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Preparation method of boron-containing shielding composite material

A technology of composite materials and mixed materials, which is applied in the field of preparation of resin-based composite materials, can solve the problems of low boron solubility, poor mechanical properties of lead-boron polyethylene, use and other problems, and achieve good neutron shielding performance, excellent tensile strength, Effect of High Elastic Modulus

Inactive Publication Date: 2020-12-29
CENT FOR NUCLEAR & RADIATION SAFETY MINISTRY OF ECOLOGY & ENVIRONMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, lead-boron polyethylene has poor mechanical properties. Although it has a good radiation shielding effect, it cannot be used in engineering at present; boron-containing stainless steel has high strength, but the solubility of boron in stainless steel is low, and the shielding performance is insufficient; Al-B 4 C alloy has good thermal neutron absorption properties and can also be used as engineering structural materials, but it has the disadvantage of complicated preparation process

Method used

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Examples

Experimental program
Comparison scheme
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preparation example Construction

[0015] A preparation method of a boron-containing shielding composite material, comprising the steps of:

[0016] The first step: preparation of epoxy modified silicone resin

[0017] 100-110 parts of epoxy resin, 100-120 parts of silicone intermediate, 40-50 parts of reactive diluent, 5-10 parts of silane coupling agent, 2-5 parts of DMP-30 accelerator, Mix 4-5 parts of BYK-161 dispersant and 80-100 parts of polyetheramine curing agent, and stir at 100-200r / min for 10-15 minutes.

[0018] Among them, DMP30 is the abbreviation of 2, 4, and 6 tris(dimethylaminomethyl)phenol, and BYK161 is a specification brand of a dispersant product.

[0019] Step Two: Prepare Mixed Materials

[0020] 100-125 parts of the epoxy-modified silicone resin prepared in the first step, B 4 Mix 15-30 parts of C whiskers and 6-20 parts of chopped quartz fibers, and mix them uniformly in a kneader.

[0021] Step Three: Composite Curing

[0022] Put the mixed material prepared in the second step int...

Embodiment 1

[0024] The specific steps for the preparation of a boron-containing shielding composite material are:

[0025] The first step: preparation of epoxy modified silicone resin

[0026] 100 parts of epoxy resin, 100 parts of silicone intermediate, 40 parts of reactive diluent, 5 parts of silane coupling agent, 2 parts of DMP-30 accelerator, 4 parts of BYK-161 dispersant, 80 parts Parts of polyetheramine curing agent were mixed and stirred for 10 minutes at a speed of 100 / min.

[0027] Step Two: Prepare Mixed Materials

[0028] 100 parts of the epoxy-modified silicone resin that the first step is prepared, B 4 Mix 30 parts of C whiskers and 2 parts of chopped quartz fibers, and mix them uniformly in a kneader.

[0029] Step Three: Composite Curing

[0030] Put the mixed material prepared in the second step into a mold of specified specification and size, cure at 55°C for 2 hours, and then cure at 75°C for 5 hours. After the temperature drops to room temperature, the mold is remo...

Embodiment 2

[0033] The specific steps for the preparation of a boron-containing shielding composite material are:

[0034] The first step: preparation of epoxy modified silicone resin

[0035] 110 parts of epoxy resin, 120 parts of silicone intermediate, 50 parts of reactive diluent, 10 parts of silane coupling agent, 5 parts of DMP-30 accelerator, 4 parts of BYK-161 dispersant, 80 parts Parts of polyetheramine curing agent were mixed and stirred at 200r / min for 15min.

[0036] Step Two: Prepare Mixed Materials

[0037] 125 parts of epoxy-modified silicone resins, B 4 Mix 20 parts of C whiskers and 15 parts of chopped quartz fibers, and mix them uniformly in a kneader.

[0038] Step Three: Composite Curing

[0039] Put the mixed material prepared in the second step into a mold of specified specification and size, cure at 65°C for 3 hours, and then cure at 85°C for 7 hours. After the temperature drops to room temperature, the mold is removed to obtain a composite member.

[0040] So f...

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PUM

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Abstract

The invention discloses a preparation method of a boron-containing shielding composite material, wherein the preparation method comprises the following steps: step 1, preparing epoxy modified organicsilicon resin; step 2, preparing a mixed material; and step 3, curing the composite material. The boron-containing shielding composite material has the beneficial effects that the boron-containing shielding composite material is a novel composite material prepared by taking epoxy modified organic silicon resin as a matrix and taking chopped quartz fibers and B4C whiskers as reinforcing phases, andcompared with the prior art, the composite material has good neutron shielding performance; and meanwhile, the material has relatively high elasticity modulus, tensile strength and excellent high-temperature resistance. The boron-containing shielding composite material has application prospects in nuclear protection materials of reactors, accelerators, neutron sources and other facilities.

Description

technical field [0001] The invention belongs to a method for preparing a shielding material, in particular to a method for preparing a boride-containing resin-based composite material. Background technique [0002] In recent years, domestic and foreign development and design of lead-boron polyethylene, boron-containing stainless steel, Al-B 4 C alloys represent a series of lightweight and efficient polymer matrix composites and high strength and high modulus metal matrix composites. However, lead-boron polyethylene has poor mechanical properties. Although it has a good radiation shielding effect, it cannot be used in engineering at present; boron-containing stainless steel has high strength, but the solubility of boron in stainless steel is low, and the shielding performance is insufficient; Al-B 4 C alloy has good thermal neutron absorption properties and can also be used as engineering structural materials, but it has the disadvantage of complicated preparation process. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K7/10C08K7/04
CPCC08K7/10C08K7/04C08L83/04
Inventor 石兴伟宋维史强韩静茹左嘉旭胡文超
Owner CENT FOR NUCLEAR & RADIATION SAFETY MINISTRY OF ECOLOGY & ENVIRONMENT
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