Natural rubber latex biological coagulant, preparation method and preparation method of environment-friendly rubber thereof

A natural rubber and coagulant technology, which is applied in the field of rubber production, can solve the problems of ecological environment damage, increase the demand for land area, and the decline of rubber quality, and achieve the effects of simple preparation method, increased output rate, and fast curing of latex

Inactive Publication Date: 2020-05-12
青岛金瑞纳橡胶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the rubber molecules that are easy to oxidize will reduce the quality of the rubber, which will destroy the appearance and color of the rubber, and cause serious brown spots.
The effective curing time is about 10 hours, and a large-volume solidification tank is required, which increases the land area requirement; the discharge of wastewater containing ammonia and formic acid increases the pressure of sewage treatment
Sulfuric acid can also be used, but its damage to the ecological environment is more serious than formic acid

Method used

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  • Natural rubber latex biological coagulant, preparation method and preparation method of environment-friendly rubber thereof
  • Natural rubber latex biological coagulant, preparation method and preparation method of environment-friendly rubber thereof
  • Natural rubber latex biological coagulant, preparation method and preparation method of environment-friendly rubber thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take by weighing wild red 10kg, red bayberry 36Kg, after cleaning, pulverize with pulverizer, filter to remove fruit core afterwards. Put the filtered pulp into a multi-functional vacuum concentration device at 5-10°C for concentration to obtain concentrated solids. Distill and purify the concentrated solid matter with an extractor for 5 times, each distillation time is 4 hours, and then filter the extract after standing still for 24 hours to obtain extract A;

[0032] Pick crabapple fruit with good quality, weigh 28Kg, remove the stem and core after cleaning, and then grind into pulp. Adding pectinase to the pulp for enzymolysis at a temperature of 45° C. for 4 hours, and then filtering to obtain crabapple juice. The crabapple juice extractor was distilled and purified to obtain extract B, and the pH of the extract was controlled at 3.

[0033] The above-mentioned extract A and extract B were mixed and allowed to settle for 24 hours, and the supernatant was sieved th...

Embodiment 2

[0036] Take wild red 12kg, red bayberry 36Kg, after cleaning, pulverize with pulverizer, filter to remove fruit core afterwards. Put the filtered pulp into a multi-functional vacuum concentration device at 5-10°C for concentration to obtain concentrated solids. Distill and purify the concentrated solid 8 times with an extractor, each distillation time is 5h, and filter the extract after standing still for 24h to obtain extract A;

[0037] Pick crabapple fruit with good quality, weigh 26.5Kg, remove the stem and core after cleaning, and then grind into pulp. Adding pectinase to the pulp for enzymolysis at a temperature of 45°C for 5 hours, and then filtering to obtain crabapple juice. The crabapple juice extractor was distilled and purified to obtain extract B, and the pH of the extract was controlled at 3.

[0038] The above-mentioned extract A and extract B were mixed and allowed to settle for 24 hours, and the supernatant was sieved three times with a standard sieve with a...

Embodiment 3

[0041] Take wild red 11kg, red bayberry 35.5Kg, wash and pulverize with a pulverizer, and filter to remove the core afterwards. Put the filtered pulp into a multi-functional vacuum concentration device at 5-10°C for concentration to obtain concentrated solids. Distill and purify the concentrated solid matter with an extractor for 10 times, each distillation time is 5 hours, let the extract stand still for 24 hours, and then filter to obtain extract A;

[0042] Pick crabapple fruit with good quality, weigh 27.5Kg, remove the stem and core after cleaning, and then grind into pulp. Adding pectinase to the fruit pulp for enzymolysis, the enzymolysis temperature is 45° C., the time is 8 hours, and then filtered to obtain crabapple juice. The crabapple juice extractor was distilled and purified to obtain extract B, and the pH of the extract was controlled at 3.

[0043] The above-mentioned extract A and extract B were mixed and allowed to settle for 24 hours, and the supernatant w...

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Abstract

The invention puts forward a natural rubber latex biological coagulant, a preparation method and a preparation method of environment-friendly rubber. The natural rubber latex biological coagulant is prepared from the following raw materials: 10.0%-12.0% of wild large-fruited Chinese hawthorn, 35.0%-38.0% of waxberries, 26.5%-30.0% of plum-leaf crab, 7.5%-9.0% of rosin pentaerythritol ester, 13.5%-14.5% of sodium hydrogen sulfite and 3.5%-5.5% of sodium metabisulfite. The biological coagulant provided by the invention can replace the history of curing natural rubber latex by formic acid for more than 100 years. The biological coagulant has no irritation or side effect, is harmless to human bodies and does not pollute the ecological environment. The quality of the natural rubber latex can beobviously improved, the latex can be cured quickly, and the weight of natural rubber dry glue can be increased.

Description

technical field [0001] The invention belongs to the technical field of rubber production, and in particular relates to a natural rubber latex biological coagulant and a preparation method thereof and a production process of environment-friendly rubber. Background technique [0002] For nearly a hundred years, the problem of natural rubber processing has always been the anti-coagulation and coagulation acceleration of natural rubber latex. The general measure to prevent natural rubber latex from corruption, deterioration, and solidification is to add ammonia, formaldehyde or sodium sulfite to the latex, and the amount of addition is determined according to the length of time the latex needs to remain liquid. The most commonly used preservative for concentrated latex is also ammonia. Ammonia can be used alone or in combination with second preservatives such as sodium pentachlorophenate, boric acid, and zinc diethylsulfamate. Acid coagulation, usually formic acid, is usually r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08C1/15C08L7/00
CPCC08C1/15C08L7/00
Inventor 张明艳刘瑞强徐如原
Owner 青岛金瑞纳橡胶科技有限公司
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