Thermoplastic elastomer composition as well as preparation method and application thereof

A thermoplastic elastomer and composition technology, which is applied in the field of thermoplastic elastomer composition and its preparation, can solve the problems of increased hardness and viscosity of SBC, decreased processing performance, inability to exhibit viscoelasticity, etc. good elasticity

Pending Publication Date: 2021-06-11
盛嘉伦橡塑(河源)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the SBC main chain contains unsaturated double bonds, which are extremely unstable, resulting in poor aging resistance of SBC. Under the oxidation conditions of high-temperature air, the butadiene segment will be cross-linked, thereby increasing the hardness and viscosity of SBC. , the processing performance is reduced, and it cannot be viscoelastic at lower temperatures (such as 15-45 ° C) and low stress conditions (hand pinching), which limits its application

Method used

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  • Thermoplastic elastomer composition as well as preparation method and application thereof
  • Thermoplastic elastomer composition as well as preparation method and application thereof
  • Thermoplastic elastomer composition as well as preparation method and application thereof

Examples

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preparation example Construction

[0073] The present invention also provides a preparation method of the thermoplastic elastomer composition, comprising the steps of:

[0074] The styrene block copolymer, white mineral oil and plasticizer are mixed and melted.

[0075] The preparation method has simple technological process and simple equipment requirements, and is suitable for large-scale industrial production.

[0076] In one of the embodiments, the thermoplastic elastomer composition contains styrene block copolymer, white mineral oil, plasticizer, paraffin, thermoplastic resin, antioxidant, stearate and other additives ( Filler, pigment, essence), the preparation method of described thermoplastic elastomer composition comprises the steps:

[0077] S110 mixing the plasticizer and white mineral oil, heating and stirring to obtain the first product.

[0078] In one embodiment, the stirring rate is 20r / min-60r / min, the temperature is 120-140°C, and the working time is 10-30min.

[0079] S120 Pour the paraff...

Embodiment 1

[0088] This embodiment provides a thermoplastic elastomer composition and a preparation method thereof.

[0089] (1) In parts by weight, the raw materials for the preparation of thermoplastic elastomer composition 1 are as follows:

[0090]

[0091]

[0092] (2) Preparation of thermoplastic elastomer composition 1:

[0093] a: Pour 150N white mineral oil and DINP plasticizer into the reaction kettle, heat, keep the temperature between 120 ~ 140 ℃, stir at a stirring rate of 20r / min ~ 40r / min for 10min ~ 30min, stir until completely uniform After that, the first product is obtained.

[0094] b: Add 64# paraffin wax to the first product at 150-160°C, and stir at a stirring rate of 30r / min-50r / min for 20min-40min until the paraffin wax is completely melted to obtain the second product.

[0095] c: Add SEEPS4055, calcium carbonate, titanium dioxide pigment, strawberry flavor, antioxidant, hydrogenated carbon 5 petroleum resin and stearic acid to the second product under stir...

Embodiment 2

[0098] This embodiment provides a thermoplastic elastomer composition and a preparation method thereof.

[0099] (1) In parts by weight, the raw materials for the preparation of thermoplastic elastomer composition 2 are as follows:

[0100]

[0101]

[0102] (2) Preparation of thermoplastic elastomer composition 2:

[0103] The preparation method is the same as in Example 1, and a thermoplastic elastomer composition 2 is prepared.

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Abstract

The invention relates to a thermoplastic elastomer composition as well as a preparation method and application thereof. The thermoplastic elastomer composition is prepared from the following raw materials in parts by weight: 5 parts to 30 parts of a styrene block copolymer, 10 parts to 35 parts of white mineral oil, and 10 parts to 60 parts of a plasticizer, wherein the content of polystyrene in the styrene block copolymer is 15%-45%; the number average molecular weight of the styrene block copolymer is 50000 g / mol to 300000 g / mol; and the kinematic viscosity of the white mineral oil at the temperature of 40 DEG C is 5 mPa*s to 180 mPa*s. The thermoplastic elastomer composition is soft in hand feeling, dry and comfortable in surface, not easy to mildew, stain-resistant, not easy to dry and solidify, good in rebound resilience and strong in bare-handed plasticity, can be stored for a long time, can be recycled and has a wide application prospect.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a thermoplastic elastomer composition and its preparation method and application. Background technique [0002] Thermoplastic Elastomer (Thermoplastic Elastomer, TPE) is a kind of elastomer that has the elasticity of rubber at room temperature and can be plasticized and molded at high temperature. At the same time, it has the characteristics of convenient processing and wide processing methods of ordinary plastics. TPE can be produced by conventional processing methods such as injection molding, extrusion, blow molding, etc., and finished products can be prepared without vulcanization, which simplifies the processing process, reduces energy consumption, saves resources, shortens the processing cycle, improves production efficiency, and reduces costs; and the nozzle After the corners are crushed, they can be used directly for secondary use, further saving resources and reducing c...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L91/00C08L91/06C08L57/02C08K13/02C08K5/12C08K5/526C08K5/098C08K3/26C08K3/22
CPCC08L53/025C08L91/00C08L2207/04C08L2205/035C08K2003/265C08K2003/2241
Inventor 刘允德梁广洋李萍邱廷模
Owner 盛嘉伦橡塑(河源)有限公司
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