Water swellable rubber and production method thereof

A technology of water-swellable rubber and production method, applied in the field of water-swellable rubber, can solve the problems of backward processing technology, low work efficiency and low output, and achieve the effects of fewer processing steps, high work efficiency and high output

Active Publication Date: 2011-05-25
上海长宁橡胶制品厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At the same time, the current domestic production of water-swellable rubber products is produced and processed by a flat vulcanizing machine, one die after another, by intermittent molding, which is backward in processing technology, low in output and low in efficiency

Method used

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  • Water swellable rubber and production method thereof
  • Water swellable rubber and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0033] Embodiment 1~6 encounters water-swellable rubber

[0034] Table 1 shows the formulations of water-swellable rubber examples 1-6, and the unit is mass percent.

[0035] Table 1 water-swellable rubber embodiment 1~6

[0036] Example

serial number

Neoprene

glue

water soluble poly

Polyurethane

pottery

earth

Dihydroxypoly

ether

Accelerator

TT

polyethylene

wax

Calcium Oxide

2-Mercaptobenzene

imidazole

oxygen

change

zinc

oxidation

magnesium

1

32.9

42.8

8.2

3.0

1.0

3.9

3.9

1.0

2.3

1.0

2

40.2

40.4

8.0

2.4

0.4

2.8

3.2

0.8

1.2

0.6

[0037] 3

37.9

40.2

8.1

2.6

0.8

3.4

3.6

0.9

1.7

0.8

4

36.6

40.5

8.1

2.7

...

Embodiment 5

[0045] The product physical properties test result that embodiment 5 prepares is as shown in table 4:

[0046] Table 4

[0047]

[0048] Implementation of the standard {GB / T18173.3-2002} polymer waterproof material part 3 water-swellable rubber.

[0049] The data in Table 4 shows that the performance of the water-swellable rubber using the continuous extrusion microwave vulcanization process in the present invention fully complies with the national standard technical indicators and meets the use requirements, and some properties are better than the existing molding method.

[0050] Table 5 shows the output comparison between the production process of the present invention and the existing process when producing the same water-swellable rubber.

[0051] table 5

[0052]

Processing technology

Flat vulcanization

(20 holes)

Extrusion Microwave Vulcanization

(single mouth type)

yield increase

Output (m / 8 hours)

...

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PUM

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Abstract

The invention discloses a water swellable rubber which comprises the following components: 32.9-40.2wt% of chloroprene rubber, 40.2-42.8wt% of water soluble polyurethane, 8.0-8.2wt% of reinforcing filling agent, 2.4-3.0wt% of curing agent, 0.4-1.0wt% of accelerating agent, 2.8-3.9wt% of processing aid, 3.2-3.9wt% of dehumidifying and defoaming agent, 0.8-1.0wt% of anti-aging agent, 1.2-2.3wt% of zinc oxide and 0.6-1.0wt% of magnesium oxide. The invention also discloses a production method of the water swellable rubber, which comprises the following steps: mixing raw materials; putting the mixture into an extruder to be extruded; and finally, putting the extruded mixture into a microwave vulcanizing machine to be vulcanized and molded. The invention has the following positive progressive effects: the water swellable rubber disclosed by the invention is a novel material and has excellent water absorption performance; the continuous extrusion microwave-vulcanizing process is adopted in the production method, so that the production method has the advantages of fewer processing procedures (elimination of trimming procedure), economization of manpower and raw materials, and the like; and the invention has stable product quality, high yield and high working efficiency, is suitable for large-batch production, and has good application prospects in the water swellable rubber field.

Description

technical field [0001] The invention relates to a water-swellable rubber, in particular to a water-swellable rubber and a production method thereof. Background technique [0002] Water-swellable rubber is a type of special rubber that has dual characteristics of rubber elasticity and water-swellability. It can absorb water and retain water while maintaining high elasticity and resistance to compression deformation. The use of this kind of material can solve the sealing problems such as the permanent deformation of the rubber and the shrinkage of the cement material caused by the shrinkage of the material. At the same time, because this kind of material has good infiltration and adhesion with polar surface materials such as asphalt, plastic, rubber, etc., as well as non-polar surface materials such as cement mortar and reinforced cement, it is suitable for tunnels, subways, culverts, buildings, underground It is one of the ideal mosaic materials for engineering, offshore oil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L11/00C08K13/02C08K3/22C08J3/28C08J3/24B29C47/00B29C35/08
Inventor 金祥生崔云徐晨昀
Owner 上海长宁橡胶制品厂有限公司
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