Natural rubber with high PO and PRI and preparation method of natural rubber

A technology of natural rubber and natural latex, applied in the field of natural rubber production, can solve the problems of non-rubber components and physical and chemical changes of rubber molecular chains, and achieve the effects of optimizing the processing and production process, the process is simple, and the conditions are easy to control

Inactive Publication Date: 2019-10-25
青岛金瑞纳橡胶科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems existing in the prior art, the present invention provides a natural rubber with high PO and PRI and its preparation method, which solves the problem that the groups on the non-glue components and rubber molecular chains will undergo local physical and chemical changes , to obtain natural rubber with high PO and PRI

Method used

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  • Natural rubber with high PO and PRI and preparation method of natural rubber
  • Natural rubber with high PO and PRI and preparation method of natural rubber
  • Natural rubber with high PO and PRI and preparation method of natural rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of natural rubber with high PO, PRI, comprising:

[0028] Step 1: the preparation of biological antistaling agent: take nano titanium dioxide 3kg in proportion, ethylparaben 5kg, chitosan 39kg, lysozyme 50kg, sodium metabisulfite (sodium pyrosulfite) 3Kg, get antistaling agent after mixing;

[0029] The time from rubber tapping to rubber harvesting is about 4-5 hours. You can put preservative in the rubber harvesting barrel in advance. The general size of the rubber barrel is 20-25 kg. According to the need, you can put about 100-200g of preservative when tapping the rubber ( The seasons are different, see Table 1), when putting latex in rubber barrel, stir, make antistaling agent fully, evenly in latex.

[0030] Step 2: Preparation of heat-resistant oxidant: Weigh the biomass active agent in proportion, add water and grind it with a high-speed refiner for 8-12 minutes to prepare a 14.3% concentration of the biomass active agent aging-resistant slur...

Embodiment 2

[0057] A preparation method of natural rubber with high PO, PRI, comprising:

[0058] Step 1: the preparation of biological antistaling agent: take by weighing nano-titanium dioxide 3kg, ethylparaben 5kg, chitosan 39kg, lysozyme 50kg, sodium metabisulfite (sodium pyrosulfite) 3Kg, add 900kg deionized water, stir into slurry.

[0059] The time from rubber tapping to rubber harvesting is about 4-5 hours. You can put preservative in the rubber harvesting barrel in advance. The general size of the rubber barrel is 20-25 kg. According to the need, you can put about 100-200g of preservative when tapping the rubber ( The seasons are different, see Table 1), when putting latex in rubber barrel, stir, make antistaling agent fully, evenly in latex.

[0060] Step 2: Preparation of heat-resistant oxidant: Weigh the biomass active agent in proportion, add water and grind it with a high-speed refiner for 8-12 minutes to prepare a 14.3% concentration of the biomass active agent aging-resist...

Embodiment 3

[0070] The preparation of the step 2 heat-resistant oxidant is modified to take 2656.25Kg of natural rubber with a dry content of natural rubber milk of 32%, weigh 1048.95Kg of the heat-resistant oxidation bioactive agent slurry prepared with a concentration of 14.3%, and pour the bioactive agent Put it into natural rubber latex and stir it mechanically at high speed for 10-20 minutes, and then solidify. All the other steps are the same as in Example 1.

[0071] The performance test was carried out on the natural rubber prepared in the above embodiment, and the test data was passed according to GB / T8018-2008, and the results are shown in Table 5.

[0072] table 5

[0073]

[0074]

[0075] It can be seen from the above Tables 3-5 that the natural rubber prepared by the present application has a relatively high initial value of plasticity PO and plasticity retention rate, and its other properties are also higher than international standards.

[0076] In summary, this ap...

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Abstract

The invention relates to a natural rubber with high PO and PRI and a preparation method of the natural rubber, and belongs to the technical field of natural rubber production. The natural rubber is prepared from the following raw materials: natural rubber, a biological preservative, a heat resistant oxidizing agent and a biological curing agent. According to the natural rubber and the preparationmethod, a wet mixing method is adopted to prepare the natural rubber, and the natural rubber with high PO and PRI is obtained; quality parameters of the PO and PRI of the natural rubber are improved by directly adding the preservative, a biomass active agent and a curing agent to natural latex, and therefore, the technical standard of the natural rubber surpasses the international level; and the method is simple and convenient in process, the conditions are easy to control, and the processing and production process of the high-performance natural rubber can be optimized.

Description

technical field [0001] The invention relates to the technical field of natural rubber production, in particular to a natural rubber with high PO and PRI and a preparation method thereof. Background technique [0002] Natural rubber is an important strategic resource and basic industrial raw material, directly related to national economy, people's livelihood and national security. my country imports a large amount of natural rubber because of its high quality. China has natural rubber planting areas such as Hainan and Yunnan. Due to the low quality stability of domestic natural rubber, especially the thermal oxidation resistance (PO, PRI) and Mooney viscosity problems. The new rubber tapping leads to the variation of the particle structure and composition of the natural rubber latex synthesized by the rubber tree, which changes the quality of the natural rubber and some physical and chemical performance indicators. Therefore, on the basis of increasing the output rate of na...

Claims

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Application Information

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IPC IPC(8): C08C1/06C08C1/15
CPCC08C1/06C08C1/15
Inventor 张明艳刘瑞强邵立产张淑雅
Owner 青岛金瑞纳橡胶科技有限公司
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