency

Inactive Publication Date: 2010-10-27
潍坊海诺石塑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages of starch-based materials: 1. Due to its super water absorption, the molding performance is not good. 2. Due to the increase in the price of starch raw materials, the production cost is high
3. The transparency and performance of starch-based degradable plastics are lower than ordinary plastics. It is necessary to add degradable masterbatches to achieve the purpose of degradation, resulting in complex processes and difficult control of degradation time.
[0005] The preparation process of photodegradable plastic film or biodegradable plastic film is to add photodegradable masterbatch or biodegradable masterbatch to polyethylene resin, mix and stir, and then blow the film, resulting in complicated production process and high cost. Degradation time is difficult to control, etc.
The content of added calcium carbonate is between 5-15%. Its disadvantages: 1. The content of calcium carbonate cannot be increased, resulting in high prices of finished products. 2. Due to the limitations of its process, the added calcium carbonate is scattered The property is not good, so that the surface finish of the product is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Mix 8 parts of titanate coupling agent and 8 parts of liquid paraffin evenly, and set aside;

[0026] (2) Put 70 parts of calcium carbonate with a mesh number of 2000 mesh into a high-speed mixer, control the temperature at 110° C., and control the speed at 400 rpm, and mix and stir for 2 minutes;

[0027] (3) Add the mixture prepared in step (1), its addition amount: the amount added for the first time is 1 / 3 of the total amount, react for 2 minutes; the amount added for the second time is 1 / 3 of the total amount, react for 2 minutes Minutes; the amount added for the third time is 1 / 3 of the total amount, after 2 minutes of reaction, the rotating speed is controlled at 800rpm, and the mixing and stirring are carried out for 10 minutes;

[0028] (4) Add 5 parts of ethylene bis stearamide, 2 parts of antioxidant, 5 parts of polyethylene wax respectively again, and the rotating speed is controlled at 800rpm, mixes and stirs for 5 minutes;

[0029] (5) Add 18 parts of...

Embodiment 2

[0035] (1) Mix 4 parts of titanate coupling agent and 4 parts of liquid paraffin, and set aside;

[0036] (2) Put 50 parts of calcium carbonate with a mesh number of 1000 mesh into a high-speed mixer, control the temperature at 130° C., and control the speed at 300 rpm, and mix and stir for 2 minutes;

[0037] (3) Add the mixture prepared in step (1), its addition amount: the amount added for the first time is 1 / 3 of the total amount, react for 2 minutes; the amount added for the second time is 1 / 3 of the total amount, react for 2 minutes Minutes; the amount added for the third time is 1 / 3 of the total amount, after 2 minutes of reaction, the rotating speed is controlled at 750rpm, and the mixing and stirring are carried out for 10 minutes;

[0038] (4) Add 1 part of ethylene bis stearamide, 1 part of antioxidant, and 1 part of polyethylene wax respectively, and the rotating speed is controlled at 700 rpm, and mixed and stirred for 5 minutes;

[0039] (5) Then add 30 parts of...

Embodiment 3

[0045] (1) Mix 6 parts of titanate coupling agent and 6 parts of liquid paraffin evenly, and set aside;

[0046] (2) Put 58 parts of calcium carbonate with a mesh number of 1200 mesh into a high-speed mixer, control the temperature at 120° C., and control the rotating speed at 320 rpm, and mix and stir for 2 minutes;

[0047] (3) Add the mixture prepared in step (1), its addition amount: the amount added for the first time is 1 / 3 of the total amount, react for 2 minutes; the amount added for the second time is 1 / 3 of the total amount, react for 2 minutes Minutes; the amount added for the third time is 1 / 3 of the total amount, after 2 minutes of reaction, the rotating speed is controlled at 750rpm, and the mixing and stirring are carried out for 10 minutes;

[0048] (4) Add 4 parts of ethylene bis stearamide, 2 parts of antioxidant, and 2 parts of polyethylene wax respectively, and the rotating speed is controlled at 740 rpm, and mixed and stirred for 5 minutes;

[0049](5) Ad...

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Abstract

The invention relates to a CaCO3 compound degradable plastic and a preparation method thereof. The method comprises the following steps: cheap CaCO3 is adopted as the main material, thus reducing the dosage of polyethylene. The degradable plastic puller prepared by the invention can be directly molded by injection, extrusion or blowing without adding any additive so as to prepare the degradable plastic products. The preparation method has the advantages of simple production technology, low cost, high efficiency and controllable degradation time.

Description

technical field [0001] The invention belongs to the technical field of degradable plastics, and in particular relates to a calcium carbonate composite degradable plastic and a preparation method thereof. Background technique [0002] With the development of science and technology, the amount of plastic products is also increasing, but the following problems still restrict the development: [0003] (1) The problem of environmental pollution is becoming more and more serious. (2) Affected by the international crude oil market, the raw material of plastic (synthetic resin) - petroleum resources are increasingly scarce, resulting in high prices for synthetic resin. (3) Newly developed processes and products It belongs to the same type, and many requirements of some plastic products currently in use can no longer meet the requirements of the improvement of people's living standards for product quality. At present, the plastic industry mainly advocates: eliminate the harm caused ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08K13/02C08K3/26C08K5/098B29B9/02B29B7/28B29B7/88B29C47/92B29C48/40B29C48/92
CPCB29C48/40
Inventor 张锋
Owner 潍坊海诺石塑科技有限公司
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