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A kind of composition of polybutylene adipamide and polytetrafluoroethylene

A technology of polybutylene adipamide and polytetrafluoroethylene, which is applied in the field of preparation of modified polybutylene adipamide, and can solve problems such as complex components, uneven mixing, and affecting the use effect of industrial devices

Active Publication Date: 2017-08-22
ZHEJIANG QUZHOU WANNENGDA SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The existing known technologies of PA46-containing compositions all have the disadvantages of complex components, poor compatibility between polymers, uneven mixing, etc., which affect the use effect in industrial devices

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step 1. Preparation of water phase

[0032] Add 1000Kg of water and 1Kg of ammonium lauryl sulfate into a 2000L autoclave, and stir evenly. Step 2. Preparation of oil phase

[0033] In a 200L reactor, add 100Kg of polybutylene adipamide powder, 1Kg of acrylic anhydride, 1Kg of γ-(methacryloyloxy)propyltrimethoxysilane (KH-570), and then add 0.08Kg of potassium persulfate Initiator, stir evenly.

[0034] Step 3. Polymerization

[0035] Add the oil phase solution prepared in step 2 to the reaction kettle equipped with the prepared water phase in step 1, then react at 90°C for 14 hours, discharge the material after the reaction is completed, filter, and dry to obtain the surface-grafted polyethylene glycol Butylenediamide powder.

[0036] Step 4. Blending and crushing

[0037] 80Kg of surface-grafted polybutylene adipamide powder obtained in step 3 is then mixed with 20Kg of PTFE powder, mixed in a 500L high-speed mixer, and then ground and crushed in a fluidized bed ...

Embodiment 2

[0039] Step 1. Preparation of water phase

[0040] Add 1000Kg of water and 0.5Kg of ammonium lauryl sulfate into a 2000L autoclave, and stir evenly.

[0041] Step 2. Preparation of oil phase

[0042] In a 200L reactor, mix 100Kg polybutylene adipamide, 0.5Kg acrylic anhydride, 0.5Kg γ-(methacryloyloxy)propyltrimethoxysilane (KH-570) monomer, and then add 0.05Kg Potassium persulfate initiator, stir evenly.

[0043] Step 3. Polymerization

[0044] Add the oil phase solution prepared in step 2 to the reaction kettle equipped with the prepared water phase in step 1, then react at 70°C for 20 hours, discharge the material after the reaction is completed, filter, and dry to obtain the surface-grafted polyhexene Butylenediamide powder.

[0045] Step 4. Blending and crushing

[0046] 70Kg of surface-grafted polybutylene adipamide powder obtained in step 3 is then mixed with 30Kg of PTFE powder in a 300L high-speed mixer, and then ground and crushed in a fluidized bed jet mill to ...

Embodiment 3

[0048] Step 1. Preparation of water phase

[0049] Add 1000Kg of water and 2Kg of sodium hexadecylbenzenesulfonate into a 2000L autoclave, and stir evenly.

[0050] Step 2. Preparation of oil phase

[0051] In a 200L reactor, mix 100Kg polybutylene adipamide, 2Kg acrylic anhydride, 2Kg γ-(methacryloyloxy)propyltrimethoxysilane (KH-570) monomer, and then add 0.1Kg persulfuric acid ammonium initiator, stir evenly.

[0052] Step 3. Polymerization

[0053] Add the oil phase solution prepared in step 2 to the reaction kettle equipped with the prepared water phase in step 1, then react at 100°C for 10 hours, discharge the material after the reaction, filter, and dry to obtain surface-grafted polyethylene glycol Butylenediamide powder.

[0054] Step 4. Blending and crushing

[0055] 90 parts of the surface-grafted polybutylene adipamide powder obtained in step 3 are mixed with 10 parts of PTFE powder in a 300L high-speed mixer, and then ground and crushed in a fluidized bed jet mi...

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Abstract

The invention relates to a composition of polytetramethyleneadiamide and polytetrafluoroethylene, which is characterized in that in a reaction vessel, pure water is added, a polymerization inhibitor is added, a certain amount of the dispersant, an initiator and polytetramethyleneadiamide powder, acrylic anhydride, gamma-(methacryloyl oxide)propyl trimethoxy silane(KH-570) are added, heated to the reaction temperature, surface-polymerized polytetramethyleneadiamide is obtained after reaction is completed, the product is filtered and dried, then is mixed in a high speed mixer with polytetrafluoroethylene, and then grinded and fragmented in a pulverizer to obtain the product.

Description

technical field [0001] The invention relates to a preparation method of modified polybutylene adipamide, in particular to a composition of polybutylene adipamide and polytetrafluoroethylene and a preparation method thereof. Background technique [0002] Polybutylene adipamide (PA46) is an aliphatic polyamide formed by polycondensation of butanediamine and adipic acid. Although it has a molecular structure similar to nylon 66, the amide group on each chain of a given length of PA46 The more the number, the more symmetrical the chain structure; and the highly symmetrical chain structure leads to high crystallinity and fast crystallization speed, so the melting point is higher, the heat distortion temperature is also higher, and the long-term use temperature can reach 163 °C. These characteristics make PA46 have technical advantages over other engineering plastics such as PA6, PA66, PPA and polyester in terms of heat resistance, mechanical strength at high temperature, wear res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L27/18C08J7/16
CPCC08J7/16C08J2377/06C08L77/06C08L27/18
Inventor 许益生徐卫东王琪宇
Owner ZHEJIANG QUZHOU WANNENGDA SCI & TECH