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Green environment-friendly concentrated natural latex and preparation method thereof

A natural latex, green and environmentally friendly technology, applied in the field of rubber, can solve problems such as polluting the environment, affecting the working and production environment, and affecting product quality, and achieve the effects of reducing waste water and waste gas emissions, maintaining the inhibition of bacterial flora, and improving overall fluidity

Active Publication Date: 2018-10-23
北京天一瑞博科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because ammonia has a strong pungent smell and is corrosive, it seriously affects the working and production environment, endangers the health of employees, pollutes the environment, and affects product quality at the same time.

Method used

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  • Green environment-friendly concentrated natural latex and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The present embodiment provides a kind of preparation method of green environmental protection type concentrated natural latex, comprises the following steps:

[0036] (1) Collection, storage and transportation of fresh latex: When collecting fresh latex, keep the forest section, tree body and various utensils clean, and add ammonia-free preservative to the collected fresh latex in time, and replenish it as needed during transportation No ammonia preservative, control the pH value of fresh latex ≥ 9;

[0037] (2) Treatment of fresh latex: The fresh latex collected in step (1) is filtered to remove impurities and clots, then add weak alkali salt, and then clarify and settle for 8 to 72 hours to control the alkalinity of fresh latex to 0.06% to 0.1 %, TT / ZnO content≤0.09%, dry rubber content≥22%, volatile fatty acid value≤0.08, free calcium and magnesium content≤5mmol / kg;

[0038] (3) Concentration treatment: The clarified and settled fresh latex obtained in step (2) is ...

Embodiment 2

[0050] This embodiment is a preferred solution based on Embodiment 1. In this example, the amount of each raw material of the ammonia-free preservative is further optimized, and the source and quality of each reagent in this example are the same as those in Example 1.

[0051] The raw material of described ammonia-free preservative comprises sodium bisulfite, sodium tripolyphosphate, sodium carbonate, sodium silicate pentahydrate, citric acid, sodium benzoate, and the weight and number ratio of each raw material is:

[0052] Sodium bisulfite 2—2.5 parts

[0053] Sodium tripolyphosphate 2-4 parts

[0054] Sodium carbonate 1-2 parts

[0055]6-8 parts of sodium silicate pentahydrate

[0056] 2-3 parts of citric acid

[0057] 1-3 parts of sodium benzoate.

Embodiment 3

[0059] This embodiment is a preferred solution based on Embodiment 1. The processing conditions of the preparation method of the green environment-friendly concentrated natural latex described in this example are further refined, and the consumption of each raw material of the described ammonia-free preservative is further optimized. The source and quality of each reagent in this example are the same as those in this example. 1 are the same.

[0060] A kind of preparation method of green environmental protection type concentrated natural latex, comprises the following steps:

[0061] (1) Collection, storage and transportation of fresh latex: when collecting fresh latex, keep the forest section and tree body, rubber knife, rubber cup, rubber tongue, rubber scraper, and rubber collection bucket clean (the "six cleans" of the rubber garden), and Add a 20% ammonia-free preservative solution to the collected fresh latex in time, and if necessary, add an appropriate amount of compo...

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Abstract

The invention discloses green environment-friendly concentrated natural latex and a preparation method thereof. The preparation method includes the steps of: collecting, preserving and transporting fresh latex, processing and concentrating the fresh latex, and performing accumulation treatment. A non-ammonia preservative is employed in the method and includes sodium hydrogen sulfite, sodium tripolyphosphate, sodium carbonate, sodium silicate pentahydrate, citric acid and sodium benzoate; by using the sodium tripolyphosphate instead of butyl p-hydroxybenzoate, bacteria inhibition effect of thenon-ammonia preservative is maintained, and problems that the butyl p-hydroxybenzoate is poor in water solubility and the latex, after long preservation time, is liable to cake can be solved. In addition, by reducing usage amount of sodium carbonate, raw material cost is reduced largely. The green environment-friendly concentrated natural latex can satisfy related quality index requirements in terms of basicity, total solid content, dry latex content, volatile fatty acid number, mechanical stability and the like.

Description

technical field [0001] The invention belongs to the technical field of rubber, in particular to a green and environment-friendly concentrated natural latex and a preparation method thereof. Background technique [0002] Rubber is an important industrial raw material, known as the four major industrial raw materials along with steel, petroleum, and coal. Rubber has a wide range of uses due to its unique high elasticity, good physical and mechanical properties and electrical insulation properties. Therefore, the consumption of rubber is very large. Commonly used rubbers include natural rubber and synthetic rubber. At present, the world's annual demand reaches 20 million tons, including 12 million tons of synthetic rubber and 8 million tons of natural rubber. But synthetic rubber cannot replace natural rubber. my country's natural rubber production accounts for only 7% of the world's total, while its demand accounts for more than 22% of the world's total. [0003] Natural ...

Claims

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Application Information

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IPC IPC(8): C08C1/10C08C1/04C08C1/02C08C1/06
CPCC08C1/02C08C1/04C08C1/06C08C1/10
Inventor 蔡笃坤陆颖吴陵江纪岩
Owner 北京天一瑞博科技发展有限公司
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