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High-heat-resisting modified resin and preparation method thereof

A modified resin, high heat-resistant technology, applied in the field of new materials, can solve problems such as fluidity reduction, fluidity reduction, size deviation, etc., to achieve the effect of reducing viscosity, reducing internal stress, and improving material fluidity

Inactive Publication Date: 2018-12-11
武汉中智德远科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN1126734A discloses the method that adopts maleimide modification to prepare heat-resistant ABS resin, and this method now uses a kind of maleimide copolymer, a kind of ABS graft copolymer and a kind of AS copolymer to make heat-resistant Masterbatch, further blending heat-resistant masterbatch with ABS and AS to prepare heat-resistant ABS resin, the heat resistance of the resin has been significantly improved, but the fluidity has been significantly reduced
The reduction of fluidity will lead to a large internal stress remaining in the injection molding process. The existence of internal stress will cause deformation of the part in the subsequent heat storage test and dimensional deviation during the assembly process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A highly heat-resistant modified resin comprises the following raw materials in parts by weight: 53 parts of rosin, 35 parts of fresh sisal leaves, 13 parts of sepiolite, 11 parts of straw, 3 parts of paraffin, and 2 parts of chitosan.

[0024] The preparation method of high heat-resistant modified resin in the present embodiment comprises the following steps:

[0025] 1) Pulverize the sisal, add 6 times the mass of water, adjust the pH value to 4.2, and then perform microwave extraction twice at a temperature of 52°C, and combine the two extracts to obtain the sisal concentrate;

[0026] 2) Melt the rosin, add 20% ethanol solution with 4 times the mass, and stir evenly at room temperature to obtain the rosin solution;

[0027] 3) Combine the sisal concentrated solution and the rosin solution, put them into an ultrasonic processor and perform ultrasonic treatment at a temperature of 85°C for 2 hours, and the ultrasonic power is 1000W to obtain the first mixed solution; ...

Embodiment 2

[0035] A highly heat-resistant modified resin comprises the following raw materials in parts by weight: 58 parts of rosin, 37 parts of fresh sisal leaves, 16 parts of sepiolite, 13 parts of straw, 4 parts of paraffin, and 3 parts of chitosan.

[0036] The preparation method of high heat-resistant modified resin in the present embodiment comprises the following steps:

[0037] 1) Pulverize the sisal, add 7 times the mass of water, adjust the pH value to 4.8, then extract twice by microwave at a temperature of 55°C, and combine the two extracts to obtain the sisal concentrate;

[0038] 2) Melt the rosin, add 20% ethanol solution with 4 times the mass, and stir evenly at room temperature to obtain the rosin solution;

[0039] 3) Combine the sisal concentrated solution and the rosin solution, put them into an ultrasonic processor and perform ultrasonic treatment at a temperature of 85° C. for 3 hours, and the ultrasonic power is 1000 W to obtain the first mixed solution;

[0040]...

Embodiment 3

[0047] A highly heat-resistant modified resin comprises the following raw materials in parts by weight: 60 parts of rosin, 38 parts of fresh sisal leaves, 18 parts of sepiolite, 15 parts of straw, 5 parts of paraffin, and 4 parts of chitosan.

[0048] The preparation method of high heat-resistant modified resin in the present embodiment comprises the following steps:

[0049] 1) Pulverize the sisal, add 10 times the mass of water, adjust the pH value to 5.1, and then perform microwave extraction twice at a temperature of 62° C., and combine the two extracts to obtain the sisal concentrate;

[0050] 2) Melt the rosin, add 20% ethanol solution with a mass times 6 times, and stir evenly at room temperature to obtain a rosin solution;

[0051] 3) Combine the sisal concentrated solution and the rosin solution, put them into an ultrasonic processor and perform ultrasonic treatment at a temperature of 90° C. for 3 hours, and the ultrasonic power is 1000 W to obtain the first mixed so...

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Abstract

The invention discloses a high-heat-resisting modified resin, comprising the following raw materials in parts by weight: 53-67 parts of rosin, 35-42 parts of sisal hemp fresh leaves, 13-24 parts of sepiolite, 11-19 parts of straw, 3-7 parts of paraffin and 2-6 parts of chitosan. The high-heat-resisting modified resin disclosed by the invention has superhigh heat resistance, can obviously reduce the viscosity of the material and improve the mobility of the material while the heat resistance and impact resistance of the material itself are reduced, and then the inner stress in the process of injection molding is reduced, and meanwhile adoption of a low-cost material can effectively reduce cost.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a high heat-resistant modified resin and a preparation method thereof. Background technique [0002] Modified resin refers to a mixture of normal metabolites or secretions of plant tissues and volatile oils, etc., which are processed and modified by filling, blending, reinforcement, etc., to improve the performance of all aspects. The most important application of modified resins is in the manufacture of plastics. In order to facilitate processing and improve performance, additives are often added, and sometimes they are directly used for processing and forming, so they are often synonymous with plastics. Modified resin is also the basic raw material for the manufacture of synthetic fibers, coatings, adhesives, insulating materials, etc. There are many types of modified resins, among which polyethylene (PE), polyvinyl chloride (PVC), polystyrene (PS), polypropylene (PP) and ABS res...

Claims

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Application Information

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IPC IPC(8): C08L93/04C08L97/02C08L91/06C08L5/08C08K3/34
CPCC08L93/04C08L2201/08C08L2205/025C08L2205/035C08L2205/16C08L97/02C08L91/06C08L5/08C08K3/346
Inventor 郑辉
Owner 武汉中智德远科技开发有限公司
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