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Lead-free rubber-based elastic compound shielding material and preparation method thereof

A lead-free rubber and composite shielding technology, which is applied in the field of materials and its preparation process, can solve the problems of unsatisfactory X-ray shielding, expensive recycling and disposal, and high biological hazards, and achieve good environmental friendliness and compatibility , light weight, good shielding performance

Active Publication Date: 2014-02-12
成都盛帮核盾新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, "lead" is a toxic heavy metal, which is extremely harmful to the human body and the environment; every link of "lead" storage, processing, transportation, and use will generate lead dust or lead vapor, thereby polluting the environment anytime and anywhere; ” are more costly to recycle and dispose of
In addition, the "K-layer power absorption boundary" of lead is 88Kev, so lead has a "absorption weak zone" for rays with energy between 40kev and 80kev, which is not ideal for X-ray shielding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 Bismuth-containing rubber

[0037] Step 1 Molding

[0038]Get 18.3 parts of rubber containing aromatic rings such as benzene and put it into an open mill for masticating, and masticate for 25 minutes at a temperature of 50°C;

[0039] Step 2 Bismuth and its plasticizer are stirred and mixed evenly

[0040] Add 60 parts of bismuth equivalent to the formula to 10 parts of plasticizer and stir together to disperse evenly in advance;

[0041] Step 3 Mixing

[0042] The rubber containing aromatic rings such as benzene was put into the mill, and 10 parts of N990 (carbon black filler), surfactant, ZNO (zinc oxide) 0.47 part, ST / AC (stearic acid) 0.1 part, TT (Dithiotetramethylthiuram) 0.03 part, DM (dithiodibenzothiazole) 0.1 part, TRA (tetrathiobis-1.5-pentylidenethiuram) 1 part After operating for 9 minutes, Add dispersed bismuth and plasticizer;

[0043] Step 4 Vulcanization and crosslinking

[0044] Put the kneaded lead-free rubber-based elastic shielding m...

Embodiment 2

[0045] Example 2 Tungsten-containing rubber

[0046] Step one, plasticizing

[0047] Get 13.5 parts of aromatic ring rubber containing benzene and the like and put it into an open mill for masticating, and masticate for 38 minutes at a temperature of 55° C.;

[0048] Step 2 Stir and mix tungsten and its plasticizer evenly

[0049] Add 60 parts of tungsten equivalent to the formula to 9 parts of plasticizer and stir together to disperse evenly in advance;

[0050] Step 3 Mixing

[0051] Put the aromatic ring rubber containing benzene into the open mill, add 10 parts of N990 (carbon black filler) equivalent to the formula, surfactant, 0.3 parts of ZNO (zinc oxide), 0.44 parts of ST / AC (stearic acid), TT (dithiotetramethylthiuram) 0.06 parts, DM (dithiodibenzothiazole) 0.2 parts, TRA (tetrathiobis-1.5-pentylidene thiuram) 1.3 parts After 12 minutes of operation, Add dispersed tungsten and plasticizer;

[0052] Step 4 Vulcanization and crosslinking

[0053] Put the kneaded l...

Embodiment 3

[0054] Example 3 Rare earth-containing rubber

[0055] Step 1 Molding

[0056] Get 17 parts of rubber containing aromatic rings such as benzene and put it into an open mill for masticating, and masticate for 35 minutes at a temperature of 58°C;

[0057] Step 2 Rare earth and its plasticizer are stirred and mixed evenly

[0058] Add 60 parts of rare earth equivalent to the formula to 8 parts of plasticizer and stir together to disperse evenly in advance;

[0059] Step 3 Mixing

[0060] Put the aromatic ring rubber containing benzene into the open mill, add 11 parts of N990 (carbon black filler) equivalent to the formula, surfactant, 1 part of ZNO (zinc oxide), 0.8 part of ST / AC (stearic acid), TT After 15 minutes of operation, Add dispersed rare earth and plasticizer;

[0061] Step 4 Vulcanization and crosslinking

[0062] Put the kneaded lead-free rubber-based elastic shielding material into a flat vulcanizer, and carry out vulcanization and crosslinking reaction for 38 ...

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Abstract

The invention discloses a lead-free rubber-based elastic compound shielding material, which has an island phase structure formed by blending and dispersing a ray shielding metal element and / or a compound thereof with a radiation-resistant substrate material. A uniformly-dispersed lead-free rubber-based elastic compound shielding material is formed by crosslinking the island phase. The material has the advantages of high shielding performance, freeness from lead, environmental friendliness, high toughness, high structural suitability, and the like.

Description

technical field [0001] The invention belongs to the technical field of materials and preparation techniques thereof, in particular to a lead-free rubber-based elastic composite shielding material and a preparation technique thereof. Background technique [0002] As we all know, in the nuclear field, γ-rays and X-rays have strong penetrability to human tissues, and have different penetration capabilities for tissues of different densities. Afterwards, biological radiation effects will be produced, causing varying degrees of damage to the human body and organisms. Therefore, in order to reduce the risk of radiation damage and protect the safety of operators and environmental organisms to the greatest extent, radiation shielding materials have emerged as the times require. [0003] In general, the actual demand for radiation shielding materials can be summarized into two categories: one is to protect operators and the public from the perspective of "human" protection, and req...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/06C08L21/00C08K13/06C08K3/04C08K3/08C08K3/22C08K5/40C08K5/47
Inventor 张科谢波康慨刘传雷
Owner 成都盛帮核盾新材料有限公司
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