阅读说明：本技术 一种改性橡胶助剂及其制备工艺 (Modified rubber additive and preparation process thereof ) 是由 陆建 于 2019-11-28 设计创作，主要内容包括：本发明涉及橡胶助剂制备技术领域,公开了一种改性橡胶助剂,包括如下组分：丙烯酸锌、分散助剂、交联剂、白炭黑、稀土化合物和增塑剂,由如下重量份的组分制备而得：丙烯酸锌50～90份、分散助剂5～25份、交联剂20～40份、白炭黑50～130份、稀土化合物20-40份、增塑剂10～30份。本发明通过稀土化合物对白炭黑的改性,能够有效解决橡胶厚制品由于传热差等缺陷造成橡胶厚制品的早期脱层和爆破易报废的问题,而将各种原料倒入反应釜中进行反应,并在反应过程中通过搅拌轴对原料进行搅拌,使白炭黑在混合的过程中不会存在挤压现象,防止白炭黑的微观物理结构受到破坏,保证了白炭黑改性后的使用效果。(The invention relates to the technical field of rubber auxiliary preparation, and discloses a modified rubber auxiliary which comprises the following components: the zinc acrylate, the dispersing auxiliary agent, the cross-linking agent, the white carbon black, the rare earth compound and the plasticizer are prepared from the following components in parts by weight: 50-90 parts of zinc acrylate, 5-25 parts of dispersing aid, 20-40 parts of cross-linking agent, 50-130 parts of white carbon black, 20-40 parts of rare earth compound and 10-30 parts of plasticizer. According to the invention, the rare earth compound is used for modifying the white carbon black, so that the problems of early delamination and easy scrapping of a thick rubber product due to the defects of poor heat transfer and the like of the thick rubber product can be effectively solved, various raw materials are poured into the reaction kettle for reaction, and the raw materials are stirred by the stirring shaft in the reaction process, so that the white carbon black is not extruded in the mixing process, the micro physical structure of the white carbon black is prevented from being damaged, and the use effect of the modified white carbon black is ensured.)

1. The modified rubber additive is characterized by comprising the following components: the zinc acrylate, the dispersing auxiliary agent, the cross-linking agent, the white carbon black, the rare earth compound and the plasticizer are prepared from the following components in parts by weight: 50-90 parts of zinc acrylate, 5-25 parts of dispersing aid, 20-40 parts of cross-linking agent, 50-130 parts of white carbon black, 20-40 parts of rare earth compound and 10-30 parts of plasticizer.

2. The modified rubber additive as claimed in claim 1, which is prepared from the following components in parts by weight: 60 parts of zinc acrylate, 10 parts of dispersing auxiliary agent, 20 parts of cross-linking agent, 80 parts of white carbon black, 25 parts of rare earth compound and 15 parts of plasticizer.

3. The modified rubber additive as claimed in claim 1, which is prepared from the following components in parts by weight: 80 parts of zinc acrylate, 20 parts of dispersing auxiliary agent, 30 parts of cross-linking agent, 110 parts of white carbon black, 35 parts of rare earth compound and 25 parts of plasticizer.

4. The modified rubber additive as defined in claim 1, wherein the plasticizer is one of a benzene polyacid ester, a benzoate, a polyol ester, a chlorinated hydrocarbon, an epoxy, and a citrate.

5. The modified rubber additive of claim 1, wherein the rare earth compound is composed of a first rare earth composition and a second rare earth composition, and the weight ratio of the first rare earth composition to the second rare earth composition is 15: 10.

6. The modified rubber additive as claimed in claim 1, wherein the dispersing aid is any two of modified alkyd resin, polyester resin, magnesium carbonate and polyacrylic acid.

7. The modified rubber additive and the preparation process thereof as claimed in claims 1 to 6, wherein the preparation method comprises the following steps: weighing zinc acrylate, white carbon black, a rare earth compound and a plasticizer according to the weight parts, pouring the weighed zinc acrylate, white carbon black, rare earth compound and plasticizer into a reaction kettle in sequence for reaction, continuously stirring through a stirring shaft in the reaction process, adding a dispersing aid and a cross-linking agent in sequence after zinc acrylate powder is fluffy in the stirring process, continuously stirring until all components are uniformly mixed, and carrying out modification reaction on the mixture in a liquid phase state to obtain the modified rubber aid.

8. The modified rubber additive and the preparation process thereof as claimed in claim 7, wherein the rotation speed of the stirring shaft is adjusted to 400-600 r/min during the stirring process, the dispersion time is 5-10 min, and the modified rubber additive is heated during the dispersion process, wherein the heating temperature is controlled to be 60-80 ℃.

9. The modified rubber additive and the preparation process thereof as claimed in claim 7, wherein the modification reaction temperature is 120-160 ℃, the modification reaction time is 8-20 min, and the liquid phase state is provided by one or two of ethanol, isopropanol and n-butanol.

Technical Field

The invention relates to the technical field of rubber auxiliary preparation, in particular to a modified rubber auxiliary and a preparation process thereof.

Background

The rubber auxiliary agent is caused to be vulcanized by natural rubber, and through research of more than eighty years, the rubber auxiliary agent basically forms a system until 20-30 years in the 20 th century, along with industrialization of a basic variety 2-mercaptobenzothiazole and a secondary sulfonamide derivative of a vulcanization accelerator and a p-phenylenediamine anti-aging agent, at present, the rubber auxiliary agent is in a stable period, the yield of two main organic auxiliary agents of the vulcanization accelerator and the anti-aging agent is about 4 percent of the raw rubber consumption amount, the production of foreign rubber auxiliary agents is quite centralized, Bayer companies in Federal Germany and Monsanto companies in America are the most main manufacturers, and the production of Chinese rubber auxiliary agents (referred to as organic auxiliary agents) starts in 1952.

However, the rubber auxiliary agent prepared by the existing preparation process has large heat generation and poor heat transfer, so that the problems of delamination, blasting, scrapping and the like easily occur in the early stage of a thick rubber product, and the normal use is influenced. Therefore, the modified rubber additive and the preparation process thereof are provided by the technical personnel in the field, so as to solve the problems in the background technology.

Disclosure of Invention

The invention aims to provide a modified rubber additive and a preparation process thereof, which aim to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the modified rubber additive comprises the following components: the zinc acrylate, the dispersing auxiliary agent, the cross-linking agent, the white carbon black, the rare earth compound and the plasticizer are prepared from the following components in parts by weight: 50-90 parts of zinc acrylate, 5-25 parts of dispersing aid, 20-40 parts of cross-linking agent, 50-130 parts of white carbon black, 20-40 parts of rare earth compound and 10-30 parts of plasticizer.

As a still further scheme of the invention: the adhesive is prepared from the following components in parts by weight: 60 parts of zinc acrylate, 10 parts of dispersing auxiliary agent, 20 parts of cross-linking agent, 80 parts of white carbon black, 25 parts of rare earth compound and 15 parts of plasticizer.

As a still further scheme of the invention: the adhesive is prepared from the following components in parts by weight: 80 parts of zinc acrylate, 20 parts of dispersing auxiliary agent, 30 parts of cross-linking agent, 110 parts of white carbon black, 35 parts of rare earth compound and 25 parts of plasticizer.

As a still further scheme of the invention: the plasticizer is one of benzene polyacid esters, benzoic acid esters, polyol esters, chlorinated hydrocarbons, epoxy and citric acid esters.

As a still further scheme of the invention: the rare earth compound consists of a first rare earth composition and a second rare earth composition, and the weight ratio of the first rare earth composition to the second rare earth composition is 15: 10.

As a still further scheme of the invention: the dispersing auxiliary agent is any two of modified alkyd resin, polyester resin, magnesium carbonate and polyacrylic acid.

As a still further scheme of the invention: the preparation method comprises the following steps: weighing zinc acrylate, white carbon black, a rare earth compound and a plasticizer according to the weight parts, pouring the weighed zinc acrylate, white carbon black, rare earth compound and plasticizer into a reaction kettle in sequence for reaction, continuously stirring through a stirring shaft in the reaction process, adding a dispersing aid and a cross-linking agent in sequence after zinc acrylate powder is fluffy in the stirring process, continuously stirring until all components are uniformly mixed, and carrying out modification reaction on the mixture in a liquid phase state to obtain the modified rubber aid.

As a still further scheme of the invention: in the stirring process, the rotating speed of the stirring shaft is adjusted to 400-600 r/min, the dispersion time is 5-10 min, and the stirring shaft is heated in the dispersion process, wherein the heating temperature is controlled to be 60-80 ℃.

As a still further scheme of the invention: the modification reaction temperature is 120-160 ℃, the modification reaction time is 8-20 min, and the liquid phase state is provided by one or any two of ethanol, isopropanol and n-butanol.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the rare earth compound is used for modifying the white carbon black, so that the problems of early delamination and easy scrapping of a thick rubber product due to the defects of poor heat transfer and the like of the thick rubber product can be effectively solved, various raw materials are poured into the reaction kettle for reaction, and the raw materials are stirred by the stirring shaft in the reaction process, so that the white carbon black is not extruded in the mixing process, the micro physical structure of the white carbon black is prevented from being damaged, the use effect of the modified white carbon black is ensured, and meanwhile, the process is low in manufacturing cost, has good reinforcing performance and has wide market prospect.

Detailed Description

In the embodiment of the invention, the modified rubber additive comprises the following components: the zinc acrylate, the dispersing auxiliary agent, the cross-linking agent, the white carbon black, the rare earth compound and the plasticizer are prepared from the following components in parts by weight: 50-90 parts of zinc acrylate, 5-25 parts of dispersing aid, 20-40 parts of cross-linking agent, 50-130 parts of white carbon black, 20-40 parts of rare earth compound and 10-30 parts of plasticizer.

Preferably: the adhesive is prepared from the following components in parts by weight: 60 parts of zinc acrylate, 10 parts of dispersing auxiliary agent, 20 parts of cross-linking agent, 80 parts of white carbon black, 25 parts of rare earth compound and 15 parts of plasticizer.

Preferably: the adhesive is prepared from the following components in parts by weight: 80 parts of zinc acrylate, 20 parts of dispersing auxiliary agent, 30 parts of cross-linking agent, 110 parts of white carbon black, 35 parts of rare earth compound and 25 parts of plasticizer.

Preferably: the plasticizer is one of benzene polyacid esters, benzoic esters, polyol esters, chlorinated hydrocarbons, epoxies and citric acid esters.

Preferably: the rare earth compound is composed of a first rare earth composition and a second rare earth composition, and the weight ratio of the first rare earth composition to the second rare earth composition is 15: 10.

Preferably: the dispersing assistant is any two of modified alkyd resin, polyester resin, magnesium carbonate and polyacrylic acid.

Preferably: the preparation method comprises the following steps: weighing zinc acrylate, white carbon black, a rare earth compound and a plasticizer according to the weight parts, pouring the weighed zinc acrylate, white carbon black, rare earth compound and plasticizer into a reaction kettle in sequence for reaction, continuously stirring through a stirring shaft in the reaction process, adding a dispersing aid and a cross-linking agent in sequence after zinc acrylate powder is fluffy in the stirring process, continuously stirring until all components are uniformly mixed, and carrying out modification reaction on the mixture in a liquid phase state to obtain the modified rubber aid.

Preferably: in the stirring process, the rotating speed of the stirring shaft is adjusted to 400-600 r/min, the dispersion time is 5-10 min, and the stirring shaft is heated in the dispersion process, wherein the heating temperature is controlled to be 60-80 ℃.

Preferably: the modification reaction temperature is 120-160 ℃, the modification reaction time is 8-20 min, and the liquid phase state is provided by one or two of ethanol, isopropanol and n-butanol.