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Grouting formula and using method thereof

A formula, toluene diisocyanate technology, applied in the direction of adhesive types, polyurea/polyurethane adhesives, adhesive additives, etc., to achieve the effect of low viscosity, ideal service life, and lower initial viscosity

Inactive Publication Date: 2018-12-28
HUBEI SANJIANG AEROSPACE JIANGHE CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is helpless for large-area, high-depth insulation layer to insulation layer debonding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The present invention will be further described below in conjunction with the examples, but the protection scope of the present invention is not limited to the scope expressed in the examples.

[0025] 1. Grouting formula

[0026] The grouting formulations in Examples 1-4 are specifically shown in Table 1 below, and the parts are parts by weight.

[0027] name

Example 1

Example 2

Example 3

Example 4

Hydroxyl-terminated polybutadiene (DQ)

100

100

100

100

Glycerol (GY)

0.1

0.15

0.15

0.2

Toluene diisocyanate (BQ)

8.08

8.27

8.27

8.45

Zinc oxide (YX)

3

5

4

3

Dibutyltin dilaurate (Sn)

0.45

0.4

0.45

0.5

Di-isooctyl sebacate (GZ)

20

30

20

30

[0028] 2. Preparation of grouting material

[0029] During preparation, include quality control, raw material preparation and mixing steps as follows:

[0030] 1. Quality control

[0031] (1) T...

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PUM

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Abstract

The invention discloses a grouting formula and a using method thereof. The grouting formula comprises, by weight, 100 parts of hydroyl-terminated polybutadiene, 20-40 parts of diisooctyl sebacate, 1-5parts of zinc oxide, 0.95-1.3 parts of toluene diisocyanate, 0.343-0.685 part of dibutyltin dilaurate and 0.1-0.2 part of propanetriol, wherein toluene diisocyanate weight part=toluene diisocyanate molecular weight*total hydroxyl mol number*0.65, and the total hydroxyl mol number= hydroyl-terminated polybutadiene hydroxyl mol number*propanetriol hydroxyl mol number. According to the grouting formula, material body performance indicators and process performance are good, an unglued interface defected space solid rocket engine charged combustion chamber can be repaired, the compatibility is good, normal temperature curing can be achieved, curing time is adjustable, and all performance of a material can be improved to ensure large-area high-depth interface defects can be repaired.

Description

technical field [0001] The invention belongs to the technical field of solid rocket motor manufacturing, and in particular relates to a grouting formula and an application method thereof. Background technique [0002] The bonding interface structure of the charge combustion chamber is shell and heat insulation layer, heat insulation layer and heat insulation layer, heat insulation layer and lining layer, lining layer and grain column. Debonding will cause the combustion surface of the propellant to increase instantaneously when the engine is burning, the pressure of the casing will increase sharply, and in severe cases, an explosion will occur, resulting in the failure of the test. Research on grouting repair technology has been carried out both at home and abroad. The existing grouting materials generally use epoxy resin / polysulfide rubber system, and this type of material uses epoxy resin and polysulfide rubber as the base material; butadiene rubber is also used. However...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J11/04C09J11/06
CPCC08K2003/2296C09J11/04C09J11/06C09J175/14C08K5/11C08K3/22
Inventor 周芬陈永钊贾冬梅王利明朱稼麟
Owner HUBEI SANJIANG AEROSPACE JIANGHE CHEM TECH
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