60-degree natural rubber and production process thereof

A technology of natural rubber and production process, which is applied in the field of 60-degree natural rubber and its production process, and can solve the problem of high production cost

CN102504353AInactive Publication Date: 2012-06-20北京市长城机床附件有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2012-06-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a 60-degree natural rubber and a production process of the 60-degree natural rubber. The raw materials of the 60-degree natural rubber comprise 48%-65% of raw natural rubber, 1%-2.5% of vulcanizator, 5%-21% of high wear-resistant furnace black, 8%-28% of spraying carbon black, 5.5%-17% of active agent, 0.1%-0.6% of accelerator, 0.55%-3.2% of anti-aging agent and 0.5%-3% of plasticizer, and the natural rubber is produced by processes of plasifying and mixing. The 60-degree natural rubber has the advantages of good ageing resistance, good elongation at rupture, excellent wear resistance, good rebound value, good load compression amount and natural frequency; meanwhile, the rubber is low in production cost.
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Description

technical field

[0001] The present invention relates to a kind of natural rubber and its production process, specifically, the present invention relates to a kind of 60 degree natural rubber and its production process. Background technique

[0002] Natural rubber is a natural polymer compound with polyisoprene as the main component, and its molecular formula is (C 5 h 8 )n, 91% to 94% of its components are rubber hydrocarbons (polyisoprene), and the rest are non-rubber substances such as proteins, fatty acids, ash, and sugars. Natural rubber is the most widely used general-purpose rubber.

[0003] Natural rubber has high elasticity at room temperature, slightly plastic, has very good mechanical strength, low hysteresis loss, and low heat generation during multiple deformations, so its flex resistance is also very good, and because it is non-polar Rubber, so the electrical insulation performance is good.

[0004] Because of unsaturated double bonds, natural rubber is a su...

Examples

Embodiment 1

[0108] Prepare 60 degree natural rubber of the present invention according to the following steps:

[0109] (1) Rubber drying: put 56.1g of natural raw rubber in an oven at 60°C, and bake the rubber for 4 hours;

[0110] (2) Gum breaking: The natural raw rubber after drying is immediately broken. The roller distance is 0.5mm when the glue is broken;

[0111] (3) First mastication: Divide the natural raw rubber into 3 equal parts, each weighing 18.7 kg. The roller distance is 0.5mm, and it is required to roll and turn 90° for the next plasticizing. Roll over 12 times continuously;

[0112] (4) After parking for 4 hours, carry out the second mastication. The second plasticizing roller distance is adjusted to 0.5mm, coiled and turned 90 ° for the next plasticizing, and the rollers are passed continuously for 12 times. After parking for 4 hours, enter the mixing process;

[0113] (5) Mixing: put the masticated raw rubber into the open mill, and wrap it with rolls. After wrap...

Embodiment 2

[0117] Prepare 60 degree natural rubber of the present invention according to the following steps:

[0118] (1) Rubber drying: put 63.2g of natural raw rubber at 70°C, and bake the rubber for 3 hours;

[0119] (2) Gum breaking: The natural raw rubber after drying is immediately broken. The roller distance is 0.3mm when the rubber is broken;

[0120] (3) First mastication: Divide the natural raw rubber into 4 equal parts, each weighing about 15.8kg. The roller distance is 0.3mm, and it is required to roll and turn 90° for the next plasticizing. Roll over 18 times continuously;

[0121] (4) After parking for 5 hours, carry out the second mastication. The second plasticizing roll distance is adjusted to 0.3mm, coiled and turned 90° for the next plasticizing, and the rollers are passed continuously for 18 times. After parking for 5 hours, enter the mixing process;

[0122] (5) Mixing: put the masticated raw rubber into the open mill, and wrap it with rolls. After wrapping th...

Embodiment 3

[0124] Prepare 60 degree natural rubber of the present invention according to the following steps:

[0125] (1) Rubber drying: put 52.85g of natural raw rubber at 30°C, and bake the rubber for 5 hours;

[0126] (2) Gum breaking: The natural raw rubber after drying is immediately broken. The roller distance is 0.9mm when the glue is broken;

[0127] (3) First mastication: Divide the raw natural rubber into 3 equal parts, each weighing 17.62 kg. The roller distance is 0.9mm, and it is required to roll and turn 90° for the next plasticizing. Roll over 10 times continuously;

[0128] (4) After parking for 4 hours, carry out the second mastication. The second plasticizing roller distance is adjusted to 0.9mm, coiled and turned 90 ° for the next plasticizing, and the rollers are passed continuously for 10 times. After parking for 4 hours, enter the mixing process;

[0129] (5) Mixing: Put the masticated raw rubber into the open mill to make it covered with rolls. After complet...