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Powdered rubber isolating agent

A powder rubber and release agent technology, applied in the chemical field, can solve the problems of uneven quality, affecting the performance of the rubber compound, white powder pollution, etc., and achieve the effect of no impact on the performance of the rubber compound, excellent isolation effect, and not easy to precipitate

Inactive Publication Date: 2017-05-31
XIAMEN BAOXIANG PLASTIC MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The imported powdery release agent has a good isolation effect and has little effect on the performance of the rubber compound, but the price is expensive
However, the price of powdered release agents on the domestic market is relatively cheap, but the quality is uneven. There are basically problems such as poor isolation effect, insoluble, foaming, precipitation, slow drying speed, and environmental pollution caused by flying. At the same time, the powder is easy to adhere. On the surface of the film, it will cause white powder pollution. If there are too many attachments, it may also affect the performance of the rubber compound.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The composition of embodiment 1 powder rubber release agent

[0025] The composition of the powder rubber release agent of the present invention is respectively numbered 1-5, as shown in Table 1

[0026] Table 1 Composition of powder rubber release agent

[0027] material name 1 2 3 4 5 Clay 70 80 90 60 100 Nano calcium carbonate 25 15 5 10 5 DP270 1 1 1 1 1 mineral oil 2 2 2 2 2 Zinc stearate 2 2 2 2 2

[0028] Among them, inorganic mineral clay can be replaced by talcum powder, clay, kaolin or mica powder or a combination thereof; defoamer can be replaced by AF-9020, Foamkill 800 Series or 8 Series; fatty acid zinc stearate can be Use sodium stearate instead.

Embodiment 2

[0029] The preparation method of embodiment 2 powder rubber release agent

[0030] After weighing clay, nano-calcium carbonate and zinc stearate, add them to the high-speed mixer at a speed of 1400rpm, and stir for 3 minutes. Then weigh the liquid materials DP270 and mineral oil and add them into the high-speed mixer slowly at a uniform speed. The feeding time of the material is controlled at more than 7 minutes. After the liquid material is added, the stirring is continued for 5 minutes, and the material is discharged to obtain the powdered rubber release agent.

[0031] According to the preparation method of the powder rubber release agent, the number 1-5 powder rubber release agent was prepared according to the components of the number 1-5 in Example 1 respectively.

Embodiment 3

[0032] Embodiment 3 preparation is used for the film of performance test and isolation effect test

[0033] Preparation method of film for performance test and isolation effect test

[0034] 1. Take 50 grams of powdered rubber release agent samples, disperse them in 2000 grams of water, stir them evenly, and make a release agent water solution with a concentration of 2.5%;

[0035] 2. Film preparation: Weigh the following sizing materials in parts by weight: 100 parts of natural rubber (NR); 40 parts of carbon black; 5 parts of softening oil; 5 parts of zinc oxide; 2 parts of stearic acid; 5 parts of antioxidant; 1.5 parts of sulfur parts; accelerator 1.2 parts, knead into a film with a thickness of about 5mm in an open mill.

[0036] 3. The blank film is the film made in the above step 2, and the surface does not contain any release agent;

[0037] The films made in the above step 2 were respectively immersed in the water solution of the release agent No. 1-5 in the embodim...

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PUM

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Abstract

The invention discloses a powdered rubber isolating agent which is prepared from the following raw materials in parts by weight: 50-110 parts of inorganic minerals, 3-30 parts of nanometer calcium carbonate, 0.5-5 parts of a surfactant, 0.5-5 parts of a defoamer and 1-3 parts of fatty acid. The powdered rubber isolating agent is little in foaming, rapid in defoaming and not liable to precipitation, does not have influence on the performance of rubber, is used for airing a film without powder dropping from the surface and has excellent isolation effect on the film.

Description

technical field [0001] The invention belongs to the field of chemistry, in particular to a powder rubber release agent. Background technique [0002] During the production and storage of compound rubber, the extruded film is prone to sticking due to self-adhesiveness and pressure, and film sticking will cause difficulties in processing and transportation of the rubber material. A layer of film release agent to prevent the films from sticking to each other. [0003] At present, the film release agents on the market mainly have four forms: powder, paste, liquid, and suspension. The imported powdery release agent has a good isolation effect and has little effect on the properties of the rubber compound, but it is expensive. However, the price of powdered release agents on the domestic market is relatively cheap, but the quality is uneven. There are basically problems such as poor isolation effect, insoluble, foaming, precipitation, slow drying speed, and environmental polluti...

Claims

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Application Information

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IPC IPC(8): C08J7/06C09D1/00C08L7/00C08L91/00C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06
CPCC08J7/06C08J2307/00C08L7/00C09D1/00C09D7/61C09D7/63C08L91/00C08K13/02C08K3/04C08K2003/2296C08K5/09C08K3/06
Inventor 张启铨刘英儒
Owner XIAMEN BAOXIANG PLASTIC MATERIAL CO LTD
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