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A kind of pet plastic toughening agent and preparation method

A toughening agent and plastic technology, applied in the field of plastic toughening agent, can solve the problems of crystal point, fogging, influence, etc., and achieve good toughening effect and toughness improvement effect.

Active Publication Date: 2018-10-09
东莞鸿冠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

However, DuPont PTW (ethylene butyl acrylate) and Akema 8900 are more functional as compatibilizers. They can indeed play a certain role in toughening PET products, but the added ratio is too large. About 2%, when used in transparent PET products, there will be crystal points, which will have a great impact on transparent PET products, and even fog

Method used

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  • A kind of pet plastic toughening agent and preparation method
  • A kind of pet plastic toughening agent and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] The PET plastic toughening agent disclosed in this embodiment includes the following components and parts by weight: PET: 15-45 parts; maleic anhydride grafted SEBS: 12-28 parts; dispersant: 1-10 parts; Chain agent: 0.5-1.5 parts; MBS: 25-38 parts; transparent nucleating agent: 2-10 parts; phosphite stabilizer: 3-6 parts; diffusing oil: 1-4 parts.

[0032] The PET is PET slices or granules. In this embodiment, China Resources PET slices are used, and PET is used as the base material to better act on PET products; the maleic anhydride-grafted SEBS is granules, and the maleic anhydride-grafted SEBS is PET Compatibilization between products and additives, better absorption of additives; the dispersant is powdery, and the dispersant can disperse various materials in the formula more evenly; the chain extender is pulverized, The chain agent increases the reaction of functional groups, and the molecular weight increases by 30% to 40%. MBS (methyl methacrylate, butadiene, styr...

Embodiment 2

[0041] The preparation method of the PET plastic toughening agent provided in this embodiment is basically the same as in Example 1, the difference being that it comprises the following steps:

[0042] (1) Take the dispersant, chain extender, transparent nucleating agent, and phosphite stabilizer by parts by weight, mix and stir in a mixer for 1 hour to achieve uniformity, and obtain mixture A;

[0043] Components and parts by weight: dispersant: 10 parts; chain extender: 1.5 parts; transparent nucleating agent: 5 parts; phosphite stabilizer: 5 parts;

[0044] (2) Take PET, maleic anhydride grafted SEBS, MBS by parts by weight, mix and stir in mixer for 30 minutes, obtain mixture B;

[0045] Components and parts by weight: PET: 45 parts; maleic anhydride grafted SEBS: 28 parts; MBS: 30 parts;

[0046] (3) Mix mixture A and mixture B, add 1 part of diffusion oil, put it into a high-speed mixer, and stir for 2 hours at a speed of 500-600r / min to obtain mixture C;

[0047] (4) ...

Embodiment 3

[0051] The preparation method of the PET plastic toughening agent provided in this embodiment is basically the same as in Example 1, the difference being that it comprises the following steps:

[0052] (1) Take the dispersant, chain extender, transparent nucleating agent, and phosphite stabilizer by parts by weight, mix and stir in a mixer for 1 hour to achieve uniformity, and obtain mixture A;

[0053] Components and parts by weight: dispersant: 3 parts; chain extender: 1 part; transparent nucleating agent: 2 parts; phosphite stabilizer: 3 parts;

[0054](2) Take PET, maleic anhydride grafted SEBS, MBS by parts by weight, mix and stir in mixer for 30 minutes, obtain mixture B;

[0055] Components and parts by weight: PET: 15 parts; maleic anhydride grafted SEBS: 20 parts; MBS: 25 parts;

[0056] (3) Mix mixture A and mixture B, add 2 parts of diffusion oil, put it into a high-speed mixer, and stir for 2 hours at a speed of 500-600r / min to obtain mixture C;

[0057] (4) Put ...

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Abstract

The invention discloses a PET plastic toughening agent comprises the following components in parts by weight: 15-45 parts of PET, 12-28 parts of maleic anhydride grafted SEBS, 1-10 parts of a dispersant, 0.5-1.5 parts of a chain extender, 25-38 parts of MBS, 2-10 parts of a transparent nucleating agent, 3-6 parts of a phosphite stabilizer and 1-4 parts of diffusion oil. The mass fraction of the PET plastic toughening agent added into a PET product is 0.2-1%. The invention also discloses a preparation method of the PET plastic toughening agent. The PET plastic toughening agent disclosed by the invention does not influence the transparency of the PET product and can achieve a very good toughening effect on the PET product, and the toughness of the PET product is improved by 15-30%; a small amount of the PET plastic toughening agent is added and cannot influence the physical property of subsequent processing of PET; the PET plastic toughening agent is environmentally friendly and non-toxic, cannot generate a separation phenomenon for the PET product, is highly compatible with PET by taking PET as a base material, and can better act on the PET product.

Description

technical field [0001] The invention relates to the technical field of plastic toughening agents, in particular to a PET plastic toughening agent and a preparation method. Background technique [0002] Polyethylene terephthalate (PET) is a thermoplastic engineering plastic with good mechanical properties, electrical insulation, heat resistance and chemical resistance, so it is widely used in the fields of fibers, films and beverage bottles . [0003] Under the commonly used processing mold temperature, the crystallization rate of PET is too slow, resulting in imperfect and uneven crystallization, resulting in prolonged molding cycle, products are easy to adhere to the mold, and have warping, rough and dull surface, impact resistance Disadvantages such as poor resistance to heat and humidity. [0004] Commercially available DuPont PTW (ethylene butyl acrylate) and Akema 8900, DuPont PTW is a terpolymer grafted with GMA, mainly used in PBT, PET, PC, PA and PBT / PC, PET / PC, et...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L51/00C08L51/04B29C47/92B29C48/92
Inventor 胡冠中
Owner 东莞鸿冠新材料科技有限公司
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