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Ternary blend material for mask body

A cover and blending technology is used in the field of gas mask materials, which can solve the problems of poor penetration resistance, low rebound rate, and strong mold corrosion.

Inactive Publication Date: 2020-12-04
SHANXI XINHUA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is the design defect of a single rubber material, poor penetration resistance, low rebound rate, or strong corrosion to molds. Through the ternary blending of rubber materials, its comprehensive use ability can be improved.

Method used

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  • Ternary blend material for mask body
  • Ternary blend material for mask body
  • Ternary blend material for mask body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of ternary blending material for making mask body, as follows:

[0025] 1. Composition and dosage:

[0026]

[0027] 2. The specific mixing process is as follows:

[0028] (1) Mix natural rubber, chlorinated butyl rubber, and antioxidant 2246 on an open mill;

[0029] Roll distance: 0.5mm, roll temperature: 55°C, time: 11min;

[0030] (2) Mix the above-mentioned binary blend rubber and butyl rubber, add sulfur, and knead;

[0031] Roll distance: 1.5mm, roll temperature: 45°C, time: 7min;

[0032] (3), add stearic acid, 1 / 2 weight part of high wear-resistant carbon black and all semi-reinforcing carbon black, 1 / 2 weight part of low particle size naphthenic oil, and knead;

[0033] Roll distance: 2.5mm, roll temperature: 60°C, time: 5min;

[0034] (4) Add zinc oxide and the remaining high wear-resistant carbon black and low particle size naphthenic oil, and knead;

[0035] Roll distance: 2.5mm, roll temperature 50°C, time 3min;

[0036] (5), the next film...

Embodiment 2

[0047] A kind of ternary blending material for making mask body, as follows:

[0048] 1. Composition and dosage:

[0049]

[0050] 2. The specific mixing process is as follows:

[0051] (1) Mix natural rubber, chlorinated butyl rubber, and antioxidant 2246 on an open mill;

[0052] Roll distance: 1.0mm, roll temperature: 70°C, time: 12min;

[0053] (2) Mix the above-mentioned binary blend rubber and butyl rubber, add sulfur, and knead;

[0054] Roll distance: 1.5mm, roll temperature: 40°C, time: 7min;

[0055] (3), add stearic acid, 1 / 2 weight part of high wear-resistant carbon black and all semi-reinforcing carbon black, 1 / 2 weight part of naphthenic oil, and knead;

[0056] Roll distance: 2.0mm, roll temperature: 65°C, time: 7min;

[0057] (4), adding zinc oxide and the remaining high wear-resistant carbon black and naphthenic oil, mixing;

[0058] Roll distance: 3.0mm, roll temperature: 50°C, time: 3min;

[0059] (5), the next film, natural cooling for 60min;

[...

Embodiment 3

[0070] A kind of ternary blending material for making mask body, as follows:

[0071] 1. Composition and dosage:

[0072]

[0073] 2. The specific mixing process is as follows:

[0074] (1) Mix natural rubber, chlorinated butyl rubber, and antioxidant 2246 on an open mill;

[0075] Roll distance: 1.0mm, roll temperature: 60°C, time: 12min;

[0076] (2) Mix the above-mentioned binary blend rubber and butyl rubber, add sulfur, and knead;

[0077]Roll distance: 1.5mm, roll temperature: 40°C, time: 7min;

[0078] (3), add stearic acid, 1 / 2 weight part of high wear-resistant carbon black and all semi-reinforcing carbon black, 1 / 2 weight part of naphthenic oil, and knead;

[0079] Roll distance: 2.0mm, roll temperature: 65°C, time: 7min;

[0080] (4), adding zinc oxide and the remaining high wear-resistant carbon black and naphthenic oil, mixing;

[0081] Roll distance: 3.0mm, roll temperature: 55°C, time: 4min;

[0082] (5), the next film, natural cooling for 60min;

[0...

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Abstract

The invention discloses a ternary blending material used for preparing a mask hood body. The ternary blending material is prepared from the following components: 70-75 parts of natural rubber, 20-10 parts of butyl rubber, 10-15 parts of chlorinated butyl rubber, 1.0-1.5 parts of sulphur, 2.0-2.5 parts of stearic acid, 5.0-6.0 parts of zinc oxide, 1.5-2.0 parts of an accelerator TT, 0.8-1.0 part ofan accelerator DM, 30-35 parts of high-abrasion-resistant carbon black, 10-15 parts of semi-reinforcing carbon black, 8-10 parts of microcrystalline wax, 6-8 parts of naphthenic oil and 1.0-1.5 partsof an anti-aging agent 2246. By adopting a heterogeneous rubber ternary blending scheme, the toxic agent penetration resistant time reaches 360 min, the rebound rate is not less than 65%, the elongation at failure reaches 520%, the strength at 300% elongation reaches 6.2 MPa, blooming is avoided, and irritation to the human body is avoided.

Description

technical field [0001] The invention belongs to the field of gas mask materials, in particular to a ternary blend material used for making a mask body. Background technique [0002] The penetration of toxic and harmful substances into the connection interface of the mask body and the joint with the face is the main reason for the failure of the mask's protective ability. Tracing it to its cause is that the rebound rate of the selected polymer rubber material used to make the mask cover material cannot reach the minimum 60% requirement. [0003] Although the traditional natural rubber used to make the cover body has a rebound rate of over 75%, it is gradually replaced by halogenated butyl rubber due to its poor resistance to penetration of toxic and harmful substances, and easy aging and blooming. Although halogenated butyl rubber has excellent anti-toxic agent penetration ability and excellent anti-aging properties, its rebound rate of less than 20% often fails to meet the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08L23/22C08L23/28C08L91/06C08K13/02C08K3/06C08K5/09C08K3/22C08K3/04
CPCC08K2003/2296C08L7/00C08L2205/035C08L23/22C08L23/283C08L91/06C08K13/02C08K3/06C08K5/09C08K3/22C08K3/04
Inventor 杨建功常慧芳
Owner SHANXI XINHUA CHEM