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Formula, preparation method and production equipment of high-tensile PBT (Polybutylene Terephthalate) material

A production equipment and high-tensile technology, applied in the field of PBT materials, can solve the problems of weak tensile properties, small application range, and insufficient tensile properties of PBT materials, so as to improve mechanical properties, improve physical and chemical properties, improve hardness and durability. abrasive effect

Inactive Publication Date: 2021-10-15
JIANGSU SONGSHANG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Tensile resistance refers to the need to embed one end of the PBT material sheet into the pull-out fixture when assembling the PBT material, and then pull out the insert through a tensile tester. The force measured at this time is the tensile force. The tensile force reflects the structural strength of the PBT material sheet. The greater the tensile force, the better the properties of the PBT material. After testing, the existing ordinary PBT materials do not mention the relevant test of the pulling force in the tensile effect. The tensile performance of PBT material is weak. In some specific use occasions, such as terminal insulation base and automotive parts, the service life is short and there are certain defects. In view of this, we will study and improve the existing problems. , to provide a formula, preparation method and production equipment of a high-tensile PBT material to solve the current problems of insufficient tensile strength and small application range, aiming to solve problems and improve practical value through this technology Purpose

Method used

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  • Formula, preparation method and production equipment of high-tensile PBT (Polybutylene Terephthalate) material
  • Formula, preparation method and production equipment of high-tensile PBT (Polybutylene Terephthalate) material
  • Formula, preparation method and production equipment of high-tensile PBT (Polybutylene Terephthalate) material

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Embodiment 1

[0033] combine Figure 1-5 As shown, the formula and preparation method of a high-tensile PBT material provided by the present invention comprise the following steps: S1: using 1.4-butanediol and terephthalic acid dicarboxylate to carry out transesterification reaction to generate terephthalic acid dibutyl ester, and remove methanol, and then carry out polycondensation reaction to produce PBT resin raw material;

[0034] S2: The following mass fractions of raw reaction materials are used: 45-50 parts of PBT resin raw materials, 0.3-0.7 parts of acrylic polymer chain extender ADR, 0.3-0.8 parts of coupling agent and 0.02-0.04 parts of antioxidant Inject into the production equipment of PBT material, preheat the temperature to 230-240°C and keep stirring, the coupling agent is aminopropyltriethoxysilane KH-550, methacryloxy and titanate coupling agent One or more combinations in 101, the antioxidant is a compound of hindered phenolic antioxidant 1010 and phosphite antioxidant 6...

Embodiment 2

[0045] The difference with Example 1 is that, S1: Use 1.4-butanediol and terephthalic acid dicarboxylate to carry out transesterification reaction to generate dibutyl terephthalate, and remove methanol, and then carry out polycondensation reaction to produce PBT resin raw material;

[0046] S2: The following mass fractions of raw reaction materials are used: 45-50 parts of PBT resin raw materials, 0.7-0.9 parts of acrylic polymer chain extender ADR, 0.8-1.0 parts of coupling agent and 0.02-0.04 parts of antioxidant Inject into the production equipment of PBT material, preheat and control the temperature to 230-240°C and keep stirring. The coupling agent is aminopropyltriethoxysilane KH-550, methacryloxy and titanate coupling agent One or more combinations in the joint agent 101, the antioxidant is a compound of hindered phenolic antioxidant 1010 and phosphite antioxidant 626 mixed according to the mass component 2:1.2;

[0047] S3: The pressurization interface of the device i...

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Abstract

The invention discloses a formula, a preparation method and production equipment of a high-tensile-strength PBT (Polybutylene Terephthalate) material. The preparation method comprises the following steps of: S1, carrying out ester exchange reaction on 1,4-butanediol and terephthalic acid diformate to generate dibutyl terephthalate, removing methanol, and carrying out condensation polymerization to produce a PBT resin raw material; and S2, putting 45-50 parts by mass of the PBT resin raw material, 0.3-0.7 parts by mass of an acrylic polymer type chain extender ADR, 0.3-0.8 parts by mass of a coupling agent and 0.02-0.04 parts by mass of an antioxidant into production equipment of the PBT material, preheating, controlling the temperature to 230-240 DEG C, and continuously stirring. According to the invention, carbon fibers are added into the PBT material for treatment, and the PBT material and the carbon fibers are mixed and kneaded by using the coupling agent, so that the wettability of the short carbon fibers in the PBT resin is improved, the compatibility of the short carbon fibers and the PBT resin is increased, and therefore, the mechanical properties of the composite material are improved, the composite material has the advantages of high temperature resistance, high tensile strength, high bending strength, high tensile strength and the like, and the physicochemical property of the PBT material is improved.

Description

technical field [0001] The invention relates to the technical field of PBT materials, in particular to a formula, a preparation method and production equipment of a high tensile PBT material. Background technique [0002] Polybutylene terephthalate (PBT) is a colorless and transparent thermoplastic resin, which is widely used because of its low price and easy processing. Wollastonite is a triclinic crystal system, thin plate-shaped crystals with low oil absorption, low electrical conductivity, and good insulation. It is mainly used as a reinforcing filler for polymer-based composite materials. Polybutylene terephthalate (PBT) has excellent fluidity, chemical resistance and heat resistance. Carbon fiber has the characteristics of high temperature resistance, high strength, high modulus, corrosion resistance and fatigue resistance. It is a kind of Lightweight and high-strength new fiber materials are mainly used to prepare advanced composite materials, and are widely used in ...

Claims

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Application Information

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IPC IPC(8): C08J7/046C08J5/04C08L67/02C08K7/06C08K5/544C08K5/10B29B7/16B29B7/82B29B7/84B29B7/86
CPCC08J7/046C08J7/0427C08J5/042B29B7/16B29B7/86B29B7/826B29B7/845C08J2367/02C08K7/06C08K5/544C08K5/10
Inventor 孙桂松陶文庆
Owner JIANGSU SONGSHANG TECH CO LTD
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