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A kind of modified powder nitrile rubber and its application

A powdered nitrile rubber, modified technology, applied in the field of polymer materials, can solve the problems of rigidity and heat resistance decline, and achieve the effect of remarkable low temperature toughness, good rigidity and heat resistance, and good toughness

Active Publication Date: 2021-03-09
常州市五洲化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, although powdered nitrile rubber can improve the impact resistance, elongation at break and low-temperature properties of products of rigid PVC, the rigidity and heat resistance of the material have appeared to varying degrees with the improvement of the impact toughness of the blend. The decline has brought new defects to the product

Method used

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  • A kind of modified powder nitrile rubber and its application
  • A kind of modified powder nitrile rubber and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of modified powder nitrile rubber of the present invention, described modified powder nitrile rubber is made up of following components, by weight:

[0016] Semi-crosslinked powdered nitrile rubber (particle size: D 90 =400-600 micron) 60 parts

[0017] Fully cross-linked powdered nitrile rubber (particle size: D 90 =20-30 micron) 10 parts

[0018] Calcium terephthalate (particle size: D 90 =8-10 micron) 30 parts

[0019] The preparation method of the modified powdered nitrile rubber of the present invention comprises the following steps: mixing calcium terephthalate in a high mixer with heating function and heating to 50°C, adding fully cross-linked powdered nitrile rubber and mixing After 5 minutes, add semi-crosslinked powdered nitrile rubber and mix for 5 minutes to obtain.

Embodiment 2

[0021] A kind of modified powder nitrile rubber of the present invention, described modified powder nitrile rubber is made up of following components, by weight:

[0022] Semi-crosslinked powdered nitrile rubber (particle size: D 90 =400-600 micron) 70 parts

[0023] Fully cross-linked powdered nitrile rubber (particle size: D 90 =20-30 micron) 20 parts

[0024] Calcium terephthalate (particle size: D 90 =8-10 micron) 10 parts

[0025] The preparation method of the modified powdered nitrile rubber of the present invention comprises the following steps: mixing calcium terephthalate in a high mixer with heating function and heating to 60°C, adding fully cross-linked powdered nitrile rubber and mixing After 5 minutes, add semi-crosslinked powdered nitrile rubber and mix for 3 minutes to obtain.

Embodiment 3

[0027] A kind of modified powder nitrile rubber of the present invention, described modified powder nitrile rubber is made up of following components, by weight:

[0028] Semi-crosslinked powdered nitrile rubber (particle size: D 90 =400-600 micron) 65 parts

[0029] Fully cross-linked powdered nitrile rubber (particle size: D 90 =20-30 micron) 15 parts

[0030] Calcium terephthalate (particle size: D 90 =8-10 micron) 20 parts

[0031] The preparation method of the modified powdered nitrile rubber of the present invention comprises the following steps: mixing calcium terephthalate in a high mixer with heating function and heating to 55°C, adding fully crosslinked powdered nitrile rubber and mixing After 5 minutes, add semi-crosslinked powdered nitrile rubber and mix for 4 minutes to obtain.

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Abstract

The invention discloses a modified powdered nitrile rubber and an application thereof. The modified powdered nitrile rubber is composed of the following components in parts by weight: 60-70 parts of semi-crosslinked powdered nitrile rubber, fully crosslinked 10-20 parts of powdered nitrile rubber, 10-30 parts of calcium terephthalate. The process steps of the preparation method of the modified powdered nitrile rubber are: mixing calcium terephthalate in a high mixer with heating function and heating to 50-60°C, adding fully cross-linked powdered nitrile rubber and mixing for 5 minutes , then add semi-crosslinked powdered nitrile rubber, mix for 3‑5min, and you get it. The modified powdered nitrile rubber of the present invention can be used to prepare special-shaped materials for interior windows. It is uniformly dispersed in the product, which can not only improve the toughness of the product, but also maintain the rigidity and heat resistance well.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to a modified powdered nitrile rubber and an application thereof. Background technique [0002] Rigid polyvinyl chloride (PVC-U) is mainly used in three fields: building materials, electronic appliances and packaging. It has the advantages of light weight, low manufacturing cost, convenient construction and maintenance. However, rigid PVC plastic is a brittle material, and its defects such as poor toughness, low heat resistance and poor thermal stability greatly limit its further development and application. For the toughening modification of PVC-U, a series of mature routes and methods have been formed, such as copolymerization and blending. modified materials. [0003] However, although powdered nitrile rubber can improve the impact resistance, elongation at break and low-temperature properties of products of rigid PVC, the rigidity and heat resistance of the material have appear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/02C08K5/098C08L27/06C08L23/28C08K13/02C08K5/09C08K3/26
CPCC08K2003/265C08L9/02C08L27/06C08L2201/08C08L2205/025C08L2205/035C08L2205/06C08K5/098C08L23/286C08K13/02C08K5/09C08K3/26
Inventor 张莉娜方春平
Owner 常州市五洲化工有限公司
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