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Plastic defoamer

A defoamer and plastic technology, applied in the field of plastic defoamer, can solve the problems of reduced performance of plastic products and strict storage conditions, and achieve the effect of improving performance, avoiding failure, and improving self-protection function.

Active Publication Date: 2013-04-24
ZHEJIANG JIANDE HONGXING CALCIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a plastic defoamer to solve the problem that the performance of plastic products is reduced due to the difficulty in eliminating the moisture in the plastic raw materials during the production of plastics, and the existing plastic defoaming masterbatch has stricter storage conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Mix 20kg of calcium oxide powder with a particle size of ≤200 mesh and 16kg of a mixture of linear low density polyethylene and styrene-butadiene rubber at a weight ratio of 1:1, 10kg of butyl stearate, 2.5kg of polymethyl acrylate, and 3kg of stearic acid Zinc and 1.5 kg of titanate coupling agent were mixed, kneaded at 110°C for 20 minutes, and then extruded and granulated by a twin-screw extruder to prepare a plastic defoamer.

Embodiment 2

[0017] 25kg of calcium oxide powder with a particle size of ≤200 mesh, 12kg of a mixture of linear low-density polyethylene and styrene-butadiene rubber with a weight ratio of 1:1, 5kg of ethylene bisstearamide, 4kg of polymethyl acrylate, and 2kg of stearic acid The barium and 3 kg of titanate coupling agent were mixed, kneaded at 150° C. for 20 minutes, and then extruded and granulated by a twin-screw extruder to prepare a plastic defoamer.

Embodiment 3

[0019] 23kg of calcium oxide powder with a particle size of ≤200 mesh, 15kg of a mixture of linear low-density polyethylene and styrene-butadiene rubber with a weight ratio of 1:1, 8kg of oxidized polyethylene wax, 5kg of polymethyl acrylate, and 4.5kg of calcium stearate Mix with 0.5 kg titanate coupling agent, knead at 120° C. for 20 minutes, and then extrude and granulate with a twin-screw extruder to prepare a plastic defoamer.

[0020] By placing the prepared plastic defoamer in the air and weighing it at different times, see Table 1 for details.

[0021] Table 1

[0022] time in air Example 1 Example 2 Example 3 1h 100% 100% 100% 2h 100% 100% 100% 5h 100% 100% 100% 10h 100% 100% 100% 24h 100% 100% 100% 10d 100.3% 100.5% 100.3%

[0023] By adding the plastic defoamer prepared by each embodiment of the present invention to plastics such as PVC, PP, PS and ABS, compared with the plastic product without adding pl...

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PUM

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Abstract

The invention relates to the field of plastic processing, and in particular relates to a plastic defoamer. The plastic defoamer is prepared from the following components in parts by weight: 40 to 50 parts of calcium oxide, 30 to 40 parts of linear low density polyethylene and butadiene styrene rubber totally, 10 to 20 parts of lubricants, 5 to 10 parts of polymethyl acrylate, 4 to 9 parts of metal soaps and 1 to 3 parts of titanate coupling agents. According to the invention, the plastic defoamer is coated by polymethyl acrylate to insulate contact of the plastic defoamer and air to prevent absorption of moisture, so as to improve the safe applicability of the plastic defoamer; simultaneously, the coupling agent is used for lowering the influence of calcium oxide on plastic properties and an effect of removing residual moisture in the plastic on the basis of not affecting plastic basic properties is achieved.

Description

technical field [0001] The invention relates to the field of plastic processing, in particular to a plastic defoamer. Background technique [0002] The application of plastics in the manufacturing industry is ubiquitous at this stage. There are all kinds of plastic products. The application of plastics is not only diverse, but also in a wide range of fields. However, there is a common problem in the process of plastic applications. Due to The plastic masterbatch contains moisture. During the secondary processing of the plastic, due to the increase in temperature, the moisture in the plastic vaporizes rapidly at high temperature, but the moisture is wrapped by the molten plastic melt, and the moisture cannot escape, resulting in Moisture stays in the plastic or on the surface to form many holes and bubbles. Such holes and bubbles will not only affect the appearance of the final product, but also lead to a significant decrease in the mechanical properties of plastic products, ...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L9/06C08L33/08C08K3/22C08K5/098C08K13/02
Inventor 周建红
Owner ZHEJIANG JIANDE HONGXING CALCIUM
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