Post-treatment method for MC nylon composite material

A nylon and aging treatment technology, applied in the field of plastic materials, can solve the problems of reducing the mechanical strength of MC nylon materials, unfavorable structural optimization, and affecting production efficiency, etc., and achieve the effects of being easy to be widely used, good toughness, and guaranteed production efficiency

Inactive Publication Date: 2019-04-19
江苏易元新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the "concentration" process of centralized post-processing of the MC nylon blank material in the production process, the MC nylon blank material is in a process of sharp cooling. Internal stress, leading to the risk of cracking and dimensional instability of MC nylon materials during machining and use
In this way, some producers will use a water bath (put the concentrated MC nylon material into the pool together, heat the water until the water starts to boil, start timing, let the MC nylon material boil in the pool for several Hours later, cool down the water and take out the MC nylon blank material) to concentrate on eliminating internal stress. Although this method can eliminate most of the internal stress, this method will reduce the original mechanical strength of the MC nylon material and make the material rich. Toughness (increased elongation at break)
Such a result is not conducive to the optimization of the structure of the product to save the use of materials
[0005] In order to obtain the ideal high-strength MC nylon material, the best way is to slowly cool the polymerized MC nylon material in the mold for more than several hours, so that high-strength and low-stress MC nylon material will be obtained, but in this way will seriously affect production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In order to be able to concentrate on casting MC nylon blanks, it is also possible to wait for the blanks of MC nylon products to gather to a certain amount (can be determined according to the volume of the post-processing equipment), then the temperature of the MC nylon blanks will drop (it must be in the below 100°C), put all the blanks that have been concentrated into several slow cooling equipment (the slow cooling equipment here is an oven containing three media (oil, paraffin or air) below 100°C), and then The oven is slowly heated to 150°C to 190°C and then kept constant for a period of time (depending on the thickness of the blank, generally it takes about 15 minutes for 1mm), then stop heating the medium in the oven, let the MC nylon blank in the oven with the medium Slowly lower the temperature to below 100°C and take out the blank. After putting the MC nylon blank material out into the warehouse, it will undergo aging treatment for a certain number of days (m...

Embodiment 2

[0027] Put the MC nylon blank material just taken out from the mold into a preheated (temperature range: 150°C ~ 190°C) movable oven, and move the MC nylon blank material with the oven to several (according to production capacity needs) ) in a dedicated slow cooling oven (initial temperature range: 150°C to 190°C) for slow cooling (end temperature range: below 100°C), take it out after several hours (depending on the cooling speed), and then heat up the slow cooling oven Wait for the next batch of MC nylon blank materials to start cooling slowly. After the MC nylon blank material taken out is put into storage, it will undergo aging treatment for a certain number of days to make the obtained MC nylon composite material more stable and ensure the final machining size.

Embodiment 3

[0029] Put the MC nylon blank material just taken out from the mold into a preheated (temperature range: 150°C ~ 190°C) movable oven, and move the MC nylon blank material with the oven to several (according to production capacity needs) ) in a special slow cooling treatment oil bath (initial temperature range: 150°C ~ 190°C) for slow cooling (end temperature range: below 100°C), take it out after several hours (depending on the cooling speed), and then put the slow cooling oil The bath is heated up to the initial temperature and waits for the next batch of MC nylon rough material to be slowly cooled. After the MC nylon blank material taken out is put into storage, it will undergo aging treatment for a certain number of days to make the obtained MC nylon composite material more stable and ensure the final machining size.

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Abstract

The invention belongs to the technical field of plastic materials, and concretely relates to a post-treatment method for an MC nylon material. The temperature of a movable oven and the starting temperature of a slow cooling device are all designed in a range of 150-190 DEG C, and the temperature range is close to the maximum temperature of polymerization of MC nylon and the temperature required for crystallization, so an MC nylon blank material has a certain temperature condition to continuously complete the crystallization process; the crystallization process of the MC nylon blank material isa slow process from heat absorption to heat release, and a corresponding slow cooling condition must be set to crystallize the MC nylon blank material completely and make crystals regularized, and slow cooling is carried out for several hours to 100 DEG C or less to meet the condition, so the obtained MC nylon composite material has stable high mechanical strength and good toughness; and the lowly cooled MC nylon composite material can be aged for several days to ensure the stability of the finish size, so the processing precision of the product is ensured, and the production efficiency is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of plastic materials, and in particular relates to a post-processing method for MC nylon materials. Background technique [0002] MC nylon, also known as monomer casting nylon, is a kind of engineering plastics. MC nylon products have many unique properties such as light weight, high strength, self-lubricating, wear-resistant, anti-corrosion, insulation, etc., and are used in almost all industrial fields. It can directly replace some metal products such as copper, stainless steel, aluminum alloy, etc., "replacing steel with plastic, with excellent performance". Over the years, MC nylon's pulleys, sliders, gears, worm gears, support wheels, supporting wheels, running wheels, water pump impellers, bushings, bearing bushes, live valve bodies, rubber baffles, pulleys, running wheels, rods, pipes, and plates etc., not only better replace the corresponding metal products, reduce the cost, but also prolong the se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/00B29B13/04C08L77/00
CPCB29B13/04C08J7/00C08J2377/00
Inventor 不公告发明人
Owner 江苏易元新材料科技有限公司
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