Thermoplastic resin composition

A thermoplastic resin and composition technology, applied in the field of modified thermoplastic resin composition and thermoplastic resin composition, can solve the problems of content not exceeding 30%, difficult to popularize and apply in a large range, high cost of copolymer, and improve weld line defects. , low price, safe use of materials

Active Publication Date: 2018-06-29
BENSONG ENG PLASTICS HANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The reinforcing material in the composition is only glass fiber, which is of a single type, and the content cannot exceed 30%; and the cost of the copolymer of nylon 6 and long-chain nylon is higher than that of PA6, and it is not easy to obtain
Therefore, it is difficult for this method to be applied on a large scale for the formulation of compositions that wish to reduce costs by adding a large amount of reinforcing materials

Method used

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  • Thermoplastic resin composition
  • Thermoplastic resin composition
  • Thermoplastic resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～ Embodiment 13

[0054] According to the material ratio in Table 1, the components of thermoplastic resin, weld line improving agent and other additive materials were mixed uniformly first, and then extruded and granulated by twin-screw extruder. The length-to-diameter ratio of the twin-screw extruder is 40:1, the screw speed is 280r / min, the strands are watered and pelletized. After the particles are dried (usually in a vacuum oven at 80°C for 5-8 hours), the standard specimens corresponding to the test are molded in the injection molding machine, and the performance test is carried out. The test results are shown in Table 1.

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Abstract

The invention discloses thermoplastic resin composition. The thermoplastic resin composition comprises the following raw materials: thermoplastic resin, filler, a flame retardant and a weld line improver, wherein the weld line improver is anatase type and/or rutile type titanium dioxide having purity of 96% or higher and subjected to organic and/or inorganic surface treatment. The composition in the formula is applicable to various thermoplastic substrates such as engineering plastics including polyester and polyamide, and is also particularly applicable to manufacture of plastic parts needingmulti-gate injection molding or complicate-structured plastic parts with insert, cavity and thickness changes, and weld lines on products can be obviously improved or even eliminated.

Description

technical field [0001] The invention relates to the technical field of modified thermoplastic resin compositions, in particular to a thermoplastic resin composition. Background technique [0002] In recent years, with the increase in the demand for plastic products and the improvement of their quality requirements, higher and higher requirements have been put forward for injection molding technology. However, injection molding has its own insurmountable defects, that is, when the product uses multiple gates during the injection molding process, or when the melt separates and rejoins due to inserts, cavities, and wall thickness changes, it will inevitably form Weld marks, especially when plastic products are injection-molded with light-colored materials modified by adding additives such as fillers and flame retardants, are more obvious. The existence of weld lines directly affects the visual aesthetics of plastic parts, especially appearance parts. Especially in the electron...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K3/22C08K5/134C08K5/526C08K5/103C08K7/14C08K3/34C08K3/30
CPCC08K3/22C08K3/34C08K3/346C08K5/103C08K5/1345C08K5/526C08K7/14C08K2003/2224C08K2003/2241C08K2003/3036C08L77/02C08L2201/02C08L67/02C08L25/06C08K13/04C08K3/2279C08K3/30
Inventor 傅李丹丁广军卜扬帆陈勇伟张光辉周永松
Owner BENSONG ENG PLASTICS HANGZHOU
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